NOISSUE - RabbitMQ build and deployment (#1570)

* Initial commit of adding rabbitmq broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit of adding rabbitmq broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit for tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Bump up tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add more tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add go routines Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit of adding rabbitmq broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit of adding rabbitmq broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit for tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Bump up tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add more tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add go routines Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix with wait groups Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * unsubscribe to stop delivering messages Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove exclusivity Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Implement cancel mechanisms Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Queuename as parameter Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Queuename as parameter Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove broker type Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Configure broker with makefile Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Check if we have changed MESSAGE_BROKER_FILE~ Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Set nats automatically Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Catching null and invalid broker type Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove unused fmt Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Nats Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * unexport constants Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change routingkey Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove wait groups Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * protecting map Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add publisher to pubsub Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change proto library Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix typos Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Reduce pubsub tests based on implementation Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove channel cancel Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Export constant Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Embedding publisher into pubsub Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Naming publisher Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Update rabbitmq subscriber interface Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * using publisher composition Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change contenttype Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * rename topic for publish and subscribe Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change errors to lower case Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change errors to lower case Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * export errors Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * queue per subscription Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * queue per subscription Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Merge branch 'master' into RabbitMQ-deployment Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * rename nats to broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change routing method Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Direct method with one exchange to many queues, one consumer per queue Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1263 - Move repeating errors to the separate package (#1540) * MF-1263 - Mv duplicated errors to pkg/errors Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Revert test build flags Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix merge Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix comment Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Fix auth members list response (#1555) * NOISSUE - Fix auth members list response Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Move group type next to page details Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Rm membersRes Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix typo Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1261 - Use StatusUnauthorized for authn and StatusForbidden for authz (#1538) * MF-1261 - Use StatusUnauthorized for authn and StatusForbidden for authz Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * ErrExternalKey typo Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Rename ErrUnauthorizedAcces -> ErrAuthentication Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix bootstrap error Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix status code in openapi Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix test description Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix test description Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix test description Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Add errors cases Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix status codes Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Add gRPC stutus code Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix tests description Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix openapi and encodeError Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix grpc message Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix test descriptions Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Revert sdk error Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix typo Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1059 - Add TLS support for email (#1560) * Use gomail package for sending emails Signed-off-by: Ivan Milosevic <iva@blokovi.com> * remove print err Signed-off-by: Ivan Milosevic <iva@blokovi.com> * Add vendor Signed-off-by: Ivan Milosevic <iva@blokovi.com> * Rename email structure remove logger Signed-off-by: Ivan Milosevic <iva@blokovi.com> * typo in var name Signed-off-by: Ivan Milosevic <iva@blokovi.com> * rename var Signed-off-by: Ivan Milosevic <iva@blokovi.com> * remove MF_EMAIL_SECRET Signed-off-by: Ivan Milosevic <iva@blokovi.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Refactor MQTT subscriber (#1561) * correct suscriber interface validator + refactore token error handling Signed-off-by: tzzed <zerouali.t@gmail.com> * apply review suggestion Signed-off-by: tzzed <zerouali.t@gmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1257 - Access messages from readers endpoint with user access token (#1470) * remove owner id Signed-off-by: Mirko Teodorovic <mirko.teodorovic@gmail.com> * add user auth for db reader Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * add user auth for db reader Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * enable mongodb reader for user token reading Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * use uuid check for auth switch between thing key and user tok Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * enable user token reading Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * revert to correct version Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fix endpoint test, add additional tests Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * remove logs,dead code Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fix logging messages Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * remove auth interface, add authorization header type Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * update api doc Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * remove unused package Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * some refactor of cases for authorization switch Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * correct description in openapi Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fix endpoint test to match auth service change Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * some rename Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * initialize auth url Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * add env variables for auth service Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fix spelling Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * Things prefix and no prefix for Thing authorization, Bearer for user Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * update readme file Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fix default things grpc port Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * enable user reading for timescaledb Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * remove not used error Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * improve errors Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * refactor authorize Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * add chanID check Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * inline some error checking Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fixing errors Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fixing errors Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * improve test case description Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * remove test code Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * dont inline Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * refactor a bit encodeError Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * remove unused error Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * remove unused error Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * fix things auth grpc url Signed-off-by: mteodor <mirko.teodorovic@gmail.com> * rename variables for header prefix Signed-off-by: mteodor <mirko.teodorovic@gmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit of adding rabbitmq broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit of adding rabbitmq broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit for tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Bump up tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add more tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add go routines Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit of adding rabbitmq broker Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Initial commit for tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Bump up tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add more tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add go routines Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix with wait groups Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * unsubscribe to stop delivering messages Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove exclusivity Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1551 - Fix Cobra usage commands and clean unnecessary struct types (#1558) * MF-1551 - Fix Cobra usage commands and clean unnecessary struct types Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Use linux syntax for cmd usage description Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix typo Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix cmd.Use Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Separate Keto hosts for read and write (#1563) * Separate keto hosts for read and write Signed-off-by: Ivan Milosevic <iva@blokovi.com> * update readme with new envars Signed-off-by: Ivan Milosevic <iva@blokovi.com> * rename read connection name Signed-off-by: Ivan Milosevic <iva@blokovi.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Co-authored-by: Drasko DRASKOVIC <drasko.draskovic@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Update dependencies (#1564) Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1240 - Return to service transport layer only service errors (#1559) * MF-1240 - Return to service transport layer only service errors Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Remove unecessary errors Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Rm duplicated errors and fix transport Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Revert http endpoint_test Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix conflict Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Implement cancel mechanisms Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Queuename as parameter Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Queuename as parameter Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1469 - Indicate proper authentication scheme in Authorization header (#1523) * MF-1469 - Indicate proper authentication scheme in Authorization header Signed-off-by: Stefan Kovacevic <jen2tri@gmail.com> * Fixing the remarks on the last push Signed-off-by: Stefan Kovacevic <jen2tri@gmail.com> * Remove Bearer prefix in all services and fix tests Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix remarks Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Co-authored-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Add nats wrapper for COAP (#1569) * Add nats wrapper for COAP Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Pass pubsub as argument Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Defer close connection Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Defer close connection Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Rename endpoint to topic Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1348 - Add transport errors logging (#1544) * MF-1348 - Add go-kit transport level logging Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix reviews Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix reviews Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix merge Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix remark Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix go test flags Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Use httputil errors in things and http service Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix SDK tests Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Use httputil errors in certs and provision service Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Use httputil errors in consumers service Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * General renaming and add ErrMissingToken Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Rename httputil -> apiutil and use errors in users servive Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Use apiutil errors in auth, bootstrap, readers, things and twins Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Replace errors.Contain by comparison Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix remarks Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Simplify validateID Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Simplify validateID Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Simplify and rename ExtractAuthToken -> ExtractBearerToken Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix readers Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix auth key test and remarks Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Improve comment Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Simplify validateUUID check Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix typo Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1567 - Use Bearer, Thing or Basic scheme in Authorization header (#1568) Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1565 - Document Bearer, Thing and Basic Authorization header (#1566) * MF-1565 - Document Bearer Authorization header Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix auth, bootstrap, http and readers openapi Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix openapi Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Add enc key for bootstrap Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix typo Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Use global security Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix bearer formats Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Polish descriptions Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Fix boostrap and typo Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Co-authored-by: Drasko DRASKOVIC <drasko.draskovic@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1575 Add 'Name' field to ListMembers response in things svc (#1576) Signed-off-by: Ivan Balboteo <ivan@submer.com> Co-authored-by: Ivan Balboteo <ivan@submer.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1580 - Influxdb Writer changes format of update-time to string (#1581) * - MF-1580 - Modified consumers/writers/influxdb/fields.go - influxdb-writer used to update data type of update-time to string - Commented line 12 of consumers/writers/influxdb/fields.go to resolve uneccessary data type conversion issue Signed-off-by: Hasan Tariq <hasantariqashraf@gmail.com> * - MF-1580 - Removed strconv package from consumers/writers/influxdb/fields.go since it is no longer needed - Removed line 12 from consumers/writers/influxdb/fields.go - Replaced retrun value of updateTime with msg.UpdateTime (line 16 in fields.go) Signed-off-by: Hasan Tariq <hasantariqashraf@gmail.com> * Fix InflxuDB readers Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> Co-authored-by: Hasan Tariq <hasant@plcgroup.com> Co-authored-by: dusanb94 <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Unify MF_INFLUX_READER_DB_HOST and MF_INFLUX_WRITER_DB_HOST envars (#1585) Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Fix CoAP adapter (#1572) * Revert "NOISSUE - Add nats wrapper for COAP (#1569)" This reverts commit cc5d5195ab. Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Fix CoAP adapter Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Update CoAP observation cancel Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Fix observe Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Fix GET handling Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Revert authorization Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Use constants instead of magic numbers Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Remove an empty line Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Extract special observe value to constant Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1582 - Fix lora-adapter MQTT client (#1583) * MF-1582 - Fix lora-adapter MQTT clien Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Add timeout config to the mqtt subscriber Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Rm comment Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> * Add sub timeout Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Update changelog and readme for release 0.13.0 (#1592) * Update release example Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Update changelog and examples for 0.13.0 release Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Update VerneMQ release (#1593) Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Update changelog for release 0.13.0 (#1595) Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * unexport constants Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change routingkey Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove wait groups Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * protecting map Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add publisher to pubsub Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change proto library Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix typos Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Reduce pubsub tests based on implementation Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Remove channel cancel Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Export constant Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Move invariant statements out of loop for cassandra-writer (#1596) Signed-off-by: fuzhy <fuzhy1997@outlook.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Embedding publisher into pubsub Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Naming publisher Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Fix Nginx entrypoint script (#1597) * Fix Nginx entrypoint script Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Update dependencies Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Fix NginX entrypoint Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Revert Makefile changes Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1525 - Add graceful stop for HTTP and GRPC servers (#1548) * Add : errgroup to cmd/auth Signed-off-by: Arvindh <arvindh91@gmail.com> * Add : Handle graceful stop for auth service Remove : errgroups from auth service Signed-off-by: Arvindh <arvindh91@gmail.com> * Add : Wait till server shutdown Signed-off-by: Arvindh <arvindh91@gmail.com> * Change : instead of waitgroup changed to errgroups Signed-off-by: Arvindh <arvindh91@gmail.com> * change : KillSignalHandler return type to error Signed-off-by: Arvindh <arvindh91@gmail.com> * Empty Commit Signed-off-by: Arvindh <arvindh91@gmail.com> * Add : Context to http server shutdown Rename : varaible from proto to protocol Signed-off-by: Arvindh <arvindh91@gmail.com> * change : to default log level Signed-off-by: Arvindh <arvindh91@gmail.com> * Add : Sign-off Signed-off-by: Arvindh <arvindh91@gmail.com> * Add: graceful stop of http and grpc server Signed-off-by: Arvindh <arvindh91@gmail.com> * Fix: typos and caps Signed-off-by: Arvindh <arvindh91@gmail.com> * Add: Signed-off Signed-off-by: Arvindh <arvindh91@gmail.com> * Rename: Func KillSignalHandler to SignalHandler Add: SIGABRT Signed-off-by: Arvindh <arvindh91@gmail.com> * Fix: auth service Signed-off-by: Arvindh <arvindh91@gmail.com> * Add: timeout for grpc gracefulstop Fix: typos Signed-off-by: Arvindh <arvindh91@gmail.com> * Add: .vscode folder to git ignore Signed-off-by: Arvindh <arvindh91@gmail.com> * change: variable name to stopWaitTime Signed-off-by: Arvindh <arvindh91@gmail.com> * remove: .vscode folder Signed-off-by: Arvindh <arvindh91@gmail.com> * remove: .vscode from .gitignore Signed-off-by: Arvindh <arvindh91@gmail.com> * Add : logger to handlers Signed-off-by: Arvindh <arvindh91@gmail.com> * Add : New line at end of .gitignore file Signed-off-by: Arvindh <arvindh91@gmail.com> * Fix : variable naming Add : graceful stop for timescale Signed-off-by: Arvindh <arvindh91@gmail.com> * Remove : unsued NATS library from import Signed-off-by: Arvindh <arvindh91@gmail.com> * Move: "https" and "https" to moved to const var Signed-off-by: Arvindh <arvindh91@gmail.com> * Move: "http" and "https" to moved to const var Signed-off-by: Arvindh <arvindh91@gmail.com> * update: branch with master Signed-off-by: Arvindh <arvindh91@gmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Co-authored-by: Drasko DRASKOVIC <drasko.draskovic@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF-1588 - Update Subscriber interface (#1598) * Initial commit Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Update subscriber interface Signed-off-by: dusanb94 <dusan.borovcanin@mainflux.com> * Add tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * check subscription map Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Check topic id after topic Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * reword description Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Setup empty queue Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change mqtt implementation Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Switch statements Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Simplify Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change mqtt subscriber Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Protect subscription map Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix subscription Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Set client id Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Format Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change delete method Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Update rabbitmq subscriber interface Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * using publisher composition Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change contenttype Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * rename topic for publish and subscribe Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change errors to lower case Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change errors to lower case Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * export errors Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * MF - 1590 - Fix fetching list of users with a zero limit (#1594) * Add max and min limit size Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Format Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Format Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * NOISSUE - Retrieve client key on cert issuing (#1607) Signed-off-by: Manuel Imperiale <manuel.imperiale@gmail.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * fix bug (#1604) Signed-off-by: zhangchuanfeng <654300242@qq.com> Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * queue per subscription Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * queue per subscription Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change routing method Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Direct method with one exchange to many queues, one consumer per queue Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * ♻️ Not casting data Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * ✏️ Fix typo Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * ♻️ remove passed queue name Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * 🔥 removing echange kind Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Combine tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Refactor unsubscribe method Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix merge conflict Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * ✅ sub and unsub to dummy topic Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * generate client id from topic and ID Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Rename topicID to clientID Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * update tests Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * merge changes Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * ♻️ rename constant and variable declaration Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * rename to brokers Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * ♻️ Rename brokers Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change mqtt implementation Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Rename broker to brokers Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * include nats port Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * move to build tags Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * move to build tags Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * add nats build tag to test Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * \n at the end of file Signed-off-by: GitHub <noreply@github.com> * Add init function Signed-off-by: GitHub <noreply@github.com> * Add init function Signed-off-by: GitHub <noreply@github.com> * broker url automatically Signed-off-by: GitHub <noreply@github.com> * make nats as the default broker Signed-off-by: GitHub <noreply@github.com> * Updated publisher and subscriber interface Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Add error to close Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Change image version and let user define URI Signed-off-by: GitHub <noreply@github.com> * make broker url configurable Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * add compile check Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * rabbitmq check Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * default broker to nats Signed-off-by: GitHub <noreply@github.com> * change broker url in docker compose Signed-off-by: GitHub <noreply@github.com> * Fix ci Signed-off-by: GitHub <noreply@github.com> * fix makefile Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix env var and ci Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix ci Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> * Fix consts Signed-off-by: 0x6f736f646f <blackd0t@protonmail.com> Co-authored-by: Dušan Borovčanin <dusan.borovcanin@mainflux.com> Co-authored-by: Manuel Imperiale <manuel.Imperiale@gmail.com> Co-authored-by: Ivan Milošević <iva@blokovi.com> Co-authored-by: __touk__ <zerouali.t@gmail.com> Co-authored-by: Mirko Teodorovic <mirko.teodorovic@gmail.com> Co-authored-by: Drasko DRASKOVIC <drasko.draskovic@gmail.com> Co-authored-by: stefankovacevic123 <jen2tri@gmail.com> Co-authored-by: ibalboteo <ivanbalboteo@gmail.com> Co-authored-by: Ivan Balboteo <ivan@submer.com> Co-authored-by: Hasan98-git <67228396+Hasan98-git@users.noreply.github.com> Co-authored-by: Hasan Tariq <hasant@plcgroup.com> Co-authored-by: fuzhy <fuzhy1997@outlook.com> Co-authored-by: Arvindh <30824765+arvindh123@users.noreply.github.com> Co-authored-by: 张传峰 <59160162+zhang-chuanfeng@users.noreply.github.com>
2026-06-23 06:40:19 +00:00 · 2022-06-21 18:40:20 +03:00
parent 9a87e5cd1f
commit 5c495238a6
63 changed files with 630 additions and 531 deletions
@@ -14,9 +14,15 @@ VERSION ?= $(shell git describe --abbrev=0 --tags)
 COMMIT ?= $(shell git rev-parse HEAD)
 TIME ?= $(shell date +%F_%T)

+ifneq ($(MF_BROKER_TYPE),)
+    MF_BROKER_TYPE := $(MF_BROKER_TYPE)
+else
+    MF_BROKER_TYPE=nats
+endif
+
 define compile_service
 	CGO_ENABLED=$(CGO_ENABLED) GOOS=$(GOOS) GOARCH=$(GOARCH) GOARM=$(GOARM) \
-	go build -mod=vendor -ldflags "-s -w \
+	go build -mod=vendor -tags $(MF_BROKER_TYPE) -ldflags "-s -w \
 	-X 'github.com/mainflux/mainflux.BuildTime=$(TIME)' \
 	-X 'github.com/mainflux/mainflux.Version=$(VERSION)' \
 	-X 'github.com/mainflux/mainflux.Commit=$(COMMIT)'" \
@@ -111,4 +117,13 @@ rundev:
 	cd scripts && ./run.sh

 run:
+ifeq ("$(MF_BROKER_TYPE)", "rabbitmq")
+	sed -i "s,file: brokers/.*.yml,file: brokers/rabbitmq.yml," docker/docker-compose.yml
+	sed -i "s,MF_BROKER_URL: .*,MF_BROKER_URL: $$\{MF_RABBITMQ_URL\}," docker/docker-compose.yml
+else ifeq ("$(MF_BROKER_TYPE)", "nats")
+	sed -i "s,file: brokers/.*.yml,file: brokers/nats.yml," docker/docker-compose.yml
+	sed -i "s,MF_BROKER_URL: .*,MF_BROKER_URL: $$\{MF_NATS_URL\}," docker/docker-compose.yml
+else
+	echo "Invalid broker type"; exit 1
+endif
 	docker-compose -f docker/docker-compose.yml up
@@ -7,7 +7,7 @@ info:
  version: '1.0.0'
  description: |
    MQTT adapter provides an MQTT API for sending messages through the platform. MQTT adapter uses [mProxy](https://github.com/mainflux/mproxy) for proxying traffic between client and MQTT broker.
-    Additionally, the MQTT adapter and the NATS message broker are replicating the traffic between brokers.
+    Additionally, the MQTT adapter and the message broker are replicating the traffic between brokers.

 defaultContentType: application/json

@@ -21,7 +21,7 @@ import (
 	"github.com/mainflux/mainflux/consumers/writers/cassandra"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
 	"golang.org/x/sync/errgroup"
 )
@@ -31,7 +31,7 @@ const (
 	sep          = ","
 	stopWaitTime = 5 * time.Second

-	defNatsURL    = "nats://localhost:4222"
+	defBrokerURL  = "nats://localhost:4222"
 	defLogLevel   = "error"
 	defPort       = "8180"
 	defCluster    = "127.0.0.1"
@@ -41,7 +41,7 @@ const (
 	defDBPort     = "9042"
 	defConfigPath = "/config.toml"

-	envNatsURL    = "MF_NATS_URL"
+	envBrokerURL  = "MF_BROKER_URL"
 	envLogLevel   = "MF_CASSANDRA_WRITER_LOG_LEVEL"
 	envPort       = "MF_CASSANDRA_WRITER_PORT"
 	envCluster    = "MF_CASSANDRA_WRITER_DB_CLUSTER"
@@ -53,7 +53,7 @@ const (
 )

 type config struct {
-	natsURL    string
+	brokerURL  string
 	logLevel   string
 	port       string
 	configPath string
@@ -70,9 +70,9 @@ func main() {
 		log.Fatalf(err.Error())
 	}

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -116,7 +116,7 @@ func loadConfig() config {
 	}

 	return config{
-		natsURL:    mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:  mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:   mainflux.Env(envLogLevel, defLogLevel),
 		port:       mainflux.Env(envPort, defPort),
 		configPath: mainflux.Env(envConfigPath, defConfigPath),
@@ -19,8 +19,8 @@ import (
 	"github.com/mainflux/mainflux/coap"
 	"github.com/mainflux/mainflux/coap/api"
 	logger "github.com/mainflux/mainflux/logger"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
 	"github.com/mainflux/mainflux/pkg/errors"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	thingsapi "github.com/mainflux/mainflux/things/api/auth/grpc"
 	opentracing "github.com/opentracing/opentracing-go"
 	gocoap "github.com/plgd-dev/go-coap/v2"
@@ -35,7 +35,7 @@ const (
 	stopWaitTime = 5 * time.Second

 	defPort              = "5683"
-	defNatsURL           = "nats://localhost:4222"
+	defBrokerURL         = "nats://localhost:4222"
 	defLogLevel          = "error"
 	defClientTLS         = "false"
 	defCACerts           = ""
@@ -44,7 +44,7 @@ const (
 	defThingsAuthTimeout = "1s"

 	envPort              = "MF_COAP_ADAPTER_PORT"
-	envNatsURL           = "MF_NATS_URL"
+	envBrokerURL         = "MF_BROKER_URL"
 	envLogLevel          = "MF_COAP_ADAPTER_LOG_LEVEL"
 	envClientTLS         = "MF_COAP_ADAPTER_CLIENT_TLS"
 	envCACerts           = "MF_COAP_ADAPTER_CA_CERTS"
@@ -55,7 +55,7 @@ const (

 type config struct {
 	port              string
-	natsURL           string
+	brokerURL         string
 	logLevel          string
 	clientTLS         bool
 	caCerts           string
@@ -82,9 +82,9 @@ func main() {

 	tc := thingsapi.NewClient(conn, thingsTracer, cfg.thingsAuthTimeout)

-	nps, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	nps, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer nps.Close()
@@ -142,7 +142,7 @@ func loadConfig() config {
 	}

 	return config{
-		natsURL:           mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:         mainflux.Env(envBrokerURL, defBrokerURL),
 		port:              mainflux.Env(envPort, defPort),
 		logLevel:          mainflux.Env(envLogLevel, defLogLevel),
 		clientTLS:         tls,
@@ -22,7 +22,7 @@ import (
 	"github.com/mainflux/mainflux/http/api"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	thingsapi "github.com/mainflux/mainflux/things/api/auth/grpc"
 	"github.com/opentracing/opentracing-go"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
@@ -38,7 +38,7 @@ const (
 	defClientTLS         = "false"
 	defCACerts           = ""
 	defPort              = "8180"
-	defNatsURL           = "nats://localhost:4222"
+	defBrokerURL         = "nats://localhost:4222"
 	defJaegerURL         = ""
 	defThingsAuthURL     = "localhost:8183"
 	defThingsAuthTimeout = "1s"
@@ -47,14 +47,14 @@ const (
 	envClientTLS         = "MF_HTTP_ADAPTER_CLIENT_TLS"
 	envCACerts           = "MF_HTTP_ADAPTER_CA_CERTS"
 	envPort              = "MF_HTTP_ADAPTER_PORT"
-	envNatsURL           = "MF_NATS_URL"
+	envBrokerURL         = "MF_BROKER_URL"
 	envJaegerURL         = "MF_JAEGER_URL"
 	envThingsAuthURL     = "MF_THINGS_AUTH_GRPC_URL"
 	envThingsAuthTimeout = "MF_THINGS_AUTH_GRPC_TIMEOUT"
 )

 type config struct {
-	natsURL           string
+	brokerURL         string
 	logLevel          string
 	port              string
 	clientTLS         bool
@@ -83,9 +83,9 @@ func main() {
 	thingsTracer, thingsCloser := initJaeger("things", cfg.jaegerURL, logger)
 	defer thingsCloser.Close()

-	pub, err := nats.NewPublisher(cfg.natsURL)
+	pub, err := brokers.NewPublisher(cfg.brokerURL)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pub.Close()
@@ -139,7 +139,7 @@ func loadConfig() config {
 	}

 	return config{
-		natsURL:           mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:         mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:          mainflux.Env(envLogLevel, defLogLevel),
 		port:              mainflux.Env(envPort, defPort),
 		clientTLS:         tls,
@@ -19,7 +19,7 @@ import (
 	"github.com/mainflux/mainflux/consumers/writers/influxdb"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
 	"golang.org/x/sync/errgroup"
 )
@@ -28,7 +28,7 @@ const (
 	svcName      = "influxdb-writer"
 	stopWaitTime = 5 * time.Second

-	defNatsURL    = "nats://localhost:4222"
+	defBrokerURL  = "nats://localhost:4222"
 	defLogLevel   = "error"
 	defPort       = "8180"
 	defDB         = "mainflux"
@@ -38,7 +38,7 @@ const (
 	defDBPass     = "mainflux"
 	defConfigPath = "/config.toml"

-	envNatsURL    = "MF_NATS_URL"
+	envBrokerURL  = "MF_BROKER_URL"
 	envLogLevel   = "MF_INFLUX_WRITER_LOG_LEVEL"
 	envPort       = "MF_INFLUX_WRITER_PORT"
 	envDB         = "MF_INFLUXDB_DB"
@@ -50,7 +50,7 @@ const (
 )

 type config struct {
-	natsURL    string
+	brokerURL  string
 	logLevel   string
 	port       string
 	dbName     string
@@ -71,9 +71,9 @@ func main() {
 		log.Fatalf(err.Error())
 	}

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -115,7 +115,7 @@ func main() {

 func loadConfigs() (config, influxdata.HTTPConfig) {
 	cfg := config{
-		natsURL:    mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:  mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:   mainflux.Env(envLogLevel, defLogLevel),
 		port:       mainflux.Env(envPort, defPort),
 		dbName:     mainflux.Env(envDB, defDB),
@@ -20,7 +20,7 @@ import (
 	"github.com/mainflux/mainflux/lora/api"
 	"github.com/mainflux/mainflux/lora/mqtt"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	"golang.org/x/sync/errgroup"

 	kitprometheus "github.com/go-kit/kit/metrics/prometheus"
@@ -34,11 +34,11 @@ const (
 	defLogLevel       = "error"
 	defHTTPPort       = "8180"
 	defLoraMsgURL     = "tcp://localhost:1883"
+	defBrokerURL      = "nats://localhost:4222"
 	defLoraMsgTopic   = "application/+/device/+/event/up"
 	defLoraMsgUser    = ""
 	defLoraMsgPass    = ""
 	defLoraMsgTimeout = "30s"
-	defNatsURL        = "nats://localhost:4222"
 	defESURL          = "localhost:6379"
 	defESPass         = ""
 	defESDB           = "0"
@@ -49,11 +49,11 @@ const (

 	envHTTPPort       = "MF_LORA_ADAPTER_HTTP_PORT"
 	envLoraMsgURL     = "MF_LORA_ADAPTER_MESSAGES_URL"
+	envBrokerURL      = "MF_BROKER_URL"
 	envLoraMsgTopic   = "MF_LORA_ADAPTER_MESSAGES_TOPIC"
 	envLoraMsgUser    = "MF_LORA_ADAPTER_MESSAGES_USER"
 	envLoraMsgPass    = "MF_LORA_ADAPTER_MESSAGES_PASS"
 	envLoraMsgTimeout = "MF_LORA_ADAPTER_MESSAGES_TIMEOUT"
-	envNatsURL        = "MF_NATS_URL"
 	envLogLevel       = "MF_LORA_ADAPTER_LOG_LEVEL"
 	envESURL          = "MF_THINGS_ES_URL"
 	envESPass         = "MF_THINGS_ES_PASS"
@@ -71,11 +71,11 @@ const (
 type config struct {
 	httpPort       string
 	loraMsgURL     string
+	brokerURL      string
 	loraMsgUser    string
 	loraMsgPass    string
 	loraMsgTopic   string
 	loraMsgTimeout time.Duration
-	natsURL        string
 	logLevel       string
 	esURL          string
 	esPass         string
@@ -102,9 +102,9 @@ func main() {
 	esConn := connectToRedis(cfg.esURL, cfg.esPass, cfg.esDB, logger)
 	defer esConn.Close()

-	pub, err := nats.NewPublisher(cfg.natsURL)
+	pub, err := brokers.NewPublisher(cfg.brokerURL)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pub.Close()
@@ -163,11 +163,11 @@ func loadConfig() config {
 	return config{
 		httpPort:       mainflux.Env(envHTTPPort, defHTTPPort),
 		loraMsgURL:     mainflux.Env(envLoraMsgURL, defLoraMsgURL),
+		brokerURL:      mainflux.Env(envBrokerURL, defBrokerURL),
 		loraMsgTopic:   mainflux.Env(envLoraMsgTopic, defLoraMsgTopic),
 		loraMsgUser:    mainflux.Env(envLoraMsgUser, defLoraMsgUser),
 		loraMsgPass:    mainflux.Env(envLoraMsgPass, defLoraMsgPass),
 		loraMsgTimeout: mqttTimeout,
-		natsURL:        mainflux.Env(envNatsURL, defNatsURL),
 		logLevel:       mainflux.Env(envLogLevel, defLogLevel),
 		esURL:          mainflux.Env(envESURL, defESURL),
 		esPass:         mainflux.Env(envESPass, defESPass),
@@ -18,7 +18,7 @@ import (
 	"github.com/mainflux/mainflux/consumers/writers/mongodb"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
@@ -30,14 +30,14 @@ const (
 	stopWaitTime = 5 * time.Second

 	defLogLevel   = "error"
-	defNatsURL    = "nats://localhost:4222"
+	defBrokerURL  = "nats://localhost:4222"
 	defPort       = "8180"
 	defDB         = "mainflux"
 	defDBHost     = "localhost"
 	defDBPort     = "27017"
 	defConfigPath = "/config.toml"

-	envNatsURL    = "MF_NATS_URL"
+	envBrokerURL  = "MF_BROKER_URL"
 	envLogLevel   = "MF_MONGO_WRITER_LOG_LEVEL"
 	envPort       = "MF_MONGO_WRITER_PORT"
 	envDB         = "MF_MONGO_WRITER_DB"
@@ -47,7 +47,7 @@ const (
 )

 type config struct {
-	natsURL    string
+	brokerURL  string
 	logLevel   string
 	port       string
 	dbName     string
@@ -66,9 +66,9 @@ func main() {
 		log.Fatal(err)
 	}

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -112,7 +112,7 @@ func main() {

 func loadConfigs() config {
 	return config{
-		natsURL:    mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:  mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:   mainflux.Env(envLogLevel, defLogLevel),
 		port:       mainflux.Env(envPort, defPort),
 		dbName:     mainflux.Env(envDB, defDB),
@@ -20,8 +20,8 @@ import (
 	"github.com/mainflux/mainflux/pkg/auth"
 	"github.com/mainflux/mainflux/pkg/errors"
 	"github.com/mainflux/mainflux/pkg/messaging"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	mqttpub "github.com/mainflux/mainflux/pkg/messaging/mqtt"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
 	thingsapi "github.com/mainflux/mainflux/things/api/auth/grpc"
 	mp "github.com/mainflux/mproxy/pkg/mqtt"
 	"github.com/mainflux/mproxy/pkg/session"
@@ -35,62 +35,54 @@ import (

 const (
 	svcName = "mqtt"
-	// Logging
-	defLogLevel = "error"
-	envLogLevel = "MF_MQTT_ADAPTER_LOG_LEVEL"
-	// MQTT
+
+	defLogLevel              = "error"
 	defMQTTPort              = "1883"
 	defMQTTTargetHost        = "0.0.0.0"
 	defMQTTTargetPort        = "1883"
 	defMQTTForwarderTimeout  = "30s" // 30 seconds
 	defMQTTTargetHealthCheck = ""
+	defHTTPPort              = "8080"
+	defHTTPTargetHost        = "localhost"
+	defHTTPTargetPort        = "8080"
+	defHTTPTargetPath        = "/mqtt"
+	defThingsAuthURL         = "localhost:8183"
+	defThingsAuthTimeout     = "1s"
+	defBrokerURL             = "nats://localhost:4222"
+	defJaegerURL             = ""
+	defClientTLS             = "false"
+	defCACerts               = ""
+	defInstance              = ""
+	defESURL                 = "localhost:6379"
+	defESPass                = ""
+	defESDB                  = "0"
+	defAuthcacheURL          = "localhost:6379"
+	defAuthCachePass         = ""
+	defAuthCacheDB           = "0"
+
+	envLogLevel              = "MF_MQTT_ADAPTER_LOG_LEVEL"
 	envMQTTPort              = "MF_MQTT_ADAPTER_MQTT_PORT"
 	envMQTTTargetHost        = "MF_MQTT_ADAPTER_MQTT_TARGET_HOST"
 	envMQTTTargetPort        = "MF_MQTT_ADAPTER_MQTT_TARGET_PORT"
 	envMQTTTargetHealthCheck = "MF_MQTT_ADAPTER_MQTT_TARGET_HEALTH_CHECK"
 	envMQTTForwarderTimeout  = "MF_MQTT_ADAPTER_FORWARDER_TIMEOUT"
-	// HTTP
-	defHTTPPort       = "8080"
-	defHTTPTargetHost = "localhost"
-	defHTTPTargetPort = "8080"
-	defHTTPTargetPath = "/mqtt"
-	envHTTPPort       = "MF_MQTT_ADAPTER_WS_PORT"
-	envHTTPTargetHost = "MF_MQTT_ADAPTER_WS_TARGET_HOST"
-	envHTTPTargetPort = "MF_MQTT_ADAPTER_WS_TARGET_PORT"
-	envHTTPTargetPath = "MF_MQTT_ADAPTER_WS_TARGET_PATH"
-	// Things
-	defThingsAuthURL     = "localhost:8183"
-	defThingsAuthTimeout = "1s"
-	envThingsAuthURL     = "MF_THINGS_AUTH_GRPC_URL"
-	envThingsAuthTimeout = "MF_THINGS_AUTH_GRPC_TIMEOUT"
-	// Nats
-	defNatsURL = "nats://localhost:4222"
-	envNatsURL = "MF_NATS_URL"
-	// Jaeger
-	defJaegerURL = ""
-	envJaegerURL = "MF_JAEGER_URL"
-	// TLS
-	defClientTLS = "false"
-	defCACerts   = ""
-	envClientTLS = "MF_MQTT_ADAPTER_CLIENT_TLS"
-	envCACerts   = "MF_MQTT_ADAPTER_CA_CERTS"
-	// Instance
-	envInstance = "MF_MQTT_ADAPTER_INSTANCE"
-	defInstance = ""
-	// ES
-	envESURL  = "MF_MQTT_ADAPTER_ES_URL"
-	envESPass = "MF_MQTT_ADAPTER_ES_PASS"
-	envESDB   = "MF_MQTT_ADAPTER_ES_DB"
-	defESURL  = "localhost:6379"
-	defESPass = ""
-	defESDB   = "0"
-	// Auth cache
-	envAuthCacheURL  = "MF_AUTH_CACHE_URL"
-	envAuthCachePass = "MF_AUTH_CACHE_PASS"
-	envAuthCacheDB   = "MF_AUTH_CACHE_DB"
-	defAuthcacheURL  = "localhost:6379"
-	defAuthCachePass = ""
-	defAuthCacheDB   = "0"
+	envHTTPPort              = "MF_MQTT_ADAPTER_WS_PORT"
+	envHTTPTargetHost        = "MF_MQTT_ADAPTER_WS_TARGET_HOST"
+	envHTTPTargetPort        = "MF_MQTT_ADAPTER_WS_TARGET_PORT"
+	envHTTPTargetPath        = "MF_MQTT_ADAPTER_WS_TARGET_PATH"
+	envThingsAuthURL         = "MF_THINGS_AUTH_GRPC_URL"
+	envThingsAuthTimeout     = "MF_THINGS_AUTH_GRPC_TIMEOUT"
+	envBrokerURL             = "MF_BROKER_URL"
+	envJaegerURL             = "MF_JAEGER_URL"
+	envClientTLS             = "MF_MQTT_ADAPTER_CLIENT_TLS"
+	envCACerts               = "MF_MQTT_ADAPTER_CA_CERTS"
+	envInstance              = "MF_MQTT_ADAPTER_INSTANCE"
+	envESURL                 = "MF_MQTT_ADAPTER_ES_URL"
+	envESPass                = "MF_MQTT_ADAPTER_ES_PASS"
+	envESDB                  = "MF_MQTT_ADAPTER_ES_DB"
+	envAuthCacheURL          = "MF_AUTH_CACHE_URL"
+	envAuthCachePass         = "MF_AUTH_CACHE_PASS"
+	envAuthCacheDB           = "MF_AUTH_CACHE_DB"
 )

 type config struct {
@@ -108,7 +100,7 @@ type config struct {
 	thingsURL             string
 	thingsAuthURL         string
 	thingsAuthTimeout     time.Duration
-	natsURL               string
+	brokerURL             string
 	clientTLS             bool
 	caCerts               string
 	instance              string
@@ -148,9 +140,9 @@ func main() {
 	ec := connectToRedis(cfg.esURL, cfg.esPass, cfg.esDB, logger)
 	defer ec.Close()

-	nps, err := nats.NewPubSub(cfg.natsURL, "mqtt", logger)
+	nps, err := brokers.NewPubSub(cfg.brokerURL, "mqtt", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer nps.Close()
@@ -161,15 +153,15 @@ func main() {
 		os.Exit(1)
 	}

-	fwd := mqtt.NewForwarder(nats.SubjectAllChannels, logger)
+	fwd := mqtt.NewForwarder(brokers.SubjectAllChannels, logger)
 	if err := fwd.Forward(svcName, nps, mpub); err != nil {
-		logger.Error(fmt.Sprintf("Failed to forward NATS messages: %s", err))
+		logger.Error(fmt.Sprintf("Failed to forward message broker messages: %s", err))
 		os.Exit(1)
 	}

-	np, err := nats.NewPublisher(cfg.natsURL)
+	np, err := brokers.NewPublisher(cfg.brokerURL)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer np.Close()
@@ -241,7 +233,7 @@ func loadConfig() config {
 		thingsAuthURL:         mainflux.Env(envThingsAuthURL, defThingsAuthURL),
 		thingsAuthTimeout:     authTimeout,
 		thingsURL:             mainflux.Env(envThingsAuthURL, defThingsAuthURL),
-		natsURL:               mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:             mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:              mainflux.Env(envLogLevel, defLogLevel),
 		clientTLS:             tls,
 		caCerts:               mainflux.Env(envCACerts, defCACerts),
@@ -21,7 +21,7 @@ import (
 	"github.com/mainflux/mainflux/opcua/gopcua"
 	"github.com/mainflux/mainflux/opcua/redis"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	"golang.org/x/sync/errgroup"

 	kitprometheus "github.com/go-kit/kit/metrics/prometheus"
@@ -38,7 +38,7 @@ const (
 	defOPCMode        = ""
 	defOPCCertFile    = ""
 	defOPCKeyFile     = ""
-	defNatsURL        = "nats://localhost:4222"
+	defBrokerURL      = "nats://localhost:4222"
 	defESURL          = "localhost:6379"
 	defESPass         = ""
 	defESDB           = "0"
@@ -54,7 +54,7 @@ const (
 	envOPCMode        = "MF_OPCUA_ADAPTER_MODE"
 	envOPCCertFile    = "MF_OPCUA_ADAPTER_CERT_FILE"
 	envOPCKeyFile     = "MF_OPCUA_ADAPTER_KEY_FILE"
-	envNatsURL        = "MF_NATS_URL"
+	envBrokerURL      = "MF_BROKER_URL"
 	envESURL          = "MF_THINGS_ES_URL"
 	envESPass         = "MF_THINGS_ES_PASS"
 	envESDB           = "MF_THINGS_ES_DB"
@@ -71,7 +71,7 @@ const (
 type config struct {
 	httpPort       string
 	opcuaConfig    opcua.Config
-	natsURL        string
+	brokerURL      string
 	logLevel       string
 	esURL          string
 	esPass         string
@@ -102,9 +102,9 @@ func main() {
 	esConn := connectToRedis(cfg.esURL, cfg.esPass, cfg.esDB, logger)
 	defer esConn.Close()

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -162,7 +162,7 @@ func loadConfig() config {
 	return config{
 		httpPort:       mainflux.Env(envHTTPPort, defHTTPPort),
 		opcuaConfig:    oc,
-		natsURL:        mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:      mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:       mainflux.Env(envLogLevel, defLogLevel),
 		esURL:          mainflux.Env(envESURL, defESURL),
 		esPass:         mainflux.Env(envESPass, defESPass),
@@ -19,7 +19,7 @@ import (
 	"github.com/mainflux/mainflux/consumers/writers/postgres"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
 	"golang.org/x/sync/errgroup"
 )
@@ -29,7 +29,7 @@ const (
 	stopWaitTime = 5 * time.Second

 	defLogLevel      = "error"
-	defNatsURL       = "nats://localhost:4222"
+	defBrokerURL     = "nats://localhost:4222"
 	defPort          = "8180"
 	defDBHost        = "localhost"
 	defDBPort        = "5432"
@@ -42,7 +42,7 @@ const (
 	defDBSSLRootCert = ""
 	defConfigPath    = "/config.toml"

-	envNatsURL       = "MF_NATS_URL"
+	envBrokerURL     = "MF_BROKER_URL"
 	envLogLevel      = "MF_POSTGRES_WRITER_LOG_LEVEL"
 	envPort          = "MF_POSTGRES_WRITER_PORT"
 	envDBHost        = "MF_POSTGRES_WRITER_DB_HOST"
@@ -58,7 +58,7 @@ const (
 )

 type config struct {
-	natsURL    string
+	brokerURL  string
 	logLevel   string
 	port       string
 	configPath string
@@ -75,9 +75,9 @@ func main() {
 		log.Fatalf(err.Error())
 	}

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -123,7 +123,7 @@ func loadConfig() config {
 	}

 	return config{
-		natsURL:    mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:  mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:   mainflux.Env(envLogLevel, defLogLevel),
 		port:       mainflux.Env(envPort, defPort),
 		configPath: mainflux.Env(envConfigPath, defConfigPath),
@@ -28,7 +28,7 @@ import (
 	"github.com/mainflux/mainflux/consumers/notifiers/tracing"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	"github.com/mainflux/mainflux/pkg/ulid"
 	opentracing "github.com/opentracing/opentracing-go"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
@@ -56,7 +56,7 @@ const (
 	defServerKey     = ""
 	defFrom          = ""
 	defJaegerURL     = ""
-	defNatsURL       = "nats://localhost:4222"
+	defBrokerURL     = "nats://localhost:4222"

 	defSmppAddress    = ""
 	defSmppUsername   = ""
@@ -88,7 +88,7 @@ const (
 	envServerKey     = "MF_SMPP_NOTIFIER_SERVER_KEY"
 	envFrom          = "MF_SMPP_NOTIFIER_SOURCE_ADDR"
 	envJaegerURL     = "MF_JAEGER_URL"
-	envNatsURL       = "MF_NATS_URL"
+	envBrokerURL     = "MF_BROKER_URL"

 	envSmppAddress    = "MF_SMPP_ADDRESS"
 	envSmppUsername   = "MF_SMPP_USERNAME"
@@ -106,7 +106,7 @@ const (
 )

 type config struct {
-	natsURL     string
+	brokerURL   string
 	configPath  string
 	logLevel    string
 	dbConfig    postgres.Config
@@ -135,9 +135,9 @@ func main() {
 	db := connectToDB(cfg.dbConfig, logger)
 	defer db.Close()

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -233,7 +233,7 @@ func loadConfig() config {

 	return config{
 		logLevel:    mainflux.Env(envLogLevel, defLogLevel),
-		natsURL:     mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:   mainflux.Env(envBrokerURL, defBrokerURL),
 		configPath:  mainflux.Env(envConfigPath, defConfigPath),
 		dbConfig:    dbConfig,
 		smppConf:    smppConf,
@@ -27,7 +27,7 @@ import (
 	"github.com/mainflux/mainflux/internal/email"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	"github.com/mainflux/mainflux/pkg/ulid"
 	opentracing "github.com/opentracing/opentracing-go"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
@@ -56,7 +56,7 @@ const (
 	defServerKey     = ""
 	defFrom          = ""
 	defJaegerURL     = ""
-	defNatsURL       = "nats://localhost:4222"
+	defBrokerURL     = "nats://localhost:4222"

 	defEmailHost        = "localhost"
 	defEmailPort        = "25"
@@ -87,7 +87,7 @@ const (
 	envServerKey     = "MF_SMTP_NOTIFIER_SERVER_KEY"
 	envFrom          = "MF_SMTP_NOTIFIER_FROM_ADDR"
 	envJaegerURL     = "MF_JAEGER_URL"
-	envNatsURL       = "MF_NATS_URL"
+	envBrokerURL     = "MF_BROKER_URL"

 	envEmailHost        = "MF_EMAIL_HOST"
 	envEmailPort        = "MF_EMAIL_PORT"
@@ -104,7 +104,7 @@ const (
 )

 type config struct {
-	natsURL     string
+	brokerURL   string
 	configPath  string
 	logLevel    string
 	dbConfig    postgres.Config
@@ -133,9 +133,9 @@ func main() {
 	db := connectToDB(cfg.dbConfig, logger)
 	defer db.Close()

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -213,7 +213,7 @@ func loadConfig() config {

 	return config{
 		logLevel:    mainflux.Env(envLogLevel, defLogLevel),
-		natsURL:     mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:   mainflux.Env(envBrokerURL, defBrokerURL),
 		configPath:  mainflux.Env(envConfigPath, defConfigPath),
 		dbConfig:    dbConfig,
 		emailConf:   emailConf,
@@ -19,7 +19,7 @@ import (
 	"github.com/mainflux/mainflux/consumers/writers/timescale"
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	stdprometheus "github.com/prometheus/client_golang/prometheus"
 	"golang.org/x/sync/errgroup"
 )
@@ -29,7 +29,7 @@ const (
 	stopWaitTime = 5 * time.Second

 	defLogLevel      = "error"
-	defNatsURL       = "nats://localhost:4222"
+	defBrokerURL     = "nats://localhost:4222"
 	defPort          = "8180"
 	defDBHost        = "localhost"
 	defDBPort        = "5432"
@@ -42,7 +42,7 @@ const (
 	defDBSSLRootCert = ""
 	defConfigPath    = "/config.toml"

-	envNatsURL       = "MF_NATS_URL"
+	envBrokerURL     = "MF_BROKER_URL"
 	envLogLevel      = "MF_TIMESCALE_WRITER_LOG_LEVEL"
 	envPort          = "MF_TIMESCALE_WRITER_PORT"
 	envDBHost        = "MF_TIMESCALE_WRITER_DB_HOST"
@@ -58,7 +58,7 @@ const (
 )

 type config struct {
-	natsURL    string
+	brokerURL  string
 	logLevel   string
 	port       string
 	configPath string
@@ -75,9 +75,9 @@ func main() {
 		log.Fatalf(err.Error())
 	}

-	pubSub, err := nats.NewPubSub(cfg.natsURL, "", logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, "", logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -122,7 +122,7 @@ func loadConfig() config {
 	}

 	return config{
-		natsURL:    mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:  mainflux.Env(envBrokerURL, defBrokerURL),
 		logLevel:   mainflux.Env(envLogLevel, defLogLevel),
 		port:       mainflux.Env(envPort, defPort),
 		configPath: mainflux.Env(envConfigPath, defConfigPath),
@@ -21,7 +21,7 @@ import (
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
 	"github.com/mainflux/mainflux/pkg/messaging"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	"github.com/mainflux/mainflux/pkg/uuid"
 	localusers "github.com/mainflux/mainflux/things/standalone"
 	"github.com/mainflux/mainflux/twins"
@@ -59,7 +59,7 @@ const (
 	defClientTLS       = "false"
 	defCACerts         = ""
 	defChannelID       = ""
-	defNatsURL         = "nats://localhost:4222"
+	defBrokerURL       = "nats://localhost:4222"
 	defAuthURL         = "localhost:8181"
 	defAuthTimeout     = "1s"

@@ -79,7 +79,7 @@ const (
 	envClientTLS       = "MF_TWINS_CLIENT_TLS"
 	envCACerts         = "MF_TWINS_CA_CERTS"
 	envChannelID       = "MF_TWINS_CHANNEL_ID"
-	envNatsURL         = "MF_NATS_URL"
+	envBrokerURL       = "MF_BROKER_URL"
 	envAuthURL         = "MF_AUTH_GRPC_URL"
 	envAuthTimeout     = "MF_AUTH_GRPC_TIMEOUT"
 )
@@ -99,7 +99,7 @@ type config struct {
 	clientTLS       bool
 	caCerts         string
 	channelID       string
-	natsURL         string
+	brokerURL       string

 	authURL     string
 	authTimeout time.Duration
@@ -131,9 +131,9 @@ func main() {
 	defer authCloser.Close()
 	auth, _ := createAuthClient(cfg, authTracer, logger)

-	pubSub, err := nats.NewPubSub(cfg.natsURL, queue, logger)
+	pubSub, err := brokers.NewPubSub(cfg.brokerURL, queue, logger)
 	if err != nil {
-		logger.Error(fmt.Sprintf("Failed to connect to NATS: %s", err))
+		logger.Error(fmt.Sprintf("Failed to connect to message broker: %s", err))
 		os.Exit(1)
 	}
 	defer pubSub.Close()
@@ -192,7 +192,7 @@ func loadConfig() config {
 		clientTLS:       tls,
 		caCerts:         mainflux.Env(envCACerts, defCACerts),
 		channelID:       mainflux.Env(envChannelID, defChannelID),
-		natsURL:         mainflux.Env(envNatsURL, defNatsURL),
+		brokerURL:       mainflux.Env(envBrokerURL, defBrokerURL),
 		authURL:         mainflux.Env(envAuthURL, defAuthURL),
 		authTimeout:     authTimeout,
 	}
@@ -298,12 +298,11 @@ func newService(id string, ps messaging.PubSub, chanID string, users mainflux.Au
 			Help:      "Total duration of requests in microseconds.",
 		}, []string{"method"}),
 	)
-	err := ps.Subscribe(id, nats.SubjectAllChannels, handle(logger, chanID, svc))
+	err := ps.Subscribe(id, brokers.SubjectAllChannels, handle(logger, chanID, svc))
 	if err != nil {
 		logger.Error(err.Error())
 		os.Exit(1)
 	}
-
 	return svc
 }

@@ -12,7 +12,7 @@ default values.
 | Variable                       | Description                                            | Default               |
 |--------------------------------|--------------------------------------------------------|-----------------------|
 | MF_COAP_ADAPTER_PORT           | Service listening port                                 | 5683                  |
-| MF_NATS_URL                    | NATS instance URL                                      | nats://localhost:4222 |
+| MF_BROKER_URL                  | Message broker instance URL                            | nats://localhost:4222 |
 | MF_COAP_ADAPTER_LOG_LEVEL      | Service log level                                      | error                 |
 | MF_COAP_ADAPTER_CLIENT_TLS     | Flag that indicates if TLS should be turned on         | false                 |
 | MF_COAP_ADAPTER_CA_CERTS       | Path to trusted CAs in PEM format                      |                       |
@@ -26,7 +26,7 @@ default values.
 The service itself is distributed as Docker container. Check the [`coap-adapter`](https://github.com/mainflux/mainflux/blob/master/docker/docker-compose.yml#L273-L291) service section in 
 docker-compose to see how service is deployed.

-Running this service outside of container requires working instance of the NATS service.
+Running this service outside of container requires working instance of the message broker service.
 To start the service outside of the container, execute the following shell script:

 ```bash
@@ -42,7 +42,7 @@ make coap
 make install

 # set the environment variables and run the service
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_COAP_ADAPTER_PORT=[Service HTTP port] \
 MF_COAP_ADAPTER_LOG_LEVEL=[Service log level] \
 MF_COAP_ADAPTER_CLIENT_TLS=[Flag that indicates if TLS should be turned on] \
@@ -12,7 +12,6 @@ import (
 	"sync"

 	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging/nats"

 	"github.com/mainflux/mainflux"
 	"github.com/mainflux/mainflux/pkg/messaging"
@@ -41,12 +40,12 @@ var _ Service = (*adapterService)(nil)
 // Observers is a map of maps,
 type adapterService struct {
 	auth    mainflux.ThingsServiceClient
-	pubsub  nats.PubSub
+	pubsub  messaging.PubSub
 	obsLock sync.Mutex
 }

 // New instantiates the CoAP adapter implementation.
-func New(auth mainflux.ThingsServiceClient, pubsub nats.PubSub) Service {
+func New(auth mainflux.ThingsServiceClient, pubsub messaging.PubSub) Service {
 	as := &adapterService{
 		auth:    auth,
 		pubsub:  pubsub,
@@ -14,7 +14,7 @@ import (
 	"github.com/mainflux/mainflux/logger"
 	"github.com/mainflux/mainflux/pkg/errors"
 	"github.com/mainflux/mainflux/pkg/messaging"
-	pubsub "github.com/mainflux/mainflux/pkg/messaging/nats"
+	"github.com/mainflux/mainflux/pkg/messaging/brokers"
 	"github.com/mainflux/mainflux/pkg/transformers"
 	"github.com/mainflux/mainflux/pkg/transformers/json"
 	"github.com/mainflux/mainflux/pkg/transformers/senml"
@@ -30,7 +30,7 @@ var (
 	errParseConfFile = errors.New("unable to parse configuration file")
 )

-// Start method starts consuming messages received from NATS.
+// Start method starts consuming messages received from Message broker.
 // This method transforms messages to SenML format before
 // using MessageRepository to store them.
 func Start(id string, sub messaging.Subscriber, consumer Consumer, configPath string, logger logger.Logger) error {
@@ -92,7 +92,7 @@ type config struct {
 func loadConfig(configPath string) (config, error) {
 	cfg := config{
 		SubscriberCfg: subscriberConfig{
-			Subjects: []string{pubsub.SubjectAllChannels},
+			Subjects: []string{brokers.SubjectAllChannels},
 		},
 		TransformerCfg: transformerConfig{
 			Format:      defFormat,
@@ -25,7 +25,7 @@ default values.
 | MF_SMPP_NOTIFIER_SERVER_CERT        | Path to server cert in pem format                                     |                       |
 | MF_SMPP_NOTIFIER_SERVER_KEY         | Path to server key in pem format                                      |                       |
 | MF_JAEGER_URL                       | Jaeger server URL                                                     | localhost:6831        |
-| MF_NATS_URL                         | NATS broker URL                                                       | nats://127.0.0.1:4222 |
+| MF_BROKER_URL                       | Message broker URL                                                    | nats://127.0.0.1:4222 |
 | MF_SMPP_ADDRESS                     | SMPP address [host:port]                                              |                       |
 | MF_SMPP_USERNAME                    | SMPP Username                                                         |                       |
 | MF_SMPP_PASSWORD                    | SMPP Password                                                         |                       |
@@ -16,7 +16,7 @@ default values.
 | MF_SMTP_NOTIFIER_DB_USER          | Database user                                                           | mainflux              |
 | MF_SMTP_NOTIFIER_DB_PASS          | Database password                                                       | mainflux              |
 | MF_SMTP_NOTIFIER_DB               | Name of the database used by the service                                | subscriptions         |
-| MF_SMTP_NOTIFIER_CONFIG_PATH      | Path to the config file with NATS subjects configuration                | disable               |
+| MF_SMTP_NOTIFIER_CONFIG_PATH      | Path to the config file with message broker subjects configuration      | disable               |
 | MF_SMTP_NOTIFIER_DB_SSL_MODE      | Database connection SSL mode (disable, require, verify-ca, verify-full) |                       |
 | MF_SMTP_NOTIFIER_DB_SSL_CERT      | Path to the PEM encoded cert file                                       |                       |
 | MF_SMTP_NOTIFIER_DB_SSL_KEY       | Path to the PEM encoded certificate key                                 |                       |
@@ -25,7 +25,7 @@ default values.
 | MF_SMTP_NOTIFIER_SERVER_CERT      | Path to server cert in pem format                                       |                       |
 | MF_SMTP_NOTIFIER_SERVER_KEY       | Path to server key in pem format                                        |                       |
 | MF_JAEGER_URL                     | Jaeger server URL                                                       | localhost:6831        |
-| MF_NATS_URL                       | NATS broker URL                                                         | nats://127.0.0.1:4222 |
+| MF_BROKER_URL                     | Message broker URL                                                      | nats://127.0.0.1:4222 |
 | MF_EMAIL_HOST                     | Mail server host                                                        | localhost             |
 | MF_EMAIL_PORT                     | Mail server port                                                        | 25                    |
 | MF_EMAIL_USERNAME                 | Mail server username                                                    |                       |
@@ -10,7 +10,7 @@ default values.

 | Variable                         | Description                                                             | Default               |
 | -------------------------------- | ----------------------------------------------------------------------- | --------------------- |
-| MF_NATS_URL                      | NATS instance URL                                                       | nats://localhost:4222 |
+| MF_BROKER_URL                    | Message broker instance URL                                             | nats://localhost:4222 |
 | MF_CASSANDRA_WRITER_LOG_LEVEL    | Log level for Cassandra writer (debug, info, warn, error)               | error                 |
 | MF_CASSANDRA_WRITER_PORT         | Service HTTP port                                                       | 8180                  |
 | MF_CASSANDRA_WRITER_DB_CLUSTER   | Cassandra cluster comma separated addresses                             | 127.0.0.1             |
@@ -38,7 +38,7 @@ make cassandra-writer
 make install

 # Set the environment variables and run the service
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[NATS instance URL] \
 MF_CASSANDRA_WRITER_LOG_LEVEL=[Cassandra writer log level] \
 MF_CASSANDRA_WRITER_PORT=[Service HTTP port] \
 MF_CASSANDRA_WRITER_DB_CLUSTER=[Cassandra cluster comma separated addresses] \
@@ -8,17 +8,17 @@ The service is configured using the environment variables presented in the
 following table. Note that any unset variables will be replaced with their
 default values.

-| Variable                      | Description                                                             | Default                |
-| ----------------------------- | ----------------------------------------------------------------------- | ---------------------- |
-| MF_NATS_URL                   | NATS instance URL                                                       | nats://localhost:4222  |
-| MF_INFLUX_WRITER_LOG_LEVEL    | Log level for InfluxDB writer (debug, info, warn, error)                | error                  |
-| MF_INFLUX_WRITER_PORT         | Service HTTP port                                                       | 8180                   |
-| MF_INFLUXDB_HOST              | InfluxDB host                                                           | localhost              |
-| MF_INFLUXDB_PORT              | Default port of InfluxDB database                                       | 8086                   |
-| MF_INFLUXDB_ADMIN_USER        | Default user of InfluxDB database                                       | mainflux               |
-| MF_INFLUXDB_ADMIN_PASSWORD    | Default password of InfluxDB user                                       | mainflux               |
-| MF_INFLUXDB_DB                | InfluxDB database name                                                  | mainflux               |
-| MF_INFLUX_WRITER_CONFIG_PATH  | Config file path with NATS subjects list, payload type and content-type | /configs.toml          |
+| Variable                      | Description                                                                       | Default                |
+| ----------------------------- | --------------------------------------------------------------------------------- | ---------------------- |
+| MF_BROKER_URL                 | Message broker instance URL                                                       | nats://localhost:4222  |
+| MF_INFLUX_WRITER_LOG_LEVEL    | Log level for InfluxDB writer (debug, info, warn, error)                          | error                  |
+| MF_INFLUX_WRITER_PORT         | Service HTTP port                                                                 | 8180                   |
+| MF_INFLUX_WRITER_DB_HOST      | InfluxDB host                                                                     | localhost              |
+| MF_INFLUXDB_PORT              | Default port of InfluxDB database                                                 | 8086                   |
+| MF_INFLUXDB_ADMIN_USER        | Default user of InfluxDB database                                                 | mainflux               |
+| MF_INFLUXDB_ADMIN_PASSWORD    | Default password of InfluxDB user                                                 | mainflux               |
+| MF_INFLUXDB_DB                | InfluxDB database name                                                            | mainflux               |
+| MF_INFLUX_WRITER_CONFIG_PATH  | Config file path with message broker subjects list, payload type and content-type | /configs.toml          |

 ## Deployment

@@ -39,7 +39,7 @@ make influxdb
 make install

 # Set the environment variables and run the service
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_INFLUX_WRITER_LOG_LEVEL=[Influx writer log level] \
 MF_INFLUX_WRITER_PORT=[Service HTTP port] \
 MF_INFLUXDB_DB=[InfluxDB database name] \
@@ -47,7 +47,7 @@ MF_INFLUXDB_HOST=[InfluxDB database host] \
 MF_INFLUXDB_PORT=[InfluxDB database port] \
 MF_INFLUXDB_ADMIN_USER=[InfluxDB admin user] \
 MF_INFLUXDB_ADMIN_PASSWORD=[InfluxDB admin password] \
-MF_INFLUX_WRITER_CONFIG_PATH=[Config file path with NATS subjects list, payload type and content-type] \
+MF_INFLUX_WRITER_CONFIG_PATH=[Config file path with Message broker subjects list, payload type and content-type] \
 $GOBIN/mainflux-influxdb
 ```

@@ -8,15 +8,15 @@ The service is configured using the environment variables presented in the
 following table. Note that any unset variables will be replaced with their
 default values.

-| Variable                     | Description                                                             | Default                |
-| ---------------------------- | ----------------------------------------------------------------------- | ---------------------- |
-| MF_NATS_URL                  | NATS instance URL                                                       | nats://localhost:4222  |
-| MF_MONGO_WRITER_LOG_LEVEL    | Log level for MongoDB writer                                            | error                  |
-| MF_MONGO_WRITER_PORT         | Service HTTP port                                                       | 8180                   |
-| MF_MONGO_WRITER_DB           | Default MongoDB database name                                           | messages               |
-| MF_MONGO_WRITER_DB_HOST      | Default MongoDB database host                                           | localhost              |
-| MF_MONGO_WRITER_DB_PORT      | Default MongoDB database port                                           | 27017                  |
-| MF_MONGO_WRITER_CONFIG_PATH  | Config file path with NATS subjects list, payload type and content-type | /config.toml           |
+| Variable                     | Description                                                                       | Default                |
+| ---------------------------- | --------------------------------------------------------------------------------- | ---------------------- |
+| MF_BROKER_URL                | Message broker instance URL                                                       | nats://localhost:4222  |
+| MF_MONGO_WRITER_LOG_LEVEL    | Log level for MongoDB writer                                                      | error                  |
+| MF_MONGO_WRITER_PORT         | Service HTTP port                                                                 | 8180                   |
+| MF_MONGO_WRITER_DB           | Default MongoDB database name                                                     | messages               |
+| MF_MONGO_WRITER_DB_HOST      | Default MongoDB database host                                                     | localhost              |
+| MF_MONGO_WRITER_DB_PORT      | Default MongoDB database port                                                     | 27017                  |
+| MF_MONGO_WRITER_CONFIG_PATH  | Config file path with Message broker subjects list, payload type and content-type | /config.toml           |

 ## Deployment

@@ -37,13 +37,13 @@ make mongodb-writer
 make install

 # Set the environment variables and run the service
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_MONGO_WRITER_LOG_LEVEL=[MongoDB writer log level] \
 MF_MONGO_WRITER_PORT=[Service HTTP port] \
 MF_MONGO_WRITER_DB=[MongoDB database name] \
 MF_MONGO_WRITER_DB_HOST=[MongoDB database host] \
 MF_MONGO_WRITER_DB_PORT=[MongoDB database port] \
-MF_MONGO_WRITER_CONFIG_PATH=[Configuration file path with NATS subjects list] \
+MF_MONGO_WRITER_CONFIG_PATH=[Configuration file path with Message broker subjects list] \
 $GOBIN/mainflux-mongodb-writer
 ```

@@ -8,21 +8,21 @@ The service is configured using the environment variables presented in the
 following table. Note that any unset variables will be replaced with their
 default values.

-| Variable                            | Description                                                             | Default                |
-| ----------------------------------- | ----------------------------------------------------------------------- | ---------------------- |
-| MF_NATS_URL                         | NATS instance URL                                                       | nats://localhost:4222  |
-| MF_POSTGRES_WRITER_LOG_LEVEL        | Service log level                                                       | error                  |
-| MF_POSTGRES_WRITER_PORT             | Service HTTP port                                                       | 9104                   |
-| MF_POSTGRES_WRITER_DB_HOST          | Postgres DB host                                                        | postgres               |
-| MF_POSTGRES_WRITER_DB_PORT          | Postgres DB port                                                        | 5432                   |
-| MF_POSTGRES_WRITER_DB_USER          | Postgres user                                                           | mainflux               |
-| MF_POSTGRES_WRITER_DB_PASS          | Postgres password                                                       | mainflux               |
-| MF_POSTGRES_WRITER_DB               | Postgres database name                                                  | messages               |
-| MF_POSTGRES_WRITER_DB_SSL_MODE      | Postgres SSL mode                                                       | disabled               |
-| MF_POSTGRES_WRITER_DB_SSL_CERT      | Postgres SSL certificate path                                           | ""                     |
-| MF_POSTGRES_WRITER_DB_SSL_KEY       | Postgres SSL key                                                        | ""                     |
-| MF_POSTGRES_WRITER_DB_SSL_ROOT_CERT | Postgres SSL root certificate path                                      | ""                     |
-| MF_POSTGRES_WRITER_CONFIG_PATH      | Config file path with NATS subjects list, payload type and content-type | /config.toml           |
+| Variable                            | Description                                                                       | Default                |
+| ----------------------------------- | --------------------------------------------------------------------------------- | ---------------------- |
+| MF_BROKER_URL                       | Message broker instance URL                                                       | nats://localhost:4222  |
+| MF_POSTGRES_WRITER_LOG_LEVEL        | Service log level                                                                 | error                  |
+| MF_POSTGRES_WRITER_PORT             | Service HTTP port                                                                 | 9104                   |
+| MF_POSTGRES_WRITER_DB_HOST          | Postgres DB host                                                                  | postgres               |
+| MF_POSTGRES_WRITER_DB_PORT          | Postgres DB port                                                                  | 5432                   |
+| MF_POSTGRES_WRITER_DB_USER          | Postgres user                                                                     | mainflux               |
+| MF_POSTGRES_WRITER_DB_PASS          | Postgres password                                                                 | mainflux               |
+| MF_POSTGRES_WRITER_DB               | Postgres database name                                                            | messages               |
+| MF_POSTGRES_WRITER_DB_SSL_MODE      | Postgres SSL mode                                                                 | disabled               |
+| MF_POSTGRES_WRITER_DB_SSL_CERT      | Postgres SSL certificate path                                                     | ""                     |
+| MF_POSTGRES_WRITER_DB_SSL_KEY       | Postgres SSL key                                                                  | ""                     |
+| MF_POSTGRES_WRITER_DB_SSL_ROOT_CERT | Postgres SSL root certificate path                                                | ""                     |
+| MF_POSTGRES_WRITER_CONFIG_PATH      | Config file path with Message broker subjects list, payload type and content-type | /config.toml           |

 ## Deployment

@@ -43,7 +43,7 @@ make postgres-writer
 make install

 # Set the environment variables and run the service
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_POSTGRES_WRITER_LOG_LEVEL=[Service log level] \
 MF_POSTGRES_WRITER_PORT=[Service HTTP port] \
 MF_POSTGRES_WRITER_DB_HOST=[Postgres host] \
@@ -55,7 +55,7 @@ MF_POSTGRES_WRITER_DB_SSL_MODE=[Postgres SSL mode] \
 MF_POSTGRES_WRITER_DB_SSL_CERT=[Postgres SSL cert] \
 MF_POSTGRES_WRITER_DB_SSL_KEY=[Postgres SSL key] \
 MF_POSTGRES_WRITER_DB_SSL_ROOT_CERT=[Postgres SSL Root cert] \
-MF_POSTGRES_WRITER_CONFIG_PATH=[Config file path with NATS subjects list, payload type and content-type] \
+MF_POSTGRES_WRITER_CONFIG_PATH=[Config file path with Message broker subjects list, payload type and content-type] \
 $GOBIN/mainflux-postgres-writer
 ```

@@ -8,21 +8,21 @@ The service is configured using the environment variables presented in the
 following table. Note that any unset variables will be replaced with their
 default values.

-| Variable                             | Description                                     | Default                |
-| -----------------------------------  | ----------------------------------------------- | ---------------------- |
-| MF_NATS_URL                          | NATS instance URL                               | nats://localhost:4222  |
-| MF_TIMESCALE_WRITER_LOG_LEVEL        | Service log level                               | error                  |
-| MF_TIMESCALE_WRITER_PORT             | Service HTTP port                               | 9104                   |
-| MF_TIMESCALE_WRITER_DB_HOST          | Timescale DB host                               | timescale              |
-| MF_TIMESCALE_WRITER_DB_PORT          | Timescale DB port                               | 5432                   |
-| MF_TIMESCALE_WRITER_DB_USER          | Timescale user                                  | mainflux               |
-| MF_TIMESCALE_WRITER_DB_PASS          | Timescale password                              | mainflux               |
-| MF_TIMESCALE_WRITER_DB               | Timescale database name                         | messages               |
-| MF_TIMESCALE_WRITER_DB_SSL_MODE      | Timescale SSL mode                              | disabled               |
-| MF_TIMESCALE_WRITER_DB_SSL_CERT      | Timescale SSL certificate path                  | ""                     |
-| MF_TIMESCALE_WRITER_DB_SSL_KEY       | Timescale SSL key                               | ""                     |
-| MF_TIMESCALE_WRITER_DB_SSL_ROOT_CERT | Timescale SSL root certificate path             | ""                     |
-| MF_TIMESCALE_WRITER_CONFIG_PATH      | Configuration file path with NATS subjects list | /config.toml           |
+| Variable                             | Description                                               | Default                |
+| -----------------------------------  | --------------------------------------------------------- | ---------------------- |
+| MF_BROKER_URL                        | Message broker instance URL                               | nats://localhost:4222  |
+| MF_TIMESCALE_WRITER_LOG_LEVEL        | Service log level                                         | error                  |
+| MF_TIMESCALE_WRITER_PORT             | Service HTTP port                                         | 9104                   |
+| MF_TIMESCALE_WRITER_DB_HOST          | Timescale DB host                                         | timescale              |
+| MF_TIMESCALE_WRITER_DB_PORT          | Timescale DB port                                         | 5432                   |
+| MF_TIMESCALE_WRITER_DB_USER          | Timescale user                                            | mainflux               |
+| MF_TIMESCALE_WRITER_DB_PASS          | Timescale password                                        | mainflux               |
+| MF_TIMESCALE_WRITER_DB               | Timescale database name                                   | messages               |
+| MF_TIMESCALE_WRITER_DB_SSL_MODE      | Timescale SSL mode                                        | disabled               |
+| MF_TIMESCALE_WRITER_DB_SSL_CERT      | Timescale SSL certificate path                            | ""                     |
+| MF_TIMESCALE_WRITER_DB_SSL_KEY       | Timescale SSL key                                         | ""                     |
+| MF_TIMESCALE_WRITER_DB_SSL_ROOT_CERT | Timescale SSL root certificate path                       | ""                     |
+| MF_TIMESCALE_WRITER_CONFIG_PATH      | Configuration file path with Message broker subjects list | /config.toml           |

 ## Deployment

@@ -43,7 +43,7 @@ make timescale-writer
 make install

 # Set the environment variables and run the service
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_TIMESCALE_WRITER_LOG_LEVEL=[Service log level] \
 MF_TIMESCALE_WRITER_PORT=[Service HTTP port] \
 MF_TIMESCALE_WRITER_DB_HOST=[Timescale host] \
@@ -55,7 +55,7 @@ MF_TIMESCALE_WRITER_DB_SSL_MODE=[Timescale SSL mode] \
 MF_TIMESCALE_WRITER_DB_SSL_CERT=[Timescale SSL cert] \
 MF_TIMESCALE_WRITER_DB_SSL_KEY=[Timescale SSL key] \
 MF_TIMESCALE_WRITER_DB_SSL_ROOT_CERT=[Timescale SSL Root cert] \
-MF_TIMESCALE_WRITER_CONFIG_PATH=[Configuration file path with NATS subjects list] \
+MF_TIMESCALE_WRITER_CONFIG_PATH=[Configuration file path with Message broker subjects list] \
 MF_TIMESCALE_WRITER_TRANSFORMER=[Message transformer type] \
 $GOBIN/mainflux-timescale-writer
 ```
@@ -6,8 +6,21 @@ MF_NGINX_SSL_PORT=443
 MF_NGINX_MQTT_PORT=1883
 MF_NGINX_MQTTS_PORT=8883

-## NATS
-MF_NATS_URL=nats://nats:4222
+# Message Broker
+MF_BROKER_TYPE=nats
+
+## Nats
+MF_NATS_PORT=4222
+MF_NATS_URL=nats://broker:${MF_NATS_PORT}
+
+## RabbitMQ
+MF_RABBITMQ_PORT=5672
+MF_RABBITMQ_HTTP_PORT=15672
+MF_RABBITMQ_USER=mainflux
+MF_RABBITMQ_PASS=mainflux
+MF_RABBITMQ_COOKIE=mainflux
+MF_RABBITMQ_VHOST=/
+MF_RABBITMQ_URL=amqp://${MF_RABBITMQ_USER}:${MF_RABBITMQ_PASS}@broker:${MF_RABBITMQ_PORT}${MF_MF_RABBITMQ_VHOST}

 ## Redis
 MF_REDIS_TCP_PORT=6379
@@ -35,7 +35,7 @@ services:
    restart: on-failure
    environment:
      MF_CASSANDRA_WRITER_LOG_LEVEL: ${MF_CASSANDRA_WRITER_LOG_LEVEL}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_CASSANDRA_WRITER_PORT: ${MF_CASSANDRA_WRITER_PORT}
      MF_CASSANDRA_WRITER_DB_PORT: ${MF_CASSANDRA_WRITER_DB_PORT}
      MF_CASSANDRA_WRITER_DB_CLUSTER: ${MF_CASSANDRA_WRITER_DB_CLUSTER}
@@ -41,7 +41,7 @@ services:
    restart: on-failure
    environment:
      MF_INFLUX_WRITER_LOG_LEVEL: debug
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_INFLUX_WRITER_PORT: ${MF_INFLUX_WRITER_PORT}
      MF_INFLUX_WRITER_BATCH_SIZE: ${MF_INFLUX_WRITER_BATCH_SIZE}
      MF_INFLUX_WRITER_BATCH_TIMEOUT: ${MF_INFLUX_WRITER_BATCH_TIMEOUT}
@@ -34,7 +34,7 @@ services:
      MF_LORA_ADAPTER_MESSAGES_PASS: ${MF_LORA_ADAPTER_MESSAGES_PASS}
      MF_LORA_ADAPTER_MESSAGES_TIMEOUT: ${MF_LORA_ADAPTER_MESSAGES_TIMEOUT}
      MF_LORA_ADAPTER_HTTP_PORT: ${MF_LORA_ADAPTER_HTTP_PORT}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
    ports:
      - ${MF_LORA_ADAPTER_HTTP_PORT}:${MF_LORA_ADAPTER_HTTP_PORT}
    networks:
@@ -41,7 +41,7 @@ services:
    restart: on-failure
    environment:
      MF_MONGO_WRITER_LOG_LEVEL: ${MF_MONGO_WRITER_LOG_LEVEL}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_MONGO_WRITER_PORT: ${MF_MONGO_WRITER_PORT}
      MF_MONGO_WRITER_DB: ${MF_MONGO_WRITER_DB}
      MF_MONGO_WRITER_DB_HOST: mongodb
@@ -33,7 +33,7 @@ services:
    environment:
      MF_OPCUA_ADAPTER_HTTP_PORT: ${MF_OPCUA_ADAPTER_HTTP_PORT}
      MF_OPCUA_ADAPTER_LOG_LEVEL: ${MF_OPCUA_ADAPTER_LOG_LEVEL}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_OPCUA_ADAPTER_POLICY: ${MF_OPCUA_ADAPTER_POLICY}
      MF_OPCUA_ADAPTER_MODE: ${MF_OPCUA_ADAPTER_MODE}
      MF_OPCUA_ADAPTER_CERT_FILE: ${MF_OPCUA_ADAPTER_CERT_FILE}
@@ -38,7 +38,7 @@ services:
      - postgres
    restart: on-failure
    environment:
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_POSTGRES_WRITER_LOG_LEVEL: ${MF_POSTGRES_WRITER_LOG_LEVEL}
      MF_POSTGRES_WRITER_PORT: ${MF_POSTGRES_WRITER_PORT}
      MF_POSTGRES_WRITER_DB_HOST: postgres
@@ -36,7 +36,7 @@ services:
      - smpp-notifier-db
    restart: on-failure
    environment:
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_JAEGER_URL: ${MF_JAEGER_URL}
      MF_AUTH_GRPC_URL: ${MF_AUTH_GRPC_URL}
      MF_AUTH_GRPC_TIMEOUT: ${MF_AUTH_GRPC_TIMEOUT}
@@ -43,7 +43,7 @@ services:
      MF_SMTP_NOTIFIER_DB_PASS: ${MF_SMTP_NOTIFIER_DB_PASS}
      MF_SMTP_NOTIFIER_DB: ${MF_SMTP_NOTIFIER_DB}
      MF_SMTP_NOTIFIER_PORT: ${MF_SMTP_NOTIFIER_PORT}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_JAEGER_URL: ${MF_JAEGER_URL}
      MF_AUTH_GRPC_URL: ${MF_AUTH_GRPC_URL}
      MF_AUTH_GRPC_TIMEOUT: ${MF_AUTH_GRPC_TIMEOUT}
@@ -38,7 +38,7 @@ services:
      - timescale
    restart: on-failure
    environment:
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_TIMESCALE_WRITER_LOG_LEVEL: ${MF_TIMESCALE_WRITER_LOG_LEVEL}
      MF_TIMESCALE_WRITER_PORT: ${MF_TIMESCALE_WRITER_PORT}
      MF_TIMESCALE_WRITER_DB_HOST: timescale
@@ -43,7 +43,7 @@ services:
      MF_TWINS_DB_HOST: ${MF_TWINS_DB_HOST}
      MF_TWINS_DB_PORT: ${MF_TWINS_DB_PORT}
      MF_TWINS_CHANNEL_ID: ${MF_TWINS_CHANNEL_ID}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_BROKER_URL}
      MF_AUTH_GRPC_URL: ${MF_AUTH_GRPC_URL}
      MF_AUTH_GRPC_TIMEOUT: ${MF_AUTH_GRPC_TIMEOUT}
      MF_TWINS_CACHE_URL: ${MF_TWINS_CACHE_URL}
@@ -0,0 +1,8 @@
+services:
+  broker:
+    image: nats:2.2.4-alpine
+    command: "-c /etc/nats/nats.conf"
+    volumes:
+      - ./../nats/:/etc/nats
+    ports:
+      - ${MF_NATS_PORT}:${MF_NATS_PORT}
@@ -0,0 +1,11 @@
+services:
+  broker:
+    image: rabbitmq:3.9.20-management-alpine
+    environment:
+      RABBITMQ_ERLANG_COOKIE: ${MF_RABBITMQ_COOKIE}
+      RABBITMQ_DEFAULT_USER: ${MF_RABBITMQ_USER}
+      RABBITMQ_DEFAULT_PASS: ${MF_RABBITMQ_PASS}
+      RABBITMQ_DEFAULT_VHOST: ${MF_RABBITMQ_VHOST}
+    ports:
+      - ${MF_RABBITMQ_PORT}:${MF_RABBITMQ_PORT}
+      - ${MF_RABBITMQ_HTTP_PORT}:${MF_RABBITMQ_HTTP_PORT}
@@ -95,13 +95,12 @@ services:
      - mqtt-adapter
      - http-adapter

-  nats:
-    image: nats:2.2.4-alpine
-    container_name: mainflux-nats
-    command: "-c /etc/nats/nats.conf"
+  broker:
+    extends:
+      file: brokers/nats.yml
+      service: broker
+    container_name: mainflux-broker
    restart: on-failure
-    volumes:
-      - ./nats/:/etc/nats
    networks:
      - mainflux-base-net
    ports:
@@ -280,14 +279,14 @@ services:
    depends_on:
      - vernemq
      - things
-      - nats
+      - broker
    restart: on-failure
    environment:
      MF_MQTT_ADAPTER_LOG_LEVEL: ${MF_MQTT_ADAPTER_LOG_LEVEL}
      MF_MQTT_ADAPTER_MQTT_PORT: ${MF_MQTT_ADAPTER_MQTT_PORT}
      MF_MQTT_ADAPTER_WS_PORT: ${MF_MQTT_ADAPTER_WS_PORT}
      MF_MQTT_ADAPTER_ES_URL: es-redis:${MF_REDIS_TCP_PORT}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_NATS_URL}
      MF_MQTT_ADAPTER_MQTT_TARGET_HOST: vernemq
      MF_MQTT_ADAPTER_MQTT_TARGET_PORT: ${MF_MQTT_BROKER_PORT}
      MF_MQTT_ADAPTER_MQTT_TARGET_HEALTH_CHECK: http://vernemq:8888/health
@@ -305,12 +304,12 @@ services:
    container_name: mainflux-http
    depends_on:
      - things
-      - nats
+      - broker
    restart: on-failure
    environment:
      MF_HTTP_ADAPTER_LOG_LEVEL: debug
      MF_HTTP_ADAPTER_PORT: ${MF_HTTP_ADAPTER_PORT}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_NATS_URL}
      MF_JAEGER_URL: ${MF_JAEGER_URL}
      MF_THINGS_AUTH_GRPC_URL: ${MF_THINGS_AUTH_GRPC_URL}
      MF_THINGS_AUTH_GRPC_TIMEOUT: ${MF_THINGS_AUTH_GRPC_TIMEOUT}
@@ -333,12 +332,12 @@ services:
    container_name: mainflux-coap
    depends_on:
      - things
-      - nats
+      - broker
    restart: on-failure
    environment:
      MF_COAP_ADAPTER_LOG_LEVEL: ${MF_COAP_ADAPTER_LOG_LEVEL}
      MF_COAP_ADAPTER_PORT: ${MF_COAP_ADAPTER_PORT}
-      MF_NATS_URL: ${MF_NATS_URL}
+      MF_BROKER_URL: ${MF_NATS_URL}
      MF_JAEGER_URL: ${MF_JAEGER_URL}
      MF_THINGS_AUTH_GRPC_URL: ${MF_THINGS_AUTH_GRPC_URL}
      MF_THINGS_AUTH_GRPC_TIMEOUT: ${MF_THINGS_AUTH_GRPC_TIMEOUT}
@@ -8,16 +8,16 @@ The service is configured using the environment variables presented in the
 following table. Note that any unset variables will be replaced with their
 default values.

-| Variable                    | Description                                         | Default               |
-| --------------------------- | --------------------------------------------------- | --------------------- |
-| MF_HTTP_ADAPTER_LOG_LEVEL   | Log level for the HTTP Adapter                      | error                 |
-| MF_HTTP_ADAPTER_PORT        | Service HTTP port                                   | 8180                  |
-| MF_NATS_URL                 | NATS instance URL                                   | nats://localhost:4222 |
-| MF_HTTP_ADAPTER_CLIENT_TLS  | Flag that indicates if TLS should be turned on      | false                 |
-| MF_HTTP_ADAPTER_CA_CERTS    | Path to trusted CAs in PEM format                   |                       |
-| MF_JAEGER_URL               | Jaeger server URL                                   | localhost:6831        |
-| MF_THINGS_AUTH_GRPC_URL     | Things service Auth gRPC URL                        | localhost:8181        |
-| MF_THINGS_AUTH_GRPC_TIMEOUT | Things service Auth gRPC request timeout in seconds | 1s                    |
+| Variable                    | Description                                                   | Default               |
+| --------------------------- | ------------------------------------------------------------- | --------------------- |
+| MF_HTTP_ADAPTER_LOG_LEVEL   | Log level for the HTTP Adapter                                | error                 |
+| MF_HTTP_ADAPTER_PORT        | Service HTTP port                                             | 8180                  |
+| MF_BROKER_URL               | Message broker instance URL                                   | nats://localhost:4222 |
+| MF_HTTP_ADAPTER_CLIENT_TLS  | Flag that indicates if TLS should be turned on                | false                 |
+| MF_HTTP_ADAPTER_CA_CERTS    | Path to trusted CAs in PEM format                             |                       |
+| MF_JAEGER_URL               | Jaeger server URL                                             | localhost:6831        |
+| MF_THINGS_AUTH_GRPC_URL     | Things service Auth gRPC URL                                  | localhost:8181        |
+| MF_THINGS_AUTH_GRPC_TIMEOUT | Things service Auth gRPC request timeout in seconds           | 1s                    |

 ## Deployment

@@ -39,7 +39,7 @@ make http
 make install

 # set the environment variables and run the service
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_HTTP_ADAPTER_LOG_LEVEL=[HTTP Adapter Log Level] \
 MF_HTTP_ADAPTER_PORT=[Service HTTP port] \
 MF_HTTP_ADAPTER_CA_CERTS=[Path to trusted CAs in PEM format] \
@@ -17,3 +17,7 @@ func NewPublisher() messaging.Publisher {
 func (pub mockPublisher) Publish(topic string, msg messaging.Message) error {
 	return nil
 }
+
+func (pub mockPublisher) Close() error {
+	return nil
+}
@@ -15,7 +15,7 @@ default values.
 |----------------------------------|---------------------------------------|---------------------------------|
 | MF_LORA_ADAPTER_HTTP_PORT        | Service HTTP port                     | 8180                            |
 | MF_LORA_ADAPTER_LOG_LEVEL        | Service Log level                     | error                           |
-| MF_NATS_URL                      | NATS instance URL                     | nats://localhost:4222           |
+| MF_BROKER_URL                    | Message broker instance URL           | nats://localhost:4222           |
 | MF_LORA_ADAPTER_MESSAGES_URL     | LoRa adapter MQTT broker URL          | tcp://localhost:1883            |
 | MF_LORA_ADAPTER_MESSAGES_TOPIC   | LoRa adapter MQTT subscriber Topic    | application/+/device/+/event/up |
 | MF_LORA_ADAPTER_MESSAGES_USER    | LoRa adapter MQTT subscriber Username |                                 |
@@ -50,7 +50,7 @@ make install

 # set the environment variables and run the service
 MF_LORA_ADAPTER_LOG_LEVEL=[Lora Adapter Log Level] \
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_LORA_ADAPTER_MESSAGES_URL=[LoRa adapter MQTT broker URL] \
 MF_LORA_ADAPTER_MESSAGES_TOPIC=[LoRa adapter MQTT subscriber Topic] \
 MF_LORA_ADAPTER_MESSAGES_USER=[LoRa adapter MQTT subscriber Username] \
@@ -54,7 +54,7 @@ type Service interface {
 	// DisconnectThing removes thingID:channelID route-map
 	DisconnectThing(ctx context.Context, chanID, thingID string) error

-	// Publish forwards messages from the LoRa MQTT broker to Mainflux NATS broker
+	// Publish forwards messages from the LoRa MQTT broker to Mainflux Message Broker
 	Publish(ctx context.Context, msg Message) error
 }

@@ -77,7 +77,7 @@ func New(publisher messaging.Publisher, thingsRM, channelsRM, connectRM RouteMap
 	}
 }

-// Publish forwards messages from Lora MQTT broker to Mainflux NATS broker
+// Publish forwards messages from Lora MQTT broker to Mainflux Message broker
 func (as *adapterService) Publish(ctx context.Context, m Message) error {
 	// Get route map of lora application
 	thingID, err := as.thingsRM.Get(ctx, m.DevEUI)
@@ -113,7 +113,7 @@ func (as *adapterService) Publish(ctx context.Context, m Message) error {
 		payload = []byte(jo)
 	}

-	// Publish on Mainflux NATS broker
+	// Publish on Mainflux Message broker
 	msg := messaging.Message{
 		Publisher: thingID,
 		Protocol:  protocol,
@@ -17,3 +17,7 @@ func NewPublisher() messaging.Publisher {
 func (pub mockPublisher) Publish(topic string, msg messaging.Message) error {
 	return nil
 }
+
+func (pub mockPublisher) Close() error {
+	return nil
+}
@@ -10,31 +10,31 @@ The service is configured using the environment variables presented in the
 following table. Note that any unset variables will be replaced with their
 default values.

-| Variable                                 | Description                                            | Default               |
-|------------------------------------------|--------------------------------------------------------|-----------------------|
-| MF_MQTT_ADAPTER_LOG_LEVEL                | mProxy Log level                                       | error                 |
-| MF_MQTT_ADAPTER_MQTT_PORT                | mProxy port                                            | 1883                  |
-| MF_MQTT_ADAPTER_MQTT_TARGET_HOST         | MQTT broker host                                       | 0.0.0.0               |
-| MF_MQTT_ADAPTER_MQTT_TARGET_PORT         | MQTT broker port                                       | 1883                  |
-| MF_MQTT_ADAPTER_MQTT_TARGET_HEALTH_CHECK | URL of broker health check                             | ""                    |
-| MF_MQTT_ADAPTER_WS_PORT                  | mProxy MQTT over WS port                               | 8080                  |
-| MF_MQTT_ADAPTER_WS_TARGET_HOST           | MQTT broker host for MQTT over WS                      | localhost             |
-| MF_MQTT_ADAPTER_WS_TARGET_PORT           | MQTT broker port for MQTT over WS                      | 8080                  |
-| MF_MQTT_ADAPTER_WS_TARGET_PATH           | MQTT broker MQTT over WS path                          | /mqtt                 |
-| MF_MQTT_ADAPTER_FORWARDER_TIMEOUT        | MQTT forwarder for multiprotocol communication timeout | 30s                   |
-| MF_NATS_URL                              | NATS broker URL                                        | nats://127.0.0.1:4222 |
-| MF_THINGS_AUTH_GRPC_URL                  | Things gRPC endpoint URL                               | localhost:8181        |
-| MF_THINGS_AUTH_GRPC_TIMEOUT              | Timeout in seconds for Things service gRPC calls       | 1s                    |
-| MF_JAEGER_URL                            | URL of Jaeger tracing service                          | ""                    |
-| MF_MQTT_ADAPTER_CLIENT_TLS               | gRPC client TLS                                        | false                 |
-| MF_MQTT_ADAPTER_CA_CERTS                 | CA certs for gRPC client TLS                           | ""                    |
-| MF_MQTT_ADAPTER_INSTANCE                 | Instance name for event sourcing                       | ""                    |
-| MF_MQTT_ADAPTER_ES_URL                   | Event sourcing URL                                     | localhost:6379        |
-| MF_MQTT_ADAPTER_ES_PASS                  | Event sourcing password                                | ""                    |
-| MF_MQTT_ADAPTER_ES_DB                    | Event sourcing database                                | "0"                   |
-| MF_AUTH_CACHE_URL                        | Auth cache URL                                         | localhost:6379        |
-| MF_AUTH_CACHE_PASS                       | Auth cache password                                    | ""                    |
-| MF_AUTH_CACHE_DB                         | Auth cache database                                    | "0"                   |
+| Variable                                 | Description                                                      | Default               |
+|------------------------------------------|------------------------------------------------------------------|-----------------------|
+| MF_MQTT_ADAPTER_LOG_LEVEL                | mProxy Log level                                                 | error                 |
+| MF_MQTT_ADAPTER_MQTT_PORT                | mProxy port                                                      | 1883                  |
+| MF_MQTT_ADAPTER_MQTT_TARGET_HOST         | MQTT broker host                                                 | 0.0.0.0               |
+| MF_MQTT_ADAPTER_MQTT_TARGET_PORT         | MQTT broker port                                                 | 1883                  |
+| MF_MQTT_ADAPTER_MQTT_TARGET_HEALTH_CHECK | URL of broker health check                                       | ""                    |
+| MF_MQTT_ADAPTER_WS_PORT                  | mProxy MQTT over WS port                                         | 8080                  |
+| MF_MQTT_ADAPTER_WS_TARGET_HOST           | MQTT broker host for MQTT over WS                                | localhost             |
+| MF_MQTT_ADAPTER_WS_TARGET_PORT           | MQTT broker port for MQTT over WS                                | 8080                  |
+| MF_MQTT_ADAPTER_WS_TARGET_PATH           | MQTT broker MQTT over WS path                                    | /mqtt                 |
+| MF_MQTT_ADAPTER_FORWARDER_TIMEOUT        | MQTT forwarder for multiprotocol communication timeout           | 30s                   |
+| MF_BROKER_URL                            | Message broker broker URL                                        | nats://127.0.0.1:4222 |
+| MF_THINGS_AUTH_GRPC_URL                  | Things gRPC endpoint URL                                         | localhost:8181        |
+| MF_THINGS_AUTH_GRPC_TIMEOUT              | Timeout in seconds for Things service gRPC calls                 | 1s                    |
+| MF_JAEGER_URL                            | URL of Jaeger tracing service                                    | ""                    |
+| MF_MQTT_ADAPTER_CLIENT_TLS               | gRPC client TLS                                                  | false                 |
+| MF_MQTT_ADAPTER_CA_CERTS                 | CA certs for gRPC client TLS                                     | ""                    |
+| MF_MQTT_ADAPTER_INSTANCE                 | Instance name for event sourcing                                 | ""                    |
+| MF_MQTT_ADAPTER_ES_URL                   | Event sourcing URL                                               | localhost:6379        |
+| MF_MQTT_ADAPTER_ES_PASS                  | Event sourcing password                                          | ""                    |
+| MF_MQTT_ADAPTER_ES_DB                    | Event sourcing database                                          | "0"                   |
+| MF_AUTH_CACHE_URL                        | Auth cache URL                                                   | localhost:6379        |
+| MF_AUTH_CACHE_PASS                       | Auth cache password                                              | ""                    |
+| MF_AUTH_CACHE_DB                         | Auth cache database                                              | "0"                   |

 ## Deployment

@@ -66,7 +66,7 @@ MF_MQTT_ADAPTER_WS_TARGET_HOST=[MQTT broker for MQTT over WS host] \
 MF_MQTT_ADAPTER_WS_TARGET_PORT=[MQTT broker for MQTT over WS port]] \
 MF_MQTT_ADAPTER_WS_TARGET_PATH=[MQTT adapter WS path] \
 MF_MQTT_ADAPTER_FORWARDER_TIMEOUT=[MQTT forwarder for multiprotocol support timeout] \
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_THINGS_AUTH_GRPC_URL=[Things service Auth gRPC URL] \
 MF_THINGS_AUTH_GRPC_TIMEOUT=[Things service Auth gRPC request timeout in seconds] \
 MF_JAEGER_URL=[Jaeger service URL] \
@@ -11,23 +11,23 @@ The service is configured using the environment variables presented in the
 following table. Note that any unset variables will be replaced with their
 default values.

-| Variable                         | Description                            | Default                    |
-|----------------------------------|----------------------------------------|----------------------------|
-| MF_OPCUA_ADAPTER_HTTP_PORT       | Service HTTP port                      | 8180                       |
-| MF_OPCUA_ADAPTER_LOG_LEVEL       | Service Log level                      | error                      |
-| MF_NATS_URL                      | NATS instance URL                      | nats://localhost:4222      |
-| MF_OPCUA_ADAPTER_INTERVAL_MS     | OPC-UA Server Interval in milliseconds | 1000                       |
-| MF_OPCUA_ADAPTER_POLICY          | OPC-UA Server Policy                   |                            |
-| MF_OPCUA_ADAPTER_MODE            | OPC-UA Server Mode                     |                            |
-| MF_OPCUA_ADAPTER_CERT_FILE       | OPC-UA Server Certificate file         |                            |
-| MF_OPCUA_ADAPTER_KEY_FILE        | OPC-UA Server Key file                 |                            |
-| MF_OPCUA_ADAPTER_ROUTE_MAP_URL   | Route-map database URL                 | localhost:6379             |
-| MF_OPCUA_ADAPTER_ROUTE_MAP_PASS  | Route-map database password            |                            |
-| MF_OPCUA_ADAPTER_ROUTE_MAP_DB    | Route-map instance name                | 0                          |
-| MF_THINGS_ES_URL                 | Things service event source URL        | localhost:6379             |
-| MF_THINGS_ES_PASS                | Things service event source password   |                            |
-| MF_THINGS_ES_DB                  | Things service event source DB         | 0                          |
-| MF_OPCUA_ADAPTER_EVENT_CONSUMER  | Service event consumer name            | opcua                      |
+| Variable                         | Description                                      | Default                    |
+|----------------------------------|--------------------------------------------------|----------------------------|
+| MF_OPCUA_ADAPTER_HTTP_PORT       | Service HTTP port                                | 8180                       |
+| MF_OPCUA_ADAPTER_LOG_LEVEL       | Service Log level                                | error                      |
+| MF_BROKER_URL                    | Message broker instance URL                      | nats://localhost:4222      |
+| MF_OPCUA_ADAPTER_INTERVAL_MS     | OPC-UA Server Interval in milliseconds           | 1000                       |
+| MF_OPCUA_ADAPTER_POLICY          | OPC-UA Server Policy                             |                            |
+| MF_OPCUA_ADAPTER_MODE            | OPC-UA Server Mode                               |                            |
+| MF_OPCUA_ADAPTER_CERT_FILE       | OPC-UA Server Certificate file                   |                            |
+| MF_OPCUA_ADAPTER_KEY_FILE        | OPC-UA Server Key file                           |                            |
+| MF_OPCUA_ADAPTER_ROUTE_MAP_URL   | Route-map database URL                           | localhost:6379             |
+| MF_OPCUA_ADAPTER_ROUTE_MAP_PASS  | Route-map database password                      |                            |
+| MF_OPCUA_ADAPTER_ROUTE_MAP_DB    | Route-map instance name                          | 0                          |
+| MF_THINGS_ES_URL                 | Things service event source URL                  | localhost:6379             |
+| MF_THINGS_ES_PASS                | Things service event source password             |                            |
+| MF_THINGS_ES_DB                  | Things service event source DB                   | 0                          |
+| MF_OPCUA_ADAPTER_EVENT_CONSUMER  | Service event consumer name                      | opcua                      |

 ## Deployment

@@ -51,7 +51,7 @@ make install
 # set the environment variables and run the service
 MF_OPCUA_ADAPTER_HTTP_PORT=[Service HTTP port] \
 MF_OPCUA_ADAPTER_LOG_LEVEL=[OPC-UA Adapter Log Level] \
-MF_NATS_URL=[NATS instance URL] \
+MF_BROKER_URL=[Message broker instance URL] \
 MF_OPCUA_ADAPTER_INTERVAL_MS: [OPC-UA Server Interval (milliseconds)] \
 MF_OPCUA_ADAPTER_POLICY=[OPC-UA Server Policy] \
 MF_OPCUA_ADAPTER_MODE=[OPC-UA Server Mode] \
@@ -203,7 +203,7 @@ func (c client) runHandler(ctx context.Context, sub *opcuaGopcua.Subscription, u
 	}
 }

-// Publish forwards messages from the OPC-UA Server to Mainflux NATS broker
+// Publish forwards messages from the OPC-UA Server to Mainflux Message broker
 func (c client) publish(ctx context.Context, token string, m message) error {
 	// Get route-map of the OPC-UA ServerURI
 	chanID, err := c.channelsRM.Get(ctx, m.ServerURI)
@@ -223,7 +223,7 @@ func (c client) publish(ctx context.Context, token string, m message) error {
 		return fmt.Errorf("%s between channel %s and thing %s", errNotFoundConn, chanID, thingID)
 	}

-	// Publish on Mainflux NATS broker
+	// Publish on Mainflux Message broker
 	SenML := fmt.Sprintf(`[{"n":"%s", "t": %d, "%s":%v}]`, m.Type, m.Time, m.DataKey, m.Data)
 	payload := []byte(SenML)

@@ -2,8 +2,8 @@

 `messaging` package defines `Publisher`, `Subscriber` and an aggregate `Pubsub` interface. 

-`Subscriber` interface defines methods used to subscribe to a message broker such as MQTT or NATS. 
+`Subscriber` interface defines methods used to subscribe to a message broker such as MQTT or NATS or RabbitMQ. 

-`Publisher` interface defines methods used to publish messages to a message broker such as MQTT or NATS.
+`Publisher` interface defines methods used to publish messages to a message broker such as MQTT or NATS or RabbitMQ.

 `Pubsub` interface is composed of `Publisher` and `Subscriber` interface and can be used to send messages to as well as to receive messages from a message broker.
@@ -0,0 +1,39 @@
+//go:build !rabbitmq
+// +build !rabbitmq
+
+// Copyright (c) Mainflux
+// SPDX-License-Identifier: Apache-2.0
+
+package brokers
+
+import (
+	"log"
+
+	"github.com/mainflux/mainflux/logger"
+	"github.com/mainflux/mainflux/pkg/messaging"
+	"github.com/mainflux/mainflux/pkg/messaging/nats"
+)
+
+// SubjectAllChannels represents subject to subscribe for all the channels.
+const SubjectAllChannels = "channels.>"
+
+func init() {
+	log.Println("The binary was build using Nats as the message broker")
+}
+
+func NewPublisher(url string) (messaging.Publisher, error) {
+	pb, err := nats.NewPublisher(url)
+	if err != nil {
+		return nil, err
+	}
+	return pb, nil
+
+}
+
+func NewPubSub(url, queue string, logger logger.Logger) (messaging.PubSub, error) {
+	pb, err := nats.NewPubSub(url, queue, logger)
+	if err != nil {
+		return nil, err
+	}
+	return pb, nil
+}
@@ -0,0 +1,38 @@
+//go:build rabbitmq
+// +build rabbitmq
+
+// Copyright (c) Mainflux
+// SPDX-License-Identifier: Apache-2.0
+
+package brokers
+
+import (
+	"log"
+	
+	"github.com/mainflux/mainflux/logger"
+	"github.com/mainflux/mainflux/pkg/messaging"
+	"github.com/mainflux/mainflux/pkg/messaging/rabbitmq"
+)
+
+// SubjectAllChannels represents subject to subscribe for all the channels.
+const SubjectAllChannels = "channels.>"
+
+func init() {
+	log.Println("The binary was build using RabbitMQ as the message broker")
+}
+
+func NewPublisher(url string) (messaging.Publisher, error) {
+	pb, err := rabbitmq.NewPublisher(url)
+	if err != nil {
+		return nil, err
+	}
+	return pb, nil
+}
+
+func NewPubSub(url, queue string, logger logger.Logger) (messaging.PubSub, error) {
+	pb, err := rabbitmq.NewPubSub(url, queue, logger)
+	if err != nil {
+		return nil, err
+	}
+	return pb, nil
+}
@@ -23,7 +23,7 @@ type publisher struct {

 // NewPublisher returns a new MQTT message publisher.
 func NewPublisher(address string, timeout time.Duration) (messaging.Publisher, error) {
-	client, err := newClient(address, timeout)
+	client, err := newClient(address, "mqtt-publisher", timeout)
 	if err != nil {
 		return nil, err
 	}
@@ -47,3 +47,8 @@ func (pub publisher) Publish(topic string, msg messaging.Message) error {

 	return token.Error()
 }
+
+func (pub publisher) Close() error {
+	pub.client.Disconnect(uint(pub.timeout))
+	return nil
+}
@@ -5,9 +5,14 @@ package mqtt

 import (
 	"errors"
+	"fmt"
+	"sync"
 	"time"

 	mqtt "github.com/eclipse/paho.mqtt.golang"
+	"github.com/gogo/protobuf/proto"
+	log "github.com/mainflux/mainflux/logger"
+	"github.com/mainflux/mainflux/pkg/messaging"
 )

 const (
@@ -15,12 +20,142 @@ const (
 	qos      = 2
 )

-var errConnect = errors.New("failed to connect to MQTT broker")
+var (
+	errConnect                = errors.New("failed to connect to MQTT broker")
+	errSubscribeTimeout       = errors.New("failed to subscribe due to timeout reached")
+	errUnsubscribeTimeout     = errors.New("failed to unsubscribe due to timeout reached")
+	errUnsubscribeDeleteTopic = errors.New("failed to unsubscribe due to deletion of topic")
+	errAlreadySubscribed      = errors.New("already subscribed to topic")
+	errNotSubscribed          = errors.New("not subscribed")
+	errEmptyTopic             = errors.New("empty topic")
+	errEmptyID                = errors.New("empty ID")
+)

-func newClient(address string, timeout time.Duration) (mqtt.Client, error) {
-	opts := mqtt.NewClientOptions().
-		SetUsername(username).
-		AddBroker(address)
+var _ messaging.PubSub = (*pubsub)(nil)
+
+type subscription struct {
+	client mqtt.Client
+	topics []string
+}
+
+type pubsub struct {
+	publisher
+	logger        log.Logger
+	mu            *sync.RWMutex
+	address       string
+	timeout       time.Duration
+	subscriptions map[string]subscription
+}
+
+func NewPubSub(url, queue string, timeout time.Duration, logger log.Logger) (messaging.PubSub, error) {
+	client, err := newClient(url, "mqtt-publisher", timeout)
+	if err != nil {
+		return nil, err
+	}
+	ret := pubsub{
+		publisher: publisher{
+			client:  client,
+			timeout: timeout,
+		},
+		address:       url,
+		timeout:       timeout,
+		logger:        logger,
+		subscriptions: make(map[string]subscription),
+	}
+	return ret, nil
+}
+
+func (ps pubsub) Subscribe(id, topic string, handler messaging.MessageHandler) error {
+	if id == "" {
+		return errEmptyID
+	}
+	if topic == "" {
+		return errEmptyTopic
+	}
+	ps.mu.Lock()
+	defer ps.mu.Unlock()
+	// Check client ID
+	s, ok := ps.subscriptions[id]
+	switch ok {
+	case true:
+		// Check topic
+		if ok = s.contains(topic); ok {
+			return errAlreadySubscribed
+		}
+		s.topics = append(s.topics, topic)
+	default:
+		client, err := newClient(ps.address, id, ps.timeout)
+		if err != nil {
+			return err
+		}
+		s = subscription{
+			client: client,
+			topics: []string{topic},
+		}
+	}
+	token := s.client.Subscribe(topic, qos, ps.mqttHandler(handler))
+	if token.Error() != nil {
+		return token.Error()
+	}
+	if ok := token.WaitTimeout(ps.timeout); !ok {
+		return errSubscribeTimeout
+	}
+	return token.Error()
+}
+
+func (ps pubsub) Unsubscribe(id, topic string) error {
+	if id == "" {
+		return errEmptyID
+	}
+	if topic == "" {
+		return errEmptyTopic
+	}
+	ps.mu.Lock()
+	defer ps.mu.Unlock()
+	// Check client ID
+	s, ok := ps.subscriptions[id]
+	switch ok {
+	case true:
+		// Check topic
+		if ok := s.contains(topic); !ok {
+			return errNotSubscribed
+		}
+	default:
+		return errNotSubscribed
+	}
+	token := s.client.Unsubscribe(topic)
+	if token.Error() != nil {
+		return token.Error()
+	}
+
+	ok = token.WaitTimeout(ps.timeout)
+	if !ok {
+		return errUnsubscribeTimeout
+	}
+	if ok := s.delete(topic); !ok {
+		return errUnsubscribeDeleteTopic
+	}
+	if len(s.topics) == 0 {
+		delete(ps.subscriptions, id)
+	}
+	return token.Error()
+}
+
+func (ps pubsub) mqttHandler(h messaging.MessageHandler) mqtt.MessageHandler {
+	return func(c mqtt.Client, m mqtt.Message) {
+		var msg messaging.Message
+		if err := proto.Unmarshal(m.Payload(), &msg); err != nil {
+			ps.logger.Warn(fmt.Sprintf("Failed to unmarshal received message: %s", err))
+			return
+		}
+		if err := h.Handle(msg); err != nil {
+			ps.logger.Warn(fmt.Sprintf("Failed to handle Mainflux message: %s", err))
+		}
+	}
+}
+
+func newClient(address, id string, timeout time.Duration) (mqtt.Client, error) {
+	opts := mqtt.NewClientOptions().SetUsername(username).AddBroker(address).SetClientID(id)
 	client := mqtt.NewClient(opts)
 	token := client.Connect()
 	if token.Error() != nil {
@@ -38,3 +173,31 @@ func newClient(address string, timeout time.Duration) (mqtt.Client, error) {

 	return client, nil
 }
+
+// contains checks if a topic is present
+func (sub subscription) contains(topic string) bool {
+	return sub.indexOf(topic) != -1
+}
+
+// Finds the index of an item in the topics
+func (sub subscription) indexOf(element string) int {
+	for k, v := range sub.topics {
+		if element == v {
+			return k
+		}
+	}
+	return -1
+}
+
+// Deletes a topic from the slice
+func (sub subscription) delete(topic string) bool {
+	index := sub.indexOf(topic)
+	if index == -1 {
+		return false
+	}
+	topics := make([]string, len(sub.topics)-1)
+	copy(topics[:index], sub.topics[:index])
+	copy(topics[index:], sub.topics[index+1:])
+	sub.topics = topics
+	return true
+}
@@ -1,172 +0,0 @@
-// Copyright (c) Mainflux
-// SPDX-License-Identifier: Apache-2.0
-
-package mqtt
-
-import (
-	"fmt"
-	"sync"
-	"time"
-
-	mqtt "github.com/eclipse/paho.mqtt.golang"
-	"github.com/gogo/protobuf/proto"
-
-	log "github.com/mainflux/mainflux/logger"
-	"github.com/mainflux/mainflux/pkg/errors"
-	"github.com/mainflux/mainflux/pkg/messaging"
-)
-
-var (
-	errSubscribeTimeout       = errors.New("failed to subscribe due to timeout reached")
-	errUnsubscribeTimeout     = errors.New("failed to unsubscribe due to timeout reached")
-	errUnsubscribeDeleteTopic = errors.New("failed to unsubscribe due to deletion of topic")
-	errAlreadySubscribed      = errors.New("already subscribed to topic")
-	errNotSubscribed          = errors.New("not subscribed")
-	errEmptyTopic             = errors.New("empty topic")
-	errEmptyID                = errors.New("empty ID")
-)
-
-var _ messaging.Subscriber = (*subscriber)(nil)
-
-type subscription struct {
-	client mqtt.Client
-	topics []string
-}
-
-type subscriber struct {
-	address       string
-	timeout       time.Duration
-	logger        log.Logger
-	subscriptions map[string]subscription
-	mu            *sync.RWMutex
-}
-
-// NewSubscriber returns a new MQTT message subscriber.
-func NewSubscriber(address string, timeout time.Duration, logger log.Logger) (messaging.Subscriber, error) {
-	ret := subscriber{
-		address:       address,
-		timeout:       timeout,
-		logger:        logger,
-		subscriptions: make(map[string]subscription),
-	}
-	return ret, nil
-}
-
-func (sub subscriber) Subscribe(id, topic string, handler messaging.MessageHandler) error {
-	if id == "" {
-		return errEmptyID
-	}
-	if topic == "" {
-		return errEmptyTopic
-	}
-	sub.mu.Lock()
-	defer sub.mu.Unlock()
-	// Check client ID
-	s, ok := sub.subscriptions[id]
-	switch ok {
-	case true:
-		// Check topic
-		if ok = s.contains(topic); ok {
-			return errAlreadySubscribed
-		}
-		s.topics = append(s.topics, topic)
-	default:
-		opts := mqtt.NewClientOptions().SetUsername(username).AddBroker(sub.address).SetClientID(id)
-		client := mqtt.NewClient(opts)
-		token := client.Connect()
-		if token.Error() != nil {
-			return token.Error()
-		}
-		s = subscription{
-			client: client,
-			topics: []string{topic},
-		}
-	}
-	token := s.client.Subscribe(topic, qos, sub.mqttHandler(handler))
-	if token.Error() != nil {
-		return token.Error()
-	}
-	if ok := token.WaitTimeout(sub.timeout); !ok {
-		return errSubscribeTimeout
-	}
-	return token.Error()
-}
-
-func (sub subscriber) Unsubscribe(id, topic string) error {
-	if id == "" {
-		return errEmptyID
-	}
-	if topic == "" {
-		return errEmptyTopic
-	}
-	sub.mu.Lock()
-	defer sub.mu.Unlock()
-	// Check client ID
-	s, ok := sub.subscriptions[id]
-	switch ok {
-	case true:
-		// Check topic
-		if ok := s.contains(topic); !ok {
-			return errNotSubscribed
-		}
-	default:
-		return errNotSubscribed
-	}
-	token := s.client.Unsubscribe(topic)
-	if token.Error() != nil {
-		return token.Error()
-	}
-
-	ok = token.WaitTimeout(sub.timeout)
-	if !ok {
-		return errUnsubscribeTimeout
-	}
-	if ok := s.delete(topic); !ok {
-		return errUnsubscribeDeleteTopic
-	}
-	if len(s.topics) == 0 {
-		delete(sub.subscriptions, id)
-	}
-	return token.Error()
-}
-
-func (sub subscriber) mqttHandler(h messaging.MessageHandler) mqtt.MessageHandler {
-	return func(c mqtt.Client, m mqtt.Message) {
-		var msg messaging.Message
-		if err := proto.Unmarshal(m.Payload(), &msg); err != nil {
-			sub.logger.Warn(fmt.Sprintf("Failed to unmarshal received message: %s", err))
-			return
-		}
-		if err := h.Handle(msg); err != nil {
-			sub.logger.Warn(fmt.Sprintf("Failed to handle Mainflux message: %s", err))
-		}
-	}
-}
-
-// contains checks if a topic is present
-func (sub subscription) contains(topic string) bool {
-	return sub.indexOf(topic) != -1
-}
-
-// Finds the index of an item in the topics
-func (sub subscription) indexOf(element string) int {
-	for k, v := range sub.topics {
-		if element == v {
-			return k
-		}
-	}
-	return -1
-}
-
-// Deletes a topic from the slice
-func (sub subscription) delete(topic string) bool {
-	index := sub.indexOf(topic)
-	if index == -1 {
-		return false
-	}
-	topics := make([]string, len(sub.topics)-1)
-	copy(topics[:index], sub.topics[:index])
-	copy(topics[index:], sub.topics[index+1:])
-	sub.topics = topics
-	return true
-}
@@ -19,13 +19,9 @@ type publisher struct {

 // Publisher wraps messaging Publisher exposing
 // Close() method for NATS connection.
-type Publisher interface {
-	messaging.Publisher
-	Close()
-}

 // NewPublisher returns NATS message Publisher.
-func NewPublisher(url string) (Publisher, error) {
+func NewPublisher(url string) (messaging.Publisher, error) {
 	conn, err := broker.Connect(url)
 	if err != nil {
 		return nil, err
@@ -56,6 +52,7 @@ func (pub *publisher) Publish(topic string, msg messaging.Message) error {
 	return nil
 }

-func (pub *publisher) Close() {
+func (pub *publisher) Close() error {
 	pub.conn.Close()
+	return nil
 }
@@ -17,9 +17,6 @@ import (

 const chansPrefix = "channels"

-// SubjectAllChannels represents subject to subscribe for all the channels.
-const SubjectAllChannels = "channels.>"
-
 var (
 	ErrAlreadySubscribed = errors.New("already subscribed to topic")
 	ErrNotSubscribed     = errors.New("not subscribed")
@@ -29,13 +26,6 @@ var (

 var _ messaging.PubSub = (*pubsub)(nil)

-// PubSub wraps messaging Publisher exposing
-// Close() method for NATS connection.
-type PubSub interface {
-	messaging.PubSub
-	Close()
-}
-
 type subscription struct {
 	*broker.Subscription
 	cancel func() error
@@ -56,7 +46,7 @@ type pubsub struct {
 // from ordinary subscribe. For more information, please take a look
 // here: https://docs.nats.io/developing-with-nats/receiving/queues.
 // If the queue is empty, Subscribe will be used.
-func NewPubSub(url, queue string, logger log.Logger) (PubSub, error) {
+func NewPubSub(url, queue string, logger log.Logger) (messaging.PubSub, error) {
 	conn, err := broker.Connect(url)
 	if err != nil {
 		return nil, err
@@ -7,6 +7,9 @@ package messaging
 type Publisher interface {
 	// Publishes message to the stream.
 	Publish(topic string, msg Message) error
+
+	// Close gracefully closes message publisher's connection.
+	Close() error
 }

 // MessageHandler represents Message handler for Subscriber.
@@ -26,6 +29,9 @@ type Subscriber interface {
 	// Unsubscribe unsubscribes from the message stream and
 	// stops consuming messages.
 	Unsubscribe(id, topic string) error
+
+	// Close gracefully closes message subscriber's connection.
+	Close() error
 }

 // PubSub  represents aggregation interface for publisher and subscriber.
@@ -18,17 +18,9 @@ type publisher struct {
 	ch   *amqp.Channel
 }

-// Publisher wraps messaging Publisher exposing
-// Close() method for RabbitMQ connection.
-type Publisher interface {
-	messaging.Publisher
-	Close()
-}
-
 // NewPublisher returns RabbitMQ message Publisher.
-func NewPublisher(url string) (Publisher, error) {
-	endpoint := fmt.Sprintf("amqp://%s", url)
-	conn, err := amqp.Dial(endpoint)
+func NewPublisher(url string) (messaging.Publisher, error) {
+	conn, err := amqp.Dial(url)
 	if err != nil {
 		return nil, err
 	}
@@ -55,7 +47,6 @@ func (pub *publisher) Publish(topic string, msg messaging.Message) error {
 	if err != nil {
 		return err
 	}
-
 	subject := fmt.Sprintf("%s.%s", chansPrefix, topic)
 	if msg.Subtopic != "" {
 		subject = fmt.Sprintf("%s.%s", subject, msg.Subtopic)
@@ -79,6 +70,6 @@ func (pub *publisher) Publish(topic string, msg messaging.Message) error {
 	return nil
 }

-func (pub *publisher) Close() {
-	pub.conn.Close()
+func (pub *publisher) Close() error {
+	return pub.conn.Close()
 }
@@ -30,13 +30,6 @@ var (

 var _ messaging.PubSub = (*pubsub)(nil)

-// PubSub wraps messaging Publisher exposing
-// Close() method for RabbitMQ connection.
-type PubSub interface {
-	messaging.PubSub
-	Close()
-}
-
 type subscription struct {
 	cancel func() error
 }
@@ -48,9 +41,8 @@ type pubsub struct {
 }

 // NewPubSub returns RabbitMQ message publisher/subscriber.
-func NewPubSub(url, queue string, logger log.Logger) (PubSub, error) {
-	endpoint := fmt.Sprintf("amqp://%s", url)
-	conn, err := amqp.Dial(endpoint)
+func NewPubSub(url, queue string, logger log.Logger) (messaging.PubSub, error) {
+	conn, err := amqp.Dial(url)
 	if err != nil {
 		return nil, err
 	}
@@ -28,13 +28,13 @@ func TestMain(m *testing.M) {
 		log.Fatalf("Could not connect to docker: %s", err)
 	}

-	container, err := pool.Run("rabbitmq", "3.9.10", []string{})
+	container, err := pool.Run("rabbitmq", "3.9.20", []string{})
 	if err != nil {
 		log.Fatalf("Could not start container: %s", err)
 	}
 	handleInterrupt(pool, container)

-	address := fmt.Sprintf("%s:%s", "localhost", container.GetPort("5672/tcp"))
+	address := fmt.Sprintf("amqp://%s:%s", "localhost", container.GetPort("5672/tcp"))
 	if err := pool.Retry(func() error {
 		publisher, err = rabbitmq.NewPublisher(address)
 		return err
@@ -64,6 +64,8 @@ setup_mf() {
            exit 1
        fi
    done
+    echo "Compile check for rabbitmq..."
+    MF_BROKER_TYPE=rabbitmq make http
    make -j$NPROC
 }

@@ -22,12 +22,12 @@ default values.
 | MF_TWINS_DB                | Database name                                                        | mainflux              |
 | MF_TWINS_DB_HOST           | Database host address                                                | localhost             |
 | MF_TWINS_DB_PORT           | Database host port                                                   | 27017                 |
-| MF_THINGS_STANDALONE_EMAIL | User email for standalone mode (no gRPC communication with users)       |                |
-| MF_THINGS_STANDALONE_TOKEN | User token for standalone mode that should be passed in auth header     |                |
+| MF_THINGS_STANDALONE_EMAIL | User email for standalone mode (no gRPC communication with users)    |                       |
+| MF_THINGS_STANDALONE_TOKEN | User token for standalone mode that should be passed in auth header  |                       |
 | MF_TWINS_CLIENT_TLS        | Flag that indicates if TLS should be turned on                       | false                 |
 | MF_TWINS_CA_CERTS          | Path to trusted CAs in PEM format                                    |                       |
-| MF_TWINS_CHANNEL_ID        | NATS notifications channel ID                                        |                       |
-| MF_NATS_URL                | Mainflux NATS broker URL                                             | nats://localhost:4222 |
+| MF_TWINS_CHANNEL_ID        | Message broker notifications channel ID                              |                       |
+| MF_BROKER_URL              | Mainflux Message broker URL                                          | nats://localhost:4222 |
 | MF_AUTH_GRPC_URL           | Auth service gRPC URL                                                | localhost:8181        |
 | MF_AUTH_GRPC_TIMEOUT       | Auth service gRPC request timeout in seconds                         | 1s                    |
 | MF_TWINS_CACHE_URL         | Cache database URL                                                   | localhost:6379        |
@@ -67,8 +67,8 @@ MF_THINGS_STANDALONE_EMAIL=[User email for standalone mode (no gRPC communicatio
 MF_THINGS_STANDALONE_TOKEN=[User token for standalone mode that should be passed in auth header] \
 MF_TWINS_CLIENT_TLS: [Flag that indicates if TLS should be turned on] \
 MF_TWINS_CA_CERTS: [Path to trusted CAs in PEM format] \
-MF_TWINS_CHANNEL_ID: [NATS notifications channel ID] \
-MF_NATS_URL: [Mainflux NATS broker URL] \
+MF_TWINS_CHANNEL_ID: [Message broker notifications channel ID] \
+MF_BROKER_URL: [Mainflux Message broker URL] \
 MF_AUTH_GRPC_URL: [Auth service gRPC URL] \
 MF_AUTH_GRPC_TIMEOUT: [Auth service gRPC request timeout in seconds] \
 $GOBIN/mainflux-twins
@@ -78,7 +78,7 @@ $GOBIN/mainflux-twins

 ### Starting twins service

-The twins service publishes notifications on a NATS subject of the format
+The twins service publishes notifications on a Message broker subject of the format
 `channels.<MF_TWINS_CHANNEL_ID>.messages.<twinID>.<crudOp>`, where `crudOp`
 stands for the crud operation done on twin - create, update, delete or
 retrieve - or state - save state. In order to use twin service notifications,
@@ -27,3 +27,7 @@ func (mb mockBroker) Publish(topic string, msg messaging.Message) error {
 	}
 	return nil
 }
+
+func (mb mockBroker) Close() error {
+	return nil
+}
@@ -422,6 +422,6 @@ func (ts *twinsService) publish(twinID *string, err *error, succOp, failOp strin
 	}

 	if err := ts.publisher.Publish(msg.Channel, msg); err != nil {
-		ts.logger.Warn(fmt.Sprintf("Failed to publish notification on NATS: %s", err))
+		ts.logger.Warn(fmt.Sprintf("Failed to publish notification on Message Broker: %s", err))
 	}
 }