{"id":19656147,"url":"https://github.com/daggerok/yet-another-messaging-app","last_synced_at":"2026-05-10T23:40:09.036Z","repository":{"id":151042202,"uuid":"237702580","full_name":"daggerok/yet-another-messaging-app","owner":"daggerok","description":"Building reactive pipelines with spring cloud stream","archived":false,"fork":false,"pushed_at":"2020-02-02T05:34:04.000Z","size":68,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":3,"default_branch":"master","last_synced_at":"2025-01-10T00:37:28.511Z","etag":null,"topics":["fabric8-maven-plugin","rabbit","rabbitmq","rabbitmq-management","spring-cloud-function","spring-cloud-stream","spring-cloud-stream-binder-rabbit","spring-cloud-stream-rabbitmq","spring-cloud-stream-reactive"],"latest_commit_sha":null,"homepage":null,"language":"Java","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/daggerok.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2020-02-02T01:29:48.000Z","updated_at":"2020-02-02T05:34:06.000Z","dependencies_parsed_at":null,"dependency_job_id":"5eb9af3a-d9c4-419a-a381-7b71cb1903cb","html_url":"https://github.com/daggerok/yet-another-messaging-app","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/daggerok%2Fyet-another-messaging-app","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/daggerok%2Fyet-another-messaging-app/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/daggerok%2Fyet-another-messaging-app/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/daggerok%2Fyet-another-messaging-app/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/daggerok","download_url":"https://codeload.github.com/daggerok/yet-another-messaging-app/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":240964475,"owners_count":19885751,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["fabric8-maven-plugin","rabbit","rabbitmq","rabbitmq-management","spring-cloud-function","spring-cloud-stream","spring-cloud-stream-binder-rabbit","spring-cloud-stream-rabbitmq","spring-cloud-stream-reactive"],"created_at":"2024-11-11T15:26:37.339Z","updated_at":"2026-05-10T23:40:08.998Z","avatar_url":"https://github.com/daggerok.png","language":"Java","funding_links":[],"categories":[],"sub_categories":[],"readme":"# yet-another-messaging-app [![Build Status](https://travis-ci.org/daggerok/yet-another-messaging-app.svg?branch=master)](https://travis-ci.org/daggerok/yet-another-messaging-app)\nBuild reactive pipelines with spring cloud stream\n\n## how too\n\n### source\n#### create java bean\n```java\n@Log4j2\n@Configuration\nclass DeskAgent {\n\n    @Bean\n    Supplier\u003cFlux\u003cPassenger\u003e\u003e checkIn() {\n        Supplier\u003cPassenger\u003e randomPassenger = randomPassenger(names());\n        return () -\u003e Flux.interval(Duration.ofMillis(345))\n                         .onBackpressureDrop()\n                         .map(aLong -\u003e randomPassenger.get())\n                         .doOnNext(passenger -\u003e log.info(\"generated: {}\", passenger));\n    }\n}\n```\n### configure bindings\n```properties\nspring.cloud.stream.bindings.checkIn-out-0.destination=processorTransformingApp\n#spring.cloud.function.definition=checkIn\n```\n\n### processor\n#### create java bean\n```java\n@Log4j2\n@Configuration\nclass GateAgent {\n\n    @Bean\n    Function\u003cFlux\u003cPassenger\u003e, Flux\u003cFlyingPassenger\u003e\u003e transfer() {\n        ThreadLocalRandom random = ThreadLocalRandom.current();\n        Supplier\u003cStatus\u003e randomStatus = () -\u003e random.nextInt(5) == 0 ? Status.PREMIUM : Status.VALUED;\n        return flux -\u003e flux.map(passenger -\u003e new FlyingPassenger(passenger.getId(),\n                                                                 passenger.getName(),\n                                                                 randomStatus.get()))\n                           .doOnNext(passenger -\u003e log.info(\"transformed: {}\", passenger));\n    }\n}\n```\n### configure bindings\n```properties\nspring.cloud.stream.bindings.transfer-in-0.destination=processorTransformingApp\nspring.cloud.stream.bindings.transfer-in-0.group=processorTransformingApp\nspring.cloud.stream.bindings.transfer-out-0.destination=sinkInputApp\n#spring.cloud.function.definition=transfer\n```\n\n### sink\n#### create java bean\n```java\n@Log4j2\n@Configuration\nclass FlyAttendant {\n\n    @Bean\n    Consumer\u003cFlux\u003cFlyingPassenger\u003e\u003e attendee() {\n        return flux -\u003e flux.subscribe(passenger -\u003e log.info(\"received: {}\", passenger));\n    }\n}\n```\n### configure bindings\n```properties\nspring.cloud.stream.bindings.attendee-in-0.destination=sinkInputApp\nspring.cloud.stream.bindings.attendee-in-0.group=sinkInputApp\n#spring.cloud.function.definition=attendee\n```\n\n## build, run and test\n\n```bash\n./mvnw -f rabbitmq docker:build docker:start\n\n./mvnw\njava -jar ./source-output-app/target/*.jar \u0026\njava -jar ./processor-transforming-app/target/*.jar \u0026\njava -jar ./sink-input-app/target/*.jar \u0026\n\nsleep 15s\nkillall -9 java\n\n./mvnw -f rabbitmq docker:stop docker:remove\n```\n\n## resources\n* [spring-cloud-stream functional binding](https://cloud.spring.io/spring-cloud-static/spring-cloud-stream/current/reference/html/spring-cloud-stream.html#_functional_binding_names)\n* [spring-cloud-stream reactive functions support](https://github.com/spring-cloud/spring-cloud-stream/blob/master/docs/src/main/asciidoc/spring-cloud-stream.adoc#reactive-functions-support)\n* [Old example daggerok/spring-cloud-function-stream-integration](https://github.com/daggerok/spring-cloud-function-stream-integration)\n\u003c!--\n* [Official Apache Maven documentation](https://maven.apache.org/guides/index.html)\n* [Spring Boot Maven Plugin Reference Guide](https://docs.spring.io/spring-boot/docs/2.2.4.RELEASE/maven-plugin/)\n* [Spring Configuration Processor](https://docs.spring.io/spring-boot/docs/2.2.4.RELEASE/reference/htmlsingle/#configuration-metadata-annotation-processor)\n* [Spring for RabbitMQ](https://docs.spring.io/spring-boot/docs/2.2.4.RELEASE/reference/htmlsingle/#boot-features-amqp)\n* [Messaging with RabbitMQ](https://spring.io/guides/gs/messaging-rabbitmq/)\n--\u003e\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdaggerok%2Fyet-another-messaging-app","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdaggerok%2Fyet-another-messaging-app","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdaggerok%2Fyet-another-messaging-app/lists"}