Vertx - Reactive & Distributed
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During past years, the requirements for modern applications have increased from gigabytes of data to terabytes, from thousands of requests per second to millions, from seconds of response time to milliseconds, and this list can be continued. Until now, most of these problems have been solved using the microservices architecture, but what's next? What next approach should we apply where microservices fail? In this talk, we will overview modern approaches to application development with reactive and distributed architecture and see how Vert.x help to implement such solutions.
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Vertx - Reactive & Distributed
- 2. Orkhan Gasimov Digital Transformation Architect @ GlobalLogic 15 years of software engineering; training & mentorship; author of trainings about: Microservices; Spring Cloud; Akka; 2Speaker
- 5. Why Vert.x is Reactive? 5Agenda
- 6. How Vert.x is Distributed? 6Agenda
- 11. 11 Enterprise Evolution App Server 1 Module Module Module Module App Server N Module Module Module Module …
- 12. 12 Enterprise Evolution App Server 1 Module Module Module Module App Server N Module Module Module Module Admin Server Deployment & Configuration
- 13. 13 Enterprise Evolution Module Module Module Module Module Module Module Module Admin Server Deployment & Configuration
- 14. 14 Enterprise Evolution Admin Server Deployment & Configuration App App App App App App App App
- 16. 16 Enterprise Evolution App App App App App App App App App App App App App App App App App App App App Discovery & Configuration Microservices
- 17. 17 Enterprise Evolution App App App App App App App App App App App App App App App App App App App App Server Discovery & Configuration Microservices
- 18. 18 Enterprise Evolution App App App App App App App App App App App App App App App App App App App App Server Modules Discovery & Configuration Microservices
- 19. 19 Enterprise Evolution App App App App App App App App App App App App App App App App App App App App Server Modules JDBC Discovery & Configuration Microservices
- 20. 20 Enterprise Evolution App App App App App App App App App App App App App App App App App App App App Server Modules JDBC ? Discovery & Configuration Microservices
- 21. 21 Enterprise Evolution App App App App App App App App App App App App App App App App App App App App Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Discovery & Configuration Microservices
- 22. 22 Enterprise Evolution App App App App App App App App App App App App App App App App App App App App Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Server Modules JDBC ? Discovery & Configuration Microservices
- 24. 24 Enterprise Evolution App App App App App App App App Microservices Microservices Discovery & Configuration
- 26. 26 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application
- 27. 27 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC
- 28. 28 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client
- 29. 29 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC
- 30. 30 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ?
- 31. 31 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ?
- 32. 32 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP
- 33. 33 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP? ?
- 34. 34 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP? ? Event Bus
- 35. 35 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP? ? Event Bus
- 36. 36 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP? ? Event Bus External Apps
- 37. 37 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP? ? Event Bus External Apps IoT
- 38. 38 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP? ? Event Bus External Apps Cloud IoT
- 39. 39 Enterprise Evolution Module Module Module Module Module Module Module Module Discovery & Configuration MicroservicesMicroservices Distributed Application JDBC Client JDBC ? ? ? HTTP? ? Event Bus External Apps Polyglot Cloud IoT
- 45. 45Toolkit
- 46. 46Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 47. 47Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 48. 48Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 49. 49Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 50. 50Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 51. 51Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 52. 52Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 53. 53Java Example Vertx vertx = Vertx.vertx(); Router router = Router.router(vertx); JsonObject mySQLClientConfig = new JsonObject().put("host", "localhost").put("database", "test"); SQLClient sqlClient = MySQLClient.createShared(vertx, mySQLClientConfig); router.get("/hello/:name").produces("text/plain").handler(routingContext -> { String name = routingContext.pathParam("name"); HttpServerResponse response = routingContext.response(); sqlClient.updateWithParams("INSERT INTO names (name) VALUES (?)", new JsonArray().add(name), event -> { if (event.succeeded()) { response.end("Hello " + name); } else { System.out.println("Could not INSERT to database with cause: " + event.cause()); response.setStatusCode(500); response.end(); } }); }); HttpServer server = vertx.createHttpServer(); server.requestHandler(router::accept).listen(8080);
- 54. Reactor Pattern 54Vert.x Core Event Loop (single thread, non blocking)
- 55. Reactor Pattern 55Vert.x Core Event Loop (single thread, non blocking) Worker Worker Worker delegate long running jobs & IO callback
- 56. Multi-Reactor 56Vert.x Core Worker Worker Worker delegate long running jobs & IO callback Event Loops
- 57. Event Bus 57Vert.x Core Worker Worker Worker delegate long running jobs & IO callback Event Loops H H H H
- 58. Basic Architecture 58Vert.x Core Worker Worker Worker delegate long running jobs & IO callback Event Loops H Client Client Client H H H request response
- 60. 60Verticle public class MyVerticle extends AbstractVerticle { private HttpServer server; @Override public void start(Future<Void> startFuture) { server = vertx.createHttpServer().requestHandler(req -> { req.response() .putHeader("content-type", "text/plain") .end("Hello from Vert.x!"); }); server.listen(8080, res -> { if (res.succeeded()) { startFuture.complete(); } else { startFuture.fail(res.cause()); } }); } @Override public void stop(Future<Void> stopFuture) { //... } }
- 61. 61Verticle public class MyVerticle extends AbstractVerticle { private HttpServer server; @Override public void start(Future<Void> startFuture) { server = vertx.createHttpServer().requestHandler(req -> { req.response() .putHeader("content-type", "text/plain") .end("Hello from Vert.x!"); }); server.listen(8080, res -> { if (res.succeeded()) { startFuture.complete(); } else { startFuture.fail(res.cause()); } }); } @Override public void stop(Future<Void> stopFuture) { //... } }
- 62. 62Verticle public class MyVerticle extends AbstractVerticle { private HttpServer server; @Override public void start(Future<Void> startFuture) { server = vertx.createHttpServer().requestHandler(req -> { req.response() .putHeader("content-type", "text/plain") .end("Hello from Vert.x!"); }); server.listen(8080, res -> { if (res.succeeded()) { startFuture.complete(); } else { startFuture.fail(res.cause()); } }); } @Override public void stop(Future<Void> stopFuture) { //... } }
- 63. 63Verticle public class MyVerticle extends AbstractVerticle { private HttpServer server; @Override public void start(Future<Void> startFuture) { server = vertx.createHttpServer().requestHandler(req -> { req.response() .putHeader("content-type", "text/plain") .end("Hello from Vert.x!"); }); server.listen(8080, res -> { if (res.succeeded()) { startFuture.complete(); } else { startFuture.fail(res.cause()); } }); } @Override public void stop(Future<Void> stopFuture) { //... } }
- 64. 64Verticle public class MyVerticle extends AbstractVerticle { private HttpServer server; @Override public void start(Future<Void> startFuture) { server = vertx.createHttpServer().requestHandler(req -> { req.response() .putHeader("content-type", "text/plain") .end("Hello from Vert.x!"); }); server.listen(8080, res -> { if (res.succeeded()) { startFuture.complete(); } else { startFuture.fail(res.cause()); } }); } @Override public void stop(Future<Void> stopFuture) { //... } }
- 65. 65Verticle public class MyVerticle extends AbstractVerticle { private HttpServer server; @Override public void start(Future<Void> startFuture) { server = vertx.createHttpServer().requestHandler(req -> { req.response() .putHeader("content-type", "text/plain") .end("Hello from Vert.x!"); }); server.listen(8080, res -> { if (res.succeeded()) { startFuture.complete(); } else { startFuture.fail(res.cause()); } }); } @Override public void stop(Future<Void> stopFuture) { //... } }
- 66. Standard Verticles Run on an event loop thread Verticles 66
- 67. Worker Verticles Run on the worker pool & never executed concurrently Verticles 67
- 68. Worker Verticles Run on the worker pool & never executed concurrently Verticles DeploymentOptions options = new DeploymentOptions().setWorker(true); vertx.deployVerticle("com.mycompany.MyOrderProcessorVerticle", options); 68
- 69. Multi-Threaded Worker Verticles Run on the worker pool & can be executed concurrently Verticles 69
- 70. 70Verticles Verticle Handler Handler Handler Handler Handler Handler
- 71. 71Verticles Verticle Verticle Verticle Verticle Verticle Verticle Verticle Verticle Verticle
- 72. 72Event Loops Verticle Verticle Verticle Verticle Verticle Verticle Event Loop Event Loop Verticle Verticle Verticle
- 73. 73Event Bus Verticle EVENT BUS Verticle Verticle Verticle Verticle Verticle Event Loop Event Loop Verticle Verticle Verticle
- 74. 74Vert.x Runtime Verticle EVENT BUS Verticle Verticle Verticle Verticle Verticle Event Loop Event Loop Verticle Verticle Verticle
- 75. 75Vert.x Runtime Socket 1 … ... Socket N Verticle EVENT BUS Verticle Verticle Verticle Verticle Verticle Event Loop Event Loop Verticle Verticle Verticle
- 76. 76Vert.x Runtime Socket 1 … ... Socket N Verticle EVENT BUS Verticle Verticle Verticle Verticle Verticle CPU Core CPU Core Event Loop Event Loop Verticle Verticle Verticle
- 84. Regions 84
- 94. Default: Hazelcast Alternatives: Infinispan Ignite Zookeper 3rd party: Atomix & etc. Cluster Manager Cluster Manager Vert.x Instance Vert.x Instance Vert.x Instance 94
- 95. $ vertx run myVerticle -ha Fail-Over Vert.x Instance 1 Vert.x Instance N ... Verticle 95
- 96. $ vertx run myVerticle -ha Fail-Over Vert.x Instance 1 Vert.x Instance N ... Verticle 96
- 97. $ vertx run myVerticle -ha Fail-Over Vert.x Instance 1 Vert.x Instance N ... Verticle 97
- 98. $ vertx run myVerticle -ha -hagroup group-1 Groups Group-1 Vert.x Instance 1 Vert.x Instance N Group-2 Vert.x Instance 1 Vert.x Instance N ... ... Verticle Verticle 98
- 99. $ vertx run myVerticle -ha -hagroup group-1 Groups Group 1 Vert.x Instance 1 Vert.x Instance N Group 2 Vert.x Instance 1 Vert.x Instance N ... ... Verticle Verticle 99
- 100. $ vertx run myVerticle -ha -hagroup group-1 Groups Group 1 Vert.x Instance 1 Vert.x Instance N Group 2 Vert.x Instance 1 Vert.x Instance N ... ... Verticle Verticle 100
- 101. $ vertx run myVerticle -ha -quorum 3 Quorum Vert.x Instance 2 Vert.x Instance 3 Verticle Verticle Vert.x Instance 1 Verticle 101
- 102. $ vertx run myVerticle -ha -quorum 3 Quorum Vert.x Instance 1 Vert.x Instance 2 Verticle Vert.x Instance 3 Verticle Verticle 102
- 103. $ vertx run myVerticle -ha -quorum 3 Quorum Vert.x Instance 1 Vert.x Instance 2 Vert.x Instance 3 103
- 104. $ vertx run myVerticle -ha -quorum 3 Quorum Vert.x Instance 2 Vert.x Instance 3 Vert.x Instance 1 104
- 105. $ vertx run myVerticle -ha -quorum 3 Quorum Vert.x Instance 2 Vert.x Instance 3 Verticle Verticle Vert.x Instance 1 Verticle 105
- 106. Round-robin by default Load Balancing Verticle Verticle Verticle Verticle VerticleVerticle 1 2 3 106
- 107. Shared Data
- 108. SharedData sd = vertx.sharedData(); //Local LocalMap<String, String> localMap = sd.getLocalMap("myLocalMap"); localMap.put("foo", "bar"); String val = localMap.get("foo"); //Async sd.<String, String>getAsyncMap("myAsyncMap", res -> { if (res.succeeded()) { AsyncMap<String, String> asyncMap = res.result(); } else { //fail } }); Maps 108
- 109. SharedData sd = vertx.sharedData(); //Local LocalMap<String, String> localMap = sd.getLocalMap("myLocalMap"); localMap.put("foo", "bar"); String val = localMap.get("foo"); //Async sd.<String, String>getAsyncMap("myAsyncMap", res -> { if (res.succeeded()) { AsyncMap<String, String> asyncMap = res.result(); } else { //fail } }); Maps 109
- 110. SharedData sd = vertx.sharedData(); //Local LocalMap<String, String> localMap = sd.getLocalMap("myLocalMap"); localMap.put("foo", "bar"); String val = localMap.get("foo"); //Async sd.<String, String>getAsyncMap("myAsyncMap", res -> { if (res.succeeded()) { AsyncMap<String, String> asyncMap = res.result(); } else { //fail } }); Maps 110
- 111. ... //Async get asyncMap.put("foo", "bar", resPut -> { if (resPut.succeeded()) { /*success*/ } else { /*fail*/ } }); //Async put asyncMap.get("foo", resGet -> { if (resGet.succeeded()) { Object val = resGet.result(); } else { //fail } }); Maps 111
- 112. ... //Async get asyncMap.put("foo", "bar", resPut -> { if (resPut.succeeded()) { /*success*/ } else { /*fail*/ } }); //Async put asyncMap.get("foo", resGet -> { if (resGet.succeeded()) { Object val = resGet.result(); } else { //fail } }); Maps 112
- 113. sd.getLock("mylock", res -> { if (res.succeeded()) { Lock lock = res.result(); // 5 seconds later we release the lock so someone else can get it vertx.setTimer(5000, tid -> lock.release()); } else { // Something went wrong } }); sd.getLockWithTimeout("mylock", 10000, res -> { if (res.succeeded()) { Lock lock = res.result(); } else { // Failed to get lock } }); Locks 113
- 114. sd.getLock("mylock", res -> { if (res.succeeded()) { Lock lock = res.result(); // 5 seconds later we release the lock so someone else can get it vertx.setTimer(5000, tid -> lock.release()); } else { // Something went wrong } }); sd.getLockWithTimeout("mylock", 10000, res -> { if (res.succeeded()) { Lock lock = res.result(); } else { // Failed to get lock } }); Locks 114
- 115. sd.getCounter("mycounter", res -> { if (res.succeeded()) { Counter counter = res.result(); } else { // Something went wrong! } }); Counters 115
- 117. • File System Other Core Features 117
- 118. • File System • TCP Servers & Clients Other Core Features 118
- 119. • File System • TCP Servers & Clients • HTTP Servers & Clients Other Core Features 119
- 120. • File System • TCP Servers & Clients • HTTP Servers & Clients • UDP Servers & Clients Other Core Features 120
- 121. • File System • TCP Servers & Clients • HTTP Servers & Clients • UDP Servers & Clients • DNS Client Other Core Features 121
- 122. • File System • TCP Servers & Clients • HTTP Servers & Clients • UDP Servers & Clients • DNS Client • Launcher (fat jars) Other Core Features 122
- 123. Web Server & Clients
- 124. HttpServer server = vertx.createHttpServer(); Router router = Router.router(vertx); router.post("/entity/:id").handler(routingContext -> { // This handler will be called for every request HttpServerResponse response = routingContext.response(); response.putHeader("content-type", "text/plain"); // Write to the response and end it response.end("Hello World from Vert.x-Web!"); }); server.requestHandler(router::accept).listen(8080); Web Server 124
- 125. HttpServer server = vertx.createHttpServer(); Router router = Router.router(vertx); router.post("/entity/:id").handler(routingContext -> { // This handler will be called for every request HttpServerResponse response = routingContext.response(); response.putHeader("content-type", "text/plain"); // Write to the response and end it response.end("Hello World from Vert.x-Web!"); }); server.requestHandler(router::accept).listen(8080); Web Server 125
- 126. HttpServer server = vertx.createHttpServer(); Router router = Router.router(vertx); router.post("/entity/:id").handler(routingContext -> { // This handler will be called for every request HttpServerResponse response = routingContext.response(); response.putHeader("content-type", "text/plain"); // Write to the response and end it response.end("Hello World from Vert.x-Web!"); }); server.requestHandler(router::accept).listen(8080); Web Server 126
- 127. HttpServer server = vertx.createHttpServer(); Router router = Router.router(vertx); router.post("/entity/:id").handler(routingContext -> { // This handler will be called for every request HttpServerResponse response = routingContext.response(); response.putHeader("content-type", "text/plain"); // Write to the response and end it response.end("Hello World from Vert.x-Web!"); }); server.requestHandler(router::accept).listen(8080); Web Server 127
- 128. WebClient client = WebClient.create(vertx); client .get(8080, "myserver.mycompany.com", "/some-uri") .timeout(5000) .addQueryParam("param", "param_value") .send(ar -> { if (ar.succeeded()) { // Obtain response HttpResponse<Buffer> response = ar.result(); System.out.println("Received response with status code" + response.statusCode()); } else { System.out.println("Something went wrong " + ar.cause().getMessage()); } }); Web Client 128
- 129. WebClient client = WebClient.create(vertx); client .get(8080, "myserver.mycompany.com", "/some-uri") .timeout(5000) .addQueryParam("param", "param_value") .send(ar -> { if (ar.succeeded()) { // Obtain response HttpResponse<Buffer> response = ar.result(); System.out.println("Received response with status code" + response.statusCode()); } else { System.out.println("Something went wrong " + ar.cause().getMessage()); } }); Web Client 129
- 130. WebClient client = WebClient.create(vertx); client .get(8080, "myserver.mycompany.com", "/some-uri") .timeout(5000) .addQueryParam("param", "param_value") .send(ar -> { if (ar.succeeded()) { // Obtain response HttpResponse<Buffer> response = ar.result(); System.out.println("Received response with status code" + response.statusCode()); } else { System.out.println("Something went wrong " + ar.cause().getMessage()); } }); Web Client 130
- 131. WebClient client = WebClient.create(vertx); client .get(8080, "myserver.mycompany.com", "/some-uri") .timeout(5000) .addQueryParam("param", "param_value") .send(ar -> { if (ar.succeeded()) { // Obtain response HttpResponse<Buffer> response = ar.result(); System.out.println("Received response with status code" + response.statusCode()); } else { System.out.println("Something went wrong " + ar.cause().getMessage()); } }); Web Client 131
- 132. WebClient client = WebClient.create(vertx); client .get(8080, "myserver.mycompany.com", "/some-uri") .timeout(5000) .addQueryParam("param", "param_value") .send(ar -> { if (ar.succeeded()) { // Obtain response HttpResponse<Buffer> response = ar.result(); System.out.println("Received response with status code" + response.statusCode()); } else { System.out.println("Something went wrong " + ar.cause().getMessage()); } }); Web Client 132
- 133. WebClient client = WebClient.create(vertx); client .get(8080, "myserver.mycompany.com", "/some-uri") .timeout(5000) .addQueryParam("param", "param_value") .send(ar -> { if (ar.succeeded()) { // Obtain response HttpResponse<Buffer> response = ar.result(); System.out.println("Received response with status code" + response.statusCode()); } else { System.out.println("Something went wrong " + ar.cause().getMessage()); } }); Web Client 133
- 134. client .post(8080, "myserver.mycompany.com", "/some-uri") .sendJsonObject(new JsonObject() .put("firstName", "Dale") .put("lastName", "Cooper"), ar -> { if (ar.succeeded()) { // Ok } }); client .post(8080, "myserver.mycompany.com", "/some-uri") .sendJson(new User("Dale", "Cooper"), ar -> { if (ar.succeeded()) { // Ok } }); Web Client 134
- 135. client .post(8080, "myserver.mycompany.com", "/some-uri") .sendJsonObject(new JsonObject() .put("firstName", "Dale") .put("lastName", "Cooper"), ar -> { if (ar.succeeded()) { // Ok } }); client .post(8080, "myserver.mycompany.com", "/some-uri") .sendJson(new User("Dale", "Cooper"), ar -> { if (ar.succeeded()) { // Ok } }); Web Client 135
- 136. HTTP Request Validation API Contract 136
- 137. HTTP Request Validation OpenAPI 3 Support (with automatic requests validation) API Contract 137
- 139. • OAuth 2 • JWT • Apache Shiro • JDBC • MongoDB • .htdigest • ... your implementation Auth Prodivers 139
- 140. router.route("/private/somepath").handler(routingContext -> { User user = routingContext.user(); user.isAuthorised("permission_or_authority", event -> { //async handler }); user.isAuthorised("role:role_name", event -> { //async handler }); }); Auth 140
- 141. router.route("/private/somepath").handler(routingContext -> { User user = routingContext.user(); user.isAuthorised("permission_or_authority", event -> { //async handler }); user.isAuthorised("role:role_name", event -> { //async handler }); }); Auth 141
- 142. router.route("/private/somepath").handler(routingContext -> { User user = routingContext.user(); user.isAuthorised("permission_or_authority", event -> { //async handler }); user.isAuthorised("role:role_name", event -> { //async handler }); }); Auth 142
- 143. Microservices
- 153. • Publish & Discover • HTTP Endpoints Service Discovery Sales Accounting WarehouseUsers Stores HTTP DB SQL 153
- 154. • Publish & Discover • HTTP Endpoints • Data Sources Service Discovery Sales Accounting WarehouseUsers Stores HTTP DB SQL 154
- 155. • Publish & Discover • HTTP Endpoints • Data Sources • Event Bus Services Service Discovery Sales Accounting WarehouseUsers Stores HTTP DB SQL 155
- 156. • Publish & Discover • HTTP Endpoints • Data Sources • Event Bus Services • Anything you can imagine Service Discovery Sales Accounting WarehouseUsers Stores HTTP DB SQL 156
- 158. Circuit Breaker 158 Closed Open Success Too many fails
- 159. Circuit Breaker 159 Closed Open Success Too many fails Fast Fail
- 160. Circuit Breaker 160 Closed Open Half-Open Success Too many fails Fast Fail Try one request
- 161. Circuit Breaker 161 Closed Open Half-Open Success Too many fails Fast Fail Try one request Fail
- 162. Circuit Breaker 162 Closed Open Half-Open Success Too many fails Fast Fail Try one request Fail Success
- 163. CircuitBreaker breaker = CircuitBreaker.create("my-circuit-breaker", vertx, new CircuitBreakerOptions() .setMaxFailures(5) // number of failure before opening the circuit .setTimeout(2000) // consider a failure if the operation does not succeed in time .setFallbackOnFailure(true) // do we call the fallback on failure .setResetTimeout(10000) // time spent in open state before attempting to re-try ); breaker.execute(future -> { // future.complete(“success") // future.fail("cause") }).setHandler(ar -> { // Get the operation result. }); Circuit Breaker 163
- 164. CircuitBreaker breaker = CircuitBreaker.create("my-circuit-breaker", vertx, new CircuitBreakerOptions() .setMaxFailures(5) // number of failure before opening the circuit .setTimeout(2000) // consider a failure if the operation does not succeed in time .setFallbackOnFailure(true) // do we call the fallback on failure .setResetTimeout(10000) // time spent in open state before attempting to re-try ); breaker.execute(future -> { // future.complete(“success") // future.fail("cause") }).setHandler(ar -> { // Get the operation result. }); Circuit Breaker 164
- 165. CircuitBreaker breaker = CircuitBreaker.create("my-circuit-breaker", vertx, new CircuitBreakerOptions() .setMaxFailures(5) // number of failure before opening the circuit .setTimeout(2000) // consider a failure if the operation does not succeed in time .setFallbackOnFailure(true) // do we call the fallback on failure .setResetTimeout(10000) // time spent in open state before attempting to re-try ); breaker.execute(future -> { // future.complete(“success") // future.fail("cause") }).setHandler(ar -> { // Get the operation result. }); Circuit Breaker 165
- 166. CircuitBreaker breaker = CircuitBreaker.create("my-circuit-breaker", vertx, new CircuitBreakerOptions() .setMaxFailures(5) // number of failure before opening the circuit .setTimeout(2000) // consider a failure if the operation does not succeed in time .setFallbackOnFailure(true) // do we call the fallback on failure .setResetTimeout(10000) // time spent in open state before attempting to re-try ); breaker.executeWithFallback(future -> { // future.complete(“success") // future.fail("cause") }, th -> { // Fallback return "Hello"; }).setHandler(ar -> { // Get the operation result. }); Circuit Breaker 166
- 167. • Formats • Properties • JSON • YAML • etc. Config 167
- 168. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory 168
- 169. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables 169
- 170. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties 170
- 171. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP 171
- 172. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus 172
- 173. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus • Git 173
- 174. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus • Git • Kubernetes ConfigMap 174
- 175. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus • Git • Kubernetes ConfigMap • Redis 175
- 176. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus • Git • Kubernetes ConfigMap • Redis • Zookeeper / Consul 176
- 177. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus • Git • Kubernetes ConfigMap • Redis • Zookeeper / Consul • Vault 177
- 178. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus • Git • Kubernetes ConfigMap • Redis • Zookeeper / Consul • Vault • Spring Config Server 178
- 179. • Formats • Properties • JSON • YAML • etc. Config • Sources • File / Directory • Environment Variables • System Properties • HTTP • Event Bus • Git • Kubernetes ConfigMap • Redis • Zookeeper / Consul • Vault • Spring Config Server • etc. 179
- 180. Data Access SQL & NoSQL
- 181. Out of the box • SQL • JDBC • MySQL • PostgreSQL Data Access 181
- 182. Out of the box • SQL • JDBC • MySQL • PostgreSQL • NoSQL • MongoDB • Redis Data Access 182
- 183. Out of the box • SQL • JDBC • MySQL • PostgreSQL • NoSQL • MongoDB • Redis 3rd party • Anything... Data Access 183
- 184. Integration
- 185. 185Integration • Event Bus Bridges • TCP Bridge
- 186. 186Integration • Event Bus Bridges • TCP Bridge • Camel Bridge
- 187. 187Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge
- 188. 188Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge • Messaging & Streaming • RabbitMQ Client
- 189. 189Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge • Messaging & Streaming • RabbitMQ Client • Kafka Client
- 190. 190Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge • Messaging & Streaming • RabbitMQ Client • Kafka Client • STOMP Server & Client
- 191. 191Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge • Messaging & Streaming • RabbitMQ Client • Kafka Client • STOMP Server & Client • IoT • MQTT
- 192. 192Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge • Messaging & Streaming • RabbitMQ Client • Kafka Client • STOMP Server & Client • IoT • MQTT • Java EE • JCA Resource Adaptor
- 193. 193Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge • Messaging & Streaming • RabbitMQ Client • Kafka Client • STOMP Server & Client • IoT • MQTT • Java EE • JCA Resource Adaptor • Misc • Mail Client
- 194. 194Integration • Event Bus Bridges • TCP Bridge • Camel Bridge • AMQP Bridge • Messaging & Streaming • RabbitMQ Client • Kafka Client • STOMP Server & Client • IoT • MQTT • Java EE • JCA Resource Adaptor • Misc • Mail Client • Consul Client
- 195. Metrics
- 197. Metrics 197 Micrometer SignalFx StatsD New Relix Influx/Telegraf JMXPrometheus Netflix Atlas CloudWatch Datadog Graphite Ganglia Wavefront
- 199. Reactive
- 200. fileSystem .rxReadFile("cities.txt").toFlowable() .flatMap(buffer -> Flowable.fromArray(buffer.toString().split("r?n"))) .flatMap(city -> searchByCityName(httpClient, city)) .flatMap(HttpClientResponse::toFlowable) .map(extractingWoeid()) .flatMap(cityId -> getDataByPlaceId(httpClient, cityId)) .flatMap(toBufferFlowable()) .map(Buffer::toJsonObject) .map(toCityAndDayLength()) .subscribe(System.out::println, Throwable::printStackTrace); Reactive Programming 200
- 201. Observable<Double> observable = vertx.eventBus(). <Double>consumer("heat-sensor"). bodyStream(). toObservable(); observable. buffer(1, TimeUnit.SECONDS). map(samples -> samples. stream(). collect(Collectors.averagingDouble(d -> d))). subscribe(heat -> { vertx.eventBus().send("news-feed", "Current heat is " + heat); }); Reactive Programming 201
- 202. • Vert.x supports • RxJava 1 Reactive Programming 202
- 203. • Vert.x supports • RxJava 1 • RxJava 2 Reactive Programming 203
- 204. • Vert.x supports • RxJava 1 • RxJava 2 • Reactive Streams (publishers & subscribers) Reactive Programming 204
- 205. Reactive Manifesto 205 Responsive Message Driven Elastic Resilient
- 206. Reactive & Distributed Vert.x Summary
- 207. Reactive & Distributed Event Bus 207
- 208. Reactive & Distributed Event Bus 208
- 209. Reactive & Distributed Event Bus Server 1 Server 2 Server 3 Server N... 209
- 210. Reactive & Distributed Event Bus Handler Handler Handler Handler Handler Handler Server 1 Server 2 Server 3 Server N... 210
- 211. Reactive & Distributed Module ModuleModule Event Bus Handler Handler Handler Handler Handler Handler Server 1 Server 2 Server 3 Server N... 211
- 212. Reactive & Distributed 212 Bridged Apps Data Access Metrics External Apps IoT Devices etc. Module ModuleModule Event Bus Handler Handler Handler Handler Handler Handler Server 1 Server 2 Server 3 Server N...
- 213. Reactive & Distributed 213 Bridged Apps Data Access Metrics External Apps IoT Devices etc. Module ModuleModule Event Bus Handler Handler Handler Handler Handler Handler Server 1 Server 2 Server 3 Server N...
- 214. • Java • JavaScript • Groovy • Ruby • Ceylon • Scala • Kotlin Polyglot 214 Bridged Apps Data Access Metrics External Apps IoT Devices etc. Module ModuleModule Event Bus Handler Handler Handler Handler Handler Handler Server 1 Server 2 Server 3 Server N...
- 215. • JavaScript • Vert.x event bus integration over SockJS for browser-based/node.js apps. Polyglot 215 Bridged Apps Data Access Metrics External Apps IoT Devices etc. Module ModuleModule Event Bus Handler Handler Handler Handler Handler Handler Server 1 Server 2 Server 3 Server N...
- 216. 216Reactive & Distributed Module Module Module Module Module Module Module Module Discovery & Configuration Distributed Application JDBC Client JDBC ? ? ? HTTP? ? Event Bus External Apps Polyglot Cloud IoT
Notes de l'éditeur
- JSON body example
- JSON body example