mirror of https://github.com/dapr/docs.git
Added full code snippets of pub sub
Signed-off-by: Amulya Varote <amulyavarote@Amulyas-MacBook-Pro.local>
This commit is contained in:
Amulya Varote
parent
1f879395a9
commit
5cb62329b0
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@ -304,8 +304,11 @@ Below are code examples that leverage Dapr SDKs to subscribe to a topic.
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{{% codetab %}}
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```csharp
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//dependencies
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using System.Collections.Generic;
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using System.Threading.Tasks;
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using System;
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using Microsoft.AspNetCore.Mvc;
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using Dapr;
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using Dapr.Client;
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@ -315,7 +318,7 @@ namespace CheckoutService.controller
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[ApiController]
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public class CheckoutServiceController : Controller
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{
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//Subscribe to a topic
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//Subscribe to a topic
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[Topic("order_pub_sub", "orders")]
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[HttpPost("checkout")]
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public void getCheckout([FromBody] int orderId)
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@ -347,14 +350,20 @@ import io.dapr.Topic;
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import io.dapr.client.domain.CloudEvent;
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<<<<<<< HEAD
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<<<<<<< HEAD
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<<<<<<< HEAD
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=======
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=======
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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import org.springframework.web.bind.annotation.*;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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<<<<<<< HEAD
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>>>>>>> 0e83af7a (Added pub sub documentation)
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=======
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>>>>>>> fbadd23a (Modified based on the review comments - 1)
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=======
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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import reactor.core.publisher.Mono;
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//code
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@ -362,7 +371,7 @@ import reactor.core.publisher.Mono;
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public class CheckoutServiceController {
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private static final Logger log = LoggerFactory.getLogger(CheckoutServiceController.class);
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//Subscribe to a topic
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//Subscribe to a topic
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@Topic(name = "orders", pubsubName = "order_pub_sub")
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@PostMapping(path = "/checkout")
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public Mono<Void> getCheckout(@RequestBody(required = false) CloudEvent<String> cloudEvent) {
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@ -393,17 +402,21 @@ from cloudevents.sdk.event import v1
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from dapr.ext.grpc import App
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<<<<<<< HEAD
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<<<<<<< HEAD
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<<<<<<< HEAD
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=======
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import logging
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import json
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>>>>>>> 0e83af7a (Added pub sub documentation)
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=======
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>>>>>>> fbadd23a (Modified based on the review comments - 1)
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=======
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import logging
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import json
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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#code
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app = App()
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logging.basicConfig(level = logging.INFO)
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#Subscribe to a topic
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@app.subscribe(pubsub_name='order_pub_sub', topic='orders')
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def mytopic(event: v1.Event) -> None:
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@ -463,7 +476,7 @@ var sub = &common.Subscription{
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func main() {
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s := daprd.NewService(":6002")
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//Subscribe to a topic
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//Subscribe to a topic
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if err := s.AddTopicEventHandler(sub, eventHandler); err != nil {
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log.Fatalf("error adding topic subscription: %v", err)
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}
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@ -476,7 +489,6 @@ func eventHandler(ctx context.Context, e *common.TopicEvent) (retry bool, err er
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log.Printf("Subscriber received: %s", e.Data)
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return false, nil
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}
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```
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Navigate to the directory containing the above code, then run the following command to launch a Dapr sidecar and run the application:
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@ -490,7 +502,6 @@ dapr run --app-id checkout --app-port 6002 --dapr-http-port 3602 --dapr-grpc-por
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{{% codetab %}}
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```javascript
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//dependencies
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import { DaprServer, CommunicationProtocolEnum } from 'dapr-client';
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@ -511,14 +522,13 @@ async function start(orderId) {
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daprHost,
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process.env.DAPR_HTTP_PORT,
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CommunicationProtocolEnum.HTTP
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);
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//Subscribe to a topic
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);
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//Subscribe to a topic
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await server.pubsub.subscribe("order_pub_sub", "orders", async (orderId) => {
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console.log(`Subscriber received: ${JSON.stringify(orderId)}`)
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});
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await server.startServer();
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}
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```
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Navigate to the directory containing the above code, then run the following command to launch a Dapr sidecar and run the application:
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@ -610,10 +620,10 @@ Below are code examples that leverage Dapr SDKs to publish a topic.
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{{% codetab %}}
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```csharp
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//dependencies
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<<<<<<< HEAD
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<<<<<<< HEAD
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<<<<<<< HEAD
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using Dapr.Client;
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=======
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using System;
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@ -628,6 +638,16 @@ using System.Threading;
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=======
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using Dapr.Client;
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>>>>>>> fbadd23a (Modified based on the review comments - 1)
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=======
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using System;
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using System.Collections.Generic;
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using System.Net.Http;
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using System.Net.Http.Headers;
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using System.Threading.Tasks;
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using Dapr.Client;
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using Microsoft.AspNetCore.Mvc;
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using System.Threading;
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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//code
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namespace EventService
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@ -636,6 +656,7 @@ namespace EventService
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{
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static async Task Main(string[] args)
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{
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<<<<<<< HEAD
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string PUBSUB_NAME = "order_pub_sub";
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string TOPIC_NAME = "orders";
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int orderId = 100;
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@ -653,10 +674,24 @@ namespace EventService
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>>>>>>> fbadd23a (Modified based on the review comments - 1)
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await client.PublishEventAsync(PUBSUB_NAME, TOPIC_NAME, orderId, cancellationToken);
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Console.WriteLine("Published data: " + orderId);
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=======
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string PUBSUB_NAME = "order_pub_sub";
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string TOPIC_NAME = "orders";
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while(true) {
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System.Threading.Thread.Sleep(5000);
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Random random = new Random();
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int orderId = random.Next(1,1000);
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CancellationTokenSource source = new CancellationTokenSource();
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CancellationToken cancellationToken = source.Token;
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using var client = new DaprClientBuilder().Build();
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//Using Dapr SDK to publish a topic
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await client.PublishEventAsync(PUBSUB_NAME, TOPIC_NAME, orderId, cancellationToken);
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Console.WriteLine("Published data: " + orderId);
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}
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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}
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}
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}
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```
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Navigate to the directory containing the above code, then run the following command to launch a Dapr sidecar and run the application:
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@ -677,16 +712,25 @@ import io.dapr.client.domain.Metadata;
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import static java.util.Collections.singletonMap;
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<<<<<<< HEAD
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<<<<<<< HEAD
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<<<<<<< HEAD
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=======
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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>>>>>>> 0e83af7a (Added pub sub documentation)
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=======
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>>>>>>> fbadd23a (Modified based on the review comments - 1)
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=======
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.util.Random;
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import java.util.concurrent.TimeUnit;
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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//code
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@SpringBootApplication
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public class OrderProcessingServiceApplication {
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<<<<<<< HEAD
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public static void main(String[] args) throws InterruptedException{
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String MESSAGE_TTL_IN_SECONDS = "1000";
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String TOPIC_NAME = "orders";
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@ -720,6 +764,30 @@ Navigate to the directory containing the above code, then run the following comm
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=======
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=======
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private static final Logger log = LoggerFactory.getLogger(OrderProcessingServiceApplication.class);
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public static void main(String[] args) throws InterruptedException{
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String MESSAGE_TTL_IN_SECONDS = "1000";
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String TOPIC_NAME = "orders";
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String PUBSUB_NAME = "order_pub_sub";
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while(true) {
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TimeUnit.MILLISECONDS.sleep(5000);
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Random random = new Random();
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int orderId = random.nextInt(1000-1) + 1;
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DaprClient client = new DaprClientBuilder().build();
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//Using Dapr SDK to publish a topic
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client.publishEvent(
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PUBSUB_NAME,
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TOPIC_NAME,
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orderId,
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singletonMap(Metadata.TTL_IN_SECONDS, MESSAGE_TTL_IN_SECONDS)).block();
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log.info("Published data:" + orderId);
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}
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}
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}
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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```
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Navigate to the directory containing the above code, then run the following command to launch a Dapr sidecar and run the application:
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@ -737,21 +805,28 @@ dapr run --app-id orderprocessing --app-port 6001 --dapr-http-port 3601 --dapr-g
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<<<<<<< HEAD
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<<<<<<< HEAD
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#dependencies
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<<<<<<< HEAD
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=======
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#dependencies
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=======
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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import random
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from time import sleep
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import requests
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import logging
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import json
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<<<<<<< HEAD
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>>>>>>> 0e83af7a (Added pub sub documentation)
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=======
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#dependencies
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>>>>>>> fbadd23a (Modified based on the review comments - 1)
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=======
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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from dapr.clients import DaprClient
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#code
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logging.basicConfig(level = logging.INFO)
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<<<<<<< HEAD
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orderId = 100
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<<<<<<< HEAD
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@ -769,6 +844,22 @@ with DaprClient() as client:
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logging.info('Published data: ' + str(orderId))
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<<<<<<< HEAD
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=======
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while True:
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sleep(random.randrange(50, 5000) / 1000)
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orderId = random.randint(1, 1000)
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PUBSUB_NAME = 'order_pub_sub'
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TOPIC_NAME = 'orders'
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with DaprClient() as client:
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#Using Dapr SDK to publish a topic
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result = client.publish_event(
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pubsub_name=PUBSUB_NAME,
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topic_name=TOPIC_NAME,
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data=json.dumps(orderId),
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data_content_type='application/json',
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)
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logging.info('Published data: ' + str(orderId))
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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```
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Navigate to the directory containing the above code, then run the following command to launch a Dapr sidecar and run the application:
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@ -808,20 +899,22 @@ dapr run --app-id orderprocessing --app-port 6001 --dapr-http-port 3601 --app-pr
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```go
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//dependencies
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import (
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"context"
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"log"
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"strconv"
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dapr "github.com/dapr/go-sdk/client"
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"context"
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"log"
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"math/rand"
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"time"
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"strconv"
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dapr "github.com/dapr/go-sdk/client"
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)
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//code
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var (
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PUBSUB_NAME = "order_pub_sub"
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TOPIC_NAME = "orders"
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PUBSUB_NAME = "order_pub_sub"
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TOPIC_NAME = "orders"
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)
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func main() {
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<<<<<<< HEAD
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orderId := 100
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client, err := dapr.NewClient()
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if err != nil {
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@ -847,8 +940,26 @@ func main() {
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panic(err)
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}
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log.Println("Published data: " + strconv.Itoa(orderId))
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=======
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for i := 0; i < 10; i++ {
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time.Sleep(5000)
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orderId := rand.Intn(1000-1) + 1
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client, err := dapr.NewClient()
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if err != nil {
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panic(err)
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}
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defer client.Close()
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ctx := context.Background()
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//Using Dapr SDK to publish a topic
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if err := client.PublishEvent(ctx, PUBSUB_NAME, TOPIC_NAME, []byte(strconv.Itoa(orderId)));
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err != nil {
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panic(err)
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}
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log.Println("Published data: " + strconv.Itoa(orderId))
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}
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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}
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```
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<<<<<<< HEAD
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@ -875,11 +986,14 @@ dapr run --app-id orderprocessing --app-port 6001 --dapr-http-port 3601 --dapr-g
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```javascript
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//dependencies
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import { DaprServer, DaprClient, CommunicationProtocolEnum } from 'dapr-client';
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import { DaprServer, CommunicationProtocolEnum } from 'dapr-client';
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//code
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const daprHost = "127.0.0.1";
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const serverHost = "127.0.0.1";
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const serverPort = "6002";
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<<<<<<< HEAD
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var main = function() {
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<<<<<<< HEAD
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<<<<<<< HEAD
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@ -912,10 +1026,29 @@ async function start(orderId) {
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//Using Dapr SDK to publish a topic
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>>>>>>> fbadd23a (Modified based on the review comments - 1)
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await client.pubsub.publish("order_pub_sub", "orders", orderId);
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}
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=======
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start().catch((e) => {
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console.error(e);
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process.exit(1);
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});
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main();
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async function start(orderId) {
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const PUBSUB_NAME = "order_pub_sub"
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const TOPIC_NAME = "orders"
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const server = new DaprServer(
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serverHost,
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serverPort,
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daprHost,
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process.env.DAPR_HTTP_PORT,
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CommunicationProtocolEnum.HTTP
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);
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//Using Dapr SDK to publish a topic
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await server.pubsub.subscribe(PUBSUB_NAME, TOPIC_NAME, async (orderId) => {
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console.log(`Subscriber received: ${JSON.stringify(orderId)}`)
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});
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await server.startServer();
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>>>>>>> f30a0acb (Added full code snippets of pub sub)
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}
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```
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Navigate to the directory containing the above code, then run the following command to launch a Dapr sidecar and run the application:
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Reference in New Issue