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Update subscriptions examples #4403

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Update subscriptions examples #4403

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225736d
update examples for pub sub
hhunter-ms Oct 25, 2024
34cae7c
Merge branch 'v1.14' into issue_4322
hhunter-ms Oct 25, 2024
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29 changes: 15 additions & 14 deletions ...ntent/en/developing-applications/building-blocks/pubsub/subscription-methods.md
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@ metadata:
spec:
topic: orders
routes:
default: /checkout
default: /orders
pubsubname: pubsub
scopes:
- orderprocessing
Expand All @@ -46,7 +46,7 @@ scopes:

Here the subscription called `order`:
- Uses the pub/sub component called `pubsub` to subscribes to the topic called `orders`.
- Sets the `route` field to send all topic messages to the `/checkout` endpoint in the app.
- Sets the `route` field to send all topic messages to the `/orders` endpoint in the app.
- Sets `scopes` field to scope this subscription for access only by apps with IDs `orderprocessing` and `checkout`.

When running Dapr, set the YAML component file path to point Dapr to the component.
Expand Down Expand Up @@ -113,7 +113,7 @@ In your application code, subscribe to the topic specified in the Dapr pub/sub c

```csharp
//Subscribe to a topic
[HttpPost("checkout")]
[HttpPost("orders")]
public void getCheckout([FromBody] int orderId)
{
Console.WriteLine("Subscriber received : " + orderId);
Expand All @@ -128,7 +128,7 @@ public void getCheckout([FromBody] int orderId)
import io.dapr.client.domain.CloudEvent;

//Subscribe to a topic
@PostMapping(path = "/checkout")
@PostMapping(path = "/orders")
public Mono<Void> getCheckout(@RequestBody(required = false) CloudEvent<String> cloudEvent) {
return Mono.fromRunnable(() -> {
try {
Expand All @@ -146,7 +146,7 @@ public Mono<Void> getCheckout(@RequestBody(required = false) CloudEvent<String>
from cloudevents.sdk.event import v1

#Subscribe to a topic
@app.route('/checkout', methods=['POST'])
@app.route('/orders', methods=['POST'])
def checkout(event: v1.Event) -> None:
data = json.loads(event.Data())
logging.info('Subscriber received: ' + str(data))
Expand All @@ -163,7 +163,7 @@ const app = express()
app.use(bodyParser.json({ type: 'application/*+json' }));

// listen to the declarative route
app.post('/checkout', (req, res) => {
app.post('/orders', (req, res) => {
console.log(req.body);
res.sendStatus(200);
});
Expand All @@ -178,7 +178,7 @@ app.post('/checkout', (req, res) => {
var sub = &common.Subscription{
PubsubName: "pubsub",
Topic: "orders",
Route: "/checkout",
Route: "/orders",
}

func eventHandler(ctx context.Context, e *common.TopicEvent) (retry bool, err error) {
Expand All @@ -191,7 +191,7 @@ func eventHandler(ctx context.Context, e *common.TopicEvent) (retry bool, err er

{{< /tabs >}}

The `/checkout` endpoint matches the `route` defined in the subscriptions and this is where Dapr sends all topic messages to.
The `/orders` endpoint matches the `route` defined in the subscriptions and this is where Dapr sends all topic messages to.

### Streaming subscriptions

Expand Down Expand Up @@ -325,7 +325,7 @@ In the example below, you define the values found in the [declarative YAML subsc

```csharp
[Topic("pubsub", "orders")]
[HttpPost("/checkout")]
[HttpPost("/orders")]
public async Task<ActionResult<Order>>Checkout(Order order, [FromServices] DaprClient daprClient)
{
// Logic
Expand All @@ -337,7 +337,7 @@ or

```csharp
// Dapr subscription in [Topic] routes orders topic to this route
app.MapPost("/checkout", [Topic("pubsub", "orders")] (Order order) => {
app.MapPost("/orders", [Topic("pubsub", "orders")] (Order order) => {
Console.WriteLine("Subscriber received : " + order);
return Results.Ok(order);
});
Expand All @@ -359,7 +359,7 @@ app.UseEndpoints(endpoints =>
```java
private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();

@Topic(name = "checkout", pubsubName = "pubsub")
@Topic(name = "orders", pubsubName = "pubsub")
@PostMapping(path = "/orders")
public Mono<Void> handleMessage(@RequestBody(required = false) CloudEvent<String> cloudEvent) {
return Mono.fromRunnable(() -> {
Expand All @@ -370,6 +370,7 @@ public Mono<Void> handleMessage(@RequestBody(required = false) CloudEvent<String
throw new RuntimeException(e);
}
});
}
```

{{% /codetab %}}
Expand All @@ -382,7 +383,7 @@ def subscribe():
subscriptions = [
{
'pubsubname': 'pubsub',
'topic': 'checkout',
'topic': 'orders',
'routes': {
'rules': [
{
Expand Down Expand Up @@ -418,7 +419,7 @@ app.get('/dapr/subscribe', (req, res) => {
res.json([
{
pubsubname: "pubsub",
topic: "checkout",
topic: "orders",
routes: {
rules: [
{
Expand Down Expand Up @@ -480,7 +481,7 @@ func configureSubscribeHandler(w http.ResponseWriter, _ *http.Request) {
t := []subscription{
{
PubsubName: "pubsub",
Topic: "checkout",
Topic: "orders",
Routes: routes{
Rules: []rule{
{
Expand Down
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