public static void Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = "topic/{topicName}")] HttpRequest req,
[DaprPublish(PubSubName = "%PubSubName%", Topic = "{topicName}")] out DaprPubSubEvent pubSubEvent,
ILogger log)
{
string requestBody = new StreamReader(req.Body).ReadToEnd();
pubSubEvent = new DaprPubSubEvent(requestBody);
}
public static void Run(
[DaprTopicTrigger(Topic = "A")] CloudEvent subEvent,
[DaprPublish(Topic = "B")] out object pubEvent,
ILogger log)
{
log.LogInformation("C# function processed a TransferEventBetweenTopics request from the Dapr Runtime.");
pubEvent = new DaprPubSubEvent("Transfer from Topic A: " + subEvent.Data);
}
public async Task Publish_ReturnValue_Bound()
{
var input = new DaprPubSubEvent("Hello, world!");
await this.CallFunctionAsync(nameof(Functions.DaprPubSubEventReturnValueBound), "input", input);
SavedHttpRequest req = this.GetSinglePublishRequest();
string expectedValue = JsonConvert.SerializeObject(input.Payload);
Assert.Equal($"/v1.0/publish/MyBoundPubSub/MyBoundTopic", req.Path);
Assert.Equal(expectedValue, req.ContentAsString);
}
public async Task Publish_NoTopicSpecified()
{
// No topic is specified
var input = new DaprPubSubEvent("Hello, world!");
FunctionInvocationException error = await Assert.ThrowsAsync <FunctionInvocationException>(() =>
this.CallFunctionAsync(nameof(Functions.DaprPubSubEventReturnValueAnyTopic), "input", input));
// The exception message should reflect the fact that no topic was specified
ArgumentException innerError = Assert.IsType <ArgumentException>(error.GetBaseException());
Assert.Contains("No topic", innerError.Message);
// No requests should have been sent
Assert.Empty(this.GetDaprRequests());
}
public static DaprPubSubEvent DaprPubSubEventReturnValueBound(DaprPubSubEvent input) => input;
public static DaprPubSubEvent DaprPubSubEventReturnValueAnyTopic(DaprPubSubEvent input) => input;