Add code example of how to create a CloudEvent in code and use in pub/sub requests

[msfussell]

In this topic
https://docs.dapr.io/developing-applications/building-blocks/pubsub/howto-publish-subscribe/#sending-a-custom-cloudevent it describes how you can send your own cloudevent but does not show any code example. This will become more common when Dapr event filtering feature dapr/dapr#2582 is introduced.

This doc issue is to provide a code example of how to create a CloudEvent in code and use in pub/sub requests.

[willtsai]

@msfussell -- if we add examples for publishing a custom CloudEvent via Bash and Powershell, would that satisfy this requirement? i.e. something like:

Bash:
curl -X POST http://localhost:3500/v1.0/publish/pubsub/deathStarStatus -H "Content-Type: application/cloudevents+json" -d '{"specversion" : "1.0", "type" : "com.dapr.cloudevent.sent", "source" : "testcloudeventspubsub", "subject" : "Cloud Events Test", "id" : "someCloudEventId", "time" : "2021-08-02T09:00:00Z", "datacontenttype" : "application/cloudevents+json", "data" : {"status": "completed"}}'

Powershell:
Invoke-RestMethod -Method Post -ContentType 'application/cloudevents+json' -Body '{"specversion" : "1.0", "type" : "com.dapr.cloudevent.sent", "source" : "testcloudeventspubsub", "subject" : "Cloud Events Test", "id" : "someCloudEventId", "time" : "2021-08-02T09:00:00Z", "datacontenttype" : "application/cloudevents+json", "data" : {"status": "completed"}}' -Uri 'http://localhost:3500/v1.0/publish/pubsub/deathStarStatus'

[willtsai]

Here's the $ curl (Bash) example that illustrates the Dapr app successfully receiving and processing the custom CloudEvent:

[yaron2]

Here's the $ curl (Bash) example that illustrates the Dapr app successfully receiving and processing the custom CloudEvent:

Not speaking for @msfussell, but I think that'll do the job.

[willtsai]

@msfussell -- do the above suggestions look good to you? If so, I can work on the changes and submit a PR for this. Thanks!

[msfussell]

Yes. This would be sufficient to add. Also ensure that there is a link to the quickstarts.

[willtsai]

Thanks @msfussell @yaron2 - here's the PR. Note that the link to quickstarts is already included in the Next steps section in that page.

#1892

[greenie-msft]

Docs PR merged: #1892

Closing issue.