https://github.com/lizrice/hello-cloudevents

A very quick demonstration of CloudEvents
https://github.com/lizrice/hello-cloudevents

cloudevents kubernetes

Last synced: 8 days ago
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A very quick demonstration of CloudEvents

• Host: GitHub
• URL: https://github.com/lizrice/hello-cloudevents
• Owner: lizrice
• License: apache-2.0
• Created: 2019-09-10T08:28:59.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2019-09-17T08:13:46.000Z (about 5 years ago)
• Last Synced: 2024-10-12T12:21:42.672Z (about 1 month ago)
• Topics: cloudevents, kubernetes
• Language: Go
• Homepage:
• Size: 10.4 MB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# hello-cloudevents

CloudEvents is a common format for events. This is a very simple demo showing how you can pass an event through an event gateway. 

## Executables

These use https://github.com/cloudevents/sdk-go. 

`receiver` receives an event

`sender` generates an event

Depending on environment variables `sender` can send directly to receiver, or via an event gateway. 

Build with ```GOOS=linux go build .``` run in `sender` and `receiver` directories. 

## Set up the event gateway

The `yaml` directory has YAML for etcd and the event-gateway (which uses etcd for storage). 

## Event Gateway API

[API documentation](https://github.com/serverless/event-gateway/blob/master/docs/api.md)

* Get EVENT_GATEWAY_IP from the IP address of event-gateway Kubernetes service.

* Create an event type called aquaEvent:

`curl --request POST --url http://$EVENT_GATEWAY_IP:4001/v1/spaces/default/eventtypes --header 'content-type: application/json' --data '{"name": "aquaEvent"}'`

* Register the receiver function which runs on the local machine

`curl --request POST --url http://$EVENT_GATEWAY_IP:4001/v1/spaces/default/functions --header 'content-type: application/json' --data '{"functionId": "receiver", "type": "http", "provider":{"url":"http://172.28.128.3:8080"}}'`

* Subscribe the function to the event

`curl --request POST --url http://$EVENT_GATEWAY_IP:4001/v1/spaces/default/subscriptions --header 'content-type: application/json' --data '{"functionId": "receiver", "event": "http", "type":"async", "eventType": "aquaEvent", "path": "/hello", "method": "POST"}'`

* Get event types

`curl --url http://$EVENT_GATEWAY_IP:4001/v1/spaces/default/eventtypes | jq`

* Get subscriptions

`curl --url http://$EVENT_GATEWAY_IP:4001/v1/spaces/default/subscriptions | jq`

* Get functions

`curl --url http://$EVENT_GATEWAY_IP:4001/v1/spaces/default/functions | jq`