mn-fcm-client
Micronaut Sending Push Notification (ex. Google Firebase Cloud Messaging)
In this example we want to consume this service : https://firebase.google.com/docs/cloud-messaging/send-message
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Taking as a starting point this Spring Boot example : https://grokonez.com/spring-framework/spring-boot/firebase-cloud-messaging-server-spring-to-push-notification-example-spring-boot
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Porting the idea to the Micronaut framework : http://micronaut.io/
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Using the Micronaut HTTP Client : http://guides.micronaut.io/micronaut-http-client-groovy/guide/index.html
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Adding groovy as the JVM language, gradle as the building tool, and spock as the testing framework
FCM Setup
- Go to the Firebase website : https://firebase.google.com/
- Login using your Google account to access to the Console
- Add a project (for example "MN-FCM-TEST") to create a new one
- In the project dashboard, select "project settings" (gear icon in the left menu)
- Jump to the Cloud Messaging tab and copy the Legacy Server Key to the application.yml as your own SERVER_KEY
- Remember to configure your app for Android or iOS too
Micronaut Push Service
Test :
$ ./gradlew check
...
BUILD SUCCESSFUL in 0s
4 actionable tasks: 4 up-to-date
Start :
$ ./gradlew run
...
[main] INFO io.micronaut.runtime.Micronaut - Startup completed in 770ms. Server Running: http://localhost:8080
Request example :
curl -X POST -H "Content-Type: application/json" -d '{
"to" : "/topics/test",
"title": "TITLE",
"body": "BODY",
"data":
{
"Key-1": "VALUE 1",
"Key-2": "VALUE 2"
}
}'
http://localhost:8080/msg/pushResponse :
{
"message_id": "5548062101043273972"
}