从 java spring boot 应用程序调用谷歌云函数

Question

I'm using google cloud functions with no problem in my mobile app using specific sdk for iOS and swift. For integrations reason I would now need to call one of my functions from a java springboot server.

I cannot find any example for that, does a specific client and example exist ?

I can find examples for other platform but not for java. Am I missing something ? can someone move me in the right direction ?

Thanks

Answer 1

You could simply do HTTP requests, that will trigger the cloud functions. Here is the documentation

Answer 2

GCP hasdocumentation regarding the authentication on Cloud Functions. Since you need to authenticate on a Cloud Function from a VM inside your GCP project, I recommend you to read this section .

As explained, you should get an Identity Token that can authenticate on Cloud Functions. You can fetch the token either from gcloud or the metadata server . After you have that in whatever format you can access it without compromising your credentials (eg environment variable, file outside the repository) just perform the HTTP request to the trigger of the function.

In the end you should have something like this:

cf_trigger = "https://<region>-<project_id>.cloudfunctions.net/<function_name>"
identity_token = "foo"

HttpRequest.newBuilder()
    .uri(URI.create(cf_trigger))
    .header("Authorization", "bearer " + identity_token)
    .build();