how to add a service account security definition in openapi yml file

问题

I want to add a security definition to an API to run it in the google cloud scheduler (using OIDC token, and a service account).My openapi.yml looks like this

"/common/test":
    post:
      description: "test"
      operationId: "test"
      responses:
        200:
          description: "Success"
        400:
          description: "Fail"
      security:
        - service_account: []  

securityDefinitions:
      service_account:
        authorizationUrl: ""
        flow: "implicit"
        type: "oauth2"
        x-google-issuer: "xx@example.iam.gserviceaccount.com"
        x-google-jwks_uri: "https://www.googleapis.com/robot/v1/metadata/x509/xx@example.iam.gserviceaccount.com"

but it fails when I called this API via cloud scheduler(using OIDC token, and a service account(xx@example.iam.gserviceaccount.com)). log view says unauthorized 401. How can I fix this error.

{httpRequest: {status: 401} insertId: "1r9kx9lf2jy71o" jsonPayload: { @type: "type.googleapis.com/google.cloud.scheduler.logging.AttemptFinished" jobName: "projects/project-xxx/locations/us-central1/jobs/test" status: "UNAUTHENTICATED" targetType: "HTTP" url: "https://project-xxx.appspot.com/common/test/"} logName: "projects/project-xxx/logs/cloudscheduler.googleapis.com%2Fexecutions" receiveTimestamp: "2020-01-06T06:30:01.000238320Z" resource: { labels: {…} type: "cloud_scheduler_job" }severity: "ERROR" timestamp: "2020-01-06T06:30:01.000238320Z"}

回答1:

OIDC (openConnectId) tokens, from Cloud Scheduler, are not compatible with Oauth2 authorization. OpenAPI v3 has added support for OIDC tokens.

来源：https://stackoverflow.com/questions/59578443/how-to-add-a-service-account-security-definition-in-openapi-yml-file