Running a native image on GCP (Cloud Run) throws error 400

Firebase Admin の依存関係宣言と、Cloud Run 上でネイティブイメージとして実行される Firebase Cloud Messaging クライアントから始め、報告されている JVM と native-image の動作を比較します。grpc-netty-shaded の除外と grpc-okhttp の置換を行った状態で 400 レスポンスを再現し、そのうえで問題がリクエストの構築にあるのか、native-image の設定にあるのかを判断します。サポートされる設定または最小限の再現可能な診断を文書化できれば完了です。

Hi,

Compiling to native this dependency:

<dependency>
      <groupId>com.google.firebase</groupId>
      <artifactId>firebase-admin</artifactId>
      <version>9.2.0</version>
</dependency>

makes the build fail because grpc-netty-shaded, however with this alternative we can compile:

<!-- FCM -->
    <dependency>
      <groupId>com.google.firebase</groupId>
      <artifactId>firebase-admin</artifactId>
      <version>9.2.0</version>
      <exclusions>
        <exclusion>
          <groupId>io.grpc</groupId>
          <artifactId>grpc-netty-shaded</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <!--Using OkHttp over netty because the shaded netty included in grpc does not work with native image-->
    <dependency>
      <groupId>io.grpc</groupId>
      <artifactId>grpc-okhttp</artifactId>
      <version>1.51.1</version>
    </dependency>

The problem is that FCM client always responds with error 400:

Exception in thread "main" com.google.firebase.messaging.FirebaseMessagingException: Unexpected HTTP response with status: 400
{
  "error": {
    "code": 400,
    "message": "Recipient of the message is not set.",
    "status": "INVALID_ARGUMENT",
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.BadRequest",
        "fieldViolations": [
          {
            "field": "message",
            "description": "Recipient of the message is not set."
          }
        ]
      },
      {
        "@type": "type.googleapis.com/google.firebase.fcm.v1.FcmError",
        "errorCode": "INVALID_ARGUMENT"
      }
    ]
  }
}

Running on JVM works fine.
There is a issue with same problem: https://github.com/GoogleCloudPlatform/native-image-support-java/issues/116 for the old google native support libraries. Their workarounds didn't work for me.

Are there any know solutions?
Thanks