问Google函数java.lang.NoClassDefFoundError同时遵循示例代码

EN

我尝试用存储触发器测试gcloud函数。gcloud函数应该调用一个公共的gcloud服务，但需要身份验证。我可以在本地执行这个函数，没有任何问题。但是在gcloud上，我可以在函数日志中找到一个NoClassDefFoundError。

执行失败: io/opencensus/trace/propagation/TextFormat$Setter at com.google.api.client.http.HttpRequest.(HttpRequest.java:203) at com.google.api.client.http.HttpTransport.buildRequest(HttpTransport.java:115) at com.google.api.client.http.HttpRequestFactory.buildRequest(HttpRequestFactory.java:86) at com.google.api.client.http.HttpRequestFactory.buildGetRequest(HttpRequestFactory.java:117) at com.google.auth.oauth2.ComputeEngineCredentials.runningOnComputeEngine(ComputeEngineCredentials.java:285)在com.google.auth.oauth2.DefaultCredentialsProvider.tryGetComputeCredentials(DefaultCredentialsProvider.java:314) at com.google.auth.oauth2.DefaultCredentialsProvider.getDefaultCredentialsUnsynchronized(DefaultCredentialsProvider.java:223) at com.google.auth.oauth2.DefaultCredentialsProvider.getDefaultCredentials(DefaultCredentialsProvider.java:126) at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:124) at com.google.auth.oauth2.GoogleCredentials.getApplicationDefault(GoogleCredentials.java:96) at functions.HelloGcs.makeGetRequest(HelloGcs.java:44) at functions.HelloGcs.accept(HelloGcs.com.google.cloud.functions.invoker.BackgroundFunctionExecutor$TypedFunctionExecutor.serviceLegacyEvent(BackgroundFunctionExecutor.java:285)，com.google.cloud.functions.invoker.BackgroundFunctionExecutor.lambda$serviceLegacyEvent$8(BackgroundFunctionExecutor.java:375)，com.google.cloud.functions.invoker.BackgroundFunctionExecutor.runWithContextClassLoader(BackgroundFunctionExecutor.java:382)，com.google.cloud.functions.invoker.BackgroundFunctionExecutor.serviceLegacyEvent(BackgroundFunctionExecutor.java:375)，com.google.cloud.functions.invoker.BackgroundFunctionExecutor.service(BackgroundFunctionExecutor.java：，functions.HelloGcs.accept(HelloGcs.java:21)在javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:755) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:547) at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1297) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)在org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:485) at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1212) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at com.google.cloud.functions.invoker.runner.Invoker$NotFoundHandler.handle(org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) at org.eclipse.jetty.server.Server.handle(Server.java:500) at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383) at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:547) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java：在org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:117) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313) at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129) at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:388) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806) at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938) at java.base/java.lang.Thread.run(Thread.java:829)引起的tryProduce(EatWhatYouKill.java:171)io.opencensus.trace.propagation.TextFormat$Setter : java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) . 47

设置：

如您所见，我从这里使用了云触发器java示例代码：https://cloud.google.com/functions/docs/calling/storage?hl=de#functions-calling-storage-java

我从这里通过一个静态函数扩展了代码：https://cloud.google.com/run/docs/authenticating/service-to-service#acquire-token

最后一个演示类的代码：

package functions;

import com.google.cloud.functions.BackgroundFunction;
import com.google.cloud.functions.Context;
import functions.eventpojos.GcsEvent;

import java.io.IOException;
import java.util.logging.Logger;

import com.google.api.client.http.GenericUrl;
import com.google.api.client.http.HttpRequest;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.auth.http.HttpCredentialsAdapter;
import com.google.auth.oauth2.GoogleCredentials;
import com.google.auth.oauth2.IdTokenCredentials;
import com.google.auth.oauth2.IdTokenProvider;


public class HelloGcs implements BackgroundFunction<GcsEvent> {
    private static final Logger logger = Logger.getLogger(HelloGcs.class.getName());

    private static final String PATH = "https://demo/api/smoke";

    @Override
    public void accept(GcsEvent event, Context context) {
        logger.info("Event: " + context.eventId());
        logger.info("Event Type: " + context.eventType());
        logger.info("Bucket: " + event.getBucket());
        logger.info("File: " + event.getName());
        logger.info("Metageneration: " + event.getMetageneration());
        logger.info("Created: " + event.getTimeCreated());
        logger.info("Updated: " + event.getUpdated());
        logger.info("Call: " + PATH);
        try {
            makeGetRequest(PATH);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

      public static HttpResponse makeGetRequest(String serviceUrl) throws IOException {
        GoogleCredentials credentials = GoogleCredentials.getApplicationDefault();
        if (!(credentials instanceof IdTokenProvider)) {
          throw new IllegalArgumentException("Credentials are not an instance of IdTokenProvider.");
        }
        IdTokenCredentials tokenCredential =
            IdTokenCredentials.newBuilder()
                .setIdTokenProvider((IdTokenProvider) credentials)
                .setTargetAudience(serviceUrl)
                .build();

        GenericUrl genericUrl = new GenericUrl(serviceUrl);
        HttpCredentialsAdapter adapter = new HttpCredentialsAdapter(tokenCredential);
        HttpTransport transport = new NetHttpTransport();
        HttpRequest request = transport.createRequestFactory(adapter).buildGetRequest(genericUrl);
        return request.execute();
      }
}

示例代码是用

gcloud函数部署java-gcs-函数

-入境点functions.HelloGcs

-运行时java11

-内存512 memory

-触发器-资源YOUR_TRIGGER_BUCKET_NAME

-触发器-事件google.storage.object.finalize

函数的所有者是一个额外的服务帐户(如本文https://cloud.google.com/run/docs/authenticating/service-to-service章节“设置服务帐户”所述)

提前感谢，如有任何帮助将不胜感激。