Unable to run on JVM 7

[bitmori]

In TraceGrpcApiService constructor, it explicitly use JavaTimestampFactory which uses java.time.Instant which is introduced since JDK8 and there is no easy way to replace it with jodaTimestampFactory.

[erikmcc]

This was a convenience implementation for what we believed would be the most common implementation options. It's probably easy enough to fork this code and make a service that uses the desired timestamp factory. But we could also provide an option or an override for the JodaTimestampFactory. We'll accept pull requests for this, if anyone is interested.

[codefromthecrypt]

You mean someone has asked to run the server on JVM 7?

On 8 Apr 2017 4:41 am, "Erik McClenney" [email protected] wrote:

This was a convenience implementation for what we believed would be the most common implementation options. It's probably easy enough to fork this code and make a service that uses the desired timestamp factory. But we could also provide an option or an override for the JodaTimestampFactory. We'll accept pull requests for this, if anyone is interested.

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[henrylawson]

App Engine Standard only supports JVM 7.

Can this SDK be used with App Engine Standard? What are the alternatives for implementing custom trace spans for App Engine Standard?

[ubschmidt2]

Ah, I see. App Engine Standard Environment is actually supported through https://github.com/GoogleCloudPlatform/cloud-trace-java/tree/master/services/appengine-standard-service. Just make sure that this dependency is on the classpath at runtime (and none of the other service implementations from https://github.com/GoogleCloudPlatform/cloud-trace-java/tree/master/services is).

The gRPC-based client doesn't work in the current App Engine Standard environment.

[henrylawson]

Thanks! The README focuses on the gRPC client. So wasn't clear there was another lib for standard.

For others who land here:

compile group: 'com.google.cloud.trace',    name: 'appengine-standard-service',      version: '0.3.2'

import com.google.cloud.trace.Tracer;
import com.google.cloud.trace.core.TraceContext;
import com.google.cloud.trace.service.AppEngineTraceService;

Tracer tracer = new AppEngineTraceService().getTracer();
TraceContext context = tracer.startSpan("test-span");
// ... code to trace here ...
tracer.endSpan(context);