Update gcloud-java/datastore to use the v1 API

[eddavisson]

The v1 API is now available.

The protos are identical (just a different package name). The only behavioral change is captured in the release notes:
https://cloud.google.com/datastore/release-notes

[mziccard]

Hi @eddavisson, thanks for the updated.

I started working on the update but I cannot get the datastore emulator to work with the new release. Is there an emulator that works with the v1 API? I tried what I believe to be the latest datastore emulator (cloud-datastore-emulator-1.1.1.zip) but it's returning 404 for requests to the v1 endpoints (as /v1/projects/<myproject>:<operation>), while it works for v1beta3 endpoints (as /v1beta3/projects/<myproject>:<operation>). /cc @pcostell

Also I believe that we must remove the /datastore part from the localhost endpoint (see DatastoreFactory.buildProjectEndpoint) as new emulators seem to no longer use it.

[eddavisson]

I've uploaded cloud-datastore-emulator-1.2.0.zip. Can you see if that works?

You're also correct that you'll need to drop /datastore from the localhost endpoint. We're making a similar update to our low-level library.

[mziccard]

I've uploaded cloud-datastore-emulator-1.2.0.zip. Can you see if that works?

I'll try it immediately.

You're also correct that you'll need to drop /datastore from the localhost endpoint. We're making a similar update to our low-level library.

Yes I meant you should change that in your layer :) Can you ping me when a new artifact is out with that change?

[mziccard]

@eddavisson cloud-datastore-emulator-1.2.0.zip seems to work fine, provided that you remove the extra /datastore from the endpoint. Any idea when this will be included in gcloud?

[eddavisson]

datastore-v1-proto-client:1.1.0 will remove /datastore. That should be available in Maven in the next couple of hours.

The gcloud update will take a little longer. We're targeting some time next week.

[mziccard]

@eddavisson cloud-datastore-emulator-1.2.0 is failing to run on Java7 with the following error:

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/google/cloud/datastore/emulator/CloudDatastore : Unsupported major.minor version 52.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)

This is usually a problem with code generation, can you look into it please? FYI previous version (1.1.1) used to work just fine.

[eddavisson]

I've re-uploaded a fixed version of the tool to GCS. Can you see if it works now?

[mziccard]

@eddavisson it works just fine now, thanks!