Batch request with Google Storage Json Api (JAVA)

问题:

I'm attempting to set multiple ACLs in one batch request from appengine (JAVA). I am not sure what the URL should be for making the request. The documentation states "/batch". Are there anymore examples available? AFAIK this is not possible to test from the API explorer.

回答1:

Using the google-api-java-client library and the Storage JSON API, a batch request would look like this:

// Create the Storage service object
Storage storage = new Storage(httpTransport, jsonFactory, credential);

// Create a new batch request
BatchRequest batch = storage.batch();

// Add some requests to the batch request
storage.objectAccessControls().insert("bucket-name", "object-key1",
    new ObjectAccessControl().setEntity("user-123423423").setRole("READER"))
    .queue(batch, callback);
storage.objectAccessControls().insert("bucket-name", "object-key2",
    new ObjectAccessControl().setEntity("[e-mail]").setRole("READER"))
    .queue(batch, callback);
storage.objectAccessControls().insert("bucket-name", "object-key3",
    new ObjectAccessControl().setEntity("[e-mail]").setRole("OWNER"))
    .queue(batch, callback);

// Execute the batch request. The individual callbacks will be called when requests finish.
batch.execute();

Note that you'll have to request access to the Storage JSON API at the moment, as it's in limited beta.

Relevant API documentation is here: https://developers.google.com/storage/docs/json_api/v1/objectAccessControls

Documentation about batch requests in the Java client library: https://code.google.com/p/google-api-java-client/wiki/Batch

JavaDoc for the Storage Java client library: https://google-api-client-libraries.appspot.com/documentation/storage/v1beta1/java/latest/index.html