google-cloud-storage overview (2.9.3)

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A client for Cloud Storage - Unified object storage.

Here's a simple usage example for using google-cloud from App/Compute Engine. This example shows how to create a Storage blob. For the complete source code see CreateBlob.java.

Storagestorage=StorageOptions.getDefaultInstance().getService();BlobIdblobId=BlobId.of("bucket","blob_name");BlobInfoblobInfo=BlobInfo.newBuilder(blobId).setContentType("text/plain").build();Blobblob=storage.create(blobInfo,"Hello, Cloud Storage!".getBytes(UTF_8));

This second example shows how to update the blob's content if the blob exists. For the complete source code see UpdateBlob.java.

Storagestorage=StorageOptions.getDefaultInstance().getService();BlobIdblobId=BlobId.of("bucket","blob_name");Blobblob=storage.get(blobId);if(blob!=null){byte[]prevContent=blob.getContent();System.out.println(newString(prevContent,UTF_8));WritableByteChannelchannel=blob.writer();channel.write(ByteBuffer.wrap("Updated content".getBytes(UTF_8)));channel.close();}

When using google-cloud from outside of App/Compute Engine, you have to specify a project ID and provide credentials. See Also: Google Cloud Storage

A testing helper for Google Cloud Storage.

A simple usage example:

Before the test:

RemoteStorageHelperhelper=RemoteStorageHelper.create();Storagestorage=helper.getOptions().getService();Stringbucket=RemoteStorageHelper.generateBucketName();storage.create(BucketInfo.of(bucket));

After the test:

RemoteStorageHelper.forceDelete(storage,bucket,5,TimeUnit.SECONDS);

See Also: Google Cloud Java tools for testing

The interfaces provided are listed below, along with usage samples.

StorageClient

Service Description: ## API Overview and Naming Syntax

The Cloud Storage gRPC API allows applications to read and write data through the abstractions of buckets and objects. For a description of these abstractions please see https://cloud.google.com/storage/docs.

Resources are named as follows: - Projects are referred to as they are defined by the Resource Manager API, using strings like projects/123456 or projects/my-string-id. - Buckets are named using string names of the form: projects/{project}/buckets/{bucket} For globally unique buckets, _ may be substituted for the project. - Objects are uniquely identified by their name along with the name of the bucket they belong to, as separate strings in this API. For example:

ReadObjectRequest { bucket: 'projects/_/buckets/my-bucket' object: 'my-object' } Note that object names can contain / characters, which are treated as any other character (no special directory semantics).

Sample for StorageClient:

// This snippet has been automatically generated for illustrative purposes only.// It may require modifications to work in your environment.try(StorageClientstorageClient=StorageClient.create()){BucketNamename=BucketName.of("[PROJECT]","[BUCKET]");storageClient.deleteBucket(name);}