Examples with Blob com.google.cloud.storage.Blob used on opensource projects

Example 71 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class StorageSnippets method batch.

/**
   * Example of using a batch request to delete, update and get a blob.
   */
// [TARGET batch()]
// [VARIABLE "my_unique_bucket"]
// [VARIABLE "my_blob_name1"]
// [VARIABLE "my_blob_name2"]
public Blob batch(String bucketName, String blobName1, String blobName2) {
    // [START batch]
    StorageBatch batch = storage.batch();
    BlobId firstBlob = BlobId.of(bucketName, blobName1);
    BlobId secondBlob = BlobId.of(bucketName, blobName2);
    batch.delete(firstBlob).notify(new BatchResult.Callback<Boolean, StorageException>() {

        public void success(Boolean result) {
        // deleted successfully
        }

        public void error(StorageException exception) {
        // delete failed
        }
    });
    batch.update(BlobInfo.newBuilder(secondBlob).setContentType("text/plain").build());
    StorageBatchResult<Blob> result = batch.get(secondBlob);
    batch.submit();
    // returns get result or throws StorageException
    Blob blob = result.get();
    // [END batch]
    return blob;
}

Example 72 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class StorageSnippets method batchUpdate.

/**
   * Example of updating information on several blobs using a single batch request.
   */
// [TARGET update(BlobInfo...)]
// [VARIABLE "my_unique_bucket"]
// [VARIABLE "my_blob_name1"]
// [VARIABLE "my_blob_name2"]
public List<Blob> batchUpdate(String bucketName, String blobName1, String blobName2) {
    // [START batchUpdate]
    Blob firstBlob = storage.get(bucketName, blobName1);
    Blob secondBlob = storage.get(bucketName, blobName2);
    List<Blob> updatedBlobs = storage.update(firstBlob.toBuilder().setContentType("text/plain").build(), secondBlob.toBuilder().setContentType("text/plain").build());
    // [END batchUpdate]
    return updatedBlobs;
}

Example 73 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class StorageSnippets method getBlobFromIdWithMetageneration.

/**
   * Example of getting information on a blob, only if its metageneration matches a value,
   * otherwise a {@link StorageException} is thrown.
   */
// [TARGET get(BlobId, BlobGetOption...)]
// [VARIABLE "my_unique_bucket"]
// [VARIABLE "my_blob_name"]
// [VARIABLE 42]
public Blob getBlobFromIdWithMetageneration(String bucketName, String blobName, long blobMetageneration) {
    // [START getBlobFromIdWithMetageneration]
    BlobId blobId = BlobId.of(bucketName, blobName);
    Blob blob = storage.get(blobId, BlobGetOption.metagenerationMatch(blobMetageneration));
    // [END getBlobFromIdWithMetageneration]
    return blob;
}

Example 74 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class BlobSnippets method moveTo.

/**
   * Example of moving a blob to a different bucket with a different name.
   */
// [TARGET copyTo(String, String, BlobSourceOption...)]
// [VARIABLE "my_unique_bucket"]
// [VARIABLE "move_blob_name"]
public Blob moveTo(String destBucket, String destBlob) {
    // [START storageMoveFile]
    CopyWriter copyWriter = blob.copyTo(destBucket, destBlob);
    Blob copiedBlob = copyWriter.getResult();
    boolean deleted = blob.delete();
    // [END storageMoveFile]
    if (deleted) {
        return copiedBlob;
    } else {
        return null;
    }
}

Example 75 with Blob

use of com.google.cloud.storage.Blob in project google-cloud-java by GoogleCloudPlatform.

the class BlobSnippets method update.

/**
   * Example of replacing blob's metadata.
   */
// [TARGET update(BlobTargetOption...)]
public Blob update() {
    // [START update]
    Map<String, String> newMetadata = new HashMap<>();
    newMetadata.put("key", "value");
    blob.toBuilder().setMetadata(null).build().update();
    Blob updatedBlob = blob.toBuilder().setMetadata(newMetadata).build().update();
    // [END update]
    return updatedBlob;
}