[Storage] Bucket lock (#3574)

google-cloud-clients/google-cloud-contrib/google-cloud-nio/src/main/java/com/google/cloud/storage/contrib/nio/testing/FakeStorageRpc.java

@@ -65,6 +65,7 @@
  *   <li>createBatch
  *   <li>checksums, etags
  *   <li>IAM operations</li>
+ *   <li>BucketLock operations</li>
  *   </ul>
  * </ul>
  */
@@ -520,6 +521,11 @@ public Notification createNotification(String bucket, Notification notification)
     throw new UnsupportedOperationException();
   }
 
+  @Override
+  public Bucket lockRetentionPolicy(Bucket bucket, Map<Option, ?> options) {
+    throw new UnsupportedOperationException();
+  }
+
   @Override
   public ServiceAccount getServiceAccount(String projectId) {
     return null;

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/Blob.java

@@ -402,13 +402,30 @@ Builder setCustomerEncryption(CustomerEncryption customerEncryption) {
       return this;
     }
 
-    @GcpLaunchStage.Beta
     @Override
     Builder setKmsKeyName(String kmsKeyName) {
       infoBuilder.setKmsKeyName(kmsKeyName);
       return this;
     }
 
+    @Override
+    public Builder setEventBasedHold(Boolean eventBasedHold) {
+      infoBuilder.setEventBasedHold(eventBasedHold);
+      return this;
+    }
+
+    @Override
+    public Builder setTemporaryHold(Boolean temporaryHold) {
+      infoBuilder.setTemporaryHold(temporaryHold);
+      return this;
+    }
+
+    @Override
+    Builder setRetentionExpirationTime(Long retentionExpirationTime) {
+      infoBuilder.setRetentionExpirationTime(retentionExpirationTime);
+      return this;
+    }
+
     @Override
     public Blob build() {
       return new Blob(storage, infoBuilder);

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/BlobInfo.java

@@ -85,6 +85,9 @@ public StorageObject apply(BlobInfo blobInfo) {
   private final boolean isDirectory;
   private final CustomerEncryption customerEncryption;
   private final String kmsKeyName;
+  private final Boolean eventBasedHold;
+  private final Boolean temporaryHold;
+  private final Long retentionExpirationTime;
 
   /**
    * This class is meant for internal use only. Users are discouraged from using this class.
@@ -268,12 +271,19 @@ public abstract static class Builder {
 
     abstract Builder setCustomerEncryption(CustomerEncryption customerEncryption);
 
+    abstract Builder setKmsKeyName(String kmsKeyName);
+
     /**
-     *
-     * Sets the blob's kmsKeyName.
+     * Sets the blob's event based hold.
      */
-    @GcpLaunchStage.Beta
-    abstract Builder setKmsKeyName(String kmsKeyName);
+    public abstract Builder setEventBasedHold(Boolean eventBasedHold);
+
+    /**
+     * Sets the blob's temporary hold.
+     */
+    public abstract Builder setTemporaryHold(Boolean temporaryHold);
+
+    abstract Builder setRetentionExpirationTime(Long retentionExpirationTime);
 
     /**
      * Creates a {@code BlobInfo} object.
@@ -308,6 +318,9 @@ static final class BuilderImpl extends Builder {
     private CustomerEncryption customerEncryption;
     private StorageClass storageClass;
     private String kmsKeyName;
+    private Boolean eventBasedHold;
+    private Boolean temporaryHold;
+    private Long retentionExpirationTime;
 
     BuilderImpl(BlobId blobId) {
       this.blobId = blobId;
@@ -339,6 +352,9 @@ static final class BuilderImpl extends Builder {
       isDirectory = blobInfo.isDirectory;
       storageClass = blobInfo.storageClass;
       kmsKeyName = blobInfo.kmsKeyName;
+      eventBasedHold = blobInfo.eventBasedHold;
+      temporaryHold = blobInfo.temporaryHold;
+      retentionExpirationTime = blobInfo.retentionExpirationTime;
     }
 
     @Override
@@ -486,13 +502,30 @@ Builder setCustomerEncryption(CustomerEncryption customerEncryption) {
       return this;
     }
 
-    @GcpLaunchStage.Beta
     @Override
     Builder setKmsKeyName(String kmsKeyName) {
       this.kmsKeyName = kmsKeyName;
       return this;
     }
 
+    @Override
+    public Builder setEventBasedHold(Boolean eventBasedHold) {
+      this.eventBasedHold = eventBasedHold;
+      return this;
+    }
+
+    @Override
+    public Builder setTemporaryHold(Boolean temporaryHold) {
+      this.temporaryHold = temporaryHold;
+      return this;
+    }
+
+    @Override
+    Builder setRetentionExpirationTime(Long retentionExpirationTime) {
+      this.retentionExpirationTime = retentionExpirationTime;
+      return this;
+    }
+
     @Override
     public BlobInfo build() {
       checkNotNull(blobId);
@@ -526,6 +559,9 @@ public BlobInfo build() {
     isDirectory = firstNonNull(builder.isDirectory, Boolean.FALSE);
     storageClass = builder.storageClass;
     kmsKeyName = builder.kmsKeyName;
+    eventBasedHold = builder.eventBasedHold;
+    temporaryHold = builder.temporaryHold;
+    retentionExpirationTime = builder.retentionExpirationTime;
   }
 
     /**
@@ -759,11 +795,31 @@ public StorageClass getStorageClass() {
   /**
    * Returns the Cloud KMS key used to encrypt the blob, if any.
    */
-  @GcpLaunchStage.Beta
   public String getKmsKeyName() {
     return kmsKeyName;
   }
 
+  /**
+   * Returns the event based hold status of the blob, if any.
+   */
+  public Boolean getEventBasedHold() {
+    return eventBasedHold;
+  }
+
+  /**
+   * Returns the temporary hold status of the blob, if any.
+   */
+  public Boolean getTemporaryHold() {
+    return temporaryHold;
+  }
+
+  /**
+   * Returns the retention expiration time of the blob, if a retention period is defined.
+   */
+  public Long getRetentionExpirationTime() {
+    return retentionExpirationTime;
+  }
+
   /**
    * Returns a builder for the current blob.
    */
@@ -836,8 +892,13 @@ public ObjectAccessControl apply(Acl acl) {
     if (customerEncryption != null) {
       storageObject.setCustomerEncryption(customerEncryption.toPb());
     }
+    if (retentionExpirationTime != null) {
+      storageObject.setRetentionExpirationTime(new DateTime(retentionExpirationTime));
+    }
 
     storageObject.setKmsKeyName(kmsKeyName);
+    storageObject.setEventBasedHold(eventBasedHold);
+    storageObject.setTemporaryHold(temporaryHold);
     storageObject.setMetadata(pbMetadata);
     storageObject.setCacheControl(cacheControl);
     storageObject.setContentEncoding(contentEncoding);
@@ -971,6 +1032,15 @@ public Acl apply(ObjectAccessControl objectAccessControl) {
     if (storageObject.getKmsKeyName() != null) {
       builder.setKmsKeyName(storageObject.getKmsKeyName());
     }
+    if (storageObject.getEventBasedHold() != null) {
+      builder.setEventBasedHold(storageObject.getEventBasedHold());
+    }
+    if (storageObject.getTemporaryHold() != null) {
+      builder.setTemporaryHold(storageObject.getTemporaryHold());
+    }
+    if (storageObject.getRetentionExpirationTime() != null) {
+      builder.setRetentionExpirationTime(storageObject.getRetentionExpirationTime().getValue());
+    }
     return builder.build();
   }
 }

google-cloud-clients/google-cloud-storage/src/main/java/com/google/cloud/storage/Bucket.java

@@ -628,13 +628,36 @@ public Builder setLabels(Map<String, String> labels) {
       return this;
     }
 
-    @GcpLaunchStage.Beta
     @Override
     public Builder setDefaultKmsKeyName(String defaultKmsKeyName) {
       infoBuilder.setDefaultKmsKeyName(defaultKmsKeyName);
       return this;
     }
 
+    @Override
+    public Builder setDefaultEventBasedHold(Boolean defaultEventBasedHold) {
+      infoBuilder.setDefaultEventBasedHold(defaultEventBasedHold);
+      return this;
+    }
+
+    @Override
+    Builder setRetentionEffectiveTime(Long retentionEffectiveTime) {
+      infoBuilder.setRetentionEffectiveTime(retentionEffectiveTime);
+      return this;
+    }
+
+    @Override
+    Builder setRetentionPolicyIsLocked(Boolean retentionIsLocked) {
+      infoBuilder.setRetentionPolicyIsLocked(retentionIsLocked);
+      return this;
+    }
+
+    @Override
+    public Builder setRetentionPeriod(Long retentionPeriod) {
+      infoBuilder.setRetentionPeriod(retentionPeriod);
+      return this;
+    }
+
     @Override
     public Bucket build() {
       return new Bucket(storage, infoBuilder);
@@ -1111,6 +1134,29 @@ public List<Acl> listDefaultAcls() {
     return storage.listDefaultAcls(getName());
   }
 
+  /**
+   * Locks bucket retention policy. Requires a local metageneration value in the request. Review example below.
+   *
+   * <p>Accepts an optional userProject {@link BucketTargetOption} option which defines the project id
+   * to assign operational costs.
+   *
+   * <p>Warning: Once a retention policy is locked, it can't be unlocked, removed, or shortened.
+   *
+   * <p>Example of locking a retention policy on a bucket, only if its local metageneration value matches the bucket's
+   * service metageneration otherwise a {@link StorageException} is thrown.
+   * <pre> {@code
+   * String bucketName = "my_unique_bucket";
+   * Bucket bucket = storage.get(bucketName, BucketGetOption.fields(BucketField.METAGENERATION));
+   * storage.lockRetentionPolicy(bucket, BucketTargetOption.metagenerationMatch());
+   * }</pre>
+   *
+   * @return a {@code Bucket} object of the locked bucket
+   * @throws StorageException upon failure
+   */
+  public Bucket lockRetentionPolicy(BucketTargetOption... options) {
+    return storage.lockRetentionPolicy(this, options);
+  }
+
   /**
    * Returns the bucket's {@code Storage} object used to issue requests.
    */