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https://issues.apache.org/jira/browse/NIFI-774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14659978#comment-14659978
]
ASF GitHub Bot commented on NIFI-774:
-------------------------------------
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/72#discussion_r36411552
--- Diff:
nifi/nifi-nar-bundles/nifi-aws-bundle/nifi-aws-processors/src/main/java/org/apache/nifi/processors/aws/s3/DeleteS3Object.java
---
@@ -0,0 +1,109 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.processors.aws.s3;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import com.amazonaws.AmazonServiceException;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.model.DeleteObjectRequest;
+import com.amazonaws.services.s3.model.DeleteVersionRequest;
+import org.apache.nifi.annotation.behavior.SupportsBatching;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.util.StandardValidators;
+
+@SupportsBatching
+@SeeAlso({PutS3Object.class})
+@Tags({"Amazon", "S3", "AWS", "Archive", "Delete"})
+@CapabilityDescription("Deletes FlowFiles on an Amazon S3 Bucket. " +
+ "And the FlowFiles are checked if exists or not before deleting.")
+public class DeleteS3Object extends AbstractS3Processor {
+
+ public static final PropertyDescriptor VERSION_ID = new
PropertyDescriptor.Builder()
+ .name("Version")
+ .description("The Version of the Object to delete")
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .expressionLanguageSupported(true)
+ .required(false)
+ .build();
+
+ public static final List<PropertyDescriptor> properties =
Collections.unmodifiableList(
+ Arrays.asList(KEY, BUCKET, ACCESS_KEY, SECRET_KEY,
CREDENTAILS_FILE, REGION, TIMEOUT,
+ FULL_CONTROL_USER_LIST, READ_USER_LIST,
WRITE_USER_LIST, READ_ACL_LIST, WRITE_ACL_LIST, OWNER));
+
+ @Override
+ protected List<PropertyDescriptor> getSupportedPropertyDescriptors() {
+ return properties;
+ }
+
+ @Override
+ protected PropertyDescriptor
getSupportedDynamicPropertyDescriptor(final String propertyDescriptorName) {
+ return new PropertyDescriptor.Builder()
+ .name(propertyDescriptorName)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .expressionLanguageSupported(true)
+ .dynamic(true)
+ .build();
+ }
+
+ public void onTrigger(final ProcessContext context, final
ProcessSession session) {
+ FlowFile flowFile = session.get();
+ if (flowFile == null) {
+ return;
+ }
+
+ final long startNanos = System.nanoTime();
+
+ final String bucket =
context.getProperty(BUCKET).evaluateAttributeExpressions(flowFile).getValue();
+ final String key =
context.getProperty(KEY).evaluateAttributeExpressions(flowFile).getValue();
+ final String versionId =
context.getProperty(VERSION_ID).evaluateAttributeExpressions(flowFile).getValue();
+
+ final AmazonS3 s3 = getClient();
+ try {
+ // Checks if the key exists or not
+ // If there is no such a key, then throws a exception
+ s3.getObjectMetadata(bucket, key);
+
+ // Deletes a key on Amazon S3
+ if (versionId == null) {
+ final DeleteObjectRequest r = new
DeleteObjectRequest(bucket, key);
+ s3.deleteObject(r);
+ } else {
+ final DeleteVersionRequest r = new
DeleteVersionRequest(bucket, key, versionId);
+ s3.deleteVersion(r);
+ }
+ } catch (final AmazonServiceException ase) {
+ getLogger().error("Failed to delete S3 Object for {}; routing
to failure", new Object[]{flowFile, ase});
+ session.transfer(flowFile, REL_FAILURE);
+ return;
+ }
+
+ session.transfer(flowFile, REL_SUCCESS);
+ final long transferMillis =
TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNanos);
+ getLogger().info("Successfully delete S3 Object for {} in {}
millis; routing to success", new Object[]{flowFile, transferMillis});
+ session.getProvenanceReporter().receive(flowFile, "https://"; +
bucket + ".amazonaws.com/" + key, transferMillis);
--- End diff --
@danbress I am confused - this is telling AWS to delete the data, it is not
receiving any data, no?
> Create a DeleteS3Object Processor
> ---------------------------------
>
> Key: NIFI-774
> URL: https://issues.apache.org/jira/browse/NIFI-774
> Project: Apache NiFi
> Issue Type: Task
> Components: Extensions
> Reporter: Mark Payne
> Assignee: Yu Ishikawa
>
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