Github user WilliamNouet commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2028#discussion_r191081383
--- Diff:
nifi-nar-bundles/nifi-morphlines-bundle/nifi-morphlines-processors/src/main/java/org/apache/nifi/processors/morphlines/ExecuteMorphline.java
---
@@ -0,0 +1,253 @@
+/*
+ * 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.morphlines;
+
+import org.apache.nifi.logging.ComponentLog;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.annotation.behavior.DynamicProperty;
+import org.apache.nifi.annotation.behavior.Restricted;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+import org.apache.nifi.processor.AbstractProcessor;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.StreamCallback;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.apache.nifi.stream.io.StreamUtils;
+import org.kitesdk.morphline.api.Command;
+import org.kitesdk.morphline.api.MorphlineContext;
+import org.kitesdk.morphline.api.Record;
+import org.kitesdk.morphline.base.Fields;
+import org.kitesdk.morphline.base.Compiler;
+import org.kitesdk.morphline.base.Notifications;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Set;
+import java.util.Iterator;
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.concurrent.atomic.AtomicLong;
+
+@Tags({"kitesdk", "morphlines", "ETL", "HDFS", "avro", "Solr", "HBase"})
+@CapabilityDescription("Executes Morphlines
(http://kitesdk.org/docs/1.1.0/morphlines/) framework, which performs in-memory
container of transformation "
+ + "commands in oder to perform tasks such as loading, parsing,
transforming, or otherwise processing a single record.")
+@DynamicProperty(name = "Relationship Name", value = "A Regular
Expression", supportsExpressionLanguage = true, description = "Adds the dynamic
property key and value "
+ + "as key-value pair to Morphlines content.")
+@Restricted("Provides operator the ability to read/write to any file that
NiFi has access to.")
+
+public class ExecuteMorphline extends AbstractProcessor {
+ public static final PropertyDescriptor MORPHLINES_ID = new
PropertyDescriptor
+ .Builder().name("Morphlines ID")
+ .description("Identifier of the morphlines context")
+ .required(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .expressionLanguageSupported(true)
+ .build();
+
+ public static final PropertyDescriptor MORPHLINES_FILE = new
PropertyDescriptor
+ .Builder().name("Morphlines File")
+ .description("File for the morphlines context")
+ .required(true)
+ .addValidator(StandardValidators.FILE_EXISTS_VALIDATOR)
+ .expressionLanguageSupported(true)
+ .build();
+
+ public static final PropertyDescriptor MORPHLINES_OUTPUT_FIELD = new
PropertyDescriptor
+ .Builder().name("Morphlines output field")
+ .description("Field name of output in Morphlines. Default is
'_attachment_body'.")
+ .required(false)
+ .defaultValue("_attachment_body")
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final Relationship REL_SUCCESS = new
Relationship.Builder()
+ .name("success")
+ .description("Relationship for success.")
+ .build();
+
+ public static final Relationship REL_FAILURE = new
Relationship.Builder()
+ .name("failure")
+ .description("Relationship for failure of morphlines.")
+ .build();
+
+ public static final Relationship REL_ORIGINAL = new
Relationship.Builder()
+ .name("original")
+ .description("Relationship for original flowfiles.")
+ .build();
+
+ private static final List<PropertyDescriptor> PROPERTIES =
ImmutableList.<PropertyDescriptor>builder()
+ .add(MORPHLINES_FILE)
+ .add(MORPHLINES_ID)
+ .add(MORPHLINES_OUTPUT_FIELD)
+ .build();
+
+ private static final Set<Relationship> RELATIONSHIPS =
ImmutableSet.<Relationship>builder()
+ .add(REL_SUCCESS)
+ .add(REL_FAILURE)
+ .build();
+
+ public PropertyValue morphlinesFileProperty;
+ public PropertyValue morphlinesIdProperty;
+ public PropertyValue morphlinesOutputFieldProperty;
+ public Map<String, PropertyValue> dynamicPropertyMap = new HashMap();
+
+ @Override
+ public Set<Relationship> getRelationships() {
+ return RELATIONSHIPS;
+ }
+
+ @Override
+ public final List<PropertyDescriptor>
getSupportedPropertyDescriptors() {
+ return PROPERTIES;
+ }
+
+ @Override
+ protected PropertyDescriptor
getSupportedDynamicPropertyDescriptor(final String propertyDescriptorName) {
+ return new PropertyDescriptor.Builder()
+ .required(false)
+ .name(propertyDescriptorName)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .dynamic(true)
+ .expressionLanguageSupported(true)
+ .build();
+ }
+
+ @OnScheduled
+ public void onScheduled(ProcessContext context) throws Exception {
+ morphlinesFileProperty = context.getProperty(MORPHLINES_FILE);
+ morphlinesIdProperty = context.getProperty(MORPHLINES_ID);
+ morphlinesOutputFieldProperty =
context.getProperty(MORPHLINES_OUTPUT_FIELD);
+ for (final PropertyDescriptor descriptor :
context.getProperties().keySet()) {
+ if (descriptor.isDynamic()) {
+ dynamicPropertyMap.put(descriptor.getName(),
context.getProperty(descriptor));
+ }
+ }
+ }
+
+ @Override
+ public void onTrigger(final ProcessContext context, final
ProcessSession session) throws ProcessException {
+ FlowFile flowFile = session.get();
+ if ( flowFile == null ) {
+ return;
+ }
+
+ FlowFile originalFlowFile = session.clone(flowFile);
+ final AtomicLong written = new AtomicLong(0L);
+ final byte[] value = new byte[(int) flowFile.getSize()];
--- End diff --
It depends on your definition of "big" files. I believe that is not in the
user interest to have big files (> 1 GB) being processed through the data flow
as most processors under perform with this kind of files. So I do not think it
is an issue here; I have seen the processor getting tremendous results on files
up to 0.5 GB.
---
