Github user trixpan commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1016#discussion_r85244266
--- Diff:
nifi-nar-bundles/nifi-jmx-bundle/nifi-jmx-processors/src/main/java/org/apache/nifi/processors/jmx/GetJMX.java
---
@@ -0,0 +1,385 @@
+/*
+ * 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.jmx;
+
+import org.apache.nifi.annotation.behavior.InputRequirement;
+import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.components.PropertyValue;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.annotation.lifecycle.OnScheduled;
+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.processor.AbstractProcessor;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.OutputStreamCallback;
+import org.apache.nifi.processor.util.StandardValidators;
+
+import javax.json.Json;
+import javax.json.JsonBuilderFactory;
+import javax.management.MBeanAttributeInfo;
+import javax.management.MBeanInfo;
+import javax.management.MBeanServerConnection;
+import javax.management.ObjectName;
+import javax.management.remote.JMXConnector;
+import javax.management.remote.JMXConnectorFactory;
+import javax.management.remote.JMXServiceURL;
+import javax.management.ReflectionException;
+import javax.management.InstanceNotFoundException;
+import javax.management.IntrospectionException;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import java.util.Map;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Hashtable;
+import java.util.ListIterator;
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+@Tags({"JMX"})
+@InputRequirement(Requirement.INPUT_FORBIDDEN)
+@SeeAlso({})
+@CapabilityDescription(
+ "Connects to the JMX RMI Url on the configured hostname and port.
"
+ + "All domains are queried and can be filtered by
providing the full domain name "
+ + "and optional MBean type as whitelist or blacklist
parameters.\n\n"
+ + "Blacklist example to exclude all types that start with
'Memory' and GarbageCollector from the "
+ + "java.lang domain and everything from the
java.util.logging domain:"
+ + "\n\njava.lang:Memory.*
GarbageCollector,java.util.logging")
+public class GetJMX extends AbstractProcessor {
+
+ public static final PropertyDescriptor HOSTNAME = new
PropertyDescriptor
+ .Builder().name("Hostname")
+ .description("The JMX Hostname or IP address")
+ .required(true)
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor PORT = new PropertyDescriptor
+ .Builder().name("Port")
+ .description("The JMX Port")
+ .required(true)
+ .addValidator(StandardValidators.PORT_VALIDATOR)
+ .build();
+
+ public static final PropertyDescriptor WHITELIST = new
PropertyDescriptor
+ .Builder().name("DomainWhiteList")
+ .description("Include only these MBean domain(s) and type(s).
Domains are comma delimited "
+ + "and optional MBean types follow a colon and are
space delimited. "
+ + "Format: [domain1[:type1[ type2]][,domain2]]")
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .required(false)
+ .build();
+
+ public static final PropertyDescriptor BLACKLIST = new
PropertyDescriptor
+ .Builder().name("DomainBlackList")
+ .description("Include everything excluding these MBean
domain(s) and type(s). Domains are "
+ + "comma delimited and optional MBean types follow a
colon and are space delimited. "
+ + "Format: [domain1[:type1[ type2]][,domain2]])")
+ .addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
+ .required(false)
+ .build();
+
+ public static final PropertyDescriptor POLLING_INTERVAL = new
PropertyDescriptor.Builder()
+ .name("Polling Interval")
+ .description("Indicates how long to wait before performing a
directory listing")
+ .required(true)
+ .addValidator(StandardValidators.TIME_PERIOD_VALIDATOR)
+ .defaultValue("300 sec")
+ .build();
+
+ public static final PropertyDescriptor BATCH_SIZE = new
PropertyDescriptor.Builder()
+ .name("Batch Size")
+ .description("The maximum number of files to pull in each
iteration")
+ .required(true)
+ .addValidator(StandardValidators.POSITIVE_INTEGER_VALIDATOR)
+ .defaultValue("100")
+ .build();
+
+ public static final Relationship REL_SUCCESS = new
Relationship.Builder()
+ .name("success")
+ .description("All FlowFiles that are created are routed to
this relationship")
+ .build();
+
+ public static final Relationship REL_FAILURE = new
Relationship.Builder()
+ .name("failure")
+ .description("FlowFiles that encounter errors are routed to
this relationship")
+ .build();
+
+ private List<PropertyDescriptor> descriptors;
+
+ private Set<Relationship> relationships;
+ private final BlockingQueue<Record> queue = new
LinkedBlockingQueue<>();
+
+ private final Set<Record> inProcess = new HashSet<>(); // guarded
by queueLock
+ private final Set<Record> recentlyProcessed = new HashSet<>(); //
guarded by queueLock
+
+ private final Lock queueLock = new ReentrantLock();
+ private final Lock listingLock = new ReentrantLock();
+ private final AtomicLong queueLastUpdated = new AtomicLong(0L);
+
+ private final JsonBuilderFactory jsonBuilderFactory =
Json.createBuilderFactory(null);
+
+ private ListFilter whiteListFilter;
+ private ListFilter blackListFilter;
+
+ @Override
+ protected void init(final ProcessorInitializationContext context) {
--- End diff --
@olegz once gave me a hint that there's an issue with it since init()
method as well as few others are invoked more then once per life-cycle of a
processor (see https://issues.apache.org/jira/browse/NIFI-1318).
Consider using a static initializer
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