org.apache.storm.utils.ConfigUtils Maven / Gradle / Ivy
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/**
* 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.storm.utils;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.apache.heron.api.Config;
import org.apache.storm.hooks.ITaskHookDelegate;
public final class ConfigUtils {
private ConfigUtils() {
}
/**
* Translate storm config to heron config for topology
* @param stormConfig the storm config
* @return a heron config
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public static Config translateConfig(Map stormConfig) {
Config heronConfig;
if (stormConfig != null) {
heronConfig = new Config((Map) stormConfig);
} else {
heronConfig = new Config();
}
// Look at serialization stuff first
doSerializationTranslation(heronConfig);
// Now look at supported apis
doStormTranslation(heronConfig);
doTaskHooksTranslation(heronConfig);
doTopologyLevelTranslation(heronConfig);
return heronConfig;
}
/**
* Translate storm config to heron config for components
* @param stormConfig the storm config
* @return a heron config
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public static Config translateComponentConfig(Map stormConfig) {
Config heronConfig;
if (stormConfig != null) {
heronConfig = new Config((Map) stormConfig);
} else {
heronConfig = new Config();
}
doStormTranslation(heronConfig);
return heronConfig;
}
private static void doSerializationTranslation(Config heronConfig) {
// Serialization config is handled by HeronPluggableSerializerDelegate therefore the storm
// configs are used here instead of translating to the Heron configs. Storm relies on Kryo but
// Heron abstracts serailizers differently. KryoSerializer is one of the PluggableSerializer.
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_FALL_BACK_ON_JAVA_SERIALIZATION)
&& (heronConfig.get(org.apache.storm.Config.TOPOLOGY_FALL_BACK_ON_JAVA_SERIALIZATION)
instanceof Boolean)
&& ((Boolean)
heronConfig.get(org.apache.storm.Config.TOPOLOGY_FALL_BACK_ON_JAVA_SERIALIZATION))) {
org.apache.heron.api.Config.setSerializationClassName(heronConfig,
"org.apache.heron.api.serializer.JavaSerializer");
} else {
heronConfig.put(org.apache.storm.Config.TOPOLOGY_FALL_BACK_ON_JAVA_SERIALIZATION, false);
org.apache.heron.api.Config.setSerializationClassName(heronConfig,
"org.apache.storm.serialization.HeronPluggableSerializerDelegate");
if (!heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_KRYO_FACTORY)) {
heronConfig.put(org.apache.storm.Config.TOPOLOGY_KRYO_FACTORY,
"org.apache.storm.serialization.DefaultKryoFactory");
} else if (!(heronConfig.get(org.apache.storm.Config.TOPOLOGY_KRYO_FACTORY)
instanceof String)) {
throw new RuntimeException(
org.apache.storm.Config.TOPOLOGY_KRYO_FACTORY + " has to be set to a class name");
}
if (!heronConfig.containsKey(
org.apache.storm.Config.TOPOLOGY_SKIP_MISSING_KRYO_REGISTRATIONS)) {
heronConfig.put(org.apache.storm.Config.TOPOLOGY_SKIP_MISSING_KRYO_REGISTRATIONS, false);
} else if (!(heronConfig.get(org.apache.storm.Config.TOPOLOGY_SKIP_MISSING_KRYO_REGISTRATIONS)
instanceof Boolean)) {
throw new RuntimeException(
org.apache.storm.Config.TOPOLOGY_SKIP_MISSING_KRYO_REGISTRATIONS
+ " has to be boolean");
}
}
}
/* We need to play a little dance here.
* task hooks are a list of class names that need to be invoked at various times during a topology run.
* However because Heron operates in org.apache world and Strom in org.apache.storm world, we
* pass a ITaskHookDelegate to Heron and remember the actual task hooks in an internal
* variable STORMCOMPAT_TOPOLOGY_AUTO_TASK_HOOKS
*/
private static void doTaskHooksTranslation(Config heronConfig) {
List hooks = heronConfig.getAutoTaskHooks();
if (hooks != null && !hooks.isEmpty()) {
heronConfig.put(org.apache.storm.Config.STORMCOMPAT_TOPOLOGY_AUTO_TASK_HOOKS, hooks);
List translationHooks = new LinkedList();
translationHooks.add(ITaskHookDelegate.class.getName());
heronConfig.setAutoTaskHooks(translationHooks);
}
}
/**
* Translate storm config into heron config. This funciton is used by both topology
* and component level config translations. Therefore NO config should be generated
* when a key does NOT exist if the key is for both topology and component.
* Otherwise the component config might overwrite the topolgy config with a wrong value.
* @param heron the heron config object to receive the results.
*/
private static void doStormTranslation(Config heronConfig) {
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_ENABLE_MESSAGE_TIMEOUTS)) {
heronConfig.put(org.apache.storm.Config.TOPOLOGY_ENABLE_MESSAGE_TIMEOUTS,
heronConfig.get(org.apache.storm.Config.TOPOLOGY_ENABLE_MESSAGE_TIMEOUTS).toString());
}
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_WORKERS)) {
Integer nWorkers = Utils.getInt(heronConfig.get(org.apache.storm.Config.TOPOLOGY_WORKERS));
org.apache.heron.api.Config.setNumStmgrs(heronConfig, nWorkers);
}
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_MESSAGE_TIMEOUT_SECS)) {
Integer nSecs =
Utils.getInt(heronConfig.get(org.apache.storm.Config.TOPOLOGY_MESSAGE_TIMEOUT_SECS));
org.apache.heron.api.Config.setMessageTimeoutSecs(heronConfig, nSecs);
}
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_MAX_SPOUT_PENDING)) {
Integer nPending =
Utils.getInt(
heronConfig.get(org.apache.storm.Config.TOPOLOGY_MAX_SPOUT_PENDING).toString());
org.apache.heron.api.Config.setMaxSpoutPending(heronConfig, nPending);
}
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_TICK_TUPLE_FREQ_SECS)) {
Integer tSecs =
Utils.getInt(
heronConfig.get(org.apache.storm.Config.TOPOLOGY_TICK_TUPLE_FREQ_SECS).toString());
org.apache.heron.api.Config.setTickTupleFrequency(heronConfig, tSecs);
}
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_DEBUG)) {
Boolean dBg =
Boolean.parseBoolean(heronConfig.get(org.apache.storm.Config.TOPOLOGY_DEBUG).toString());
org.apache.heron.api.Config.setDebug(heronConfig, dBg);
}
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_ENVIRONMENT)) {
org.apache.heron.api.Config.setEnvironment(heronConfig,
(Map) heronConfig.get(org.apache.storm.Config.TOPOLOGY_ENVIRONMENT));
}
}
/**
* Translate topology config.
* @param heron the heron config object to receive the results.
*/
private static void doTopologyLevelTranslation(Config heronConfig) {
if (heronConfig.containsKey(org.apache.storm.Config.TOPOLOGY_ACKER_EXECUTORS)) {
Integer nAckers =
Utils.getInt(heronConfig.get(org.apache.storm.Config.TOPOLOGY_ACKER_EXECUTORS));
if (nAckers > 0) {
org.apache.heron.api.Config.setTopologyReliabilityMode(heronConfig,
org.apache.heron.api.Config.TopologyReliabilityMode.ATLEAST_ONCE);
} else {
org.apache.heron.api.Config.setTopologyReliabilityMode(heronConfig,
org.apache.heron.api.Config.TopologyReliabilityMode.ATMOST_ONCE);
}
} else {
org.apache.heron.api.Config.setTopologyReliabilityMode(heronConfig,
org.apache.heron.api.Config.TopologyReliabilityMode.ATMOST_ONCE);
}
}
}
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