| /** |
| * 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.topology; |
| |
| import org.apache.storm.Config; |
| import org.apache.storm.generated.*; |
| import org.apache.storm.grouping.CustomStreamGrouping; |
| import org.apache.storm.grouping.PartialKeyGrouping; |
| import org.apache.storm.hooks.IWorkerHook; |
| import org.apache.storm.spout.CheckpointSpout; |
| import org.apache.storm.state.State; |
| import org.apache.storm.task.OutputCollector; |
| import org.apache.storm.task.TopologyContext; |
| import org.apache.storm.tuple.Fields; |
| import org.apache.storm.tuple.Tuple; |
| import org.apache.storm.utils.Utils; |
| import org.json.simple.JSONValue; |
| import org.json.simple.parser.ParseException; |
| |
| import java.io.NotSerializableException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.storm.windowing.TupleWindow; |
| import org.json.simple.JSONValue; |
| import static org.apache.storm.spout.CheckpointSpout.CHECKPOINT_COMPONENT_ID; |
| import static org.apache.storm.spout.CheckpointSpout.CHECKPOINT_STREAM_ID; |
| |
| /** |
| * TopologyBuilder exposes the Java API for specifying a topology for Storm |
| * to execute. Topologies are Thrift structures in the end, but since the Thrift API |
| * is so verbose, TopologyBuilder greatly eases the process of creating topologies. |
| * The template for creating and submitting a topology looks something like: |
| * |
| * ```java |
| * TopologyBuilder builder = new TopologyBuilder(); |
| * |
| * builder.setSpout("1", new TestWordSpout(true), 5); |
| * builder.setSpout("2", new TestWordSpout(true), 3); |
| * builder.setBolt("3", new TestWordCounter(), 3) |
| * .fieldsGrouping("1", new Fields("word")) |
| * .fieldsGrouping("2", new Fields("word")); |
| * builder.setBolt("4", new TestGlobalCount()) |
| * .globalGrouping("1"); |
| * |
| * Map conf = new HashMap(); |
| * conf.put(Config.TOPOLOGY_WORKERS, 4); |
| * |
| * StormSubmitter.submitTopology("mytopology", conf, builder.createTopology()); |
| * ``` |
| * |
| * Running the exact same topology in local mode (in process), and configuring it to log all tuples |
| * emitted, looks like the following. Note that it lets the topology run for 10 seconds |
| * before shutting down the local cluster. |
| * |
| * ```java |
| * TopologyBuilder builder = new TopologyBuilder(); |
| * |
| * builder.setSpout("1", new TestWordSpout(true), 5); |
| * builder.setSpout("2", new TestWordSpout(true), 3); |
| * builder.setBolt("3", new TestWordCounter(), 3) |
| * .fieldsGrouping("1", new Fields("word")) |
| * .fieldsGrouping("2", new Fields("word")); |
| * builder.setBolt("4", new TestGlobalCount()) |
| * .globalGrouping("1"); |
| * |
| * Map conf = new HashMap(); |
| * conf.put(Config.TOPOLOGY_WORKERS, 4); |
| * conf.put(Config.TOPOLOGY_DEBUG, true); |
| * |
| * LocalCluster cluster = new LocalCluster(); |
| * cluster.submitTopology("mytopology", conf, builder.createTopology()); |
| * Utils.sleep(10000); |
| * cluster.shutdown(); |
| * ``` |
| * |
| * The pattern for `TopologyBuilder` is to map component ids to components using the setSpout |
| * and setBolt methods. Those methods return objects that are then used to declare |
| * the inputs for that component. |
| */ |
| public class TopologyBuilder { |
| private Map<String, IRichBolt> _bolts = new HashMap<>(); |
| private Map<String, IRichSpout> _spouts = new HashMap<>(); |
| private Map<String, ComponentCommon> _commons = new HashMap<>(); |
| private boolean hasStatefulBolt = false; |
| |
| // private Map<String, Map<GlobalStreamId, Grouping>> _inputs = new HashMap<String, Map<GlobalStreamId, Grouping>>(); |
| |
| private Map<String, StateSpoutSpec> _stateSpouts = new HashMap<>(); |
| private List<ByteBuffer> _workerHooks = new ArrayList<>(); |
| |
| |
| public StormTopology createTopology() { |
| Map<String, Bolt> boltSpecs = new HashMap<>(); |
| Map<String, SpoutSpec> spoutSpecs = new HashMap<>(); |
| maybeAddCheckpointSpout(); |
| for(String boltId: _bolts.keySet()) { |
| IRichBolt bolt = _bolts.get(boltId); |
| bolt = maybeAddCheckpointTupleForwarder(bolt); |
| ComponentCommon common = getComponentCommon(boltId, bolt); |
| try{ |
| maybeAddCheckpointInputs(common); |
| boltSpecs.put(boltId, new Bolt(ComponentObject.serialized_java(Utils.javaSerialize(bolt)), common)); |
| }catch(RuntimeException wrapperCause){ |
| if (wrapperCause.getCause() != null && NotSerializableException.class.equals(wrapperCause.getCause().getClass())){ |
| throw new IllegalStateException( |
| "Bolt '" + boltId + "' contains a non-serializable field of type " + wrapperCause.getCause().getMessage() + ", " + |
| "which was instantiated prior to topology creation. " + wrapperCause.getCause().getMessage() + " " + |
| "should be instantiated within the prepare method of '" + boltId + " at the earliest.", wrapperCause); |
| } |
| throw wrapperCause; |
| } |
| } |
| for(String spoutId: _spouts.keySet()) { |
| IRichSpout spout = _spouts.get(spoutId); |
| ComponentCommon common = getComponentCommon(spoutId, spout); |
| try{ |
| spoutSpecs.put(spoutId, new SpoutSpec(ComponentObject.serialized_java(Utils.javaSerialize(spout)), common)); |
| }catch(RuntimeException wrapperCause){ |
| if (wrapperCause.getCause() != null && NotSerializableException.class.equals(wrapperCause.getCause().getClass())){ |
| throw new IllegalStateException( |
| "Spout '" + spoutId + "' contains a non-serializable field of type " + wrapperCause.getCause().getMessage() + ", " + |
| "which was instantiated prior to topology creation. " + wrapperCause.getCause().getMessage() + " " + |
| "should be instantiated within the prepare method of '" + spoutId + " at the earliest.", wrapperCause); |
| } |
| throw wrapperCause; |
| } |
| } |
| |
| StormTopology stormTopology = new StormTopology(spoutSpecs, |
| boltSpecs, |
| new HashMap<String, StateSpoutSpec>()); |
| |
| stormTopology.set_worker_hooks(_workerHooks); |
| |
| return Utils.addVersions(stormTopology); |
| } |
| |
| /** |
| * Define a new bolt in this topology with parallelism of just one thread. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the bolt |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public BoltDeclarer setBolt(String id, IRichBolt bolt) throws IllegalArgumentException { |
| return setBolt(id, bolt, null); |
| } |
| |
| /** |
| * Define a new bolt in this topology with the specified amount of parallelism. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the bolt |
| * @param parallelism_hint the number of tasks that should be assigned to execute this bolt. Each task will run on a thread in a process somewhere around the cluster. |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public BoltDeclarer setBolt(String id, IRichBolt bolt, Number parallelism_hint) throws IllegalArgumentException { |
| validateUnusedId(id); |
| initCommon(id, bolt, parallelism_hint); |
| _bolts.put(id, bolt); |
| return new BoltGetter(id); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a basic bolt, which is a |
| * simpler to use but more restricted kind of bolt. Basic bolts are intended |
| * for non-aggregation processing and automate the anchoring/acking process to |
| * achieve proper reliability in the topology. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the basic bolt |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public BoltDeclarer setBolt(String id, IBasicBolt bolt) throws IllegalArgumentException { |
| return setBolt(id, bolt, null); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a basic bolt, which is a |
| * simpler to use but more restricted kind of bolt. Basic bolts are intended |
| * for non-aggregation processing and automate the anchoring/acking process to |
| * achieve proper reliability in the topology. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the basic bolt |
| * @param parallelism_hint the number of tasks that should be assigned to execute this bolt. Each task will run on a thread in a process somewhere around the cluster. |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public BoltDeclarer setBolt(String id, IBasicBolt bolt, Number parallelism_hint) throws IllegalArgumentException { |
| return setBolt(id, new BasicBoltExecutor(bolt), parallelism_hint); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a windowed bolt, intended |
| * for windowing operations. The {@link IWindowedBolt#execute(TupleWindow)} method |
| * is triggered for each window interval with the list of current events in the window. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the windowed bolt |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public BoltDeclarer setBolt(String id, IWindowedBolt bolt) throws IllegalArgumentException { |
| return setBolt(id, bolt, null); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a windowed bolt, intended |
| * for windowing operations. The {@link IWindowedBolt#execute(TupleWindow)} method |
| * is triggered for each window interval with the list of current events in the window. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the windowed bolt |
| * @param parallelism_hint the number of tasks that should be assigned to execute this bolt. Each task will run on a thread in a process somwehere around the cluster. |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public BoltDeclarer setBolt(String id, IWindowedBolt bolt, Number parallelism_hint) throws IllegalArgumentException { |
| return setBolt(id, new WindowedBoltExecutor(bolt), parallelism_hint); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a stateful bolt, that requires its |
| * state (of computation) to be saved. When this bolt is initialized, the {@link IStatefulBolt#initState(State)} method |
| * is invoked after {@link IStatefulBolt#prepare(Map, TopologyContext, OutputCollector)} but before {@link IStatefulBolt#execute(Tuple)} |
| * with its previously saved state. |
| * <p> |
| * The framework provides at-least once guarantee for the state updates. Bolts (both stateful and non-stateful) in a stateful topology |
| * are expected to anchor the tuples while emitting and ack the input tuples once its processed. |
| * </p> |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the stateful bolt |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public <T extends State> BoltDeclarer setBolt(String id, IStatefulBolt<T> bolt) throws IllegalArgumentException { |
| return setBolt(id, bolt, null); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a stateful bolt, that requires its |
| * state (of computation) to be saved. When this bolt is initialized, the {@link IStatefulBolt#initState(State)} method |
| * is invoked after {@link IStatefulBolt#prepare(Map, TopologyContext, OutputCollector)} but before {@link IStatefulBolt#execute(Tuple)} |
| * with its previously saved state. |
| * <p> |
| * The framework provides at-least once guarantee for the state updates. Bolts (both stateful and non-stateful) in a stateful topology |
| * are expected to anchor the tuples while emitting and ack the input tuples once its processed. |
| * </p> |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the stateful bolt |
| * @param parallelism_hint the number of tasks that should be assigned to execute this bolt. Each task will run on a thread in a process somwehere around the cluster. |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public <T extends State> BoltDeclarer setBolt(String id, IStatefulBolt<T> bolt, Number parallelism_hint) throws IllegalArgumentException { |
| hasStatefulBolt = true; |
| return setBolt(id, new StatefulBoltExecutor<T>(bolt), parallelism_hint); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a stateful windowed bolt, intended for stateful |
| * windowing operations. The {@link IStatefulWindowedBolt#execute(TupleWindow)} method is triggered |
| * for each window interval with the list of current events in the window. During initialization of |
| * this bolt {@link IStatefulWindowedBolt#initState(State)} is invoked with its previously saved state. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the stateful windowed bolt |
| * @param <T> the type of the state (e.g. {@link org.apache.storm.state.KeyValueState}) |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public <T extends State> BoltDeclarer setBolt(String id, IStatefulWindowedBolt<T> bolt) throws IllegalArgumentException { |
| return setBolt(id, bolt, null); |
| } |
| |
| /** |
| * Define a new bolt in this topology. This defines a stateful windowed bolt, intended for stateful |
| * windowing operations. The {@link IStatefulWindowedBolt#execute(TupleWindow)} method is triggered |
| * for each window interval with the list of current events in the window. During initialization of |
| * this bolt {@link IStatefulWindowedBolt#initState(State)} is invoked with its previously saved state. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this bolt's outputs. |
| * @param bolt the stateful windowed bolt |
| * @param parallelism_hint the number of tasks that should be assigned to execute this bolt. Each task will run on a thread in a process somwehere around the cluster. |
| * @param <T> the type of the state (e.g. {@link org.apache.storm.state.KeyValueState}) |
| * @return use the returned object to declare the inputs to this component |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public <T extends State> BoltDeclarer setBolt(String id, IStatefulWindowedBolt<T> bolt, Number parallelism_hint) throws IllegalArgumentException { |
| hasStatefulBolt = true; |
| return setBolt(id, new StatefulBoltExecutor<T>(new StatefulWindowedBoltExecutor<T>(bolt)), parallelism_hint); |
| } |
| |
| /** |
| * Define a new spout in this topology. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this spout's outputs. |
| * @param spout the spout |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public SpoutDeclarer setSpout(String id, IRichSpout spout) throws IllegalArgumentException { |
| return setSpout(id, spout, null); |
| } |
| |
| /** |
| * Define a new spout in this topology with the specified parallelism. If the spout declares |
| * itself as non-distributed, the parallelism_hint will be ignored and only one task |
| * will be allocated to this component. |
| * |
| * @param id the id of this component. This id is referenced by other components that want to consume this spout's outputs. |
| * @param parallelism_hint the number of tasks that should be assigned to execute this spout. Each task will run on a thread in a process somewhere around the cluster. |
| * @param spout the spout |
| * @throws IllegalArgumentException if {@code parallelism_hint} is not positive |
| */ |
| public SpoutDeclarer setSpout(String id, IRichSpout spout, Number parallelism_hint) throws IllegalArgumentException { |
| validateUnusedId(id); |
| initCommon(id, spout, parallelism_hint); |
| _spouts.put(id, spout); |
| return new SpoutGetter(id); |
| } |
| |
| public void setStateSpout(String id, IRichStateSpout stateSpout) throws IllegalArgumentException { |
| setStateSpout(id, stateSpout, null); |
| } |
| |
| public void setStateSpout(String id, IRichStateSpout stateSpout, Number parallelism_hint) throws IllegalArgumentException { |
| validateUnusedId(id); |
| // TODO: finish |
| } |
| |
| /** |
| * Add a new worker lifecycle hook |
| * |
| * @param workerHook the lifecycle hook to add |
| */ |
| public void addWorkerHook(IWorkerHook workerHook) { |
| if(null == workerHook) { |
| throw new IllegalArgumentException("WorkerHook must not be null."); |
| } |
| |
| _workerHooks.add(ByteBuffer.wrap(Utils.javaSerialize(workerHook))); |
| } |
| |
| private void validateUnusedId(String id) { |
| if(_bolts.containsKey(id)) { |
| throw new IllegalArgumentException("Bolt has already been declared for id " + id); |
| } |
| if(_spouts.containsKey(id)) { |
| throw new IllegalArgumentException("Spout has already been declared for id " + id); |
| } |
| if(_stateSpouts.containsKey(id)) { |
| throw new IllegalArgumentException("State spout has already been declared for id " + id); |
| } |
| } |
| |
| /** |
| * If the topology has at least one stateful bolt |
| * add a {@link CheckpointSpout} component to the topology. |
| */ |
| private void maybeAddCheckpointSpout() { |
| if (hasStatefulBolt) { |
| setSpout(CHECKPOINT_COMPONENT_ID, new CheckpointSpout(), 1); |
| } |
| } |
| |
| private void maybeAddCheckpointInputs(ComponentCommon common) { |
| if (hasStatefulBolt) { |
| addCheckPointInputs(common); |
| } |
| } |
| |
| /** |
| * If the topology has at least one stateful bolt all the non-stateful bolts |
| * are wrapped in {@link CheckpointTupleForwarder} so that the checkpoint |
| * tuples can flow through the topology. |
| */ |
| private IRichBolt maybeAddCheckpointTupleForwarder(IRichBolt bolt) { |
| if (hasStatefulBolt && !(bolt instanceof StatefulBoltExecutor)) { |
| bolt = new CheckpointTupleForwarder(bolt); |
| } |
| return bolt; |
| } |
| |
| /** |
| * For bolts that has incoming streams from spouts (the root bolts), |
| * add checkpoint stream from checkpoint spout to its input. For other bolts, |
| * add checkpoint stream from the previous bolt to its input. |
| */ |
| private void addCheckPointInputs(ComponentCommon component) { |
| Set<GlobalStreamId> checkPointInputs = new HashSet<>(); |
| for (GlobalStreamId inputStream : component.get_inputs().keySet()) { |
| String sourceId = inputStream.get_componentId(); |
| if (_spouts.containsKey(sourceId)) { |
| checkPointInputs.add(new GlobalStreamId(CHECKPOINT_COMPONENT_ID, CHECKPOINT_STREAM_ID)); |
| } else { |
| checkPointInputs.add(new GlobalStreamId(sourceId, CHECKPOINT_STREAM_ID)); |
| } |
| } |
| for (GlobalStreamId streamId : checkPointInputs) { |
| component.put_to_inputs(streamId, Grouping.all(new NullStruct())); |
| } |
| } |
| |
| private ComponentCommon getComponentCommon(String id, IComponent component) { |
| ComponentCommon ret = new ComponentCommon(_commons.get(id)); |
| OutputFieldsGetter getter = new OutputFieldsGetter(); |
| component.declareOutputFields(getter); |
| ret.set_streams(getter.getFieldsDeclaration()); |
| return ret; |
| } |
| |
| private void initCommon(String id, IComponent component, Number parallelism) throws IllegalArgumentException { |
| ComponentCommon common = new ComponentCommon(); |
| common.set_inputs(new HashMap<GlobalStreamId, Grouping>()); |
| if(parallelism!=null) { |
| int dop = parallelism.intValue(); |
| if(dop < 1) { |
| throw new IllegalArgumentException("Parallelism must be positive."); |
| } |
| common.set_parallelism_hint(dop); |
| } |
| Map conf = component.getComponentConfiguration(); |
| if(conf!=null) common.set_json_conf(JSONValue.toJSONString(conf)); |
| _commons.put(id, common); |
| } |
| |
| protected class ConfigGetter<T extends ComponentConfigurationDeclarer> extends BaseConfigurationDeclarer<T> { |
| String _id; |
| |
| public ConfigGetter(String id) { |
| _id = id; |
| } |
| |
| @Override |
| public T addConfigurations(Map<String, Object> conf) { |
| if(conf!=null && conf.containsKey(Config.TOPOLOGY_KRYO_REGISTER)) { |
| throw new IllegalArgumentException("Cannot set serializations for a component using fluent API"); |
| } |
| String currConf = _commons.get(_id).get_json_conf(); |
| _commons.get(_id).set_json_conf(mergeIntoJson(parseJson(currConf), conf)); |
| return (T) this; |
| } |
| } |
| |
| protected class SpoutGetter extends ConfigGetter<SpoutDeclarer> implements SpoutDeclarer { |
| public SpoutGetter(String id) { |
| super(id); |
| } |
| } |
| |
| protected class BoltGetter extends ConfigGetter<BoltDeclarer> implements BoltDeclarer { |
| private String _boltId; |
| |
| public BoltGetter(String boltId) { |
| super(boltId); |
| _boltId = boltId; |
| } |
| |
| public BoltDeclarer fieldsGrouping(String componentId, Fields fields) { |
| return fieldsGrouping(componentId, Utils.DEFAULT_STREAM_ID, fields); |
| } |
| |
| public BoltDeclarer fieldsGrouping(String componentId, String streamId, Fields fields) { |
| return grouping(componentId, streamId, Grouping.fields(fields.toList())); |
| } |
| |
| public BoltDeclarer globalGrouping(String componentId) { |
| return globalGrouping(componentId, Utils.DEFAULT_STREAM_ID); |
| } |
| |
| public BoltDeclarer globalGrouping(String componentId, String streamId) { |
| return grouping(componentId, streamId, Grouping.fields(new ArrayList<String>())); |
| } |
| |
| public BoltDeclarer shuffleGrouping(String componentId) { |
| return shuffleGrouping(componentId, Utils.DEFAULT_STREAM_ID); |
| } |
| |
| public BoltDeclarer shuffleGrouping(String componentId, String streamId) { |
| return grouping(componentId, streamId, Grouping.shuffle(new NullStruct())); |
| } |
| |
| public BoltDeclarer localOrShuffleGrouping(String componentId) { |
| return localOrShuffleGrouping(componentId, Utils.DEFAULT_STREAM_ID); |
| } |
| |
| public BoltDeclarer localOrShuffleGrouping(String componentId, String streamId) { |
| return grouping(componentId, streamId, Grouping.local_or_shuffle(new NullStruct())); |
| } |
| |
| public BoltDeclarer noneGrouping(String componentId) { |
| return noneGrouping(componentId, Utils.DEFAULT_STREAM_ID); |
| } |
| |
| public BoltDeclarer noneGrouping(String componentId, String streamId) { |
| return grouping(componentId, streamId, Grouping.none(new NullStruct())); |
| } |
| |
| public BoltDeclarer allGrouping(String componentId) { |
| return allGrouping(componentId, Utils.DEFAULT_STREAM_ID); |
| } |
| |
| public BoltDeclarer allGrouping(String componentId, String streamId) { |
| return grouping(componentId, streamId, Grouping.all(new NullStruct())); |
| } |
| |
| public BoltDeclarer directGrouping(String componentId) { |
| return directGrouping(componentId, Utils.DEFAULT_STREAM_ID); |
| } |
| |
| public BoltDeclarer directGrouping(String componentId, String streamId) { |
| return grouping(componentId, streamId, Grouping.direct(new NullStruct())); |
| } |
| |
| private BoltDeclarer grouping(String componentId, String streamId, Grouping grouping) { |
| _commons.get(_boltId).put_to_inputs(new GlobalStreamId(componentId, streamId), grouping); |
| return this; |
| } |
| |
| @Override |
| public BoltDeclarer partialKeyGrouping(String componentId, Fields fields) { |
| return customGrouping(componentId, new PartialKeyGrouping(fields)); |
| } |
| |
| @Override |
| public BoltDeclarer partialKeyGrouping(String componentId, String streamId, Fields fields) { |
| return customGrouping(componentId, streamId, new PartialKeyGrouping(fields)); |
| } |
| |
| @Override |
| public BoltDeclarer customGrouping(String componentId, CustomStreamGrouping grouping) { |
| return customGrouping(componentId, Utils.DEFAULT_STREAM_ID, grouping); |
| } |
| |
| @Override |
| public BoltDeclarer customGrouping(String componentId, String streamId, CustomStreamGrouping grouping) { |
| return grouping(componentId, streamId, Grouping.custom_serialized(Utils.javaSerialize(grouping))); |
| } |
| |
| @Override |
| public BoltDeclarer grouping(GlobalStreamId id, Grouping grouping) { |
| return grouping(id.get_componentId(), id.get_streamId(), grouping); |
| } |
| } |
| |
| private static Map parseJson(String json) { |
| if (json==null) { |
| return new HashMap(); |
| } else { |
| try { |
| return (Map) JSONValue.parseWithException(json); |
| } catch (ParseException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| |
| private static String mergeIntoJson(Map into, Map newMap) { |
| Map res = new HashMap(into); |
| if(newMap!=null) res.putAll(newMap); |
| return JSONValue.toJSONString(res); |
| } |
| } |
