package backtype.storm.coordination;
import backtype.storm.Constants;
import backtype.storm.coordination.CoordinatedBolt.SourceArgs;
import backtype.storm.generated.GlobalStreamId;
import backtype.storm.generated.Grouping;
import backtype.storm.grouping.CustomStreamGrouping;
import backtype.storm.topology.BaseConfigurationDeclarer;
import backtype.storm.topology.BasicBoltExecutor;
import backtype.storm.topology.BoltDeclarer;
import backtype.storm.topology.IBasicBolt;
import backtype.storm.topology.IRichBolt;
import backtype.storm.topology.InputDeclarer;
import backtype.storm.topology.TopologyBuilder;
import backtype.storm.tuple.Fields;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
public class BatchSubtopologyBuilder {
Map<String, Component> _bolts = new HashMap<String, Component>();
Component _masterBolt;
String _masterId;
public BatchSubtopologyBuilder(String masterBoltId, IBasicBolt masterBolt,
Number boltParallelism) {
Integer p = boltParallelism == null ? null : boltParallelism.intValue();
_masterBolt = new Component(new BasicBoltExecutor(masterBolt), p);
_masterId = masterBoltId;
}
public BatchSubtopologyBuilder(String masterBoltId, IBasicBolt masterBolt) {
this(masterBoltId, masterBolt, null);
}
public BoltDeclarer getMasterDeclarer() {
return new BoltDeclarerImpl(_masterBolt);
}
public BoltDeclarer setBolt(String id, IBatchBolt bolt) {
return setBolt(id, bolt, null);
}
public BoltDeclarer setBolt(String id, IBatchBolt bolt, Number parallelism) {
return setBolt(id, new BatchBoltExecutor(bolt), parallelism);
}
public BoltDeclarer setBolt(String id, IBasicBolt bolt) {
return setBolt(id, bolt, null);
}
public BoltDeclarer setBolt(String id, IBasicBolt bolt, Number parallelism) {
return setBolt(id, new BasicBoltExecutor(bolt), parallelism);
}
private BoltDeclarer setBolt(String id, IRichBolt bolt, Number parallelism) {
Integer p = null;
if (parallelism != null)
p = parallelism.intValue();
Component component = new Component(bolt, p);
_bolts.put(id, component);
return new BoltDeclarerImpl(component);
}
public void extendTopology(TopologyBuilder builder) {
BoltDeclarer declarer = builder.setBolt(_masterId, new CoordinatedBolt(
_masterBolt.bolt), _masterBolt.parallelism);
for (InputDeclaration decl : _masterBolt.declarations) {
decl.declare(declarer);
}
for (Map conf : _masterBolt.componentConfs) {
declarer.addConfigurations(conf);
}
for (String id : _bolts.keySet()) {
Component component = _bolts.get(id);
Map<String, SourceArgs> coordinatedArgs = new HashMap<String, SourceArgs>();
for (String c : componentBoltSubscriptions(component)) {
SourceArgs source;
if (c.equals(_masterId)) {
source = SourceArgs.single();
} else {
source = SourceArgs.all();
}
coordinatedArgs.put(c, source);
}
BoltDeclarer input = builder.setBolt(id, new CoordinatedBolt(
component.bolt, coordinatedArgs, null),
component.parallelism);
for (Map conf : component.componentConfs) {
input.addConfigurations(conf);
}
for (String c : componentBoltSubscriptions(component)) {
input.directGrouping(c, Constants.COORDINATED_STREAM_ID);
}
for (InputDeclaration d : component.declarations) {
d.declare(input);
}
}
}
private Set<String> componentBoltSubscriptions(Component component) {
Set<String> ret = new HashSet<String>();
for (InputDeclaration d : component.declarations) {
ret.add(d.getComponent());
}
return ret;
}
private static class Component {
public IRichBolt bolt;
public Integer parallelism;
public List<InputDeclaration> declarations = new ArrayList<InputDeclaration>();
public List<Map> componentConfs = new ArrayList<Map>();
public Component(IRichBolt bolt, Integer parallelism) {
this.bolt = bolt;
this.parallelism = parallelism;
}
}
private static interface InputDeclaration {
void declare(InputDeclarer declarer);
String getComponent();
}
private class BoltDeclarerImpl extends
BaseConfigurationDeclarer<BoltDeclarer> implements BoltDeclarer {
Component _component;
public BoltDeclarerImpl(Component component) {
_component = component;
}
@Override
public BoltDeclarer fieldsGrouping(final String component,
final Fields fields) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.fieldsGrouping(component, fields);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer fieldsGrouping(final String component,
final String streamId, final Fields fields) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.fieldsGrouping(component, streamId, fields);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer globalGrouping(final String component) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.globalGrouping(component);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer globalGrouping(final String component,
final String streamId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.globalGrouping(component, streamId);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer shuffleGrouping(final String component) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.shuffleGrouping(component);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer shuffleGrouping(final String component,
final String streamId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.shuffleGrouping(component, streamId);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer localOrShuffleGrouping(final String component) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.localOrShuffleGrouping(component);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer localOrShuffleGrouping(final String component,
final String streamId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.localOrShuffleGrouping(component, streamId);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer localFirstGrouping(final String componentId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.localFirstGrouping(componentId);
}
@Override
public String getComponent() {
return componentId;
}
});
return this;
}
@Override
public BoltDeclarer localFirstGrouping(final String component,
final String streamId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.localFirstGrouping(component, streamId);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer noneGrouping(final String component) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.noneGrouping(component);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer noneGrouping(final String component,
final String streamId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.noneGrouping(component, streamId);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer allGrouping(final String component) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.allGrouping(component);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer allGrouping(final String component,
final String streamId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.allGrouping(component, streamId);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer directGrouping(final String component) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.directGrouping(component);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer directGrouping(final String component,
final String streamId) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.directGrouping(component, streamId);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer customGrouping(final String component,
final CustomStreamGrouping grouping) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.customGrouping(component, grouping);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer customGrouping(final String component,
final String streamId, final CustomStreamGrouping grouping) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.customGrouping(component, streamId, grouping);
}
@Override
public String getComponent() {
return component;
}
});
return this;
}
@Override
public BoltDeclarer grouping(final GlobalStreamId stream,
final Grouping grouping) {
addDeclaration(new InputDeclaration() {
@Override
public void declare(InputDeclarer declarer) {
declarer.grouping(stream, grouping);
}
@Override
public String getComponent() {
return stream.get_componentId();
}
});
return this;
}
private void addDeclaration(InputDeclaration declaration) {
_component.declarations.add(declaration);
}
@Override
public BoltDeclarer addConfigurations(Map conf) {
_component.componentConfs.add(conf);
return this;
}
}
}