Formatting java codes with sbt-java-formatter.
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hepin1989
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401 changed files with 19750 additions and 17450 deletions
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@ -4,7 +4,6 @@
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package jdocs.sharding;
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import java.util.Optional;
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import java.time.Duration;
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@ -17,17 +16,17 @@ import akka.actor.PoisonPill;
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import akka.actor.Props;
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import akka.actor.SupervisorStrategy;
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import akka.actor.ReceiveTimeout;
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//#counter-extractor
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// #counter-extractor
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import akka.cluster.sharding.ShardRegion;
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//#counter-extractor
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// #counter-extractor
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//#counter-start
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// #counter-start
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import akka.japi.Option;
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import akka.cluster.sharding.ClusterSharding;
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import akka.cluster.sharding.ClusterShardingSettings;
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//#counter-start
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// #counter-start
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import akka.persistence.AbstractPersistentActor;
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import akka.japi.pf.DeciderBuilder;
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@ -41,127 +40,127 @@ public class ClusterShardingTest {
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}
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public void demonstrateUsage() {
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//#counter-extractor
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ShardRegion.MessageExtractor messageExtractor = new ShardRegion.MessageExtractor() {
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// #counter-extractor
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ShardRegion.MessageExtractor messageExtractor =
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new ShardRegion.MessageExtractor() {
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@Override
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public String entityId(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return String.valueOf(((Counter.EntityEnvelope) message).id);
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else if (message instanceof Counter.Get)
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return String.valueOf(((Counter.Get) message).counterId);
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else
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return null;
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}
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@Override
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public String entityId(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return String.valueOf(((Counter.EntityEnvelope) message).id);
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else if (message instanceof Counter.Get)
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return String.valueOf(((Counter.Get) message).counterId);
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else return null;
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}
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@Override
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public Object entityMessage(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return ((Counter.EntityEnvelope) message).payload;
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else
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return message;
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}
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@Override
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public Object entityMessage(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return ((Counter.EntityEnvelope) message).payload;
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else return message;
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}
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@Override
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public String shardId(Object message) {
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int numberOfShards = 100;
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if (message instanceof Counter.EntityEnvelope) {
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long id = ((Counter.EntityEnvelope) message).id;
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return String.valueOf(id % numberOfShards);
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} else if (message instanceof Counter.Get) {
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long id = ((Counter.Get) message).counterId;
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return String.valueOf(id % numberOfShards);
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} else {
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return null;
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}
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}
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@Override
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public String shardId(Object message) {
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int numberOfShards = 100;
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if (message instanceof Counter.EntityEnvelope) {
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long id = ((Counter.EntityEnvelope) message).id;
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return String.valueOf(id % numberOfShards);
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} else if (message instanceof Counter.Get) {
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long id = ((Counter.Get) message).counterId;
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return String.valueOf(id % numberOfShards);
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} else {
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return null;
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}
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}
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};
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// #counter-extractor
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};
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//#counter-extractor
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//#counter-start
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// #counter-start
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Option<String> roleOption = Option.none();
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ClusterShardingSettings settings = ClusterShardingSettings.create(system);
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ActorRef startedCounterRegion = ClusterSharding.get(system).start("Counter",
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Props.create(Counter.class), settings, messageExtractor);
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//#counter-start
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ActorRef startedCounterRegion =
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ClusterSharding.get(system)
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.start("Counter", Props.create(Counter.class), settings, messageExtractor);
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// #counter-start
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//#counter-usage
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// #counter-usage
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ActorRef counterRegion = ClusterSharding.get(system).shardRegion("Counter");
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counterRegion.tell(new Counter.Get(123), getSelf());
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counterRegion.tell(new Counter.EntityEnvelope(123,
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Counter.CounterOp.INCREMENT), getSelf());
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counterRegion.tell(new Counter.EntityEnvelope(123, Counter.CounterOp.INCREMENT), getSelf());
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counterRegion.tell(new Counter.Get(123), getSelf());
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//#counter-usage
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// #counter-usage
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//#counter-supervisor-start
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ClusterSharding.get(system).start("SupervisedCounter",
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Props.create(CounterSupervisor.class), settings, messageExtractor);
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//#counter-supervisor-start
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// #counter-supervisor-start
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ClusterSharding.get(system)
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.start(
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"SupervisedCounter", Props.create(CounterSupervisor.class), settings, messageExtractor);
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// #counter-supervisor-start
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//#proxy-dc
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// #proxy-dc
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ActorRef counterProxyDcB =
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ClusterSharding.get(system).startProxy(
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"Counter",
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Optional.empty(),
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Optional.of("B"), // data center name
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messageExtractor);
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//#proxy-dc
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ClusterSharding.get(system)
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.startProxy(
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"Counter",
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Optional.empty(),
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Optional.of("B"), // data center name
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messageExtractor);
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// #proxy-dc
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}
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public void demonstrateUsage2() {
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ShardRegion.MessageExtractor messageExtractor = new ShardRegion.MessageExtractor() {
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ShardRegion.MessageExtractor messageExtractor =
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new ShardRegion.MessageExtractor() {
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@Override
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public String entityId(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return String.valueOf(((Counter.EntityEnvelope) message).id);
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else if (message instanceof Counter.Get)
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return String.valueOf(((Counter.Get) message).counterId);
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else
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return null;
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}
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@Override
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public String entityId(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return String.valueOf(((Counter.EntityEnvelope) message).id);
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else if (message instanceof Counter.Get)
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return String.valueOf(((Counter.Get) message).counterId);
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else return null;
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}
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@Override
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public Object entityMessage(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return ((Counter.EntityEnvelope) message).payload;
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else
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return message;
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}
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@Override
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public Object entityMessage(Object message) {
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if (message instanceof Counter.EntityEnvelope)
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return ((Counter.EntityEnvelope) message).payload;
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else return message;
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}
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//#extractShardId-StartEntity
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@Override
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public String shardId(Object message) {
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int numberOfShards = 100;
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if (message instanceof Counter.EntityEnvelope) {
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long id = ((Counter.EntityEnvelope) message).id;
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return String.valueOf(id % numberOfShards);
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} else if (message instanceof Counter.Get) {
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long id = ((Counter.Get) message).counterId;
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return String.valueOf(id % numberOfShards);
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} else if (message instanceof ShardRegion.StartEntity) {
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long id = Long.valueOf(((ShardRegion.StartEntity) message).entityId());
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return String.valueOf(id % numberOfShards);
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} else {
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return null;
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}
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}
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//#extractShardId-StartEntity
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// #extractShardId-StartEntity
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@Override
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public String shardId(Object message) {
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int numberOfShards = 100;
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if (message instanceof Counter.EntityEnvelope) {
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long id = ((Counter.EntityEnvelope) message).id;
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return String.valueOf(id % numberOfShards);
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} else if (message instanceof Counter.Get) {
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long id = ((Counter.Get) message).counterId;
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return String.valueOf(id % numberOfShards);
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} else if (message instanceof ShardRegion.StartEntity) {
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long id = Long.valueOf(((ShardRegion.StartEntity) message).entityId());
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return String.valueOf(id % numberOfShards);
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} else {
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return null;
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}
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}
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// #extractShardId-StartEntity
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};
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};
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}
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static//#counter-actor
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public class Counter extends AbstractPersistentActor {
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public // #counter-actor
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static class Counter extends AbstractPersistentActor {
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public enum CounterOp {
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INCREMENT, DECREMENT
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INCREMENT,
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DECREMENT
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}
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public static class Get {
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final public long counterId;
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public final long counterId;
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public Get(long counterId) {
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this.counterId = counterId;
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@ -169,8 +168,8 @@ public class ClusterShardingTest {
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}
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public static class EntityEnvelope {
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final public long id;
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final public Object payload;
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public final long id;
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public final Object payload;
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public EntityEnvelope(long id, Object payload) {
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this.id = id;
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@ -179,7 +178,7 @@ public class ClusterShardingTest {
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}
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public static class CounterChanged {
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final public int delta;
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public final int delta;
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public CounterChanged(int delta) {
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this.delta = delta;
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@ -206,19 +205,17 @@ public class ClusterShardingTest {
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@Override
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public Receive createReceiveRecover() {
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return receiveBuilder()
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.match(CounterChanged.class, this::updateState)
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.build();
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return receiveBuilder().match(CounterChanged.class, this::updateState).build();
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}
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@Override
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public Receive createReceive() {
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return receiveBuilder()
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.match(Get.class, this::receiveGet)
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.matchEquals(CounterOp.INCREMENT, msg -> receiveIncrement())
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.matchEquals(CounterOp.DECREMENT, msg -> receiveDecrement())
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.matchEquals(ReceiveTimeout.getInstance(), msg -> passivate())
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.build();
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.match(Get.class, this::receiveGet)
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.matchEquals(CounterOp.INCREMENT, msg -> receiveIncrement())
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.matchEquals(CounterOp.DECREMENT, msg -> receiveDecrement())
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.matchEquals(ReceiveTimeout.getInstance(), msg -> passivate())
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.build();
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}
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private void receiveGet(Get msg) {
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@ -234,26 +231,25 @@ public class ClusterShardingTest {
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}
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private void passivate() {
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getContext().getParent().tell(
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new ShardRegion.Passivate(PoisonPill.getInstance()), getSelf());
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getContext().getParent().tell(new ShardRegion.Passivate(PoisonPill.getInstance()), getSelf());
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}
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}
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//#counter-actor
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// #counter-actor
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static//#supervisor
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public class CounterSupervisor extends AbstractActor {
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public // #supervisor
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static class CounterSupervisor extends AbstractActor {
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private final ActorRef counter = getContext().actorOf(
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Props.create(Counter.class), "theCounter");
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private final ActorRef counter =
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getContext().actorOf(Props.create(Counter.class), "theCounter");
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private static final SupervisorStrategy strategy =
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new OneForOneStrategy(DeciderBuilder.
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match(IllegalArgumentException.class, e -> SupervisorStrategy.resume()).
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match(ActorInitializationException.class, e -> SupervisorStrategy.stop()).
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match(Exception.class, e -> SupervisorStrategy.restart()).
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matchAny(o -> SupervisorStrategy.escalate()).build());
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new OneForOneStrategy(
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DeciderBuilder.match(IllegalArgumentException.class, e -> SupervisorStrategy.resume())
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.match(ActorInitializationException.class, e -> SupervisorStrategy.stop())
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.match(Exception.class, e -> SupervisorStrategy.restart())
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.matchAny(o -> SupervisorStrategy.escalate())
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.build());
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@Override
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public SupervisorStrategy supervisorStrategy() {
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@ -263,11 +259,10 @@ public class ClusterShardingTest {
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@Override
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public Receive createReceive() {
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return receiveBuilder()
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.match(Object.class, msg -> counter.forward(msg, getContext()))
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.build();
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.match(Object.class, msg -> counter.forward(msg, getContext()))
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.build();
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}
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}
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//#supervisor
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// #supervisor
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}
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