=per #3774 Persistence activator templates

2014-02-03 16:08:19 +01:00 · 2014-02-03 16:08:19 +01:00 · cf6e61e45a
commit cf6e61e45a
parent 1e86e6436b
31 changed files with 518 additions and 76 deletions
--- a/akka-samples/akka-sample-persistence-java/src/main/java/sample/persistence/ViewExample.java
+++ b/akka-samples/akka-sample-persistence-java/src/main/java/sample/persistence/ViewExample.java
@ -0,0 +1,82 @@
+/**
+ * Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
+ */
+
+package sample.persistence;
+
+import java.util.concurrent.TimeUnit;
+
+import scala.concurrent.duration.Duration;
+
+import akka.actor.*;
+import akka.persistence.*;
+
+public class ViewExample {
+    public static class ExampleProcessor extends UntypedProcessor {
+        @Override
+        public String processorId() {
+            return "processor-5";
+        }
+
+        @Override
+        public void onReceive(Object message) throws Exception {
+            if (message instanceof Persistent) {
+                Persistent p = (Persistent)message;
+                System.out.println(String.format("processor received %s (sequence nr = %d)", p.payload(), p.sequenceNr()));
+            }
+        }
+    }
+
+    public static class ExampleView extends UntypedView {
+        private final ActorRef destination = getContext().actorOf(Props.create(ExampleDestination.class));
+        private final ActorRef channel = getContext().actorOf(Channel.props("channel"));
+
+        private int numReplicated = 0;
+
+        @Override
+        public String viewId() {
+            return "view-5";
+        }
+
+        @Override
+        public String processorId() {
+            return "processor-5";
+        }
+
+        @Override
+        public void onReceive(Object message) throws Exception {
+            if (message instanceof Persistent) {
+                Persistent p = (Persistent)message;
+                numReplicated += 1;
+                System.out.println(String.format("view received %s (sequence nr = %d, num replicated = %d)", p.payload(), p.sequenceNr(), numReplicated));
+                channel.tell(Deliver.create(p.withPayload("replicated-" + p.payload()), destination.path()), getSelf());
+            } else if (message instanceof SnapshotOffer) {
+                SnapshotOffer so = (SnapshotOffer)message;
+                numReplicated = (Integer)so.snapshot();
+                System.out.println(String.format("view received snapshot offer %s (metadata = %s)", numReplicated, so.metadata()));
+            } else if (message.equals("snap")) {
+                saveSnapshot(numReplicated);
+            }
+        }
+    }
+
+    public static class ExampleDestination extends UntypedActor {
+        @Override
+        public void onReceive(Object message) throws Exception {
+            if (message instanceof ConfirmablePersistent) {
+                ConfirmablePersistent cp = (ConfirmablePersistent)message;
+                System.out.println(String.format("destination received %s (sequence nr = %s)", cp.payload(), cp.sequenceNr()));
+                cp.confirm();
+            }
+        }
+    }
+
+    public static void main(String... args) throws Exception {
+        final ActorSystem system = ActorSystem.create("example");
+        final ActorRef processor = system.actorOf(Props.create(ExampleProcessor.class));
+        final ActorRef view = system.actorOf(Props.create(ExampleView.class));
+
+        system.scheduler().schedule(Duration.Zero(), Duration.create(2, TimeUnit.SECONDS), processor, Persistent.create("scheduled"), system.dispatcher(), null);
+        system.scheduler().schedule(Duration.Zero(), Duration.create(5, TimeUnit.SECONDS), view, "snap", system.dispatcher(), null);
+    }
+}