package org.opendaylight.controller.cluster.raft.utils;
import akka.actor.ActorRef;
+import akka.actor.Props;
import akka.actor.UntypedActor;
import akka.pattern.Patterns;
import akka.util.Timeout;
+import com.google.common.base.Predicate;
+import com.google.common.base.Predicates;
+import com.google.common.base.Throwables;
+import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.util.concurrent.Uninterruptibles;
import java.util.ArrayList;
+import java.util.Collections;
import java.util.List;
import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+import org.junit.Assert;
import scala.concurrent.Await;
import scala.concurrent.Future;
import scala.concurrent.duration.Duration;
import scala.concurrent.duration.FiniteDuration;
-
public class MessageCollectorActor extends UntypedActor {
+ private static final String ARE_YOU_READY = "ARE_YOU_READY";
+ public static final String GET_ALL_MESSAGES = "messages";
+ private static final String CLEAR_MESSAGES = "clear-messages";
+
private final List<Object> messages = new ArrayList<>();
@Override public void onReceive(Object message) throws Exception {
- if(message instanceof String){
- if("get-all-messages".equals(message)){
- getSender().tell(new ArrayList(messages), getSelf());
- }
- } else {
+ if (ARE_YOU_READY.equals(message)) {
+ getSender().tell("yes", getSelf());
+ } else if (GET_ALL_MESSAGES.equals(message)) {
+ getSender().tell(new ArrayList<>(messages), getSelf());
+ } else if (CLEAR_MESSAGES.equals(message)) {
+ clear();
+ } else if (message != null) {
messages.add(message);
}
}
messages.clear();
}
- public static List<Object> getAllMessages(ActorRef actor) throws Exception {
+ @SuppressWarnings("unchecked")
+ private static List<Object> getAllMessages(ActorRef actor) throws Exception {
FiniteDuration operationDuration = Duration.create(5, TimeUnit.SECONDS);
Timeout operationTimeout = new Timeout(operationDuration);
- Future<Object> future = Patterns.ask(actor, "get-all-messages", operationTimeout);
+ Future<Object> future = Patterns.ask(actor, GET_ALL_MESSAGES, operationTimeout);
- try {
- return (List<Object>) Await.result(future, operationDuration);
- } catch (Exception e) {
- throw e;
- }
+ return (List<Object>) Await.result(future, operationDuration);
+ }
+
+ public static void clearMessages(ActorRef actor) {
+ actor.tell(CLEAR_MESSAGES, ActorRef.noSender());
}
/**
- * Get the first message that matches the specified class
- * @param actor
- * @param clazz
- * @return
+ * Get the first message that matches the specified class.
+ *
+ * @param actor the MessageCollectorActor reference
+ * @param clazz the class to match
+ * @return the first matching message
*/
public static <T> T getFirstMatching(ActorRef actor, Class<T> clazz) throws Exception {
- for(int i = 0; i < 50; i++) {
- List<Object> allMessages = getAllMessages(actor);
+ List<Object> allMessages = getAllMessages(actor);
- for(Object message : allMessages){
- if(message.getClass().equals(clazz)){
- return (T) message;
+ for (Object message : allMessages) {
+ if (message.getClass().equals(clazz)) {
+ return clazz.cast(message);
+ }
+ }
+
+ return null;
+ }
+
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ public static <T> List<T> expectMatching(ActorRef actor, Class<T> clazz, int count) {
+ return expectMatching(actor, clazz, count, msg -> true);
+ }
+
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ public static <T> List<T> expectMatching(ActorRef actor, Class<T> clazz, int count,
+ Predicate<T> matcher) {
+ int timeout = 5000;
+ Exception lastEx = null;
+ List<T> messages = Collections.emptyList();
+ for (int i = 0; i < timeout / 50; i++) {
+ try {
+ messages = getAllMatching(actor, clazz);
+ Iterables.removeIf(messages, Predicates.not(matcher));
+ if (messages.size() >= count) {
+ return messages;
}
+
+ lastEx = null;
+ } catch (Exception e) {
+ lastEx = e;
}
- Uninterruptibles.sleepUninterruptibly(100, TimeUnit.MILLISECONDS);
+ Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
}
- return null;
+ throw new AssertionError(String.format("Expected %d messages of type %s. Actual received was %d: %s", count,
+ clazz, messages.size(), messages), lastEx);
+ }
+
+ public static <T> T expectFirstMatching(ActorRef actor, Class<T> clazz) {
+ return expectFirstMatching(actor, clazz, 5000);
+ }
+
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ public static <T> T expectFirstMatching(ActorRef actor, Class<T> clazz, long timeout) {
+ Exception lastEx = null;
+ int count = (int) (timeout / 50);
+ for (int i = 0; i < count; i++) {
+ try {
+ T message = getFirstMatching(actor, clazz);
+ if (message != null) {
+ return message;
+ }
+
+ lastEx = null;
+ } catch (Exception e) {
+ lastEx = e;
+ }
+
+ Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
+ }
+
+ throw new AssertionError("Did not receive message of type " + clazz, lastEx);
}
- public static List<Object> getAllMatching(ActorRef actor, Class<?> clazz) throws Exception {
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ public static <T> T expectFirstMatching(ActorRef actor, Class<T> clazz, Predicate<T> matcher) {
+ int timeout = 5000;
+ Exception lastEx = null;
+ T lastMessage = null;
+ for (int i = 0; i < timeout / 50; i++) {
+ try {
+ List<T> messages = getAllMatching(actor, clazz);
+ for (T msg : messages) {
+ if (matcher.apply(msg)) {
+ return msg;
+ }
+
+ lastMessage = msg;
+ }
+
+ lastEx = null;
+ } catch (Exception e) {
+ lastEx = e;
+ }
+
+ Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
+ }
+
+ throw new AssertionError(String.format("Expected specific message of type %s. Last message received was: %s",
+ clazz, lastMessage), lastEx);
+ }
+
+ public static <T> void assertNoneMatching(ActorRef actor, Class<T> clazz) {
+ assertNoneMatching(actor, clazz, 5000);
+ }
+
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ public static <T> void assertNoneMatching(ActorRef actor, Class<T> clazz, long timeout) {
+ Exception lastEx = null;
+ int count = (int) (timeout / 50);
+ for (int i = 0; i < count; i++) {
+ try {
+ T message = getFirstMatching(actor, clazz);
+ if (message != null) {
+ Assert.fail("Unexpected message received" + message.toString());
+ return;
+ }
+
+ lastEx = null;
+ } catch (Exception e) {
+ lastEx = e;
+ }
+
+ Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
+ }
+
+ if (lastEx != null) {
+ Throwables.propagate(lastEx);
+ }
+
+ return;
+ }
+
+
+ public static <T> List<T> getAllMatching(ActorRef actor, Class<T> clazz) throws Exception {
List<Object> allMessages = getAllMessages(actor);
- List<Object> output = Lists.newArrayList();
+ List<T> output = Lists.newArrayList();
- for(Object message : allMessages){
- if(message.getClass().equals(clazz)){
- output.add(message);
+ for (Object message : allMessages) {
+ if (message.getClass().equals(clazz)) {
+ output.add(clazz.cast(message));
}
}
return output;
}
+ public static void waitUntilReady(ActorRef actor) throws Exception {
+ long timeout = 500;
+ FiniteDuration duration = Duration.create(timeout, TimeUnit.MILLISECONDS);
+ for (int i = 0; i < 10; i++) {
+ try {
+ Await.ready(Patterns.ask(actor, ARE_YOU_READY, timeout), duration);
+ return;
+ } catch (TimeoutException e) {
+ // will fall through below
+ }
+ }
+
+ throw new TimeoutException("Actor not ready in time.");
+ }
+
+ public static Props props() {
+ return Props.create(MessageCollectorActor.class);
+ }
}
Code Review / controller.git / blobdiff