chore: delete CloseableMonitor

errorprone is removing support for the annotation this uses

Author: dpcollins-google

google-cloud-pubsublite/src/main/java/com/google/cloud/pubsublite/internal/CloseableMonitor.java

@@ -16,11 +16,16 @@
 
 package com.google.cloud.pubsublite.internal;
 
+import static com.google.cloud.pubsublite.internal.ExtractStatus.toCanonical;
+import static com.google.common.util.concurrent.MoreExecutors.directExecutor;
+
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutureCallback;
 import com.google.api.core.ApiFutures;
 import com.google.api.core.SettableApiFuture;
 import com.google.cloud.pubsublite.internal.wire.SystemExecutors;
+import java.util.List;
+import java.util.concurrent.Future;
 
 public final class MoreApiFutures {
   private MoreApiFutures() {}
@@ -42,4 +47,18 @@ public void onSuccess(T t) {
         },
         SystemExecutors.getFuturesExecutor());
   }
+
+  public static ApiFuture<Void> whenFirstDone(List<ApiFuture<?>> futures) {
+    SettableApiFuture<Void> anyDone = SettableApiFuture.create();
+    futures.forEach(f -> f.addListener(() -> anyDone.set(null), directExecutor()));
+    return anyDone;
+  }
+
+  public static <T> T get(Future<T> f) {
+    try {
+      return f.get();
+    } catch (Throwable t) {
+      throw toCanonical(t).underlying;
+    }
+  }
 }

google-cloud-pubsublite/src/main/java/com/google/cloud/pubsublite/internal/MoreApiFutures.java

@@ -16,6 +16,7 @@
 
 package com.google.cloud.pubsublite.internal;
 
+import com.google.common.util.concurrent.Monitor;
 import com.google.common.util.concurrent.Monitor.Guard;
 import java.util.ArrayDeque;
 import java.util.Queue;
@@ -26,22 +27,22 @@
 public final class SerialExecutor implements AutoCloseable, Executor {
   private final Executor executor;
 
-  private final CloseableMonitor monitor = new CloseableMonitor();
+  private final Monitor monitor = new Monitor();
   private final Guard isInactive =
-      new Guard(monitor.monitor) {
+      new Guard(monitor) {
         @Override
         public boolean isSatisfied() {
           return !isTaskActive;
         }
       };
 
-  @GuardedBy("monitor.monitor")
+  @GuardedBy("monitor")
   private final Queue<Runnable> tasks;
 
-  @GuardedBy("monitor.monitor")
+  @GuardedBy("monitor")
   private boolean isTaskActive;
 
-  @GuardedBy("monitor.monitor")
+  @GuardedBy("monitor")
   private boolean isShutdown;
 
   public SerialExecutor(Executor executor) {
@@ -53,7 +54,7 @@ public SerialExecutor(Executor executor) {
 
   /** Waits until there are no active tasks. */
   public void waitUntilInactive() {
-    try (CloseableMonitor.Hold h = monitor.enterWhenUninterruptibly(isInactive)) {}
+    monitor.enterWhenUninterruptibly(isInactive);
   }
 
   /**
@@ -62,14 +63,18 @@ public void waitUntilInactive() {
    */
   @Override
   public void close() {
-    try (CloseableMonitor.Hold h = monitor.enter()) {
+    monitor.enter();
+    try {
       isShutdown = true;
+    } finally {
+      monitor.leave();
     }
   }
 
   @Override
   public void execute(Runnable r) {
-    try (CloseableMonitor.Hold h = monitor.enter()) {
+    monitor.enter();
+    try {
       if (isShutdown) {
         return;
       }
@@ -86,21 +91,29 @@ public void execute(Runnable r) {
       if (!isTaskActive) {
         scheduleNextTask();
       }
+    } finally {
+      monitor.leave();
     }
   }
 
   private boolean shouldExecuteTask() {
-    try (CloseableMonitor.Hold h = monitor.enter()) {
+    monitor.enter();
+    try {
       return !isShutdown;
+    } finally {
+      monitor.leave();
     }
   }
 
   private void scheduleNextTask() {
-    try (CloseableMonitor.Hold h = monitor.enter()) {
+    monitor.enter();
+    try {
       isTaskActive = !tasks.isEmpty() && !isShutdown;
       if (isTaskActive) {
         executor.execute(tasks.poll());
       }
+    } finally {
+      monitor.leave();
     }
   }
 }

google-cloud-pubsublite/src/main/java/com/google/cloud/pubsublite/internal/SerialExecutor.java

@@ -21,7 +21,6 @@
 import com.google.api.gax.rpc.ApiException;
 import com.google.cloud.pubsublite.Partition;
 import com.google.cloud.pubsublite.internal.CheckedApiException;
-import com.google.cloud.pubsublite.internal.CloseableMonitor;
 import com.google.cloud.pubsublite.internal.ProxyService;
 import com.google.cloud.pubsublite.proto.InitialPartitionAssignmentRequest;
 import com.google.cloud.pubsublite.proto.PartitionAssignment;
@@ -41,12 +40,10 @@ public class AssignerImpl extends ProxyService
   private final PartitionAssignmentRequest initialRequest;
   private final String uuidHex;
 
-  private final CloseableMonitor monitor = new CloseableMonitor();
-
-  @GuardedBy("monitor.monitor")
+  @GuardedBy("this")
   private final RetryingConnection<PartitionAssignmentRequest, ConnectedAssigner> connection;
 
-  @GuardedBy("monitor.monitor")
+  @GuardedBy("this")
   private final PartitionAssignmentReceiver receiver;
 
   @VisibleForTesting
@@ -80,10 +77,8 @@ public AssignerImpl(
   }
 
   @Override
-  public void triggerReinitialize(CheckedApiException streamError) {
-    try (CloseableMonitor.Hold h = monitor.enter()) {
-      connection.reinitialize(initialRequest);
-    }
+  public synchronized void triggerReinitialize(CheckedApiException streamError) {
+    connection.reinitialize(initialRequest);
   }
 
   private static Set<Partition> toSet(PartitionAssignment assignment) throws ApiException {
@@ -95,13 +90,11 @@ private static Set<Partition> toSet(PartitionAssignment assignment) throws ApiEx
   }
 
   @Override
-  public void onClientResponse(PartitionAssignment value) throws CheckedApiException {
-    try (CloseableMonitor.Hold h = monitor.enter()) {
-      Set<Partition> partitions = toSet(value);
-      logger.atFine().log("Subscriber with uuid %s received assignment: %s", uuidHex, partitions);
-      receiver.handleAssignment(partitions);
-      logger.atInfo().log("Subscriber with uuid %s handled assignment: %s", uuidHex, partitions);
-      connection.modifyConnection(connectionOr -> connectionOr.ifPresent(ConnectedAssigner::ack));
-    }
+  public synchronized void onClientResponse(PartitionAssignment value) throws CheckedApiException {
+    Set<Partition> partitions = toSet(value);
+    logger.atFine().log("Subscriber with uuid %s received assignment: %s", uuidHex, partitions);
+    receiver.handleAssignment(partitions);
+    logger.atInfo().log("Subscriber with uuid %s handled assignment: %s", uuidHex, partitions);
+    connection.modifyConnection(connectionOr -> connectionOr.ifPresent(ConnectedAssigner::ack));
   }
 }