[GitHub] ivankelly closed pull request #1622: Add mock registration client

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ivankelly closed pull request #1622: Add mock registration client
URL: https://github.com/apache/bookkeeper/pull/1622
 
 
   

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diff --git a/bookkeeper-server/src/test/java/org/apache/bookkeeper/discover/MockRegistrationClient.java b/bookkeeper-server/src/test/java/org/apache/bookkeeper/discover/MockRegistrationClient.java
new file mode 100644
index 0000000000..40178b98f8
--- /dev/null
+++ b/bookkeeper-server/src/test/java/org/apache/bookkeeper/discover/MockRegistrationClient.java
@@ -0,0 +1,157 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.bookkeeper.discover;
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import org.apache.bookkeeper.net.BookieSocketAddress;
+import org.apache.bookkeeper.versioning.LongVersion;
+import org.apache.bookkeeper.versioning.Versioned;
+
+/**
+ * Mock implementation of registration client.
+ * All actions take place in a single thread executor, so they are async
+ * w.r.t. the caller.
+ */
+public class MockRegistrationClient implements RegistrationClient {
+    final ExecutorService executor;
+    private long currentVersion = 0;
+    private Set<BookieSocketAddress> bookies = new HashSet<BookieSocketAddress>();
+    private Set<BookieSocketAddress> readOnlyBookies = new HashSet<BookieSocketAddress>();
+    private Set<RegistrationListener> bookieWatchers = new HashSet<RegistrationListener>();
+    private Set<RegistrationListener> readOnlyBookieWatchers = new HashSet<RegistrationListener>();
+
+    public MockRegistrationClient() {
+        this.executor = Executors.newSingleThreadExecutor((r) -> new Thread(r, "MockRegistrationClient"));
+    }
+
+    @Override
+    public void close() {
+        executor.shutdownNow();
+    }
+
+    private static Versioned<Set<BookieSocketAddress>> versioned(Set<BookieSocketAddress> bookies, long version) {
+        return new Versioned<>(Collections.unmodifiableSet(bookies), new LongVersion(version));
+    }
+
+    CompletableFuture<Void> addBookies(BookieSocketAddress... bookies) {
+        CompletableFuture<Void> promise = new CompletableFuture<>();
+        executor.submit(() -> {
+                currentVersion++;
+                for (BookieSocketAddress b : bookies) {
+                    this.bookies.add(b);
+                }
+                bookieWatchers.forEach(w -> w.onBookiesChanged(versioned(this.bookies, currentVersion)));
+                promise.complete(null);
+            });
+        return promise;
+    }
+
+    CompletableFuture<Void> removeBookies(BookieSocketAddress... bookies) {
+        CompletableFuture<Void> promise = new CompletableFuture<>();
+        executor.submit(() -> {
+                currentVersion++;
+                for (BookieSocketAddress b : bookies) {
+                    this.bookies.add(b);
+                }
+                bookieWatchers.forEach(w -> w.onBookiesChanged(versioned(this.bookies, currentVersion)));
+                promise.complete(null);
+            });
+        return promise;
+    }
+
+    CompletableFuture<Void> addReadOnlyBookies(BookieSocketAddress... bookies) {
+        CompletableFuture<Void> promise = new CompletableFuture<>();
+        executor.submit(() -> {
+                currentVersion++;
+                for (BookieSocketAddress b : bookies) {
+                    this.readOnlyBookies.add(b);
+                }
+                readOnlyBookieWatchers.forEach(w -> w.onBookiesChanged(versioned(readOnlyBookies, currentVersion)));
+                promise.complete(null);
+            });
+        return promise;
+    }
+
+    CompletableFuture<Void> removeReadOnlyBookies(BookieSocketAddress... bookies) {
+        CompletableFuture<Void> promise = new CompletableFuture<>();
+        executor.submit(() -> {
+                currentVersion++;
+                for (BookieSocketAddress b : bookies) {
+                    this.readOnlyBookies.add(b);
+                }
+                readOnlyBookieWatchers.forEach(w -> w.onBookiesChanged(versioned(readOnlyBookies, currentVersion)));
+                promise.complete(null);
+            });
+        return promise;
+    }
+
+    @Override
+    public CompletableFuture<Versioned<Set<BookieSocketAddress>>> getWritableBookies() {
+        CompletableFuture<Versioned<Set<BookieSocketAddress>>> promise = new CompletableFuture<>();
+        executor.submit(() -> promise.complete(versioned(bookies, currentVersion)));
+        return promise;
+    }
+
+    @Override
+    public CompletableFuture<Versioned<Set<BookieSocketAddress>>> getReadOnlyBookies() {
+        CompletableFuture<Versioned<Set<BookieSocketAddress>>> promise = new CompletableFuture<>();
+        executor.submit(() -> promise.complete(versioned(readOnlyBookies, currentVersion)));
+        return promise;
+    }
+
+    @Override
+    public CompletableFuture<Void> watchWritableBookies(RegistrationListener listener) {
+        CompletableFuture<Void> promise = new CompletableFuture<>();
+        executor.submit(() -> {
+                bookieWatchers.add(listener);
+                promise.complete(null);
+            });
+        return promise;
+    }
+
+    @Override
+    public void unwatchWritableBookies(RegistrationListener listener) {
+        executor.submit(() -> {
+                bookieWatchers.remove(listener);
+            });
+    }
+
+    @Override
+    public CompletableFuture<Void> watchReadOnlyBookies(RegistrationListener listener) {
+        CompletableFuture<Void> promise = new CompletableFuture<>();
+        executor.submit(() -> {
+                readOnlyBookieWatchers.add(listener);
+                promise.complete(null);
+            });
+        return promise;
+    }
+
+    @Override
+    public void unwatchReadOnlyBookies(RegistrationListener listener) {
+        executor.submit(() -> {
+                readOnlyBookieWatchers.remove(listener);
+            });
+    }
+}


 

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