Add Sink class, implement sink methods and tests

gcloud-java-logging/pom.xml

@@ -35,7 +35,7 @@
     <dependency>
       <groupId>io.grpc</groupId>
       <artifactId>grpc-all</artifactId>
-      <version>0.12.0</version>
+      <version>0.14.0</version>
     </dependency>
     <dependency>
       <groupId>com.google.auto.value</groupId>
@@ -48,6 +48,12 @@
       <version>4.12</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.easymock</groupId>
+      <artifactId>easymock</artifactId>
+      <version>3.4</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
   <profiles>
     <profile>

gcloud-java-logging/src/main/java/com/google/cloud/logging/Logging.java

@@ -16,7 +16,123 @@
 
 package com.google.cloud.logging;
 
+import com.google.cloud.AsyncPage;
+import com.google.cloud.Page;
 import com.google.cloud.Service;
 
+import java.util.Map;
+import java.util.concurrent.Future;
+
 public interface Logging extends AutoCloseable, Service<LoggingOptions> {
+
+  /**
+   * Class for specifying options for listing sinks, monitored resources and monitored resource
+   * descriptors.
+   */
+  final class ListOption extends Option {
+
+    private static final long serialVersionUID = -6857294816115909271L;
+
+    enum OptionType implements Option.OptionType {
+      PAGE_SIZE, PAGE_TOKEN;
+
+      @SuppressWarnings("unchecked")
+      <T> T get(Map<Option.OptionType, ?> options) {
+        return (T) options.get(this);
+      }
+    }
+
+    private ListOption(OptionType option, Object value) {
+      super(option, value);
+    }
+
+    /**
+     * Returns an option to specify the maximum number of resources returned per page.
+     */
+    public static ListOption pageSize(int pageSize) {
+      return new ListOption(OptionType.PAGE_SIZE, pageSize);
+    }
+
+    /**
+     * Returns an option to specify the page token from which to start listing resources.
+     */
+    public static ListOption pageToken(String pageToken) {
+      return new ListOption(OptionType.PAGE_TOKEN, pageToken);
+    }
+  }
+
+  /**
+   * Creates a new sink.
+   *
+   * @return the created sink
+   * @throws LoggingException upon failure
+   */
+  Sink create(SinkInfo sink);
+
+  /**
+   * Sends a request for creating a sink. This method returns a {@code Future} object to consume the
+   * result. {@link Future#get()} returns the created sink or {@code null} if not found.
+   */
+  Future<Sink> createAsync(SinkInfo sink);
+
+  /**
+   * Updates a sink or creates one if it does not exist.
+   *
+   * @return the created sink
+   * @throws LoggingException upon failure
+   */
+  Sink update(SinkInfo sink);
+
+  /**
+   * Sends a request for updating a sink (or creating it, if it does not exist). This method returns
+   * a {@code Future} object to consume the result. {@link Future#get()} returns the
+   * updated/created sink or {@code null} if not found.
+   */
+  Future<Sink> updateAsync(SinkInfo sink);
+
+  /**
+   * Returns the requested sink or {@code null} if not found.
+   *
+   * @throws LoggingException upon failure
+   */
+  Sink getSink(String sink);
+
+  /**
+   * Sends a request for getting a sink. This method returns a {@code Future} object to consume the
+   * result. {@link Future#get()} returns the requested sink or {@code null} if not found.
+   *
+   * @throws LoggingException upon failure
+   */
+  Future<Sink> getSinkAsync(String sink);
+
+  /**
+   * Lists the sinks. This method returns a {@link Page} object that can be used to consume
+   * paginated results. Use {@link ListOption} to specify the page size or the page token from which
+   * to start listing sinks.
+   *
+   * @throws LoggingException upon failure
+   */
+  Page<Sink> listSinks(ListOption... options);
+
+  /**
+   * Sends a request for listing sinks. This method returns a {@code Future} object to consume
+   * the result. {@link Future#get()} returns an {@link AsyncPage} object that can be used to
+   * asynchronously handle paginated results. Use {@link ListOption} to specify the page size or the
+   * page token from which to start listing sinks.
+   */
+  Future<AsyncPage<Sink>> listSinksAsync(ListOption... options);
+
+  /**
+   * Deletes the requested sink.
+   *
+   * @return {@code true} if the sink was deleted, {@code false} if it was not found
+   */
+  boolean deleteSink(String sink);
+
+  /**
+   * Sends a request for deleting a sink. This method returns a {@code Future} object to consume the
+   * result. {@link Future#get()} returns {@code true} if the sink was deleted, {@code false} if it
+   * was not found.
+   */
+  Future<Boolean> deleteSinkAsync(String sink);
 }

gcloud-java-logging/src/main/java/com/google/cloud/logging/LoggingImpl.java

@@ -0,0 +1,228 @@
+/*
+ * Copyright 2016 Google Inc. All Rights Reserved.
+ *
+ * Licensed 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 com.google.cloud.logging;
+
+import static com.google.api.client.util.Preconditions.checkArgument;
+import static com.google.cloud.logging.Logging.ListOption.OptionType.PAGE_SIZE;
+import static com.google.cloud.logging.Logging.ListOption.OptionType.PAGE_TOKEN;
+import static com.google.common.util.concurrent.Futures.lazyTransform;
+
+import com.google.cloud.AsyncPage;
+import com.google.cloud.AsyncPageImpl;
+import com.google.cloud.BaseService;
+import com.google.cloud.Page;
+import com.google.cloud.PageImpl;
+import com.google.cloud.logging.spi.LoggingRpc;
+import com.google.cloud.logging.spi.v2.ConfigServiceV2Api;
+import com.google.common.base.Function;
+import com.google.common.base.Throwables;
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import com.google.common.util.concurrent.Uninterruptibles;
+import com.google.logging.v2.CreateSinkRequest;
+import com.google.logging.v2.DeleteSinkRequest;
+import com.google.logging.v2.GetSinkRequest;
+import com.google.logging.v2.ListSinksRequest;
+import com.google.logging.v2.ListSinksResponse;
+import com.google.logging.v2.UpdateSinkRequest;
+import com.google.protobuf.Empty;
+
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Future;
+
+class LoggingImpl extends BaseService<LoggingOptions> implements Logging {
+
+  private final LoggingRpc rpc;
+  private boolean closed;
+
+  private static final Function<Empty, Boolean> EMPTY_TO_BOOLEAN_FUNCTION =
+      new Function<Empty, Boolean>() {
+        @Override
+        public Boolean apply(Empty input) {
+          return input != null;
+        }
+      };
+
+  LoggingImpl(LoggingOptions options) {
+    super(options);
+    rpc = options.rpc();
+  }
+
+  private static <V> V get(Future<V> future) {
+    try {
+      return Uninterruptibles.getUninterruptibly(future);
+    } catch (ExecutionException ex) {
+      throw Throwables.propagate(ex.getCause());
+    }
+  }
+
+  private abstract static class BasePageFetcher<T> implements AsyncPageImpl.NextPageFetcher<T> {
+
+    private static final long serialVersionUID = 5095123855547444030L;
+
+    private final LoggingOptions serviceOptions;
+    private final Map<Option.OptionType, ?> requestOptions;
+
+    private BasePageFetcher(LoggingOptions serviceOptions, String cursor,
+        Map<Option.OptionType, ?> requestOptions) {
+      this.serviceOptions = serviceOptions;
+      this.requestOptions =
+          PageImpl.nextRequestOptions(PAGE_TOKEN, cursor, requestOptions);
+    }
+
+    LoggingOptions serviceOptions() {
+      return serviceOptions;
+    }
+
+    Map<Option.OptionType, ?> requestOptions() {
+      return requestOptions;
+    }
+  }
+
+  private static class SinkPageFetcher extends BasePageFetcher<Sink> {
+
+    private static final long serialVersionUID = 4879364260060886875L;
+
+    SinkPageFetcher(LoggingOptions serviceOptions, String cursor,
+        Map<Option.OptionType, ?> requestOptions) {
+      super(serviceOptions, cursor, requestOptions);
+    }
+
+    @Override
+    public Future<AsyncPage<Sink>> nextPage() {
+      return listSinksAsync(serviceOptions(), requestOptions());
+    }
+  }
+
+  @Override
+  public Sink create(SinkInfo sink) {
+    return get(createAsync(sink));
+  }
+
+  @Override
+  public Future<Sink> createAsync(SinkInfo sink) {
+    CreateSinkRequest request = CreateSinkRequest.newBuilder()
+        .setProjectName(ConfigServiceV2Api.formatProjectName(options().projectId()))
+        .setSink(sink.toPb(options().projectId()))
+        .build();
+    return lazyTransform(rpc.create(request), Sink.fromPbFunction(this));
+  }
+
+  @Override
+  public Sink update(SinkInfo sink) {
+    return get(updateAsync(sink));
+  }
+
+  @Override
+  public Future<Sink> updateAsync(SinkInfo sink) {
+    UpdateSinkRequest request = UpdateSinkRequest.newBuilder()
+        .setSinkName(ConfigServiceV2Api.formatSinkName(options().projectId(), sink.name()))
+        .setSink(sink.toPb(options().projectId()))
+        .build();
+    return lazyTransform(rpc.update(request), Sink.fromPbFunction(this));
+  }
+
+  @Override
+  public Sink getSink(String sink) {
+    return get(getSinkAsync(sink));
+  }
+
+  @Override
+  public Future<Sink> getSinkAsync(String sink) {
+    GetSinkRequest request = GetSinkRequest.newBuilder()
+        .setSinkName(ConfigServiceV2Api.formatSinkName(options().projectId(), sink))
+        .build();
+    return lazyTransform(rpc.get(request), Sink.fromPbFunction(this));
+  }
+
+  private static ListSinksRequest listSinksRequest(LoggingOptions serviceOptions,
+      Map<Option.OptionType, ?> options) {
+    ListSinksRequest.Builder builder = ListSinksRequest.newBuilder();
+    builder.setProjectName(ConfigServiceV2Api.formatProjectName(serviceOptions.projectId()));
+    Integer pageSize = PAGE_SIZE.get(options);
+    String pageToken = PAGE_TOKEN.get(options);
+    if (pageSize != null) {
+      builder.setPageSize(pageSize);
+    }
+    if (pageToken != null) {
+      builder.setPageToken(pageToken);
+    }
+    return builder.build();
+  }
+
+  private static Future<AsyncPage<Sink>> listSinksAsync(final LoggingOptions serviceOptions,
+      final Map<Option.OptionType, ?> options) {
+    final ListSinksRequest request = listSinksRequest(serviceOptions, options);
+    Future<ListSinksResponse> list = serviceOptions.rpc().list(request);
+    return lazyTransform(list, new Function<ListSinksResponse, AsyncPage<Sink>>() {
+      @Override
+      public AsyncPage<Sink> apply(ListSinksResponse listSinksResponse) {
+        List<Sink> sinks = listSinksResponse.getSinksList() == null ? ImmutableList.<Sink>of()
+            : Lists.transform(listSinksResponse.getSinksList(),
+            Sink.fromPbFunction(serviceOptions.service()));
+        String cursor = listSinksResponse.getNextPageToken().equals("") ? null
+            : listSinksResponse.getNextPageToken();
+        return new AsyncPageImpl<>(
+            new SinkPageFetcher(serviceOptions, cursor, options), cursor, sinks);
+      }
+    });
+  }
+
+  @Override
+  public Page<Sink> listSinks(ListOption... options) {
+    return get(listSinksAsync(options));
+  }
+
+  @Override
+  public Future<AsyncPage<Sink>> listSinksAsync(ListOption... options) {
+    return listSinksAsync(options(), optionMap(options));
+  }
+
+  @Override
+  public boolean deleteSink(String sink) {
+    return get(deleteSinkAsync(sink));
+  }
+
+  @Override
+  public Future<Boolean> deleteSinkAsync(String sink) {
+    DeleteSinkRequest request = DeleteSinkRequest.newBuilder()
+        .setSinkName(ConfigServiceV2Api.formatSinkName(options().projectId(), sink))
+        .build();
+    return lazyTransform(rpc.delete(request), EMPTY_TO_BOOLEAN_FUNCTION);
+  }
+
+  @Override
+  public void close() throws Exception {
+    if (closed) {
+      return;
+    }
+    closed = true;
+    rpc.close();
+  }
+
+  static <T extends Option.OptionType> Map<Option.OptionType, ?> optionMap(Option... options) {
+    Map<Option.OptionType, Object> optionMap = Maps.newHashMap();
+    for (Option option : options) {
+      Object prev = optionMap.put(option.optionType(), option.value());
+      checkArgument(prev == null, "Duplicate option %s", option);
+    }
+    return optionMap;
+  }
+}

gcloud-java-logging/src/main/java/com/google/cloud/logging/LoggingOptions.java

@@ -37,9 +37,7 @@ public static class DefaultLoggingFactory implements LoggingFactory {
 
     @Override
     public Logging create(LoggingOptions options) {
-      // todo(mziccard) uncomment once LoggingImpl is implemented
-      // return new LoggingImpl(options);
-      return null;
+      return new LoggingImpl(options);
     }
   }