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c702b4486c
With Java 8 in GAE standard environment, we can now use standard java thread factory to run the metric reporter in the background in daemon mode, which would not interfere with basic scaling idle timeout as App Engine thread would. Because the thread is not created by ThreadManager, no App Engine APIs can be called from it. We therefore use GoogleCredential instead of AppIdentityCredential as HttpRequestInitializer, and NetHttpTransport instead of UlrFetchTransport as HttpTransport. MetricReporter is lazy injected because it depends on jsonCredential retrieved from CloudKms, which is not available in a test environment, causing FrontendServletTest and BackendServletTest to fail. Some minor re-formatting with google-java-format on edited files. Lastly removed moe comments in import statement, which makes the linter unhappy. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=172896227
65 lines
2.6 KiB
Java
65 lines
2.6 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.module.frontend;
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import com.google.appengine.api.LifecycleManager;
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import dagger.Lazy;
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import google.registry.monitoring.metrics.MetricReporter;
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import google.registry.util.FormattingLogger;
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import java.io.IOException;
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import java.security.Security;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.bouncycastle.jce.provider.BouncyCastleProvider;
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/** Servlet that should handle all requests to our "default" App Engine module. */
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public final class FrontendServlet extends HttpServlet {
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private static final FrontendComponent component = DaggerFrontendComponent.create();
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private static final FrontendRequestHandler requestHandler = component.requestHandler();
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private static final Lazy<MetricReporter> metricReporter = component.metricReporter();
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private static final FormattingLogger logger = FormattingLogger.getLoggerForCallerClass();
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@Override
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public void init() {
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Security.addProvider(new BouncyCastleProvider());
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try {
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metricReporter.get().startAsync().awaitRunning(10, TimeUnit.SECONDS);
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logger.info("Started up MetricReporter");
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} catch (TimeoutException timeoutException) {
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logger.severefmt("Failed to initialize MetricReporter: %s", timeoutException);
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}
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LifecycleManager.getInstance()
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.setShutdownHook(
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() -> {
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try {
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metricReporter.get().stopAsync().awaitTerminated(10, TimeUnit.SECONDS);
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logger.info("Shut down MetricReporter");
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} catch (TimeoutException timeoutException) {
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logger.severefmt("Failed to stop MetricReporter: %s", timeoutException);
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}
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});
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}
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@Override
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public void service(HttpServletRequest req, HttpServletResponse rsp) throws IOException {
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requestHandler.handleRequest(req, rsp);
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}
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}
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