io.druid.server.emitter.HttpEmitterModule.java Source code

Introduction

Here is the source code for io.druid.server.emitter.HttpEmitterModule.java

Source

/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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 io.druid.server.emitter;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.base.Supplier;
import com.google.inject.Binder;
import com.google.inject.Module;
import com.google.inject.Provides;
import com.google.inject.name.Named;
import com.google.inject.util.Providers;
import io.druid.guice.LazySingleton;
import io.druid.java.util.common.logger.Logger;
import io.druid.java.util.emitter.core.Emitter;
import io.druid.java.util.emitter.core.HttpEmitterConfig;
import io.druid.java.util.emitter.core.HttpPostEmitter;
import io.druid.guice.JsonConfigProvider;
import io.druid.guice.ManageLifecycle;
import io.druid.java.util.common.concurrent.Execs;
import io.druid.java.util.common.lifecycle.Lifecycle;
import io.druid.server.security.TLSUtils;
import io.netty.handler.ssl.ClientAuth;
import io.netty.handler.ssl.JdkSslContext;
import io.netty.util.HashedWheelTimer;
import org.asynchttpclient.AsyncHttpClient;
import org.asynchttpclient.DefaultAsyncHttpClient;
import org.asynchttpclient.DefaultAsyncHttpClientConfig;

import javax.annotation.Nullable;
import javax.net.ssl.SSLContext;
import java.security.NoSuchAlgorithmException;

/**
 */
public class HttpEmitterModule implements Module {
    private static final Logger log = new Logger(HttpEmitterModule.class);

    @Override
    public void configure(Binder binder) {
        JsonConfigProvider.bind(binder, "druid.emitter.http", HttpEmitterConfig.class);
        JsonConfigProvider.bind(binder, "druid.emitter.http.ssl", HttpEmitterSSLClientConfig.class);

        configureSsl(binder);
    }

    static void configureSsl(Binder binder) {
        final SSLContext context;
        try {
            context = SSLContext.getDefault();
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }

        binder.bind(SSLContext.class).toProvider(Providers.of(context)).in(LazySingleton.class);
    }

    static AsyncHttpClient createAsyncHttpClient(String nameFormat, String timerThreadNameFormat,
            @Nullable SSLContext sslContext) {
        final DefaultAsyncHttpClientConfig.Builder builder = new DefaultAsyncHttpClientConfig.Builder()
                .setThreadFactory(Execs.makeThreadFactory(nameFormat))
                .setNettyTimer(new HashedWheelTimer(Execs.makeThreadFactory(timerThreadNameFormat)));
        if (sslContext != null) {
            builder.setSslContext(new JdkSslContext(sslContext, true, ClientAuth.NONE));
        }
        return new DefaultAsyncHttpClient(builder.build());
    }

    @Provides
    @ManageLifecycle
    @Named("http")
    public Emitter getEmitter(Supplier<HttpEmitterConfig> config, Supplier<HttpEmitterSSLClientConfig> sslConfig,
            @Nullable SSLContext sslContext, Lifecycle lifecycle, ObjectMapper jsonMapper) {
        return new HttpPostEmitter(config.get(),
                lifecycle.addCloseableInstance(createAsyncHttpClient("HttpPostEmitter-AsyncHttpClient-%d",
                        "HttpPostEmitter-AsyncHttpClient-Timer-%d",
                        getEffectiveSSLContext(sslConfig.get(), sslContext))),
                jsonMapper);
    }

    public static SSLContext getEffectiveSSLContext(HttpEmitterSSLClientConfig sslConfig, SSLContext sslContext) {
        SSLContext effectiveSSLContext;
        if (sslConfig.isUseDefaultJavaContext()) {
            try {
                effectiveSSLContext = SSLContext.getDefault();
            } catch (NoSuchAlgorithmException nsae) {
                throw new RuntimeException(nsae);
            }
        } else if (sslConfig.getTrustStorePath() != null) {
            log.info("Creating SSLContext for HttpEmitter client using config [%s]", sslConfig);
            effectiveSSLContext = TLSUtils.createSSLContext(sslConfig.getProtocol(), sslConfig.getTrustStoreType(),
                    sslConfig.getTrustStorePath(), sslConfig.getTrustStoreAlgorithm(),
                    sslConfig.getTrustStorePasswordProvider());
        } else {
            effectiveSSLContext = sslContext;
        }
        return effectiveSSLContext;
    }
}