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/*
* Copyright 2020 The gRPC Authors
*
* 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 org.apache.rocketmq.shaded.io.grpc.internal;
import static org.apache.rocketmq.shaded.com.google.common.base.Preconditions.checkArgument;
import static org.apache.rocketmq.shaded.com.google.common.base.Preconditions.checkNotNull;
import org.apache.rocketmq.shaded.com.google.common.annotations.VisibleForTesting;
import org.apache.rocketmq.shaded.com.google.common.util.concurrent.MoreExecutors;
import org.apache.rocketmq.shaded.com.google.errorprone.annotations.DoNotCall;
import org.apache.rocketmq.shaded.io.grpc.BinaryLog;
import org.apache.rocketmq.shaded.io.grpc.BindableService;
import org.apache.rocketmq.shaded.io.grpc.CompressorRegistry;
import org.apache.rocketmq.shaded.io.grpc.Context;
import org.apache.rocketmq.shaded.io.grpc.Deadline;
import org.apache.rocketmq.shaded.io.grpc.DecompressorRegistry;
import org.apache.rocketmq.shaded.io.grpc.HandlerRegistry;
import org.apache.rocketmq.shaded.io.grpc.InternalChannelz;
import org.apache.rocketmq.shaded.io.grpc.InternalGlobalInterceptors;
import org.apache.rocketmq.shaded.io.grpc.Server;
import org.apache.rocketmq.shaded.io.grpc.ServerBuilder;
import org.apache.rocketmq.shaded.io.grpc.ServerCallExecutorSupplier;
import org.apache.rocketmq.shaded.io.grpc.ServerInterceptor;
import org.apache.rocketmq.shaded.io.grpc.ServerMethodDefinition;
import org.apache.rocketmq.shaded.io.grpc.ServerServiceDefinition;
import org.apache.rocketmq.shaded.io.grpc.ServerStreamTracer;
import org.apache.rocketmq.shaded.io.grpc.ServerTransportFilter;
import java.io.File;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Nullable;
/**
* Default builder for {@link org.apache.rocketmq.shaded.io.grpc.Server} instances, for usage in Transport implementations.
*/
public final class ServerImplBuilder extends ServerBuilder {
private static final Logger log = Logger.getLogger(ServerImplBuilder.class.getName());
@DoNotCall("ClientTransportServersBuilder is required, use a constructor")
public static ServerBuilder forPort(int port) {
throw new UnsupportedOperationException(
"ClientTransportServersBuilder is required, use a constructor");
}
// defaults
private static final ObjectPool DEFAULT_EXECUTOR_POOL =
SharedResourcePool.forResource(GrpcUtil.SHARED_CHANNEL_EXECUTOR);
private static final HandlerRegistry DEFAULT_FALLBACK_REGISTRY = new DefaultFallbackRegistry();
private static final DecompressorRegistry DEFAULT_DECOMPRESSOR_REGISTRY =
DecompressorRegistry.getDefaultInstance();
private static final CompressorRegistry DEFAULT_COMPRESSOR_REGISTRY =
CompressorRegistry.getDefaultInstance();
private static final long DEFAULT_HANDSHAKE_TIMEOUT_MILLIS = TimeUnit.SECONDS.toMillis(120);
// mutable state
final InternalHandlerRegistry.Builder registryBuilder =
new InternalHandlerRegistry.Builder();
final List transportFilters = new ArrayList<>();
final List interceptors = new ArrayList<>();
private final List streamTracerFactories = new ArrayList<>();
private final ClientTransportServersBuilder clientTransportServersBuilder;
HandlerRegistry fallbackRegistry = DEFAULT_FALLBACK_REGISTRY;
ObjectPool executorPool = DEFAULT_EXECUTOR_POOL;
DecompressorRegistry decompressorRegistry = DEFAULT_DECOMPRESSOR_REGISTRY;
CompressorRegistry compressorRegistry = DEFAULT_COMPRESSOR_REGISTRY;
long handshakeTimeoutMillis = DEFAULT_HANDSHAKE_TIMEOUT_MILLIS;
Deadline.Ticker ticker = Deadline.getSystemTicker();
private boolean statsEnabled = true;
private boolean recordStartedRpcs = true;
private boolean recordFinishedRpcs = true;
private boolean recordRealTimeMetrics = false;
private boolean tracingEnabled = true;
@Nullable BinaryLog binlog;
InternalChannelz channelz = InternalChannelz.instance();
CallTracer.Factory callTracerFactory = CallTracer.getDefaultFactory();
@Nullable
ServerCallExecutorSupplier executorSupplier;
/**
* An interface to provide to provide transport specific information for the server. This method
* is meant for Transport implementors and should not be used by normal users.
*/
public interface ClientTransportServersBuilder {
InternalServer buildClientTransportServers(
List streamTracerFactories);
}
/**
* Creates a new server builder with given transport servers provider.
*/
public ServerImplBuilder(ClientTransportServersBuilder clientTransportServersBuilder) {
this.clientTransportServersBuilder = checkNotNull(clientTransportServersBuilder,
"clientTransportServersBuilder");
}
@Override
public ServerImplBuilder directExecutor() {
return executor(MoreExecutors.directExecutor());
}
@Override
public ServerImplBuilder executor(@Nullable Executor executor) {
this.executorPool = executor != null ? new FixedObjectPool<>(executor) : DEFAULT_EXECUTOR_POOL;
return this;
}
@Override
public ServerImplBuilder callExecutor(ServerCallExecutorSupplier executorSupplier) {
this.executorSupplier = checkNotNull(executorSupplier);
return this;
}
@Override
public ServerImplBuilder addService(ServerServiceDefinition service) {
registryBuilder.addService(checkNotNull(service, "service"));
return this;
}
@Override
public ServerImplBuilder addService(BindableService bindableService) {
return addService(checkNotNull(bindableService, "bindableService").bindService());
}
@Override
public ServerImplBuilder addTransportFilter(ServerTransportFilter filter) {
transportFilters.add(checkNotNull(filter, "filter"));
return this;
}
@Override
public ServerImplBuilder intercept(ServerInterceptor interceptor) {
interceptors.add(checkNotNull(interceptor, "interceptor"));
return this;
}
@Override
public ServerImplBuilder addStreamTracerFactory(ServerStreamTracer.Factory factory) {
streamTracerFactories.add(checkNotNull(factory, "factory"));
return this;
}
@Override
public ServerImplBuilder fallbackHandlerRegistry(@Nullable HandlerRegistry registry) {
this.fallbackRegistry = registry != null ? registry : DEFAULT_FALLBACK_REGISTRY;
return this;
}
@Override
public ServerImplBuilder decompressorRegistry(@Nullable DecompressorRegistry registry) {
this.decompressorRegistry = registry != null ? registry : DEFAULT_DECOMPRESSOR_REGISTRY;
return this;
}
@Override
public ServerImplBuilder compressorRegistry(@Nullable CompressorRegistry registry) {
this.compressorRegistry = registry != null ? registry : DEFAULT_COMPRESSOR_REGISTRY;
return this;
}
@Override
public ServerImplBuilder handshakeTimeout(long timeout, TimeUnit unit) {
checkArgument(timeout > 0, "handshake timeout is %s, but must be positive", timeout);
this.handshakeTimeoutMillis = checkNotNull(unit, "unit").toMillis(timeout);
return this;
}
@Override
public ServerImplBuilder setBinaryLog(@Nullable BinaryLog binaryLog) {
this.binlog = binaryLog;
return this;
}
/**
* Disable or enable stats features. Enabled by default.
*/
public void setStatsEnabled(boolean value) {
this.statsEnabled = value;
}
/**
* Disable or enable stats recording for RPC upstarts. Effective only if {@link
* #setStatsEnabled} is set to true. Enabled by default.
*/
public void setStatsRecordStartedRpcs(boolean value) {
recordStartedRpcs = value;
}
/**
* Disable or enable stats recording for RPC completions. Effective only if {@link
* #setStatsEnabled} is set to true. Enabled by default.
*/
public void setStatsRecordFinishedRpcs(boolean value) {
recordFinishedRpcs = value;
}
/**
* Disable or enable real-time metrics recording. Effective only if {@link #setStatsEnabled} is
* set to true. Disabled by default.
*/
public void setStatsRecordRealTimeMetrics(boolean value) {
recordRealTimeMetrics = value;
}
/**
* Disable or enable tracing features. Enabled by default.
*/
public void setTracingEnabled(boolean value) {
tracingEnabled = value;
}
/**
* Sets a custom deadline ticker. This should only be called from InProcessServerBuilder.
*/
public void setDeadlineTicker(Deadline.Ticker ticker) {
this.ticker = checkNotNull(ticker, "ticker");
}
@Override
public Server build() {
return new ServerImpl(this,
clientTransportServersBuilder.buildClientTransportServers(getTracerFactories()),
Context.ROOT);
}
@VisibleForTesting
List getTracerFactories() {
ArrayList tracerFactories = new ArrayList<>();
boolean isGlobalInterceptorsTracersSet = false;
List globalServerInterceptors
= InternalGlobalInterceptors.getServerInterceptors();
List globalServerStreamTracerFactories
= InternalGlobalInterceptors.getServerStreamTracerFactories();
if (globalServerInterceptors != null) {
tracerFactories.addAll(globalServerStreamTracerFactories);
interceptors.addAll(globalServerInterceptors);
isGlobalInterceptorsTracersSet = true;
}
if (!isGlobalInterceptorsTracersSet && statsEnabled) {
ServerStreamTracer.Factory censusStatsTracerFactory = null;
try {
Class censusStatsAccessor =
Class.forName("org.apache.rocketmq.shaded.io.grpc.census.InternalCensusStatsAccessor");
Method getServerStreamTracerFactoryMethod =
censusStatsAccessor.getDeclaredMethod(
"getServerStreamTracerFactory",
boolean.class,
boolean.class,
boolean.class);
censusStatsTracerFactory =
(ServerStreamTracer.Factory) getServerStreamTracerFactoryMethod
.invoke(
null,
recordStartedRpcs,
recordFinishedRpcs,
recordRealTimeMetrics);
} catch (ClassNotFoundException e) {
// Replace these separate catch statements with multicatch when Android min-API >= 19
log.log(Level.FINE, "Unable to apply census stats", e);
} catch (NoSuchMethodException e) {
log.log(Level.FINE, "Unable to apply census stats", e);
} catch (IllegalAccessException e) {
log.log(Level.FINE, "Unable to apply census stats", e);
} catch (InvocationTargetException e) {
log.log(Level.FINE, "Unable to apply census stats", e);
}
if (censusStatsTracerFactory != null) {
tracerFactories.add(censusStatsTracerFactory);
}
}
if (!isGlobalInterceptorsTracersSet && tracingEnabled) {
ServerStreamTracer.Factory tracingStreamTracerFactory = null;
try {
Class censusTracingAccessor =
Class.forName("org.apache.rocketmq.shaded.io.grpc.census.InternalCensusTracingAccessor");
Method getServerStreamTracerFactoryMethod =
censusTracingAccessor.getDeclaredMethod("getServerStreamTracerFactory");
tracingStreamTracerFactory =
(ServerStreamTracer.Factory) getServerStreamTracerFactoryMethod.invoke(null);
} catch (ClassNotFoundException e) {
// Replace these separate catch statements with multicatch when Android min-API >= 19
log.log(Level.FINE, "Unable to apply census stats", e);
} catch (NoSuchMethodException e) {
log.log(Level.FINE, "Unable to apply census stats", e);
} catch (IllegalAccessException e) {
log.log(Level.FINE, "Unable to apply census stats", e);
} catch (InvocationTargetException e) {
log.log(Level.FINE, "Unable to apply census stats", e);
}
if (tracingStreamTracerFactory != null) {
tracerFactories.add(tracingStreamTracerFactory);
}
}
tracerFactories.addAll(streamTracerFactories);
tracerFactories.trimToSize();
return Collections.unmodifiableList(tracerFactories);
}
public InternalChannelz getChannelz() {
return channelz;
}
private static final class DefaultFallbackRegistry extends HandlerRegistry {
@Override
public List getServices() {
return Collections.emptyList();
}
@Nullable
@Override
public ServerMethodDefinition lookupMethod(
String methodName, @Nullable String authority) {
return null;
}
}
/**
* Returns the internal ExecutorPool for offloading tasks.
*/
public ObjectPool getExecutorPool() {
return this.executorPool;
}
@Override
public ServerImplBuilder useTransportSecurity(File certChain, File privateKey) {
throw new UnsupportedOperationException("TLS not supported in ServerImplBuilder");
}
}