/**
* 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.drill.exec.rpc;
import java.util.Map;
import java.util.concurrent.Executor;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.google.protobuf.Internal.EnumLite;
import com.google.protobuf.MessageLite;
public class RpcConfig {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(RpcConfig.class);
private final String name;
private final int timeout;
private final Map<EnumLite, RpcMessageType<?, ?, ?>> sendMap;
private final Map<Integer, RpcMessageType<?, ?, ?>> receiveMap;
private final Executor executor;
private RpcConfig(String name, Map<EnumLite, RpcMessageType<?, ?, ?>> sendMap,
Map<Integer, RpcMessageType<?, ?, ?>> receiveMap, int timeout, Executor executor) {
Preconditions.checkNotNull(executor, "Executor must be defined.");
this.name = name;
this.timeout = timeout;
this.sendMap = ImmutableMap.copyOf(sendMap);
this.receiveMap = ImmutableMap.copyOf(receiveMap);
this.executor = executor;
}
public String getName() {
return name;
}
public int getTimeout() {
return timeout;
}
public boolean hasTimeout() {
return timeout > 0;
}
public Executor getExecutor() {
return executor;
}
public boolean checkReceive(int rpcType, Class<?> receiveClass) {
if (RpcConstants.EXTRA_DEBUGGING) {
logger.debug(String.format("Checking reception for rpcType %d and receive class %s.", rpcType, receiveClass));
}
RpcMessageType<?,?,?> type = receiveMap.get(rpcType);
if (type == null) {
throw new IllegalStateException(String.format("%s: There is no defined RpcMessage type for a Rpc receive type number of %s.", name, rpcType));
}
if (receiveClass != type.getRet()) {
throw new IllegalStateException(String.format("%s: The definition for receive doesn't match implementation code. The definition is %s however the current receive for this type was of type %s.", name, type, receiveClass.getCanonicalName()));
}
return true;
}
public boolean checkSend(EnumLite send, Class<?> sendClass, Class<?> receiveClass) {
if (RpcConstants.EXTRA_DEBUGGING) {
logger.debug(String.format("Checking send classes for send RpcType %s. Send Class is %s and Receive class is %s.", send, sendClass, receiveClass));
}
RpcMessageType<?,?,?> type = sendMap.get(send);
if (type == null) {
throw new IllegalStateException(String.format("%s: There is no defined RpcMessage type for a Rpc send type of %s.", name, send));
}
if (type.getSend() != sendClass) {
throw new IllegalStateException(String.format("%s: The definition for send doesn't match implementation code. The definition is %s however the current send is trying to send an object of type %s.", name, type, sendClass.getCanonicalName()));
}
if (type.getRet() != receiveClass) {
throw new IllegalStateException(String.format("%s: The definition for send doesn't match implementation code. The definition is %s however the current send is trying to setup an expected reception of an object of type %s.", name, type, receiveClass.getCanonicalName()));
}
return true;
}
public boolean checkResponseSend(EnumLite responseType, Class<?> responseClass) {
if (RpcConstants.EXTRA_DEBUGGING) {
logger.debug(String.format("Checking responce send of type %s with response class of %s.", responseType, responseClass));
}
RpcMessageType<?,?,?> type = receiveMap.get(responseType.getNumber());
if (type == null) {
throw new IllegalStateException(String.format("%s: There is no defined RpcMessage type for a Rpc response of type %s.", name, responseType));
}
if (type.getRet() != responseClass) {
throw new IllegalStateException(String.format("%s: The definition for the response doesn't match implementation code. The definition is %s however the current response is trying to response with an object of type %s.", name, type, responseClass.getCanonicalName()));
}
return true;
}
public static class RpcMessageType<SEND extends MessageLite, RECEIVE extends MessageLite, T extends EnumLite>{
private T sendEnum;
private Class<SEND> send;
private T receiveEnum;
private Class<RECEIVE> ret;
public RpcMessageType(T sendEnum, Class<SEND> send, T receiveEnum, Class<RECEIVE> ret) {
super();
this.sendEnum = sendEnum;
this.send = send;
this.receiveEnum = receiveEnum;
this.ret = ret;
}
public Class<SEND> getSend() {
return send;
}
public void setSend(Class<SEND> send) {
this.send = send;
}
public T getSendEnum() {
return sendEnum;
}
public void setSendEnum(T sendEnum) {
this.sendEnum = sendEnum;
}
public Class<RECEIVE> getRet() {
return ret;
}
public void setRet(Class<RECEIVE> ret) {
this.ret = ret;
}
public T getReceiveEnum() {
return receiveEnum;
}
public void setReceiveEnum(T receiveEnum) {
this.receiveEnum = receiveEnum;
}
@Override
public String toString() {
return "RpcMessageType [sendEnum=" + sendEnum + ", send=" + send + ", receiveEnum=" + receiveEnum + ", ret="
+ ret + "]";
}
}
public static RpcConfigBuilder newBuilder() {
return new RpcConfigBuilder();
}
public static class RpcConfigBuilder {
private String name;
private int timeout = -1;
private Executor executor;
private Map<EnumLite, RpcMessageType<?, ?, ?>> sendMap = Maps.newHashMap();
private Map<Integer, RpcMessageType<?, ?, ?>> receiveMap = Maps.newHashMap();
private RpcConfigBuilder() {
}
public RpcConfigBuilder name(String name) {
this.name = name;
return this;
}
public RpcConfigBuilder timeout(int timeoutInSeconds) {
this.timeout = timeoutInSeconds;
return this;
}
public <SEND extends MessageLite, RECEIVE extends MessageLite, T extends EnumLite> RpcConfigBuilder add(T sendEnum, Class<SEND> send, T receiveEnum, Class<RECEIVE> rec) {
RpcMessageType<SEND, RECEIVE, T> type = new RpcMessageType<SEND, RECEIVE, T>(sendEnum, send, receiveEnum, rec);
this.sendMap.put(sendEnum, type);
this.receiveMap.put(receiveEnum.getNumber(), type);
return this;
}
public RpcConfigBuilder executor(Executor executor) {
this.executor = executor;
return this;
}
public RpcConfig build() {
Preconditions.checkArgument(timeout > -1, "Timeout must be a positive number or zero for disabled.");
Preconditions.checkArgument(name != null, "RpcConfig name must be set.");
return new RpcConfig(name, sendMap, receiveMap, timeout, executor);
}
}
}