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/*
* Copyright (c) 2015 Uber Technologies, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.uber.tchannel.messages;
import com.uber.tchannel.headers.ArgScheme;
import com.uber.tchannel.utils.TChannelUtilities;
import io.netty.buffer.ByteBuf;
import java.util.HashMap;
import java.util.Map;
public abstract class EncodedRequest extends Request {
private static final Serializer serializer = new Serializer(new HashMap() {
{
put(ArgScheme.JSON, new JSONSerializer());
put(ArgScheme.THRIFT, new ThriftSerializer());
}
});
protected Map headers;
protected T body = null;
protected EncodedRequest(Builder builder) {
super(builder);
this.body = builder.body;
this.headers = builder.headers;
}
protected EncodedRequest(long id, long ttl,
String service, Map transportHeaders,
ByteBuf arg1, ByteBuf arg2, ByteBuf arg3) {
super(id, ttl, service, transportHeaders, arg1, arg2, arg3);
}
public Map getHeaders() {
if (headers == null) {
if (arg2 != null) {
headers = serializer.decodeHeaders(this);
} else {
return new HashMap<>();
}
}
return headers;
}
public String getHeader(String key) {
return getHeaders().get(key);
}
public T getBody(Class bodyType) {
if (body == null) {
if (arg3 != null) {
body = serializer.decodeBody(this, bodyType);
} else {
return null;
}
}
return body;
}
public static class Builder extends Request.Builder {
protected Map headers = new HashMap<>();
protected T body = null;
protected ArgScheme argScheme;
public Builder(String service, String endpoint) {
super(service, endpoint);
}
public Builder(String service, ByteBuf arg1) {
super(service, arg1);
}
@Override
public Builder setArg2(ByteBuf arg2) {
if (arg2 != null && !this.headers.isEmpty()) {
throw new IllegalStateException("Cannot set both `arg2` and `headers`.");
}
super.setArg2(arg2);
return this;
}
@Override
public Builder setArg3(ByteBuf arg3) {
if (arg3 != null && this.body != null) {
throw new IllegalStateException("Cannot set both `arg3` and `body`.");
}
super.setArg3(arg3);
return this;
}
public Builder setHeader(String key, String value) {
this.headers.put(key, value);
return this;
}
public Builder setHeaders(Map headers) {
this.headers = headers;
return this;
}
public Builder setBody(T body) {
this.body = body;
return this;
}
private Builder validateHeader() {
if (arg2 != null) {
headers = null;
return this;
}
arg2 = serializer.encodeHeaders(this.headers, argScheme);
return this;
}
private Builder validateBody() {
if (arg3 != null) {
body = null;
return this;
}
if (body == null) {
arg3 = TChannelUtilities.emptyByteBuf;
} else {
arg3 = serializer.encodeBody(this.body, argScheme);
}
return this;
}
public Builder validate() {
super.validate();
this.validateHeader();
this.validateBody();
return this;
}
}
}
