com.facebook.buck.distributed.ThriftOverHttp.java Source code

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Here is the source code for com.facebook.buck.distributed.ThriftOverHttp.java

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/*
 * Copyright 2016-present Facebook, Inc.
 *
 * 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 com.facebook.buck.distributed;

import com.facebook.buck.log.Logger;

import org.apache.thrift.TBase;
import org.apache.thrift.TException;
import org.apache.thrift.TSerializer;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TCompactProtocol;
import org.apache.thrift.protocol.TJSONProtocol;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.protocol.TSimpleJSONProtocol;
import org.apache.thrift.transport.THttpClient;
import org.apache.thrift.transport.TTransportException;

public class ThriftOverHttp implements AutoCloseable {
    private static final Logger LOG = Logger.get(ThriftOverHttp.class);
    private static final int READ_TIMEOUT_MS = 50000;
    private THttpClient transport;
    private TProtocol proto;

    public enum Encoding {
        json, binary, compact
    }

    public ThriftOverHttp(String uri, Encoding type) throws TTransportException {
        transport = new THttpClient(uri);
        transport.setReadTimeout(READ_TIMEOUT_MS);
        transport.setCustomHeader("X-Thrift-Protocol", type.toString());
        transport.open();
        switch (type) {
        case json:
            proto = new TJSONProtocol(transport);
            break;
        case compact:
            proto = new TCompactProtocol(transport);
            break;
        case binary:
        default:
            proto = new TBinaryProtocol(transport);
            break;
        }
    }

    public void writeAndSend(TBase<?, ?> struct) throws TException {
        this.write(struct);
        this.flush();
    }

    public void write(TBase<?, ?> struct) throws TException {
        LOG.debug("sending: " + jsonize(struct));
        struct.write(proto);
    }

    public void flush() throws TTransportException {
        transport.flush();
    }

    public void read(TBase<?, ?> struct) throws TException {
        struct.read(proto);
        LOG.debug("received: " + jsonize(struct));
    }

    @Override
    public void close() throws Exception {
        transport.close();
    }

    public String jsonize(TBase<?, ?> struct) throws TException {
        TSerializer serializer = new TSerializer(new TSimpleJSONProtocol.Factory());
        return new String(serializer.serialize(struct));
    }
}