thrift:swift项目笔记

先声明：此swift不是Apple公司的那个swift开发语言，而是facebook的另一个开源项目。

facebook的thrift IDL文件，如果默认用thrift -gen java生成java代码，代码十分冗长，大家可以先感受一下。
一、IDL文件

service HelloService{
    string ping()
}

二、thrift命令生成的HelloService.java

/**
 * Autogenerated by Thrift Compiler (0.9.3)
 *
 * DO NOT EDIT UNLESS YOU ARE SURE THAT YOU KNOW WHAT YOU ARE DOING
 *  @generated
 */
import org.apache.thrift.scheme.IScheme;
import org.apache.thrift.scheme.SchemeFactory;
import org.apache.thrift.scheme.StandardScheme;

import org.apache.thrift.scheme.TupleScheme;
import org.apache.thrift.protocol.TTupleProtocol;
import org.apache.thrift.protocol.TProtocolException;
import org.apache.thrift.EncodingUtils;
import org.apache.thrift.TException;
import org.apache.thrift.async.AsyncMethodCallback;
import org.apache.thrift.server.AbstractNonblockingServer.*;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;
import java.util.EnumMap;
import java.util.Set;
import java.util.HashSet;
import java.util.EnumSet;
import java.util.Collections;
import java.util.BitSet;
import java.nio.ByteBuffer;
import java.util.Arrays;
import javax.annotation.Generated;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@SuppressWarnings({"cast", "rawtypes", "serial", "unchecked"})
@Generated(value = "Autogenerated by Thrift Compiler (0.9.3)", date = "2016-03-22")
public class HelloService {

  public interface Iface {

    public String ping() throws org.apache.thrift.TException;

  }

  public interface AsyncIface {

    public void ping(org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException;

  }

  public static class Client extends org.apache.thrift.TServiceClient implements Iface {
    public static class Factory implements org.apache.thrift.TServiceClientFactory<Client> {
      public Factory() {}
      public Client getClient(org.apache.thrift.protocol.TProtocol prot) {
        return new Client(prot);
      }
      public Client getClient(org.apache.thrift.protocol.TProtocol iprot, org.apache.thrift.protocol.TProtocol oprot) {
        return new Client(iprot, oprot);
      }
    }

    public Client(org.apache.thrift.protocol.TProtocol prot)
    {
      super(prot, prot);
    }

    public Client(org.apache.thrift.protocol.TProtocol iprot, org.apache.thrift.protocol.TProtocol oprot) {
      super(iprot, oprot);
    }

    public String ping() throws org.apache.thrift.TException
    {
      send_ping();
      return recv_ping();
    }

    public void send_ping() throws org.apache.thrift.TException
    {
      ping_args args = new ping_args();
      sendBase("ping", args);
    }

    public String recv_ping() throws org.apache.thrift.TException
    {
      ping_result result = new ping_result();
      receiveBase(result, "ping");
      if (result.isSetSuccess()) {
        return result.success;
      }
      throw new org.apache.thrift.TApplicationException(org.apache.thrift.TApplicationException.MISSING_RESULT, "ping failed: unknown result");
    }

  }
  public static class AsyncClient extends org.apache.thrift.async.TAsyncClient implements AsyncIface {
    public static class Factory implements org.apache.thrift.async.TAsyncClientFactory<AsyncClient> {
      private org.apache.thrift.async.TAsyncClientManager clientManager;
      private org.apache.thrift.protocol.TProtocolFactory protocolFactory;
      public Factory(org.apache.thrift.async.TAsyncClientManager clientManager, org.apache.thrift.protocol.TProtocolFactory protocolFactory) {
        this.clientManager = clientManager;
        this.protocolFactory = protocolFactory;
      }
      public AsyncClient getAsyncClient(org.apache.thrift.transport.TNonblockingTransport transport) {
        return new AsyncClient(protocolFactory, clientManager, transport);
      }
    }

    public AsyncClient(org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.async.TAsyncClientManager clientManager, org.apache.thrift.transport.TNonblockingTransport transport) {
      super(protocolFactory, clientManager, transport);
    }

    public void ping(org.apache.thrift.async.AsyncMethodCallback resultHandler) throws org.apache.thrift.TException {
      checkReady();
      ping_call method_call = new ping_call(resultHandler, this, ___protocolFactory, ___transport);
      this.___currentMethod = method_call;
      ___manager.call(method_call);
    }

    public static class ping_call extends org.apache.thrift.async.TAsyncMethodCall {
      public ping_call(org.apache.thrift.async.AsyncMethodCallback resultHandler, org.apache.thrift.async.TAsyncClient client, org.apache.thrift.protocol.TProtocolFactory protocolFactory, org.apache.thrift.transport.TNonblockingTransport transport) throws org.apache.thrift.TException {
        super(client, protocolFactory, transport, resultHandler, false);
      }

      public void write_args(org.apache.thrift.protocol.TProtocol prot) throws org.apache.thrift.TException {
        prot.writeMessageBegin(new org.apache.thrift.protocol.TMessage("ping", org.apache.thrift.protocol.TMessageType.CALL, 0));
        ping_args args = new ping_args();
        args.write(prot);
        prot.writeMessageEnd();
      }

      public String getResult() throws org.apache.thrift.TException {
        if (getState() != org.apache.thrift.async.TAsyncMethodCall.State.RESPONSE_READ) {
          throw new IllegalStateException("Method call not finished!");
        }
        org.apache.thrift.transport.TMemoryInputTransport memoryTransport = new org.apache.thrift.transport.TMemoryInputTransport(getFrameBuffer().array());
        org.apache.thrift.protocol.TProtocol prot = client.getProtocolFactory().getProtocol(memoryTransport);
        return (new Client(prot)).recv_ping();
      }
    }

  }

  public static class Processor<I extends Iface> extends org.apache.thrift.TBaseProcessor<I> implements org.apache.thrift.TProcessor {
    private static final Logger LOGGER = LoggerFactory.getLogger(Processor.class.getName());
    public Processor(I iface) {
      super(iface, getProcessMap(new HashMap<String, org.apache.thrift.ProcessFunction<I, ? extends org.apache.thrift.TBase>>()));
    }

    protected Processor(I iface, Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> processMap) {
      super(iface, getProcessMap(processMap));
    }

    private static <I extends Iface> Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> getProcessMap(Map<String,  org.apache.thrift.ProcessFunction<I, ? extends  org.apache.thrift.TBase>> processMap) {
      processMap.put("ping", new ping());
      return processMap;
    }

    public static class ping<I extends Iface> extends org.apache.thrift.ProcessFunction<I, ping_args> {
      public ping() {
        super("ping");
      }

      public ping_args getEmptyArgsInstance() {
        return new ping_args();
      }

      protected boolean isOneway() {
        return false;
      }

      public ping_result getResult(I iface, ping_args args) throws org.apache.thrift.TException {
        ping_result result = new ping_result();
        result.success = iface.ping();
        return result;
      }
    }

  }

  public static class AsyncProcessor<I extends AsyncIface> extends org.apache.thrift.TBaseAsyncProcessor<I> {
    private static final Logger LOGGER = LoggerFactory.getLogger(AsyncProcessor.class.getName());
    public AsyncProcessor(I iface) {
      super(iface, getProcessMap(new HashMap<String, org.apache.thrift.AsyncProcessFunction<I, ? extends org.apache.thrift.TBase, ?>>()));
    }

    protected AsyncProcessor(I iface, Map<String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase, ?>> processMap) {
      super(iface, getProcessMap(processMap));
    }

    private static <I extends AsyncIface> Map<String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase,?>> getProcessMap(Map<String,  org.apache.thrift.AsyncProcessFunction<I, ? extends  org.apache.thrift.TBase, ?>> processMap) {
      processMap.put("ping", new ping());
      return processMap;
    }

    public static class ping<I extends AsyncIface> extends org.apache.thrift.AsyncProcessFunction<I, ping_args, String> {
      public ping() {
        super("ping");
      }

      public ping_args getEmptyArgsInstance() {
        return new ping_args();
      }

      public AsyncMethodCallback<String> getResultHandler(final AsyncFrameBuffer fb, final int seqid) {
        final org.apache.thrift.AsyncProcessFunction fcall = this;
        return new AsyncMethodCallback<String>() {
          public void onComplete(String o) {
            ping_result result = new ping_result();
            result.success = o;
            try {
              fcall.sendResponse(fb,result, org.apache.thrift.protocol.TMessageType.REPLY,seqid);
              return;
            } catch (Exception e) {
              LOGGER.error("Exception writing to internal frame buffer", e);
            }
            fb.close();
          }
          public void onError(Exception e) {
            byte msgType = org.apache.thrift.protocol.TMessageType.REPLY;
            org.apache.thrift.TBase msg;
            ping_result result = new ping_result();
            {
              msgType = org.apache.thrift.protocol.TMessageType.EXCEPTION;
              msg = (org.apache.thrift.TBase)new org.apache.thrift.TApplicationException(org.apache.thrift.TApplicationException.INTERNAL_ERROR, e.getMessage());
            }
            try {
              fcall.sendResponse(fb,msg,msgType,seqid);
              return;
            } catch (Exception ex) {
              LOGGER.error("Exception writing to internal frame buffer", ex);
            }
            fb.close();
          }
        };
      }

      protected boolean isOneway() {
        return false;
      }

      public void start(I iface, ping_args args, org.apache.thrift.async.AsyncMethodCallback<String> resultHandler) throws TException {
        iface.ping(resultHandler);
      }
    }

  }

  public static class ping_args implements org.apache.thrift.TBase<ping_args, ping_args._Fields>, java.io.Serializable, Cloneable, Comparable<ping_args>   {
    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("ping_args");

    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
    static {
      schemes.put(StandardScheme.class, new ping_argsStandardSchemeFactory());
      schemes.put(TupleScheme.class, new ping_argsTupleSchemeFactory());
    }

    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
    public enum _Fields implements org.apache.thrift.TFieldIdEnum {
;

      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();

      static {
        for (_Fields field : EnumSet.allOf(_Fields.class)) {
          byName.put(field.getFieldName(), field);
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, or null if its not found.
       */
      public static _Fields findByThriftId(int fieldId) {
        switch(fieldId) {
          default:
            return null;
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, throwing an exception
       * if it is not found.
       */
      public static _Fields findByThriftIdOrThrow(int fieldId) {
        _Fields fields = findByThriftId(fieldId);
        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
        return fields;
      }

      /**
       * Find the _Fields constant that matches name, or null if its not found.
       */
      public static _Fields findByName(String name) {
        return byName.get(name);
      }

      private final short _thriftId;
      private final String _fieldName;

      _Fields(short thriftId, String fieldName) {
        _thriftId = thriftId;
        _fieldName = fieldName;
      }

      public short getThriftFieldId() {
        return _thriftId;
      }

      public String getFieldName() {
        return _fieldName;
      }
    }
    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
    static {
      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
      metaDataMap = Collections.unmodifiableMap(tmpMap);
      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(ping_args.class, metaDataMap);
    }

    public ping_args() {
    }

    /**
     * Performs a deep copy on <i>other</i>.
     */
    public ping_args(ping_args other) {
    }

    public ping_args deepCopy() {
      return new ping_args(this);
    }

    @Override
    public void clear() {
    }

    public void setFieldValue(_Fields field, Object value) {
      switch (field) {
      }
    }

    public Object getFieldValue(_Fields field) {
      switch (field) {
      }
      throw new IllegalStateException();
    }

    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
    public boolean isSet(_Fields field) {
      if (field == null) {
        throw new IllegalArgumentException();
      }

      switch (field) {
      }
      throw new IllegalStateException();
    }

    @Override
    public boolean equals(Object that) {
      if (that == null)
        return false;
      if (that instanceof ping_args)
        return this.equals((ping_args)that);
      return false;
    }

    public boolean equals(ping_args that) {
      if (that == null)
        return false;

      return true;
    }

    @Override
    public int hashCode() {
      List<Object> list = new ArrayList<Object>();

      return list.hashCode();
    }

    @Override
    public int compareTo(ping_args other) {
      if (!getClass().equals(other.getClass())) {
        return getClass().getName().compareTo(other.getClass().getName());
      }

      int lastComparison = 0;

      return 0;
    }

    public _Fields fieldForId(int fieldId) {
      return _Fields.findByThriftId(fieldId);
    }

    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
    }

    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
    }

    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder("ping_args(");
      boolean first = true;

      sb.append(")");
      return sb.toString();
    }

    public void validate() throws org.apache.thrift.TException {
      // check for required fields
      // check for sub-struct validity
    }

    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
      try {
        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
      try {
        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private static class ping_argsStandardSchemeFactory implements SchemeFactory {
      public ping_argsStandardScheme getScheme() {
        return new ping_argsStandardScheme();
      }
    }

    private static class ping_argsStandardScheme extends StandardScheme<ping_args> {

      public void read(org.apache.thrift.protocol.TProtocol iprot, ping_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TField schemeField;
        iprot.readStructBegin();
        while (true)
        {
          schemeField = iprot.readFieldBegin();
          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) {
            break;
          }
          switch (schemeField.id) {
            default:
              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
          }
          iprot.readFieldEnd();
        }
        iprot.readStructEnd();

        // check for required fields of primitive type, which can't be checked in the validate method
        struct.validate();
      }

      public void write(org.apache.thrift.protocol.TProtocol oprot, ping_args struct) throws org.apache.thrift.TException {
        struct.validate();

        oprot.writeStructBegin(STRUCT_DESC);
        oprot.writeFieldStop();
        oprot.writeStructEnd();
      }

    }

    private static class ping_argsTupleSchemeFactory implements SchemeFactory {
      public ping_argsTupleScheme getScheme() {
        return new ping_argsTupleScheme();
      }
    }

    private static class ping_argsTupleScheme extends TupleScheme<ping_args> {

      @Override
      public void write(org.apache.thrift.protocol.TProtocol prot, ping_args struct) throws org.apache.thrift.TException {
        TTupleProtocol oprot = (TTupleProtocol) prot;
      }

      @Override
      public void read(org.apache.thrift.protocol.TProtocol prot, ping_args struct) throws org.apache.thrift.TException {
        TTupleProtocol iprot = (TTupleProtocol) prot;
      }
    }

  }

  public static class ping_result implements org.apache.thrift.TBase<ping_result, ping_result._Fields>, java.io.Serializable, Cloneable, Comparable<ping_result>   {
    private static final org.apache.thrift.protocol.TStruct STRUCT_DESC = new org.apache.thrift.protocol.TStruct("ping_result");

    private static final org.apache.thrift.protocol.TField SUCCESS_FIELD_DESC = new org.apache.thrift.protocol.TField("success", org.apache.thrift.protocol.TType.STRING, (short)0);

    private static final Map<Class<? extends IScheme>, SchemeFactory> schemes = new HashMap<Class<? extends IScheme>, SchemeFactory>();
    static {
      schemes.put(StandardScheme.class, new ping_resultStandardSchemeFactory());
      schemes.put(TupleScheme.class, new ping_resultTupleSchemeFactory());
    }

    public String success; // required

    /** The set of fields this struct contains, along with convenience methods for finding and manipulating them. */
    public enum _Fields implements org.apache.thrift.TFieldIdEnum {
      SUCCESS((short)0, "success");

      private static final Map<String, _Fields> byName = new HashMap<String, _Fields>();

      static {
        for (_Fields field : EnumSet.allOf(_Fields.class)) {
          byName.put(field.getFieldName(), field);
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, or null if its not found.
       */
      public static _Fields findByThriftId(int fieldId) {
        switch(fieldId) {
          case 0: // SUCCESS
            return SUCCESS;
          default:
            return null;
        }
      }

      /**
       * Find the _Fields constant that matches fieldId, throwing an exception
       * if it is not found.
       */
      public static _Fields findByThriftIdOrThrow(int fieldId) {
        _Fields fields = findByThriftId(fieldId);
        if (fields == null) throw new IllegalArgumentException("Field " + fieldId + " doesn't exist!");
        return fields;
      }

      /**
       * Find the _Fields constant that matches name, or null if its not found.
       */
      public static _Fields findByName(String name) {
        return byName.get(name);
      }

      private final short _thriftId;
      private final String _fieldName;

      _Fields(short thriftId, String fieldName) {
        _thriftId = thriftId;
        _fieldName = fieldName;
      }

      public short getThriftFieldId() {
        return _thriftId;
      }

      public String getFieldName() {
        return _fieldName;
      }
    }

    // isset id assignments
    public static final Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> metaDataMap;
    static {
      Map<_Fields, org.apache.thrift.meta_data.FieldMetaData> tmpMap = new EnumMap<_Fields, org.apache.thrift.meta_data.FieldMetaData>(_Fields.class);
      tmpMap.put(_Fields.SUCCESS, new org.apache.thrift.meta_data.FieldMetaData("success", org.apache.thrift.TFieldRequirementType.DEFAULT,
          new org.apache.thrift.meta_data.FieldValueMetaData(org.apache.thrift.protocol.TType.STRING)));
      metaDataMap = Collections.unmodifiableMap(tmpMap);
      org.apache.thrift.meta_data.FieldMetaData.addStructMetaDataMap(ping_result.class, metaDataMap);
    }

    public ping_result() {
    }

    public ping_result(
      String success)
    {
      this();
      this.success = success;
    }

    /**
     * Performs a deep copy on <i>other</i>.
     */
    public ping_result(ping_result other) {
      if (other.isSetSuccess()) {
        this.success = other.success;
      }
    }

    public ping_result deepCopy() {
      return new ping_result(this);
    }

    @Override
    public void clear() {
      this.success = null;
    }

    public String getSuccess() {
      return this.success;
    }

    public ping_result setSuccess(String success) {
      this.success = success;
      return this;
    }

    public void unsetSuccess() {
      this.success = null;
    }

    /** Returns true if field success is set (has been assigned a value) and false otherwise */
    public boolean isSetSuccess() {
      return this.success != null;
    }

    public void setSuccessIsSet(boolean value) {
      if (!value) {
        this.success = null;
      }
    }

    public void setFieldValue(_Fields field, Object value) {
      switch (field) {
      case SUCCESS:
        if (value == null) {
          unsetSuccess();
        } else {
          setSuccess((String)value);
        }
        break;

      }
    }

    public Object getFieldValue(_Fields field) {
      switch (field) {
      case SUCCESS:
        return getSuccess();

      }
      throw new IllegalStateException();
    }

    /** Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise */
    public boolean isSet(_Fields field) {
      if (field == null) {
        throw new IllegalArgumentException();
      }

      switch (field) {
      case SUCCESS:
        return isSetSuccess();
      }
      throw new IllegalStateException();
    }

    @Override
    public boolean equals(Object that) {
      if (that == null)
        return false;
      if (that instanceof ping_result)
        return this.equals((ping_result)that);
      return false;
    }

    public boolean equals(ping_result that) {
      if (that == null)
        return false;

      boolean this_present_success = true && this.isSetSuccess();
      boolean that_present_success = true && that.isSetSuccess();
      if (this_present_success || that_present_success) {
        if (!(this_present_success && that_present_success))
          return false;
        if (!this.success.equals(that.success))
          return false;
      }

      return true;
    }

    @Override
    public int hashCode() {
      List<Object> list = new ArrayList<Object>();

      boolean present_success = true && (isSetSuccess());
      list.add(present_success);
      if (present_success)
        list.add(success);

      return list.hashCode();
    }

    @Override
    public int compareTo(ping_result other) {
      if (!getClass().equals(other.getClass())) {
        return getClass().getName().compareTo(other.getClass().getName());
      }

      int lastComparison = 0;

      lastComparison = Boolean.valueOf(isSetSuccess()).compareTo(other.isSetSuccess());
      if (lastComparison != 0) {
        return lastComparison;
      }
      if (isSetSuccess()) {
        lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.success, other.success);
        if (lastComparison != 0) {
          return lastComparison;
        }
      }
      return 0;
    }

    public _Fields fieldForId(int fieldId) {
      return _Fields.findByThriftId(fieldId);
    }

    public void read(org.apache.thrift.protocol.TProtocol iprot) throws org.apache.thrift.TException {
      schemes.get(iprot.getScheme()).getScheme().read(iprot, this);
    }

    public void write(org.apache.thrift.protocol.TProtocol oprot) throws org.apache.thrift.TException {
      schemes.get(oprot.getScheme()).getScheme().write(oprot, this);
      }

    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder("ping_result(");
      boolean first = true;

      sb.append("success:");
      if (this.success == null) {
        sb.append("null");
      } else {
        sb.append(this.success);
      }
      first = false;
      sb.append(")");
      return sb.toString();
    }

    public void validate() throws org.apache.thrift.TException {
      // check for required fields
      // check for sub-struct validity
    }

    private void writeObject(java.io.ObjectOutputStream out) throws java.io.IOException {
      try {
        write(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(out)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private void readObject(java.io.ObjectInputStream in) throws java.io.IOException, ClassNotFoundException {
      try {
        read(new org.apache.thrift.protocol.TCompactProtocol(new org.apache.thrift.transport.TIOStreamTransport(in)));
      } catch (org.apache.thrift.TException te) {
        throw new java.io.IOException(te);
      }
    }

    private static class ping_resultStandardSchemeFactory implements SchemeFactory {
      public ping_resultStandardScheme getScheme() {
        return new ping_resultStandardScheme();
      }
    }

    private static class ping_resultStandardScheme extends StandardScheme<ping_result> {

      public void read(org.apache.thrift.protocol.TProtocol iprot, ping_result struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TField schemeField;
        iprot.readStructBegin();
        while (true)
        {
          schemeField = iprot.readFieldBegin();
          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) {
            break;
          }
          switch (schemeField.id) {
            case 0: // SUCCESS
              if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
                struct.success = iprot.readString();
                struct.setSuccessIsSet(true);
              } else {
                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
              }
              break;
            default:
              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
          }
          iprot.readFieldEnd();
        }
        iprot.readStructEnd();

        // check for required fields of primitive type, which can't be checked in the validate method
        struct.validate();
      }

      public void write(org.apache.thrift.protocol.TProtocol oprot, ping_result struct) throws org.apache.thrift.TException {
        struct.validate();

        oprot.writeStructBegin(STRUCT_DESC);
        if (struct.success != null) {
          oprot.writeFieldBegin(SUCCESS_FIELD_DESC);
          oprot.writeString(struct.success);
          oprot.writeFieldEnd();
        }
        oprot.writeFieldStop();
        oprot.writeStructEnd();
      }

    }

    private static class ping_resultTupleSchemeFactory implements SchemeFactory {
      public ping_resultTupleScheme getScheme() {
        return new ping_resultTupleScheme();
      }
    }

    private static class ping_resultTupleScheme extends TupleScheme<ping_result> {

      @Override
      public void write(org.apache.thrift.protocol.TProtocol prot, ping_result struct) throws org.apache.thrift.TException {
        TTupleProtocol oprot = (TTupleProtocol) prot;
        BitSet optionals = new BitSet();
        if (struct.isSetSuccess()) {
          optionals.set(0);
        }
        oprot.writeBitSet(optionals, 1);
        if (struct.isSetSuccess()) {
          oprot.writeString(struct.success);
        }
      }

      @Override
      public void read(org.apache.thrift.protocol.TProtocol prot, ping_result struct) throws org.apache.thrift.TException {
        TTupleProtocol iprot = (TTupleProtocol) prot;
        BitSet incoming = iprot.readBitSet(1);
        if (incoming.get(0)) {
          struct.success = iprot.readString();
          struct.setSuccessIsSet(true);
        }
      }
    }

  }

}

对于有代码洁癖的人来说，尝试阅读这一巨型java类是很别扭的。swift子项目正好解决了这个问题，它可以通过注解极大简化最终生成的thrift 服务java代码，大家可以对比一下:

三、swift生成的HelloService代码

package yjmyzz.cnblogs.com.thrift.swift;

import com.facebook.swift.service.ThriftMethod;
import com.facebook.swift.service.ThriftService;
import com.google.common.util.concurrent.ListenableFuture;

@ThriftService("HelloService")
public interface HelloService
{
    @ThriftService("HelloService")
    public interface Async
    {
        @ThriftMethod(value = "ping")
        ListenableFuture<String> ping();
    }
    @ThriftMethod(value = "ping")
    String ping() throws org.apache.thrift.TException;
}

上面这段代码，可以用maven-plugin生成：

四、swift-maven-plugin 配置

 <plugins>
     <plugin>
         <groupId>com.facebook.mojo</groupId>
         <artifactId>swift-maven-plugin</artifactId>
         <version>${swift-version}</version>
         <executions>
             <execution>
                 <goals>
                     <goal>generate</goal>
                 </goals>
             </execution>
         </executions>
         <configuration>
             <skip>false</skip>
             <idlFiles>
                 <directory>${project.basedir}/src/main/thrift/</directory>
                 <includes>
                     <include>**/*.thrift</include>
                 </includes>
                 <!--<excludes>-->
                     <!--<exclude>**/other.thrift</exclude>-->
                 <!--</excludes>-->
             </idlFiles>
             <defaultPackage>${project.groupId}.thrift.swift</defaultPackage>
             <outputFolder>${project.basedir}/src/main/java/</outputFolder>
         </configuration>
     </plugin>
 </plugins>

五、服务端代码示例

为了方便，先封装一个服务启动的辅助类

package yjmyzz.cnblogs.com.thrift.server;

import com.facebook.nifty.core.NettyServerConfig;
import com.facebook.nifty.core.ThriftServerDef;
import com.facebook.swift.codec.ThriftCodecManager;
import com.facebook.swift.service.ThriftEventHandler;
import com.facebook.swift.service.ThriftServer;
import com.facebook.swift.service.ThriftServiceProcessor;
import com.google.common.collect.ImmutableList;
import org.junit.Assert;
import yjmyzz.cnblogs.com.thrift.service.HelloServiceImpl;

import java.util.concurrent.ExecutorService;

import static java.util.concurrent.Executors.newCachedThreadPool;
import static java.util.concurrent.Executors.newFixedThreadPool;

/**
 * Created by yangjunming on 3/22/16.
 * author: yangjunming@huijiame.com
 */
public class ServerCreator {
    private ExecutorService taskWorkerExecutor;
    private ThriftServer server;
    private ExecutorService bossExecutor;
    private ExecutorService ioWorkerExecutor;

    public ThriftServer getServer() {
        return server;
    }

    public ServerCreator invoke() {
        ThriftServiceProcessor processor = new ThriftServiceProcessor(
                new ThriftCodecManager(),
                ImmutableList.<ThriftEventHandler>of(),
                new HelloServiceImpl()
        );

        taskWorkerExecutor = newFixedThreadPool(1);

        ThriftServerDef serverDef = ThriftServerDef.newBuilder()
                .listen(12345)
                .withProcessor(processor)
                .using(taskWorkerExecutor)
                .build();

        bossExecutor = newCachedThreadPool();
        ioWorkerExecutor = newCachedThreadPool();

        NettyServerConfig serverConfig = NettyServerConfig.newBuilder()
                .setBossThreadExecutor(bossExecutor)
                .setWorkerThreadExecutor(ioWorkerExecutor)
                .build();

        server = new ThriftServer(serverConfig, serverDef);
        return this;
    }

    public void checkExecutorsTerminated() {
        Assert.assertTrue(bossExecutor.isTerminated());
        Assert.assertTrue(ioWorkerExecutor.isTerminated());
        Assert.assertTrue(taskWorkerExecutor.isTerminated());
    }

    public void stop() {
        server.close();
    }
}

然后就可以直接用了：

package yjmyzz.cnblogs.com.thrift.server;

import com.facebook.swift.service.ThriftServer;

/**
 * Created by yangjunming on 3/22/16.
 * author: yangjunming@huijiame.com
 */
public class ThriftServerDemo {

    public static void main(String[] args) {

        ServerCreator serverCreator = new ServerCreator().invoke();
        ThriftServer server = serverCreator.getServer();

        server.start();
        System.out.println("服务已启动!");

        //serverCreator.stop();
        //serverCreator.checkExecutorsTerminated();

    }

}

六、客户端代码

package yjmyzz.cnblogs.com.thrift.client;

import com.facebook.nifty.client.FramedClientConnector;
import com.facebook.swift.service.ThriftClientManager;
import org.apache.thrift.TException;
import yjmyzz.cnblogs.com.thrift.swift.HelloService;
import java.util.concurrent.ExecutionException;
import static com.google.common.net.HostAndPort.fromParts;

/**
 * Created by yangjunming on 3/22/16.
 * author: yangjunming@huijiame.com
 */
public class ThriftClientDemo {

    public static void main(String[] args) throws ExecutionException, InterruptedException, TException {

        ThriftClientManager clientManager = new ThriftClientManager();
        HelloService helloService = clientManager.createClient(
                new FramedClientConnector(fromParts("localhost", 12345)),
                HelloService.class).get();
        System.out.println(helloService.ping());

        int max = 100000;
        Long start = System.currentTimeMillis();
        for (int i = 0; i < max; i++) {
            helloService.ping();
        }
        Long end = System.currentTimeMillis();
        Long elapse = end - start;
        int perform = Double.valueOf(max / (elapse / 1000d)).intValue();

        System.out.print("thrift " + max + " 次RPC调用，耗时：" + elapse + "毫秒，平均" + perform + "次/秒");

    }
}

上面的代码，server/client是基于netty实现的，在我mac pro上的结果大概1秒8k+次， 相对thrift原生成的实现，性能只有70%上下。