Package com.alibaba.dubbo.rpc

Examples of com.alibaba.dubbo.rpc.RpcResult

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                    try {
                        if (get.equals(invocation.getMethodName())) {
                            if (invocation.getArguments().length != 1) {
                                throw new IllegalArgumentException("The memcached get method arguments mismatch, must only one arguments. interface: " + type.getName() + ", method: " + invocation.getMethodName() + ", url: " + url);
                            }
                            return new RpcResult(memcachedClient.get(String.valueOf(invocation.getArguments()[0])));
                        } else if (set.equals(invocation.getMethodName())) {
                            if (invocation.getArguments().length != 2) {
                                throw new IllegalArgumentException("The memcached set method arguments mismatch, must be two arguments. interface: " + type.getName() + ", method: " + invocation.getMethodName() + ", url: " + url);
                            }
                            memcachedClient.set(String.valueOf(invocation.getArguments()[0]), expiry, invocation.getArguments()[1]);
                            return new RpcResult();
                        } else if (delete.equals(invocation.getMethodName())) {
                            if (invocation.getArguments().length != 1) {
                                throw new IllegalArgumentException("The memcached delete method arguments mismatch, must only one arguments. interface: " + type.getName() + ", method: " + invocation.getMethodName() + ", url: " + url);
                            }
                            memcachedClient.delete(String.valueOf(invocation.getArguments()[0]));
                            return new RpcResult();
                        } else {
                            throw new UnsupportedOperationException("Unsupported method " + invocation.getMethodName() + " in memcached service.");
                        }
                    } catch (Throwable t) {
                        RpcException re = new RpcException("Failed to invoke memecached service method. interface: " + type.getName() + ", method: " + invocation.getMethodName() + ", url: " + url + ", cause: " + t.getMessage(), t);
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    public void destroy() {
    }

    public Result invoke(Invocation invocation) throws RpcException {
        try {
            return new RpcResult(doInvoke(proxy, invocation.getMethodName(), invocation.getParameterTypes(), invocation.getArguments()));
        } catch (InvocationTargetException e) {
            return new RpcResult(e.getTargetException());
        } catch (Throwable e) {
            throw new RpcException("Failed to invoke remote proxy method " + invocation.getMethodName() + " to " + getUrl() + ", cause: " + e.getMessage(), e);
        }
    }
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                    } else {
                        newValue = value;
                    }
                    if (newValue != value) {
                        result = new RpcResult(newValue);
                    }
                } catch (Throwable t) {
                    logger.warn(t.getMessage(), t);
                }
            }
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                    if (exception instanceof RpcException) {
                        return result;
                    }

                    // 否则，包装成RuntimeException抛给客户端
                    return new RpcResult(new RuntimeException(StringUtils.toString(exception)));
                } catch (Throwable e) {
                    logger.warn("Fail to ExceptionFilter when called by " + RpcContext.getContext().getRemoteHost()
                            + ". service: " + invoker.getInterface().getName() + ", method: " + invocation.getMethodName()
                            + ", exception: " + e.getClass().getName() + ": " + e.getMessage(), e);
                    return result;
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                protocol.readMessageEnd();
            } catch ( TException e ) {
                throw new IOException( e.getMessage(), e );
            }

            RpcResult result = new RpcResult();

            result.setException( new RpcException( exception.getMessage() ) );

            Response response = new Response();

            response.setResult( result );

            response.setId( id );

            return response;

        } else if ( message.type == TMessageType.REPLY ) {

            String resultClassName = ExtensionLoader.getExtensionLoader( ClassNameGenerator.class )
                    .getExtension(ThriftClassNameGenerator.NAME).generateResultClassName( serviceName, message.name );

            if ( StringUtils.isEmpty( resultClassName ) ) {
                throw new IllegalArgumentException(
                        new StringBuilder( 32 )
                                .append( "Could not infer service result class name from service name " )
                                .append( serviceName )
                                .append( ", the service name you specified may not generated by thrift idl compiler" )
                                .toString() );
            }

            Class<?> clazz = cachedClass.get( resultClassName );

            if ( clazz == null ) {

                try {

                    clazz = ClassHelper.forNameWithThreadContextClassLoader( resultClassName );

                    cachedClass.putIfAbsent( resultClassName, clazz );

                } catch ( ClassNotFoundException e ) {
                    throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
                }

            }

            TBase<?,? extends TFieldIdEnum> result;
            try {
                result = ( TBase<?,?> ) clazz.newInstance();
            } catch ( InstantiationException e ) {
                throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
            } catch ( IllegalAccessException e ) {
                throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
            }

            try {
                result.read( protocol );
                protocol.readMessageEnd();
            } catch ( TException e ) {
                throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
            }

            Object realResult = null;

            int index = 0;

            while ( true ) {

                TFieldIdEnum fieldIdEnum = result.fieldForId( index++ );

                if ( fieldIdEnum == null ) { break ; }

                Field field;

                try {
                    field = clazz.getDeclaredField( fieldIdEnum.getFieldName() );
                    field.setAccessible( true );
                } catch ( NoSuchFieldException e ) {
                    throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
                }

                try {
                    realResult = field.get( result );
                } catch ( IllegalAccessException e ) {
                    throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
                }

                if ( realResult != null ) { break ; }

            }

            Response response = new Response();

            response.setId( id );

            RpcResult rpcResult = new RpcResult();

            if ( realResult instanceof Throwable ) {
                rpcResult.setException( ( Throwable ) realResult );
            } else {
                rpcResult.setValue(realResult);
            }

            response.setResult( rpcResult );

            return response;
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    }

    private void encodeResponse( Channel channel, OutputStream output, Response response )
            throws IOException {

        RpcResult result = ( RpcResult ) response.getResult();

        RequestData rd = cachedRequest.get( response.getId() );

        String resultClassName = ExtensionLoader.getExtensionLoader( ClassNameGenerator.class ).getExtension(
                    channel.getUrl().getParameter(ThriftConstants.CLASS_NAME_GENERATOR_KEY, ThriftClassNameGenerator.NAME))
                    .generateResultClassName(rd.serviceName, rd.methodName);

        if ( StringUtils.isEmpty( resultClassName ) ) {
            throw new RpcException( RpcException.SERIALIZATION_EXCEPTION,
                                    new StringBuilder( 32 ).append(
                                            "Could not encode response, the specified interface may be incorrect." ).toString() );
        }

        Class clazz = cachedClass.get( resultClassName );

        if ( clazz == null ) {

            try {
                clazz = ClassHelper.forNameWithThreadContextClassLoader(resultClassName);
                cachedClass.putIfAbsent( resultClassName, clazz );
            } catch ( ClassNotFoundException e ) {
                throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
            }

        }

        TBase resultObj;

        try {
            resultObj = ( TBase ) clazz.newInstance();
        } catch ( InstantiationException e ) {
            throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
        } catch ( IllegalAccessException e ) {
            throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
        }

        TApplicationException applicationException = null;
        TMessage message;

        if ( result.hasException() ) {
            Throwable throwable = result.getException();
            int index = 1;
            boolean found = false;
            while ( true ) {
                TFieldIdEnum fieldIdEnum = resultObj.fieldForId( index++ );
                if ( fieldIdEnum == null ) { break; }
                String fieldName = fieldIdEnum.getFieldName();
                String getMethodName = ThriftUtils.generateGetMethodName( fieldName );
                String setMethodName = ThriftUtils.generateSetMethodName( fieldName );
                Method getMethod;
                Method setMethod;
                try {
                    getMethod = clazz.getMethod( getMethodName );
                    if ( getMethod.getReturnType().equals( throwable.getClass() ) ) {
                        found = true;
                        setMethod = clazz.getMethod( setMethodName, throwable.getClass() );
                        setMethod.invoke( resultObj, throwable );
                    }
                } catch ( NoSuchMethodException e ) {
                    throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
                } catch ( InvocationTargetException e ) {
                    throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
                } catch ( IllegalAccessException e ) {
                    throw new RpcException( RpcException.SERIALIZATION_EXCEPTION, e.getMessage(), e );
                }
            }

            if ( !found ) {
                applicationException = new TApplicationException( throwable.getMessage() );
            }

        } else {
            Object realResult = result.getResult();
            // result field id is 0
            String fieldName = resultObj.fieldForId( 0 ).getFieldName();
            String setMethodName = ThriftUtils.generateSetMethodName( fieldName );
            String getMethodName = ThriftUtils.generateGetMethodName( fieldName );
            Method getMethod;
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                            if (invocation.getArguments().length != 1) {
                                throw new IllegalArgumentException("The redis get method arguments mismatch, must only one arguments. interface: " + type.getName() + ", method: " + invocation.getMethodName() + ", url: " + url);
                            }
                            byte[] value = resource.get(String.valueOf(invocation.getArguments()[0]).getBytes());
                            if (value == null) {
                                return new RpcResult();
                            }
                            ObjectInput oin = getSerialization(url).deserialize(url, new ByteArrayInputStream(value));
                            return new RpcResult(oin.readObject());
                        } else if (set.equals(invocation.getMethodName())) {
                            if (invocation.getArguments().length != 2) {
                                throw new IllegalArgumentException("The redis set method arguments mismatch, must be two arguments. interface: " + type.getName() + ", method: " + invocation.getMethodName() + ", url: " + url);
                            }
                            byte[] key = String.valueOf(invocation.getArguments()[0]).getBytes();
                            ByteArrayOutputStream output = new ByteArrayOutputStream();
                            ObjectOutput value = getSerialization(url).serialize(url, output);
                            value.writeObject(invocation.getArguments()[1]);
                            resource.set(key, output.toByteArray());
                            if (expiry > 1000) {
                                resource.expire(key, expiry / 1000);
                            }
                            return new RpcResult();
                        } else if (delete.equals(invocation.getMethodName())) {
                            if (invocation.getArguments().length != 1) {
                                throw new IllegalArgumentException("The redis delete method arguments mismatch, must only one arguments. interface: " + type.getName() + ", method: " + invocation.getMethodName() + ", url: " + url);
                            }
                            resource.del(String.valueOf(invocation.getArguments()[0]).getBytes());
                            return new RpcResult();
                        } else {
                            throw new UnsupportedOperationException("Unsupported method " + invocation.getMethodName() + " in redis service.");
                        }
                    }
                    catch (Throwable t) {
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        ExchangeClient currentClient = new HeaderExchangeClient(new ChannelWrapper(this.channel));

        try {
            if (getUrl().getMethodParameter(invocation.getMethodName(), Constants.ASYNC_KEY, false)) { // 不可靠异步
                currentClient.send(inv,getUrl().getMethodParameter(invocation.getMethodName(), Constants.SENT_KEY, false));
                return new RpcResult();
            }
            int timeout = getUrl().getMethodParameter(invocation.getMethodName(),
                    Constants.TIMEOUT_KEY, Constants.DEFAULT_TIMEOUT);
            if (timeout > 0) {
                return (Result) currentClient.request(inv, timeout).get();
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            if (! result.hasException()) {
                Object value = result.getValue();
                try {
                    Method method = invoker.getInterface().getMethod(methodName, parameterTypes);
                    return new RpcResult(PojoUtils.realize(value, method.getReturnType(), method.getGenericReturnType()));
                } catch (NoSuchMethodException e) {
                    throw new RpcException(e.getMessage(), e);
                }
            } else if (result.getException() instanceof GenericException) {
                GenericException exception = (GenericException) result.getException();
                try {
                    String className = exception.getExceptionClass();
                    Class<?> clazz = ReflectUtils.forName(className);
                    Throwable targetException = null;
                    Throwable lastException = null;
                    try {
                        targetException = (Throwable) clazz.newInstance();
                    } catch (Throwable e) {
                        lastException = e;
                        for (Constructor<?> constructor : clazz.getConstructors()) {
                            try {
                                targetException = (Throwable) constructor.newInstance(new Object[constructor.getParameterTypes().length]);
                                break;
                            } catch (Throwable e1) {
                                lastException = e1;
                            }
                        }
                    }
                    if (targetException != null) {
                        try {
                            Field field = Throwable.class.getDeclaredField("detailMessage");
                            if (! field.isAccessible()) {
                                field.setAccessible(true);
                            }
                            field.set(targetException, exception.getExceptionMessage());
                        } catch (Throwable e) {
                            logger.warn(e.getMessage(), e);
                        }
                        result = new RpcResult(targetException);
                    } else if (lastException != null) {
                        throw lastException;
                    }
                } catch (Throwable e) {
                    throw new RpcException("Can not deserialize exception " + exception.getExceptionClass() + ", message: " + exception.getExceptionMessage(), e);
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        try {
            return doInvoke(invocation);
        } catch (InvocationTargetException e) { // biz exception
            Throwable te = e.getTargetException();
            if (te == null) {
                return new RpcResult(e);
            } else {
                if (te instanceof RpcException) {
                    ((RpcException) te).setCode(RpcException.BIZ_EXCEPTION);
                }
                return new RpcResult(te);
            }
        } catch (RpcException e) {
            if (e.isBiz()) {
                return new RpcResult(e);
            } else {
                throw e;
            }
        } catch (Throwable e) {
            return new RpcResult(e);
        }
    }
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Related Classes of com.alibaba.dubbo.rpc.RpcResult

  • com.alibaba.dubbo.cache.filter.CacheFilter
  • com.alibaba.dubbo.rpc.cluster.support.FailbackClusterInvoker
  • com.alibaba.dubbo.rpc.cluster.support.FailsafeClusterInvoker
  • com.alibaba.dubbo.rpc.cluster.support.MergeableClusterInvoker
  • com.alibaba.dubbo.rpc.cluster.support.MergeableClusterInvokerTest
  • com.alibaba.dubbo.rpc.cluster.support.wrapper.MockClusterInvoker
  • com.alibaba.dubbo.rpc.filter.CompatibleFilter
  • com.alibaba.dubbo.rpc.filter.CompatibleFilterFilterTest
  • com.alibaba.dubbo.rpc.filter.ContextFilterTest
  • com.alibaba.dubbo.rpc.filter.EchoFilter
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