org.apache.mina.filter.codec.statemachine.DecodingStateMachine Maven / Gradle / Ivy
/**
* Copyright 2007-2015, Kaazing Corporation. All rights reserved.
*
* 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 org.apache.mina.filter.codec.statemachine;
import java.util.ArrayList;
import java.util.List;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.filterchain.IoFilter.NextFilter;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.ProtocolDecoderOutput;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Abstract base class for decoder state machines. Calls {@link #init()} to
* get the start {@link DecodingState} of the state machine. Calls
* {@link #destroy()} when the state machine has reached its end state or when
* the session is closed.
*
* NOTE: The {@link ProtocolDecoderOutput} used by this class when calling
* {@link DecodingState#decode(IoBuffer, ProtocolDecoderOutput)} buffers decoded
* messages in a {@link List}. Once the state machine has reached its end state
* this class will call {@link #finishDecode(List, ProtocolDecoderOutput)}. The
* implementation will have to take care of writing the decoded messages to the
* real {@link ProtocolDecoderOutput} used by the configured
* {@link ProtocolCodecFilter}.
*
*
* @author Apache MINA Project
*/
public abstract class DecodingStateMachine implements DecodingState {
private final Logger log = LoggerFactory
.getLogger(DecodingStateMachine.class);
private final List