package com.intelligt.modbus.jlibmodbus.net.stream.base;
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import com.intelligt.modbus.jlibmodbus.Modbus;
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import com.intelligt.modbus.jlibmodbus.utils.*;
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import java.io.IOException;
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/*
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* Copyright (C) 2016 "Invertor" Factory", JSC
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* [http://www.sbp-invertor.ru]
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*
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* This file is part of JLibModbus.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Authors: Vladislav Y. Kochedykov, software engineer.
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* email: vladislav.kochedykov@gmail.com
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*/
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/**
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* this class allows to log a content of the input stream stream.
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*
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* @author kochedykov
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* @since 1.2
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*/
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public class LoggingInputStream extends ModbusInputStream {
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private FrameEventListenerList listenerList = new FrameEventListenerListImpl();
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final static private String LOG_MESSAGE_TITLE = "Frame recv: ";
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/**
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* The input stream to be logged
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*/
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final private ModbusInputStream in;
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final private ByteFifo fifo = new ByteFifo(Modbus.MAX_PDU_LENGTH);
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public LoggingInputStream(ModbusInputStream in) {
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this.in = in;
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}
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@Override
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public int read() throws IOException {
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int b = in.read();
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if (Modbus.isLoggingEnabled()) {
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fifo.write(b);
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}
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return b;
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}
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@Override
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public int read(byte[] b, int off, int len) throws IOException {
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int read = in.read(b, off, len);
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if (Modbus.isLoggingEnabled()) {
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fifo.write(b, off, read);
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}
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return read;
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}
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@Override
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public void setReadTimeout(int readTimeout) {
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in.setReadTimeout(readTimeout);
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}
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public void log() {
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if (Modbus.isLoggingEnabled() && fifo.size() > 0) {
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byte[] bytes = fifo.toByteArray();
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Modbus.log().info(LOG_MESSAGE_TITLE + DataUtils.toAscii(bytes));
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listenerList.fireFrameReceivedEvent(new FrameEvent(bytes));
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fifo.reset();
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}
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}
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public void setListenerList(FrameEventListenerList listenerList) {
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this.listenerList = listenerList;
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}
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}
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