package com.intelligt.modbus.jlibmodbus.net.transport;
|
|
import com.intelligt.modbus.jlibmodbus.exception.ModbusIOException;
|
import com.intelligt.modbus.jlibmodbus.exception.ModbusNumberException;
|
import com.intelligt.modbus.jlibmodbus.msg.ModbusMessageFactory;
|
import com.intelligt.modbus.jlibmodbus.msg.ModbusRequestFactory;
|
import com.intelligt.modbus.jlibmodbus.msg.base.ModbusMessage;
|
import com.intelligt.modbus.jlibmodbus.msg.base.ModbusRequest;
|
import com.intelligt.modbus.jlibmodbus.net.stream.base.LoggingInputStream;
|
import com.intelligt.modbus.jlibmodbus.net.stream.base.LoggingOutputStream;
|
|
import java.io.IOException;
|
|
/*
|
* Copyright (C) 2016 "Invertor" Factory", JSC
|
* [http://www.sbp-invertor.ru]
|
*
|
* This file is part of JLibModbus.
|
*
|
* 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.
|
*
|
* Authors: Vladislav Y. Kochedykov, software engineer.
|
* email: vladislav.kochedykov@gmail.com
|
*/
|
public abstract class ModbusTransport {
|
|
final private LoggingInputStream is;
|
final private LoggingOutputStream os;
|
|
ModbusTransport(LoggingInputStream is, LoggingOutputStream os) {
|
this.is = is;
|
this.os = os;
|
}
|
|
public void close() throws IOException {
|
is.close();
|
os.close();
|
}
|
|
protected ModbusMessage createMessage(ModbusMessageFactory factory) throws IOException, ModbusNumberException, ModbusIOException {
|
int serverAddress = is.read();
|
int functionCode = is.read();
|
ModbusMessage msg = factory.createMessage(functionCode);
|
msg.setServerAddress(serverAddress);
|
msg.read(is);
|
return msg;
|
}
|
|
public ModbusMessage readRequest() throws ModbusNumberException, ModbusIOException {
|
return readMessage(ModbusRequestFactory.getInstance());
|
}
|
|
public ModbusMessage readResponse(ModbusRequest request) throws ModbusNumberException, ModbusIOException {
|
return readMessage(request);
|
}
|
|
final public ModbusMessage readMessage(ModbusMessageFactory factory) throws ModbusNumberException, ModbusIOException {
|
try {
|
return read(factory);
|
} finally {
|
getInputStream().log();
|
}
|
}
|
|
public void send(ModbusMessage msg) throws ModbusIOException {
|
try {
|
sendImpl(msg);
|
getOutputStream().flush();
|
} catch (IOException e) {
|
throw new ModbusIOException(e);
|
}
|
|
}
|
|
public LoggingInputStream getInputStream() {
|
return is;
|
}
|
|
public LoggingOutputStream getOutputStream() {
|
return os;
|
}
|
|
abstract protected ModbusMessage read(ModbusMessageFactory factory) throws ModbusNumberException, ModbusIOException;
|
|
abstract protected void sendImpl(ModbusMessage msg) throws ModbusIOException;
|
}
|