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/*-
* ============LICENSE_START=======================================================
* openECOMP : APP-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.appc.adapter.netconf.internal;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
/**
* Provides basic methods for exchanging netconf messages.
*/
public class NetconfAdapter2 {
private static final Logger LOG = LoggerFactory.getLogger(NetconfAdapter2.class);
// device input pipe
private final PipedOutputStream pipedOutIn = new PipedOutputStream();
private PipedInputStream in;
// device output pipe
private final PipedInputStream pipedInOut = new PipedInputStream();
private PipedOutputStream out;
/**
* Constructor.
*
* @throws IOException
*/
public NetconfAdapter2() throws IOException {
in = new PipedInputStream(pipedOutIn);
out = new PipedOutputStream(pipedInOut);
}
/**
* @return InputStream this instance will read netconf messages from.
*/
public InputStream getIn() {
return in;
}
/**
* @return OutputStream this instance will write netconf messages to.
*/
public OutputStream getOut() {
return out;
}
/**
* Receives netconf message from InputStream and return it's text (without netconf frame characters).
*
* @return text of message received from netconf device
* @throws IOException
*/
public String receiveMessage() throws IOException {
NetconfMessage message = new NetconfMessage();
byte[] buf = new byte[1024];
int c;
while((c = pipedInOut.read(buf)) > 0) {
message.append(buf, 0, c);
if (message.isCompleted()) {
break;
}
}
String text = message.getText();
if(LOG.isDebugEnabled()) {
LOG.debug("Received message from netconf device:\n" + text);
}
return text;
}
/**
* Sends netconf message with provided text (adds netconf frame characters and sends the message).
*
* @param text text of message to be sent to netconf device
* @throws IOException
*/
public void sendMessage(final String text) throws IOException {
if(LOG.isDebugEnabled()) {
LOG.debug("Sending message to netconf device:\n" + text);
}
pipedOutIn.write(new NetconfMessage(text).getFrame());
// pipedOutIn.flush();
}
}
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