com.tailf.jnc.IOSubscriber Maven / Gradle / Ivy
package com.tailf.jnc;
/**
* The IO subscriber is used for tracing, auditing, and logging of messages
* which are sent and received over the SSHSession by a NETCONF session.
*
* This is an abstract class. For an example of how to use this class see
* {@link DefaultIOSubscriber}.
*
* To register an IO subscriber:
*
*
* SSHConnection c = new SSHConnection("127.0.0.1", 2022);
* c.authenticateWithPassword("adimin", "pass");
* SSHSession session = new SSHSession(c);
* session.addSubscriber(new DefaultIOSubscriber("my_device"));
* NetconfSession nc = new NetconfSession(session);
*
*
* The above code will install the default IO subscriber which just prints
* in/out data.
*/
public abstract class IOSubscriber {
private boolean rawmode;
private StringBuffer inb;
private StringBuffer outb;
/**
* Constructor.
*
* @param rawmode If true 'raw' text will appear instead of pretty
* formatted XML.
*/
public IOSubscriber(boolean rawmode) {
inb = new StringBuffer(1024);
outb = new StringBuffer(1024);
this.rawmode = rawmode;
}
/**
* Empty constructor. The rawmode, inb and outb fields will be unassigned.
*/
public IOSubscriber() {
}
/**
* Will get called as soon as we have input (data which is received).
*
* @param s Text being received
*/
abstract public void input(String s);
/**
* Will get called as soon as we have output (data which is being sent).
*
* @param s Text being sent
*/
abstract public void output(String s);
void inputChar(int i) {
final char ch = (char) i;
inb.append(ch);
if (ch == '\n' && rawmode) {
// call usercode
input(inb.toString());
inb.setLength(0);
}
}
private void xmlFlush(StringBuffer buf, boolean isInput) {
String res;
try {
final XMLParser p = new XMLParser();
final Element e = p.parse(buf.toString());
res = e.toXMLString();
buf.setLength(0);
} catch (final Exception e) {
res = buf.toString();
buf.setLength(0);
}
if (isInput) {
input(res);
} else {
output(res);
}
}
void inputFlush(String endMarker) {
if (!rawmode) {
xmlFlush(inb, true);
} else {
input(inb.toString() + endMarker + "\n");
inb.setLength(0);
}
}
void outputFlush(String endMarker) {
if (!rawmode) {
xmlFlush(outb, false);
} else {
output(outb.toString() + endMarker + "\n");
outb.setLength(0);
}
}
private void outputChar(char ch) {
outb.append(ch);
if (ch == '\n' && rawmode) {
// call usercode
output(outb.toString());
outb.setLength(0);
}
}
void outputPrint(long iVal) {
final StringBuffer tmp = new StringBuffer(16);
tmp.append(iVal);
for (int i = 0; i < tmp.length(); i++) {
outputChar(tmp.charAt(i));
}
}
void outputPrint(String s) {
final StringBuffer tmp = new StringBuffer(64);
tmp.append(s);
for (int i = 0; i < tmp.length(); i++) {
outputChar(tmp.charAt(i));
}
}
void outputPrintln(String s) {
final StringBuffer tmp = new StringBuffer(64);
tmp.append(s);
tmp.append('\n');
for (int i = 0; i < tmp.length(); i++) {
outputChar(tmp.charAt(i));
}
}
void outputPrintln(int iVal) {
final StringBuffer tmp = new StringBuffer(16);
tmp.append(iVal);
tmp.append('\n');
for (int i = 0; i < tmp.length(); i++) {
outputChar(tmp.charAt(i));
}
}
}