/**
* Closes connections that have been idle for at least the given amount of time.
*
* @param idleTime the minimum idle time, in milliseconds, for connections to be closed
*/
public void closeIdleConnections(final long idleTime) {
// the latest time for which connections will be closed
final long idleTimeout = System.currentTimeMillis() - idleTime;
if (log.isDebugEnabled()) {
log.debug("Checking for connections, idle timeout: " + idleTimeout);
}
for (final Entry<HttpConnection, TimeValues> entry : connectionToTimes.entrySet()) {
final HttpConnection conn = entry.getKey();
final TimeValues times = entry.getValue();
final long connectionTime = times.timeAdded;
if (connectionTime <= idleTimeout) {
if (log.isDebugEnabled()) {
log.debug("Closing idle connection, connection time: " + connectionTime);
}
try {
conn.close();
} catch (final IOException ex) {
log.debug("I/O error closing connection", ex);
}
}
}
}
/**
* Registers the given connection with this handler. The connection will be held until {@link
* #remove} or {@link #closeIdleConnections} is called.
*
* @param connection the connection to add
* @see #remove
*/
public void add(final HttpConnection connection, final long validDuration, final TimeUnit unit) {
final long timeAdded = System.currentTimeMillis();
if (log.isDebugEnabled()) {
log.debug("Adding connection at: " + timeAdded);
}
connectionToTimes.put(connection, new TimeValues(timeAdded, validDuration, unit));
}
/**
* Removes the given connection from the list of connections to be closed when idle. This will
* return true if the connection is still valid, and false if the connection should be considered
* expired and not used.
*
* @param connection
* @return True if the connection is still valid.
*/
public boolean remove(final HttpConnection connection) {
final TimeValues times = connectionToTimes.remove(connection);
if (times == null) {
log.warn("Removing a connection that never existed!");
return true;
} else {
return System.currentTimeMillis() <= times.timeExpires;
}
}
public void closeExpiredConnections() {
final long now = System.currentTimeMillis();
if (log.isDebugEnabled()) {
log.debug("Checking for expired connections, now: " + now);
}
for (final Entry<HttpConnection, TimeValues> entry : connectionToTimes.entrySet()) {
final HttpConnection conn = entry.getKey();
final TimeValues times = entry.getValue();
if (times.timeExpires <= now) {
if (log.isDebugEnabled()) {
log.debug("Closing connection, expired @: " + times.timeExpires);
}
try {
conn.close();
} catch (final IOException ex) {
log.debug("I/O error closing connection", ex);
}
}
}
}
