/**
* Obtains a connection.
*
* @param route where the connection should point to
* @return a connection that can be used to communicate along the given route
*/
public ManagedClientConnection getConnection(final HttpRoute route, final Object state) {
Args.notNull(route, "Route");
assertStillUp();
if (log.isDebugEnabled()) {
log.debug("Get connection for route " + route);
}
synchronized (this) {
Asserts.check(managedConn == null, MISUSE_MESSAGE);
// check re-usability of the connection
boolean recreate = false;
boolean shutdown = false;
// Kill the connection if it expired.
closeExpiredConnections();
if (uniquePoolEntry.connection.isOpen()) {
final RouteTracker tracker = uniquePoolEntry.tracker;
shutdown =
(tracker == null
|| // can happen if method is aborted
!tracker.toRoute().equals(route));
} else {
// If the connection is not open, create a new PoolEntry,
// as the connection may have been marked not reusable,
// due to aborts -- and the PoolEntry should not be reused
// either. There's no harm in recreating an entry if
// the connection is closed.
recreate = true;
}
if (shutdown) {
recreate = true;
try {
uniquePoolEntry.shutdown();
} catch (final IOException iox) {
log.debug("Problem shutting down connection.", iox);
}
}
if (recreate) {
uniquePoolEntry = new PoolEntry();
}
managedConn = new ConnAdapter(uniquePoolEntry, route);
return managedConn;
}
}
public void releaseConnection(
final ManagedClientConnection conn, final long validDuration, final TimeUnit timeUnit) {
Args.check(
conn instanceof ConnAdapter,
"Connection class mismatch, " + "connection not obtained from this manager");
assertStillUp();
if (log.isDebugEnabled()) {
log.debug("Releasing connection " + conn);
}
final ConnAdapter sca = (ConnAdapter) conn;
synchronized (sca) {
if (sca.poolEntry == null) {
return; // already released
}
final ClientConnectionManager manager = sca.getManager();
Asserts.check(manager == this, "Connection not obtained from this manager");
try {
// make sure that the response has been read completely
if (sca.isOpen() && (this.alwaysShutDown || !sca.isMarkedReusable())) {
if (log.isDebugEnabled()) {
log.debug("Released connection open but not reusable.");
}
// make sure this connection will not be re-used
// we might have gotten here because of a shutdown trigger
// shutdown of the adapter also clears the tracked route
sca.shutdown();
}
} catch (final IOException iox) {
if (log.isDebugEnabled()) {
log.debug("Exception shutting down released connection.", iox);
}
} finally {
sca.detach();
synchronized (this) {
managedConn = null;
lastReleaseTime = System.currentTimeMillis();
if (validDuration > 0) {
connectionExpiresTime = timeUnit.toMillis(validDuration) + lastReleaseTime;
} else {
connectionExpiresTime = Long.MAX_VALUE;
}
}
}
}
}
public void closeIdleConnections(final long idletime, final TimeUnit tunit) {
assertStillUp();
// idletime can be 0 or negative, no problem there
Args.notNull(tunit, "Time unit");
synchronized (this) {
if ((managedConn == null) && uniquePoolEntry.connection.isOpen()) {
final long cutoff = System.currentTimeMillis() - tunit.toMillis(idletime);
if (lastReleaseTime <= cutoff) {
try {
uniquePoolEntry.close();
} catch (final IOException iox) {
// ignore
log.debug("Problem closing idle connection.", iox);
}
}
}
}
}