Example usage for org.apache.http.impl.conn.tsccm RouteSpecificPool allocEntry

Introduction

In this page you can find the example usage for org.apache.http.impl.conn.tsccm RouteSpecificPool allocEntry.

Prototype

public BasicPoolEntry allocEntry(final Object state) 

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Document

Obtains a free entry from this pool, if one is available.

Usage

From source file:org.apache.http.impl.conn.tsccm.ConnPoolByRoute.java

/**
 * If available, get a free pool entry for a route.
 *
 * @param rospl       the route-specific pool from which to get an entry
 *
 * @return  an available pool entry for the given route, or
 *          <code>null</code> if none is available
 *///www. jav  a2  s  .  com
protected BasicPoolEntry getFreeEntry(final RouteSpecificPool rospl, final Object state) {

    BasicPoolEntry entry = null;
    poolLock.lock();
    try {
        boolean done = false;
        while (!done) {

            entry = rospl.allocEntry(state);

            if (entry != null) {
                if (log.isDebugEnabled()) {
                    log.debug("Getting free connection" + " [" + rospl.getRoute() + "][" + state + "]");

                }
                freeConnections.remove(entry);
                if (entry.isExpired(System.currentTimeMillis())) {
                    // If the free entry isn't valid anymore, get rid of it
                    // and loop to find another one that might be valid.
                    if (log.isDebugEnabled()) {
                        log.debug("Closing expired free connection" + " [" + rospl.getRoute() + "][" + state
                                + "]");
                    }
                    closeConnection(entry);
                    // We use dropEntry instead of deleteEntry because the entry
                    // is no longer "free" (we just allocated it), and deleteEntry
                    // can only be used to delete free entries.
                    rospl.dropEntry();
                    numConnections--;
                } else {
                    leasedConnections.add(entry);
                    done = true;
                }

            } else {
                done = true;
                if (log.isDebugEnabled()) {
                    log.debug("No free connections" + " [" + rospl.getRoute() + "][" + state + "]");
                }
            }
        }
    } finally {
        poolLock.unlock();
    }
    return entry;
}

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