Example usage for org.apache.commons.pool2 ObjectPool getNumIdle

Introduction

In this page you can find the example usage for org.apache.commons.pool2 ObjectPool getNumIdle.

Prototype

int getNumIdle();

Source Link

Document

Return the number of instances currently idle in this pool.

Usage

From source file:PoolingDriverExample.java

public static void printDriverStats() throws Exception {
    PoolingDriver driver = (PoolingDriver) DriverManager.getDriver("jdbc:apache:commons:dbcp:");
    ObjectPool<? extends Connection> connectionPool = driver.getConnectionPool("example");

    System.out.println("NumActive: " + connectionPool.getNumActive());
    System.out.println("NumIdle: " + connectionPool.getNumIdle());
}

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From source file:edumsg.core.PostgresConnection.java

public static void printDriverStats() throws SQLException {
    ObjectPool<? extends Connection> connectionPool = dbDriver.getConnectionPool(DB_NAME);

    System.out.println("DB Active Connections: " + connectionPool.getNumActive());
    System.out.println("DB Idle Connections: " + connectionPool.getNumIdle());
}

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From source file:com.yahoo.athenz.common.server.db.AthenzDataSource.java

@Override
synchronized public void clearPoolConnections() {
    ObjectPool<PoolableConnection> pool = getPool();
    try {/* w ww  .  j av a2  s.com*/
        if (LOG.isDebugEnabled()) {
            LOG.debug("Clearing all active/idle (" + pool.getNumActive() + "/" + pool.getNumIdle()
                    + ") connections from the pool");
        }
        pool.clear();
    } catch (Exception ex) {
        LOG.error("Unable to clear connections from the pool: " + ex.getMessage());
    }
}

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From source file:org.apache.omid.tso.TestBatchPool.java

@Test(timeOut = 10_000)
public void testBatchPoolInitializesAllBatchObjectsAsIdle() throws Exception {

    final ObjectPool<Batch> batchPool = injector.getInstance(Key.get(new TypeLiteral<ObjectPool<Batch>>() {
    }));//ww w.j  a v  a2s .co m

    assertEquals(batchPool.getNumActive(), 0);
    assertEquals(batchPool.getNumIdle(), CONCURRENT_WRITERS);

    // Now make all of them active and check it below
    for (int i = 0; i < CONCURRENT_WRITERS; i++) {
        batchPool.borrowObject();
    }

    assertEquals(batchPool.getNumActive(), CONCURRENT_WRITERS);
    assertEquals(batchPool.getNumIdle(), 0);

}

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From source file:org.cloudgraph.hbase.connect.Connection.java

public Connection(org.apache.hadoop.hbase.client.Connection conection, ObjectPool<Connection> pool,
        Configuration config) {/*www.j ava 2s . co m*/
    super();
    this.con = conection;
    this.pool = pool;
    this.config = config;
    // FIXME: configure table cache
    this.tableCache = CacheBuilder.newBuilder().maximumSize(20).expireAfterAccess(30, TimeUnit.SECONDS)
            .build(new CacheLoader<TableName, Table>() {
                @Override
                public Table load(TableName tableName) throws Exception {
                    if (log.isDebugEnabled())
                        log.debug("loading table " + this + " " + tableName);
                    return con.getTable(tableName);
                }
            });
    if (log.isDebugEnabled())
        log.debug("created " + this + " pool active/idle " + pool.getNumActive() + "/" + pool.getNumIdle());
}

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From source file:za.co.wilderness.WildernessPoolingDriver.java

public Connection GetPoolConnection() throws Exception {

    Connection conn = null;/*from   w  ww.  j  a  v a 2 s . c  om*/

    try {
        long startTime = System.currentTimeMillis();
        conn = DriverManager.getConnection("jdbc:apache:commons:dbcp:" + this.EXTERNAL_SERVICE.name());
        PoolingDriver driver = (PoolingDriver) DriverManager.getDriver("jdbc:apache:commons:dbcp:");
        ObjectPool<? extends Connection> connectionPool = driver
                .getConnectionPool(this.EXTERNAL_SERVICE.name());
        logger.log(Level.FINE,
                "NumActive: " + connectionPool.getNumActive() + " NumIdle: " + connectionPool.getNumIdle());
        //System.out.println("NumActive: " + connectionPool.getNumActive() + "  NumIdle: " + connectionPool.getNumIdle());
        if (connectionPool.getNumActive() == config.getMaxActive()) {
            config.setMaxActive(config.getMaxActive() + 50);
            try {
                shutdownDriver();
            } catch (Exception e) {
                logger.log(Level.FINE, e.getMessage());
            }
        }

        long endTime = System.currentTimeMillis();
        //System.out.println("Total connection time: " + this.EXTERNAL_SERVICE.name() + " "  + (endTime - startTime) );
        logger.log(Level.FINE, "Open connection for " + this.EXTERNAL_SERVICE.name());
    } catch (SQLException e) {
        //System.out.println("Create connection failed. " + e.getMessage());
        logger.log(Level.SEVERE, "Create connection failed. ", e);
        throw new Exception(e);
    }
    return conn;
}

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