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/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package com.facebook.presto.jdbc.internal.apache.http.conn;

import java.util.concurrent.TimeUnit;

import com.facebook.presto.jdbc.internal.apache.http.conn.routing.HttpRoute;
import com.facebook.presto.jdbc.internal.apache.http.conn.scheme.SchemeRegistry;

/**
 * Management interface for {@link ManagedClientConnection client connections}.
 * The purpose of an HTTP connection manager is to serve as a factory for new
 * HTTP connections, manage persistent connections and synchronize access to
 * persistent connections making sure that only one thread of execution can
 * have access to a connection at a time.
 * 

* Implementations of this interface must be thread-safe. Access to shared * data must be synchronized as methods of this interface may be executed * from multiple threads. * * @since 4.0 * * @deprecated (4.3) replaced by {@link HttpClientConnectionManager}. */ @Deprecated public interface ClientConnectionManager { /** * Obtains the scheme registry used by this manager. * * @return the scheme registry, never {@code null} */ SchemeRegistry getSchemeRegistry(); /** * Returns a new {@link ClientConnectionRequest}, from which a * {@link ManagedClientConnection} can be obtained or the request can be * aborted. */ ClientConnectionRequest requestConnection(HttpRoute route, Object state); /** * Releases a connection for use by others. * You may optionally specify how long the connection is valid * to be reused. Values <= 0 are considered to be valid forever. * If the connection is not marked as reusable, the connection will * not be reused regardless of the valid duration. * * If the connection has been released before, * the call will be ignored. * * @param conn the connection to release * @param validDuration the duration of time this connection is valid for reuse * @param timeUnit the unit of time validDuration is measured in * * @see #closeExpiredConnections() */ void releaseConnection(ManagedClientConnection conn, long validDuration, TimeUnit timeUnit); /** * Closes idle connections in the pool. * Open connections in the pool that have not been used for the * timespan given by the argument will be closed. * Currently allocated connections are not subject to this method. * Times will be checked with milliseconds precision * * All expired connections will also be closed. * * @param idletime the idle time of connections to be closed * @param tunit the unit for the {@code idletime} * * @see #closeExpiredConnections() */ void closeIdleConnections(long idletime, TimeUnit tunit); /** * Closes all expired connections in the pool. * Open connections in the pool that have not been used for * the timespan defined when the connection was released will be closed. * Currently allocated connections are not subject to this method. * Times will be checked with milliseconds precision. */ void closeExpiredConnections(); /** * Shuts down this connection manager and releases allocated resources. * This includes closing all connections, whether they are currently * used or not. */ void shutdown(); }





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