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TIBCO ComputeDB store based off Pivotal GemFireXD
/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* Licensed 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. See accompanying
* LICENSE file.
*/
package com.pivotal.gemfirexd;
import java.sql.SQLException;
import java.util.List;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
import com.gemstone.gemfire.internal.shared.ClientSharedUtils;
/**
* Base interface defining common peer services provided by {@link FabricServer}
* and {@link FabricLocator}.
*
* @author swale
*/
public interface FabricService {
// keep this same as NetworkServerControl#DEFAULT_PORTNUMBER
// must be hard coded because this code doesn't have access at compile time
/** the default port for network server */
final static int NETSERVER_DEFAULT_PORT = 1527;
/**
* Shutdown boolean property to enable/disable shutting down of all network
* servers in {@link #stop(Properties)}. Default is true.
*/
final static String STOP_NETWORK_SERVERS = "stop-netservers";
/**
* Status of the service enumerating different states the service can be in.
*
* Different states of service .
*
*
* - {@link State#UNINITIALIZED}
* - Description: This is the initial state of the status when
* service on this peer is yet to be started or the start was unsuccessful.
*
*
*
* - {@link State#STARTING}
* - Description: Service was started on the peer but is still in the
* process of booting up its driver and joining the distributed system..
*
*
*
* - {@link State#WAITING}
* - Description: This state indicates that the peer is waiting for
* other offline members of the distributed system to come online.
*
*
*
* - {@link State#RUNNING}
* - Description: Indicates that the peer is ready to service JDBC
* connections in the application program.
*
*
*
* - {@link State#STOPPING}
* - Description: The peer has initiated the shutdown process (
* {@link FabricService#stop}). No new JDBC connections will be allowed
* and existing ones will be closed. Current activity on the connection may
* raise CacheClosedException.
*
*
*
* - {@link State#STOPPED}
* - Description: The peer has successfully disconnected from
* distributed system. No new JDBC connections will be allowed and existing
* will be closed. Current activity on the connection may raise
* CacheClosedException.
*
*
*
* - {@link State#RECONNECTING}
* - Description: The peer has lost its connection to the
* distributed system and is reconnecting.
*
*
*/
enum State {
// the enumeration order represents the state transitions allowed.
// e.g. one cannot move back to STARTING if current state is RUNNING
// see FabricServiceImpl.startImpl
UNINITIALIZED, STARTING, WAITING, STANDBY, RUNNING, STOPPING, STOPPED, RECONNECTING
}
/**
* Start listening for network clients on a given host/port address. This can
* be called multiple times to bind to multiple network interfaces.
*
* By default this starts DRDA server ({@link #startDRDAServer} unless
* {@link ClientSharedUtils#USE_THRIFT_AS_DEFAULT_PROP} system property is
* set in which case it start a Thrift server {@link #startThriftServer}
*
* @param bindAddress
* The host name or IP address to bind the network server. If this is
* null then use the "bind-address" GemFire property and if found
* listens only on that address, else binds to local loopback
* address.
* @param port
* The port to bind the network server. A value <= 0 will cause
* this to use the default port {@link #NETSERVER_DEFAULT_PORT}.
* @param networkProperties
* network server properties.
* @throws SQLException
*/
NetworkInterface startNetworkServer(String bindAddress, int port,
Properties networkProperties) throws SQLException;
/**
* Start listening for Thrift clients on a given host/port address. This can
* be called multiple times to bind to multiple network interfaces.
*
* @param bindAddress
* The host name or IP address to bind the network server. If this is
* null then use the "bind-address" GemFire property and if found
* listens only on that address, else binds to local loopback
* address.
* @param port
* The port to bind the network server. A value <= 0 will cause
* this to use the default port {@link #NETSERVER_DEFAULT_PORT}.
* @param networkProperties
* network server properties.
* @throws SQLException
*/
NetworkInterface startThriftServer(String bindAddress, int port,
Properties networkProperties) throws SQLException;
/**
* Start listening for DRDA clients on a given host/port address. This can
* be called multiple times to bind to multiple network interfaces.
*
* @param bindAddress
* The host name or IP address to bind the DRDA server. If this is
* null then use the "bind-address" GemFire property and if found
* listens only on that address, else binds to local loopback
* address.
* @param port
* The port to bind the DRDA server. A value <= 0 will cause
* this to use the default port {@link #NETSERVER_DEFAULT_PORT}.
* @param networkProperties
* network server properties.
* @throws SQLException
*/
NetworkInterface startDRDAServer(String bindAddress, int port,
Properties networkProperties) throws SQLException;
/**
* Stop all the {@link NetworkInterface}s started using
* {@link #startNetworkServer(String, int, Properties)}.
*/
void stopAllNetworkServers();
/**
* Get a collection of all the {@link NetworkInterface}s started so far using
* {@link #startNetworkServer(String, int, Properties)}.
*/
List getAllNetworkServers();
/**
* Disconnect current virtual machine from distributed system. This should be
* called once for every startup of the service.
*
* @param shutdownCredentials
* Can optionally be null if Authentication is switched off,
* otherwise system user authentication credentials with which this
* instance was started.
* @throws SQLException
*/
void stop(Properties shutdownCredentials) throws SQLException;
/**
* Returns the status of this instance.
*
* @return {@linkplain State}
*/
State status();
/**
* Used to display the status of this service in SYS.MEMBERS.
* Normally same as {@link #status()} but can be overridden
* by child classes if they have other components to initialize
* before showing the service as running.
*/
default State serviceStatus() {
return status();
}
/**
* Test to see whether the FabricService is in the process of reconnecting
* and recreating the cache after it has been removed from the system
* by other members.
* This will also return true if the FabricService has finished reconnecting.
*
* @return true if the FabricService is attempting to reconnect or has finished reconnecting
*/
public boolean isReconnecting();
/**
* Wait for the FabricService to finish reconnecting to the distributed system.
* @param time amount of time to wait, or -1 to wait forever
* @param units
* @return true if the cache was reconnected
* @throws InterruptedException if the thread is interrupted while waiting
*/
public boolean waitUntilReconnected(long time, TimeUnit units) throws InterruptedException;
/**
* Force the FabricService to stop reconnecting. If the service
* is currently connected this will cause it to stop.
*
*/
public void stopReconnecting();
}