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SnappyData 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.net.Socket;
import java.util.Properties;
import com.pivotal.gemfirexd.thrift.ServerType;
/**
* Encapsulates a network listener that clients can use to connect using
* GemFireXD JDBC client driver (URL of the form
* 'jdbc:gemfirexd://<host>:<port>'). A new interface can be created
* using {@link FabricServer#startNetworkServer(String, int, Properties)} -- see
* {@link FabricServer} API for details.
*
* @see FabricServer
*
* @author Soubhik C
*/
public interface NetworkInterface {
/**
* Get the type of this server (DRDA or one of the Thrift server
* configuration).
*/
ServerType getServerType();
/**
* Stop listening on network clients on this network server control.
*/
void stop();
/**
* Whether the network server is listening on the configured port or not.
*
* @return true if server socket is open for connection, otherwise
* false.
*/
boolean status();
/**
* Turn tracing on or off for all sessions on the Network Server.
*
* @param on
* true to turn tracing on, false to turn tracing off.
*/
public void trace(boolean on);
/**
* Turn tracing on or off for the specified connection on the Network Server.
*
* @param connNum
* connection number. Note: Connection numbers will print in the
* GemFireXD error log if logConnections is on.
* @param on
* true to turn tracing on, false to turn tracing off.
*/
public void trace(int connNum, boolean on);
/**
* Turn logging connections on or off. When logging is turned on a message is
* written to the GemFireXD log each time a connection is made.
*
* @param on
* true to turn on, false to turn off
*/
public void logConnections(boolean on);
/**
* Set directory for trace files. The directory must be on the machine where
* the server is running.
*
* @param traceDirectory
* directory for trace files on machine where server is running
*/
public void setTraceDirectory(String traceDirectory);
/**
* Set a new {@link ConnectionListener} for this network server. This will
* replace any old listener if any.
*
* @param listener
* the {@link ConnectionListener} to be added
*/
public void setConnectionListener(ConnectionListener listener);
/**
* Return classpath and version information about the running Network Server.
*
* @return sysinfo output
*/
public String getSysinfo();
/**
* Return detailed session runtime information about sessions, prepared
* statements, and memory usage for the running Network Server.
*
* @return run time information
*/
public String getRuntimeInfo();
/**
* Set Network Server maxthread parameter. This is the maximum number of
* threads that will be used for JDBC client connections. setTimeSlice should
* also be set so that clients will yield appropriately.
*
* @param max
* maximum number of connection threads. If <= 0, connection
* threads will be created when there are no free connection threads.
*
* @see #setTimeSlice
*/
public void setMaxThreads(int max);
/**
* Returns the current maxThreads setting for the running Network Server
*
* @return maxThreads setting
*
* @see #setMaxThreads
*/
public int getMaxThreads();
/**
* Set Network Server connection time slice parameter after which client
* connections will yield. This should be set and is only relevant if
* setMaxThreads > 0.
*
* @param timeslice
* number of milliseconds given to each session before yielding to
* another session, if <=0, never yield.
*
* @see #setMaxThreads
*/
public void setTimeSlice(int timeslice);
/**
* Return the current timeSlice setting for the running Network Server
*
* @return timeSlice setting
*
* @see #setTimeSlice
*/
public int getTimeSlice();
/**
* Get current Network server properties
*
* @return Properties object containing Network server properties
*/
public Properties getCurrentProperties();
/**
* Get the string representation of this NetworkInterface in
* '<host>/<bind-address>[<port>]' format.
*/
public String asString();
/**
* Get the total number of current connections to this network server.
*/
public int getTotalConnections();
/**
* Get the host name of this network server.
*/
public String getHostName();
/**
* Get the port of this network server.
*/
public int getPort();
/**
* A listener which can be registered on {@link NetworkInterface}
* in order to receive events about connections created or destroyed for a
* client on the DRDA network server.
*
* @author swale
*/
public interface ConnectionListener {
/**
* Indicates that a new connection has been opened to this network server.
*
* @param clientSocket
* the {@link Socket} object created for the client
* @param connectionNumber
* the connection number for this client connection that gets
* incremented for every new client connection
*/
void connectionOpened(Socket clientSocket, int connectionNumber);
/**
* Indicates that the a connection to this network server has been closed.
*
* @param clientSocket
* the {@link Socket} object created for the client
* @param connectionNumber
* the connection number for this client connection that gets
* incremented for every new client connection
*/
void connectionClosed(Socket clientSocket, int connectionNumber);
/**
* Close any artifacts of this connection listener. Invoked when the network
* server has been stopped cleanly.
*/
void close();
}
}