emmanuel/gclc-core
emmanuel/gclc-core
1
0
Fork 0
Code Issues 2 Pull Requests Projects 1 Releases Wiki Activity

Add listener for brutal disconnection

Browse Source 
Signed-off-by: Emmanuel Bigeon <emmanuel@bigeon.fr>
This commit is contained in:
Emmanuel Bigeon 2019-04-22 17:44:23 -04:00
parent dc71070dab
commit 80bd7c0ac9
6 changed files with 271 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
gclc-socket/src/main/java/net/bigeon/gclc/socket/DisconnexionListener.java Normal file
View File

@ -0,0 +1,14 @@
/**
*
*/
package net.bigeon.gclc.socket;
/** Interface for listener of brutal disconnection from a pluggable
* input/output.
*
* @author Emmanuel Bigeon */
@FunctionalInterface
public interface DisconnexionListener {
/** Indicate a brutal disconnection */
void disconnected();
}

18
gclc-socket/src/main/java/net/bigeon/gclc/socket/PluggableConsoleInput.java
View File

@ -44,6 +44,8 @@ import java.io.InputStreamReader;
import java.io.InterruptedIOException;
import java.io.PrintStream;
import java.nio.charset.StandardCharsets;
import java.util.HashSet;
import java.util.Set;
import java.util.function.Supplier;
import java.util.logging.Level;
import java.util.logging.Logger;
@ -88,6 +90,8 @@ public final class PluggableConsoleInput implements ConsoleInput {
/** The output for hints. */
private PrintStream output;
private final Set<DisconnexionListener> listeners = new HashSet<>();
// Locks
/** The lock for connexion and disconnexion of actual streams. */
private final Object connexionLock = new Object();
@ -287,11 +291,23 @@ public final class PluggableConsoleInput implements ConsoleInput {
throw e;
} catch (final IOException e) {
LOGGER.log(Level.INFO, "Communication was abrubptly interrupted", e);
disconnect();
brutalDisconnection();
}
}
connexionLock.wait(connexionTimeout);
}
return null;
}
/**
*
*/
private void brutalDisconnection() {
// clean up the disconnection
disconnect();
// notify listeners
for (final DisconnexionListener listener : listeners) {
listener.disconnected();
}
}
}

5
gclc-socket/src/main/java/net/bigeon/gclc/socket/RemoteDisconnectCommand.java
View File

@ -50,7 +50,10 @@ import net.bigeon.gclc.manager.ConsoleOutput;
/** A {@link Command} to disconnect elements from a {@link ConnexionManager}.
*
* @author Emmanuel Bigeon
* @param <T> the type of connected object */
* @param <T> the type of connected object
* @deprecated since 1.1.17, this has been moved to
* {@link RemoteDisconnectCommand}. */
@Deprecated
public final class RemoteDisconnectCommand<T> extends Command {
/** The connexion manager. */

98
gclc-socket/src/main/java/net/bigeon/gclc/socket/cmd/ConnexionListCommand.java Normal file
View File

@ -0,0 +1,98 @@
/**
* gclc-socket:net.bigeon.gclc.socket.RemoteDisconnectCommand.java
* Created on: Nov 18, 2017
*/
package net.bigeon.gclc.socket.cmd;
/*-
* #%L
* GCLC Socket
* %%
* Copyright (C) 2016 - 2018 Bigeon
* %%
* This software is governed by the CeCILL license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/ or redistribute the software under the terms of the CeCILL
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty and the software's author, the holder of the
* economic rights, and the successive licensors have only limited
* liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading, using, modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean that it is complicated to manipulate, and that also
* therefore means that it is reserved for developers and experienced
* professionals having in-depth computer knowledge. Users are therefore
* encouraged to load and test the software's suitability as regards their
* requirements in conditions enabling the security of their systems and/or
* data to be ensured and, more generally, to use and operate it in the
* same conditions as regards security.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL license and that you accept its terms.
* #L%
*/
import java.io.IOException;
import java.util.Collection;
import net.bigeon.gclc.command.Command;
import net.bigeon.gclc.exception.CommandRunException;
import net.bigeon.gclc.exception.CommandRunExceptionType;
import net.bigeon.gclc.manager.ConsoleInput;
import net.bigeon.gclc.manager.ConsoleOutput;
import net.bigeon.gclc.socket.ConnexionManager;
/** A {@link Command} to disconnect elements from a {@link ConnexionManager}.
*
* @author Emmanuel Bigeon
* @param <T> the type of connected object */
public final class ConnexionListCommand<T> extends Command {
/** The connexion manager. */
private final ConnexionManager<T> manager;
/** Create the connexion listing command.
*
* @param name the command name
* @param manager the manager */
public ConnexionListCommand(final String name, final ConnexionManager<T> manager) {
super(name);
this.manager = manager;
}
/* (non-Javadoc)
* @see fr.bigeon.gclc.command.ICommand#execute(fr.bigeon.gclc.manager.
* ConsoleOutput, fr.bigeon.gclc.manager.ConsoleInput, java.lang.String[]) */
@Override
public void execute(final ConsoleOutput out, final ConsoleInput in,
final String... args) throws CommandRunException {
final Collection<String> coll = manager.getConnected();
try {
for (final String string : coll) {
out.println(string);
}
} catch (final IOException e) {
throw new CommandRunException(CommandRunExceptionType.INTERACTION,
"User cannot be notified", e);
}
}
/* (non-Javadoc)
* @see fr.bigeon.gclc.command.ICommand#tip() */
@Override
public String tip() {
return "List current connexions."; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see fr.bigeon.gclc.command.Command#usageDetail() */
@Override
protected String usageDetail() {
return "";
}
}

130
gclc-socket/src/main/java/net/bigeon/gclc/socket/cmd/RemoteDisconnectCommand.java Normal file
View File

@ -0,0 +1,130 @@
/**
* gclc-socket:net.bigeon.gclc.socket.RemoteDisconnectCommand.java
* Created on: Nov 18, 2017
*/
package net.bigeon.gclc.socket.cmd;
/*-
* #%L
* GCLC Socket
* %%
* Copyright (C) 2016 - 2018 Bigeon
* %%
* This software is governed by the CeCILL license under French law and
* abiding by the rules of distribution of free software. You can use,
* modify and/ or redistribute the software under the terms of the CeCILL
* license as circulated by CEA, CNRS and INRIA at the following URL
* "http://www.cecill.info".
*
* As a counterpart to the access to the source code and rights to copy,
* modify and redistribute granted by the license, users are provided only
* with a limited warranty and the software's author, the holder of the
* economic rights, and the successive licensors have only limited
* liability.
*
* In this respect, the user's attention is drawn to the risks associated
* with loading, using, modifying and/or developing or reproducing the
* software by the user in light of its specific status of free software,
* that may mean that it is complicated to manipulate, and that also
* therefore means that it is reserved for developers and experienced
* professionals having in-depth computer knowledge. Users are therefore
* encouraged to load and test the software's suitability as regards their
* requirements in conditions enabling the security of their systems and/or
* data to be ensured and, more generally, to use and operate it in the
* same conditions as regards security.
*
* The fact that you are presently reading this means that you have had
* knowledge of the CeCILL license and that you accept its terms.
* #L%
*/
import java.io.IOException;
import java.text.MessageFormat;
import java.util.Collection;
import net.bigeon.gclc.command.Command;
import net.bigeon.gclc.exception.CommandRunException;
import net.bigeon.gclc.exception.CommandRunExceptionType;
import net.bigeon.gclc.manager.ConsoleInput;
import net.bigeon.gclc.manager.ConsoleOutput;
import net.bigeon.gclc.socket.ConnexionManager;
/** A {@link Command} to disconnect elements from a {@link ConnexionManager}.
*
* @author Emmanuel Bigeon
* @param <T> the type of connected object */
public final class RemoteDisconnectCommand<T> extends Command {
/** The connexion manager. */
private final ConnexionManager<T> manager;
/** If all connexion should be disconnected when no argument have been
* specified. */
private final boolean all;
/** Create the disconnection command.
*
* @param name the command name
* @param manager the manager
* @param all if all elements should be disconnected when no argument is
* provided */
public RemoteDisconnectCommand(final String name, final ConnexionManager<T> manager,
final boolean all) {
super(name);
this.manager = manager;
this.all = all;
}
/* (non-Javadoc)
* @see fr.bigeon.gclc.command.ICommand#execute(fr.bigeon.gclc.manager.
* ConsoleOutput, fr.bigeon.gclc.manager.ConsoleInput, java.lang.String[]) */
@Override
public void execute(final ConsoleOutput out, final ConsoleInput in,
final String... args) throws CommandRunException {
if (args.length == 0 && all) {
final Collection<String> coll = manager.getConnected();
for (final String string : coll) {
manager.disconnect(string);
}
}
for (final String string : args) {
if (manager.isConnected(string)) {
manager.disconnect(string);
} else {
print(out,
MessageFormat.format("[WARNING] {0} is not connected", string)); //$NON-NLS-1$
}
}
}
/** Print a message if the output is defined.
*
* @param out the output
* @param string the message
* @throws CommandRunException if the output exists but cannot be printed to */
private static void print(final ConsoleOutput out, final String string)
throws CommandRunException {
if (out != null) {
try {
out.println(string);
} catch (final IOException e) {
throw new CommandRunException(CommandRunExceptionType.INTERACTION,
"Unable to print to existing output", e); //$NON-NLS-1$
}
}
}
/* (non-Javadoc)
* @see fr.bigeon.gclc.command.ICommand#tip() */
@Override
public String tip() {
return "Close a connexion."; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see fr.bigeon.gclc.command.Command#usageDetail() */
@Override
protected String usageDetail() {
return MessageFormat.format(
" If arguments are provided the corresponding connexions are closed, otherwise\n{0} are.",
all ? "all connexions" : "none");
}
}

8
gclc-socket/src/main/java/net/bigeon/gclc/socket/cmd/package-info.java Normal file
View File

@ -0,0 +1,8 @@
/**
*
*/
/**
* @author Emmanuel Bigeon
*
*/
package net.bigeon.gclc.socket.cmd;