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/*
* Copyright (c) 2008, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.grizzly;
import java.io.IOException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import org.glassfish.grizzly.attributes.AttributeStorage;
import org.glassfish.grizzly.memory.MemoryManager;
import org.glassfish.grizzly.monitoring.MonitoringAware;
import org.glassfish.grizzly.monitoring.MonitoringConfig;
import org.glassfish.grizzly.utils.NullaryFunction;
/**
* Common interface, which represents any kind of connection.
*
* @param the Connection address type
*
* @author Alexey Stashok
*/
public interface Connection extends Readable, Writeable, Closeable, AttributeStorage, MonitoringAware {
/**
* Get the {@link Transport}, to which this {@link Connection} belongs to.
*
* @return the {@link Transport}, to which this {@link Connection} belongs to.
*/
Transport getTransport();
/**
* Is {@link Connection} open and ready. Returns true, if connection is open and ready, or false
* otherwise.
*
* @return true, if connection is open and ready, or false otherwise.
*/
@Override
boolean isOpen();
/**
* Checks if this Connection is open and ready to be used. If this Connection is closed - this method
* throws {@link IOException} giving the reason why this Connection was closed.
*
*/
@Override
void assertOpen() throws IOException;
/**
* Returns {@link CloseReason} if this Connection has been closed, or null otherwise.
*
* @return {@link CloseReason} if this Connection has been closed, or null otherwise
*/
CloseReason getCloseReason();
/**
* Sets the {@link Connection} mode.
*
* @param isBlocking the {@link Connection} mode. true, if {@link Connection} should operate in blocking mode,
* or false otherwise.
*/
void configureBlocking(boolean isBlocking);
/**
* @return the {@link Connection} mode. true, if {@link Connection} is operating in blocking mode, or
* false otherwise.
*/
boolean isBlocking();
@Deprecated
void configureStandalone(boolean isStandalone);
@Deprecated
boolean isStandalone();
/**
* Gets the {@link Processor}, which will process {@link Connection} I/O event. If {@link Processor} is null, -
* then {@link Transport} will try to get {@link Processor} using {@link Connection}'s
* {@link ProcessorSelector#select(IOEvent, Connection)}. If {@link ProcessorSelector}, associated withthe
* {@link Connection} is also null - will ask {@link Transport} for a {@link Processor}.
*
* @param ioEvent event to obtain the processor for
* @return the default {@link Processor}, which will process {@link Connection} I/O events.
*/
Processor obtainProcessor(IOEvent ioEvent);
/**
* Gets the default {@link Processor}, which will process {@link Connection} I/O events. If {@link Processor} is
* null, - then {@link Transport} will try to get {@link Processor} using {@link Connection}'s
* {@link ProcessorSelector#select(IOEvent, Connection)}. If {@link ProcessorSelector}, associated withthe
* {@link Connection} is also null - {@link Transport} will try to get {@link Processor} using own settings.
*
* @return the default {@link Processor}, which will process {@link Connection} I/O events.
*/
Processor getProcessor();
/**
* Sets the default {@link Processor}, which will process {@link Connection} I/O events. If {@link Processor} is
* null, - then {@link Transport} will try to get {@link Processor} using {@link Connection}'s
* {@link ProcessorSelector#select(IOEvent, Connection)}. If {@link ProcessorSelector}, associated withthe
* {@link Connection} is also null - {@link Transport} will try to get {@link Processor} using own settings.
*
* @param preferableProcessor the default {@link Processor}, which will process {@link Connection} I/O events.
*/
void setProcessor(Processor preferableProcessor);
/**
* Gets the default {@link ProcessorSelector}, which will be used to get {@link Processor} to process {@link Connection}
* I/O events, in case if this {@link Connection}'s {@link Processor} is null.
*
* @return the default {@link ProcessorSelector}, which will be used to get {@link Processor} to process
* {@link Connection} I/O events, in case if this {@link Connection}'s {@link Processor} is null.
*/
ProcessorSelector getProcessorSelector();
/**
* Sets the default {@link ProcessorSelector}, which will be used to get {@link Processor} to process {@link Connection}
* I/O events, in case if this {@link Connection}'s {@link Processor} is null.
*
* @param preferableProcessorSelector the default {@link ProcessorSelector}, which will be used to get {@link Processor}
* to process {@link Connection} I/O events, in case if this {@link Connection}'s {@link Processor} is null.
*/
void setProcessorSelector(ProcessorSelector preferableProcessorSelector);
/**
* Returns the {@link Processor} state associated with this Connection.
*
* @param state of the {@link Processor}
* @param processor {@link Processor}
* @param factory factory that is used to initialise the state
*
* @return the {@link Processor} state associated with this Connection.
*/
E obtainProcessorState(Processor processor, NullaryFunction factory);
/**
* Executes the {@link Runnable} in the thread, responsible for running the given type of event on this
* Connection. The thread will be chosen based on {@link #getTransport() Transport} settings, especially
* current I/O strategy.
*
* @param event event to get the thread pool from
* @param runnable Runnable to run in the thread
*/
void executeInEventThread(IOEvent event, Runnable runnable);
/**
* @return an associated {@link MemoryManager}. It's a shortcut for
* {@link #getTransport()}{@link Transport#getMemoryManager() .getMemoryManager()}
* @since 2.3.18
*/
MemoryManager getMemoryManager();
/**
* Get the connection peer address
*
* @return the connection peer address
*/
L getPeerAddress();
/**
* Get the connection local address
*
* @return the connection local address
*/
L getLocalAddress();
/**
* Get the default size of {@link Buffer}s, which will be allocated for reading data from {@link Connection}. The value
* less or equal to zero will be ignored.
*
* @return the default size of {@link Buffer}s, which will be allocated for reading data from {@link Connection}.
*/
int getReadBufferSize();
/**
* Set the default size of {@link Buffer}s, which will be allocated for reading data from {@link Connection}. The value
* less or equal to zero will be ignored.
*
* @param readBufferSize the default size of {@link Buffer}s, which will be allocated for reading data from
* {@link Connection}.
*/
void setReadBufferSize(int readBufferSize);
/**
* Get the default size of {@link Buffer}s, which will be allocated for writing data to {@link Connection}.
*
* @return the default size of {@link Buffer}s, which will be allocated for writing data to {@link Connection}.
*/
int getWriteBufferSize();
/**
* Set the default size of {@link Buffer}s, which will be allocated for writing data to {@link Connection}.
*
* @param writeBufferSize the default size of {@link Buffer}s, which will be allocated for writing data to
* {@link Connection}.
*/
void setWriteBufferSize(int writeBufferSize);
/**
* Get the max size (in bytes) of asynchronous write queue associated with connection.
*
* @return the max size (in bytes) of asynchronous write queue associated with connection.
*
* @since 2.2
*/
int getMaxAsyncWriteQueueSize();
/**
* Set the max size (in bytes) of asynchronous write queue associated with connection.
*
* @param maxAsyncWriteQueueSize the max size (in bytes) of asynchronous write queue associated with connection.
*
* @since 2.2
*/
void setMaxAsyncWriteQueueSize(int maxAsyncWriteQueueSize);
/**
* Returns the current value for the blocking read timeout converted to the provided {@link TimeUnit} specification. If
* this value hasn't been explicitly set, it will default to 30 seconds.
*
* @param timeUnit the {@link TimeUnit} to convert the returned result to.
* @return the read timeout value
*
* @since 2.3
*/
long getReadTimeout(TimeUnit timeUnit);
/**
* Specifies the timeout for the blocking reads. This may be overridden on a per-connection basis. A value of zero or
* less effectively disables the timeout.
*
* @param timeout the new timeout value
* @param timeUnit the {@link TimeUnit} specification of the provided value.
*
* @see Connection#setReadTimeout(long, java.util.concurrent.TimeUnit)
*
* @since 2.3
*/
void setReadTimeout(long timeout, TimeUnit timeUnit);
/**
* Returns the current value for the blocking write timeout converted to the provided {@link TimeUnit} specification. If
* this value hasn't been explicitly set, it will default to 30 seconds.
*
* @param timeUnit the {@link TimeUnit} to convert the returned result to.
* @return the write timeout value
*
* @since 2.3
*/
long getWriteTimeout(TimeUnit timeUnit);
/**
* Specifies the timeout for the blocking writes. This may be overridden on a per-connection basis. A value of zero or
* less effectively disables the timeout.
*
* @param timeout the new timeout value
* @param timeUnit the {@link TimeUnit} specification of the provided value.
*
* @see Connection#setWriteTimeout(long, java.util.concurrent.TimeUnit)
*
* @since 2.3
*/
void setWriteTimeout(long timeout, TimeUnit timeUnit);
void simulateIOEvent(final IOEvent ioEvent) throws IOException;
void enableIOEvent(final IOEvent ioEvent) throws IOException;
void disableIOEvent(final IOEvent ioEvent) throws IOException;
/**
* @return the Connection monitoring configuration {@link MonitoringConfig}.
*/
@Override
MonitoringConfig getMonitoringConfig();
/**
* Close the {@link Connection} silently, no notification required on completion or failure.
*/
@Override
void terminateSilently();
/**
* Close the {@link Connection}
*
* @return {@link Future}, which could be checked in case, if close operation will be run asynchronously
*/
@Override
GrizzlyFuture terminate();
/**
* Closes the Connection and provides the reason description.
*
* This method is similar to {@link #terminateSilently()}, but additionally provides the reason why the
* Connection will be closed.
*
*/
@Override
void terminateWithReason(IOException reason);
/**
* Gracefully close the {@link Connection}
*
* @return {@link Future}, which could be checked in case, if close operation will be run asynchronously
*/
@Override
GrizzlyFuture close();
/**
* Gracefully close the {@link Connection}
*
* @param completionHandler {@link CompletionHandler} to be called, when the connection is closed.
*
* @deprecated use {@link #close()} with the following
* {@link GrizzlyFuture#addCompletionHandler(org.glassfish.grizzly.CompletionHandler)}.
*/
@Deprecated
@Override
void close(CompletionHandler completionHandler);
/**
* Gracefully close the {@link Connection} silently, no notification required on completion or failure.
*/
@Override
void closeSilently();
/**
* Gracefully closes the Connection and provides the reason description.
*
* This method is similar to {@link #closeSilently()}, but additionally provides the reason why the Connection
* will be closed.
*
*/
@Override
void closeWithReason(IOException reason);
/**
* Add the {@link CloseListener}, which will be notified once Connection will be closed.
*
* @param closeListener {@link CloseListener}.
*
* @since 2.3
*/
@Override
void addCloseListener(org.glassfish.grizzly.CloseListener closeListener);
/**
* Remove the {@link CloseListener}.
*
* @param closeListener {@link CloseListener}.
*
* @since 2.3
*/
@Override
boolean removeCloseListener(org.glassfish.grizzly.CloseListener closeListener);
/**
* Add the {@link CloseListener}, which will be notified once Connection will be closed.
*
* @param closeListener {@link CloseListener}
*
* @deprecated use {@link #addCloseListener(org.glassfish.grizzly.CloseListener)}
*/
@Deprecated
void addCloseListener(CloseListener closeListener);
/**
* Remove the {@link CloseListener}.
*
* @param closeListener {@link CloseListener}.
* @return true if listener successfully removed
*
* @deprecated use {@link #removeCloseListener(org.glassfish.grizzly.CloseListener)}
*/
@Deprecated
boolean removeCloseListener(CloseListener closeListener);
/**
* Method gets invoked, when error occur during the Connection lifecycle.
*
* @param error {@link Throwable}.
*/
void notifyConnectionError(Throwable error);
// ------------------------------------------------------------------- Nested Classes
/**
* This interface will be removed in 3.0.
*
* @deprecated use {@link org.glassfish.grizzly.CloseListener}
*
* @see GenericCloseListener
*/
@Deprecated
interface CloseListener extends org.glassfish.grizzly.CloseListener {
@Override
void onClosed(Connection connection, CloseType type) throws IOException;
}
/**
* This enum will be removed in 3.0.
*
* @deprecated use {@link org.glassfish.grizzly.CloseType}
*/
@Deprecated
enum CloseType implements ICloseType {
LOCALLY, REMOTELY
}
}
