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/*
* Copyright 2004-2006 Stefan Reuter
*
* 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.
*
*/
package org.asteriskjava.live;
import java.util.Date;
import java.util.List;
import java.util.Map;
import org.asteriskjava.util.MixMonitorDirection;
/**
* Represents an Asterisk channel.
*
* PropertyChangeEvents are fired for the following properties:
*
* - id
*
- name
*
- callerId
*
- state
*
- account
*
- currentExtension
*
- callDetailRecord
*
- dialedChannel
*
- dialingChannel
*
- linkedChannel
*
- meetMeUser
*
- queueEntry
*
- parkedAt
*
- parkingLot
*
- dtmfReceived
*
- dtmfSent
*
*
* @author srt
*/
public interface AsteriskChannel extends LiveObject
{
String PROPERTY_ID = "id";
String PROPERTY_NAME = "name";
String PROPERTY_CALLER_ID = "callerId";
String PROPERTY_STATE = "state";
String PROPERTY_ACCOUNT = "account";
String PROPERTY_CURRENT_EXTENSION = "currentExtension";
String PROPERTY_CALL_DETAIL_RECORD = "callDetailRecord";
String PROPERTY_DIALED_CHANNEL = "dialedChannel";
String PROPERTY_DIALING_CHANNEL = "dialingChannel";
String PROPERTY_LINKED_CHANNEL = "linkedChannel";
String PROPERTY_MEET_ME_USER = "meetMeUser";
String PROPERTY_QUEUE_ENTRY = "queueEntry";
String PROPERTY_PARKED_AT = "parkedAt";
String PROPERTY_PARKING_LOT = "parkingLot";
String PROPERTY_DTMF_RECEIVED = "dtmfReceived";
String PROPERTY_DTMF_SENT = "dtmfSent";
String PROPERTY_MONITORED = "monitored";
String VARIABLE_MONITOR_EXEC = "MONITOR_EXEC";
String VARIABLE_MONITOR_EXEC_ARGS = "MONITOR_EXEC_ARGS";
/** Pseudo-variable to store {@link org.asteriskjava.manager.event.DialEvent#getDialStatus()} */
String VAR_AJ_DIAL_STATUS = "AJ_DIAL_STATUS";
/**
* Returns the unique id of this channel, for example "1099015093.165".
*
* @return the unique id of this channel.
*/
String getId();
/**
* Returns the name of this channel, for example "SIP/1310-20da".
*
* @return the name of this channel.
*/
String getName();
/**
* Returns the caller id of this channel.
*
* @return the caller id of this channel.
*/
CallerId getCallerId();
/**
* Returns the state of this channel.
*
* @return the state of this channel.
*/
ChannelState getState();
/**
* Checks if this channel was at least once in the given state.
*
* For example you can use this method the check if this channel had been
* answered:
*
*
* boolean answered = channel.wasInState(ChannelState.UP);
*
*
* @param state the state to look for.
* @return true if this channel was at least once in the
* given state; false otherwise.
* @since 0.3
*/
boolean wasInState(ChannelState state);
/**
* Checks if this channel was busy.
*
* @return true if this channel was busy; false
* otherwise.
* @since 0.3
*/
boolean wasBusy();
/**
* Returns the account code used to bill this channel.
*
* @return the account code used to bill this channel.
*/
String getAccount();
/**
* Returns the last visited dialplan entry.
*
* @return the last visited dialplan entry.
* @since 0.2
*/
Extension getCurrentExtension();
/**
* Returns the first visited dialplan entry.
*
* @return the first visited dialplan entry.
* @since 0.2
*/
Extension getFirstExtension();
/**
* Returns a list of all visited dialplan entries.
*
* @return a list of all visited dialplan entries.
* @since 0.3
*/
List getExtensionHistory();
/**
* Returns the date this channel has been created.
*
* This property is immutable.
*
* @return the date this channel has been created.
*/
Date getDateOfCreation();
/**
* Returns the date this channel has left the Asterisk server for example by
* a hangup.
*
* @return the date this channel has left the Asterisk server or
* null if this channel is still active.
* @since 0.3
*/
Date getDateOfRemoval();
/**
* Returns the reason for hangup.
*
* @return the reason for hangup or null if the channel has
* not yet been hung up or no hangup cause is available for this
* type of channel.
* @since 0.3
*/
HangupCause getHangupCause();
/**
* Returns a textual representation of the reason for hangup.
*
* @return the textual representation of the reason for hangup or
* null if the channel has not yet been hung up or no
* hangup cause is available for this type of channel. If no hangup
* cause is available an empty String may be returned, too.
* @since 0.3
*/
String getHangupCauseText();
/**
* Returns the call detail record for this channel.
*
* @return the call detail record for this channel or null if
* none has (yet) been received.
*/
CallDetailRecord getCallDetailRecord();
/**
* Returns the channel that has been dialed by this channel most recently,
* this is the destination channel that was created because this channel
* dialed it.
*
* @return the channel that has been dialed by this channel or
* null if none has been dialed.
*/
AsteriskChannel getDialedChannel();
/**
* Returns a list of all channels that have been dialed by this channel.
*
* @return a list of all channels that have been dialed by this channel.
*/
List getDialedChannelHistory();
/**
* Returns the channel that was dialing this channel, this is the source
* channel that created this channel by dialing it.
*
* @return the channel that was dialing this channel or null
* if none was dialing.
*/
AsteriskChannel getDialingChannel();
/**
* Returns the channel set that are dialing this channel, this is the source
* channel that created this channel by dialing it.
*
* @return the channel set that is dialing this channel or null
* if none was dialing.
*/
List getDialedChannels();
/**
* Returns the channel this channel is currently bridged with, if any.
*
* @return the channel this channel is bridged with, or null
* if this channel is currently not bridged to another channel.
*/
AsteriskChannel getLinkedChannel();
/**
* Returns a list of all channels this channel was briged with.
*
* @return a list of all channels this channel was briged with.
*/
List getLinkedChannelHistory();
/**
* Indicates if this channel was linked to another channel at least once.
*
* @return true if this channel was linked to another channel
* at least once, false otherwise.
* @since 0.2
*/
boolean wasLinked();
/**
* Returns the MeetMeUser associated with this channel if this channel is
* currently taking part in a MeetMe conference.
*
* @return the MeetMeUser associated with this channel or null
* if this channel is currently not taking part in a MeetMe
* conference.
*/
MeetMeUser getMeetMeUser();
/**
* Returns the queue entry associated with this channel.
*
* @return the queue entry associated with this channel if any, null otherwise.
*/
AsteriskQueueEntry getQueueEntry();
/**
* Return the extension to dial to pickup he channel of the parking if the channel is
* currently parked.
*
* @return the Extension to dial, null if not currently parked.
*/
Extension getParkedAt();
/**
* Return the name of the parkinglot where the channel is currently parked.
*
* @return the name of the parkinglot used to park, null if not currently parked.
*/
String getParkingLot();
/**
* Returns the channel variables as received by
* {@link org.asteriskjava.manager.event.VarSetEvent VarSetEvents}.
* Available since Asterisk 1.6.
*
* @return the channel variables.
* @since 1.0.0
*/
Map getVariables();
/**
* Returns the last DTMF digit received on this channels.
*
* @return the last DTMF digit received on this channels or null if none has yet been received.
* @since 1.0.0
*/
Character getDtmfReceived();
/**
* Returns the last DTMF digit sent on this channels.
*
* @return the last DTMF digit sent on this channels or null if none has yet been sent.
* @since 1.0.0
*/
Character getDtmfSent();
/**
* Return the actual MONITOR state.
*
* @return the actual Monitor state of this channel.
* @since 1.0.1
*/
boolean isMonitored();
/* Actions */
/**
* Hangs up this channel.
*
* @throws ManagerCommunicationException if the hangup action cannot be sent
* to Asterisk.
* @throws NoSuchChannelException if this channel had already been hung up
* before the hangup was sent.
* @since 0.3
*/
void hangup() throws ManagerCommunicationException, NoSuchChannelException;
/**
* Hangs up this channel using a given cause code. The cause code is mainly
* used for Zap PRI channels where it makes Asterisk send a PRI DISCONNECT
* message with the set CAUSE element to the switch.
*
* @param cause the cause code to send.
* @throws ManagerCommunicationException if the hangup action cannot be sent
* to Asterisk.
* @throws NoSuchChannelException if this channel had already been hung up
* before the hangup was sent.
* @since 0.3
*/
void hangup(HangupCause cause) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Sets the absolute maximum amount of time permitted for a call on a given
* channel, it hangs up the channel after this time.
*
* Time is counted from when you call setAbsoluteTimeout, not from the
* beginning of the call.
*
* @param seconds maximum duration of the call in seconds, 0 for unlimited
* call length.
* @throws ManagerCommunicationException if the absolute timeout action
* cannot be sent to Asterisk.
* @throws NoSuchChannelException if this channel had already been hung up
* before the absolute timeout was set.
* @since 0.3
*/
//TODO exception when setting it to 0: NoSuchChannelException: Channel
// 'SIP/248-0a02fcd0' is not available: No timeout specified
void setAbsoluteTimeout(int seconds) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Redirects this channel to a new extension.
*
* If this channel is linked to another channel, the linked channel is hung
* up.
*
* @param context the destination context.
* @param exten the destination extension.
* @param priority the destination priority.
* @throws ManagerCommunicationException if the redirect action cannot be
* sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* the redirect was sent.
* @since 0.3
*/
void redirect(String context, String exten, int priority) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Redirects this channel and the channel this channel is linked to to a new
* extension.
*
* If this channel is not linked to another channel only this channel is
* redirected.
*
* @param context the destination context.
* @param exten the destination extension.
* @param priority the destination priority.
* @throws ManagerCommunicationException if the redirect action cannot be
* sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* the redirect was sent.
* @since 0.3
*/
void redirectBothLegs(String context, String exten, int priority) throws ManagerCommunicationException,
NoSuchChannelException;
/**
* Returns the value of the given channel variable.
*
* Currently Asterisk does not support the retrieval of built-in variables
* like EXTEN or CALLERIDNUM but only custom variables set via Asterisk's
* Set command or via {@link #setVariable(String, String)}.
*
* @param variable the name of the channel variable to return.
* @return the value of the channel variable or null if it is
* not set.
* @throws ManagerCommunicationException if the get variable action cannot
* be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* the variable was requested.
* @since 0.3
*/
String getVariable(String variable) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Sets the value of the given channel variable.
*
* @param variable the name of the channel variable to set.
* @param value the value of the channel variable to set.
* @throws ManagerCommunicationException if the set variable action cannot
* be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* the variable was set.
* @since 0.3
*/
void setVariable(String variable, String value) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Plays the given DTMF digit on this channel.
*
* Available since Asterisk 1.2.8
*
* @param digit the DTMF digit to play.
* @throws ManagerCommunicationException if the play DTMF action cannot be
* sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* the DTMF digit was set.
* @throws IllegalArgumentException if the digit is null.
* @since 0.3
*/
void playDtmf(String digit) throws ManagerCommunicationException, NoSuchChannelException, IllegalArgumentException;
/**
* Starts monitoring (recording) this channel.
*
* The format of the files is "wav", they are not mixed.
*
* The files are called filename-in.wav and filename-out.wav.
*
* @param filename the basename of the files created in the monitor spool
* directory. If null the channel name (with
* slashed replaced by dashes) is used.
* @throws ManagerCommunicationException if the monitor action cannot be
* sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* starting monitoring.
* @see #stopMonitoring()
* @see #pauseMonitoring()
* @since 0.3
*/
void startMonitoring(String filename) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Starts monitoring (recording) this channel using the given audio format.
*
* The files are not mixed.
*
* The files are called filename-in.format and filename-out.format.
*
* @param filename the basename of the files created in the monitor spool
* directory. If null the channel name (with
* slashed replaced by dashes) is used.
* @param format the audio recording format. If null wav is
* used.
* @throws ManagerCommunicationException if the monitor action cannot be
* sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* starting monitoring.
* @see #stopMonitoring()
* @see #pauseMonitoring()
* @since 0.3
*/
void startMonitoring(String filename, String format) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Starts monitoring (recording) this channel using the given audio format
* and optionally mixing input and output data after recording is finished.
*
* Mixing is done by soxmix by default (which has to be installed on your
* Asterisk server). You can use your own script by setting the variable
* MONITOR_EXEC to your custom script before starting
* monitoring the channel. Your script is then called with 3 arguments, the
* two leg files and a target mixed file name which is the same as the leg
* file names without the in/out designator, i.e. filename.format.
* The two leg files are only removed by Asterisk if
* MONITOR_EXEC is not set. If you use a custom script and
* want to remove them, just let your script do this.
* To pass additional arguments to your script you can set the variable
* MONITOR_EXEC_ARGS to a list of arguments (separated by
* spaces).
*
* Example:
*
*
* AsteriskChannel c;
*
* [...]
* c.setVariable(AsteriskChannel.VARIABLE_MONITOR_EXEC, "/usr/local/bin/2wav2mp3");
* c.startMonitoring("my-recording", "wav", true);
*
*
* Side note: 2wav2mp3 is a nice script by Dietmar Zlabinger to mix the two
* legs to a stero mp3 file, for details see
* voip-info.org.
*
* @param filename the basename of the file(s) created in the monitor spool
* directory. If null the channel name (with
* slashed replaced by dashes) is used.
* @param format the audio recording format. If null wav is
* used.
* @param mix true to mix input and output data together
* after recording is finished, false to not mix
* them.
* @throws ManagerCommunicationException if the monitor action cannot be
* sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* starting monitoring.
* @see #VARIABLE_MONITOR_EXEC
* @see #VARIABLE_MONITOR_EXEC_ARGS
* @see #stopMonitoring()
* @see #pauseMonitoring()
* @since 0.3
*/
void startMonitoring(String filename, String format, boolean mix) throws ManagerCommunicationException,
NoSuchChannelException;
/**
* Changes the filename of a previously started monitoring.
*
* If the channel exists but is not currently monitored your request is
* ignored and a warning message is written to Asterisk's CLI.
*
* Use with care, this doesn't always seem to work.
*
* @param filename the basename of the file(s) created in the monitor spool
* directory.
* @throws ManagerCommunicationException if the change monitor action cannot
* be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* changing monitoring.
* @throws IllegalArgumentException if filename is null.
* @see #stopMonitoring()
* @see #pauseMonitoring()
* @since 0.3
*/
void changeMonitoring(String filename) throws ManagerCommunicationException, NoSuchChannelException,
IllegalArgumentException;
/**
* Stops monitoring this channel.
*
* If the channel exists but is not currently monitored your request is
* ignored.
*
* @throws ManagerCommunicationException if the stop monitor action cannot
* be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* stopping monitoring.
* @see #startMonitoring(String)
* @see #startMonitoring(String, String)
* @see #startMonitoring(String, String, boolean)
* @since 0.3
*/
void stopMonitoring() throws ManagerCommunicationException, NoSuchChannelException;
/**
* Temporarily stops monitoring this channel.
*
* If the channel exists but is not currently monitored your request is
* ignored.
*
* This method is available since Asterisk 1.4.
*
* @throws ManagerCommunicationException if the pause monitor action cannot
* be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* temporarily stopping monitoring.
* @see #unpauseMonitoring()
* @since 0.3
*/
void pauseMonitoring() throws ManagerCommunicationException, NoSuchChannelException;
/**
* Re-enables monitoring this channel after calling
* {@link #pauseMonitoring()}.
*
* If the channel exists but monitoring has not been paused your request is
* ignored.
*
* This method is available since Asterisk 1.4.
*
* @throws ManagerCommunicationException if the unpause monitor action
* cannot be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* re-enabling monitoring.
* @see #pauseMonitoring()
* @since 0.3
*/
void unpauseMonitoring() throws ManagerCommunicationException, NoSuchChannelException;
/**
* Temporarily stops monitoring this channel if this is monitored with MixMonitor.
*
* If the channel exists but is not currently monitored your request is
* ignored.
*
*
* @throws ManagerCommunicationException if the pause monitor action cannot
* be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* temporarily stopping monitoring.
* @see #unPauseMixMonitor(org.asteriskjava.util.MixMonitorDirection)
* @since 1.0.0
*/
void pauseMixMonitor(MixMonitorDirection direction) throws ManagerCommunicationException, NoSuchChannelException;
/**
* Re-enables monitoring this channel after calling
* {@link #pauseMixMonitor(org.asteriskjava.util.MixMonitorDirection)} ()}
* if this is monitored with MixMonitor
*
* If the channel exists but monitoring has not been paused your request is
* ignored.
*
*
* @throws ManagerCommunicationException if the unpause monitor action
* cannot be sent to Asterisk.
* @throws NoSuchChannelException if this channel had been hung up before
* re-enabling monitoring.
* @see #pauseMixMonitor(org.asteriskjava.util.MixMonitorDirection)
* @since 1.0.0
*/
void unPauseMixMonitor(MixMonitorDirection direction) throws ManagerCommunicationException, NoSuchChannelException;
}