mirror of https://github.com/asterisk/asterisk
This patch removes res_ais and introduces a new module, res_corosync. The OpenAIS project is deprecated and is now just a wrapper around Corosync. This module provides the same functionality using the same core infrastructure, but without the use of the deprecated components. Technically res_ais could have been used with an AIS implementation other than OpenAIS, but that is the only one I know of that was ever used. Review: https://reviewboard.asterisk.org/r/1700/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@354046 65c4cc65-6c06-0410-ace0-fbb531ad65f3certified/11.2
Russell Bryant
13 years ago
parent
a898eb4d07
commit
055a19e128
@ -1,85 +0,0 @@
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;
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; Sample configuration file for res_ais
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; * SAForum AIS (Application Interface Specification)
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;
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; More information on the AIS specification is available from the SAForum.
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; * http://www.saforum.org/
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;
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; A nice open source implementation of AIS is available called openais. Visit
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; the openais website for downloads and more information.
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; * http://www.openais.org/
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;
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;
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; *** NOTE ***
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; This document includes some information about using the res_ais module for
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; distributed events. However, it is important to note that res_ais is still
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; considered experimental, as the module exposes the binary format of events
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; over the network between servers. This format is still subject to change
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; between 1.6.X releases.
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; ************
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;
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; [general]
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; The general section is reserved but not currently used.
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;
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;
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; Event channels are named distributed groups that share events. Each node
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; that is the member of the event channel should have an entry in their
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; ais.conf file that indicates that they are a member of the event channel.
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; Each node's entry for the event channel also indicates which event types
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; will be published to other nodes, as well as which event types this node
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; will subscribe to from other nodes in the event channel.
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;
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; The name of the event channel is the name in brackets that begin a section
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; in the configuration file.
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; [mwi]
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;
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; To define an event channel, this entry must be in the configuration section:
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; type=event_channel
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;
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; Indicate that a node is capable of publishing events of a certain type by
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; using the publish_event directive.
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; publish_event=mwi
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;
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; Indicate that a node is interested in receiving events of a certain type
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; from other nodes in the event channel by using the subscribe_event directive.
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; subscribe_event=mwi
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;
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; Supported event types include: mwi, device_state
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;
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;
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; This example is for a node that can provide MWI state information, but should
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; also be listening for MWI state changes from other nodes. Examples of when
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; this would be used are when this is both a voicemail server and also has
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; phones directly registered to it.
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;
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; [mwi]
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; type=event_channel
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; publish_event=mwi
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; subscribe_event=mwi
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;
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;
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; This example would be used for a node that can provide MWI state to other
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; nodes, but does not need to know about MWI state changes that happen on
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; any other node. This would most likely be a voicemail server where no
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; phones are directly registered.
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;
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; [mwi]
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; type=event_channel
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; publish_event=mwi
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;
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;
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; This example would be used for a node that has phones directly registered
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; to it, but does not have direct access to voicemail. So, this node wants
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; to be informed about MWI state changes on other voicemail server nodes, but
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; is not capable of publishing any state changes.
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;
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; [mwi]
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; type=event_channel
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; subscribe_event=mwi
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;
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@ -0,0 +1,31 @@
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;
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; Sample configuration file for res_corosync.
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;
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; This module allows events to be shared amongst a local cluster of
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; Asterisk servers. Specifically, the types of events that may be
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; shared include:
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;
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; - Device State (for shared presence information)
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;
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; - Message Waiting Indication, or MWI (to allow Voicemail to live on
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; a server that is different from where the phones are registered)
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;
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; For more information about Corosync, see: http://www.corosync.org/
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;
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[general]
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;
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; Publish Message Waiting Indication (MWI) events from this server to the
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; cluster.
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;publish_event = mwi
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;
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; Subscribe to MWI events from the cluster.
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;subscribe_event = mwi
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;
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; Publish Device State (presence) events from this server to the cluster.
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;publish_event = device_state
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;
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; Subscribe to Device State (presence) events from the cluster.
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;subscribe_event = device_state
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;
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@ -1,48 +0,0 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007, Digium, Inc.
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*
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* Russell Bryant <russell@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \author Russell Bryant <russell@digium.com>
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*
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* \brief Usage of the SAForum AIS (Application Interface Specification)
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*
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* \arg http://www.openais.org/
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*/
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#ifndef RES_AIS_AIS_H
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#define RES_AIS_AIS_H
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#include <saAis.h>
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#include <saClm.h>
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#include <saEvt.h>
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extern SaVersionT ais_version;
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extern SaClmHandleT clm_handle;
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extern SaEvtHandleT evt_handle;
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int ast_ais_clm_load_module(void);
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int ast_ais_clm_unload_module(void);
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int ast_ais_evt_load_module(void);
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int ast_ais_evt_unload_module(void);
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const char *ais_err2str(SaAisErrorT error);
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#endif /* RES_AIS_AIS_H */
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@ -1,168 +0,0 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007, Digium, Inc.
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*
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* Russell Bryant <russell@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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* \author Russell Bryant <russell@digium.com>
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*
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* \brief Usage of the SAForum AIS (Application Interface Specification)
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*
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* \arg http://www.openais.org/
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*
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* This file contains the code specific to the use of the CLM
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* (Cluster Membership) Service.
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$");
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include "ais.h"
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#include "asterisk/module.h"
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#include "asterisk/utils.h"
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#include "asterisk/cli.h"
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#include "asterisk/logger.h"
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SaClmHandleT clm_handle;
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static SaAisErrorT clm_init_res;
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static void clm_node_get_cb(SaInvocationT invocation,
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const SaClmClusterNodeT *cluster_node, SaAisErrorT error);
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static void clm_track_cb(const SaClmClusterNotificationBufferT *notif_buffer,
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SaUint32T num_members, SaAisErrorT error);
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static const SaClmCallbacksT clm_callbacks = {
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.saClmClusterNodeGetCallback = clm_node_get_cb,
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.saClmClusterTrackCallback = clm_track_cb,
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};
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static void clm_node_get_cb(SaInvocationT invocation,
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const SaClmClusterNodeT *cluster_node, SaAisErrorT error)
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{
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}
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static void clm_track_cb(const SaClmClusterNotificationBufferT *notif_buffer,
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SaUint32T num_members, SaAisErrorT error)
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{
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}
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static char *ais_clm_show_members(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
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{
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int i;
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SaClmClusterNotificationBufferT buf;
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SaClmClusterNotificationT notif[64];
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SaAisErrorT ais_res;
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switch (cmd) {
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case CLI_INIT:
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e->command = "ais clm show members";
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e->usage =
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"Usage: ais clm show members\n"
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" List members of the cluster using the CLM (Cluster Membership) service.\n";
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return NULL;
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case CLI_GENERATE:
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return NULL; /* no completion */
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}
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if (a->argc != e->args)
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return CLI_SHOWUSAGE;
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buf.notification = notif;
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buf.numberOfItems = ARRAY_LEN(notif);
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ais_res = saClmClusterTrack(clm_handle, SA_TRACK_CURRENT, &buf);
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if (ais_res != SA_AIS_OK) {
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ast_cli(a->fd, "Error retrieving current cluster members.\n");
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return CLI_FAILURE;
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}
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ast_cli(a->fd, "\n"
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"=============================================================\n"
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"=== Cluster Members =========================================\n"
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"=============================================================\n"
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"===\n");
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for (i = 0; i < buf.numberOfItems; i++) {
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SaClmClusterNodeT *node = &buf.notification[i].clusterNode;
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ast_cli(a->fd, "=== ---------------------------------------------------------\n"
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"=== Node Name: %s\n"
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"=== ==> ID: 0x%x\n"
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"=== ==> Address: %s\n"
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"=== ==> Member: %s\n",
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(char *) node->nodeName.value, (int) node->nodeId,
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(char *) node->nodeAddress.value,
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node->member ? "Yes" : "No");
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ast_cli(a->fd, "=== ---------------------------------------------------------\n"
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"===\n");
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}
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ast_cli(a->fd, "=============================================================\n"
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"\n");
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return CLI_SUCCESS;
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}
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static struct ast_cli_entry ais_cli[] = {
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AST_CLI_DEFINE(ais_clm_show_members, "List current members of the cluster"),
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};
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int ast_ais_clm_load_module(void)
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{
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clm_init_res = saClmInitialize(&clm_handle, &clm_callbacks, &ais_version);
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if (clm_init_res != SA_AIS_OK) {
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ast_log(LOG_ERROR, "Could not initialize cluster membership service: %s\n",
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ais_err2str(clm_init_res));
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return -1;
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}
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ast_cli_register_multiple(ais_cli, ARRAY_LEN(ais_cli));
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return 0;
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}
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int ast_ais_clm_unload_module(void)
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{
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SaAisErrorT ais_res;
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if (clm_init_res != SA_AIS_OK) {
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return 0;
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}
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ast_cli_unregister_multiple(ais_cli, ARRAY_LEN(ais_cli));
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ais_res = saClmFinalize(clm_handle);
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if (ais_res != SA_AIS_OK) {
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ast_log(LOG_ERROR, "Problem stopping cluster membership service: %s\n",
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ais_err2str(ais_res));
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return -1;
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}
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return 0;
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}
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@ -1,583 +0,0 @@
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/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2007, Digium, Inc.
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*
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* Russell Bryant <russell@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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||||
* at the top of the source tree.
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*/
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/*!
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* \file
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* \author Russell Bryant <russell@digium.com>
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*
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* \brief Usage of the SAForum AIS (Application Interface Specification)
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*
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* \arg http://www.openais.org/
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*
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* This file contains the code specific to the use of the EVT
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* (Event) Service.
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$");
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include "ais.h"
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#include "asterisk/module.h"
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#include "asterisk/utils.h"
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#include "asterisk/cli.h"
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#include "asterisk/logger.h"
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#include "asterisk/event.h"
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#include "asterisk/config.h"
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#include "asterisk/linkedlists.h"
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#include "asterisk/devicestate.h"
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#ifndef AST_MODULE
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/* XXX HACK */
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#define AST_MODULE "res_ais"
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#endif
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SaEvtHandleT evt_handle;
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static SaAisErrorT evt_init_res;
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void evt_channel_open_cb(SaInvocationT invocation, SaEvtChannelHandleT channel_handle,
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SaAisErrorT error);
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void evt_event_deliver_cb(SaEvtSubscriptionIdT subscription_id,
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const SaEvtEventHandleT event_handle, const SaSizeT event_datalen);
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static const SaEvtCallbacksT evt_callbacks = {
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.saEvtChannelOpenCallback = evt_channel_open_cb,
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.saEvtEventDeliverCallback = evt_event_deliver_cb,
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};
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static const struct {
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const char *str;
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enum ast_event_type type;
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} supported_event_types[] = {
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{ "mwi", AST_EVENT_MWI },
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{ "device_state", AST_EVENT_DEVICE_STATE_CHANGE },
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};
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/*! Used to provide unique id's to egress subscriptions */
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static int unique_id;
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struct subscribe_event {
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AST_LIST_ENTRY(subscribe_event) entry;
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/*! This is a unique identifier to identify this subscription in the event
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* channel through the different API calls, subscribe, unsubscribe, and
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* the event deliver callback. */
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SaEvtSubscriptionIdT id;
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enum ast_event_type type;
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};
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struct publish_event {
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AST_LIST_ENTRY(publish_event) entry;
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/*! We subscribe to events internally so that we can publish them
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* on this event channel. */
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struct ast_event_sub *sub;
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enum ast_event_type type;
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};
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struct event_channel {
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AST_RWLIST_ENTRY(event_channel) entry;
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AST_LIST_HEAD_NOLOCK(, subscribe_event) subscribe_events;
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AST_LIST_HEAD_NOLOCK(, publish_event) publish_events;
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SaEvtChannelHandleT handle;
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char name[1];
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};
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static AST_RWLIST_HEAD_STATIC(event_channels, event_channel);
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void evt_channel_open_cb(SaInvocationT invocation, SaEvtChannelHandleT channel_handle,
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SaAisErrorT error)
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{
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}
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static void queue_event(struct ast_event *ast_event)
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{
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ast_event_queue_and_cache(ast_event);
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}
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void evt_event_deliver_cb(SaEvtSubscriptionIdT sub_id,
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const SaEvtEventHandleT event_handle, const SaSizeT event_datalen)
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{
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/* It is important to note that this works because we *know* that this
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* function will only be called by a single thread, the dispatch_thread.
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* If this module gets changed such that this is no longer the case, this
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* should get changed to a thread-local buffer, instead. */
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static unsigned char buf[4096];
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struct ast_event *event_dup, *event = (void *) buf;
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SaAisErrorT ais_res;
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SaSizeT len = sizeof(buf);
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if (event_datalen > len) {
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ast_log(LOG_ERROR, "Event received with size %u, which is too big\n"
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"for the allocated size %u. Change the code to increase the size.\n",
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(unsigned int) event_datalen, (unsigned int) len);
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return;
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}
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if (event_datalen < ast_event_minimum_length()) {
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ast_debug(1, "Ignoring event that's too small. %u < %u\n",
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(unsigned int) event_datalen,
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(unsigned int) ast_event_minimum_length());
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return;
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}
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ais_res = saEvtEventDataGet(event_handle, event, &len);
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if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error retrieving event payload: %s\n",
|
||||
ais_err2str(ais_res));
|
||||
return;
|
||||
}
|
||||
|
||||
if (!ast_eid_cmp(&ast_eid_default, ast_event_get_ie_raw(event, AST_EVENT_IE_EID))) {
|
||||
/* Don't feed events back in that originated locally. */
|
||||
return;
|
||||
}
|
||||
|
||||
if (!(event_dup = ast_malloc(len)))
|
||||
return;
|
||||
|
||||
memcpy(event_dup, event, len);
|
||||
|
||||
queue_event(event_dup);
|
||||
}
|
||||
|
||||
static const char *type_to_filter_str(enum ast_event_type type)
|
||||
{
|
||||
const char *filter_str = NULL;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(supported_event_types); i++) {
|
||||
if (supported_event_types[i].type == type) {
|
||||
filter_str = supported_event_types[i].str;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
return filter_str;
|
||||
}
|
||||
|
||||
static void ast_event_cb(const struct ast_event *ast_event, void *data)
|
||||
{
|
||||
SaEvtEventHandleT event_handle;
|
||||
SaAisErrorT ais_res;
|
||||
struct event_channel *event_channel = data;
|
||||
SaClmClusterNodeT local_node;
|
||||
SaEvtEventPatternArrayT pattern_array;
|
||||
SaEvtEventPatternT pattern;
|
||||
SaSizeT len;
|
||||
const char *filter_str;
|
||||
SaEvtEventIdT event_id;
|
||||
|
||||
ast_debug(1, "Got an event to forward\n");
|
||||
|
||||
if (ast_eid_cmp(&ast_eid_default, ast_event_get_ie_raw(ast_event, AST_EVENT_IE_EID))) {
|
||||
/* If the event didn't originate from this server, don't send it back out. */
|
||||
ast_debug(1, "Returning here\n");
|
||||
return;
|
||||
}
|
||||
|
||||
ais_res = saEvtEventAllocate(event_channel->handle, &event_handle);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error allocating event: %s\n", ais_err2str(ais_res));
|
||||
ast_debug(1, "Returning here\n");
|
||||
return;
|
||||
}
|
||||
|
||||
ais_res = saClmClusterNodeGet(clm_handle, SA_CLM_LOCAL_NODE_ID,
|
||||
SA_TIME_ONE_SECOND, &local_node);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error getting local node name: %s\n", ais_err2str(ais_res));
|
||||
goto return_event_free;
|
||||
}
|
||||
|
||||
filter_str = type_to_filter_str(ast_event_get_type(ast_event));
|
||||
len = strlen(filter_str) + 1;
|
||||
pattern.pattern = (SaUint8T *) filter_str;
|
||||
pattern.patternSize = len;
|
||||
pattern.allocatedSize = len;
|
||||
|
||||
pattern_array.allocatedNumber = 1;
|
||||
pattern_array.patternsNumber = 1;
|
||||
pattern_array.patterns = &pattern;
|
||||
|
||||
/*!
|
||||
* /todo Make retention time configurable
|
||||
* /todo Make event priorities configurable
|
||||
*/
|
||||
ais_res = saEvtEventAttributesSet(event_handle, &pattern_array,
|
||||
SA_EVT_LOWEST_PRIORITY, SA_TIME_ONE_MINUTE, &local_node.nodeName);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error setting event attributes: %s\n", ais_err2str(ais_res));
|
||||
goto return_event_free;
|
||||
}
|
||||
|
||||
ais_res = saEvtEventPublish(event_handle,
|
||||
ast_event, ast_event_get_size(ast_event), &event_id);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error publishing event: %s\n", ais_err2str(ais_res));
|
||||
goto return_event_free;
|
||||
}
|
||||
|
||||
return_event_free:
|
||||
ais_res = saEvtEventFree(event_handle);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error freeing allocated event: %s\n", ais_err2str(ais_res));
|
||||
}
|
||||
ast_debug(1, "Returning here (event_free)\n");
|
||||
}
|
||||
|
||||
static char *ais_evt_show_event_channels(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
||||
{
|
||||
struct event_channel *event_channel;
|
||||
|
||||
switch (cmd) {
|
||||
case CLI_INIT:
|
||||
e->command = "ais evt show event channels";
|
||||
e->usage =
|
||||
"Usage: ais evt show event channels\n"
|
||||
" List configured event channels for the (EVT) Eventing service.\n";
|
||||
return NULL;
|
||||
|
||||
case CLI_GENERATE:
|
||||
return NULL; /* no completion */
|
||||
}
|
||||
|
||||
if (a->argc != e->args)
|
||||
return CLI_SHOWUSAGE;
|
||||
|
||||
ast_cli(a->fd, "\n"
|
||||
"=============================================================\n"
|
||||
"=== Event Channels ==========================================\n"
|
||||
"=============================================================\n"
|
||||
"===\n");
|
||||
|
||||
AST_RWLIST_RDLOCK(&event_channels);
|
||||
AST_RWLIST_TRAVERSE(&event_channels, event_channel, entry) {
|
||||
struct publish_event *publish_event;
|
||||
struct subscribe_event *subscribe_event;
|
||||
|
||||
ast_cli(a->fd, "=== ---------------------------------------------------------\n"
|
||||
"=== Event Channel Name: %s\n", event_channel->name);
|
||||
|
||||
AST_LIST_TRAVERSE(&event_channel->publish_events, publish_event, entry) {
|
||||
ast_cli(a->fd, "=== ==> Publishing Event Type: %s\n",
|
||||
type_to_filter_str(publish_event->type));
|
||||
}
|
||||
|
||||
AST_LIST_TRAVERSE(&event_channel->subscribe_events, subscribe_event, entry) {
|
||||
ast_cli(a->fd, "=== ==> Subscribing to Event Type: %s\n",
|
||||
type_to_filter_str(subscribe_event->type));
|
||||
}
|
||||
|
||||
ast_cli(a->fd, "=== ---------------------------------------------------------\n"
|
||||
"===\n");
|
||||
}
|
||||
AST_RWLIST_UNLOCK(&event_channels);
|
||||
|
||||
ast_cli(a->fd, "=============================================================\n"
|
||||
"\n");
|
||||
|
||||
return CLI_SUCCESS;
|
||||
}
|
||||
|
||||
static struct ast_cli_entry ais_cli[] = {
|
||||
AST_CLI_DEFINE(ais_evt_show_event_channels, "Show configured event channels"),
|
||||
};
|
||||
|
||||
static void add_publish_event(struct event_channel *event_channel, const char *event_type)
|
||||
{
|
||||
int i;
|
||||
enum ast_event_type type = -1;
|
||||
struct publish_event *publish_event;
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(supported_event_types); i++) {
|
||||
if (!strcasecmp(event_type, supported_event_types[i].str)) {
|
||||
type = supported_event_types[i].type;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (type == -1) {
|
||||
ast_log(LOG_WARNING, "publish_event option given with invalid value '%s'\n", event_type);
|
||||
return;
|
||||
}
|
||||
|
||||
if (type == AST_EVENT_DEVICE_STATE_CHANGE && ast_enable_distributed_devstate()) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (!(publish_event = ast_calloc(1, sizeof(*publish_event)))) {
|
||||
return;
|
||||
}
|
||||
|
||||
publish_event->type = type;
|
||||
ast_debug(1, "Subscribing to event type %d\n", type);
|
||||
publish_event->sub = ast_event_subscribe(type, ast_event_cb, "AIS", event_channel,
|
||||
AST_EVENT_IE_END);
|
||||
ast_event_dump_cache(publish_event->sub);
|
||||
|
||||
AST_LIST_INSERT_TAIL(&event_channel->publish_events, publish_event, entry);
|
||||
}
|
||||
|
||||
static SaAisErrorT set_egress_subscription(struct event_channel *event_channel,
|
||||
struct subscribe_event *subscribe_event)
|
||||
{
|
||||
SaAisErrorT ais_res;
|
||||
SaEvtEventFilterArrayT filter_array;
|
||||
SaEvtEventFilterT filter;
|
||||
const char *filter_str = NULL;
|
||||
SaSizeT len;
|
||||
|
||||
/* We know it's going to be valid. It was checked earlier. */
|
||||
filter_str = type_to_filter_str(subscribe_event->type);
|
||||
|
||||
filter.filterType = SA_EVT_EXACT_FILTER;
|
||||
len = strlen(filter_str) + 1;
|
||||
filter.filter.allocatedSize = len;
|
||||
filter.filter.patternSize = len;
|
||||
filter.filter.pattern = (SaUint8T *) filter_str;
|
||||
|
||||
filter_array.filtersNumber = 1;
|
||||
filter_array.filters = &filter;
|
||||
|
||||
ais_res = saEvtEventSubscribe(event_channel->handle, &filter_array,
|
||||
subscribe_event->id);
|
||||
|
||||
return ais_res;
|
||||
}
|
||||
|
||||
static void add_subscribe_event(struct event_channel *event_channel, const char *event_type)
|
||||
{
|
||||
int i;
|
||||
enum ast_event_type type = -1;
|
||||
struct subscribe_event *subscribe_event;
|
||||
SaAisErrorT ais_res;
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(supported_event_types); i++) {
|
||||
if (!strcasecmp(event_type, supported_event_types[i].str)) {
|
||||
type = supported_event_types[i].type;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (type == -1) {
|
||||
ast_log(LOG_WARNING, "subscribe_event option given with invalid value '%s'\n", event_type);
|
||||
return;
|
||||
}
|
||||
|
||||
if (type == AST_EVENT_DEVICE_STATE_CHANGE && ast_enable_distributed_devstate()) {
|
||||
return;
|
||||
}
|
||||
|
||||
if (!(subscribe_event = ast_calloc(1, sizeof(*subscribe_event)))) {
|
||||
return;
|
||||
}
|
||||
|
||||
subscribe_event->type = type;
|
||||
subscribe_event->id = ast_atomic_fetchadd_int(&unique_id, +1);
|
||||
|
||||
ais_res = set_egress_subscription(event_channel, subscribe_event);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error setting up egress subscription: %s\n",
|
||||
ais_err2str(ais_res));
|
||||
free(subscribe_event);
|
||||
return;
|
||||
}
|
||||
|
||||
AST_LIST_INSERT_TAIL(&event_channel->subscribe_events, subscribe_event, entry);
|
||||
}
|
||||
|
||||
static void build_event_channel(struct ast_config *cfg, const char *cat)
|
||||
{
|
||||
struct ast_variable *var;
|
||||
struct event_channel *event_channel;
|
||||
SaAisErrorT ais_res;
|
||||
SaNameT sa_name = { 0, };
|
||||
|
||||
AST_RWLIST_WRLOCK(&event_channels);
|
||||
AST_RWLIST_TRAVERSE(&event_channels, event_channel, entry) {
|
||||
if (!strcasecmp(event_channel->name, cat))
|
||||
break;
|
||||
}
|
||||
AST_RWLIST_UNLOCK(&event_channels);
|
||||
if (event_channel) {
|
||||
ast_log(LOG_WARNING, "Event channel '%s' was specified twice in "
|
||||
"configuration. Second instance ignored.\n", cat);
|
||||
return;
|
||||
}
|
||||
|
||||
if (!(event_channel = ast_calloc(1, sizeof(*event_channel) + strlen(cat))))
|
||||
return;
|
||||
|
||||
strcpy(event_channel->name, cat);
|
||||
ast_copy_string((char *) sa_name.value, cat, sizeof(sa_name.value));
|
||||
sa_name.length = strlen((char *) sa_name.value);
|
||||
ais_res = saEvtChannelOpen(evt_handle, &sa_name,
|
||||
SA_EVT_CHANNEL_PUBLISHER | SA_EVT_CHANNEL_SUBSCRIBER | SA_EVT_CHANNEL_CREATE,
|
||||
SA_TIME_MAX, &event_channel->handle);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error opening event channel: %s\n", ais_err2str(ais_res));
|
||||
free(event_channel);
|
||||
return;
|
||||
}
|
||||
|
||||
for (var = ast_variable_browse(cfg, cat); var; var = var->next) {
|
||||
if (!strcasecmp(var->name, "type")) {
|
||||
continue;
|
||||
} else if (!strcasecmp(var->name, "publish_event")) {
|
||||
add_publish_event(event_channel, var->value);
|
||||
} else if (!strcasecmp(var->name, "subscribe_event")) {
|
||||
add_subscribe_event(event_channel, var->value);
|
||||
} else {
|
||||
ast_log(LOG_WARNING, "Event channel '%s' contains invalid option '%s'\n",
|
||||
event_channel->name, var->name);
|
||||
}
|
||||
}
|
||||
|
||||
AST_RWLIST_WRLOCK(&event_channels);
|
||||
AST_RWLIST_INSERT_TAIL(&event_channels, event_channel, entry);
|
||||
AST_RWLIST_UNLOCK(&event_channels);
|
||||
}
|
||||
|
||||
static void load_config(void)
|
||||
{
|
||||
static const char filename[] = "ais.conf";
|
||||
struct ast_config *cfg;
|
||||
const char *cat = NULL;
|
||||
struct ast_flags config_flags = { 0 };
|
||||
|
||||
if (!(cfg = ast_config_load(filename, config_flags)) || cfg == CONFIG_STATUS_FILEINVALID)
|
||||
return;
|
||||
|
||||
while ((cat = ast_category_browse(cfg, cat))) {
|
||||
const char *type;
|
||||
|
||||
if (!strcasecmp(cat, "general"))
|
||||
continue;
|
||||
|
||||
if (!(type = ast_variable_retrieve(cfg, cat, "type"))) {
|
||||
ast_log(LOG_WARNING, "Invalid entry in %s defined with no type!\n",
|
||||
filename);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!strcasecmp(type, "event_channel")) {
|
||||
build_event_channel(cfg, cat);
|
||||
} else {
|
||||
ast_log(LOG_WARNING, "Entry in %s defined with invalid type '%s'\n",
|
||||
filename, type);
|
||||
}
|
||||
}
|
||||
|
||||
ast_config_destroy(cfg);
|
||||
}
|
||||
|
||||
static void publish_event_destroy(struct publish_event *publish_event)
|
||||
{
|
||||
ast_event_unsubscribe(publish_event->sub);
|
||||
|
||||
free(publish_event);
|
||||
}
|
||||
|
||||
static void subscribe_event_destroy(const struct event_channel *event_channel,
|
||||
struct subscribe_event *subscribe_event)
|
||||
{
|
||||
SaAisErrorT ais_res;
|
||||
|
||||
/* saEvtChannelClose() will actually do this automatically, but it just
|
||||
* feels cleaner to go ahead and do it manually ... */
|
||||
ais_res = saEvtEventUnsubscribe(event_channel->handle, subscribe_event->id);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error unsubscribing: %s\n", ais_err2str(ais_res));
|
||||
}
|
||||
|
||||
free(subscribe_event);
|
||||
}
|
||||
|
||||
static void event_channel_destroy(struct event_channel *event_channel)
|
||||
{
|
||||
struct publish_event *publish_event;
|
||||
struct subscribe_event *subscribe_event;
|
||||
SaAisErrorT ais_res;
|
||||
|
||||
while ((publish_event = AST_LIST_REMOVE_HEAD(&event_channel->publish_events, entry)))
|
||||
publish_event_destroy(publish_event);
|
||||
while ((subscribe_event = AST_LIST_REMOVE_HEAD(&event_channel->subscribe_events, entry)))
|
||||
subscribe_event_destroy(event_channel, subscribe_event);
|
||||
|
||||
ais_res = saEvtChannelClose(event_channel->handle);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Error closing event channel '%s': %s\n",
|
||||
event_channel->name, ais_err2str(ais_res));
|
||||
}
|
||||
|
||||
free(event_channel);
|
||||
}
|
||||
|
||||
static void destroy_event_channels(void)
|
||||
{
|
||||
struct event_channel *event_channel;
|
||||
|
||||
AST_RWLIST_WRLOCK(&event_channels);
|
||||
while ((event_channel = AST_RWLIST_REMOVE_HEAD(&event_channels, entry))) {
|
||||
event_channel_destroy(event_channel);
|
||||
}
|
||||
AST_RWLIST_UNLOCK(&event_channels);
|
||||
}
|
||||
|
||||
int ast_ais_evt_load_module(void)
|
||||
{
|
||||
evt_init_res = saEvtInitialize(&evt_handle, &evt_callbacks, &ais_version);
|
||||
if (evt_init_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Could not initialize eventing service: %s\n",
|
||||
ais_err2str(evt_init_res));
|
||||
return -1;
|
||||
}
|
||||
|
||||
load_config();
|
||||
|
||||
ast_cli_register_multiple(ais_cli, ARRAY_LEN(ais_cli));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int ast_ais_evt_unload_module(void)
|
||||
{
|
||||
SaAisErrorT ais_res;
|
||||
|
||||
if (evt_init_res != SA_AIS_OK) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
destroy_event_channels();
|
||||
|
||||
ais_res = saEvtFinalize(evt_handle);
|
||||
if (ais_res != SA_AIS_OK) {
|
||||
ast_log(LOG_ERROR, "Problem stopping eventing service: %s\n",
|
||||
ais_err2str(ais_res));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -0,0 +1,574 @@
|
||||
/*
|
||||
* Asterisk -- An open source telephony toolkit.
|
||||
*
|
||||
* Copyright (C) 2007, Digium, Inc.
|
||||
* Copyright (C) 2012, Russell Bryant
|
||||
*
|
||||
* Russell Bryant <russell@russellbryant.net>
|
||||
*
|
||||
* See http://www.asterisk.org for more information about
|
||||
* the Asterisk project. Please do not directly contact
|
||||
* any of the maintainers of this project for assistance;
|
||||
* the project provides a web site, mailing lists and IRC
|
||||
* channels for your use.
|
||||
*
|
||||
* This program is free software, distributed under the terms of
|
||||
* the GNU General Public License Version 2. See the LICENSE file
|
||||
* at the top of the source tree.
|
||||
*/
|
||||
|
||||
/*!
|
||||
* \file
|
||||
* \author Russell Bryant <russell@russellbryant.net>
|
||||
*
|
||||
* This module is based on and replaces the previous res_ais module.
|
||||
*/
|
||||
|
||||
/*** MODULEINFO
|
||||
<depend>corosync</depend>
|
||||
<support_level>extended</support_level>
|
||||
***/
|
||||
|
||||
#include "asterisk.h"
|
||||
|
||||
ASTERISK_FILE_VERSION(__FILE__, "$Revision$");
|
||||
|
||||
#include <corosync/cpg.h>
|
||||
#include <corosync/cfg.h>
|
||||
|
||||
#include "asterisk/module.h"
|
||||
#include "asterisk/logger.h"
|
||||
#include "asterisk/poll-compat.h"
|
||||
#include "asterisk/config.h"
|
||||
#include "asterisk/event.h"
|
||||
#include "asterisk/cli.h"
|
||||
#include "asterisk/devicestate.h"
|
||||
|
||||
AST_RWLOCK_DEFINE_STATIC(event_types_lock);
|
||||
|
||||
static struct {
|
||||
const char *name;
|
||||
struct ast_event_sub *sub;
|
||||
unsigned char publish;
|
||||
unsigned char subscribe;
|
||||
} event_types[] = {
|
||||
[AST_EVENT_MWI] = { .name = "mwi", },
|
||||
[AST_EVENT_DEVICE_STATE_CHANGE] = { .name = "device_state", },
|
||||
};
|
||||
|
||||
static struct {
|
||||
pthread_t id;
|
||||
int alert_pipe[2];
|
||||
unsigned int stop:1;
|
||||
} dispatch_thread = {
|
||||
.id = AST_PTHREADT_NULL,
|
||||
.alert_pipe = { -1, -1 },
|
||||
};
|
||||
|
||||
static cpg_handle_t cpg_handle;
|
||||
static corosync_cfg_handle_t cfg_handle;
|
||||
|
||||
static void cfg_state_track_cb(
|
||||
corosync_cfg_state_notification_buffer_t *notification_buffer,
|
||||
cs_error_t error);
|
||||
|
||||
static void cfg_shutdown_cb(corosync_cfg_handle_t cfg_handle,
|
||||
corosync_cfg_shutdown_flags_t flags);
|
||||
|
||||
static corosync_cfg_callbacks_t cfg_callbacks = {
|
||||
.corosync_cfg_state_track_callback = cfg_state_track_cb,
|
||||
.corosync_cfg_shutdown_callback = cfg_shutdown_cb,
|
||||
};
|
||||
|
||||
static void cpg_deliver_cb(cpg_handle_t handle, const struct cpg_name *group_name,
|
||||
uint32_t nodeid, uint32_t pid, void *msg, size_t msg_len);
|
||||
|
||||
static void cpg_confchg_cb(cpg_handle_t handle, const struct cpg_name *group_name,
|
||||
const struct cpg_address *member_list, size_t member_list_entries,
|
||||
const struct cpg_address *left_list, size_t left_list_entries,
|
||||
const struct cpg_address *joined_list, size_t joined_list_entries);
|
||||
|
||||
static cpg_callbacks_t cpg_callbacks = {
|
||||
.cpg_deliver_fn = cpg_deliver_cb,
|
||||
.cpg_confchg_fn = cpg_confchg_cb,
|
||||
};
|
||||
|
||||
static void ast_event_cb(const struct ast_event *event, void *data);
|
||||
|
||||
static void cfg_state_track_cb(
|
||||
corosync_cfg_state_notification_buffer_t *notification_buffer,
|
||||
cs_error_t error)
|
||||
{
|
||||
}
|
||||
|
||||
static void cfg_shutdown_cb(corosync_cfg_handle_t cfg_handle,
|
||||
corosync_cfg_shutdown_flags_t flags)
|
||||
{
|
||||
}
|
||||
|
||||
static void cpg_deliver_cb(cpg_handle_t handle, const struct cpg_name *group_name,
|
||||
uint32_t nodeid, uint32_t pid, void *msg, size_t msg_len)
|
||||
{
|
||||
struct ast_event *event;
|
||||
|
||||
if (msg_len < ast_event_minimum_length()) {
|
||||
ast_debug(1, "Ignoring event that's too small. %u < %u\n",
|
||||
(unsigned int) msg_len,
|
||||
(unsigned int) ast_event_minimum_length());
|
||||
return;
|
||||
}
|
||||
|
||||
if (!ast_eid_cmp(&ast_eid_default, ast_event_get_ie_raw(msg, AST_EVENT_IE_EID))) {
|
||||
/* Don't feed events back in that originated locally. */
|
||||
return;
|
||||
}
|
||||
|
||||
ast_rwlock_rdlock(&event_types_lock);
|
||||
if (!event_types[ast_event_get_type(msg)].subscribe) {
|
||||
/* We are not configured to subscribe to these events. */
|
||||
ast_rwlock_unlock(&event_types_lock);
|
||||
return;
|
||||
}
|
||||
ast_rwlock_unlock(&event_types_lock);
|
||||
|
||||
if (!(event = ast_malloc(msg_len))) {
|
||||
return;
|
||||
}
|
||||
|
||||
memcpy(event, msg, msg_len);
|
||||
|
||||
ast_event_queue_and_cache(event);
|
||||
}
|
||||
|
||||
static void cpg_confchg_cb(cpg_handle_t handle, const struct cpg_name *group_name,
|
||||
const struct cpg_address *member_list, size_t member_list_entries,
|
||||
const struct cpg_address *left_list, size_t left_list_entries,
|
||||
const struct cpg_address *joined_list, size_t joined_list_entries)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
/* If any new nodes have joined, dump our cache of events we are publishing
|
||||
* that originated from this server. */
|
||||
|
||||
if (!joined_list_entries) {
|
||||
return;
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(event_types); i++) {
|
||||
struct ast_event_sub *event_sub;
|
||||
|
||||
ast_rwlock_rdlock(&event_types_lock);
|
||||
if (!event_types[i].publish) {
|
||||
ast_rwlock_unlock(&event_types_lock);
|
||||
continue;
|
||||
}
|
||||
ast_rwlock_unlock(&event_types_lock);
|
||||
|
||||
event_sub = ast_event_subscribe_new(i, ast_event_cb, NULL);
|
||||
ast_event_sub_append_ie_raw(event_sub, AST_EVENT_IE_EID,
|
||||
&ast_eid_default, sizeof(ast_eid_default));
|
||||
ast_event_dump_cache(event_sub);
|
||||
ast_event_sub_destroy(event_sub);
|
||||
}
|
||||
}
|
||||
|
||||
static void *dispatch_thread_handler(void *data)
|
||||
{
|
||||
cs_error_t cs_err;
|
||||
struct pollfd pfd[3] = {
|
||||
{ .events = POLLIN, },
|
||||
{ .events = POLLIN, },
|
||||
{ .events = POLLIN, },
|
||||
};
|
||||
|
||||
if ((cs_err = cpg_fd_get(cpg_handle, &pfd[0].fd)) != CS_OK) {
|
||||
ast_log(LOG_ERROR, "Failed to get CPG fd. This module is now broken.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if ((cs_err = corosync_cfg_fd_get(cfg_handle, &pfd[1].fd)) != CS_OK) {
|
||||
ast_log(LOG_ERROR, "Failed to get CFG fd. This module is now broken.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
pfd[2].fd = dispatch_thread.alert_pipe[0];
|
||||
|
||||
while (!dispatch_thread.stop) {
|
||||
int res;
|
||||
|
||||
pfd[0].revents = 0;
|
||||
pfd[1].revents = 0;
|
||||
pfd[2].revents = 0;
|
||||
|
||||
res = ast_poll(pfd, ARRAY_LEN(pfd), -1);
|
||||
if (res == -1 && errno != EINTR && errno != EAGAIN) {
|
||||
ast_log(LOG_ERROR, "poll() error: %s (%d)\n", strerror(errno), errno);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (pfd[0].revents & POLLIN) {
|
||||
if ((cs_err = cpg_dispatch(cpg_handle, CS_DISPATCH_ALL)) != CS_OK) {
|
||||
ast_log(LOG_WARNING, "Failed CPG dispatch: %d\n", cs_err);
|
||||
}
|
||||
}
|
||||
|
||||
if (pfd[1].revents & POLLIN) {
|
||||
if ((cs_err = corosync_cfg_dispatch(cfg_handle, CS_DISPATCH_ALL)) != CS_OK) {
|
||||
ast_log(LOG_WARNING, "Failed CFG dispatch: %d\n", cs_err);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void ast_event_cb(const struct ast_event *event, void *data)
|
||||
{
|
||||
cs_error_t cs_err;
|
||||
struct iovec iov = {
|
||||
.iov_base = (void *) event,
|
||||
.iov_len = ast_event_get_size(event),
|
||||
};
|
||||
|
||||
if (ast_eid_cmp(&ast_eid_default,
|
||||
ast_event_get_ie_raw(event, AST_EVENT_IE_EID))) {
|
||||
/* If the event didn't originate from this server, don't send it back out. */
|
||||
return;
|
||||
}
|
||||
|
||||
/* The ast_event subscription will only exist if we are configured to publish
|
||||
* these events, so just send away. */
|
||||
|
||||
if ((cs_err = cpg_mcast_joined(cpg_handle, CPG_TYPE_FIFO, &iov, 1)) != CS_OK) {
|
||||
ast_log(LOG_WARNING, "CPG mcast failed (%d)\n", cs_err);
|
||||
}
|
||||
}
|
||||
|
||||
static char *corosync_show_members(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
||||
{
|
||||
cs_error_t cs_err;
|
||||
struct cpg_name name;
|
||||
struct cpg_address member_list[CPG_MEMBERS_MAX] = { { 0, }, };
|
||||
int num_members = CPG_MEMBERS_MAX;
|
||||
unsigned int i;
|
||||
|
||||
switch (cmd) {
|
||||
case CLI_INIT:
|
||||
e->command = "corosync show members";
|
||||
e->usage =
|
||||
"Usage: corosync show members\n"
|
||||
" Show corosync cluster members\n";
|
||||
return NULL;
|
||||
|
||||
case CLI_GENERATE:
|
||||
return NULL; /* no completion */
|
||||
}
|
||||
|
||||
if (a->argc != e->args) {
|
||||
return CLI_SHOWUSAGE;
|
||||
}
|
||||
|
||||
ast_copy_string(name.value, "asterisk", sizeof(name.value));
|
||||
name.length = strlen(name.value);
|
||||
|
||||
cs_err = cpg_membership_get(cpg_handle, &name, member_list, &num_members);
|
||||
|
||||
if (cs_err != CS_OK) {
|
||||
ast_cli(a->fd, "Failed to get membership list\n");
|
||||
return CLI_FAILURE;
|
||||
}
|
||||
|
||||
ast_cli(a->fd, "\n"
|
||||
"=============================================================\n"
|
||||
"=== Cluster members =========================================\n"
|
||||
"=============================================================\n"
|
||||
"===\n"
|
||||
"=== Number of members: %d\n"
|
||||
"===\n", num_members);
|
||||
|
||||
for (i = 0; i < num_members; i++) {
|
||||
corosync_cfg_node_address_t addrs[8];
|
||||
int num_addrs = 0;
|
||||
unsigned int j;
|
||||
|
||||
cs_err = corosync_cfg_get_node_addrs(cfg_handle, member_list[i].nodeid,
|
||||
ARRAY_LEN(addrs), &num_addrs, addrs);
|
||||
if (cs_err != CS_OK) {
|
||||
ast_log(LOG_WARNING, "Failed to get node addresses\n");
|
||||
continue;
|
||||
}
|
||||
|
||||
ast_cli(a->fd, "=== Node %d\n", i + 1);
|
||||
|
||||
for (j = 0; j < num_addrs; j++) {
|
||||
struct sockaddr *sa = (struct sockaddr *) addrs[j].address;
|
||||
size_t sa_len = (size_t) addrs[j].address_length;
|
||||
char buf[128];
|
||||
|
||||
getnameinfo(sa, sa_len, buf, sizeof(buf), NULL, 0, NI_NUMERICHOST);
|
||||
|
||||
ast_cli(a->fd, "=== --> Address %d: %s\n", j + 1, buf);
|
||||
}
|
||||
}
|
||||
|
||||
ast_cli(a->fd, "===\n"
|
||||
"=============================================================\n"
|
||||
"\n");
|
||||
|
||||
return CLI_SUCCESS;
|
||||
}
|
||||
|
||||
static char *corosync_show_config(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
switch (cmd) {
|
||||
case CLI_INIT:
|
||||
e->command = "corosync show config";
|
||||
e->usage =
|
||||
"Usage: corosync show config\n"
|
||||
" Show configuration loaded from res_corosync.conf\n";
|
||||
return NULL;
|
||||
|
||||
case CLI_GENERATE:
|
||||
return NULL; /* no completion */
|
||||
}
|
||||
|
||||
if (a->argc != e->args) {
|
||||
return CLI_SHOWUSAGE;
|
||||
}
|
||||
|
||||
ast_cli(a->fd, "\n"
|
||||
"=============================================================\n"
|
||||
"=== res_corosync config =====================================\n"
|
||||
"=============================================================\n"
|
||||
"===\n");
|
||||
|
||||
ast_rwlock_rdlock(&event_types_lock);
|
||||
for (i = 0; i < ARRAY_LEN(event_types); i++) {
|
||||
if (event_types[i].publish) {
|
||||
ast_cli(a->fd, "=== ==> Publishing Event Type: %s\n",
|
||||
event_types[i].name);
|
||||
}
|
||||
if (event_types[i].subscribe) {
|
||||
ast_cli(a->fd, "=== ==> Subscribing to Event Type: %s\n",
|
||||
event_types[i].name);
|
||||
}
|
||||
}
|
||||
ast_rwlock_unlock(&event_types_lock);
|
||||
|
||||
ast_cli(a->fd, "===\n"
|
||||
"=============================================================\n"
|
||||
"\n");
|
||||
|
||||
return CLI_SUCCESS;
|
||||
}
|
||||
|
||||
static struct ast_cli_entry corosync_cli[] = {
|
||||
AST_CLI_DEFINE(corosync_show_config, "Show configuration"),
|
||||
AST_CLI_DEFINE(corosync_show_members, "Show cluster members"),
|
||||
};
|
||||
|
||||
enum {
|
||||
PUBLISH,
|
||||
SUBSCRIBE,
|
||||
};
|
||||
|
||||
static int set_event(const char *event_type, int pubsub)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(event_types); i++) {
|
||||
if (!event_types[i].name || strcasecmp(event_type, event_types[i].name)) {
|
||||
continue;
|
||||
}
|
||||
|
||||
switch (pubsub) {
|
||||
case PUBLISH:
|
||||
event_types[i].publish = 1;
|
||||
break;
|
||||
case SUBSCRIBE:
|
||||
event_types[i].subscribe = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
return (i == ARRAY_LEN(event_types)) ? -1 : 0;
|
||||
}
|
||||
|
||||
static int load_general_config(struct ast_config *cfg)
|
||||
{
|
||||
struct ast_variable *v;
|
||||
int res = 0;
|
||||
unsigned int i;
|
||||
|
||||
ast_rwlock_wrlock(&event_types_lock);
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(event_types); i++) {
|
||||
event_types[i].publish = 0;
|
||||
event_types[i].subscribe = 0;
|
||||
}
|
||||
|
||||
for (v = ast_variable_browse(cfg, "general"); v && !res; v = v->next) {
|
||||
if (!strcasecmp(v->name, "publish_event")) {
|
||||
res = set_event(v->value, PUBLISH);
|
||||
} else if (!strcasecmp(v->name, "subscribe_event")) {
|
||||
res = set_event(v->value, SUBSCRIBE);
|
||||
} else {
|
||||
ast_log(LOG_WARNING, "Unknown option '%s'\n", v->name);
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(event_types); i++) {
|
||||
if (event_types[i].publish && !event_types[i].sub) {
|
||||
event_types[i].sub = ast_event_subscribe(i,
|
||||
ast_event_cb, "Corosync", NULL,
|
||||
AST_EVENT_IE_END);
|
||||
} else if (!event_types[i].publish && event_types[i].sub) {
|
||||
event_types[i].sub = ast_event_unsubscribe(event_types[i].sub);
|
||||
}
|
||||
}
|
||||
|
||||
ast_rwlock_unlock(&event_types_lock);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static int load_config(unsigned int reload)
|
||||
{
|
||||
static const char filename[] = "res_corosync.conf";
|
||||
struct ast_config *cfg;
|
||||
const char *cat = NULL;
|
||||
struct ast_flags config_flags = { 0 };
|
||||
int res = 0;
|
||||
|
||||
cfg = ast_config_load(filename, config_flags);
|
||||
|
||||
if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEINVALID) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
while ((cat = ast_category_browse(cfg, cat))) {
|
||||
if (!strcasecmp(cat, "general")) {
|
||||
res = load_general_config(cfg);
|
||||
} else {
|
||||
ast_log(LOG_WARNING, "Unknown configuration section '%s'\n", cat);
|
||||
}
|
||||
}
|
||||
|
||||
ast_config_destroy(cfg);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static void cleanup_module(void)
|
||||
{
|
||||
cs_error_t cs_err;
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < ARRAY_LEN(event_types); i++) {
|
||||
if (event_types[i].sub) {
|
||||
event_types[i].sub = ast_event_unsubscribe(event_types[i].sub);
|
||||
}
|
||||
event_types[i].publish = 0;
|
||||
event_types[i].subscribe = 0;
|
||||
}
|
||||
|
||||
if (dispatch_thread.id != AST_PTHREADT_NULL) {
|
||||
char meepmeep = 'x';
|
||||
dispatch_thread.stop = 1;
|
||||
if (ast_carefulwrite(dispatch_thread.alert_pipe[1], &meepmeep, 1,
|
||||
5000) == -1) {
|
||||
ast_log(LOG_ERROR, "Failed to write to pipe: %s (%d)\n",
|
||||
strerror(errno), errno);
|
||||
}
|
||||
pthread_join(dispatch_thread.id, NULL);
|
||||
}
|
||||
|
||||
if (dispatch_thread.alert_pipe[0] != -1) {
|
||||
close(dispatch_thread.alert_pipe[0]);
|
||||
dispatch_thread.alert_pipe[0] = -1;
|
||||
}
|
||||
|
||||
if (dispatch_thread.alert_pipe[1] != -1) {
|
||||
close(dispatch_thread.alert_pipe[1]);
|
||||
dispatch_thread.alert_pipe[1] = -1;
|
||||
}
|
||||
|
||||
if (cpg_handle && (cs_err = cpg_finalize(cpg_handle) != CS_OK)) {
|
||||
ast_log(LOG_ERROR, "Failed to finalize cpg (%d)\n", (int) cs_err);
|
||||
}
|
||||
cpg_handle = 0;
|
||||
|
||||
if (cfg_handle && (cs_err = corosync_cfg_finalize(cfg_handle) != CS_OK)) {
|
||||
ast_log(LOG_ERROR, "Failed to finalize cfg (%d)\n", (int) cs_err);
|
||||
}
|
||||
cfg_handle = 0;
|
||||
}
|
||||
|
||||
static int load_module(void)
|
||||
{
|
||||
cs_error_t cs_err;
|
||||
enum ast_module_load_result res = AST_MODULE_LOAD_FAILURE;
|
||||
struct cpg_name name;
|
||||
|
||||
if ((cs_err = corosync_cfg_initialize(&cfg_handle, &cfg_callbacks) != CS_OK)) {
|
||||
ast_log(LOG_ERROR, "Failed to initialize cfg (%d)\n", (int) cs_err);
|
||||
return AST_MODULE_LOAD_DECLINE;
|
||||
}
|
||||
|
||||
if ((cs_err = cpg_initialize(&cpg_handle, &cpg_callbacks) != CS_OK)) {
|
||||
ast_log(LOG_ERROR, "Failed to initialize cpg (%d)\n", (int) cs_err);
|
||||
goto failed;
|
||||
}
|
||||
|
||||
ast_copy_string(name.value, "asterisk", sizeof(name.value));
|
||||
name.length = strlen(name.value);
|
||||
|
||||
if ((cs_err = cpg_join(cpg_handle, &name)) != CS_OK) {
|
||||
ast_log(LOG_ERROR, "Failed to join (%d)\n", (int) cs_err);
|
||||
goto failed;
|
||||
}
|
||||
|
||||
if (pipe(dispatch_thread.alert_pipe) == -1) {
|
||||
ast_log(LOG_ERROR, "Failed to create alert pipe: %s (%d)\n",
|
||||
strerror(errno), errno);
|
||||
goto failed;
|
||||
}
|
||||
|
||||
if (ast_pthread_create_background(&dispatch_thread.id, NULL,
|
||||
dispatch_thread_handler, NULL)) {
|
||||
ast_log(LOG_ERROR, "Error starting CPG dispatch thread.\n");
|
||||
goto failed;
|
||||
}
|
||||
|
||||
if (load_config(0)) {
|
||||
/* simply not configured is not a fatal error */
|
||||
res = AST_MODULE_LOAD_DECLINE;
|
||||
goto failed;
|
||||
}
|
||||
|
||||
ast_cli_register_multiple(corosync_cli, ARRAY_LEN(corosync_cli));
|
||||
|
||||
ast_enable_distributed_devstate();
|
||||
|
||||
return AST_MODULE_LOAD_SUCCESS;
|
||||
|
||||
failed:
|
||||
cleanup_module();
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static int unload_module(void)
|
||||
{
|
||||
ast_cli_unregister_multiple(corosync_cli, ARRAY_LEN(corosync_cli));
|
||||
|
||||
cleanup_module();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Corosync");
|
||||
Loading…
Reference in new issue