Big agent / queue fixes

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4231 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_queue.c

@@ -303,6 +303,79 @@ static int has_no_members(struct ast_call_queue *q)
 	return empty;
 }
 
+struct statechange {
+	int state;
+	char dev[0];
+};
+
+static void *changethread(void *data)
+{
+	struct ast_call_queue *q;
+	struct statechange *sc = data;
+	struct member *cur;
+	char *loc;
+	loc = strchr(sc->dev, '/');
+	if (loc) {
+		*loc = '\0';
+		loc++;
+	} else {
+		ast_log(LOG_WARNING, "Can't change device with no technology!\n");
+		free(sc);
+		return NULL;
+	}
+	if (option_debug)
+		ast_log(LOG_DEBUG, "Device '%s/%s' changed to state '%d'\n", sc->dev, loc, sc->state);
+	ast_mutex_lock(&qlock);
+	for (q = queues; q; q = q->next) {
+		ast_mutex_lock(&q->lock);
+		cur = q->members;
+		while(cur) {
+			if (!strcasecmp(sc->dev, cur->tech) && !strcmp(loc, cur->loc)) {
+				if (cur->status != sc->state) {
+					cur->status = sc->state;
+					manager_event(EVENT_FLAG_AGENT, "QueueMemberStatus",
+						"Queue: %s\r\n"
+						"Location: %s/%s\r\n"
+						"Membership: %s\r\n"
+						"Penalty: %d\r\n"
+						"CallsTaken: %d\r\n"
+						"LastCall: %ld\r\n"
+						"Status: %d\r\n",
+					q->name, cur->tech, cur->loc, cur->dynamic ? "dynamic" : "static",
+					cur->penalty, cur->calls, cur->lastcall, cur->status);
+				}
+			}
+			cur = cur->next;
+		}
+		ast_mutex_unlock(&q->lock);
+	}
+	ast_mutex_unlock(&qlock);
+	ast_log(LOG_DEBUG, "Device '%s/%s' changed to state '%d'\n", sc->dev, loc, sc->state);
+	free(sc);
+	return NULL;
+}
+
+static int statechange_queue(const char *dev, int state, void *ign)
+{
+	/* Avoid potential for deadlocks by spawning a new thread to handle
+	   the event */
+	struct statechange *sc;
+	pthread_t t;
+	pthread_attr_t attr;
+	sc = malloc(sizeof(struct statechange) + strlen(dev) + 1);
+	if (sc) {
+		sc->state = state;
+		strcpy(sc->dev, dev);
+		pthread_attr_init(&attr);
+		pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+		if (ast_pthread_create(&t, &attr, changethread, sc)) {
+			ast_log(LOG_WARNING, "Failed to create update thread!\n");
+			free(sc);
+		}
+	}
+	return 0;
+}
+
 static int join_queue(char *queuename, struct queue_ent *qe)
 {
 	struct ast_call_queue *q;
@@ -316,7 +389,7 @@ static int join_queue(char *queuename, struct queue_ent *qe)
 		if (!strcasecmp(q->name, queuename)) {
 			/* This is our one */
 			ast_mutex_lock(&q->lock);
-			if ((!has_no_members(q) || q->joinempty || !q->head) && (!q->maxlen || (q->count < q->maxlen))) {
+			if ((!has_no_members(q) || q->joinempty) && (!q->maxlen || (q->count < q->maxlen))) {
 				/* There's space for us, put us at the right position inside
 				 * the queue. 
 				 * Take into account the priority of the calling user */
@@ -591,8 +664,7 @@ static int update_status(struct ast_call_queue *q, struct member *member, int st
 				"Penalty: %d\r\n"
 				"CallsTaken: %d\r\n"
 				"LastCall: %ld\r\n"
-				"Status: %d\r\n"
-				"\r\n",
+				"Status: %d\r\n",
 					q->name, cur->tech, cur->loc, cur->dynamic ? "dynamic" : "static",
 					cur->penalty, cur->calls, cur->lastcall, cur->status);
 			break;
@@ -604,6 +676,19 @@ static int update_status(struct ast_call_queue *q, struct member *member, int st
 	return 0;
 }
 
+static int update_dial_status(struct ast_call_queue *q, struct member *member, int status)
+{
+	if (status == AST_CAUSE_BUSY)
+		status = AST_DEVICE_BUSY;
+	else if (status == AST_CAUSE_UNREGISTERED)
+		status = AST_DEVICE_UNAVAILABLE;
+	else if (status == AST_CAUSE_NOSUCHDRIVER)
+		status = AST_DEVICE_INVALID;
+	else
+		status = AST_DEVICE_UNKNOWN;
+	return update_status(q, member, status);
+}
+
 static int ring_entry(struct queue_ent *qe, struct localuser *tmp)
 {
 	int res;
@@ -624,10 +709,10 @@ static int ring_entry(struct queue_ent *qe, struct localuser *tmp)
 		if (qe->chan->cdr)
 			ast_cdr_busy(qe->chan->cdr);
 		tmp->stillgoing = 0;
-		update_status(qe->parent, tmp->member, status);
+		update_dial_status(qe->parent, tmp->member, status);
 		return 0;
 	} else if (status != tmp->oldstatus) 
-		update_status(qe->parent, tmp->member, status);
+		update_dial_status(qe->parent, tmp->member, status);
 	
 	tmp->chan->appl = "AppQueue";
 	tmp->chan->data = "(Outgoing Line)";
@@ -855,7 +940,7 @@ static struct localuser *wait_for_answer(struct queue_ent *qe, struct localuser
 					/* Setup parameters */
 					o->chan = ast_request(tech, in->nativeformats, stuff, &status);
 					if (status != o->oldstatus) 
-						update_status(qe->parent, o->member, status);						
+						update_dial_status(qe->parent, o->member, status);						
 					if (!o->chan) {
 						ast_log(LOG_NOTICE, "Unable to create local channel for call forward to '%s/%s'\n", tech, stuff);
 						o->stillgoing = 0;
@@ -2095,8 +2180,16 @@ static void reload_queues(void)
 				free(q);
 			} else
 				ast_log(LOG_WARNING, "XXX Leaking a little memory :( XXX\n");
-		} else
+		} else {
+			char tmp[256];
+			cur = q->members;
+			while(cur) {
+				snprintf(tmp, sizeof(tmp), "%s/%s", cur->tech, cur->loc);
+				cur->status = ast_device_state(tmp);
+				cur = cur->next;
+			}
 			ql = q;
+		}
 		q = qn;
 	}
 	ast_mutex_unlock(&qlock);
@@ -2105,20 +2198,23 @@ static void reload_queues(void)
 static char *status2str(int status, char *buf, int buflen)
 {
 	switch(status) {
-	case AST_CAUSE_BUSY:
-		strncpy(buf, "busy", buflen - 1);
+	case AST_DEVICE_UNKNOWN:
+		strncpy(buf, "unknown", buflen - 1);
 		break;
-	case AST_CAUSE_CONGESTION:
-		strncpy(buf, "congestion", buflen - 1);
+	case AST_DEVICE_NOT_INUSE:
+		strncpy(buf, "notinuse", buflen - 1);
 		break;
-	case AST_CAUSE_FAILURE:
-		strncpy(buf, "failure", buflen - 1);
+	case AST_DEVICE_INUSE:
+		strncpy(buf, "inuse", buflen - 1);
+		break;
+	case AST_DEVICE_BUSY:
+		strncpy(buf, "busy", buflen - 1);
 		break;
-	case AST_CAUSE_UNREGISTERED:
-		strncpy(buf, "unregistered", buflen - 1);
+	case AST_DEVICE_INVALID:
+		strncpy(buf, "invalid", buflen - 1);
 		break;
-	case AST_CAUSE_NOSUCHDRIVER:
-		strncpy(buf, "nosuchdriver", buflen - 1);
+	case AST_DEVICE_UNAVAILABLE:
+		strncpy(buf, "unavailable", buflen - 1);
 		break;
 	default:
 		snprintf(buf, buflen, "unknown status %d", status);
@@ -2593,6 +2689,7 @@ int unload_module(void)
 	ast_manager_unregister("QueueStatus");
 	ast_manager_unregister("QueueAdd");
 	ast_manager_unregister("QueueRemove");
+	ast_devstate_del(statechange_queue, NULL);
 	ast_unregister_application(app_aqm);
 	ast_unregister_application(app_rqm);
 	return ast_unregister_application(app);
@@ -2607,6 +2704,7 @@ int load_module(void)
 		ast_cli_register(&cli_show_queues);
 		ast_cli_register(&cli_add_queue_member);
 		ast_cli_register(&cli_remove_queue_member);
+		ast_devstate_add(statechange_queue, NULL);
 		ast_manager_register( "Queues", 0, manager_queues_show, "Queues" );
 		ast_manager_register( "QueueStatus", 0, manager_queues_status, "Queue Status" );
 		ast_manager_register( "QueueAdd", EVENT_FLAG_AGENT, manager_add_queue_member, "Add interface to queue." );

channels/chan_agent.c

@@ -591,6 +591,7 @@ static int agent_hangup(struct ast_channel *ast)
 				snprintf(agent, sizeof(agent), "Agent/%s", p->agent);
 				ast_queue_log("NONE", ast->uniqueid, agent, "AGENTCALLBACKLOGOFF", "%s|%ld|%s", p->loginchan, logintime, "Autologoff");
 				p->loginchan[0] = '\0';
+			    ast_device_state_changed("Agent/%s", p->agent);
 			}
 		} else if (p->dead) {
 			ast_mutex_lock(&p->chan->lock);
@@ -1479,6 +1480,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
 								ast_queue_log("NONE", chan->uniqueid, agent, "AGENTCALLBACKLOGIN", "%s", p->loginchan);
 								if (option_verbose > 2)
 									ast_verbose(VERBOSE_PREFIX_3 "Callback Agent '%s' logged in on %s\n", p->agent, p->loginchan);
+							    ast_device_state_changed("Agent/%s", p->agent);
 							} else {
 								logintime = time(NULL) - p->loginstart;
 								p->loginstart = 0;
@@ -1491,6 +1493,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
 								ast_queue_log("NONE", chan->uniqueid, agent, "AGENTCALLBACKLOGOFF", "%s|%ld|", last_loginchan, logintime);
 								if (option_verbose > 2)
 									ast_verbose(VERBOSE_PREFIX_3 "Callback Agent '%s' logged out\n", p->agent);
+							    ast_device_state_changed("Agent/%s", p->agent);
 							}
 							ast_mutex_unlock(&agentlock);
 							if (!res)
@@ -1525,6 +1528,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
 								check_availability(p, 0);
 							ast_mutex_unlock(&p->lock);
 							ast_mutex_unlock(&agentlock);
+						    ast_device_state_changed("Agent/%s", p->agent);
 							while (res >= 0) {
 								ast_mutex_lock(&p->lock);
 								if (p->chan != chan)
@@ -1591,6 +1595,7 @@ static int __login_exec(struct ast_channel *chan, void *data, int callbackmode)
 							if (option_verbose > 2)
 								ast_verbose(VERBOSE_PREFIX_3 "Agent '%s' logged out\n", p->agent);
 							/* If there is no owner, go ahead and kill it now */
+						    ast_device_state_changed("Agent/%s", p->agent);
 							if (p->dead && !p->owner) {
 								ast_mutex_destroy(&p->lock);
 								ast_mutex_destroy(&p->app_lock);
@@ -1745,7 +1750,6 @@ static int agent_devicestate(void *data)
 	while(p) {
 		ast_mutex_lock(&p->lock);
 		if (!p->pending && ((groupmatch && (p->group & groupmatch)) || !strcmp(data, p->agent))) {
-				res = AST_DEVICE_UNKNOWN;
 			if (p->owner) {
 				if (res != AST_DEVICE_INUSE)
 					res = AST_DEVICE_BUSY;

include/asterisk/pbx.h

@@ -51,6 +51,8 @@ struct ast_sw;
 
 typedef int (*ast_state_cb_type)(char *context, char* id, int state, void *data);
 
+typedef int (*ast_devstate_cb_type)(const char *dev, int state, void *data);
+
 //! Data structure associated with an asterisk switch
 struct ast_switch {
 	/*! NULL */
@@ -262,6 +264,15 @@ int ast_device_state_changed(const char *fmt, ...)
 int ast_extension_state_add(const char *context, const char *exten, 
 			    ast_state_cb_type callback, void *data);
 
+//! Registers a device state change callback
+/*!
+ * \param data to pass to callback
+ * The callback is called if the state for extension is changed
+ * Return -1 on failure, ID on success
+ */ 
+int ast_devstate_add(ast_devstate_cb_type callback, void *data);
+void ast_devstate_del(ast_devstate_cb_type callback, void *data);
+
 //! Deletes a registered state change callback by ID
 /*!
  * \param id of the callback to delete

loader.c

@@ -408,6 +408,14 @@ static int ast_resource_exists(char *resource)
 		return 0;
 }
 
+static const char *loadorder[] =
+{
+	"res_",
+	"chan_",
+	"pbx_",
+	NULL,
+};
+
 int load_modules()
 {
 	struct ast_config *cfg;
@@ -442,13 +450,14 @@ int load_modules()
 		DIR *mods;
 		struct dirent *d;
 		int x;
-		/* Make two passes.  First, load any resource modules, then load the others. */
-		for (x=0;x<2;x++) {
+		/* Loop through each order */
+		for (x=0;x<sizeof(loadorder) / sizeof(loadorder[0]);x++) {
 			mods = opendir((char *)ast_config_AST_MODULE_DIR);
 			if (mods) {
 				while((d = readdir(mods))) {
 					/* Must end in .so to load it.  */
-					if ((strlen(d->d_name) > 3) && (x || !strncasecmp(d->d_name, "res_", 4)) && 
+					if ((strlen(d->d_name) > 3) && 
+					    (!loadorder[x] || !strncasecmp(d->d_name, loadorder[x], strlen(loadorder[x]))) && 
 					    !strcasecmp(d->d_name + strlen(d->d_name) - 3, ".so") &&
 						!ast_resource_exists(d->d_name)) {
 						/* It's a shared library -- Just be sure we're allowed to load it -- kinda

pbx.c

@@ -135,6 +135,15 @@ struct ast_state_cb {
     struct ast_state_cb *next;
 };
 	    
+/* ast_state_cb: An extension state notify */
+struct ast_devstate_cb {
+    void *data;
+    ast_devstate_cb_type callback;
+    struct ast_devstate_cb *next;
+};
+
+static struct ast_devstate_cb *devcbs;
+
 struct ast_hint {
     struct ast_exten *exten;
     int laststate; 
@@ -1445,6 +1454,7 @@ int ast_device_state_changed(const char *fmt, ...)
 {
 	struct ast_hint *list;
 	struct ast_state_cb *cblist;
+	struct ast_devstate_cb *devcb;
 	char hint[AST_MAX_EXTENSION] = "";
 	char device[AST_MAX_EXTENSION];
 	char *cur, *rest;
@@ -1461,8 +1471,16 @@ int ast_device_state_changed(const char *fmt, ...)
 		*rest = 0;
 	}
 
+	state = ast_device_state(device);
+
 	ast_mutex_lock(&hintlock);
 
+	devcb = devcbs;
+	while(devcb) {
+		if (devcb->callback)
+			devcb->callback(device, state, devcb->data);
+		devcb = devcb->next;
+	}
 	list = hints;
 
 	while (list) {
@@ -1506,6 +1524,42 @@ int ast_device_state_changed(const char *fmt, ...)
 	return 1;
 }
 			
+int ast_devstate_add(ast_devstate_cb_type callback, void *data)
+{
+	struct ast_devstate_cb *devcb;
+	devcb = malloc(sizeof(struct ast_devstate_cb));
+	if (devcb) {
+		memset(devcb, 0, sizeof(struct ast_devstate_cb));
+		ast_mutex_lock(&hintlock);
+		devcb->data = data;
+		devcb->callback = callback;
+		devcb->next = devcbs;
+		devcbs = devcb;
+		ast_mutex_unlock(&hintlock);
+	}
+	return 0;
+}
+
+void ast_devstate_del(ast_devstate_cb_type callback, void *data)
+{
+	struct ast_devstate_cb *devcb, *prev = NULL, *next;
+	ast_mutex_lock(&hintlock);
+	devcb = devcbs;
+	while(devcb) {
+		next = devcb->next;
+		if ((devcb->data == data) && (devcb->callback == callback)) {
+			if (prev)
+				prev->next = next;
+			else
+				devcbs = next;
+			free(devcb);
+		} else
+			prev = devcb;
+		devcb = next;
+	}
+	ast_mutex_unlock(&hintlock);
+}
+
 int ast_extension_state_add(const char *context, const char *exten, 
 			    ast_state_cb_type callback, void *data)
 {