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Create concept of a "pending agent", so you can have agents access pending calls 

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1145 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer 2003-07-01 16:16:28 +00:00
parent 65ed20b4f4
commit 16b14c8945
3 changed files with 216 additions and 57 deletions
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255
channels/chan_agent.c
View File

@ -78,6 +78,7 @@ static pthread_mutex_t agentlock = AST_MUTEX_INITIALIZER;
static struct agent_pvt {
pthread_mutex_t lock; /* Channel private lock */
int dead; /* Poised for destruction? */
int pending; /* Not a real agent -- just pending a match */
unsigned int group; /* Group memberships */
char moh[80]; /* Which music on hold */
char agent[AST_MAX_AGENT]; /* Agent ID */
@ -100,13 +101,31 @@ static struct agent_pvt {
} while(0)
static int add_agent(struct ast_variable *var)
static void agent_unlink(struct agent_pvt *agent)
{
struct agent_pvt *p, *prev;
prev = NULL;
p = agents;
while(p) {
if (p == agent) {
if (prev)
prev->next = agent->next;
else
agents = agent->next;
break;
}
prev = p;
p = p->next;
}
}
static struct agent_pvt *add_agent(char *agent, int pending)
{
char tmp[256];
char *password=NULL, *name=NULL;
struct agent_pvt *p;
struct agent_pvt *p, *prev;
strncpy(tmp, var->value, sizeof(tmp));
strncpy(tmp, agent, sizeof(tmp));
if ((password = strchr(tmp, ','))) {
*password = '\0';
password++;
@ -117,10 +136,12 @@ static int add_agent(struct ast_variable *var)
name++;
while (*name < 33) name++;
}
prev=NULL;
p = agents;
while(p) {
if (!strcmp(p->agent, tmp))
if (!pending && !strcmp(p->agent, tmp))
break;
prev = p;
p = p->next;
}
if (!p) {
@ -133,20 +154,29 @@ static int add_agent(struct ast_variable *var)
p->owning_app = -1;
p->app_sleep_cond = 1;
p->group = group;
p->next = agents;
agents = p;
p->pending = pending;
p->next = NULL;
if (prev)
prev->next = p;
else
agents = p;
}
}
if (!p)
return -1;
return NULL;
strncpy(p->password, password ? password : "", sizeof(p->password) - 1);
strncpy(p->name, name ? name : "", sizeof(p->name) - 1);
strncpy(p->moh, moh, sizeof(p->moh) - 1);
p->dead = 0;
return 0;
if (pending)
p->dead = 1;
else
p->dead = 0;
return p;
}
static int check_availability(struct agent_pvt *newlyavailable, int needlock);
static int agent_answer(struct ast_channel *ast)
{
ast_log(LOG_WARNING, "Huh? Agent is being asked to answer?\n");
@ -157,9 +187,12 @@ static struct ast_frame *agent_read(struct ast_channel *ast)
{
struct agent_pvt *p = ast->pvt->pvt;
struct ast_frame *f = NULL;
static struct ast_frame null_frame = { AST_FRAME_NULL, };
ast_pthread_mutex_lock(&p->lock);
if (p->chan)
f = ast_read(p->chan);
else
f = &null_frame;
if (!f) {
/* If there's a channel, make it NULL */
if (p->chan)
@ -182,6 +215,8 @@ static int agent_write(struct ast_channel *ast, struct ast_frame *f)
ast_pthread_mutex_lock(&p->lock);
if (p->chan)
res = ast_write(p->chan, f);
else
res = 0;
CLEANUP(ast, p);
ast_pthread_mutex_unlock(&p->lock);
return res;
@ -208,6 +243,8 @@ static int agent_indicate(struct ast_channel *ast, int condition)
ast_pthread_mutex_lock(&p->lock);
if (p->chan)
res = ast_indicate(p->chan, condition);
else
res = 0;
ast_pthread_mutex_unlock(&p->lock);
return res;
}
@ -219,6 +256,8 @@ static int agent_digit(struct ast_channel *ast, char digit)
ast_pthread_mutex_lock(&p->lock);
if (p->chan)
res = p->chan->pvt->send_digit(p->chan, digit);
else
res = 0;
ast_pthread_mutex_unlock(&p->lock);
return res;
}
@ -228,6 +267,18 @@ static int agent_call(struct ast_channel *ast, char *dest, int timeout)
struct agent_pvt *p = ast->pvt->pvt;
int res = -1;
ast_pthread_mutex_lock(&p->lock);
if (!p->chan) {
if (p->pending) {
ast_log(LOG_DEBUG, "Pretending to dial on pending agent\n");
ast_setstate(ast, AST_STATE_DIALING);
res = 0;
} else {
ast_log(LOG_NOTICE, "Whoa, they hung up between alloc and call... what are the odds of that?\n");
res = -1;
}
ast_pthread_mutex_unlock(&p->lock);
return res;
}
ast_verbose( VERBOSE_PREFIX_3 "agent_call, call to agent '%s' call on '%s'\n", p->agent, p->chan->name);
ast_log( LOG_DEBUG, "Playing beep, lang '%s'\n", p->chan->language);
res = ast_streamfile(p->chan, "beep", p->chan->language);
@ -241,8 +292,7 @@ static int agent_call(struct ast_channel *ast, char *dest, int timeout)
ast_log( LOG_DEBUG, "Set read format, result '%d'\n", res);
if (res)
ast_log(LOG_WARNING, "Unable to set read format to %d\n", ast_best_codec(p->chan->nativeformats));
}
else {
} else {
// Agent hung-up
p->chan = NULL;
}
@ -277,6 +327,8 @@ static int agent_hangup(struct ast_channel *ast)
ast_softhangup(p->chan, AST_SOFTHANGUP_EXPLICIT);
ast_moh_start(p->chan, p->moh);
ast_pthread_mutex_unlock(&p->chan->lock);
}
#if 0
ast_pthread_mutex_unlock(&p->lock);
/* Release ownership of the agent to other threads (presumably running the login app). */
ast_pthread_mutex_unlock(&p->app_lock);
@ -285,13 +337,27 @@ static int agent_hangup(struct ast_channel *ast)
ast_pthread_mutex_unlock(&p->lock);
/* Release ownership of the agent to other threads (presumably running the login app). */
ast_pthread_mutex_unlock(&p->app_lock);
free(p);
} else {
ast_pthread_mutex_unlock(&p->lock);
/* Release ownership of the agent to other threads (presumably running the login app). */
ast_pthread_mutex_unlock(&p->app_lock);
}
#endif
ast_pthread_mutex_unlock(&p->lock);
/* Release ownership of the agent to other threads (presumably running the login app). */
ast_pthread_mutex_unlock(&p->app_lock);
if (p->pending) {
agent_unlink(p);
}
if (p->dead)
free(p);
else {
/* Not dead -- check availability now */
ast_pthread_mutex_lock(&p->lock);
check_availability(p, 1);
ast_pthread_mutex_unlock(&p->lock);
}
return 0;
}
@ -305,8 +371,10 @@ static int agent_cont_sleep( void *data )
ast_pthread_mutex_lock(&p->lock);
res = p->app_sleep_cond;
ast_pthread_mutex_unlock(&p->lock);
#if 0
if( !res )
ast_log( LOG_DEBUG, "agent_cont_sleep() returning %d\n", res );
#endif
return res;
}
@ -314,20 +382,36 @@ static struct ast_channel *agent_new(struct agent_pvt *p, int state)
{
struct ast_channel *tmp;
struct ast_frame null_frame = { AST_FRAME_NULL };
#if 0
if (!p->chan) {
ast_log(LOG_WARNING, "No channel? :(\n");
return NULL;
}
#endif
tmp = ast_channel_alloc(0);
if (tmp) {
tmp->nativeformats = p->chan->nativeformats;
snprintf(tmp->name, sizeof(tmp->name), "Agent/%s", p->agent);
if (p->chan) {
tmp->nativeformats = p->chan->nativeformats;
tmp->writeformat = p->chan->writeformat;
tmp->pvt->rawwriteformat = p->chan->writeformat;
tmp->readformat = p->chan->readformat;
tmp->pvt->rawreadformat = p->chan->readformat;
strncpy(tmp->language, p->chan->language, sizeof(tmp->language)-1);
strncpy(tmp->context, p->chan->context, sizeof(tmp->context)-1);
strncpy(tmp->exten, p->chan->exten, sizeof(tmp->exten)-1);
} else {
tmp->nativeformats = AST_FORMAT_SLINEAR;
tmp->writeformat = AST_FORMAT_SLINEAR;
tmp->pvt->rawwriteformat = AST_FORMAT_SLINEAR;
tmp->readformat = AST_FORMAT_SLINEAR;
tmp->pvt->rawreadformat = AST_FORMAT_SLINEAR;
}
if (p->pending)
snprintf(tmp->name, sizeof(tmp->name), "Agent/P%s-%d", p->agent, rand() & 0xffff);
else
snprintf(tmp->name, sizeof(tmp->name), "Agent/%s", p->agent);
tmp->type = type;
ast_setstate(tmp, state);
tmp->writeformat = p->chan->writeformat;
tmp->pvt->rawwriteformat = p->chan->writeformat;
tmp->readformat = p->chan->readformat;
tmp->pvt->rawreadformat = p->chan->readformat;
tmp->pvt->pvt = p;
tmp->pvt->send_digit = agent_digit;
tmp->pvt->call = agent_call;
@ -338,14 +422,11 @@ static struct ast_channel *agent_new(struct agent_pvt *p, int state)
tmp->pvt->exception = agent_read;
tmp->pvt->indicate = agent_indicate;
tmp->pvt->fixup = agent_fixup;
strncpy(tmp->language, p->chan->language, sizeof(tmp->language)-1);
p->owner = tmp;
ast_pthread_mutex_lock(&usecnt_lock);
usecnt++;
ast_pthread_mutex_unlock(&usecnt_lock);
ast_update_use_count();
strncpy(tmp->context, p->chan->context, sizeof(tmp->context)-1);
strncpy(tmp->exten, p->chan->exten, sizeof(tmp->exten)-1);
tmp->priority = 1;
/* Wake up and wait for other applications (by definition the login app)
* to release this channel). Takes ownership of the agent channel
@ -373,11 +454,13 @@ static struct ast_channel *agent_new(struct agent_pvt *p, int state)
}
p->owning_app = pthread_self();
/* After the above step, there should not be any blockers. */
if (p->chan->blocking) {
ast_log( LOG_ERROR, "A blocker exists after agent channel ownership acquired\n" );
CRASH;
if (p->chan) {
if (p->chan->blocking) {
ast_log( LOG_ERROR, "A blocker exists after agent channel ownership acquired\n" );
CRASH;
}
ast_moh_stop(p->chan);
}
ast_moh_stop(p->chan);
} else
ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
return tmp;
@ -406,7 +489,7 @@ static int read_agent_config(void)
while(v) {
/* Create the interface list */
if (!strcasecmp(v->name, "agent")) {
add_agent(v);
add_agent(v->value, 0);
} else if (!strcasecmp(v->name, "group")) {
group = ast_get_group(v->value);
} else if (!strcasecmp(v->name, "musiconhold")) {
@ -442,23 +525,76 @@ static int read_agent_config(void)
return 0;
}
static int check_availability(struct agent_pvt *newlyavailable, int needlock)
{
struct ast_channel *chan=NULL, *parent=NULL;
struct agent_pvt *p;
int res;
ast_log(LOG_DEBUG, "Checking availability of '%s'\n", newlyavailable->agent);
if (needlock)
ast_pthread_mutex_lock(&agentlock);
p = agents;
while(p) {
if (p == newlyavailable) {
p = p->next;
continue;
}
ast_pthread_mutex_lock(&p->lock);
if (p->pending && ((p->group && (newlyavailable->group & p->group)) || !strcmp(p->agent, newlyavailable->agent))) {
ast_log(LOG_DEBUG, "Call '%s' looks like a winner for agent '%s'\n", p->owner->name, newlyavailable->agent);
/* We found a pending call, time to merge */
chan = agent_new(newlyavailable, AST_STATE_DOWN);
parent = p->owner;
ast_pthread_mutex_unlock(&p->lock);
break;
}
ast_pthread_mutex_unlock(&p->lock);
p = p->next;
}
if (needlock)
ast_pthread_mutex_unlock(&agentlock);
if (parent && chan) {
ast_log( LOG_DEBUG, "Playing beep, lang '%s'\n", newlyavailable->chan->language);
res = ast_streamfile(newlyavailable->chan, "beep", newlyavailable->chan->language);
ast_log( LOG_DEBUG, "Played beep, result '%d'\n", res);
if (!res) {
res = ast_waitstream(newlyavailable->chan, "");
ast_log( LOG_DEBUG, "Waited for stream, result '%d'\n", res);
}
if (!res) {
ast_setstate(parent, AST_STATE_UP);
ast_setstate(chan, AST_STATE_UP);
ast_channel_masquerade(parent, chan);
ast_hangup(chan);
} else {
ast_log(LOG_NOTICE, "Not sure this will always work..\n");
ast_hangup(chan);
}
}
return 0;
}
static struct ast_channel *agent_request(char *type, int format, void *data)
{
struct agent_pvt *p;
struct ast_channel *chan = NULL;
char *s;
unsigned int groupmatch;
int waitforagent=0;
s = data;
if ((s[0] == '@') && (sscanf(s + 1, "%d", &groupmatch) == 1)) {
groupmatch = (1 << groupmatch);
} else if ((s[0] == ':') && (sscanf(s + 1, "%d", &groupmatch) == 1)) {
groupmatch = (1 << groupmatch);
waitforagent = 1;
} else {
groupmatch = 0;
}
ast_pthread_mutex_lock(&agentlock);
p = agents;
while(p) {
if ((groupmatch && (p->group & groupmatch)) || !strcmp(data, p->agent)) {
ast_pthread_mutex_lock(&p->lock);
ast_pthread_mutex_lock(&p->lock);
if (!p->pending && ((groupmatch && (p->group & groupmatch)) || !strcmp(data, p->agent))) {
/* Agent must be registered, but not have any active call */
if (!p->owner && p->chan) {
chan = agent_new(p, AST_STATE_DOWN);
@ -466,12 +602,33 @@ static struct ast_channel *agent_request(char *type, int format, void *data)
ast_pthread_mutex_unlock(&p->lock);
break;
}
ast_pthread_mutex_unlock(&p->lock);
p = p->next;
}
if (!chan && waitforagent) {
/* No agent available -- but we're requesting to wait for one.
Allocate a place holder */
ast_log(LOG_DEBUG, "Creating place holder for '%s'\n", s);
p = add_agent(data, 1);
p->group = groupmatch;
chan = agent_new(p, AST_STATE_DOWN);
if (!chan) {
ast_log(LOG_WARNING, "Weird... Fix this to drop the unused pending agent\n");
}
}
ast_pthread_mutex_unlock(&agentlock);
return chan;
}
static int powerof(unsigned int v)
{
int x;
for (x=0;x<32;x++) {
if (v & (1 << x)) return x;
}
return 0;
}
static int agents_show(int fd, int argc, char **argv)
{
struct agent_pvt *p;
@ -485,24 +642,31 @@ static int agents_show(int fd, int argc, char **argv)
p = agents;
while(p) {
ast_pthread_mutex_lock(&p->lock);
if (strlen(p->name))
snprintf(username, sizeof(username), "(%s) ", p->name);
else
strcpy(username, "");
if (p->chan) {
snprintf(location, sizeof(location), "logged in on %s", p->chan->name);
if (p->owner && p->owner->bridge) {
snprintf(talkingto, sizeof(talkingto), " talking to %s", p->owner->bridge->name);
} else {
strcpy(talkingto, " is idle");
}
if (p->pending) {
if (p->group)
ast_cli(fd, "-- Pending call to group %d\n", powerof(p->group));
else
ast_cli(fd, "-- Pending call to agent %s\n", p->agent);
} else {
strcpy(location, "not logged in");
strcpy(talkingto, "");
if (strlen(p->name))
snprintf(username, sizeof(username), "(%s) ", p->name);
else
strcpy(username, "");
if (p->chan) {
snprintf(location, sizeof(location), "logged in on %s", p->chan->name);
if (p->owner && p->owner->bridge) {
snprintf(talkingto, sizeof(talkingto), " talking to %s", p->owner->bridge->name);
} else {
strcpy(talkingto, " is idle");
}
} else {
strcpy(location, "not logged in");
strcpy(talkingto, "");
}
ast_cli(fd, "%-12.12s %s%s%s\n", p->agent,
username, location, talkingto);
}
ast_pthread_mutex_unlock(&p->lock);
ast_cli(fd, "%-12.12s %s%s%s\n", p->agent,
username, location, talkingto);
p = p->next;
}
ast_pthread_mutex_unlock(&agentlock);
@ -561,7 +725,7 @@ static int login_exec(struct ast_channel *chan, void *data)
ast_pthread_mutex_lock(&agentlock);
p = agents;
while(p) {
if (!strcmp(p->agent, user))
if (!strcmp(p->agent, user) && !p->pending)
strncpy(xpass, p->password, sizeof(xpass) - 1);
p = p->next;
}
@ -584,7 +748,7 @@ static int login_exec(struct ast_channel *chan, void *data)
while(p) {
ast_pthread_mutex_lock(&p->lock);
if (!strcmp(p->agent, user) &&
!strcmp(p->password, pass)) {
!strcmp(p->password, pass) && !p->pending) {
if (!p->chan) {
play_announcement = 1;
if( options )
@ -622,6 +786,7 @@ static int login_exec(struct ast_channel *chan, void *data)
/* Login this channel and wait for it to
go away */
p->chan = chan;
check_availability(p, 0);
ast_pthread_mutex_unlock(&p->lock);
ast_pthread_mutex_unlock(&agentlock);
while (res >= 0) {

3
configs/queues.conf.sample
View File

@ -50,3 +50,6 @@
;member => Zap/2
;member => Agent/1001
;member => Agent/1002
;member => Agent/@1 ; Any agent in group 1
;member => Agent/:1 ; Any agent in group 1, wait for first.

15
file.c
View File

@ -778,10 +778,7 @@ char ast_waitstream(struct ast_channel *c, char *breakon)
while(c->stream) {
res = ast_sched_wait(c->sched);
if ((res < 0) && !c->timingfunc) {
if (c->stream)
ast_closestream(c->stream);
if (c->vstream)
ast_closestream(c->vstream);
ast_stopstream(c);
break;
}
if (res < 0)
@ -835,10 +832,7 @@ char ast_waitstream_fr(struct ast_channel *c, char *breakon, char *forward, char
while(c->stream) {
res = ast_sched_wait(c->sched);
if ((res < 0) && !c->timingfunc) {
if (c->stream)
ast_closestream(c->stream);
if (c->vstream)
ast_closestream(c->vstream);
ast_stopstream(c);
break;
}
if (res < 0)
@ -903,10 +897,7 @@ char ast_waitstream_full(struct ast_channel *c, char *breakon, int audiofd, int
while(c->stream) {
ms = ast_sched_wait(c->sched);
if ((ms < 0) && !c->timingfunc) {
if (c->stream)
ast_closestream(c->stream);
if (c->vstream)
ast_closestream(c->vstream);
ast_stopstream(c);
break;
}
if (ms < 0)