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Unify manager behind a single event queue

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@16957 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Spencer
2006-04-02 19:59:55 +00:00
parent f69e6b9206
commit 6cfd28423c
2 changed files with 171 additions and 76 deletions
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5
include/asterisk/manager.h
View File

@@ -59,11 +59,6 @@
#define AST_MAX_MANHEADERS 80
#define AST_MAX_MANHEADER_LEN 256
struct eventqent {
struct eventqent *next;
char eventdata[1];
};
struct mansession;
struct message {

242
manager.c
View File

@@ -83,6 +83,14 @@ struct fast_originate_helper {
struct ast_variable *vars;
};
struct eventqent {
int usecount;
int category;
ast_mutex_t lock;
struct eventqent *next;
char eventdata[1];
};
static int enabled = 0;
static int portno = DEFAULT_MANAGER_PORT;
static int asock = -1;
@@ -93,6 +101,8 @@ static int httptimeout = 60;
static pthread_t t;
AST_MUTEX_DEFINE_STATIC(sessionlock);
static int block_sockets = 0;
static int num_sessions = 0;
struct eventqent *master_eventq = NULL;
static struct permalias {
int num;
@@ -472,6 +482,23 @@ static int handle_showmanconn(int fd, int argc, char *argv[])
return RESULT_SUCCESS;
}
/*! \brief handle_showmanconn: CLI command show manager connected */
/* Should change to "manager show connected" */
static int handle_showmaneventq(int fd, int argc, char *argv[])
{
struct eventqent *s;
ast_mutex_lock(&sessionlock);
s = master_eventq;
while (s) {
ast_cli(fd, "Usecount: %d\n",s->usecount);
ast_cli(fd, "Category: %d\n", s->category);
ast_cli(fd, "Event:\n%s", s->eventdata);
s = s->next;
}
ast_mutex_unlock(&sessionlock);
return RESULT_SUCCESS;
}
static char showmancmd_help[] =
"Usage: show manager command <actionname>\n"
" Shows the detailed description for a specific Asterisk manager interface command.\n";
@@ -485,6 +512,11 @@ static char showmanconn_help[] =
" Prints a listing of the users that are currently connected to the\n"
"Asterisk manager interface.\n";
static char showmaneventq_help[] =
"Usage: show manager eventq\n"
" Prints a listing of all events pending in the Asterisk manger\n"
"event queue.\n";
static struct ast_cli_entry show_mancmd_cli =
{ { "show", "manager", "command", NULL },
handle_showmancmd, "Show a manager interface command", showmancmd_help, complete_show_mancmd };
@@ -497,6 +529,24 @@ static struct ast_cli_entry show_manconn_cli =
{ { "show", "manager", "connected", NULL },
handle_showmanconn, "Show connected manager interface users", showmanconn_help };
static struct ast_cli_entry show_maneventq_cli =
{ { "show", "manager", "eventq", NULL },
handle_showmaneventq, "Show manager interface queued events", showmaneventq_help };
static void unuse_eventqent(struct eventqent *e)
{
/* XXX Need to atomically decrement the users. Change this to atomic_dec
one day when we have such a beast XXX */
int val;
ast_mutex_lock(&e->lock);
e->usecount--;
val = e->usecount && e->next;
ast_mutex_unlock(&e->lock);
/* Wake up sleeping beauty */
if (val)
pthread_kill(t, SIGURG);
}
static void free_session(struct mansession *s)
{
struct eventqent *eqe;
@@ -508,7 +558,7 @@ static void free_session(struct mansession *s)
while(s->eventq) {
eqe = s->eventq;
s->eventq = s->eventq->next;
free(eqe);
unuse_eventqent(eqe);
}
free(s);
}
@@ -530,6 +580,7 @@ static void destroy_session(struct mansession *s)
else
sessions = cur->next;
free_session(s);
num_sessions--;
} else
ast_log(LOG_WARNING, "Trying to delete nonexistent session %p?\n", s);
ast_mutex_unlock(&sessionlock);
@@ -876,7 +927,7 @@ static int action_waitevent(struct mansession *s, struct message *m)
ast_log(LOG_DEBUG, "Starting waiting for an event!\n");
for (x=0;((x<timeout) || (timeout < 0)); x++) {
ast_mutex_lock(&s->__lock);
if (s->eventq)
if (s->eventq && s->eventq->next)
needexit = 1;
if (s->waiting_thread != pthread_self())
needexit = 1;
@@ -898,11 +949,14 @@ static int action_waitevent(struct mansession *s, struct message *m)
if (s->waiting_thread == pthread_self()) {
astman_send_response(s, m, "Success", "Waiting for Event...");
/* Only show events if we're the most recent waiter */
while(s->eventq) {
astman_append(s, "%s", s->eventq->eventdata);
eqe = s->eventq;
s->eventq = s->eventq->next;
free(eqe);
while(s->eventq->next) {
eqe = s->eventq->next;
if (((s->readperm & eqe->category) == eqe->category) &&
((s->send_events & eqe->category) == eqe->category)) {
astman_append(s, "%s", eqe->eventdata);
}
unuse_eventqent(s->eventq);
s->eventq = eqe;
}
astman_append(s,
"Event: WaitEventComplete\r\n"
@@ -1566,6 +1620,30 @@ static int action_timeout(struct mansession *s, struct message *m)
return 0;
}
static int process_events(struct mansession *s)
{
struct eventqent *eqe;
int ret = 0;
ast_mutex_lock(&s->__lock);
if (s->fd > -1) {
s->busy--;
if (!s->eventq)
s->eventq = master_eventq;
while(s->eventq->next) {
eqe = s->eventq->next;
if ((s->authenticated && (s->readperm & eqe->category) == eqe->category) &&
((s->send_events & eqe->category) == eqe->category)) {
if (!ret && ast_carefulwrite(s->fd, eqe->eventdata, strlen(eqe->eventdata), s->writetimeout) < 0)
ret = -1;
}
unuse_eventqent(s->eventq);
s->eventq = eqe;
}
}
ast_mutex_unlock(&s->__lock);
return ret;
}
static int process_message(struct mansession *s, struct message *m)
{
char action[80] = "";
@@ -1573,6 +1651,7 @@ static int process_message(struct mansession *s, struct message *m)
char *id = astman_get_header(m,"ActionID");
char idText[256] = "";
char iabuf[INET_ADDRSTRLEN];
int ret = 0;
ast_copy_string(action, astman_get_header(m, "Action"), sizeof(action));
ast_log( LOG_DEBUG, "Manager received command '%s'\n", action );
@@ -1581,9 +1660,9 @@ static int process_message(struct mansession *s, struct message *m)
astman_send_error(s, m, "Missing action in request");
return 0;
}
if (!ast_strlen_zero(id)) {
snprintf(idText, sizeof(idText), "ActionID: %s\r\n",id);
}
if (!ast_strlen_zero(id)) {
snprintf(idText, sizeof(idText), "ActionID: %s\r\n",id);
}
if (!s->authenticated) {
if (!strcasecmp(action, "Challenge")) {
char *authtype;
@@ -1623,8 +1702,6 @@ static int process_message(struct mansession *s, struct message *m)
} else
astman_send_error(s, m, "Authentication Required");
} else {
int ret=0;
struct eventqent *eqe;
ast_mutex_lock(&s->__lock);
s->busy++;
ast_mutex_unlock(&s->__lock);
@@ -1642,23 +1719,10 @@ static int process_message(struct mansession *s, struct message *m)
}
if (!tmp)
astman_send_error(s, m, "Invalid/unknown command");
ast_mutex_lock(&s->__lock);
if (s->fd > -1) {
s->busy--;
while(s->eventq) {
if (ast_carefulwrite(s->fd, s->eventq->eventdata, strlen(s->eventq->eventdata), s->writetimeout) < 0) {
ret = -1;
break;
}
eqe = s->eventq;
s->eventq = s->eventq->next;
free(eqe);
}
}
ast_mutex_unlock(&s->__lock);
return ret;
}
return 0;
if (ret)
return ret;
return process_events(s);
}
static int get_input(struct mansession *s, char *output)
@@ -1687,12 +1751,20 @@ static int get_input(struct mansession *s, char *output)
fds[0].fd = s->fd;
fds[0].events = POLLIN;
do {
ast_mutex_lock(&s->__lock);
s->waiting_thread = pthread_self();
ast_mutex_unlock(&s->__lock);
res = poll(fds, 1, -1);
ast_mutex_lock(&s->__lock);
s->waiting_thread = AST_PTHREADT_NULL;
ast_mutex_unlock(&s->__lock);
if (res < 0) {
if (errno == EINTR) {
if (s->dead)
return -1;
continue;
return 0;
}
ast_log(LOG_WARNING, "Select returned error: %s\n", strerror(errno));
return -1;
@@ -1734,8 +1806,12 @@ static void *session_do(void *data)
memset(&m, 0, sizeof(m));
} else if (m.hdrcount < AST_MAX_MANHEADERS - 1)
m.hdrcount++;
} else if (res < 0)
} else if (res < 0) {
break;
} else if (s->eventq->next) {
if (process_events(s))
break;
}
}
if (s->authenticated) {
if (option_verbose > 1) {
@@ -1759,6 +1835,7 @@ static void *accept_thread(void *ignore)
int as;
struct sockaddr_in sin;
socklen_t sinlen;
struct eventqent *eqe;
struct mansession *s, *prev=NULL, *next;
struct protoent *p;
int arg = 1;
@@ -1779,6 +1856,7 @@ static void *accept_thread(void *ignore)
while(s) {
next = s->next;
if (s->sessiontimeout && (now > s->sessiontimeout) && !s->inuse) {
num_sessions--;
if (prev)
prev->next = next;
else
@@ -1792,6 +1870,14 @@ static void *accept_thread(void *ignore)
prev = s;
s = next;
}
/* Purge master event queue of old, unused events, but make sure we
always keep at least one in the queue */
eqe = master_eventq;
while (master_eventq->next && !master_eventq->usecount) {
eqe = master_eventq;
master_eventq = master_eventq->next;
free(eqe);
}
ast_mutex_unlock(&sessionlock);
sinlen = sizeof(sin);
@@ -1831,8 +1917,17 @@ static void *accept_thread(void *ignore)
s->fd = as;
s->send_events = -1;
ast_mutex_lock(&sessionlock);
num_sessions++;
s->next = sessions;
sessions = s;
/* Find the last place in the master event queue and hook ourselves
in there */
s->eventq = master_eventq;
while(s->eventq->next)
s->eventq = s->eventq->next;
ast_mutex_lock(&s->eventq->lock);
s->eventq->usecount++;
ast_mutex_unlock(&s->eventq->lock);
ast_mutex_unlock(&sessionlock);
if (ast_pthread_create(&s->t, &attr, session_do, s))
destroy_session(s);
@@ -1841,21 +1936,24 @@ static void *accept_thread(void *ignore)
return NULL;
}
static int append_event(struct mansession *s, const char *str)
static int append_event(const char *str, int category)
{
struct eventqent *tmp, *prev=NULL;
tmp = malloc(sizeof(struct eventqent) + strlen(str));
if (tmp) {
ast_mutex_init(&tmp->lock);
tmp->next = NULL;
tmp->category = category;
strcpy(tmp->eventdata, str);
if (s->eventq) {
prev = s->eventq;
if (master_eventq) {
prev = master_eventq;
while(prev->next)
prev = prev->next;
prev->next = tmp;
} else {
s->eventq = tmp;
master_eventq = tmp;
}
tmp->usecount = num_sessions;
return 0;
}
return -1;
@@ -1870,45 +1968,33 @@ int manager_event(int category, const char *event, const char *fmt, ...)
char *tmp_next = tmp;
size_t tmp_left = sizeof(tmp) - 2;
va_list ap;
struct timeval now;
/* Abort if there aren't any manager sessions */
if (!num_sessions)
return 0;
ast_build_string(&tmp_next, &tmp_left, "Event: %s\r\nPrivilege: %s\r\n",
event, authority_to_str(category, auth, sizeof(auth)));
if (timestampevents) {
now = ast_tvnow();
ast_build_string(&tmp_next, &tmp_left, "Timestamp: %ld.%06lu\r\n",
now.tv_sec, (unsigned long) now.tv_usec);
}
va_start(ap, fmt);
ast_build_string_va(&tmp_next, &tmp_left, fmt, ap);
va_end(ap);
*tmp_next++ = '\r';
*tmp_next++ = '\n';
*tmp_next = '\0';
ast_mutex_lock(&sessionlock);
/* Append even to master list and wake up any sleeping sessions */
append_event(tmp, category);
for (s = sessions; s; s = s->next) {
if ((s->readperm & category) != category)
continue;
if ((s->send_events & category) != category)
continue;
if (ast_strlen_zero(tmp)) {
struct timeval now;
ast_build_string(&tmp_next, &tmp_left, "Event: %s\r\nPrivilege: %s\r\n",
event, authority_to_str(category, auth, sizeof(auth)));
if (timestampevents) {
now = ast_tvnow();
ast_build_string(&tmp_next, &tmp_left, "Timestamp: %ld.%06lu\r\n",
now.tv_sec, (unsigned long) now.tv_usec);
}
va_start(ap, fmt);
ast_build_string_va(&tmp_next, &tmp_left, fmt, ap);
va_end(ap);
*tmp_next++ = '\r';
*tmp_next++ = '\n';
*tmp_next = '\0';
}
ast_mutex_lock(&s->__lock);
if (s->busy) {
append_event(s, tmp);
if (s->waiting_thread != AST_PTHREADT_NULL)
pthread_kill(s->waiting_thread, SIGURG);
} else if (!s->dead && !s->sessiontimeout) {
if (ast_carefulwrite(s->fd, tmp, tmp_next - tmp, s->writetimeout) < 0) {
ast_log(LOG_WARNING, "Disconnecting slow (or gone) manager session!\n");
s->dead = 1;
pthread_kill(s->t, SIGURG);
}
}
if (s->waiting_thread != AST_PTHREADT_NULL)
pthread_kill(s->waiting_thread, SIGURG);
ast_mutex_unlock(&s->__lock);
}
ast_mutex_unlock(&sessionlock);
@@ -2084,12 +2170,23 @@ static char *generic_http_callback(int format, struct sockaddr_in *requestor, co
s->managerid = rand() | (unsigned long)s;
s->next = sessions;
sessions = s;
num_sessions++;
/* Hook into the last spot in the event queue */
s->eventq = master_eventq;
while(s->eventq->next)
s->eventq = s->eventq->next;
ast_mutex_lock(&s->eventq->lock);
s->eventq->usecount++;
ast_mutex_unlock(&s->eventq->lock);
ast_mutex_unlock(&sessionlock);
}
/* Reset HTTP timeout */
/* Reset HTTP timeout. If we're not yet authenticated, keep it extremely short */
time(&s->sessiontimeout);
s->sessiontimeout += httptimeout;
if (!s->authenticated && (httptimeout > 5))
s->sessiontimeout += 5;
else
s->sessiontimeout += httptimeout;
ast_mutex_unlock(&s->__lock);
memset(&m, 0, sizeof(m));
@@ -2248,8 +2345,11 @@ int init_manager(void)
ast_cli_register(&show_mancmd_cli);
ast_cli_register(&show_mancmds_cli);
ast_cli_register(&show_manconn_cli);
ast_cli_register(&show_maneventq_cli);
ast_extension_state_add(NULL, NULL, manager_state_cb, NULL);
registered = 1;
/* Append placeholder event so master_eventq never runs dry */
append_event("Event: Placeholder\r\n\r\n", 0);
}
portno = DEFAULT_MANAGER_PORT;
displayconnects = 1;