Correctly handle call flow with outgoing queue, avoiding retries while call acti

ve (bug #1018)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@2505 65c4cc65-6c06-0410-ace0-fbb531ad65f3

asterisk.c

@@ -65,7 +65,7 @@ int fully_booted = 0;
 
 static int ast_socket = -1;		/* UNIX Socket for allowing remote control */
 static int ast_consock = -1;		/* UNIX Socket for controlling another asterisk */
-static int mainpid;
+int ast_mainpid;
 struct console {
 	int fd;					/* File descriptor */
 	int p[2];				/* Pipe */
@@ -196,7 +196,7 @@ static void *netconsole(void *vconsole)
 	
 	if (gethostname(hostname, sizeof(hostname)))
 		strncpy(hostname, "<Unknown>", sizeof(hostname)-1);
-	snprintf(tmp, sizeof(tmp), "%s/%d/%s\n", hostname, mainpid, ASTERISK_VERSION);
+	snprintf(tmp, sizeof(tmp), "%s/%d/%s\n", hostname, ast_mainpid, ASTERISK_VERSION);
 	fdprint(con->fd, tmp);
 	for(;;) {
 		FD_ZERO(&rfds);	
@@ -1271,7 +1271,7 @@ int main(int argc, char *argv[])
 	}
 	if (gethostname(hostname, sizeof(hostname)))
 		strncpy(hostname, "<Unknown>", sizeof(hostname)-1);
-	mainpid = getpid();
+	ast_mainpid = getpid();
 	ast_ulaw_init();
 	ast_alaw_init();
 	callerid_init();
@@ -1500,7 +1500,7 @@ int main(int argc, char *argv[])
 		/* Register our quit function */
 		char title[256];
 		set_icon("Asterisk");
-		snprintf(title, sizeof(title), "Asterisk Console on '%s' (pid %d)", hostname, mainpid);
+		snprintf(title, sizeof(title), "Asterisk Console on '%s' (pid %d)", hostname, ast_mainpid);
 		set_title(title);
 	    ast_cli_register(&quit);
 	    ast_cli_register(&astexit);

include/asterisk/options.h

@@ -29,6 +29,7 @@ extern int fully_booted;
 extern char defaultlanguage[];
 extern time_t ast_startuptime;
 extern time_t ast_lastreloadtime;
+extern int ast_mainpid;
 
 #define VERBOSE_PREFIX_1 " "
 #define VERBOSE_PREFIX_2 "  == "

pbx/pbx_spool.c

@@ -50,6 +50,8 @@ struct outgoing {
 	int retrytime;
 	/* How long to wait for an answer */
 	int waittime;
+	/* PID which is currently calling */
+	int callingpid;
 	
 	/* What to connect to outgoing */
 	char tech[256];
@@ -157,6 +159,14 @@ static int apply_outgoing(struct outgoing *o, char *fn, FILE *f)
 						}
 					} else if (!strcasecmp(buf, "retry")) {
 						o->retries++;
+					} else if (!strcasecmp(buf, "startretry")) {
+						if (sscanf(c, "%d", &o->callingpid) != 1) {
+							ast_log(LOG_WARNING, "Unable to retrieve calling PID!\n");
+							o->callingpid = 0;
+						}
+					} else if (!strcasecmp(buf, "endretry") || !strcasecmp(buf, "abortretry")) {
+						o->callingpid = 0;
+						o->retries++;
 					} else if (!strcasecmp(buf, "setvar")) { /* JDG variable support */
 						strncat(o->variable, c, sizeof(o->variable) - strlen(o->variable) - 1);
 						strncat(o->variable, "|", sizeof(o->variable) - strlen(o->variable) - 1);
@@ -182,6 +192,21 @@ static int apply_outgoing(struct outgoing *o, char *fn, FILE *f)
 	return 0;
 }
 
+static void safe_append(struct outgoing *o, time_t now, char *s)
+{
+	int fd;
+	FILE *f;
+	fd = open(o->fn, O_WRONLY|O_APPEND);
+	if (fd > -1) {
+		f = fdopen(fd, "a");
+		if (f) {
+			fprintf(f, "%s: %d (%ld) (%ld)\n", s, o->retries, (long)ast_mainpid, (long) now);
+			fclose(f);
+		} else
+			close(fd);
+	}
+}
+
 static void *attempt_thread(void *data)
 {
 	struct outgoing *o = data;
@@ -201,6 +226,9 @@ static void *attempt_thread(void *data)
 			/* Max retries exceeded */
 			ast_log(LOG_EVENT, "Queued call to %s/%s expired without completion after %d attempt(s)\n", o->tech, o->dest, o->retries - 1);
 			unlink(o->fn);
+		} else {
+			/* Notate that the call is still active */
+			safe_append(o, time(NULL), "EndRetry");
 		}
 	} else {
 		ast_log(LOG_NOTICE, "Call completed to %s/%s\n", o->tech, o->dest);
@@ -234,23 +262,32 @@ static int scan_service(char *fn, time_t now, time_t atime)
 		f = fopen(fn, "r+");
 		if (f) {
 			if (!apply_outgoing(o, fn, f)) {
-				/* Increment retries */
-				o->retries++;
 #if 0
 				printf("Retries: %d, max: %d\n", o->retries, o->maxretries);
 #endif
-				if (o->retries <= o->maxretries + 1) {
-					/* Add a retry line at the end */
-					fseek(f, 0L, SEEK_END);
-					fprintf(f, "Retry: %d (%ld)\n", o->retries, (long) now);
-					fclose(f);
+				if (o->retries <= o->maxretries) {
+					if (o->callingpid && (o->callingpid == ast_mainpid)) {
+						ast_log(LOG_DEBUG, "Delaying retry since we're currently running '%s'\n", o->fn);
+					} else {
+						/* Increment retries */
+						o->retries++;
+						/* If someone else was calling, they're presumably gone now
+						   so abort their retry and continue as we were... */
+						if (o->callingpid)
+							safe_append(o, time(NULL), "AbortRetry");
+							
+						/* Add a retry line at the end */
+						fseek(f, 0L, SEEK_END);
+						fprintf(f, "StartRetry: %d %d (%ld)\n", ast_mainpid, o->retries, (long) now);
+						fclose(f);
+						launch_service(o);
+					}
 					/* Update the file time */
 					tbuf.actime = atime;
 					tbuf.modtime = now + o->retrytime;
 					if (utime(o->fn, &tbuf))
 						ast_log(LOG_WARNING, "Unable to set utime on %s: %s\n", fn, strerror(errno));
 					now += o->retrytime;
-					launch_service(o);
 					return now;
 				} else {
 					ast_log(LOG_EVENT, "Queued call to %s/%s expired without completion after %d attempt(s)\n", o->tech, o->dest, o->retries - 1);