diff options
| -rw-r--r-- | src/monitor/monitor.c | 73 |
1 files changed, 59 insertions, 14 deletions
diff --git a/src/monitor/monitor.c b/src/monitor/monitor.c index 987a7854..40f1f56c 100644 --- a/src/monitor/monitor.c +++ b/src/monitor/monitor.c @@ -64,6 +64,19 @@ * doesn't shutdown on receiving SIGTERM */ #define MONITOR_DEF_FORCE_TIME 60 +/* TODO: get the restart related values from config */ +#define MONITOR_RESTART_CNT_INTERVAL_RESET 30 +/* maximum allowed number of service restarts if the restarts + * were less than MONITOR_RESTART_CNT_INTERVAL_RESET apart, which would + * indicate a crash after startup or after every request */ +#define MONITOR_MAX_SVC_RESTARTS 2 +/* The services are restarted with a delay in case the restart was + * hitting a race condition where the DP is not ready yet either. + * The MONITOR_MAX_RESTART_DELAY defines the maximum delay between + * restarts. + */ +#define MONITOR_MAX_RESTART_DELAY 4 + /* name of the monitor server instance */ #define MONITOR_NAME "sssd" #define SSSD_PIDFILE_PATH PID_PATH"/"MONITOR_NAME".pid" @@ -2507,11 +2520,44 @@ static void service_startup_handler(struct tevent_context *ev, _exit(1); } +static void mt_svc_restart(struct tevent_context *ev, + struct tevent_timer *te, + struct timeval t, void *ptr) +{ + struct mt_svc *svc; + + svc = talloc_get_type(ptr, struct mt_svc); + if (svc == NULL) { + return; + } + + DEBUG(SSSDBG_TRACE_FUNC, ("Scheduling service %s for restart %d\n", + svc->name, svc->restarts+1)); + + if (svc->type == MT_SVC_SERVICE) { + add_new_service(svc->mt_ctx, svc->name, svc->restarts + 1); + } else if (svc->type == MT_SVC_PROVIDER) { + add_new_provider(svc->mt_ctx, svc->name, svc->restarts + 1); + } else { + /* Invalid type? */ + DEBUG(SSSDBG_CRIT_FAILURE, + ("BUG: Invalid child process type [%d]\n", svc->type)); + } + + /* Free the old service (which will also remove it + * from the child list) + */ + talloc_free(svc); +} + static void mt_svc_exit_handler(int pid, int wait_status, void *pvt) { struct mt_svc *svc = talloc_get_type(pvt, struct mt_svc); struct mt_ctx *mt_ctx = svc->mt_ctx; time_t now = time(NULL); + struct tevent_timer *te; + struct timeval tv; + int restart_delay; if WIFEXITED(wait_status) { DEBUG(SSSDBG_OP_FAILURE, @@ -2532,12 +2578,12 @@ static void mt_svc_exit_handler(int pid, int wait_status, void *pvt) return; } - if ((now - svc->last_restart) > 30) { /* TODO: get val from config */ + if ((now - svc->last_restart) > MONITOR_RESTART_CNT_INTERVAL_RESET) { svc->restarts = 0; } /* Restart the service */ - if (svc->restarts > 2) { /* TODO: get val from config */ + if (svc->restarts > MONITOR_MAX_SVC_RESTARTS) { DEBUG(SSSDBG_FATAL_FAILURE, ("Process [%s], definitely stopped!\n", svc->name)); talloc_free(svc); @@ -2547,20 +2593,19 @@ static void mt_svc_exit_handler(int pid, int wait_status, void *pvt) return; } - if (svc->type == MT_SVC_SERVICE) { - add_new_service(svc->mt_ctx, svc->name, svc->restarts + 1); - } else if (svc->type == MT_SVC_PROVIDER) { - add_new_provider(svc->mt_ctx, svc->name, svc->restarts + 1); - } else { - /* Invalid type? */ - DEBUG(SSSDBG_CRIT_FAILURE, - ("BUG: Invalid child process type [%d]\n", svc->type)); + /* restarts are schedule after 0, 2, 4 seconds */ + restart_delay = svc->restarts << 1; + if (restart_delay > MONITOR_MAX_RESTART_DELAY) { + restart_delay = MONITOR_MAX_RESTART_DELAY; } - /* Free the old service (which will also remove it - * from the child list) - */ - talloc_free(svc); + tv = tevent_timeval_current_ofs(restart_delay, 0); + te = tevent_add_timer(svc->mt_ctx->ev, svc, tv, mt_svc_restart, svc); + if (!te) { + /* Nothing much we can do */ + DEBUG(SSSDBG_CRIT_FAILURE, ("Out of memory?!\n")); + return; + } } int main(int argc, const char *argv[]) |