verbose: Fix wrong error report
[src/app-framework-binder.git] / src / afb-svc.c
index b4032e3..212ecfa 100644 (file)
 #include "afb-xreq.h"
 #include "afb-cred.h"
 #include "afb-apiset.h"
+#include "afb-hook.h"
 #include "jobs.h"
 #include "verbose.h"
 
-/*
- * Structure for recording service
- */
-struct afb_svc
-{
-       /* session of the service */
-       struct afb_session *session;
 
-       /* the apiset for the service */
-       struct afb_apiset *apiset;
-
-       /* event listener of the service or NULL */
-       struct afb_evt_listener *listener;
-
-       /* on event callback for the service */
-       void (*on_event)(const char *event, struct json_object *object);
-};
+#define HOOK(x,...) if((svc)->hookflags & afb_hook_flag_svc_##x) afb_hook_svc_##x(__VA_ARGS__)
 
 /*
  * Structure for requests initiated by the service
@@ -71,7 +57,8 @@ struct svc_req
        /* sync */
        struct jobloop *jobloop;
        struct json_object *result;
-       int iserror;
+       int status;
+       int async;
 };
 
 /* functions for services */
@@ -95,7 +82,7 @@ static const struct afb_evt_itf evt_itf = {
 
 /* functions for requests of services */
 static void svcreq_destroy(struct afb_xreq *xreq);
-static void svcreq_reply(struct afb_xreq *xreq, int iserror, json_object *obj);
+static void svcreq_reply(struct afb_xreq *xreq, int status, json_object *obj);
 
 /* interface for requests of services */
 const struct afb_xreq_query_itf afb_svc_xreq_itf = {
@@ -114,22 +101,29 @@ static inline struct afb_service to_afb_service(struct afb_svc *svc)
 /*
  * Frees a service
  */
-static void svc_free(struct afb_svc *svc)
+void afb_svc_destroy(struct afb_svc *svc, struct afb_service *service)
 {
-       if (svc->listener != NULL)
-               afb_evt_listener_unref(svc->listener);
-       if (svc->session)
-               afb_session_unref(svc->session);
-       afb_apiset_unref(svc->apiset);
-       free(svc);
+       if (service)
+               *service = (struct afb_service){ .itf = NULL, .closure = NULL };
+       if (svc) {
+               if (svc->listener != NULL)
+                       afb_evt_listener_unref(svc->listener);
+               if (svc->session)
+                       afb_session_unref(svc->session);
+               afb_apiset_unref(svc->apiset);
+               free(svc);
+       }
 }
 
 /*
- * Allocates a new service
+ * Creates a new service
  */
-static struct afb_svc *afb_svc_alloc(
+struct afb_svc *afb_svc_create(
+                       const char *api,
                        struct afb_apiset *apiset,
-                       int share_session
+                       int share_session,
+                       void (*on_event)(const char *event, struct json_object *object),
+                       struct afb_service *service
 )
 {
        struct afb_svc *svc;
@@ -142,6 +136,7 @@ static struct afb_svc *afb_svc_alloc(
        }
 
        /* instanciate the apiset */
+       svc->api = api;
        svc->apiset = afb_apiset_addref(apiset);
 
        /* instanciate the session */
@@ -160,30 +155,9 @@ static struct afb_svc *afb_svc_alloc(
                        goto error;
        }
 
-       return svc;
-
-error:
-       svc_free(svc);
-       return NULL;
-}
-
-/*
- * Creates a new service
- */
-struct afb_svc *afb_svc_create_v1(
-               struct afb_apiset *apiset,
-               int share_session,
-               int (*start)(struct afb_service service),
-               void (*on_event)(const char *event, struct json_object *object)
-)
-{
-       int rc;
-       struct afb_svc *svc;
-
-       /* allocates the svc handler */
-       svc = afb_svc_alloc(apiset, share_session);
-       if (svc == NULL)
-               goto error;
+       svc->hookflags = afb_hook_flags_svc(svc->api);
+       if (service)
+               *service = to_afb_service(svc);
 
        /* initialises the listener if needed */
        if (on_event) {
@@ -193,58 +167,45 @@ struct afb_svc *afb_svc_create_v1(
                        goto error;
        }
 
-       /* initialises the svc now */
-       rc = start(to_afb_service(svc));
-       if (rc < 0)
-               goto error;
-
        return svc;
 
 error:
-       svc_free(svc);
+       afb_svc_destroy(svc, service);
        return NULL;
 }
 
 /*
- * Creates a new service
+ * Starts a new service (v1)
  */
-struct afb_svc *afb_svc_create_v2(
-                       struct afb_apiset *apiset,
-                       int share_session,
-                       int (*start)(),
-                       void (*on_event)(const char *event, struct json_object *object),
-                       struct afb_binding_data_v2 *data
-)
+int afb_svc_start_v1(struct afb_svc *svc, int (*start)(struct afb_service))
 {
        int rc;
-       struct afb_svc *svc;
-
-       /* allocates the svc handler */
-       svc = afb_svc_alloc(apiset, share_session);
-       if (svc == NULL)
-               goto error;
-       data->service = to_afb_service(svc);
 
-       /* initialises the listener if needed */
-       if (on_event) {
-               svc->on_event = on_event;
-               svc->listener = afb_evt_listener_create(&evt_itf, svc);
-               if (svc->listener == NULL)
-                       goto error;
-       }
+       HOOK(start_before, svc);
+       rc = start(to_afb_service(svc));
+       HOOK(start_after, svc, rc);
+       return rc;
+}
 
-       /* starts the svc if needed */
-       if (start) {
-               rc = start();
-               if (rc < 0)
-                       goto error;
-       }
+/*
+ * Starts a new service (v2)
+ */
+int afb_svc_start_v2(struct afb_svc *svc, int (*start)())
+{
+       int rc;
 
-       return svc;
+       HOOK(start_before, svc);
+       rc = start();
+       HOOK(start_after, svc, rc);
+       return rc;
+}
 
-error:
-       svc_free(svc);
-       return NULL;
+/*
+ * Request to updates the hooks
+ */
+void afb_svc_update_hook(struct afb_svc *svc)
+{
+       svc->hookflags = afb_hook_flags_svc(svc->api);
 }
 
 /*
@@ -253,7 +214,10 @@ error:
 static void svc_on_event(void *closure, const char *event, int eventid, struct json_object *object)
 {
        struct afb_svc *svc = closure;
+
+       HOOK(on_event_before, svc, event, eventid, object);
        svc->on_event(event, object);
+       HOOK(on_event_after, svc, event, eventid, object);
        json_object_put(object);
 }
 
@@ -311,14 +275,17 @@ static void svcreq_sync_leave(struct svc_req *svcreq)
        }
 }
 
-static void svcreq_reply(struct afb_xreq *xreq, int iserror, json_object *obj)
+static void svcreq_reply(struct afb_xreq *xreq, int status, json_object *obj)
 {
        struct svc_req *svcreq = CONTAINER_OF_XREQ(struct svc_req, xreq);
-       if (svcreq->callback) {
-               svcreq->callback(svcreq->closure, iserror, obj);
+       if (svcreq->async) {
+               struct afb_svc *svc = svcreq->svc;
+               if (svcreq->callback)
+                       svcreq->callback(svcreq->closure, status, obj);
+               HOOK(call_result, svc, status, obj);
                json_object_put(obj);
        } else {
-               svcreq->iserror = iserror;
+               svcreq->status = status;
                svcreq->result = obj;
                svcreq_sync_leave(svcreq);
        }
@@ -333,7 +300,7 @@ static void svcreq_sync_enter(int signum, void *closure, struct jobloop *jobloop
                afb_xreq_process(&svcreq->xreq, svcreq->svc->apiset);
        } else {
                svcreq->result = afb_msg_json_internal_error();
-               svcreq->iserror = 1;
+               svcreq->status = -1;
                svcreq_sync_leave(svcreq);
        }
 }
@@ -347,13 +314,17 @@ static void svc_call(void *closure, const char *api, const char *verb, struct js
        struct svc_req *svcreq;
        struct json_object *ierr;
 
+       HOOK(call, svc, api, verb, args);
+
        /* allocates the request */
        svcreq = svcreq_create(svc, api, verb, args);
        if (svcreq == NULL) {
                ERROR("out of memory");
                json_object_put(args);
                ierr = afb_msg_json_internal_error();
-               callback(cbclosure, 1, ierr);
+               if (callback)
+                       callback(cbclosure, -1, ierr);
+               HOOK(call_result, svc, -1, ierr);
                json_object_put(ierr);
                return;
        }
@@ -362,6 +333,7 @@ static void svc_call(void *closure, const char *api, const char *verb, struct js
        svcreq->jobloop = NULL;
        svcreq->callback = callback;
        svcreq->closure = cbclosure;
+       svcreq->async = 1;
 
        /* terminates and frees ressources if needed */
        afb_xreq_process(&svcreq->xreq, svc->apiset);
@@ -372,28 +344,38 @@ static int svc_call_sync(void *closure, const char *api, const char *verb, struc
 {
        struct afb_svc *svc = closure;
        struct svc_req *svcreq;
+       struct json_object *resu;
        int rc;
 
+       HOOK(callsync, svc, api, verb, args);
+
        /* allocates the request */
        svcreq = svcreq_create(svc, api, verb, args);
        if (svcreq == NULL) {
                ERROR("out of memory");
                errno = ENOMEM;
                json_object_put(args);
-               *result = afb_msg_json_internal_error();
-               return -1;
+               resu = afb_msg_json_internal_error();
+               rc = -1;
+       } else {
+               /* initialises the request */
+               svcreq->jobloop = NULL;
+               svcreq->callback = NULL;
+               svcreq->result = NULL;
+               svcreq->status = 0;
+               svcreq->async = 0;
+               afb_xreq_addref(&svcreq->xreq);
+               rc = jobs_enter(NULL, 0, svcreq_sync_enter, svcreq);
+               if (rc >= 0)
+                       rc = svcreq->status;
+               resu = (rc >= 0 || svcreq->result) ? svcreq->result : afb_msg_json_internal_error();
+               afb_xreq_unref(&svcreq->xreq);
        }
-
-       /* initialises the request */
-       svcreq->jobloop = NULL;
-       svcreq->callback = NULL;
-       svcreq->result = NULL;
-       svcreq->iserror = 1;
-       afb_xreq_addref(&svcreq->xreq);
-       rc = jobs_enter(NULL, 0, svcreq_sync_enter, svcreq);
-       rc = rc >= 0 && !svcreq->iserror;
-       *result = (rc || svcreq->result) ? svcreq->result : afb_msg_json_internal_error();
-       afb_xreq_unref(&svcreq->xreq);
+       HOOK(callsync_result, svc, rc, resu);
+       if (result)
+               *result = resu;
+       else
+               json_object_put(resu);
        return rc;
 }