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authorJose Bollo <jose.bollo@iot.bzh>2020-01-03 16:50:29 +0100
committerJose Bollo <jose.bollo@iot.bzh>2020-01-03 16:53:38 +0100
commitf3d1f19ae308cc0559728c0ccf6281cbce5ee37c (patch)
treea922f41bd075348c16514d13fb9554f66a680032
parent8828c6be2c9be1b3fc1c74ea102caa4102bdb1a4 (diff)
afb-apiset: Fix start of apis
When using dynamically created/destroyed API, the binder might miss to start some apis. This fixes that issue by enforcing to restart from beginning until all is initialised. Bug-AGL: SPEC-3087 Change-Id: I4dd8c60c8465419a46132bf9f6deffa11e172e2a Signed-off-by: Jose Bollo <jose.bollo@iot.bzh>
-rw-r--r--src/afb-apiset.c101
1 files changed, 68 insertions, 33 deletions
diff --git a/src/afb-apiset.c b/src/afb-apiset.c
index 9fddd46c..dba8a6c9 100644
--- a/src/afb-apiset.c
+++ b/src/afb-apiset.c
@@ -30,7 +30,8 @@
#include "afb-xreq.h"
#include "jobs.h"
-#define INCR 8 /* CAUTION: must be a power of 2 */
+#define INCR 8 /* CAUTION: must be a power of 2 */
+#define NOT_STARTED -1
struct afb_apiset;
struct api_desc;
@@ -59,7 +60,10 @@ struct api_desc
{
struct api_desc *next;
const char *name; /**< name of the api */
- int status; /**< initialisation status */
+ int status; /**< initialisation status:
+ - NOT_STARTED not started,
+ - 0 started without error,
+ - greater than 0, error number of start */
struct afb_api_item api; /**< handler of the api */
struct {
struct api_array classes;
@@ -490,7 +494,7 @@ int afb_apiset_add(struct afb_apiset *set, const char *name, struct afb_api_item
if (!desc)
goto oom;
- desc->status = -1;
+ desc->status = NOT_STARTED;
desc->api = api;
desc->name = name;
@@ -710,11 +714,18 @@ static int start_array_apis(struct api_array *array)
{
int i, rc = 0, rc2;
- i = array->count;
- while (i) {
- rc2 = start_api(array->apis[--i]);
- if (rc2 < 0) {
- rc = rc2;
+ i = 0;
+ while (i < array->count) {
+ rc2 = array->apis[i]->status;
+ if (rc2 == NOT_STARTED) {
+ rc2 = start_api(array->apis[i]);
+ if (rc2 < 0)
+ rc = rc2;
+ i = 0;
+ } else {
+ if (rc2)
+ rc = -1;
+ i++;
}
}
return rc;
@@ -753,36 +764,45 @@ static int start_array_depends(struct api_array *array)
struct api_desc *api;
int i, rc = 0, rc2;
- i = array->count;
- while (i) {
- i--;
+ i = 0;
+ while (i < array->count) {
api = searchrec(array->depends[i]->set, array->depends[i]->name);
- if (!api)
+ if (!api) {
rc = -1;
- else {
- rc2 = start_api(api);
- if (rc2 < 0) {
- rc = rc2;
+ i++;
+ } else {
+ rc2 = api->status;
+ if (rc2 == NOT_STARTED) {
+ rc2 = start_api(api);
+ if (rc2 < 0)
+ rc = rc2;
+ i = 0;
+ } else {
+ if (rc2)
+ rc = -1;
+ i++;
}
}
}
+
return rc;
}
/**
* Starts the service 'api'.
* @param api the api
- * @return a positive number on success
+ * @return zero on success, -1 on error
*/
static int start_api(struct api_desc *api)
{
int rc;
- if (api->status == 0)
+ if (api->status != NOT_STARTED) {
+ if (api->status > 0) {
+ errno = api->status;
+ return -1;
+ }
return 0;
- else if (api->status > 0) {
- errno = api->status;
- return -1;
}
NOTICE("API %s starting...", api->name);
@@ -814,24 +834,29 @@ static int start_api(struct api_desc *api)
* @param set the set of API
* @param name the name of the API to get
* @param rec if not zero look also recursively in subsets
- * @return 0 in case of success or -1 in case of error
+ * @return a pointer to the API item in case of success or NULL in case of error
*/
const struct afb_api_item *afb_apiset_lookup_started(struct afb_apiset *set, const char *name, int rec)
{
- struct api_desc *i;
+ struct api_desc *desc;
- i = lookup(set, name, rec);
- if (i)
- return i->status && start_api(i) ? NULL : &i->api;
- errno = ENOENT;
- return NULL;
+ desc = lookup(set, name, rec);
+ if (!desc) {
+ errno = ENOENT;
+ return NULL;
+ }
+ if (start_api(desc)) {
+ errno = desc->status;
+ return NULL;
+ }
+ return &desc->api;
}
/**
* Starts a service by its 'api' name.
* @param set the api set
* @param name name of the service to start
- * @return a positive number on success
+ * @return zero on success, -1 on error
*/
int afb_apiset_start_service(struct afb_apiset *set, const char *name)
{
@@ -854,17 +879,27 @@ int afb_apiset_start_service(struct afb_apiset *set, const char *name)
*/
int afb_apiset_start_all_services(struct afb_apiset *set)
{
+ struct afb_apiset *rootset;
int rc, ret;
int i;
+ rootset = set;
ret = 0;
while (set) {
i = 0;
while (i < set->apis.count) {
- rc = start_api(set->apis.apis[i]);
- if (rc < 0)
- ret = rc;
- i++;
+ rc = set->apis.apis[i]->status;
+ if (rc == NOT_STARTED) {
+ rc = start_api(set->apis.apis[i]);
+ if (rc < 0)
+ ret = rc;
+ set = rootset;
+ i = 0;
+ } else {
+ if (rc)
+ ret = -1;
+ i++;
+ }
}
set = set->subset;
}