Improve documentation of api v3

The documentation is improved to reflect the new version.

Tune the options

Change-Id: I894c3db3bc0c10e89db66a9a51a9ad049bb8c0c4
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 59 insertions, 0 deletions

diff --git a/docs/reference-v3/func-service.md b/docs/reference-v3/func-service.md
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+Functions of class afb_service
+==============================
+
+All the functions of the class **afb_daemon** use the default api.
+This are internally aliased to the corresponding legacy function of
+class **afb_api**.
+
+```C
+/**
+ * Calls the 'verb' of the 'api' with the arguments 'args' and 'verb' in the name of the binding.
+ * The result of the call is delivered to the 'callback' function with the 'callback_closure'.
+ *
+ * For convenience, the function calls 'json_object_put' for 'args'.
+ * Thus, in the case where 'args' should remain available after
+ * the function returns, the function 'json_object_get' shall be used.
+ *
+ * The 'callback' receives 3 arguments:
+ *  1. 'closure' the user defined closure pointer 'callback_closure',
+ *  2. 'status' a status being 0 on success or negative when an error occured,
+ *  2. 'result' the resulting data as a JSON object.
+ *
+ * @param api      The api name of the method to call
+ * @param verb     The verb name of the method to call
+ * @param args     The arguments to pass to the method
+ * @param callback The to call on completion
+ * @param callback_closure The closure to pass to the callback
+ *
+ * @see also 'afb_req_subcall'
+ */
+void afb_service_call(
+	const char *api,
+	const char *verb,
+	struct json_object *args,
+	void (*callback)(void*closure, int status, struct json_object *result),
+	void *callback_closure);
+
+/**
+ * Calls the 'verb' of the 'api' with the arguments 'args' and 'verb' in the name of the binding.
+ * 'result' will receive the response.
+ *
+ * For convenience, the function calls 'json_object_put' for 'args'.
+ * Thus, in the case where 'args' should remain available after
+ * the function returns, the function 'json_object_get' shall be used.
+ *
+ * @param api      The api name of the method to call
+ * @param verb     The verb name of the method to call
+ * @param args     The arguments to pass to the method
+ * @param result   Where to store the result - should call json_object_put on it -
+ *
+ * @returns 0 in case of success or a negative value in case of error.
+ *
+ * @see also 'afb_req_subcall'
+ */
+int afb_service_call_sync(
+	const char *api,
+	const char *verb,
+	struct json_object *args,
+	struct json_object **result);
+```
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