Factorize common code for handling requests

The common code for session handling is
shared using struct afb_xreq. At the moment
only hreq leverages the new feature.

The objective is double: make the work of
writing new internal requests more easy and
prepare to check permissions.

Change-Id: If3ca311d68c2d8c427d1125f31a2704b150c2c94
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

1 files changed, 66 insertions, 0 deletions

diff --git a/src/afb-xreq.h b/src/afb-xreq.h
new file mode 100644
index 00000000..42824d7d
--- /dev/null
+++ b/src/afb-xreq.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2017 "IoT.bzh"
+ * Author José Bollo <jose.bollo@iot.bzh>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+
+#define NO_BINDING_VERBOSE_MACRO
+#include <afb/afb-binding.h>
+#include "afb-context.h"
+#include "afb-evt.h"
+
+struct json_object;
+struct afb_evt_listener;
+
+struct afb_xreq_query_itf {
+	struct json_object *(*json)(void *closure);
+	struct afb_arg (*get)(void *closure, const char *name);
+	void (*success)(void *closure, struct json_object *obj, const char *info);
+	void (*fail)(void *closure, const char *status, const char *info);
+	void (*reply)(void *closure, struct json_object *obj);
+	void (*unref)(void *closure);
+	int (*subscribe)(void *closure, struct afb_event event);
+	int (*unsubscribe)(void *closure, struct afb_event event);
+	void (*subcall)(void *closure, const char *api, const char *verb, struct json_object *args, void (*callback)(void*, int, struct json_object*), void *cb_closure);
+};
+
+
+/**
+ * Internal data for requests
+ */
+struct afb_xreq
+{
+	struct afb_context context; /**< context of the request */
+	char *api;	/**< the requested API */
+	char *verb;	/**< the requested VERB */
+	void *query;	/**< closure for the query */
+	const struct afb_xreq_query_itf *queryitf;
+	int refcount;	/**< current ref count */
+	int replied;	/**< is replied? */
+	int timeout;	/**< timeout */
+	int sessionflags; /**< flags to check */
+	void *group;
+	void (*callback)(struct afb_req req);
+	struct afb_evt_listener *listener;
+};
+
+extern void afb_xreq_addref(struct afb_xreq *xreq);
+extern void afb_xreq_unref(struct afb_xreq *xreq);
+extern void afb_xreq_fail_f(struct afb_xreq *xreq, const char *status, const char *info, ...);
+extern void afb_xreq_success_f(struct afb_xreq *xreq, struct json_object *obj, const char *info, ...);
+extern void afb_xreq_call(struct afb_xreq *xreq);
+