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A simple telematics demo application for AGL.  It reads vehicle and
engine speed from the CAN low-level binding and publishes them via
MQTT.

Change-Id: Ib85904e87919053cad1215b3f53cee81db25c94a
Signed-off-by: Scott Murray <scott.murray@konsulko.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/app/afbclient.h b/app/afbclient.h
new file mode 100644
index 0000000..9a36581
--- /dev/null
+++ b/app/afbclient.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2019 Konsulko Group
+ *
+ * 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.
+ */
+
+#ifndef AFBCLIENT_H
+#define AFBCLIENT_H
+
+#include <string>
+#include <thread>
+#include <map>
+#include <functional>
+#include <systemd/sd-event.h>
+#include <json-c/json.h>
+
+extern "C"
+{
+#include <afb/afb-wsj1.h>
+#include <afb/afb-ws-client.h>
+}
+
+class AfbClient
+{
+public:
+	AfbClient(int port, const std::string &token);
+	~AfbClient();
+
+	using callback_fn = std::function<void(json_object*)>;
+
+	int call(const std::string &api, const std::string &verb, struct json_object* arg, callback_fn cb = nullptr);
+	int call_sync(const std::string &api, const std::string &verb, struct json_object* arg, struct json_object **resp = NULL);
+	int subscribe(const std::string &api, const std::string &event, const std::string &eventString, callback_fn cb, const std::string &eventValueString = "event");
+	int unsubscribe(const std::string &api, const std::string &eventString, const std::string &eventValueString = "event");
+
+	static void on_event_cb(void *closure, const char* event, struct afb_wsj1_msg *msg) {
+		if(closure)
+			static_cast<AfbClient*>(closure)->on_event(event, msg);
+	}
+
+private:
+	struct afb_wsj1 *m_ws = nullptr;
+	struct afb_wsj1_itf m_itf;
+	std::thread m_afb_thread;
+	sd_event *m_afb_loop = nullptr;
+	bool m_valid = false;
+
+	std::map<const std::string, callback_fn> m_event_handlers;
+
+	void on_event(const char* event, struct afb_wsj1_msg *msg);
+};
+
+#endif // AFBCLIENT_H