Initial code check-inicefish_8.99.5icefish_8.99.4icefish_8.99.3icefish_8.99.2icefish_8.99.1icefish/8.99.5icefish/8.99.4icefish/8.99.3icefish/8.99.2icefish/8.99.1halibut_8.0.6halibut_8.0.5halibut_8.0.4halibut_8.0.3halibut_8.0.2halibut_8.0.1halibut_8.0.0halibut_7.99.3halibut_7.99.2halibut_7.99.1halibut/8.0.6halibut/8.0.5halibut/8.0.4halibut/8.0.3halibut/8.0.2halibut/8.0.1halibut/8.0.0halibut/7.99.3halibut/7.99.2halibut/7.99.18.99.58.99.48.99.38.99.28.99.18.0.68.0.58.0.48.0.38.0.28.0.18.0.07.99.37.99.27.99.1halibut

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, 158 insertions, 0 deletions

diff --git a/app/main.cpp b/app/main.cpp
new file mode 100644
index 0000000..2b07cc1
--- /dev/null
+++ b/app/main.cpp
@@ -0,0 +1,158 @@
+/*
+ * 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.
+ */
+
+#include <string>
+#include <iostream>
+#include <cstring>
+#include <deque>
+#include <mutex>
+#include <condition_variable>
+#include <json-c/json.h>
+#include "configuration.h"
+#include "afbclient.h"
+#include "mqttclient.h"
+#include "network.h"
+#include "event.h"
+
+#define CONFIGURATION_FILE	"telematics-recorder.conf"
+#define DEVICE_UUID		"e4bbc0a8-f435-4326-9769-d4a2c9f3c18d"
+
+static std::deque<event_data*> g_event_queue;
+static std::mutex g_event_queue_mutex;
+static bool g_event_queue_ready = false;
+static std::condition_variable g_event_queue_cv;
+
+static Configuration g_config(CONFIGURATION_FILE, DEVICE_UUID);
+
+void diagnostic_message_cb(json_object *data)
+{
+	if(!data)
+		return;
+
+	if(g_config.getLogLevel() > 2) {
+		std::cerr << __FUNCTION__ << ": data = " <<		\
+			json_object_to_json_string_ext(data, JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_PRETTY) << \
+			std::endl;
+	}
+
+	struct json_object *j_name;
+	if(!json_object_object_get_ex(data, "name", &j_name))
+		return;
+	struct json_object *j_value;
+	if(!json_object_object_get_ex(data, "value", &j_value))
+		return;
+	struct json_object *j_timestamp;
+	if(!json_object_object_get_ex(data, "timestamp", &j_timestamp))
+		return;
+	uint64_t timestamp = json_object_get_int64(j_timestamp);
+
+	std::string name(json_object_get_string(j_name));
+	int32_t value = json_object_get_int(j_value);
+	if(name == "diagnostic_messages.vehicle.speed" ||
+	   name == "diagnostic_messages.engine.speed") {
+		if(g_config.getLogLevel() > 1) {
+			std::cerr << __FUNCTION__ << ": " << name << \
+			  ", value = " << value << \
+			  ", timestamp = " << timestamp << \
+			  std::endl;
+		}
+
+		name.erase(0, 20);
+		event_data* event = new event_data{ name, value, timestamp };
+		{
+			std::lock_guard<std::mutex> lk(g_event_queue_mutex);
+			g_event_queue.push_back(event);
+			g_event_queue_ready = true;
+		}
+		g_event_queue_cv.notify_one();
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	int port = 0;
+	std::string token;
+
+	try {
+		port = std::stol(argv[1]);
+		token = argv[2];
+	} catch (const std::invalid_argument& e) {
+		std::cerr << "Invalid argument" << std::endl;
+		exit(1);
+	} catch (const std::out_of_range& e) {
+		std::cerr << "Port out of range" << std::endl;
+		exit(1);
+	}
+
+	AfbClient afbclient(port, token);
+
+	if(g_config.isCellularEnabled()) {
+		// Wait for modem to appear, and enable it if not already
+		enable_modem(g_config, afbclient);
+	}
+
+	std::string client_id = g_config.getMqttClientId();
+	if(client_id.empty())
+		client_id = std::string("AGL-telematics-recorder") + DEVICE_UUID;
+	MqttClient mqttclient(client_id,
+			      g_config.getMqttBroker(),
+			      g_config.getMqttPort(),
+			      g_config.getMqttKeepalive(),
+			      g_config.getMqttUsername(),
+			      g_config.getMqttPassword());
+
+	afbclient.subscribe(std::string("low-can"),
+			    std::string("diagnostic_messages.vehicle.speed"),
+			    std::string("low-can/diagnostic_messages"),
+			    diagnostic_message_cb);
+	afbclient.subscribe(std::string("low-can"),
+			    std::string("diagnostic_messages.engine.speed"),
+			    std::string("low-can/diagnostic_messages"),
+			    diagnostic_message_cb);
+
+	std::deque<event_data*> event_queue;
+	while(true) {
+		// Wait until event callback sends data
+		std::unique_lock<std::mutex> lk(g_event_queue_mutex);
+		g_event_queue_cv.wait(lk, []{ return g_event_queue_ready; });
+		if(!g_event_queue.empty()) {
+			// copy out the events
+			event_queue = g_event_queue;
+			g_event_queue.clear();
+		}
+		g_event_queue_ready = false;
+		lk.unlock();
+
+		for(event_data *event : event_queue) {
+			if(!event)
+				continue;
+
+			if(g_config.getLogLevel() > 0) {
+				std::cerr << __FUNCTION__ << ": " << \
+					event->name << ", value = " << event->value << \
+					", timestamp = " << event->timestamp << \
+					std::endl;
+			}
+
+			process_event(g_config, afbclient, mqttclient, event);
+
+			delete event;
+		}
+		// Clear out processed events
+		event_queue.clear();
+	}
+	return 0;
+}