improve systemd unit file

Reviewed-on: #18
Reviewed-by: Philipp Schweizer <Philipp.schw@directbox.com>

.gitignore

@@ -0,0 +1 @@
+docker-compose.yml

README.md

@@ -11,10 +11,11 @@ We recommend using [The Things Network](https://www.thethingsnetwork.org/) (TTN)
     - [Database](#database)
     - [Configuration](#configuration)
 2. [TTN Integration](#ttn-integration)
-3. [Add a Location Tracker](#add-a-location-tracker)
+3. [Prometheus Metrics](#prometheus-metrics)
+4. [Add a Location Tracker](#add-a-location-tracker)
     - [Onboard SenseCAP T1000-B](#onboard-sensecap-t1000-b)
     - [Register SenseCAP T1000-B](#register-sensecap-t1000-b)
-4. [Testing](#testing)
+5. [Testing](#testing)
     - [Testing Webhook](#testing-webhook)
     - [Emulating Wigle API](#emulating-wigle-api)
 
@@ -49,9 +50,15 @@ Add a addidtional header:
 - Type: `authorization` 
 - Value: `Bearer your-very-secure-token-from-the-env-file`
 
+### Prometheus Metrics
+Use `https://your.domain.tld/api/metrics` to retrieve useful insides for monitoring.
+
 ## Add a Location Tracker
 We use the [SenseCAP T1000-B](https://www.seeedstudio.com/SenseCAP-Card-Tracker-T1000-B-p-5698.html) from seeedstudio because of the fair price and multiple location providers. However, you can use any LoRaWAN-enabled tracker that is compatible with TTN and supports the required payload fields.
 
+## Troubleshooting
+Run `journalctl -u locationhub.service -f` to see log output.
+
 ### Onboard SenseCAP T1000-B
 1. Download and install the App [SenseCraft](https://play.google.com/store/apps/details?id=cc.seeed.sensecapmate) 
 2. Skip the user account at startup with `Skip` in the upper right corner
@@ -60,7 +67,7 @@ We use the [SenseCAP T1000-B](https://www.seeedstudio.com/SenseCAP-Card-Tracker-
 5. In the `Settings` tab select `The Things Network` as Platform under `LoRa`
 6. Copy `Device EUI`, `AppEUI` and `AppKey`
 7. Save LoRa settings
-8. Under `Geolocation` select Geolocation Strategy as `Bluetooth+Wi-Fi+GNSS`
+8. Under `Geolocation` select Geolocation Strategy as `GNSS+Wi-Fi`
 9. Set `GNSS Max Scan Time (s)` to 120
 10. Save Geolocation settings
 11. Exit App with return arrow to trigger re-init of SenseCAP T1000-B

server/.gitignore

@@ -309,6 +309,3 @@ cython_debug/
 *.vsix
 
 config.py
-
-#docker
-docker-compose.yml

server/scripts/locationhub.service

@@ -1,22 +1,29 @@
 [Unit]
-Description=LocationHub
+Description=LocationHub Service
+Documentation=https://git.mosad.xyz/localhorst/LocationHub
 After=network.target systemd-networkd-wait-online.service mysqld.service
 
 [Service]
 Type=simple
 User=locationhub
+Group=locationhub
 WorkingDirectory=/home/locationhub/git/LocationHub/server/
-ExecStart=/usr/bin/npm run dev
+
+# Combine commands for build and start
+ExecStart=/bin/bash -c "/usr/bin/npm run build && /usr/bin/npm run start"
+
+# Restart policies
 Restart=on-failure
-StandardOutput=append:/var/log/LocationHub.log
+RestartSec=5s
-StandardError=append:/var/log/LocationHub.log
+
+# Logging configuration
+StandardOutput=journal
+StandardError=journal
+SyslogIdentifier=locationhub
+
+# Resource control (optional but helps stability)
+MemoryLimit=512M
+CPUQuota=50%
 
 [Install]
 WantedBy=multi-user.target
-```
-Activate Systemd Job
-```
-systemctl daemon-reload
-systemctl enable locationhub.service
-systemctl start locationhub.service
-systemctl status locationhub.service

server/sql/tables.sql

@@ -5,7 +5,7 @@ CREATE TABLE IF NOT EXISTS lp_ttn_end_device_uplinks (
     dev_eui VARCHAR(255),
     join_eui VARCHAR(255),
     dev_addr VARCHAR(255),
-    received_at_utc DATE,
+    received_at_utc DATE NOT NULL,
     battery NUMERIC,
     created_at_utc TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     updated_at_utc TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
@@ -16,6 +16,7 @@ CREATE TABLE IF NOT EXISTS wifi_scan (
     lp_ttn_end_device_uplinks_id UUID,
     mac VARCHAR(255),
     rssi NUMERIC,
+    scanned_at_utc TIMESTAMP NOT NULL,
     created_at_utc TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     updated_at_utc TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
     FOREIGN KEY (lp_ttn_end_device_uplinks_id) REFERENCES lp_ttn_end_device_uplinks(lp_ttn_end_device_uplinks_id)
@@ -63,6 +64,7 @@ CREATE TABLE IF NOT EXISTS location (
     gnss_longitude DOUBLE,
     ttn_gw_latitude DOUBLE,
     ttn_gw_longitude DOUBLE,
+    gnss_location_at_utc TIMESTAMP,
     created_at_utc TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     updated_at_utc TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
     FOREIGN KEY (lp_ttn_end_device_uplinks_id) REFERENCES lp_ttn_end_device_uplinks(lp_ttn_end_device_uplinks_id)

server/src/controller/ttnController.ts

@@ -42,22 +42,37 @@ router.post(
           )?.measurementValue,
         });
 
+      const messageData = message.uplink_message.decoded_payload?.messages[0];
+
+      const latitudeData = messageData?.find((e) => e.type === "Latitude");
+      const longitudeData = messageData?.find((e) => e.type === "Longitude");
+
       const gnnsLocation = {
-        latitude: message.uplink_message.decoded_payload?.messages[0].find(
+        latitude: latitudeData?.measurementValue,
-          (e) => e.type === "Latitude"
+        longitude: longitudeData?.measurementValue,
-        )?.measurementValue,
-        longitude: message.uplink_message.decoded_payload?.messages[0].find(
-          (e) => e.type === "Longitude"
-        )?.measurementValue,
       };
 
+      const gnssTimestamp = {
+        timestamp: latitudeData?.timestamp
+          ? new Date(latitudeData.timestamp)
+          : longitudeData?.timestamp
+          ? new Date(longitudeData.timestamp)
+          : undefined,
+      };
+
+      const wifiMessage =
+        message.uplink_message.decoded_payload?.messages[0].find(
+          (e) => e.type === "Wi-Fi Scan"
+        );
+
       const wifiScans =
-        message.uplink_message.decoded_payload?.messages[0]
+        wifiMessage?.measurementValue?.map((w) => ({
-          .find((e) => e.type === "Wi-Fi Scan")
-          ?.measurementValue?.map((w) => ({
           lp_ttn_end_device_uplinks_id,
           mac: w.mac,
           rssi: w.rssi,
+          scanned_at_utc: wifiMessage?.timestamp
+            ? new Date(wifiMessage.timestamp)
+            : undefined,
         })) ?? [];
 
       const ttnGatewayReceptions = message.uplink_message.rx_metadata.map(
@@ -98,6 +113,7 @@ router.post(
                   longitude: gnnsLocation.longitude,
                 }
               : undefined,
+          gnss_timestamp: gnssTimestamp.timestamp,
         });
       };
       createDatabaseEntries().then();

server/src/models/location.ts

@@ -10,6 +10,7 @@ export class Location extends Model {
   public gnss_longitude!: number;
   public ttn_gw_latitude!: number;
   public ttn_gw_longitude!: number;
+  public gnss_location_at_utc!: Date;
   public created_at_utc!: Date;
   public updated_at_utc!: Date;
 }
@@ -42,6 +43,9 @@ Location.init(
     ttn_gw_longitude: {
       type: DataTypes.NUMBER,
     },
+    gnss_location_at_utc: {
+      type: DataTypes.DATE,
+    },
     created_at_utc: {
       type: DataTypes.DATE,
       defaultValue: DataTypes.NOW,

server/src/models/wifiScan.ts

@@ -6,6 +6,7 @@ export class WifiScan extends Model {
   public wifi_scan_id!: string;
   public mac!: string;
   public rssi!: number;
+  public scanned_at_utc!: Date;
   public created_at_utc!: Date;
   public updated_at_utc!: Date;
 }
@@ -30,6 +31,11 @@ WifiScan.init(
       type: DataTypes.NUMBER,
       allowNull: false,
     },
+    scanned_at_utc: {
+      type: DataTypes.DATE,
+      defaultValue: DataTypes.NOW,
+      allowNull: false,
+    },
     created_at_utc: {
       type: DataTypes.DATE,
       defaultValue: DataTypes.NOW,

server/src/services/locationService.ts

@@ -9,6 +9,7 @@ interface CreateLocationParams {
   wifi?: Coordinates;
   gnss?: Coordinates;
   ttn_gw?: Coordinates;
+  gnss_timestamp?: Date;
 }
 
 interface CreateLocationTriangulationParams {
@@ -19,6 +20,7 @@ interface CreateLocationTriangulationParams {
   }[];
   ttn_gw: LocationSignal[];
   gnss?: Coordinates;
+  gnss_timestamp?: Date;
 }
 
 interface LocationSignal extends Coordinates {
@@ -75,6 +77,7 @@ export class LocationService {
       ttn_gw_longitude: data.ttn_gw?.longitude,
       gnss_latitude: data.gnss?.latitude,
       gnss_longitude: data.gnss?.longitude,
+      gnss_location_at_utc: data.gnss_timestamp,
     });
   }
 
@@ -91,6 +94,7 @@ export class LocationService {
       wifi: wifi_location,
       ttn_gw: gateway_location,
       gnss: data.gnss,
+      gnss_timestamp: data.gnss_timestamp,
     });
   }
 

server/src/services/wifiScanService.ts

@@ -5,12 +5,14 @@ interface CreateWifiScanParams {
   lp_ttn_end_device_uplinks_id: string;
   mac: string;
   rssi: number;
+  scanned_at_utc?: Date;
 }
 
 interface UpdateWifiScanParams {
   wifi_scan_id: string;
   mac?: string;
   rssi?: number;
+  scanned_at_utc?: Date;
 }
 
 @injectable()