Fix issue #21 and add aircraft position tracking indicators

- Fix Debian package upgrade issue by separating upgrade vs remove behavior in prerm script
- Add aircraft position tracking statistics in merger GetStatistics() method
- Update frontend to display position tracking indicators in both header and stats view
- Format Go code to maintain consistency

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Ole-Morten Duesund 2025-08-31 11:25:42 +02:00
commit 66a995b4d0
8 changed files with 124 additions and 74 deletions

View file

@ -36,7 +36,7 @@ type VRSClient struct {
errChan chan error // Error reporting channel
stopChan chan struct{} // Shutdown signal channel
wg sync.WaitGroup // Wait group for goroutine coordination
// Reconnection parameters
reconnectDelay time.Duration // Initial reconnect delay
maxReconnect time.Duration // Maximum reconnect delay (for backoff cap)
@ -116,9 +116,9 @@ func (c *VRSClient) Stop() {
// Source status is updated to reflect connection state for monitoring
func (c *VRSClient) run(ctx context.Context) {
defer c.wg.Done()
reconnectDelay := c.reconnectDelay
for {
select {
case <-ctx.Done():
@ -127,16 +127,16 @@ func (c *VRSClient) run(ctx context.Context) {
return
default:
}
// Connect to VRS JSON stream
addr := fmt.Sprintf("%s:%d", c.source.Host, c.source.Port)
fmt.Printf("Connecting to VRS JSON stream at %s (%s)...\n", addr, c.source.Name)
conn, err := net.DialTimeout("tcp", addr, 30*time.Second)
if err != nil {
fmt.Printf("Failed to connect to VRS source %s: %v\n", c.source.Name, err)
c.source.Active = false
// Exponential backoff
time.Sleep(reconnectDelay)
if reconnectDelay < c.maxReconnect {
@ -144,21 +144,21 @@ func (c *VRSClient) run(ctx context.Context) {
}
continue
}
c.conn = conn
c.source.Active = true
reconnectDelay = c.reconnectDelay // Reset backoff
fmt.Printf("Connected to VRS source %s at %s\n", c.source.Name, addr)
// Create parser for this connection
c.parser = vrs.NewParser(conn, c.source.ID)
// Start processing messages
c.wg.Add(2)
go c.readMessages()
go c.processMessages()
// Wait for disconnect
select {
case <-ctx.Done():
@ -172,7 +172,7 @@ func (c *VRSClient) run(ctx context.Context) {
c.conn.Close()
c.source.Active = false
}
// Wait for goroutines to finish
time.Sleep(1 * time.Second)
}
@ -206,7 +206,7 @@ func (c *VRSClient) readMessages() {
// and conflict resolution based on signal strength
func (c *VRSClient) processMessages() {
defer c.wg.Done()
for {
select {
case <-c.stopChan:
@ -215,7 +215,7 @@ func (c *VRSClient) processMessages() {
if msg == nil {
return
}
// Process each aircraft in the message
for _, vrsAircraft := range msg.AcList {
// Convert VRS aircraft to internal format
@ -223,7 +223,7 @@ func (c *VRSClient) processMessages() {
if aircraft == nil {
continue // Skip invalid aircraft
}
// Update merger with new data
// Note: VRS doesn't provide signal strength, so we use a default value
c.merger.UpdateAircraft(
@ -232,7 +232,7 @@ func (c *VRSClient) processMessages() {
-30.0, // Default signal strength for VRS sources
vrsAircraft.GetTimestamp(),
)
// Update source statistics
c.source.Messages++
}
@ -258,75 +258,75 @@ func (c *VRSClient) convertVRSToAircraft(vrs *vrs.VRSAircraft) *modes.Aircraft {
if err != nil {
return nil // Invalid ICAO, skip this aircraft
}
// Create aircraft structure
aircraft := &modes.Aircraft{
ICAO24: icao,
}
// Set position if available
if vrs.HasPosition() {
aircraft.Latitude = vrs.Lat
aircraft.Longitude = vrs.Long
aircraft.PositionValid = true
}
// Set altitude if available
if vrs.HasAltitude() {
aircraft.Altitude = vrs.GetAltitude()
aircraft.AltitudeValid = true
// Set barometric altitude specifically
if vrs.Alt != 0 {
aircraft.BaroAltitude = vrs.Alt
}
// Set geometric altitude if different from barometric
if vrs.GAlt != 0 {
aircraft.GeomAltitude = vrs.GAlt
aircraft.GeomAltitudeValid = true
}
}
// Set speed if available
if vrs.Spd > 0 {
aircraft.GroundSpeed = int(vrs.Spd)
aircraft.GroundSpeedValid = true
}
// Set heading/track if available
if vrs.Trak > 0 {
aircraft.Track = int(vrs.Trak)
aircraft.TrackValid = true
}
// Set vertical rate if available
if vrs.Vsi != 0 {
aircraft.VerticalRate = vrs.Vsi
aircraft.VerticalRateValid = true
}
// Set callsign if available
if vrs.Call != "" {
aircraft.Callsign = vrs.Call
aircraft.CallsignValid = true
}
// Set squawk if available
if squawk, err := vrs.GetSquawk(); err == nil {
aircraft.Squawk = fmt.Sprintf("%04X", squawk) // Convert to hex string
aircraft.SquawkValid = true
}
// Set ground status
aircraft.OnGround = vrs.IsOnGround()
aircraft.OnGroundValid = true
// Set selected altitude if available
if vrs.TAlt != 0 {
aircraft.SelectedAltitude = vrs.TAlt
}
// Set position source
switch vrs.GetPositionSource() {
case "MLAT":
@ -334,7 +334,7 @@ func (c *VRSClient) convertVRSToAircraft(vrs *vrs.VRSAircraft) *modes.Aircraft {
case "TIS-B":
aircraft.PositionTISB = true
}
// Set additional metadata if available
if vrs.Reg != "" {
aircraft.Registration = vrs.Reg
@ -345,6 +345,6 @@ func (c *VRSClient) convertVRSToAircraft(vrs *vrs.VRSAircraft) *modes.Aircraft {
if vrs.Op != "" {
aircraft.Operator = vrs.Op
}
return aircraft
}
}