Quiet option

README.md

@@ -17,13 +17,15 @@ Replace ```lat``` and ```lon``` with your location, and it will display all ADSB
 
 ### Advanced usage
 ```
-java -jar MavADSB.jar lat lon radius interval
+java -jar MavADSB.jar [-q] lat lon radius interval
 ```
 
 Replace ```radius``` with the polling radius around  ```lat,lon``` (up to 250) in nautical miles. Optional
 
 Replace ```interval``` with the polling interval in milliseconds (minimum 1000) in milliseconds. Optional
 
+Include ```-q``` (dash lower case letter Q) anywhere on the command line to suppress most messages. Optional
+
 ### Mission Planner integration
 After running the Jar file, please open Mission Planner and go to config tab -> Planner and look for the "Adsb" checkbox. Enable this and restart Mission Planner
 

src/main/kotlin/Main.kt

@@ -7,22 +7,25 @@ private const val BASE_URL = "https://api.adsb.one/v2/"
 private val server: SBSServer = SBSServer()
 private var radius = 250
 private var polling_delay = 1000L
+private var quiet = false
 
 fun main(args: Array<String>) {
-    val lat = args[0]
-    val lon = args[1]
-    if (args.size > 2) radius = 250.coerceAtMost((args[2].toIntOrNull() ?: radius))
-    if (args.size > 3) polling_delay = 1000L.coerceAtLeast(args[3].toLongOrNull() ?: polling_delay)
+    val positional_args = args.dropWhile { it == "-q" }.toTypedArray()
+    (positional_args.size < args.size).also { quiet = it }
+    val lat = positional_args[0]
+    val lon = positional_args[1]
+    if (positional_args.size > 2) radius = 250.coerceAtMost((positional_args[2].toIntOrNull() ?: radius))
+    if (positional_args.size > 3) polling_delay = 1000L.coerceAtLeast(positional_args[3].toLongOrNull() ?: polling_delay)
     println("Querying ADSB ${radius}nm around ($lat, $lon) every ${polling_delay}ms")
     server.start()
     val client = OkHttpClient()
     val request = Request.Builder().url("${BASE_URL}point/$lat/$lon/$radius").build()
     Timer().schedule(object : TimerTask() {
         override fun run() {
             try {
-                if (server.clients.isNotEmpty()) client.newCall(request).execute().body?.let { server.sendData(Gson().fromJson(it.string(), ADSBData::class.java)) }
+                if (server.clients.isNotEmpty()) client.newCall(request).execute().body?.let { server.sendData(Gson().fromJson(it.string(), ADSBData::class.java), quiet) }
             } catch (e: Exception) {
-                println("Failed to query ADSB data: ${e.message}")
+                if (!quiet) println("Failed to query ADSB data: ${e.message}")
             }
         }
     }, 0, polling_delay)

src/main/kotlin/SBSServer.kt

@@ -18,7 +18,7 @@ class SBSServer {
         }.start()
     }
 
-    fun sendData(data: ADSBData) {
+    fun sendData(data: ADSBData, quiet: Boolean) {
         Thread {
             val iterator = clients.iterator()
             while (iterator.hasNext()) {
@@ -34,7 +34,8 @@ class SBSServer {
                                 altitude = ac.getAltitude(),
                                 lat = ac.lat,
                                 lon = ac.lon,
-                                squawk = ac.squawk
+                                squawk = ac.squawk,
+                                quiet = quiet
                             )
                         )
                         writer.println(
@@ -44,7 +45,8 @@ class SBSServer {
                                 flightId = ac.getFlight(),
                                 groundSpeed = ac.gs,
                                 track = ac.track,
-                                squawk = ac.squawk
+                                squawk = ac.squawk,
+                                quiet = quiet
                             )
                         )
                         writer.flush()
@@ -74,7 +76,8 @@ class SBSServer {
         track: Double = 0.0,
         lat: Double = 0.0,
         lon: Double = 0.0,
-        squawk: String = ""
+        squawk: String = "",
+        quiet: Boolean = false
     ): String {
         val builder = StringBuilder()
         // The below basic data fields are standard for all messages (Field 2 used only for MSG)
@@ -103,7 +106,7 @@ class SBSServer {
         builder.append("0") // isOnGround
 
         val message = builder.toString()
-        println(message)
+        if (!quiet) println(message)
         return message
     }