latency

src/main/java/eu/m724/wtapi/provider/impl/openweathermap/OpenWeatherMapProvider.java

@@ -9,7 +9,6 @@ import java.net.http.HttpResponse.BodyHandlers;
 import java.util.ArrayList;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.CompletionException;
-import java.util.concurrent.ExecutionException;
 
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;

src/main/java/eu/m724/wtapi/thunder/ThunderProvider.java

@@ -7,6 +7,10 @@ import eu.m724.wtapi.provider.exception.ProviderException;
 
 public abstract class ThunderProvider {
 
+	/**
+	 * initialize and test provider
+	 * @throws ProviderException
+	 */
 	public abstract void init() throws ProviderException;
 	
 	/**
@@ -32,4 +36,10 @@ public abstract class ThunderProvider {
 	 * @return delay in ms
 	 */
 	public abstract int getDelay();
+	
+	/**
+	 * this is not {@link/getDelay}
+	 * @return latency to api in ms
+	 */
+	public abstract long getLatency();
 }

src/main/java/eu/m724/wtapi/thunder/impl/blitzortung/BlitzortungProvider.java

@@ -15,6 +15,9 @@ public class BlitzortungProvider extends ThunderProvider {
 
 	private long reconnectPending;
 	private final int delay = 10000;
+	
+	private long latency;
+	private int latencySamplesCount;
 
 	@Override
 	public void init() throws ProviderException {
@@ -75,7 +78,17 @@ public class BlitzortungProvider extends ThunderProvider {
 	}
 	
 	void submitStrike(Coordinates coordinates, long timestamp) {
+		long now = System.currentTimeMillis();
+		long delay = now - timestamp;
+		
+		latency += (delay - latency) / ++latencySamplesCount;
+		
 		strikes.add(new TimedStrike(timestamp, coordinates));
 	}
 
+	@Override
+	public long getLatency() {
+		return latency;
+	}
+
 }

src/test/java/eu/m724/wtapi/thunder/BlitzortungTest.java

@@ -9,14 +9,13 @@ import eu.m724.wtapi.thunder.impl.blitzortung.BlitzortungProvider;
 
 public class BlitzortungTest {
 	@Test
-	public void lightningMapsTest() throws InterruptedException {
+	public void blitzortungTest() throws InterruptedException {
 		ArrayList<Coordinates> coordinatesList = new ArrayList<>();
 		
 		ThunderProvider provider = new BlitzortungProvider();
 		
 		provider.registerStrikeHandler(coordinates -> {
 			coordinatesList.add(coordinates);
-			System.out.printf("%f %f\n", coordinates.latitude, coordinates.longitude);
 		});
 		
 		provider.init();
@@ -25,12 +24,14 @@ public class BlitzortungTest {
 		
 		for (int i=0; i < 100; i++) {
 			provider.tick();
+			int size = coordinatesList.size();
+			if (size > 0)
+				System.out.printf("Last from tick: %f %f (total %d)\n", coordinatesList.get(size-1).latitude, coordinatesList.get(size-1).longitude, size);
 			Thread.sleep(100);
 		}
 		
 		System.out.printf("Strikes in the last 10s: %d\n", coordinatesList.size());
-		if (coordinatesList.size() > 0) // lightningmaps can be unreliable
-			System.out.printf("%f %f", coordinatesList.get(0).latitude, coordinatesList.get(0).longitude);
+		System.out.printf("Latency: %dms\n", provider.getLatency());
 		
 	}
 }

src/test/java/eu/m724/wtapi/thunder/MockThunderProvider.java

@@ -69,4 +69,9 @@ public class MockThunderProvider extends ThunderProvider {
 		return 10000;
 	}
 
+	@Override
+	public long getLatency() {
+		return 690;
+	}
+
 }

src/test/java/eu/m724/wtapi/thunder/ThunderProviderTest.java

@@ -22,13 +22,16 @@ public class ThunderProviderTest {
 		
 		for (int i=0; i < 50; i++) {
 			provider.tick();
+			int size = coordinatesList.size();
+			if (size > 0)
+				System.out.printf("Last from tick: %f %f (total %d)\n", coordinatesList.get(size-1).latitude, coordinatesList.get(size-1).longitude, size);
 			Thread.sleep(50);
 		}
 		
 		provider.stop();
 		
-		System.out.printf("Strikes in the last 5s: %d\n", coordinatesList.size());
-		System.out.printf("%f %f", coordinatesList.get(0).latitude, coordinatesList.get(0).longitude);
+		System.out.printf("Strikes in the last 2.5s: %d\n", coordinatesList.size());
+		System.out.printf("Latency: %dms\n", provider.getLatency());
 		
 		assert coordinatesList.size() == 25;
 	}