Check network status periodically on JavaSE.

bramble-java/src/main/java/org/briarproject/bramble/BrambleJavaEagerSingletons.java

@@ -0,0 +1,17 @@
+package org.briarproject.bramble;
+
+import org.briarproject.bramble.network.JavaNetworkModule;
+import org.briarproject.nullsafety.NotNullByDefault;
+
+@NotNullByDefault
+public interface BrambleJavaEagerSingletons {
+
+	void inject(JavaNetworkModule.EagerSingletons init);
+
+	class Helper {
+
+		public static void injectEagerSingletons(BrambleJavaEagerSingletons c) {
+			c.inject(new JavaNetworkModule.EagerSingletons());
+		}
+	}
+}

bramble-java/src/main/java/org/briarproject/bramble/network/JavaNetworkManager.java

@@ -1,33 +1,47 @@
 package org.briarproject.bramble.network;
 
+import org.briarproject.bramble.api.event.EventBus;
+import org.briarproject.bramble.api.lifecycle.IoExecutor;
+import org.briarproject.bramble.api.lifecycle.Service;
 import org.briarproject.bramble.api.network.NetworkManager;
 import org.briarproject.bramble.api.network.NetworkStatus;
-import org.briarproject.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.bramble.api.network.event.NetworkStatusEvent;
-import org.briarproject.nullsafety.ParametersNotNullByDefault;
+import org.briarproject.bramble.api.system.TaskScheduler;
+import org.briarproject.nullsafety.NotNullByDefault;
 
 import java.net.Inet4Address;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
+import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import javax.inject.Inject;
 
 import static java.util.Collections.list;
+import static java.util.concurrent.TimeUnit.MINUTES;
 import static java.util.logging.Level.WARNING;
 import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.NetworkUtils.getNetworkInterfaces;
 
-@MethodsNotNullByDefault
+@NotNullByDefault
-@ParametersNotNullByDefault
+class JavaNetworkManager implements NetworkManager, Service {
-class JavaNetworkManager implements NetworkManager {
 
 	private static final Logger LOG =
 			getLogger(JavaNetworkManager.class.getName());
 
+	private final TaskScheduler scheduler;
+	private final Executor ioExecutor;
+	private final EventBus eventBus;
+
 	@Inject
-	JavaNetworkManager() {
+	JavaNetworkManager(TaskScheduler scheduler,
+			@IoExecutor Executor ioExecutor,
+			EventBus eventBus) {
+		this.scheduler = scheduler;
+		this.ioExecutor = ioExecutor;
+		this.eventBus = eventBus;
 	}
 
 	@Override
@@ -51,4 +65,17 @@ class JavaNetworkManager implements NetworkManager {
 		return new NetworkStatus(connected, false, !hasIpv4 && hasIpv6Unicast);
 	}
 
+	private void broadcastNetworkStatus() {
+		eventBus.broadcast(new NetworkStatusEvent(getNetworkStatus()));
+	}
+
+	@Override
+	public void startService() {
+		scheduler.scheduleWithFixedDelay(this::broadcastNetworkStatus,
+				ioExecutor, 0, 1, MINUTES);
+	}
+
+	@Override
+	public void stopService() {
+	}
 }

bramble-java/src/main/java/org/briarproject/bramble/network/JavaNetworkModule.java

@@ -1,7 +1,9 @@
 package org.briarproject.bramble.network;
 
+import org.briarproject.bramble.api.lifecycle.LifecycleManager;
 import org.briarproject.bramble.api.network.NetworkManager;
 
+import javax.inject.Inject;
 import javax.inject.Singleton;
 
 import dagger.Module;
@@ -10,9 +12,16 @@ import dagger.Provides;
 @Module
 public class JavaNetworkModule {
 
+	public static class EagerSingletons {
+		@Inject
+		NetworkManager networkManager;
+	}
+
 	@Provides
 	@Singleton
-	NetworkManager provideNetworkManager(JavaNetworkManager networkManager) {
+	NetworkManager provideNetworkManager(LifecycleManager lifecycleManager,
+			JavaNetworkManager networkManager) {
+		lifecycleManager.registerService(networkManager);
 		return networkManager;
 	}
 }

briar-headless/src/main/java/org/briarproject/briar/headless/BriarHeadlessApp.kt

@@ -3,6 +3,7 @@ package org.briarproject.briar.headless
 import dagger.Component
 import org.briarproject.bramble.BrambleCoreEagerSingletons
 import org.briarproject.bramble.BrambleCoreModule
+import org.briarproject.bramble.BrambleJavaEagerSingletons
 import org.briarproject.bramble.BrambleJavaModule
 import org.briarproject.briar.BriarCoreEagerSingletons
 import org.briarproject.briar.BriarCoreModule
@@ -19,7 +20,7 @@ import javax.inject.Singleton
 )
 @Singleton
 internal interface BriarHeadlessApp : BrambleCoreEagerSingletons, BriarCoreEagerSingletons,
-    HeadlessEagerSingletons {
+    BrambleJavaEagerSingletons, HeadlessEagerSingletons {
 
     fun getRouter(): Router
 

briar-headless/src/main/java/org/briarproject/briar/headless/Main.kt

@@ -8,6 +8,7 @@ import com.github.ajalt.clikt.parameters.options.option
 import com.github.ajalt.clikt.parameters.types.int
 import org.bouncycastle.util.encoders.Base64.toBase64String
 import org.briarproject.bramble.BrambleCoreEagerSingletons
+import org.briarproject.bramble.BrambleJavaEagerSingletons
 import org.briarproject.bramble.util.OsUtils.isLinux
 import org.briarproject.bramble.util.OsUtils.isMac
 import org.briarproject.briar.BriarCoreEagerSingletons
@@ -77,6 +78,7 @@ private class Main : CliktCommand(
         // We need to load the eager singletons directly after making the
         // dependency graphs
         BrambleCoreEagerSingletons.Helper.injectEagerSingletons(app)
+        BrambleJavaEagerSingletons.Helper.injectEagerSingletons(app)
         BriarCoreEagerSingletons.Helper.injectEagerSingletons(app)
         HeadlessEagerSingletons.Helper.injectEagerSingletons(app)
 

briar-headless/src/test/java/org/briarproject/briar/headless/BriarHeadlessTestApp.kt

@@ -3,6 +3,7 @@ package org.briarproject.briar.headless
 import dagger.Component
 import org.briarproject.bramble.BrambleCoreEagerSingletons
 import org.briarproject.bramble.BrambleCoreModule
+import org.briarproject.bramble.BrambleJavaEagerSingletons
 import org.briarproject.bramble.BrambleJavaModule
 import org.briarproject.bramble.api.crypto.CryptoComponent
 import org.briarproject.briar.BriarCoreEagerSingletons
@@ -20,7 +21,7 @@ import javax.inject.Singleton
 )
 @Singleton
 internal interface BriarHeadlessTestApp : BrambleCoreEagerSingletons, BriarCoreEagerSingletons,
-    HeadlessEagerSingletons {
+    BrambleJavaEagerSingletons, HeadlessEagerSingletons {
 
     fun getRouter(): Router
 

briar-headless/src/test/java/org/briarproject/briar/headless/IntegrationTest.kt

@@ -8,6 +8,7 @@ import okhttp3.Request
 import okhttp3.RequestBody.Companion.toRequestBody
 import okhttp3.Response
 import org.briarproject.bramble.BrambleCoreEagerSingletons
+import org.briarproject.bramble.BrambleJavaEagerSingletons
 import org.briarproject.bramble.api.crypto.CryptoComponent
 import org.briarproject.briar.BriarCoreEagerSingletons
 import org.briarproject.briar.api.test.TestDataCreator
@@ -38,6 +39,7 @@ abstract class IntegrationTest {
             .headlessTestModule(HeadlessTestModule(dataDir))
             .build()
         BrambleCoreEagerSingletons.Helper.injectEagerSingletons(app)
+        BrambleJavaEagerSingletons.Helper.injectEagerSingletons(app)
         BriarCoreEagerSingletons.Helper.injectEagerSingletons(app)
         HeadlessEagerSingletons.Helper.injectEagerSingletons(app)
         router = app.getRouter()