Use null safety library.

2026-02-11 18:29:05 +01:00 · 2022-09-29 13:08:02 +01:00
parent 559138c5b6
commit e4e7d84bde
1037 changed files with 1244 additions and 1402 deletions
--- a/bramble-android/src/main/java/org/briarproject/bramble/api/system/AlarmListener.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/api/system/AlarmListener.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.system;

 import android.content.Intent;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface AlarmListener {
--- a/bramble-android/src/main/java/org/briarproject/bramble/api/system/AndroidWakeLock.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/api/system/AndroidWakeLock.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.system;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface AndroidWakeLock {
--- a/bramble-android/src/main/java/org/briarproject/bramble/api/system/AndroidWakeLockManager.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/api/system/AndroidWakeLockManager.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.system;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.concurrent.Executor;

--- a/bramble-android/src/main/java/org/briarproject/bramble/network/AndroidNetworkManager.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/network/AndroidNetworkManager.java
@@ -21,9 +21,9 @@ import org.briarproject.bramble.api.lifecycle.Service;
 import org.briarproject.bramble.api.network.NetworkManager;
 import org.briarproject.bramble.api.network.NetworkStatus;
 import org.briarproject.bramble.api.network.event.NetworkStatusEvent;
-import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
-import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.bramble.api.system.TaskScheduler;
+import org.briarproject.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.nullsafety.ParametersNotNullByDefault;

 import java.net.Inet4Address;
 import java.net.InetAddress;
@@ -55,8 +55,8 @@ import static java.util.concurrent.TimeUnit.SECONDS;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static java.util.logging.Logger.getLogger;
-import static org.briarproject.bramble.api.nullsafety.NullSafety.requireNonNull;
 import static org.briarproject.bramble.util.LogUtils.logException;
+import static org.briarproject.nullsafety.NullSafety.requireNonNull;

@MethodsNotNullByDefault
@ParametersNotNullByDefault
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothConnectionFactory.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothConnectionFactory.java
@@ -3,10 +3,10 @@ package org.briarproject.bramble.plugin.bluetooth;
 import android.bluetooth.BluetoothSocket;

 import org.briarproject.bramble.api.io.TimeoutMonitor;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.duplex.DuplexPlugin;
 import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
 import org.briarproject.bramble.api.system.AndroidWakeLockManager;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;

--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothPlugin.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothPlugin.java
@@ -10,8 +10,6 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;

-import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
-import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.bramble.api.plugin.Backoff;
 import org.briarproject.bramble.api.plugin.PluginCallback;
 import org.briarproject.bramble.api.plugin.PluginException;
@@ -20,6 +18,8 @@ import org.briarproject.bramble.api.system.AndroidExecutor;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.util.AndroidUtils;
 import org.briarproject.bramble.util.IoUtils;
+import org.briarproject.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.nullsafety.ParametersNotNullByDefault;

 import java.io.IOException;
 import java.security.SecureRandom;
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothPluginFactory.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothPluginFactory.java
@@ -6,7 +6,6 @@ import android.bluetooth.BluetoothSocket;
 import org.briarproject.bramble.api.event.EventBus;
 import org.briarproject.bramble.api.io.TimeoutMonitor;
 import org.briarproject.bramble.api.lifecycle.IoExecutor;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.Backoff;
 import org.briarproject.bramble.api.plugin.BackoffFactory;
 import org.briarproject.bramble.api.plugin.PluginCallback;
@@ -17,6 +16,7 @@ import org.briarproject.bramble.api.system.AndroidExecutor;
 import org.briarproject.bramble.api.system.AndroidWakeLockManager;
 import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.system.WakefulIoExecutor;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.security.SecureRandom;
 import java.util.concurrent.Executor;
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothTransportConnection.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothTransportConnection.java
@@ -3,11 +3,11 @@ package org.briarproject.bramble.plugin.bluetooth;
 import android.bluetooth.BluetoothSocket;

 import org.briarproject.bramble.api.io.TimeoutMonitor;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.Plugin;
 import org.briarproject.bramble.api.plugin.duplex.AbstractDuplexTransportConnection;
 import org.briarproject.bramble.api.system.AndroidWakeLock;
 import org.briarproject.bramble.api.system.AndroidWakeLockManager;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;
 import java.io.InputStream;
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/file/AndroidRemovableDrivePlugin.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/file/AndroidRemovableDrivePlugin.java
@@ -3,9 +3,9 @@ package org.briarproject.bramble.plugin.file;
 import android.app.Application;
 import android.net.Uri;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.PluginCallback;
 import org.briarproject.bramble.api.properties.TransportProperties;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;
 import java.io.InputStream;
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/file/AndroidRemovableDrivePluginFactory.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/file/AndroidRemovableDrivePluginFactory.java
@@ -2,11 +2,11 @@ package org.briarproject.bramble.plugin.file;

 import android.app.Application;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.PluginCallback;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.simplex.SimplexPlugin;
 import org.briarproject.bramble.api.plugin.simplex.SimplexPluginFactory;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/tcp/AndroidLanTcpPlugin.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/tcp/AndroidLanTcpPlugin.java
@@ -14,10 +14,10 @@ import org.briarproject.bramble.PoliteExecutor;
 import org.briarproject.bramble.api.Pair;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.network.event.NetworkStatusEvent;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.Backoff;
 import org.briarproject.bramble.api.plugin.PluginCallback;
 import org.briarproject.bramble.api.settings.Settings;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;
 import java.net.InetAddress;
@@ -43,13 +43,13 @@ import static java.util.Collections.list;
 import static java.util.Collections.singletonList;
 import static java.util.logging.Level.WARNING;
 import static java.util.logging.Logger.getLogger;
-import static org.briarproject.bramble.api.nullsafety.NullSafety.requireNonNull;
 import static org.briarproject.bramble.api.plugin.LanTcpConstants.DEFAULT_PREF_PLUGIN_ENABLE;
 import static org.briarproject.bramble.api.plugin.Plugin.State.ACTIVE;
 import static org.briarproject.bramble.api.plugin.Plugin.State.INACTIVE;
 import static org.briarproject.bramble.util.IoUtils.tryToClose;
 import static org.briarproject.bramble.util.LogUtils.logException;
 import static org.briarproject.bramble.util.NetworkUtils.getNetworkInterfaces;
+import static org.briarproject.nullsafety.NullSafety.requireNonNull;

@NotNullByDefault
 class AndroidLanTcpPlugin extends LanTcpPlugin {
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/tcp/AndroidLanTcpPluginFactory.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/tcp/AndroidLanTcpPluginFactory.java
@@ -4,7 +4,6 @@ import android.app.Application;

 import org.briarproject.bramble.api.event.EventBus;
 import org.briarproject.bramble.api.lifecycle.IoExecutor;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.Backoff;
 import org.briarproject.bramble.api.plugin.BackoffFactory;
 import org.briarproject.bramble.api.plugin.PluginCallback;
@@ -12,6 +11,7 @@ import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.duplex.DuplexPlugin;
 import org.briarproject.bramble.api.plugin.duplex.DuplexPluginFactory;
 import org.briarproject.bramble.api.system.WakefulIoExecutor;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.concurrent.Executor;

--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/AndroidTorPlugin.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/AndroidTorPlugin.java
@@ -7,8 +7,6 @@ import android.content.pm.PackageManager.NameNotFoundException;

 import org.briarproject.bramble.api.battery.BatteryManager;
 import org.briarproject.bramble.api.network.NetworkManager;
-import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
-import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.bramble.api.plugin.Backoff;
 import org.briarproject.bramble.api.plugin.PluginCallback;
 import org.briarproject.bramble.api.system.AndroidWakeLock;
@@ -17,6 +15,8 @@ import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.system.LocationUtils;
 import org.briarproject.bramble.api.system.ResourceProvider;
 import org.briarproject.bramble.util.AndroidUtils;
+import org.briarproject.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.nullsafety.ParametersNotNullByDefault;

 import java.io.File;
 import java.io.FileInputStream;
--- a/bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/AndroidTorPluginFactory.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/plugin/tor/AndroidTorPluginFactory.java
@@ -7,7 +7,6 @@ import org.briarproject.bramble.api.crypto.CryptoComponent;
 import org.briarproject.bramble.api.event.EventBus;
 import org.briarproject.bramble.api.lifecycle.IoExecutor;
 import org.briarproject.bramble.api.network.NetworkManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.Backoff;
 import org.briarproject.bramble.api.plugin.BackoffFactory;
 import org.briarproject.bramble.api.plugin.PluginCallback;
@@ -19,6 +18,7 @@ import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.system.LocationUtils;
 import org.briarproject.bramble.api.system.ResourceProvider;
 import org.briarproject.bramble.api.system.WakefulIoExecutor;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.File;
 import java.util.concurrent.Executor;
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/AlarmConstants.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/AlarmConstants.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.system;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 interface AlarmConstants {
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidLocationUtils.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidLocationUtils.java
@@ -6,8 +6,8 @@ import android.content.Context;
 import android.telephony.TelephonyManager;
 import android.text.TextUtils;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.system.LocationUtils;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Locale;
 import java.util.logging.Logger;
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidResourceProvider.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidResourceProvider.java
@@ -4,8 +4,8 @@ import android.app.Application;
 import android.content.Context;
 import android.content.res.Resources;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.system.ResourceProvider;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.InputStream;

--- a/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidSecureRandomProvider.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidSecureRandomProvider.java
@@ -11,7 +11,7 @@ import android.os.Parcel;
 import android.os.StrictMode;
 import android.provider.Settings;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.DataOutputStream;
 import java.io.IOException;
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidTaskScheduler.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidTaskScheduler.java
@@ -10,11 +10,11 @@ import android.os.SystemClock;

 import org.briarproject.bramble.api.Cancellable;
 import org.briarproject.bramble.api.lifecycle.Service;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.system.AlarmListener;
 import org.briarproject.bramble.api.system.AndroidWakeLockManager;
 import org.briarproject.bramble.api.system.TaskScheduler;
 import org.briarproject.bramble.api.system.Wakeful;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.ArrayList;
 import java.util.List;
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidWakeLockImpl.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidWakeLockImpl.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.system;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.system.AndroidWakeLock;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Logger;
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidWakeLockManagerImpl.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/AndroidWakeLockManagerImpl.java
@@ -5,9 +5,9 @@ import android.content.Context;
 import android.content.pm.PackageManager;
 import android.os.PowerManager;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.system.AndroidWakeLock;
 import org.briarproject.bramble.api.system.AndroidWakeLockManager;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.concurrent.Executor;
 import java.util.concurrent.ScheduledExecutorService;
@@ -18,7 +18,7 @@ import static android.content.Context.POWER_SERVICE;
 import static android.os.PowerManager.PARTIAL_WAKE_LOCK;
 import static java.util.concurrent.TimeUnit.MINUTES;
 import static java.util.concurrent.TimeUnit.SECONDS;
-import static org.briarproject.bramble.api.nullsafety.NullSafety.requireNonNull;
+import static org.briarproject.nullsafety.NullSafety.requireNonNull;

@NotNullByDefault
 class AndroidWakeLockManagerImpl implements AndroidWakeLockManager {
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/RenewableWakeLock.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/RenewableWakeLock.java
@@ -3,7 +3,7 @@ package org.briarproject.bramble.system;
 import android.os.PowerManager;
 import android.os.PowerManager.WakeLock;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.concurrent.Future;
 import java.util.concurrent.ScheduledExecutorService;
@@ -18,7 +18,7 @@ import static java.util.logging.Level.FINE;
 import static java.util.logging.Level.INFO;
 import static java.util.logging.Level.WARNING;
 import static java.util.logging.Logger.getLogger;
-import static org.briarproject.bramble.api.nullsafety.NullSafety.requireNonNull;
+import static org.briarproject.nullsafety.NullSafety.requireNonNull;

@ThreadSafe
@NotNullByDefault
--- a/bramble-android/src/main/java/org/briarproject/bramble/system/SharedWakeLock.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/system/SharedWakeLock.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.system;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.system.AndroidWakeLock;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 interface SharedWakeLock {
--- a/bramble-android/src/main/java/org/briarproject/bramble/util/AndroidUtils.java
+++ b/bramble-android/src/main/java/org/briarproject/bramble/util/AndroidUtils.java
@@ -8,7 +8,7 @@ import android.os.Looper;
 import android.provider.Settings;

 import org.briarproject.bramble.api.Pair;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.File;
 import java.io.IOException;
@@ -26,7 +26,7 @@ import static android.content.Context.MODE_PRIVATE;
 import static android.os.Build.VERSION.SDK_INT;
 import static java.lang.Runtime.getRuntime;
 import static java.util.Arrays.asList;
-import static org.briarproject.bramble.api.nullsafety.NullSafety.requireNonNull;
+import static org.briarproject.nullsafety.NullSafety.requireNonNull;

@NotNullByDefault
 public class AndroidUtils {
--- a/bramble-api/build.gradle
+++ b/bramble-api/build.gradle
@@ -7,6 +7,8 @@ apply plugin: 'witness'
 apply from: 'witness.gradle'

 dependencies {
+	api 'org.briarproject:null-safety:0.1'
+
 	implementation "com.google.dagger:dagger:$dagger_version"
 	implementation 'com.google.code.findbugs:jsr305:3.0.2'
 	implementation "com.fasterxml.jackson.core:jackson-annotations:$jackson_version"
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/Bytes.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/Bytes.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.util.StringUtils;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Arrays;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/Consumer.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/Consumer.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface Consumer<T> {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/Multiset.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/Multiset.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Collections;
 import java.util.HashMap;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/Nameable.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/Nameable.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface Nameable {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/Pair.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/Pair.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/Predicate.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/Predicate.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface Predicate<T> {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/UniqueId.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/UniqueId.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.ThreadSafe;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/WeakSingletonProvider.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/WeakSingletonProvider.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.lang.ref.WeakReference;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/account/AccountManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/account/AccountManager.java
@@ -3,7 +3,7 @@ package org.briarproject.bramble.api.account;
 import org.briarproject.bramble.api.crypto.DecryptionException;
 import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.identity.IdentityManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupHook.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupHook.java
@@ -3,9 +3,9 @@ package org.briarproject.bramble.api.cleanup;
 import org.briarproject.bramble.api.db.DatabaseComponent;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Transaction;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Collection;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupManager.java
@@ -5,9 +5,9 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DatabaseComponent;
 import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.ClientId;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;

 /**
 * The CleanupManager is responsible for tracking the cleanup deadlines of
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/event/CleanupTimerStartedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/event/CleanupTimerStartedEvent.java
@@ -1,8 +1,8 @@
 package org.briarproject.bramble.api.cleanup.event;

 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfIncomingMessageHook.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfIncomingMessageHook.java
@@ -8,10 +8,10 @@ import org.briarproject.bramble.api.db.DatabaseComponent;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Metadata;
 import org.briarproject.bramble.api.db.Transaction;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.InvalidMessageException;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.validation.IncomingMessageHook;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfMessageContext.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfMessageContext.java
@@ -1,8 +1,8 @@
 package org.briarproject.bramble.api.client;

 import org.briarproject.bramble.api.data.BdfDictionary;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Collection;
 import java.util.Collections;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfMessageValidator.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/client/BdfMessageValidator.java
@@ -4,13 +4,13 @@ import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.data.BdfList;
 import org.briarproject.bramble.api.data.MetadataEncoder;
 import org.briarproject.bramble.api.db.Metadata;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.Group;
 import org.briarproject.bramble.api.sync.InvalidMessageException;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.MessageContext;
 import org.briarproject.bramble.api.sync.validation.MessageValidator;
 import org.briarproject.bramble.api.system.Clock;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.logging.Logger;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/client/ClientHelper.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/client/ClientHelper.java
@@ -11,12 +11,12 @@ import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.mailbox.MailboxUpdate;
 import org.briarproject.bramble.api.mailbox.MailboxVersion;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.properties.TransportProperties;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.security.GeneralSecurityException;
 import java.util.Collection;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/client/ContactGroupFactory.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/client/ContactGroupFactory.java
@@ -2,9 +2,9 @@ package org.briarproject.bramble.api.client;

 import org.briarproject.bramble.api.contact.Contact;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.ClientId;
 import org.briarproject.bramble.api.sync.Group;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface ContactGroupFactory {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/connection/ConnectionManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/connection/ConnectionManager.java
@@ -2,12 +2,12 @@ package org.briarproject.bramble.api.connection;

 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.contact.PendingContactId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportConnectionReader;
 import org.briarproject.bramble.api.plugin.TransportConnectionWriter;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
 import org.briarproject.bramble.api.sync.OutgoingSessionRecord;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface ConnectionManager {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/connection/ConnectionRegistry.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/connection/ConnectionRegistry.java
@@ -2,7 +2,6 @@ package org.briarproject.bramble.api.connection;

 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.contact.PendingContactId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.PluginConfig;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.event.ConnectionClosedEvent;
@@ -12,6 +11,7 @@ import org.briarproject.bramble.api.plugin.event.ContactDisconnectedEvent;
 import org.briarproject.bramble.api.rendezvous.event.RendezvousConnectionClosedEvent;
 import org.briarproject.bramble.api.rendezvous.event.RendezvousConnectionOpenedEvent;
 import org.briarproject.bramble.api.sync.Priority;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Collection;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/connection/InterruptibleConnection.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/connection/InterruptibleConnection.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.connection;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 /**
 * A duplex sync connection that can be closed by interrupting its outgoing
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/Contact.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/Contact.java
@@ -3,7 +3,7 @@ package org.briarproject.bramble.api.contact;
 import org.briarproject.bramble.api.crypto.PublicKey;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactExchangeManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactExchangeManager.java
@@ -3,8 +3,8 @@ package org.briarproject.bramble.api.contact;
 import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.ContactExistsException;
 import org.briarproject.bramble.api.db.DbException;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactId.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactId.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.contact;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/ContactManager.java
@@ -12,7 +12,7 @@ import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.AuthorId;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.security.GeneralSecurityException;
 import java.util.Collection;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/HandshakeManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/HandshakeManager.java
@@ -2,8 +2,8 @@ package org.briarproject.bramble.api.contact;

 import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DbException;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.transport.StreamWriter;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;
 import java.io.InputStream;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/PendingContact.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/PendingContact.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.contact;

 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/PendingContactId.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/PendingContactId.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.contact;

 import org.briarproject.bramble.api.UniqueId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.ThreadSafe;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactAddedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactAddedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;

 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactAliasChangedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactAliasChangedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;

 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactRemovedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactRemovedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;

 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactVerifiedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/ContactVerifiedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;

 import org.briarproject.bramble.api.contact.ContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactAddedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactAddedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;

 import org.briarproject.bramble.api.contact.PendingContact;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactRemovedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactRemovedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.contact.event;

 import org.briarproject.bramble.api.contact.PendingContactId;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactStateChangedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/contact/event/PendingContactStateChangedEvent.java
@@ -3,7 +3,7 @@ package org.briarproject.bramble.api.contact.event;
 import org.briarproject.bramble.api.contact.PendingContactId;
 import org.briarproject.bramble.api.contact.PendingContactState;
 import org.briarproject.bramble.api.event.Event;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/AgreementPrivateKey.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/AgreementPrivateKey.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;

 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/AgreementPublicKey.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/AgreementPublicKey.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;

 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/CryptoComponent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/CryptoComponent.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;

 import org.briarproject.bramble.api.UniqueId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.security.GeneralSecurityException;
 import java.security.SecureRandom;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/DecryptionException.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/DecryptionException.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public class DecryptionException extends Exception {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyPair.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyPair.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyParser.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyParser.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.security.GeneralSecurityException;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyStrengthener.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/KeyStrengthener.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 /**
 * Interface for strengthening a password-based key, for example by using a
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PasswordStrengthEstimator.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PasswordStrengthEstimator.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface PasswordStrengthEstimator {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PrivateKey.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PrivateKey.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 /**
 * The private half of a public/private {@link KeyPair}.
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PublicKey.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/PublicKey.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 /**
 * The public half of a public/private {@link KeyPair}.
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/SignaturePrivateKey.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/SignaturePrivateKey.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;

 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/SignaturePublicKey.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/SignaturePublicKey.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;

 import org.briarproject.bramble.api.Bytes;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamDecrypter.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamDecrypter.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamDecrypterFactory.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamDecrypterFactory.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.transport.StreamContext;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.InputStream;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamEncrypter.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamEncrypter.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamEncrypterFactory.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/crypto/StreamEncrypterFactory.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.crypto;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.transport.StreamContext;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.OutputStream;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfEntry.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfEntry.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Map.Entry;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfReader.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfReader.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.IOException;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfReaderFactory.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfReaderFactory.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.InputStream;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfStringUtils.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfStringUtils.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.data;

 import org.briarproject.bramble.api.Bytes;
 import org.briarproject.bramble.api.FormatException;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.List;
 import java.util.Map;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfWriterFactory.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/data/BdfWriterFactory.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.data;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.OutputStream;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/data/MetadataEncoder.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/data/MetadataEncoder.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.data;

 import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.db.Metadata;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface MetadataEncoder {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/data/MetadataParser.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/data/MetadataParser.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.data;

 import org.briarproject.bramble.api.FormatException;
 import org.briarproject.bramble.api.db.Metadata;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface MetadataParser {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/db/DatabaseComponent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/db/DatabaseComponent.java
@@ -10,7 +10,6 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.identity.Author;
 import org.briarproject.bramble.api.identity.AuthorId;
 import org.briarproject.bramble.api.identity.Identity;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.settings.Settings;
 import org.briarproject.bramble.api.sync.Ack;
@@ -27,6 +26,7 @@ import org.briarproject.bramble.api.sync.validation.MessageState;
 import org.briarproject.bramble.api.transport.KeySetId;
 import org.briarproject.bramble.api.transport.TransportKeySet;
 import org.briarproject.bramble.api.transport.TransportKeys;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.util.Collection;
 import java.util.List;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/db/DatabaseConfig.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/db/DatabaseConfig.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.db;

 import org.briarproject.bramble.api.crypto.KeyStrengthener;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import java.io.File;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/db/DbCallable.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/db/DbCallable.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.db;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface DbCallable<R, E extends Exception> {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/db/DbRunnable.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/db/DbRunnable.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.db;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface DbRunnable<E extends Exception> {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/db/NullableDbCallable.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/db/NullableDbCallable.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.db;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/db/TransactionManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/db/TransactionManager.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.db;

 import org.briarproject.bramble.api.event.EventExecutor;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/event/EventBus.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/event/EventBus.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.event;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface EventBus {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/event/EventListener.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/event/EventListener.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.event;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 /**
 * An interface for receiving notifications when events occur.
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/Author.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/Author.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity;

 import org.briarproject.bramble.api.Nameable;
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/AuthorFactory.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/AuthorFactory.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.identity;

 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface AuthorFactory {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/AuthorId.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/AuthorId.java
@@ -1,7 +1,7 @@
 package org.briarproject.bramble.api.identity;

 import org.briarproject.bramble.api.UniqueId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.ThreadSafe;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/Identity.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/Identity.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity;

 import org.briarproject.bramble.api.crypto.PrivateKey;
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/IdentityManager.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/IdentityManager.java
@@ -6,7 +6,7 @@ import org.briarproject.bramble.api.crypto.SecretKey;
 import org.briarproject.bramble.api.db.DbException;
 import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

@NotNullByDefault
 public interface IdentityManager {
--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/LocalAuthor.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/LocalAuthor.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity;

 import org.briarproject.bramble.api.crypto.PrivateKey;
 import org.briarproject.bramble.api.crypto.PublicKey;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/event/IdentityAddedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/event/IdentityAddedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity.event;

 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/identity/event/IdentityRemovedEvent.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/identity/event/IdentityRemovedEvent.java
@@ -2,7 +2,7 @@ package org.briarproject.bramble.api.identity.event;

 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.identity.AuthorId;
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/KeyAgreementConnection.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/KeyAgreementConnection.java
@@ -1,8 +1,8 @@
 package org.briarproject.bramble.api.keyagreement;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.plugin.TransportId;
 import org.briarproject.bramble.api.plugin.duplex.DuplexTransportConnection;
+import org.briarproject.nullsafety.NotNullByDefault;

 import javax.annotation.concurrent.Immutable;

--- a/bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/KeyAgreementTask.java
+++ b/bramble-api/src/main/java/org/briarproject/bramble/api/keyagreement/KeyAgreementTask.java
@@ -1,6 +1,6 @@
 package org.briarproject.bramble.api.keyagreement;

-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.nullsafety.NotNullByDefault;

 /**
 * A task for conducting a key agreement with a remote peer.
--- a/Show More
+++ b/Show More