Move lookup of latest conversation timestamp to core for blog and forum sharing.

briar-android/src/main/java/org/briarproject/briar/android/sharing/ShareBlogControllerImpl.java

@@ -10,11 +10,9 @@ import org.briarproject.bramble.api.db.NoSuchGroupException;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
-import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.briar.android.contactselection.ContactSelectorControllerImpl;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
 import org.briarproject.briar.api.blog.BlogSharingManager;
-import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.identity.AuthorManager;
 
 import java.util.Collection;
@@ -26,6 +24,7 @@ import javax.annotation.concurrent.Immutable;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
+import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
@@ -34,22 +33,17 @@ class ShareBlogControllerImpl extends ContactSelectorControllerImpl
 		implements ShareBlogController {
 
 	private final static Logger LOG =
-			Logger.getLogger(ShareBlogControllerImpl.class.getName());
+			getLogger(ShareBlogControllerImpl.class.getName());
 
-	private final ConversationManager conversationManager;
 	private final BlogSharingManager blogSharingManager;
-	private final Clock clock;
 
 	@Inject
 	ShareBlogControllerImpl(@DatabaseExecutor Executor dbExecutor,
 			LifecycleManager lifecycleManager, ContactManager contactManager,
 			AuthorManager authorManager,
-			ConversationManager conversationManager,
-			BlogSharingManager blogSharingManager, Clock clock) {
+			BlogSharingManager blogSharingManager) {
 		super(dbExecutor, lifecycleManager, contactManager, authorManager);
-		this.conversationManager = conversationManager;
 		this.blogSharingManager = blogSharingManager;
-		this.clock = clock;
 	}
 
 	@Override
@@ -64,10 +58,7 @@ class ShareBlogControllerImpl extends ContactSelectorControllerImpl
 			try {
 				for (ContactId c : contacts) {
 					try {
-						long time = Math.max(clock.currentTimeMillis(),
-								conversationManager.getGroupCount(c)
-										.getLatestMsgTime() + 1);
-						blogSharingManager.sendInvitation(g, c, text, time);
+						blogSharingManager.sendInvitation(g, c, text);
 					} catch (NoSuchContactException | NoSuchGroupException e) {
 						logException(LOG, WARNING, e);
 					}

briar-android/src/main/java/org/briarproject/briar/android/sharing/ShareForumControllerImpl.java

@@ -10,10 +10,8 @@ import org.briarproject.bramble.api.db.NoSuchGroupException;
 import org.briarproject.bramble.api.lifecycle.LifecycleManager;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
-import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.briar.android.contactselection.ContactSelectorControllerImpl;
 import org.briarproject.briar.android.controller.handler.ExceptionHandler;
-import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.forum.ForumSharingManager;
 import org.briarproject.briar.api.identity.AuthorManager;
 
@@ -26,6 +24,7 @@ import javax.annotation.concurrent.Immutable;
 import javax.inject.Inject;
 
 import static java.util.logging.Level.WARNING;
+import static java.util.logging.Logger.getLogger;
 import static org.briarproject.bramble.util.LogUtils.logException;
 
 @Immutable
@@ -34,22 +33,17 @@ class ShareForumControllerImpl extends ContactSelectorControllerImpl
 		implements ShareForumController {
 
 	private final static Logger LOG =
-			Logger.getLogger(ShareForumControllerImpl.class.getName());
+			getLogger(ShareForumControllerImpl.class.getName());
 
-	private final ConversationManager conversationManager;
 	private final ForumSharingManager forumSharingManager;
-	private final Clock clock;
 
 	@Inject
 	ShareForumControllerImpl(@DatabaseExecutor Executor dbExecutor,
 			LifecycleManager lifecycleManager, ContactManager contactManager,
 			AuthorManager authorManager,
-			ConversationManager conversationManager,
-			ForumSharingManager forumSharingManager, Clock clock) {
+			ForumSharingManager forumSharingManager) {
 		super(dbExecutor, lifecycleManager, contactManager, authorManager);
-		this.conversationManager = conversationManager;
 		this.forumSharingManager = forumSharingManager;
-		this.clock = clock;
 	}
 
 	@Override
@@ -64,10 +58,7 @@ class ShareForumControllerImpl extends ContactSelectorControllerImpl
 			try {
 				for (ContactId c : contacts) {
 					try {
-						long time = Math.max(clock.currentTimeMillis(),
-								conversationManager.getGroupCount(c)
-										.getLatestMsgTime() + 1);
-						forumSharingManager.sendInvitation(g, c, text, time);
+						forumSharingManager.sendInvitation(g, c, text);
 					} catch (NoSuchContactException | NoSuchGroupException e) {
 						logException(LOG, WARNING, e);
 					}

briar-api/src/main/java/org/briarproject/briar/api/conversation/ConversationManager.java

@@ -50,7 +50,7 @@ public interface ConversationManager {
 
 	/**
 	 * Returns a timestamp for an outgoing message, which is later than the
-	 * timestamp of any visible message sent or received so far.
+	 * timestamp of any message in the conversation with the given contact.
 	 */
 	long getTimestampForOutgoingMessage(Transaction txn, ContactId c)
 			throws DbException;

briar-api/src/main/java/org/briarproject/briar/api/sharing/SharingManager.java

@@ -22,7 +22,7 @@ public interface SharingManager<S extends Shareable>
 	 * including optional text.
 	 */
 	void sendInvitation(GroupId shareableId, ContactId contactId,
-			@Nullable String text, long timestamp) throws DbException;
+			@Nullable String text) throws DbException;
 
 	/**
 	 * Responds to a pending group invitation

briar-core/src/main/java/org/briarproject/briar/sharing/BlogProtocolEngineImpl.java

@@ -9,7 +9,6 @@ import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.MessageId;
-import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.versioning.ClientVersioningManager;
 import org.briarproject.briar.api.autodelete.AutoDeleteManager;
 import org.briarproject.briar.api.blog.Blog;
@@ -19,6 +18,7 @@ import org.briarproject.briar.api.blog.BlogSharingManager;
 import org.briarproject.briar.api.blog.event.BlogInvitationRequestReceivedEvent;
 import org.briarproject.briar.api.blog.event.BlogInvitationResponseReceivedEvent;
 import org.briarproject.briar.api.client.MessageTracker;
+import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.conversation.ConversationRequest;
 
 import javax.annotation.concurrent.Immutable;
@@ -41,13 +41,14 @@ class BlogProtocolEngineImpl extends ProtocolEngineImpl<Blog> {
 			MessageParser<Blog> messageParser,
 			MessageTracker messageTracker,
 			AutoDeleteManager autoDeleteManager,
-			Clock clock,
+			ConversationManager conversationManager,
 			BlogManager blogManager,
 			InvitationFactory<Blog, BlogInvitationResponse> invitationFactory) {
 		super(db, clientHelper, clientVersioningManager, messageEncoder,
-				messageParser, messageTracker, autoDeleteManager, clock,
-				BlogSharingManager.CLIENT_ID, BlogSharingManager.MAJOR_VERSION,
-				BlogManager.CLIENT_ID, BlogManager.MAJOR_VERSION);
+				messageParser, messageTracker, autoDeleteManager,
+				conversationManager, BlogSharingManager.CLIENT_ID,
+				BlogSharingManager.MAJOR_VERSION, BlogManager.CLIENT_ID,
+				BlogManager.MAJOR_VERSION);
 		this.blogManager = blogManager;
 		this.invitationFactory = invitationFactory;
 	}

briar-core/src/main/java/org/briarproject/briar/sharing/ForumProtocolEngineImpl.java

@@ -9,10 +9,10 @@ import org.briarproject.bramble.api.db.Transaction;
 import org.briarproject.bramble.api.event.Event;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.MessageId;
-import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.versioning.ClientVersioningManager;
 import org.briarproject.briar.api.autodelete.AutoDeleteManager;
 import org.briarproject.briar.api.client.MessageTracker;
+import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.conversation.ConversationRequest;
 import org.briarproject.briar.api.forum.Forum;
 import org.briarproject.briar.api.forum.ForumInvitationResponse;
@@ -41,14 +41,14 @@ class ForumProtocolEngineImpl extends ProtocolEngineImpl<Forum> {
 			MessageParser<Forum> messageParser,
 			MessageTracker messageTracker,
 			AutoDeleteManager autoDeleteManager,
-			Clock clock,
+			ConversationManager conversationManager,
 			ForumManager forumManager,
 			InvitationFactory<Forum, ForumInvitationResponse> invitationFactory) {
 		super(db, clientHelper, clientVersioningManager, messageEncoder,
-				messageParser, messageTracker, autoDeleteManager, clock,
-				ForumSharingManager.CLIENT_ID,
-				ForumSharingManager.MAJOR_VERSION,
-				ForumManager.CLIENT_ID, ForumManager.MAJOR_VERSION);
+				messageParser, messageTracker, autoDeleteManager,
+				conversationManager, ForumSharingManager.CLIENT_ID,
+				ForumSharingManager.MAJOR_VERSION, ForumManager.CLIENT_ID,
+				ForumManager.MAJOR_VERSION);
 		this.forumManager = forumManager;
 		this.invitationFactory = invitationFactory;
 	}

briar-core/src/main/java/org/briarproject/briar/sharing/ProtocolEngine.java

@@ -12,7 +12,7 @@ import javax.annotation.Nullable;
 interface ProtocolEngine<S extends Shareable> {
 
 	Session onInviteAction(Transaction txn, Session session,
-			@Nullable String text, long timestamp) throws DbException;
+			@Nullable String text) throws DbException;
 
 	Session onAcceptAction(Transaction txn, Session session) throws DbException;
 

briar-core/src/main/java/org/briarproject/briar/sharing/ProtocolEngineImpl.java

@@ -16,11 +16,11 @@ import org.briarproject.bramble.api.sync.Group.Visibility;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.Message;
 import org.briarproject.bramble.api.sync.MessageId;
-import org.briarproject.bramble.api.system.Clock;
 import org.briarproject.bramble.api.versioning.ClientVersioningManager;
 import org.briarproject.briar.api.autodelete.AutoDeleteManager;
 import org.briarproject.briar.api.client.MessageTracker;
 import org.briarproject.briar.api.client.ProtocolStateException;
+import org.briarproject.briar.api.conversation.ConversationManager;
 import org.briarproject.briar.api.sharing.Shareable;
 import org.briarproject.briar.api.sharing.event.ContactLeftShareableEvent;
 
@@ -29,6 +29,7 @@ import java.util.Map;
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
 
+import static java.lang.Math.max;
 import static org.briarproject.bramble.api.sync.Group.Visibility.INVISIBLE;
 import static org.briarproject.bramble.api.sync.Group.Visibility.SHARED;
 import static org.briarproject.bramble.api.sync.Group.Visibility.VISIBLE;
@@ -58,7 +59,7 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 	private final MessageEncoder messageEncoder;
 	private final MessageTracker messageTracker;
 	private final AutoDeleteManager autoDeleteManager;
-	private final Clock clock;
+	private final ConversationManager conversationManager;
 	private final ClientId sharingClientId, shareableClientId;
 	private final int sharingClientMajorVersion, shareableClientMajorVersion;
 
@@ -70,7 +71,7 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 			MessageParser<S> messageParser,
 			MessageTracker messageTracker,
 			AutoDeleteManager autoDeleteManager,
-			Clock clock,
+			ConversationManager conversationManager,
 			ClientId sharingClientId,
 			int sharingClientMajorVersion,
 			ClientId shareableClientId,
@@ -82,7 +83,7 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 		this.messageParser = messageParser;
 		this.messageTracker = messageTracker;
 		this.autoDeleteManager = autoDeleteManager;
-		this.clock = clock;
+		this.conversationManager = conversationManager;
 		this.sharingClientId = sharingClientId;
 		this.sharingClientMajorVersion = sharingClientMajorVersion;
 		this.shareableClientId = shareableClientId;
@@ -91,10 +92,10 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 
 	@Override
 	public Session onInviteAction(Transaction txn, Session s,
-			@Nullable String text, long timestamp) throws DbException {
+			@Nullable String text) throws DbException {
 		switch (s.getState()) {
 			case START:
-				return onLocalInvite(txn, s, text, timestamp);
+				return onLocalInvite(txn, s, text);
 			case LOCAL_INVITED:
 			case REMOTE_INVITED:
 			case SHARING:
@@ -107,9 +108,9 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 	}
 
 	private Session onLocalInvite(Transaction txn, Session s,
-			@Nullable String text, long timestamp) throws DbException {
+			@Nullable String text) throws DbException {
 		// Send an INVITE message
-		Message sent = sendInviteMessage(txn, s, text, timestamp);
+		Message sent = sendInviteMessage(txn, s, text);
 		// Track the message
 		messageTracker.trackOutgoingMessage(txn, sent);
 		// Make the shareable visible to the contact
@@ -125,7 +126,7 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 	}
 
 	private Message sendInviteMessage(Transaction txn, Session s,
-			@Nullable String text, long timestamp) throws DbException {
+			@Nullable String text) throws DbException {
 		Group g = db.getGroup(txn, s.getShareableId());
 		BdfList descriptor;
 		try {
@@ -133,7 +134,7 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 		} catch (FormatException e) {
 			throw new DbException(e); // Invalid group descriptor
 		}
-		long localTimestamp = Math.max(timestamp, getLocalTimestamp(s));
+		long localTimestamp = getLocalTimestamp(txn, s);
 		Message m;
 		ContactId c = getContactId(txn, s.getContactGroupId());
 		if (contactSupportsAutoDeletion(txn, c)) {
@@ -201,16 +202,17 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 	private Message sendAcceptMessage(Transaction txn, Session s)
 			throws DbException {
 		Message m;
+		long localTimestamp = getLocalTimestamp(txn, s);
 		ContactId c = getContactId(txn, s.getContactGroupId());
 		if (contactSupportsAutoDeletion(txn, c)) {
 			long timer = autoDeleteManager.getAutoDeleteTimer(txn, c);
 			m = messageEncoder.encodeAcceptMessage(s.getContactGroupId(),
-					s.getShareableId(), getLocalTimestamp(s),
+					s.getShareableId(), localTimestamp,
 					s.getLastLocalMessageId(), timer);
 			sendMessage(txn, m, ACCEPT, s.getShareableId(), true, timer);
 		} else {
 			m = messageEncoder.encodeAcceptMessage(s.getContactGroupId(),
-					s.getShareableId(), getLocalTimestamp(s),
+					s.getShareableId(), localTimestamp,
 					s.getLastLocalMessageId());
 			sendMessage(txn, m, ACCEPT, s.getShareableId(), true,
 					NO_AUTO_DELETE_TIMER);
@@ -254,16 +256,17 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 	private Message sendDeclineMessage(Transaction txn, Session s)
 			throws DbException {
 		Message m;
+		long localTimestamp = getLocalTimestamp(txn, s);
 		ContactId c = getContactId(txn, s.getContactGroupId());
 		if (contactSupportsAutoDeletion(txn, c)) {
 			long timer = autoDeleteManager.getAutoDeleteTimer(txn, c);
 			m = messageEncoder.encodeDeclineMessage(s.getContactGroupId(),
-					s.getShareableId(), getLocalTimestamp(s),
+					s.getShareableId(), localTimestamp,
 					s.getLastLocalMessageId(), timer);
 			sendMessage(txn, m, DECLINE, s.getShareableId(), true, timer);
 		} else {
 			m = messageEncoder.encodeDeclineMessage(s.getContactGroupId(),
-					s.getShareableId(), getLocalTimestamp(s),
+					s.getShareableId(), localTimestamp,
 					s.getLastLocalMessageId());
 			sendMessage(txn, m, DECLINE, s.getShareableId(), true,
 					NO_AUTO_DELETE_TIMER);
@@ -307,9 +310,10 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 
 	private Message sendLeaveMessage(Transaction txn, Session session)
 			throws DbException {
+		long localTimestamp = getLocalTimestamp(txn, session);
 		Message m = messageEncoder.encodeLeaveMessage(
 				session.getContactGroupId(), session.getShareableId(),
-				getLocalTimestamp(session), session.getLastLocalMessageId());
+				localTimestamp, session.getLastLocalMessageId());
 		sendMessage(txn, m, LEAVE, session.getShareableId(), false,
 				NO_AUTO_DELETE_TIMER);
 		return m;
@@ -605,9 +609,10 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 
 	private Message sendAbortMessage(Transaction txn, Session session)
 			throws DbException {
+		long localTimestamp = getLocalTimestamp(txn, session);
 		Message m = messageEncoder.encodeAbortMessage(
 				session.getContactGroupId(), session.getShareableId(),
-				getLocalTimestamp(session), session.getLastLocalMessageId());
+				localTimestamp, session.getLastLocalMessageId());
 		sendMessage(txn, m, ABORT, session.getShareableId(), false,
 				NO_AUTO_DELETE_TIMER);
 		return m;
@@ -677,10 +682,19 @@ abstract class ProtocolEngineImpl<S extends Shareable>
 		return !dependency.equals(expected);
 	}
 
-	private long getLocalTimestamp(Session session) {
-		return Math.max(clock.currentTimeMillis(),
-				Math.max(session.getLocalTimestamp(),
-						session.getInviteTimestamp()) + 1);
+	/**
+	 * Returns a timestamp for an outgoing message, which is later than the
+	 * timestamp of any message sent or received so far in the conversation
+	 * or the session.
+	 */
+	private long getLocalTimestamp(Transaction txn, Session session)
+			throws DbException {
+		ContactId c = getContactId(txn, session.getContactGroupId());
+		long conversationTimestamp =
+				conversationManager.getTimestampForOutgoingMessage(txn, c);
+		long sessionTimestamp = max(session.getLocalTimestamp(),
+				session.getInviteTimestamp()) + 1;
+		return max(conversationTimestamp, sessionTimestamp);
 	}
 
 	private ContactId getContactId(Transaction txn, GroupId contactGroupId)

briar-core/src/main/java/org/briarproject/briar/sharing/SharingManagerImpl.java

@@ -248,7 +248,7 @@ abstract class SharingManagerImpl<S extends Shareable>
 
 	@Override
 	public void sendInvitation(GroupId shareableId, ContactId contactId,
-			@Nullable String text, long timestamp) throws DbException {
+			@Nullable String text) throws DbException {
 		SessionId sessionId = getSessionId(shareableId);
 		Transaction txn = db.startTransaction(false);
 		try {
@@ -273,7 +273,7 @@ abstract class SharingManagerImpl<S extends Shareable>
 				storageId = ss.storageId;
 			}
 			// Handle the invite action
-			session = engine.onInviteAction(txn, session, text, timestamp);
+			session = engine.onInviteAction(txn, session, text);
 			// Store the updated session
 			storeSession(txn, storageId, session);
 			db.commitTransaction(txn);

briar-core/src/test/java/org/briarproject/briar/forum/ForumManagerTest.java

@@ -45,8 +45,7 @@ public class ForumManagerTest
 		forum0 = forumManager0.addForum("Test Forum");
 		groupId0 = forum0.getId();
 		// share forum
-		forumSharingManager0.sendInvitation(groupId0, contactId1From0, null,
-				clock.currentTimeMillis());
+		forumSharingManager0.sendInvitation(groupId0, contactId1From0, null);
 		sync0To1(1, true);
 		forumSharingManager1.respondToInvitation(forum0, contact0From1, true);
 		sync1To0(1, true);
@@ -194,8 +193,7 @@ public class ForumManagerTest
 		// share a second forum
 		Forum forum1 = forumManager0.addForum("Test Forum1");
 		GroupId g1 = forum1.getId();
-		forumSharingManager0.sendInvitation(g1, contactId1From0, null,
-				clock.currentTimeMillis());
+		forumSharingManager0.sendInvitation(g1, contactId1From0, null);
 		sync0To1(1, true);
 		forumSharingManager1.respondToInvitation(forum1, contact0From1, true);
 		sync1To0(1, true);

briar-core/src/test/java/org/briarproject/briar/sharing/BlogSharingIntegrationTest.java

@@ -122,8 +122,7 @@ public class BlogSharingIntegrationTest
 
 		// send invitation
 		blogSharingManager0
-				.sendInvitation(blog2.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(blog2.getId(), contactId1From0, "Hi!");
 
 		// invitee has own blog and that of the sharer
 		assertEquals(2, blogManager1.getBlogs().size());
@@ -213,8 +212,8 @@ public class BlogSharingIntegrationTest
 		blogManager0.addBlog(rssBlog);
 
 		// send invitation
-		blogSharingManager0.sendInvitation(rssBlog.getId(), contactId1From0,
-				"Hi!", clock.currentTimeMillis());
+		blogSharingManager0
+				.sendInvitation(rssBlog.getId(), contactId1From0, "Hi!");
 
 		// invitee has own blog and that of the sharer
 		assertEquals(2, blogManager1.getBlogs().size());
@@ -285,8 +284,7 @@ public class BlogSharingIntegrationTest
 
 		// send invitation
 		blogSharingManager0
-				.sendInvitation(blog2.getId(), contactId1From0, null,
-						clock.currentTimeMillis());
+				.sendInvitation(blog2.getId(), contactId1From0, null);
 
 		// sync first request message
 		sync0To1(1, true);
@@ -341,8 +339,7 @@ public class BlogSharingIntegrationTest
 
 		// send invitation
 		blogSharingManager0
-				.sendInvitation(blog2.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(blog2.getId(), contactId1From0, "Hi!");
 
 		// sync first request message
 		sync0To1(1, true);
@@ -398,8 +395,7 @@ public class BlogSharingIntegrationTest
 
 		// sharer sends invitation for 2's blog to 1
 		blogSharingManager0
-				.sendInvitation(blog2.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(blog2.getId(), contactId1From0, "Hi!");
 
 		// sync first request message
 		sync0To1(1, true);
@@ -436,8 +432,7 @@ public class BlogSharingIntegrationTest
 
 		// send invitation
 		blogSharingManager0
-				.sendInvitation(blog2.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(blog2.getId(), contactId1From0, "Hi!");
 
 		// sync first request message
 		sync0To1(1, true);
@@ -515,8 +510,7 @@ public class BlogSharingIntegrationTest
 
 		// sharer sends invitation for 2's blog to 1
 		blogSharingManager0
-				.sendInvitation(blog2.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(blog2.getId(), contactId1From0, "Hi!");
 
 		// sync first request message
 		sync0To1(1, true);

briar-core/src/test/java/org/briarproject/briar/sharing/ForumSharingIntegrationTest.java

@@ -126,8 +126,7 @@ public class ForumSharingIntegrationTest
 	public void testSuccessfulSharing() throws Exception {
 		// send invitation
 		forumSharingManager0
-				.sendInvitation(forum.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// check that request message state is correct
 		Collection<ConversationMessageHeader> messages = getMessages1From0();
@@ -191,8 +190,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testDeclinedSharing() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 
 		// sync request message
 		sync0To1(1, true);
@@ -243,8 +242,8 @@ public class ForumSharingIntegrationTest
 
 		// send a new invitation again after re-adding the forum
 		db0.transaction(false, txn -> forumManager0.addForum(txn, forum));
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 
 		// reset listener state for new request
 		listener1.requestReceived = false;
@@ -259,8 +258,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testInviteeLeavesAfterFinished() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				"Hi!", clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -322,8 +321,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testSharerLeavesAfterFinished() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 
 		// sync request message
 		sync0To1(1, true);
@@ -383,8 +382,8 @@ public class ForumSharingIntegrationTest
 
 		// send a new invitation again after re-adding the forum
 		db0.transaction(false, txn -> forumManager0.addForum(txn, forum));
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 
 		// reset listener state for new request
 		listener1.requestReceived = false;
@@ -399,8 +398,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testSharerLeavesBeforeResponse() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 
 		// sharer un-subscribes from forum
 		forumManager0.removeForum(forum);
@@ -420,8 +419,7 @@ public class ForumSharingIntegrationTest
 
 		// send invitation
 		forumSharingManager0
-				.sendInvitation(forum.getId(), contactId1From0, null,
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From0, null);
 
 		// sync request message
 		sync0To1(1, true);
@@ -445,8 +443,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testSharingSameForumWithEachOther() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				"Hi!", clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -471,10 +469,9 @@ public class ForumSharingIntegrationTest
 		assertEquals(1, forumManager1.getForums().size());
 
 		// invitee now shares same forum back
-		forumSharingManager1.sendInvitation(forum.getId(),
-				contactId0From1,
-				"I am re-sharing this forum with you.",
-				clock.currentTimeMillis());
+		forumSharingManager1
+				.sendInvitation(forum.getId(), contactId0From1,
+						"I am re-sharing this forum with you.");
 
 		// assert that the last invitation wasn't send
 		assertEquals(2, c1.getMessageTracker().getGroupCount(group.getId())
@@ -485,8 +482,8 @@ public class ForumSharingIntegrationTest
 	public void testSharingSameForumWithEachOtherBeforeAccept()
 			throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				"Hi!", clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 		sync0To1(1, true);
 		eventWaiter.await(TIMEOUT, 1);
 		assertRequestReceived(listener1, contactId0From1);
@@ -501,10 +498,9 @@ public class ForumSharingIntegrationTest
 				.getMsgCount());
 
 		// invitee now shares same forum back
-		forumSharingManager1.sendInvitation(forum.getId(),
-				contactId0From1,
-				"I am re-sharing this forum with you.",
-				clock.currentTimeMillis());
+		forumSharingManager1
+				.sendInvitation(forum.getId(), contactId0From1,
+						"I am re-sharing this forum with you.");
 
 		// assert that the last invitation wasn't send
 		assertEquals(1, c1.getMessageTracker().getGroupCount(group.getId())
@@ -518,13 +514,12 @@ public class ForumSharingIntegrationTest
 
 		// send invitation
 		forumSharingManager0
-				.sendInvitation(forum.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// invitee now shares same forum back
-		forumSharingManager1.sendInvitation(forum.getId(),
-				contactId0From1, "I am re-sharing this forum with you.",
-				clock.currentTimeMillis());
+		forumSharingManager1
+				.sendInvitation(forum.getId(), contactId0From1,
+						"I am re-sharing this forum with you.");
 
 		// only now sync request message
 		sync0To1(1, true);
@@ -554,8 +549,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testContactRemoved() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				"Hi!", clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -597,8 +592,7 @@ public class ForumSharingIntegrationTest
 
 		// send invitation
 		forumSharingManager0
-				.sendInvitation(forum.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -626,8 +620,7 @@ public class ForumSharingIntegrationTest
 
 		// send invitation
 		forumSharingManager0
-				.sendInvitation(forum.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -637,8 +630,7 @@ public class ForumSharingIntegrationTest
 		// second sharer sends invitation for same forum
 		assertNotNull(contactId1From2);
 		forumSharingManager2
-				.sendInvitation(forum.getId(), contactId1From2, null,
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From2, null);
 
 		// sync second request message
 		sync2To1(1, true);
@@ -680,8 +672,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testSyncAfterReSharing() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				"Hi!", clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -745,8 +737,7 @@ public class ForumSharingIntegrationTest
 
 		// send invitation again
 		forumSharingManager0
-				.sendInvitation(forum.getId(), contactId1From0, "Hi!",
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -787,8 +778,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testSessionResetAfterAbort() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				"Hi!", clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, "Hi!");
 
 		// sync request message
 		sync0To1(1, true);
@@ -836,8 +827,7 @@ public class ForumSharingIntegrationTest
 
 		// new invitation is possible now
 		forumSharingManager0
-				.sendInvitation(forum.getId(), contactId1From0, null,
-						clock.currentTimeMillis());
+				.sendInvitation(forum.getId(), contactId1From0, null);
 		sync0To1(1, true);
 		eventWaiter.await(TIMEOUT, 1);
 		assertRequestReceived(listener1, contactId0From1);
@@ -859,8 +849,8 @@ public class ForumSharingIntegrationTest
 	public void testDeletingAllMessagesWhenCompletingSession()
 			throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 		sync0To1(1, true);
 		eventWaiter.await(TIMEOUT, 1);
 
@@ -909,8 +899,8 @@ public class ForumSharingIntegrationTest
 		sync1To0(1, true);
 
 		// sending invitation is possible again
-		forumSharingManager1.sendInvitation(forum.getId(), contactId0From1,
-				null, clock.currentTimeMillis());
+		forumSharingManager1
+				.sendInvitation(forum.getId(), contactId0From1, null);
 		sync1To0(1, true);
 		eventWaiter.await(TIMEOUT, 1);
 
@@ -944,8 +934,8 @@ public class ForumSharingIntegrationTest
 	public void testDeletingAllMessagesAfterDecline()
 			throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 		sync0To1(1, true);
 		eventWaiter.await(TIMEOUT, 1);
 
@@ -969,8 +959,8 @@ public class ForumSharingIntegrationTest
 		assertEquals(0, getMessages0From1().size());
 
 		// re-sending invitation is possible
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 		sync0To1(1, true);
 		eventWaiter.await(TIMEOUT, 1);
 
@@ -984,8 +974,8 @@ public class ForumSharingIntegrationTest
 	@Test
 	public void testDeletingSomeMessages() throws Exception {
 		// send invitation
-		forumSharingManager0.sendInvitation(forum.getId(), contactId1From0,
-				null, clock.currentTimeMillis());
+		forumSharingManager0
+				.sendInvitation(forum.getId(), contactId1From0, null);
 		sync0To1(1, true);
 		eventWaiter.await(TIMEOUT, 1);
 
@@ -996,7 +986,8 @@ public class ForumSharingIntegrationTest
 		Set<MessageId> toDelete = new HashSet<>();
 		toDelete.add(messageId);
 		assertFalse(deleteMessages1From0(toDelete).allDeleted());
-		assertTrue(deleteMessages1From0(toDelete).hasInvitationSessionInProgress());
+		assertTrue(deleteMessages1From0(toDelete)
+				.hasInvitationSessionInProgress());
 
 		// decline invitation
 		respondToRequest(contactId0From1, true);
@@ -1006,9 +997,11 @@ public class ForumSharingIntegrationTest
 		// both can still not delete the invitation,
 		// because the response was not selected for deletion as well
 		assertFalse(deleteMessages1From0(toDelete).allDeleted());
-		assertTrue(deleteMessages1From0(toDelete).hasNotAllInvitationSelected());
+		assertTrue(
+				deleteMessages1From0(toDelete).hasNotAllInvitationSelected());
 		assertFalse(deleteMessages0From1(toDelete).allDeleted());
-		assertTrue(deleteMessages0From1(toDelete).hasNotAllInvitationSelected());
+		assertTrue(
+				deleteMessages0From1(toDelete).hasNotAllInvitationSelected());
 
 		// after selecting response, both messages can be deleted
 		m0 = getMessages1From0();
@@ -1023,8 +1016,10 @@ public class ForumSharingIntegrationTest
 
 		// 1 can still not delete the messages, as last one has not been ACKed
 		assertFalse(deleteMessages0From1(toDelete).allDeleted());
-		assertFalse(deleteMessages0From1(toDelete).hasNotAllInvitationSelected());
-		assertTrue(deleteMessages0From1(toDelete).hasInvitationSessionInProgress());
+		assertFalse(
+				deleteMessages0From1(toDelete).hasNotAllInvitationSelected());
+		assertTrue(deleteMessages0From1(toDelete)
+				.hasInvitationSessionInProgress());
 
 		// 0 sends an ACK to their last message
 		sendAcks(c0, c1, contactId1From0, 1);