Bye bye Groovy, you won't be missed :(

src/main/java/io/kamax/mxisd/notification/NotificationManager.java

@@ -0,0 +1,69 @@
+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Maxime Dor
+ *
+ * https://max.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package io.kamax.mxisd.notification;
+
+import io.kamax.mxisd.exception.NotImplementedException;
+import io.kamax.mxisd.invitation.IThreePidInviteReply;
+import io.kamax.mxisd.threepid.session.IThreePidSession;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+@Component
+public class NotificationManager {
+
+    private Map<String, INotificationHandler> handlers;
+
+    @Autowired
+    public NotificationManager(List<INotificationHandler> handlers) {
+        this.handlers = new HashMap<>();
+        handlers.forEach(h -> this.handlers.put(h.getMedium(), h));
+    }
+
+    private INotificationHandler ensureMedium(String medium) {
+        INotificationHandler handler = handlers.get(medium);
+        if (handler == null) {
+            throw new NotImplementedException(medium + " is not a supported 3PID medium type");
+        }
+
+        return handler;
+    }
+
+    public boolean isMediumSupported(String medium) {
+        return handlers.containsKey(medium);
+    }
+
+    public void sendForInvite(IThreePidInviteReply invite) {
+        ensureMedium(invite.getInvite().getMedium()).sendForInvite(invite);
+    }
+
+    public void sendForValidation(IThreePidSession session) {
+        ensureMedium(session.getThreePid().getMedium()).sendForValidation(session);
+    }
+
+    public void sendforRemoteValidation(IThreePidSession session) {
+        ensureMedium(session.getThreePid().getMedium()).sendForRemoteValidation(session);
+    }
+
+}