Invite resolution enhancements (#63)

* Make invite resolution process configurable

* Add warning in logs if invite resolution is not recursive

src/main/java/io/kamax/mxisd/config/InvitationConfig.java

@@ -0,0 +1,76 @@
+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2018 Kamax Sàrl
+ *
+ * https://www.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.config;
+
+import io.kamax.mxisd.util.GsonUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Configuration;
+
+import javax.annotation.PostConstruct;
+
+@Configuration
+@ConfigurationProperties("invite")
+public class InvitationConfig {
+
+    private final Logger log = LoggerFactory.getLogger(InvitationConfig.class);
+
+    public static class Resolution {
+
+        private boolean recursive;
+        private long timer;
+
+        public boolean isRecursive() {
+            return recursive;
+        }
+
+        public void setRecursive(boolean recursive) {
+            this.recursive = recursive;
+        }
+
+        public long getTimer() {
+            return timer;
+        }
+
+        public void setTimer(long timer) {
+            this.timer = timer;
+        }
+
+    }
+
+    private Resolution resolution;
+
+    public Resolution getResolution() {
+        return resolution;
+    }
+
+    public void setResolution(Resolution resolution) {
+        this.resolution = resolution;
+    }
+
+    @PostConstruct
+    public void build() {
+        log.info("--- Invite config ---");
+        log.info("Resolution: {}", GsonUtil.build().toJson(resolution));
+    }
+
+}