CB-422 AWS common service and EC2 metadata discovery

server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/server/CBApplication.java

@@ -23,7 +23,9 @@ import com.google.gson.stream.JsonWriter;
 import io.cloudbeaver.DBWConnectionGrant;
 import io.cloudbeaver.DBWSecurityController;
 import io.cloudbeaver.WebServiceUtils;
+import io.cloudbeaver.registry.WebServiceRegistry;
 import io.cloudbeaver.server.jetty.CBJettyServer;
+import io.cloudbeaver.service.DBWServiceInitializer;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.equinox.app.IApplicationContext;
 import org.eclipse.osgi.service.datalocation.Location;
@@ -242,6 +244,17 @@ public class CBApplication extends BaseApplicationImpl {
                 log.debug("\t\t" + ia.getHostAddress() + " (" + ia.getCanonicalHostName() + ")");
             }
         }
+        {
+            // Perform services initialization
+            for (DBWServiceInitializer wsi : WebServiceRegistry.getInstance().getWebServices(DBWServiceInitializer.class)) {
+                try {
+                    wsi.initializeService(this);
+                } catch (Exception e) {
+                    log.warn("Error initializing web service " + wsi.getClass().getName(), e);
+                }
+            }
+
+        }
 
         {
             try {
@@ -278,7 +291,7 @@ public class CBApplication extends BaseApplicationImpl {
             try {
                 InetAddress dockerAddress = InetAddress.getByName(CBConstants.VAR_HOST_DOCKER_INTERNAL);
                 localInetAddresses.add(dockerAddress);
-                log.debug("\tRun in Docker container (" + dockerAddress + ")");
+                log.debug("\tRun in Docker container (" + dockerAddress + ")?");
             } catch (UnknownHostException e) {
                 // Ignore - not a docker env
             }

server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/service/DBWServiceInitializer.java

@@ -0,0 +1,29 @@
+/*
+ * DBeaver - Universal Database Manager
+ * Copyright (C) 2010-2020 DBeaver Corp and others
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.cloudbeaver.service;
+
+import org.jkiss.dbeaver.DBException;
+import org.jkiss.dbeaver.model.app.DBPApplication;
+
+/**
+ * Web service implementation
+ */
+public interface DBWServiceInitializer extends DBWServiceBinding {
+
+    void initializeService(DBPApplication application) throws DBException;
+
+}