Added config output class

Author: Aleksandar Osenov

devicehive-auth/src/main/java/com/devicehive/application/AppContextEventListener.java

@@ -0,0 +1,67 @@
+package com.devicehive.application;
+
+/*
+ * #%L
+ * DeviceHive Frontend Logic
+ * %%
+ * Copyright (C) 2016 DataArt
+ * %%
+ * 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.
+ * #L%
+ */
+
+import org.springframework.context.event.ContextRefreshedEvent;
+import org.springframework.context.event.EventListener;
+import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.core.env.MapPropertySource;
+import org.springframework.stereotype.Component;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Collection;
+
+@Component
+public class AppContextEventListener {
+
+    @EventListener
+    public void handleContextRefreshed(ContextRefreshedEvent event) {
+        printActiveProperties((ConfigurableEnvironment) event.getApplicationContext().getEnvironment());
+    }
+
+    private void printActiveProperties(ConfigurableEnvironment env) {
+
+        System.out.println("************************* ACTIVE APP PROPERTIES ******************************");
+
+        List<MapPropertySource> propertySources = new ArrayList<>();
+
+        env.getPropertySources().forEach(it -> {
+            if (it instanceof MapPropertySource) {
+                propertySources.add((MapPropertySource) it);
+            }
+        });
+
+        propertySources.stream()
+                .map(propertySource -> propertySource.getSource().keySet())
+                .flatMap(Collection::stream)
+                .distinct()
+                .sorted()
+                .forEach(key -> {
+                    try {
+                        System.out.println(key + "=" + env.getProperty(key));
+                    } catch (Exception e) {
+                        System.out.println(e);
+                    }
+                });
+        System.out.println("******************************************************************************");
+    }
+}