Migrate common code to router-core from DR

[aai/router-core.git] / src / main / java / org / onap / aai / schema / SchemaIngestPropertiesReader.java

diff --git a/src/main/java/org/onap/aai/schema/SchemaIngestPropertiesReader.java b/src/main/java/org/onap/aai/schema/SchemaIngestPropertiesReader.java
new file mode 100644 (file)
index 0000000..d2903e6
--- /dev/null
+++ b/src/main/java/org/onap/aai/schema/SchemaIngestPropertiesReader.java
@@ -0,0 +1,88 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * Copyright © 2017-2018 Amdocs
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.aai.schema;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.NoSuchFileException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Properties;
+import org.onap.aai.cl.eelf.LoggerFactory;
+import org.onap.aai.logging.RouterCoreMsgs;
+
+public class SchemaIngestPropertiesReader {
+
+    private static final String SCHEMA_INGEST_PROPERTIES_FILE = "schemaIngest.properties";
+    private static final String MSG_FAILED_LOAD_SCHEMA_INGEST_PROPERTIES = "Failed to load " + SCHEMA_INGEST_PROPERTIES_FILE;
+
+    private static final String SCHEMA_INGEST_PROPERTIES_LOCATION =
+            System.getProperty("CONFIG_HOME") + "/" + SCHEMA_INGEST_PROPERTIES_FILE;
+
+    private static org.onap.aai.cl.api.Logger logger =
+            LoggerFactory.getInstance().getLogger(SchemaIngestPropertiesReader.class.getName());
+
+    /**
+     * Gets the location of the OXM.
+     *
+     * @return the directory containing the OXM files
+     */
+    public String getNodeDir() {
+
+        Properties prop = new Properties();
+        try {
+            prop = loadFromFile(SCHEMA_INGEST_PROPERTIES_LOCATION);
+        } catch (NoSuchFileException e) {
+            try {
+                prop = loadFromClasspath(SCHEMA_INGEST_PROPERTIES_FILE);
+            } catch (URISyntaxException | IOException ef) {
+                logger.error(RouterCoreMsgs.SCHEMA_INGEST_LOAD_ERROR, ef.getMessage());
+                throw new RuntimeException(MSG_FAILED_LOAD_SCHEMA_INGEST_PROPERTIES);
+            }
+        } catch (IOException ec) {
+            logger.error(RouterCoreMsgs.SCHEMA_INGEST_LOAD_ERROR, ec.getMessage());
+            throw new RuntimeException(MSG_FAILED_LOAD_SCHEMA_INGEST_PROPERTIES);
+        }
+        return prop.getProperty("nodeDir");
+    }
+
+    private Properties loadFromFile(String filename) throws IOException {
+        Path configLocation = Paths.get(filename);
+        try (InputStream stream = Files.newInputStream(configLocation)) {
+            return loadProperties(stream);
+        }
+    }
+
+    private Properties loadFromClasspath(String resourceName) throws URISyntaxException, IOException {
+        Path path = Paths.get(ClassLoader.getSystemResource(resourceName).toURI());
+        try (InputStream stream = Files.newInputStream(path)) {
+            return loadProperties(stream);
+        }
+    }
+
+    private Properties loadProperties(InputStream stream) throws IOException {
+        Properties config = new Properties();
+        config.load(stream);
+        return config;
+    }
+}