1 files changed, 74 insertions, 0 deletions
diff --git a/utils/provider/src/main/java/org/onap/ccsdk/sli/core/utils/JREFileResolver.java b/utils/provider/src/main/java/org/onap/ccsdk/sli/core/utils/JREFileResolver.java
new file mode 100644
index 00000000..5cd6c360
--- /dev/null
+++ b/utils/provider/src/main/java/org/onap/ccsdk/sli/core/utils/JREFileResolver.java
@@ -0,0 +1,74 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * onap
+ * ================================================================================
+ * Copyright (C) 2016 - 2017 ONAP
+ * ================================================================================
+ * 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.ccsdk.sli.core.utils;
+
+import java.io.File;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Optional;
+import org.osgi.framework.FrameworkUtil;
+
+/**
+ * Resolves dblib properties files relative to the directory identified by the JRE property
+ * <code>dblib.properties</code>.
+ */
+public class JREFileResolver implements PropertiesFileResolver {
+
+    /**
+     * Key for JRE argument representing the configuration directory
+     */
+    private static final String DBLIB_JRE_PROPERTY_KEY = "dblib.properties";
+
+    private final String successMessage;
+    private final Class clazz;
+
+    public JREFileResolver(final String successMessage, final Class clazz) {
+        this.successMessage = successMessage;
+        this.clazz = clazz;
+    }
+
+    /**
+     * Parse a properties file location based on JRE argument
+     *
+     * @return an Optional File containing the location if it exists, or an empty Optional
+     */
+    @Override
+    public Optional<File> resolveFile(final String filename) {
+        final URL jreArgumentUrl = FrameworkUtil.getBundle(this.clazz)
+                .getResource(DBLIB_JRE_PROPERTY_KEY);
+        try {
+            if (jreArgumentUrl == null) {
+                return Optional.empty();
+            }
+            final Path dblibPath = Paths.get(jreArgumentUrl.toURI());
+            return Optional.of(dblibPath.resolve(filename).toFile());
+        } catch(final URISyntaxException e) {
+            return Optional.empty();
+        }
+    }
+
+    @Override
+    public String getSuccessfulResolutionMessage() {
+        return this.successMessage;
+    }
+}