1 files changed, 116 insertions, 0 deletions
diff --git a/netbox-client/provider/src/main/java/org/onap/ccsdk/sli/adaptors/netbox/property/NetboxProperties.java b/netbox-client/provider/src/main/java/org/onap/ccsdk/sli/adaptors/netbox/property/NetboxProperties.java
new file mode 100644
index 00000000..ee493ec1
--- /dev/null
+++ b/netbox-client/provider/src/main/java/org/onap/ccsdk/sli/adaptors/netbox/property/NetboxProperties.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2018 Bell Canada.
+ *
+ * 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 org.onap.ccsdk.sli.adaptors.netbox.property;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.HashSet;
+import java.util.Optional;
+import java.util.Properties;
+import java.util.Set;
+
+import org.onap.ccsdk.sli.adaptors.netbox.api.IpamException;
+import org.onap.ccsdk.sli.core.utils.JREFileResolver;
+import org.onap.ccsdk.sli.core.utils.KarafRootFileResolver;
+import org.onap.ccsdk.sli.core.utils.PropertiesFileResolver;
+import org.onap.ccsdk.sli.core.utils.common.BundleContextFileResolver;
+import org.onap.ccsdk.sli.core.utils.common.SdncConfigEnvVarFileResolver;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Responsible for determining the properties file to use.
+ *
+ * <ol>
+ * <li>A directory identified by the system environment variable <code>SDNC_CONFIG_DIR</code></li>
+ * <li>A directory identified by the JRE argument <code>netbox.properties</code></li>
+ * <li>A <code>netbox.properties</code> file located in the karaf root directory</li>
+ * </ol>
+ *
+ * Partial copy and adaptation of org.onap.ccsdk.sli.adaptors.aai.AAIServiceProvider
+ */
+public class NetboxProperties {
+
+    private static final Logger LOG = LoggerFactory.getLogger(NetboxProperties.class);
+
+    private static final String NETBOX_PROPERTY_FILE_NAME = "netbox.properties";
+    private static final String MISSING_PROPERTY_FILE =
+        "Missing configuration properties resource for Netbox: " + NETBOX_PROPERTY_FILE_NAME;
+    private static final String NETBOX_URL_PROP = "org.onap.ccsdk.sli.adaptors.netbox.url";
+    private static final String NETBOX_API_KEY_PROP = "org.onap.ccsdk.sli.adaptors.netbox.apikey";
+
+    private Set<PropertiesFileResolver> fileResolvers = new HashSet<>();
+    private Properties properties;
+
+    public NetboxProperties() {
+        fileResolvers.add(new SdncConfigEnvVarFileResolver("Using property file (1) from environment variable"));
+        fileResolvers.add(new BundleContextFileResolver("Using property file (2) from BundleContext property",
+            NetboxProperties.class));
+        fileResolvers.add(new JREFileResolver("Using property file (3) from JRE argument", NetboxProperties.class));
+        fileResolvers.add(new KarafRootFileResolver("Using property file (4) from karaf root", this));
+
+        loadProps();
+    }
+
+    public String getHost() {
+        checkArgument(properties != null);
+        return properties.getProperty(NETBOX_URL_PROP);
+    }
+
+    public String getApiKey() {
+        checkArgument(properties != null);
+        return properties.getProperty(NETBOX_API_KEY_PROP);
+    }
+
+    private void checkArgument(final boolean argument) {
+        if (!argument) {
+            LOG.info("Propety file {} was missing, trying to reload it", NETBOX_PROPERTY_FILE_NAME);
+            loadProps();
+            if (properties == null) {
+                throw new IllegalArgumentException(MISSING_PROPERTY_FILE);
+            }
+        }
+    }
+
+    private void loadProps() {
+        // determines properties file as according to the priority described in the class header comment
+        final File propertiesFile = determinePropertiesFile();
+        if (propertiesFile != null) {
+            try (FileInputStream fileInputStream = new FileInputStream(propertiesFile)) {
+                properties = new Properties();
+                properties.load(fileInputStream);
+            } catch (final IOException e) {
+                String errorMsg = "Failed to load properties for file: " + propertiesFile.toString();
+                LOG.error(errorMsg, new IpamException(errorMsg));
+            }
+        }
+    }
+
+    private File determinePropertiesFile() {
+        for (final PropertiesFileResolver resolver : fileResolvers) {
+            final Optional<File> fileOptional = resolver.resolveFile(NETBOX_PROPERTY_FILE_NAME);
+            if (fileOptional.isPresent()) {
+                final File file = fileOptional.get();
+                LOG.info("{} {}", resolver.getSuccessfulResolutionMessage(), file.getPath());
+                return file;
+            }
+        }
+
+        LOG.error(MISSING_PROPERTY_FILE, new IpamException(MISSING_PROPERTY_FILE));
+        return null;
+    }
+}