dme2 plugin improvements

DME2 plugin itself will be coded to generic properties object not any custom object. The code is flexible so new query parameters can easily be added without code changes. Default properties which could previously not be overridden can now be overridden if desired.

Change-Id: I56b4dfd4dee350198a23ac57c775bd1adacb1a9a
Issue-ID: CCSDK-274
Signed-off-by: Smokowski, Kevin (ks6305) <ks6305@att.com>

4 files changed, 278 insertions, 442 deletions

diff --git a/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/DME2.java b/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/DME2.java
index 6bdd87e24..5121e8a56 100644
--- a/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/DME2.java
+++ b/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/DME2.java
@@ -1,146 +1,150 @@
-/*-
- * ============LICENSE_START=======================================================
- * ONAP : CCSDK
- * ================================================================================
- * Copyright (C) 2017 AT&T Intellectual Property. All rights
- * 						reserved.
- * ================================================================================
- * 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.slipluginutils;
-
-import java.util.Map;
-
-import java.util.Optional;
-import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
-import org.onap.ccsdk.sli.core.sli.SvcLogicException;
-import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-
-
-/**
- * A SvcLogicJavaPlugin that generates DME2 proxy urls using parameters from context memory.
- */
-public class DME2 implements SvcLogicJavaPlugin {
-
-    private static final Logger LOG = LoggerFactory.getLogger(DME2.class);
-
-    final String aafUserName;
-    final String aafPassword;
-    final String envContext;
-    final String routeOffer;
-    final String[] proxyUrls;
-    final String commonServiceVersion;
-
-    Integer index;
-    String partner;
-
-
-    public void setPartner(String partner) {
-        if (partner != null && partner.length() > 0) {
-            this.partner = partner;
-        }
-    }
-
-    public DME2(String aafUserName, String aafPassword, String envContext, String routeOffer, String[] proxyUrls, String commonServiceVersion) {
-        this.aafUserName = aafUserName;
-        this.aafPassword = aafPassword;
-        this.envContext = envContext;
-        this.routeOffer = routeOffer;
-        this.proxyUrls = proxyUrls;
-        this.index = 0;
-        this.commonServiceVersion = commonServiceVersion;
-    }
-
-    public DME2(final Dme2PropertiesProvider provider) {
-        this.aafUserName = useProperty(provider.getAafUsername(), Dme2PropertiesProvider.AAF_USERNAME_KEY);
-        this.aafPassword = useProperty(provider.getAafPassword(), Dme2PropertiesProvider.AAF_PASSWORD_KEY);
-        this.envContext = useProperty(provider.getEnvContext(), Dme2PropertiesProvider.ENV_CONTEXT_KEY);
-        this.routeOffer = useProperty(provider.getRouteOffer(), Dme2PropertiesProvider.ROUTE_OFFER_KEY);
-        this.index = 0;
-        this.commonServiceVersion = useProperty(provider.getCommonServiceVersion(),
-                Dme2PropertiesProvider.COMMON_SERVICE_VERSION_KEY);
-
-        final Optional<String []> maybeProxyUrls = provider.getProxyUrls();
-        if (maybeProxyUrls.isPresent()) {
-            this.proxyUrls = maybeProxyUrls.get();
-        } else {
-            warnOfMissingProperty(Dme2PropertiesProvider.PROXY_URL_KEY);
-            this.proxyUrls = null;
-        }
-        this.setPartner(useProperty(provider.getPartner(), Dme2PropertiesProvider.PARTNER_KEY));
-    }
-
-    private String useProperty(final Optional<String> propertyOptional, final String propertyKey) {
-        if (propertyOptional.isPresent()) {
-            return propertyOptional.get();
-        }
-        warnOfMissingProperty(propertyKey);
-        return null;
-    }
-
-    private void warnOfMissingProperty(final String propertyName) {
-        LOG.warn("Utilizing null for {} since it was left unassigned in the properties file");
-    }
-
-    // constructs a URL to contact the proxy which contacts a DME2 service
-    public String constructUrl(String service, String version, String subContext) {
-        StringBuilder sb = new StringBuilder();
-
-        // The hostname is assigned in a round robin fashion
-        sb.append(acquireHostName());
-        sb.append("/service=" + service);
-
-        //If the directedGraph passes an explicit version use that, if not use the commonServiceVersion found in the properties file
-        if (version == null) {
-            version = this.commonServiceVersion;
-        }
-        sb.append("/version=" + version);
-
-        sb.append("/envContext=" + this.envContext);
-        if (this.routeOffer != null && this.routeOffer.length() > 0) {
-            sb.append("/routeOffer=" + this.routeOffer);
-        }
-        if (subContext != null && subContext.length() > 0) {
-            sb.append("/subContext=" + subContext);
-        }
-        sb.append("?dme2.password=" + this.aafPassword);
-        sb.append("&dme2.username=" + this.aafUserName);
-        if (this.partner != null) {
-            sb.append("&dme2.partner=" + this.partner);
-        }
-        sb.append("&dme2.allowhttpcode=true");
-        return sb.toString();
-    }
-
-    public synchronized String acquireHostName() {
-        String retVal = proxyUrls[index];
-        index++;
-        if (index == this.proxyUrls.length) {
-            index = 0;
-        }
-        return retVal;
-    }
-
-    // Node entry point
-    public void constructUrl(Map<String, String> parameters, SvcLogicContext ctx) throws SvcLogicException {
-        SliPluginUtils.checkParameters(parameters, new String[] { "service", "outputPath" }, LOG);
-        String completeProxyUrl = constructUrl(parameters.get("service"), parameters.get("version"), parameters.get("subContext"));
-        ctx.setAttribute(parameters.get("outputPath"), completeProxyUrl);
-    }
-
-}
+/*-

+ * ============LICENSE_START=======================================================

+ * ONAP : CCSDK

+ * ================================================================================

+ * Copyright (C) 2017 AT&T Intellectual Property. All rights

+ *                      reserved.

+ * ================================================================================

+ * 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.slipluginutils;

+

+import java.util.Iterator;

+import java.util.Map;

+import java.util.Map.Entry;

+import java.util.Properties;

+import org.onap.ccsdk.sli.core.sli.SvcLogicContext;

+import org.onap.ccsdk.sli.core.sli.SvcLogicException;

+import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+/**

+ * A SvcLogicJavaPlugin that generates DME2 proxy urls (for calling the DME2 ingress proxy) using

+ * parameters from context memory.

+ */

+public class DME2 implements SvcLogicJavaPlugin {

+

+    private static final Logger LOG = LoggerFactory.getLogger(DME2.class);

+    // the key for <code>proxyUrl</code>, which represents a CSV list of urls

+    static final String PROXY_URL_KEY = "proxyUrl";

+    static final String PROXY_URLS_VALUE_SEPARATOR = ",";

+    static final String AAF_USERNAME_KEY = "aafUserName";

+    static final String AAF_PASSWORD_KEY = "aafPassword";

+    static final String ENV_CONTEXT_KEY = "envContext";

+    static final String ROUTE_OFFER_KEY = "routeOffer";

+    static final String COMMON_SERVICE_VERSION_KEY = "commonServiceVersion";

+    static final String PARTNER_KEY = "partner";

+    static final String VERSION_KEY = "version";

+    static final String SERVICE_KEY = "service";

+    static final String SUBCONTEXT_KEY = "subContext";

+    static final String ENDPOINT_READ_TIMEOUT_KEY = "endpointReadTimeout";

+    static final String OUTPUT_PATH_KEY = "outputPath";

+

+    final String aafUserName;

+    final String aafPassword;

+    final String envContext;

+    final String routeOffer;

+    final String[] proxyUrls;

+    final String commonServiceVersion;

+    final String partner;

+    final String endpointReadTimeout;

+    Integer index;

+

+    public DME2(Properties properties) {

+        Iterator<Entry<Object, Object>> it = properties.entrySet().iterator();

+        while (it.hasNext()) {

+            Entry<Object, Object> entry = it.next();

+            if (entry.getValue() == null || entry.getValue().toString().length() < 1) {

+                it.remove();

+            }

+        }

+        this.aafUserName = properties.getProperty(AAF_USERNAME_KEY, null);

+        this.aafPassword = properties.getProperty(AAF_PASSWORD_KEY, null);

+        this.envContext = properties.getProperty(ENV_CONTEXT_KEY, null);

+        this.routeOffer = properties.getProperty(ROUTE_OFFER_KEY, null);

+        this.commonServiceVersion = properties.getProperty(COMMON_SERVICE_VERSION_KEY, null);

+        this.partner = properties.getProperty(PARTNER_KEY, null);

+        this.endpointReadTimeout = properties.getProperty(ENDPOINT_READ_TIMEOUT_KEY, null);

+        String proxyUrlString = properties.getProperty(PROXY_URL_KEY, null);

+        if (proxyUrlString != null && proxyUrlString.length() > 0) {

+            this.proxyUrls = proxyUrlString.split(PROXY_URLS_VALUE_SEPARATOR);

+        } else {

+            String[] local = {"http://localhost:5000"};

+            this.proxyUrls = local;

+        }

+        this.index = 0;

+    }

+

+    // constructs a URL to contact the proxy which contacts a DME2 service

+    public String constructUrl(Map<String, String> parameters) {

+        StringBuilder sb = new StringBuilder();

+

+        // The hostname is assigned in a round robin fashion

+        sb.append(acquireHostName());

+        sb.append("/service=" + parameters.get(SERVICE_KEY));

+

+        // If the directedGraph passes an explicit version use that, if not use the commonServiceVersion

+        // found in the properties file

+        String version = parameters.getOrDefault(VERSION_KEY, this.commonServiceVersion);

+        sb.append("/version=" + version);

+        String envContext = parameters.getOrDefault(ENV_CONTEXT_KEY, this.envContext);

+        sb.append("/envContext=" + envContext);

+        String routeOffer = parameters.getOrDefault(ROUTE_OFFER_KEY, this.routeOffer);

+        sb.append("/routeOffer=" + routeOffer);

+

+        String subContext = parameters.get(SUBCONTEXT_KEY);

+        if (subContext != null && subContext.length() > 0) {

+            sb.append("/subContext=" + subContext);

+        }

+        sb.append("?dme2.password=" + this.aafPassword);

+        sb.append("&dme2.username=" + this.aafUserName);

+        if (this.partner != null) {

+            sb.append("&dme2.partner=" + this.partner);

+        }

+        sb.append("&dme2.allowhttpcode=true");

+        String endpointReadTimeout = parameters.getOrDefault(ENDPOINT_READ_TIMEOUT_KEY, this.endpointReadTimeout);

+        if (endpointReadTimeout != null) {

+            sb.append("&dme2.endpointReadTimeout=" + endpointReadTimeout);

+        }

+        String incompleteUrl = sb.toString();

+

+        // Support optional parameters in a flexible way

+        for (Entry<String, String> param : parameters.entrySet()) {

+            if (!incompleteUrl.contains(param.getKey() + "=") && param.getValue() != null

+                    && param.getValue().length() > 0 && !OUTPUT_PATH_KEY.equals(param.getKey())) {

+                sb.append("&" + param.getKey() + "=" + param.getValue());

+            }

+        }

+        return sb.toString();

+    }

+

+    public synchronized String acquireHostName() {

+        String retVal = proxyUrls[index];

+        index++;

+        if (index == this.proxyUrls.length) {

+            index = 0;

+        }

+        return retVal;

+    }

+

+    // Node entry point

+    public void constructUrl(Map<String, String> parameters, SvcLogicContext ctx) throws SvcLogicException {

+        SliPluginUtils.checkParameters(parameters, new String[] {SERVICE_KEY, OUTPUT_PATH_KEY}, LOG);

+        String completeProxyUrl = constructUrl(parameters);

+        ctx.setAttribute(parameters.get(OUTPUT_PATH_KEY), completeProxyUrl);

+    }

+

+}

diff --git a/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/Dme2Factory.java b/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/Dme2Factory.java
new file mode 100644
index 000000000..7013a9c5d
--- /dev/null
+++ b/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/Dme2Factory.java
@@ -0,0 +1,109 @@
+/*-

+ * ============LICENSE_START=======================================================

+ * ONAP : CCSDK

+ * ================================================================================

+ * Copyright (C) 2017 AT&T Intellectual Property. All rights

+ * 						reserved.

+ * ================================================================================

+ * 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.slipluginutils;

+

+import java.io.File;

+import java.io.FileNotFoundException;

+import java.io.FileReader;

+import java.io.IOException;

+import java.util.Optional;

+import java.util.Properties;

+import java.util.Vector;

+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.CoreDefaultFileResolver;

+import org.onap.ccsdk.sli.core.utils.common.SdncConfigEnvVarFileResolver;

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+/**

+ * Immutable properties container for dme2 properties. Since the initial design decision was made to

+ * utilize <code>Properties</code> instead of an OSGi <code>ManagedService</code>, it was decided to

+ * make these properties immutable.

+ */

+public final class Dme2Factory {

+

+    private static final Logger LOG = LoggerFactory.getLogger(Dme2Factory.class);

+    private static final String DME2_PROPERTIES_FILE_NAME = "dme2.properties";

+

+    static Properties properties;

+    private Vector<PropertiesFileResolver> dme2PropertiesFileResolvers = new Vector<>();

+

+    public Dme2Factory() {

+        dme2PropertiesFileResolvers

+                .add(new SdncConfigEnvVarFileResolver("Using property file (1) from environment variable"));

+        dme2PropertiesFileResolvers.add(new CoreDefaultFileResolver("Using property file (2) from default directory"));

+        dme2PropertiesFileResolvers

+                .add(new JREFileResolver("Using property file (3) from JRE argument", Dme2Factory.class));

+        dme2PropertiesFileResolvers.add(new KarafRootFileResolver("Using property file (4) from karaf root", this));

+        File dme2File = getDme2File(DME2_PROPERTIES_FILE_NAME);

+        init(dme2File);

+    }

+

+    private void init(final File dme2propertiesFile) {

+        try {

+            properties = getProperties(dme2propertiesFile);

+        } catch (final FileNotFoundException e) {

+            LOG.error("dme2.properties file could not be found at path: {}", dme2propertiesFile, e);

+        } catch (final IOException e) {

+            LOG.error("fatal error reading dme2.properties at path: {}", dme2propertiesFile, e);

+        }

+    }

+

+    /**

+     * Reports the method chosen for properties resolution to the <code>Logger</code>.

+     *

+     * @param message Some user friendly message

+     * @param fileOptional The file location of the chosen properties file

+     * @return the file location of the chosen properties file

+     */

+    private static File reportSuccess(final String message, final Optional<File> fileOptional) {

+        if (fileOptional.isPresent()) {

+            final File file = fileOptional.get();

+            LOG.info("{} {}", message, file.getPath());

+            return file;

+        }

+        return null;

+    }

+

+    private File getDme2File(final String dme2Filename) {

+        for (final PropertiesFileResolver dblibPropertiesFileResolver : dme2PropertiesFileResolvers) {

+            final Optional<File> fileOptional = dblibPropertiesFileResolver.resolveFile(dme2Filename);

+            if (fileOptional.isPresent()) {

+                return reportSuccess(dblibPropertiesFileResolver.getSuccessfulResolutionMessage(), fileOptional);

+            }

+        }

+        return (new File(dme2Filename));

+    }

+

+    private static Properties getProperties(final File dme2File) throws IOException {

+        final Properties properties = new Properties();

+        properties.load(new FileReader(dme2File));

+        return properties;

+    }

+       

+    public DME2 createDme2() {

+        return new DME2(properties);

+    }

+

+}

diff --git a/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/Dme2PropertiesProvider.java b/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/Dme2PropertiesProvider.java
deleted file mode 100644
index 6802c9a8b..000000000
--- a/sliPluginUtils/provider/src/main/java/org/onap/ccsdk/sli/core/slipluginutils/Dme2PropertiesProvider.java
+++ /dev/null
@@ -1,278 +0,0 @@
-/*-
- * ============LICENSE_START=======================================================
- * ONAP : CCSDK
- * ================================================================================
- * Copyright (C) 2017 AT&T Intellectual Property. All rights
- * 						reserved.
- * ================================================================================
- * 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.slipluginutils;
-
-import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.Strings;
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileReader;
-import java.io.IOException;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.Optional;
-import java.util.Properties;
-import java.util.Vector;
-
-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.CoreDefaultFileResolver;
-import org.onap.ccsdk.sli.core.utils.common.SdncConfigEnvVarFileResolver;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * Immutable properties container for dme2 properties. Since the initial design
- * decision was made to utilize <code>Properties</code> instead of an OSGi
- * <code>ManagedService</code>, it was decided to make these properties
- * immutable.
- */
-public final class Dme2PropertiesProvider {
-
-	private static final Logger LOG = LoggerFactory.getLogger(Dme2PropertiesProvider.class);
-
-	/**
-	 * The name of the environment variable to specify the configuration directory.
-	 */
-	private static final String SDNC_ROOT_DIR_ENV_VAR_KEY = "SDNC_CONFIG_DIR";
-
-	/**
-	 * the dme2 properties file name.
-	 */
-	private static final String DME2_PROPERTIES_FILE_NAME = "dme2.properties";
-
-	/**
-	 * the key for <code>proxyUrl</code>, which represents a CSV list of urls
-	 */
-	static final String PROXY_URL_KEY = "proxyUrl";
-
-	/**
-	 * indicates that proxy urls are separated by commas
-	 */
-	private static final String PROXY_URLS_VALUE_SEPARATOR = ",";
-
-	/**
-	 * the key for <code>aafUserName</code>
-	 */
-	static final String AAF_USERNAME_KEY = "aafUserName";
-
-	/**
-	 * the key for <code>aafPassword</code>
-	 */
-	static final String AAF_PASSWORD_KEY = "aafPassword";
-
-	/**
-	 * the key for <code>envContext</code>
-	 */
-	static final String ENV_CONTEXT_KEY = "envContext";
-
-	/**
-	 * the key for <code>routeOffer</code>
-	 */
-	static final String ROUTE_OFFER_KEY = "routeOffer";
-
-	/**
-	 * the key for <code>commonServiceVersion</code>
-	 */
-	static final String COMMON_SERVICE_VERSION_KEY = "commonServiceVersion";
-
-	/**
-	 * the key for <code>partner</code>
-	 */
-	static final String PARTNER_KEY = "partner";
-
-	private Optional<String[]> proxyUrls = Optional.empty();
-
-	private Optional<String> aafUsername = Optional.empty();
-
-	private Optional<String> aafPassword = Optional.empty();
-
-	private Optional<String> envContext = Optional.empty();
-
-	private Optional<String> routeOffer = Optional.empty();
-
-	private Optional<String> commonServiceVersion = Optional.empty();
-
-	private Optional<String> partner = Optional.empty();
-
-	/**
-	 * A prioritized list of strategies for resolving dme2 properties files.
-	 */
-	private Vector<PropertiesFileResolver> dme2PropertiesFileResolvers = new Vector<>();
-
-	/**
-	 * Instantiates the properties provider, which involves loading the appropriate
-	 * properties for dme2.
-	 */
-	public Dme2PropertiesProvider() {
-		this(DME2_PROPERTIES_FILE_NAME);
-	}
-
-	/**
-	 * Instantiates the properties provider, which involves loading the appropriate
-	 * properties for dme2.
-	 *
-	 * @param dme2Path
-	 *            location of the dme2.properties file
-	 */
-	@VisibleForTesting
-	Dme2PropertiesProvider(final String dme2FileName) {
-		dme2PropertiesFileResolvers
-				.add(new SdncConfigEnvVarFileResolver("Using property file (1) from environment variable"));
-		dme2PropertiesFileResolvers.add(new CoreDefaultFileResolver("Using property file (2) from default directory"));
-
-		dme2PropertiesFileResolvers
-				.add(new JREFileResolver("Using property file (3) from JRE argument", Dme2PropertiesProvider.class));
-		dme2PropertiesFileResolvers.add(new KarafRootFileResolver("Using property file (4) from karaf root", this));
-
-		File dme2File = getDme2File(dme2FileName);
-
-		init(dme2File);
-	}
-
-	private void init(final File dme2Path) {
-		final Properties properties;
-		try {
-			properties = getProperties(dme2Path);
-			this.proxyUrls = getProxyUrls(properties);
-			this.aafUsername = getAafUsername(properties);
-			this.aafPassword = getAafPassword(properties);
-			this.envContext = getEnvContext(properties);
-			this.routeOffer = getRouteOffer(properties);
-			this.commonServiceVersion = getCommonServiceVersion(properties);
-			this.partner = getPartner(properties);
-		} catch (final FileNotFoundException e) {
-
-			LOG.error("dme2.properties file could not be found at path: {}", dme2Path, e);
-		} catch (final IOException e) {
-			LOG.error("fatal error reading dme2.properties at path: {}", dme2Path, e);
-		}
-	}
-
-	/**
-	 * Reports the method chosen for properties resolution to the
-	 * <code>Logger</code>.
-	 *
-	 * @param message
-	 *            Some user friendly message
-	 * @param fileOptional
-	 *            The file location of the chosen properties file
-	 * @return the file location of the chosen properties file
-	 */
-	private static File reportSuccess(final String message, final Optional<File> fileOptional) {
-		if (fileOptional.isPresent()) {
-			final File file = fileOptional.get();
-			LOG.info("{} {}", message, file.getPath());
-			return file;
-		}
-		return null;
-	}
-
-	private File getDme2File(final String dme2Filename) {
-
-		for (final PropertiesFileResolver dblibPropertiesFileResolver : dme2PropertiesFileResolvers) {
-			final Optional<File> fileOptional = dblibPropertiesFileResolver.resolveFile(dme2Filename);
-			if (fileOptional.isPresent()) {
-				return reportSuccess(dblibPropertiesFileResolver.getSuccessfulResolutionMessage(), fileOptional);
-			}
-		}
-		return (new File(dme2Filename));
-	}
-
-	private static Properties getProperties(final File dme2File) throws IOException {
-
-		final Properties properties = new Properties();
-		properties.load(new FileReader(dme2File));
-		return properties;
-	}
-
-	private String getProxyUrl(final Properties properties) {
-		return properties.getProperty(PROXY_URL_KEY);
-	}
-
-	private Optional<String[]> getProxyUrls(final Properties properties) {
-		final String proxyUrlsValue = getProxyUrl(properties);
-		if (!Strings.isNullOrEmpty(proxyUrlsValue)) {
-			return Optional.ofNullable(proxyUrlsValue.split(PROXY_URLS_VALUE_SEPARATOR));
-		}
-		return Optional.empty();
-	}
-
-	public Optional<String[]> getProxyUrls() {
-		return this.proxyUrls;
-	}
-
-	private Optional<String> getAafUsername(final Properties properties) {
-		final String aafUsernameValue = properties.getProperty(AAF_USERNAME_KEY);
-		return Optional.ofNullable(aafUsernameValue);
-	}
-
-	Optional<String> getAafUsername() {
-		return this.aafUsername;
-	}
-
-	private Optional<String> getAafPassword(final Properties properties) {
-		final String aafPassword = properties.getProperty(AAF_PASSWORD_KEY);
-		return Optional.ofNullable(aafPassword);
-	}
-
-	Optional<String> getAafPassword() {
-		return this.aafPassword;
-	}
-
-	private Optional<String> getEnvContext(final Properties properties) {
-		final String envContext = properties.getProperty(ENV_CONTEXT_KEY);
-		return Optional.ofNullable(envContext);
-	}
-
-	Optional<String> getEnvContext() {
-		return this.envContext;
-	}
-
-	private Optional<String> getRouteOffer(final Properties properties) {
-		final String routeOffer = properties.getProperty(ROUTE_OFFER_KEY);
-		return Optional.ofNullable(routeOffer);
-	}
-
-	Optional<String> getRouteOffer() {
-		return this.routeOffer;
-	}
-
-	private Optional<String> getCommonServiceVersion(final Properties properties) {
-		final String commonServiceVersion = properties.getProperty(COMMON_SERVICE_VERSION_KEY);
-		return Optional.ofNullable(commonServiceVersion);
-	}
-
-	Optional<String> getCommonServiceVersion() {
-		return this.commonServiceVersion;
-	}
-
-	private Optional<String> getPartner(final Properties properties) {
-		final String partner = properties.getProperty(PARTNER_KEY);
-		return Optional.ofNullable(partner);
-	}
-
-	Optional<String> getPartner() {
-		return this.partner;
-	}
-}
diff --git a/sliPluginUtils/provider/src/main/resources/org/opendaylight/blueprint/slipluginutils-blueprint.xml b/sliPluginUtils/provider/src/main/resources/org/opendaylight/blueprint/slipluginutils-blueprint.xml
index c0952d2a2..283dbbaa9 100644
--- a/sliPluginUtils/provider/src/main/resources/org/opendaylight/blueprint/slipluginutils-blueprint.xml
+++ b/sliPluginUtils/provider/src/main/resources/org/opendaylight/blueprint/slipluginutils-blueprint.xml
@@ -1,19 +1,20 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
-           xmlns:odl="http://opendaylight.org/xmlns/blueprint/v1.0.0"
-           odl:use-default-for-reference-types="true">
-
-
-    <bean id="sliPluginUtils" class="org.onap.ccsdk.sli.core.slipluginutils.SliPluginUtils" />
-    <service ref="sliPluginUtils" interface="org.onap.ccsdk.sli.core.slipluginutils.SliPluginUtils" />
-
-    <bean id="sliStringUtils" class="org.onap.ccsdk.sli.core.slipluginutils.SliStringUtils" />
-    <service ref="sliStringUtils" interface="org.onap.ccsdk.sli.core.slipluginutils.SliStringUtils" />
-
-    <bean id="dme2Properties" class="org.onap.ccsdk.sli.core.slipluginutils.Dme2PropertiesProvider" />
-    <bean id="dme2" class="org.onap.ccsdk.sli.core.slipluginutils.DME2">
-        <argument ref="dme2Properties" />
-    </bean>
-    <service ref="dme2" interface="org.onap.ccsdk.sli.core.slipluginutils.DME2" />
-
+<?xml version="1.0" encoding="UTF-8"?>

+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"

+	xmlns:odl="http://opendaylight.org/xmlns/blueprint/v1.0.0"

+	odl:use-default-for-reference-types="true">

+

+	<bean id="sliPluginUtils" class="org.onap.ccsdk.sli.core.slipluginutils.SliPluginUtils" />

+	<service ref="sliPluginUtils"

+		interface="org.onap.ccsdk.sli.core.slipluginutils.SliPluginUtils" />

+

+	<bean id="sliStringUtils" class="org.onap.ccsdk.sli.core.slipluginutils.SliStringUtils" />

+	<service ref="sliStringUtils"

+		interface="org.onap.ccsdk.sli.core.slipluginutils.SliStringUtils" />

+

+	<bean id="dme2Factory" class="org.onap.ccsdk.sli.core.slipluginutils.Dme2Factory" />

+	<bean id="dme2" class="org.onap.ccsdk.sli.core.slipluginutils.DME2"

+		factory-ref="dme2Factory" factory-method="createDme2" />

+

+	<service ref="dme2" interface="org.onap.ccsdk.sli.core.slipluginutils.DME2" />

+

 </blueprint>
\ No newline at end of file