Add data-provider

data-provider and change to avoid heap overflow

Issue-ID: SDNC-994
Signed-off-by: herbert <herbert.eiselt@highstreet-technologies.com>
Change-Id: Ifcc6ce1198442e4b48fc08ba71108cfd5b5ca8aa

8 files changed, 937 insertions, 29 deletions

diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/HtAssert.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/HtAssert.java
new file mode 100644
index 000000000..873b5c947
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/HtAssert.java
@@ -0,0 +1,35 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH 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.features.sdnr.wt.common;
+
+public class HtAssert {
+
+
+    public static class HtNullable<T> {
+    }
+
+    public static void nonnull(Object ... oList) {
+        for (Object o : oList) {
+            if (o == null) {
+                throw new IllegalArgumentException("Null not allowed here.");
+            }
+        }
+    };
+
+}
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/Resources.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/Resources.java
index 3597f2e57..fe608a503 100644
--- a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/Resources.java
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/Resources.java
@@ -20,22 +20,15 @@ package org.onap.ccsdk.features.sdnr.wt.common;
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileFilter;
-import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
-import java.io.OutputStream;
 import java.net.MalformedURLException;
 import java.net.URISyntaxException;
 import java.net.URL;
 import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Collections;
 import java.util.Enumeration;
 import java.util.List;
-
-import org.json.JSONException;
-import org.json.JSONObject;
 import org.osgi.framework.Bundle;
 import org.osgi.framework.FrameworkUtil;
 import org.slf4j.Logger;
@@ -48,7 +41,7 @@ public class Resources {
     private static final String RESSOURCEROOT = "src/main/resources";
 
     private static URL getFileURL(Class<?> cls,String resFile) {
-    	Bundle b = FrameworkUtil.getBundle(cls);
+        Bundle b = FrameworkUtil.getBundle(cls);
         URL u = null;
         LOG.debug("try to get file {}", resFile);
         if (b == null) {
@@ -83,7 +76,7 @@ public class Resources {
 
     private static String readFile(final InputStream s) throws IOException {
         // read file
-    	final String LR = "\n";
+        final String LR = "\n";
         BufferedReader in = new BufferedReader(new InputStreamReader(s));
         StringBuilder sb = new StringBuilder();
         String inputLine;
@@ -97,7 +90,7 @@ public class Resources {
 
     private static List<URL> getFileURLs(Bundle b,String folder, final String filter, final boolean recursive)
             throws IOException {
-        
+
         List<URL> list = new ArrayList<>();
         if (b == null) {
             FileFilter ff = pathname -> {
@@ -185,7 +178,7 @@ public class Resources {
 //        return list;
 //    }
     public static String getFileContent( Class<?> cls, String resFile) {
-    	 LOG.debug("loading file {} from res", resFile);
+         LOG.debug("loading file {} from res", resFile);
          URL u = getFileURL(cls,resFile);
          String s=null;
          if (u == null) {
@@ -199,7 +192,7 @@ public class Resources {
          }
          return s;
 
-	}
+    }
 //    public static JSONObject getJSONFile(Class<?> cls,String resFile) {
 //        LOG.debug("loading json file {} from res", resFile);
 //        JSONObject o = null;
@@ -269,11 +262,11 @@ public class Resources {
 //        Collection<URL> urlCollection = new ArrayList<>();
 //        URL url = getUrlForRessource(cls,folder);
 //        if(url==null) {
-//        	return Collections.enumeration(urlCollection);
+//            return Collections.enumeration(urlCollection);
 //        }
 //        String path = url.getPath();
 //        File[] files = new File(path).listFiles();
-//        
+//
 //        if (files != null) {
 //            for (File f : files) {
 //                try {
@@ -290,7 +283,7 @@ public class Resources {
 //        }
 //
 //        return Collections.enumeration(urlCollection);
-//        
+//
 //    }
 
     public static URL getUrlForRessource(Class<?> cls,String fileOrDirectory) {
@@ -298,7 +291,7 @@ public class Resources {
         ClassLoader loader = cls.getClassLoader();
         URL url = loader.getResource(fileOrDirectory);
         if(url==null && fileOrDirectory.startsWith("/")) {
-        	url = loader.getResource(fileOrDirectory.substring(1));
+            url = loader.getResource(fileOrDirectory.substring(1));
         }
         return url;
     }
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/ResourcesFromDeviceManager.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/ResourcesFromDeviceManager.java
new file mode 100644
index 000000000..32a21a801
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/ResourcesFromDeviceManager.java
@@ -0,0 +1,340 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH 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.features.sdnr.wt.common;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileFilter;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.MalformedURLException;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.List;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.FrameworkUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ResourcesFromDeviceManager {
+
+    private static final Logger LOG = LoggerFactory.getLogger(ResourcesFromDeviceManager.class);
+
+    private static final String RESSOURCEROOT = "src/main/resources";
+
+    private static URL getFileURL(String resFile) {
+        Bundle b = FrameworkUtil.getBundle(ResourcesFromDeviceManager.class);
+        URL u = null;
+        LOG.debug("try to get file {}", resFile);
+        if (b == null) {
+            LOG.info("Load resource as file: {}", resFile);
+            u = getUrlForRessource(resFile);
+        } else {
+            LOG.info("Load resource from bundle: {}", resFile);
+            u = b.getEntry(resFile);
+        }
+        return u;
+    }
+
+    private static File getFile(String resFile) {
+        Bundle b = FrameworkUtil.getBundle(ResourcesFromDeviceManager.class);
+        File f = null;
+        LOG.debug("try to get file {}", resFile);
+        if (b == null) {
+            LOG.warn("cannot load bundle resources");
+            f = new File(RESSOURCEROOT + resFile);
+        } else {
+            try {
+                f = new File(b.getEntry(resFile).toURI());
+            } catch (URISyntaxException e) {
+                LOG.warn("Con not load file: {}",e.getMessage());
+            }
+        }
+        return f;
+    }
+
+    private static String readFile(final URL u) throws IOException {
+        return readFile(u.openStream());
+    }
+
+    private static String readFile(final InputStream s) throws IOException {
+        // read file
+        BufferedReader in = new BufferedReader(new InputStreamReader(s));
+        StringBuilder sb = new StringBuilder();
+        String inputLine;
+        while ((inputLine = in.readLine()) != null) {
+            sb.append(inputLine);
+        }
+        in.close();
+        s.close();
+        return sb.toString();
+    }
+
+    public static List<URL> getFileURLs(String folder, final String filter, final boolean recursive)
+            throws IOException {
+        Bundle b = FrameworkUtil.getBundle(ResourcesFromDeviceManager.class);
+        List<URL> list = new ArrayList<>();
+        if (b == null) {
+            FileFilter ff = pathname -> {
+                if (pathname.isFile()) {
+                    return pathname.getName().contains(filter);
+                } else {
+                    return true;
+                }
+            };
+            File ffolder = getFile(folder);
+            if (ffolder != null && ffolder.isDirectory()) {
+                File[] files = ffolder.listFiles(ff);
+                if (files != null && files.length > 0) {
+                    for (File f : files) {
+                        if (f.isFile()) {
+                            list.add(f.toURI().toURL());
+                        } else if (f.isDirectory() && recursive) {
+                            getFileURLsRecursive(f, ff, list);
+                        }
+                    }
+                }
+            }
+        } else {
+            getResourceURLsTreeRecurse(b, filter, b.getEntryPaths(folder), recursive, list);
+        }
+        return list;
+    }
+
+    private static void getFileURLsRecursive(File root, FileFilter ff, List<URL> list) throws MalformedURLException {
+        if (root != null && root.isDirectory()) {
+            File[] files = root.listFiles(ff);
+            if (files != null && files.length > 0) {
+                for (File f : files) {
+                    if (f.isFile()) {
+                        list.add(f.toURI().toURL());
+                    } else if (f.isDirectory()) {
+                        getFileURLsRecursive(f, ff, list);
+                    }
+                }
+            }
+        }
+
+    }
+
+    private static void getResourceURLsTreeRecurse(Bundle b, String filter, Enumeration<String> resource,
+            boolean recursive, List<URL> outp) throws IOException {
+        while (resource.hasMoreElements()) {
+            String name = resource.nextElement();
+            Enumeration<String> list = b.getEntryPaths(name);
+            if (list != null) {
+                if (recursive) {
+                    getResourceURLsTreeRecurse(b, filter, list, recursive, outp);
+                }
+            } else {
+                // Read
+                if (name.contains(filter)) {
+                    LOG.debug("add {} to list", name);
+                    outp.add(b.getEntry(name));
+                } else {
+                    LOG.debug("filtered out {}", name);
+                }
+            }
+        }
+    }
+
+    public static List<JSONObject> getJSONFiles(String folder, boolean recursive) {
+        List<JSONObject> list = new ArrayList<>();
+        List<URL> urls;
+        try {
+            urls = getFileURLs(folder, ".json", recursive);
+            LOG.debug("found {} files", urls.size());
+        } catch (IOException e1) {
+            urls = new ArrayList<>();
+            LOG.warn("failed to get urls from resfolder {} : {}", folder, e1.getMessage());
+        }
+        for (URL u : urls) {
+            LOG.debug("try to parse " + u.toString());
+            try {
+                JSONObject o = new JSONObject(readFile(u));
+                list.add(o);
+            } catch (JSONException | IOException e) {
+                LOG.warn("problem reading/parsing file {} : {}", u, e.getMessage());
+            }
+        }
+        return list;
+    }
+
+    public static JSONObject getJSONFile(String resFile) {
+        LOG.debug("loading json file {} from res", resFile);
+        URL u = getFileURL(resFile);
+        if (u == null) {
+            LOG.warn("cannot find resfile: {}", resFile);
+            return null;
+        }
+        JSONObject o = null;
+        try {
+            // parse to jsonobject
+            o = new JSONObject(readFile(u));
+        } catch (Exception e) {
+            LOG.warn("problem reading/parsing file: {}", e.getMessage());
+        }
+        return o;
+    }
+
+    /**
+     * Used for reading plugins from resource files /elasticsearch/plugins/head
+     * /etc/elasticsearch-plugins /elasticsearch/plugins
+     *
+     * @param resFolder resource folder pointing to the related files
+     * @param dstFolder destination
+     * @param rootDirToRemove part from full path to remove
+     * @return true if files could be extracted
+     */
+    public static boolean copyFolderInto(String resFolder, String dstFolder, String rootDirToRemove) {
+
+        Enumeration<URL> urls = null;
+        Bundle b = FrameworkUtil.getBundle(ResourcesFromDeviceManager.class);
+        if (b == null) {
+            LOG.info("Running in file text.");
+            urls = getResourceFolderFiles(resFolder);
+        } else {
+            urls = b.findEntries(resFolder, "*", true);
+        }
+
+        boolean success = true;
+        URL srcUrl;
+        String srcFilename;
+        String dstFilename;
+        while (urls.hasMoreElements()) {
+            srcUrl = urls.nextElement();
+            srcFilename = srcUrl.getFile();
+
+            if (srcFilename.endsWith("/")) {
+                LOG.debug("Skip directory: {}", srcFilename);
+                continue;
+            }
+
+            LOG.debug("try to copy res {} to {}", srcFilename, dstFolder);
+            if (rootDirToRemove != null) {
+                srcFilename =
+                        srcFilename.substring(srcFilename.indexOf(rootDirToRemove) + rootDirToRemove.length() + 1);
+                LOG.debug("dstfilename trimmed to {}", srcFilename);
+            }
+            dstFilename = dstFolder + "/" + srcFilename;
+            try {
+                if (!extractFileTo(srcUrl, new File(dstFilename))) {
+                    success = false;
+                }
+            } catch (Exception e) {
+                LOG.warn("problem copying res {} to {}: {}", srcFilename, dstFilename, e.getMessage());
+            }
+        }
+
+        return success;
+
+    }
+
+    private static Enumeration<URL> getResourceFolderFiles(String folder) {
+        LOG.debug("Get resource: {}", folder);
+        URL url = getUrlForRessource(folder);
+        String path = url.getPath();
+        File[] files = new File(path).listFiles();
+        Collection<URL> urlCollection = new ArrayList<>();
+
+        if (files != null) {
+            for (File f : files) {
+                try {
+                    if (f.isDirectory()) {
+                        urlCollection.addAll(Collections.list(getResourceFolderFiles(folder + "/" + f.getName())));
+                    } else {
+                        urlCollection.add(f.toURI().toURL());
+                    }
+                } catch (MalformedURLException e) {
+                    LOG.error("Can not read ressources", e);
+                    break;
+                }
+            }
+        }
+
+        Enumeration<URL> urls = Collections.enumeration(urlCollection);
+        return urls;
+    }
+
+    private static URL getUrlForRessource(String fileOrDirectory) {
+        //ClassLoader loader = Thread.currentThread().getContextClassLoader();
+        ClassLoader loader = ResourcesFromDeviceManager.class.getClassLoader();
+        URL url = loader.getResource(fileOrDirectory);
+        if(url==null && fileOrDirectory.startsWith("/")) {
+        	url = loader.getResource(fileOrDirectory.substring(1));
+        }
+        return url;
+    }
+
+    public static boolean extractFileTo(String resFile, File oFile) {
+        if (oFile == null) {
+            return false;
+        }
+        LOG.debug("try to copy {} from res to {}", resFile, oFile.getAbsolutePath());
+        URL u = getFileURL(resFile);
+        if (u == null) {
+            LOG.warn("cannot find resfile: {}", resFile);
+            return false;
+        }
+        return extractFileTo(u, oFile);
+    }
+
+    public static boolean extractFileTo(URL u, File oFile) {
+
+        if (oFile.isDirectory()) {
+            oFile.mkdirs();
+            return true;
+        } else {
+            oFile.getParentFile().mkdirs();
+        }
+
+        if (!oFile.exists()) {
+            try {
+                oFile.createNewFile();
+            } catch (IOException e) {
+                LOG.warn("problem creating file {}: {}", oFile.getAbsoluteFile(), e.getMessage());
+            }
+        }
+        try (InputStream in = u.openStream(); OutputStream outStream = new FileOutputStream(oFile);) {
+
+            int theInt;
+            while ((theInt = in.read()) >= 0) {
+                outStream.write(theInt);
+            }
+            in.close();
+            outStream.flush();
+            outStream.close();
+            LOG.debug("file written successfully");
+        } catch (IOException e) {
+            LOG.error("problem writing file: {}", e.getMessage());
+            return false;
+        }
+        return true;
+    }
+
+}
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/configuration/subtypes/Section.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/configuration/subtypes/Section.java
index a0e21be01..094da6389 100644
--- a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/configuration/subtypes/Section.java
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/configuration/subtypes/Section.java
@@ -50,7 +50,7 @@ public class Section {
     }
 
     public String getProperty(String key) {
-        return this.getProperty(key, null);
+        return this.getProperty(key, "");
     }
 
     public String getProperty(String key, String defValue) {
@@ -61,7 +61,7 @@ public class Section {
     }
 
     public String getName() {
-    	return name;
+        return name;
     }
 
     public void setProperty(String key, String value) {
@@ -70,7 +70,7 @@ public class Section {
             key = key.substring(1);
         }
         if (this.values.containsKey(key)) {
-        	this.values.get(key).setValue(value).setIsUncommented(isuncommented);
+            this.values.get(key).setValue(value).setIsUncommented(isuncommented);
         } else {
             this.values.put(key, new SectionValue(value,isuncommented));
         }
@@ -128,7 +128,7 @@ public class Section {
             lines.add("[" + this.name + "]");
         }
         for (Entry<String, SectionValue> entry : this.values.entrySet()) {
-        	SectionValue sectionValue = entry.getValue();
+            SectionValue sectionValue = entry.getValue();
             if (sectionValue.getComments().size() > 0) {
                 for (String comment : sectionValue.getComments()) {
                     lines.add(comment);
@@ -173,11 +173,11 @@ public class Section {
 
     public Optional<Long> getLong(String key) {
         String v = this.getProperty(key);
-		try {
-			return Optional.of(Long.parseLong(v));
-		} catch (NumberFormatException e) {
-		}
-       	return Optional.empty();
+        try {
+            return Optional.of(Long.parseLong(v));
+        } catch (NumberFormatException e) {
+        }
+           return Optional.empty();
     }
 
     public boolean hasValues() {
@@ -188,9 +188,9 @@ public class Section {
         return this.values.containsKey(key);
     }
 
-	@Override
-	public String toString() {
-		return "Section [name=" + name + ", rawLines=" + rawLines + ", values=" + values + "]";
-	}
+    @Override
+    public String toString() {
+        return "Section [name=" + name + ", rawLines=" + rawLines + ", values=" + values + "]";
+    }
 
 }
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/http/BaseHTTPClientFromDevicemanager.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/http/BaseHTTPClientFromDevicemanager.java
new file mode 100644
index 000000000..e330fb42a
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/http/BaseHTTPClientFromDevicemanager.java
@@ -0,0 +1,327 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH 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.features.sdnr.wt.common.http;
+
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.security.KeyFactory;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.security.interfaces.RSAPrivateKey;
+import java.security.spec.InvalidKeySpecException;
+import java.security.spec.PKCS8EncodedKeySpec;
+import java.util.Base64;
+import java.util.Map;
+
+import javax.annotation.Nonnull;
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.KeyManager;
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManager;
+import javax.xml.bind.DatatypeConverter;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class BaseHTTPClientFromDevicemanager {
+
+    private static Logger LOG = LoggerFactory.getLogger(BaseHTTPClientFromDevicemanager.class);
+    private static final int SSLCERT_NONE = -1;
+    private static final int SSLCERT_PCKS = 0;
+    private static final int SSLCERT_PEM = 1;
+    private static final int BUFSIZE = 1024;
+    private static final Charset CHARSET = StandardCharsets.UTF_8;
+    private static final String SSLCONTEXT = "TLSv1.2";
+    private static final int DEFAULT_HTTP_TIMEOUT_MS = 30000; // in ms
+
+    private final boolean trustAll;
+    private final String baseUrl;
+
+    private int timeout = DEFAULT_HTTP_TIMEOUT_MS;
+    private SSLContext sc = null;
+
+    public BaseHTTPClientFromDevicemanager(String base) {
+        this(base, false);
+    }
+
+    public BaseHTTPClientFromDevicemanager(String base, boolean trustAllCerts) {
+        this(base, trustAllCerts, null, null, SSLCERT_NONE);
+    }
+
+    public BaseHTTPClientFromDevicemanager(String base, boolean trustAllCerts, String certFilename, String passphrase, int sslCertType) {
+        this.baseUrl = base;
+        this.trustAll = trustAllCerts;
+        try {
+            sc = setupSsl(trustAll, certFilename, passphrase, sslCertType);
+        } catch (KeyManagementException | NoSuchAlgorithmException | UnrecoverableKeyException | CertificateException
+                | KeyStoreException | IOException | InvalidKeySpecException e) {
+            LOG.warn("problem ssl setup: " + e.getMessage());
+        }
+    }
+
+    protected @Nonnull BaseHTTPResponseFromDevicemanager sendRequest(String uri, String method, String body, Map<String, String> headers)
+            throws IOException {
+        return this.sendRequest(uri, method, body != null ? body.getBytes(CHARSET) : null, headers);
+    }
+
+    protected @Nonnull BaseHTTPResponseFromDevicemanager sendRequest(String uri, String method, byte[] body, Map<String, String> headers)
+            throws IOException {
+        if (uri == null) {
+            uri = "";
+        }
+        String surl = this.baseUrl;
+        if (!surl.endsWith("/") && uri.length() > 0) {
+            surl += "/";
+        }
+        if (uri.startsWith("/")) {
+            uri = uri.substring(1);
+        }
+        surl += uri;
+        LOG.debug("try to send request with url=" + this.baseUrl + uri + " as method=" + method);
+        LOG.trace("body:" + (body == null ? "null" : new String(body, CHARSET)));
+        URL url = new URL(surl);
+        URLConnection http = url.openConnection();
+        http.setConnectTimeout(this.timeout);
+        if (surl.toString().startsWith("https")) {
+            if (sc != null) {
+                ((HttpsURLConnection) http).setSSLSocketFactory(sc.getSocketFactory());
+                if (trustAll) {
+                    LOG.debug("trusting all certs");
+                    HostnameVerifier allHostsValid = (hostname, session) -> true;
+                    ((HttpsURLConnection) http).setHostnameVerifier(allHostsValid);
+                }
+            } else // Should never happen
+            {
+                LOG.warn("No SSL context available");
+                return new BaseHTTPResponseFromDevicemanager(-1, "");
+            }
+        }
+        ((HttpURLConnection) http).setRequestMethod(method);
+        http.setDoOutput(true);
+        if (headers != null && headers.size() > 0) {
+            for (String key : headers.keySet()) {
+                http.setRequestProperty(key, headers.get(key));
+                LOG.trace("set http header " + key + ": " + headers.get(key));
+            }
+        }
+        byte[] buffer = new byte[BUFSIZE];
+        int len = 0, lensum = 0;
+        // send request
+        // Send the message to destination
+        if (!method.equals("GET") && body != null && body.length > 0) {
+            try (OutputStream output = http.getOutputStream()) {
+                output.write(body);
+            }
+        }
+        // Receive answer
+        int responseCode = ((HttpURLConnection) http).getResponseCode();
+        String sresponse = "";
+        InputStream response = null;
+        try {
+            if (responseCode >= 200 && responseCode < 300) {
+                response = http.getInputStream();
+            } else {
+                response = ((HttpURLConnection) http).getErrorStream();
+                if (response == null) {
+                    response = http.getInputStream();
+                }
+            }
+            if (response != null) {
+                while (true) {
+                    len = response.read(buffer, 0, BUFSIZE);
+                    if (len <= 0) {
+                        break;
+                    }
+                    lensum += len;
+                    sresponse += new String(buffer, 0, len, CHARSET);
+                }
+            } else {
+                LOG.debug("response is null");
+            }
+        } catch (Exception e) {
+            LOG.debug("No response. ", e);
+        } finally {
+            if (response != null) {
+                response.close();
+            }
+        }
+        LOG.debug("ResponseCode: " + responseCode);
+        LOG.trace("Response (len:{}): {}", String.valueOf(lensum), sresponse);
+        return new BaseHTTPResponseFromDevicemanager(responseCode, sresponse);
+    }
+
+    public static SSLContext setupSsl(boolean trustall)
+            throws NoSuchAlgorithmException, KeyManagementException, CertificateException, FileNotFoundException,
+            IOException, UnrecoverableKeyException, KeyStoreException, InvalidKeySpecException {
+
+        return setupSsl(trustall, null, null, SSLCERT_NONE);
+    }
+
+    /**
+     * @param keyFilename filename for key file
+     * @param certFilename filename for cert file
+     * @throws NoSuchAlgorithmException
+     * @throws KeyManagementException
+     * @throws IOException
+     * @throws FileNotFoundException
+     * @throws CertificateException
+     * @throws KeyStoreException
+     * @throws UnrecoverableKeyException
+     * @throws InvalidKeySpecException
+     */
+    /**
+     * Setup of SSLContext
+     *
+     * @param trustall true to switch of certificate verification
+     * @param certFilename filename for certificate file
+     * @param passPhrase for certificate
+     * @param certType of certificate
+     * @return SSL Context according to parameters
+     * @throws NoSuchAlgorithmException according name
+     * @throws KeyManagementException according name
+     * @throws CertificateException according name
+     * @throws FileNotFoundException according name
+     * @throws IOException according name
+     * @throws UnrecoverableKeyException according name
+     * @throws KeyStoreException according name
+     * @throws InvalidKeySpecException according name
+     */
+    public static SSLContext setupSsl(boolean trustall, String certFilename, String passPhrase, int certType)
+            throws NoSuchAlgorithmException, KeyManagementException, CertificateException, FileNotFoundException,
+            IOException, UnrecoverableKeyException, KeyStoreException, InvalidKeySpecException {
+
+        SSLContext sc = SSLContext.getInstance(SSLCONTEXT);
+        TrustManager[] trustCerts = null;
+        if (trustall) {
+            trustCerts = new TrustManager[] {new javax.net.ssl.X509TrustManager() {
+                @Override
+                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+                    return null;
+                }
+
+                @Override
+                public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {}
+
+                @Override
+                public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {}
+            }};
+
+        }
+        KeyManager[] kms = null;
+        if (certFilename != null && passPhrase != null && !certFilename.isEmpty() && !passPhrase.isEmpty()) {
+            if (certType == SSLCERT_PCKS) {
+                LOG.debug("try to load pcks file " + certFilename + " with passphrase=" + passPhrase);
+                KeyStore keyStore = KeyStore.getInstance("PKCS12");
+                FileInputStream fileInputStream = new FileInputStream(certFilename);
+                keyStore.load(fileInputStream, passPhrase.toCharArray());
+                KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
+                kmf.init(keyStore, passPhrase.toCharArray());
+                kms = kmf.getKeyManagers();
+                fileInputStream.close();
+                LOG.debug("successful");
+
+            } else if (certType == SSLCERT_PEM) {
+                LOG.debug("try to load pem files cert=" + certFilename + " key=" + passPhrase);
+                File fCert = new File(certFilename);
+                File fKey = new File(passPhrase);
+                KeyStore keyStore = KeyStore.getInstance("JKS");
+                keyStore.load(null);
+                byte[] certBytes = parseDERFromPEM(Files.readAllBytes(fCert.toPath()), "-----BEGIN CERTIFICATE-----",
+                        "-----END CERTIFICATE-----");
+                byte[] keyBytes = parseDERFromPEM(Files.readAllBytes(fKey.toPath()), "-----BEGIN PRIVATE KEY-----",
+                        "-----END PRIVATE KEY-----");
+
+                X509Certificate cert = generateCertificateFromDER(certBytes);
+                RSAPrivateKey key = generatePrivateKeyFromDER(keyBytes);
+                keyStore.setCertificateEntry("cert-alias", cert);
+                keyStore.setKeyEntry("key-alias", key, "changeit".toCharArray(), new Certificate[] {cert});
+
+                KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509");
+                kmf.init(keyStore, "changeit".toCharArray());
+                kms = kmf.getKeyManagers();
+                LOG.debug("successful");
+            }
+        }
+        // Init the SSLContext with a TrustManager[] and SecureRandom()
+        sc.init(kms, trustCerts, new java.security.SecureRandom());
+        return sc;
+    }
+
+    protected static byte[] parseDERFromPEM(byte[] pem, String beginDelimiter, String endDelimiter) {
+        String data = new String(pem);
+        String[] tokens = data.split(beginDelimiter);
+        tokens = tokens[1].split(endDelimiter);
+        return DatatypeConverter.parseBase64Binary(tokens[0]);
+    }
+
+    protected static RSAPrivateKey generatePrivateKeyFromDER(byte[] keyBytes)
+            throws InvalidKeySpecException, NoSuchAlgorithmException {
+        PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(keyBytes);
+
+        KeyFactory factory = KeyFactory.getInstance("RSA");
+
+        return (RSAPrivateKey) factory.generatePrivate(spec);
+    }
+
+    protected static X509Certificate generateCertificateFromDER(byte[] certBytes) throws CertificateException {
+        CertificateFactory factory = CertificateFactory.getInstance("X.509");
+
+        return (X509Certificate) factory.generateCertificate(new ByteArrayInputStream(certBytes));
+    }
+
+    public static String getAuthorizationHeaderValue(String username, String password) {
+        return "Basic " + new String(Base64.getEncoder().encode((username + ":" + password).getBytes()));
+    }
+
+    public void setTimeout(int timeout) {
+        this.timeout = timeout;
+    }
+
+    public static int getSslCertPcks() {
+        return SSLCERT_PCKS;
+    }
+
+    public static int getSslCertNone() {
+        return SSLCERT_NONE;
+    }
+
+    public static int getSslCertPEM() {
+        return SSLCERT_PEM;
+    }
+
+}
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/http/BaseHTTPResponseFromDevicemanager.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/http/BaseHTTPResponseFromDevicemanager.java
new file mode 100644
index 000000000..0fd0a6459
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/http/BaseHTTPResponseFromDevicemanager.java
@@ -0,0 +1,38 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH 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.features.sdnr.wt.common.http;
+
+public class BaseHTTPResponseFromDevicemanager {
+
+	public static final int CODE404 = 404;
+	public static final int CODE200 = 200;
+	public static final BaseHTTPResponseFromDevicemanager UNKNOWN = new BaseHTTPResponseFromDevicemanager(-1, "");
+	public final int code;
+	public final String body;
+
+	public BaseHTTPResponseFromDevicemanager(int code,String body)
+	{
+		this.code=code;
+		this.body=body;
+	}
+
+	@Override
+	public String toString() {
+		return "BaseHTTPResponse [code=" + code + ", body=" + body + "]";
+	}
+}
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/util/Environment.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/util/Environment.java
new file mode 100644
index 000000000..1ac55ad15
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/util/Environment.java
@@ -0,0 +1,46 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH 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.features.sdnr.wt.common.util;
+
+import java.net.Inet4Address;
+import java.net.UnknownHostException;
+import java.util.Map;
+
+public class Environment {
+
+	public static String getVar(String v)
+	{
+		if(v.equals("$HOSTNAME"))
+		{
+			String s=null;
+			try {
+				s = Inet4Address.getLocalHost().getHostName();
+			} catch (UnknownHostException e) {
+
+			}
+			if(s!=null && s.length()>0)
+				return s;
+		}
+		Map<String, String> env = System.getenv();
+        for (String envName : env.keySet()) {
+           if(envName!=null && envName.equals(v))
+              return env.get(envName);
+        }
+        return null;
+	}
+}
diff --git a/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/util/FileWatchdog.java b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/util/FileWatchdog.java
new file mode 100644
index 000000000..55fe83300
--- /dev/null
+++ b/sdnr/wt/common/src/main/java/org/onap/ccsdk/features/sdnr/wt/common/util/FileWatchdog.java
@@ -0,0 +1,129 @@
+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH 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==========================================================================
+ ******************************************************************************/
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
+ * agreements. See the NOTICE file distributed with this work for additional information regarding
+ * copyright ownership. The ASF licenses this file to You 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.features.sdnr.wt.common.util;
+
+import java.io.File;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Check every now and then that a certain file has not changed. If it has, then call the
+ * {@link #doOnChange} method.
+ *
+ * @author JunHo Yoon
+ * @since 3.1.1
+ */
+public abstract class FileWatchdog extends Thread {
+    private static final Logger LOGGER = LoggerFactory.getLogger(FileWatchdog.class);
+    /**
+     * The default delay between every file modification check, set to 60 seconds.
+     */
+    public static final long DEFAULT_DELAY = 60000;
+    /**
+     * The name of the file to observe for changes.
+     */
+    private final String filename;
+
+    /**
+     * The delay to observe between every check. By default set {@link #DEFAULT_DELAY}.
+     */
+    private long delay = DEFAULT_DELAY;
+
+    private final File file;
+    private long lastModified = 0;
+    private boolean warnedAlready = false;
+
+    protected FileWatchdog(String filename) {
+        this.filename = filename;
+        file = new File(filename);
+        setDaemon(true);
+        checkAndConfigure();
+    }
+
+    /**
+     * Set the delay to observe between each check of the file changes.
+     *
+     * @param delay the frequency of file watch.
+     */
+    public void setDelay(long delay) {
+        this.delay = delay;
+    }
+
+    /**
+     * abstract method to be run when the file is changed.
+     */
+    protected abstract void doOnChange();
+
+    protected void checkAndConfigure() {
+        boolean fileExists;
+        try {
+            fileExists = file.exists();
+        } catch (SecurityException e) {
+            LOGGER.warn("Was not allowed to read check file existence, file:[{}].",filename);
+            this.interrupt(); // there is no point in continuing
+            return;
+        }
+
+        if (fileExists) {
+            long l = file.lastModified(); // this can also throw a
+            if (lastModified == 0) {
+                lastModified = l; // is very unlikely.
+            }
+            if (l > lastModified) { // however, if we reached this point this
+                lastModified = l; // is very unlikely.
+                doOnChange();
+                warnedAlready = false;
+            }
+        } else {
+            if (!warnedAlready) {
+                LOGGER.debug("[{}] does not exist.", filename);
+                warnedAlready = true;
+            }
+        }
+    }
+
+    @Override
+    public void run() {
+        while (!isInterrupted()) {
+            checkAndConfigure();
+            try {
+                Thread.sleep(delay);
+            } catch (InterruptedException e) {
+                LOGGER.debug("Interrupted sleep. {}", e.getMessage());
+                Thread.currentThread().interrupt();
+            }
+        }
+        LOGGER.debug("Stoppen file watchdog for file {}", filename);
+    }
+}