Added SDNC MDSAL Data Migrator Functionality.

Change-Id: I63ec1a4674d3a3cc6b39708ddee18ae7f9040b1c
Issue-ID: SDNC-223
Signed-off-by: ankitbhatt <ankit.bhatt@amdocs.com>

Former-commit-id: c4c27b78ff6b4a8f22553ef3d19aec67edd17482

22 files changed, 1587 insertions, 0 deletions

diff --git a/data-migrator/pom.xml b/data-migrator/pom.xml
new file mode 100644
index 00000000..f05f3709
--- /dev/null
+++ b/data-migrator/pom.xml
@@ -0,0 +1,139 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onap.sdnc.oam</groupId>
+        <artifactId>sdnc-oam</artifactId>
+        <version>1.5.0-SNAPSHOT</version>
+    </parent>
+    
+    <groupId>org.onap.sdnc.oam</groupId>
+    <artifactId>data-migrator</artifactId>
+    <version>1.5.0-SNAPSHOT</version>
+    <packaging>jar</packaging>
+
+    <name>sdnc-oam :: data-migrator</name>
+    <description>MDSAL Data Migrator</description>
+
+    <properties>
+        <fasterxml.jackson.version>2.9.4</fasterxml.jackson.version>
+        <velocity.version>2.0</velocity.version>
+        <skip.SWM>true</skip.SWM>
+        <maven.build.timestamp.format>yyyyMMdd'T'HHmmss'Z'</maven.build.timestamp.format>
+        <build.number>${maven.build.timestamp}</build.number>
+        <SWM_VERSION>${project.version}-${build.number}</SWM_VERSION>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>1.7.21</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-log4j12</artifactId>
+            <version>1.6.1</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>log4j</groupId>
+            <artifactId>log4j</artifactId>
+            <version>1.2.17</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.gson</groupId>
+            <artifactId>gson</artifactId>
+            <version>2.8.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.5</version>
+        </dependency>
+        <dependency>
+            <groupId>org.reflections</groupId>
+            <artifactId>reflections</artifactId>
+            <version>0.9.9-RC1</version>
+        </dependency>
+        <dependency>
+            <groupId>com.beust</groupId>
+            <artifactId>jcommander</artifactId>
+            <version>1.48</version>
+        </dependency>
+        <dependency>
+            <groupId>com.github.tomakehurst</groupId>
+            <artifactId>wiremock-standalone</artifactId>
+            <version>2.18.0</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+
+            <!-- ================================================== -->
+            <!-- Set the JDK compiler version. -->
+            <!-- ================================================== -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>2.5.1</version>
+                <inherited>true</inherited>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>2.6</version>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addClasspath>true</addClasspath>
+                            <mainClass>org.onap.sdnc.oam.datamigrator.DataMigration</mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
+            <plugin>
+                <artifactId>maven-assembly-plugin</artifactId>
+                <version>2.6</version>
+                <executions>
+                    <execution>
+                        <id>create-zip</id>
+                        <goals>
+                            <goal>single</goal>
+                        </goals>
+                        <phase>package</phase>
+                        <configuration>
+                            <attach>true</attach>
+                            <finalName>${project.artifactId}.${project.version}</finalName>
+                            <attach>true</attach>
+                            <descriptors>
+                                <descriptor>src/assembly/assemble_zip.xml</descriptor>
+                            </descriptors>
+                            <appendAssemblyId>false</appendAssemblyId>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+
+        </plugins>
+    </build>
+</project>
diff --git a/data-migrator/src/assembly/assemble_zip.xml b/data-migrator/src/assembly/assemble_zip.xml
new file mode 100644
index 00000000..604adf30
--- /dev/null
+++ b/data-migrator/src/assembly/assemble_zip.xml
@@ -0,0 +1,59 @@
+<!--
+  ============LICENSE_START=======================================================
+  ONAP : SDNC
+  ================================================================================
+  Copyright (C) 2019 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=========================================================
+  -->
+
+<!-- Defines how we build the .zip file which is our distribution. -->
+
+<assembly
+	xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.0 http://maven.apache.org/xsd/assembly-1.1.0.xsd">
+	<id>assemble_zip</id>
+	<formats>
+		<format>zip</format>
+	</formats>
+
+	<includeBaseDirectory>false</includeBaseDirectory>
+
+	<fileSets>
+		<fileSet>
+			<directory>src/main/scripts</directory>
+			<outputDirectory>bin</outputDirectory>
+		</fileSet>
+		<fileSet>
+			<directory>target</directory>
+			<outputDirectory>lib</outputDirectory>
+			<includes>
+				<include>*.jar</include>
+			</includes>
+		</fileSet>
+		<fileSet>
+			<directory>src/main/resources</directory>
+			<outputDirectory>properties</outputDirectory>
+			<includes>
+				<include>*.properties</include>
+			</includes>
+		</fileSet>
+	</fileSets>
+	<dependencySets>
+		<dependencySet>
+			<outputDirectory>lib</outputDirectory>
+			<useProjectArtifact>true</useProjectArtifact>
+			<scope>runtime</scope>
+		</dependencySet>
+	</dependencySets>
+</assembly>
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/DataMigration.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/DataMigration.java
new file mode 100644
index 00000000..ac53f448
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/DataMigration.java
@@ -0,0 +1,39 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class DataMigration {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DataMigration.class);
+
+    public static void main(String[] args) {
+        try {
+            DataMigrationInternal dataMigrationInternal = new DataMigrationInternal(LOG);
+            dataMigrationInternal.run(args);
+        }catch (Exception e){
+            e.printStackTrace();
+            LOG.error("Error in DataMigration" + e.getMessage());
+        }
+        return;
+    }
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/DataMigrationInternal.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/DataMigrationInternal.java
new file mode 100644
index 00000000..ae497235
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/DataMigrationInternal.java
@@ -0,0 +1,148 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator;
+
+import com.beust.jcommander.JCommander;
+import com.beust.jcommander.Parameter;
+import com.beust.jcommander.Strings;
+import org.onap.sdnc.oam.datamigrator.common.Description;
+import org.onap.sdnc.oam.datamigrator.common.MigratorConfiguration;
+import org.onap.sdnc.oam.datamigrator.common.Operation;
+import org.onap.sdnc.oam.datamigrator.migrators.Migrator;
+import org.reflections.Reflections;
+import org.slf4j.Logger;
+
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class DataMigrationInternal {
+
+    private final Logger log;
+
+    public DataMigrationInternal(Logger log) {
+        this.log = log;
+    }
+
+    private void logAndPrint(String msg) {
+        System.out.println(msg);
+        log.info(msg);
+    }
+
+    public void run(String[] args){
+        CommandLineArgs cArgs = new CommandLineArgs();
+        JCommander jCommander = new JCommander(cArgs, args);
+        jCommander.setProgramName(DataMigration.class.getSimpleName());
+
+        if (cArgs.help) {
+            jCommander.usage();
+            return;
+        }
+
+        Set<Class<? extends Migrator>> migratorList = getMigratorList();
+        if(cArgs.scripts.size() > 0){
+            migratorList = migratorList.stream().filter(aClass -> cArgs.scripts.contains(aClass.getSimpleName())).collect(Collectors.toSet());
+        }
+        if(cArgs.excludeClasses.size() > 0){
+            migratorList = migratorList.stream().filter(aClass -> !cArgs.excludeClasses.contains(aClass.getSimpleName())).collect(Collectors.toSet());
+        }
+
+        if(migratorList.size()>0) {
+            logAndPrint("Total number of available migrations: " + migratorList.size());
+            if(cArgs.list) {
+                logAndPrint("List of available migrations:");
+                for (Class<? extends Migrator> migrator : migratorList) {
+                    if(migrator.getAnnotation(Description.class) != null && !migrator.getAnnotation(Description.class).value().isEmpty()) {
+                        logAndPrint(migrator.getSimpleName()+ ": " + migrator.getAnnotation(Description.class).value() );
+                    }else {
+                        logAndPrint(migrator.getSimpleName());
+                    }
+                }
+            }else {
+                Operation operation;
+                try {
+                    operation = Operation.valueOf(cArgs.operation.toUpperCase());
+                    logAndPrint("Starting operation: " + operation.name());
+                }catch (IllegalArgumentException e) {
+                    logAndPrint("Invalid operation: " + cArgs.operation +". Supported operations are: Migrate, Backup, Restore.");
+                    return;
+                }
+                boolean success = true;
+                MigratorConfiguration config;
+                if(!Strings.isStringEmpty(cArgs.config)){
+                    config = new MigratorConfiguration(cArgs.config);
+                }else {
+                    logAndPrint("No external configuration provided. Initializing Default configuration.");
+                    config = new MigratorConfiguration();
+                }
+                for (Class<? extends Migrator> migratorClass : migratorList) {
+                    logAndPrint("Started executing migrator: "+ migratorClass.getSimpleName());
+                    try {
+                        Migrator migrator =  migratorClass.newInstance();
+                        migrator.init(config);
+                        migrator.run(operation);
+                        success = success && migrator.isSuccess();
+                    } catch (InstantiationException | IllegalAccessException e) {
+                        logAndPrint("Error instantiating migrator: " + migratorClass);
+                        success=false;
+                    }
+                    logAndPrint("Completed execution for migrator "+ migratorClass.getSimpleName() +" with status: " + success);
+                }
+                if(success){
+                    logAndPrint(operation.name()+ " operation completed Successfully.");
+                }else{
+                    logAndPrint("Error during "+ operation.name() +" operation. Check logs for details.");
+                }
+            }
+        }else{
+            logAndPrint("No migrations available.");
+        }
+    }
+
+    private Set<Class<? extends Migrator>> getMigratorList() {
+        Reflections reflections = new Reflections("org.onap.sdnc.oam.datamigrator.migrators");
+        return reflections.getSubTypesOf(Migrator.class).stream().filter(aClass -> !Modifier.isAbstract(aClass.getModifiers())).collect(Collectors.toSet());
+    }
+
+    class CommandLineArgs {
+
+        @Parameter(names = "--h", help = true)
+        public boolean help;
+
+        @Parameter(names = "-o", description = "Operation to be performed. Default is Migrate. Supported operations: Migrate , Backup , Restore.")
+        public String operation = "Migrate";
+
+        @Parameter(names = "-c", description = "Configuration File path / directory")
+        public String config;
+
+        @Parameter(names = "-m", description = "Names of migration scripts to run")
+        public List<String> scripts = new ArrayList<>();
+
+        @Parameter(names = "-l", description = "List the available of migrations")
+        public boolean list = false;
+
+        @Parameter(names = "-e", description = "Exclude list of migrator classes")
+        public List<String> excludeClasses = new ArrayList<>();
+    }
+
+
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/Description.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/Description.java
new file mode 100644
index 00000000..3eaf562d
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/Description.java
@@ -0,0 +1,31 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.common;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface Description {
+    String value() default "";
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/MigratorConfiguration.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/MigratorConfiguration.java
new file mode 100644
index 00000000..40a1b920
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/MigratorConfiguration.java
@@ -0,0 +1,118 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.common;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Properties;
+
+public class MigratorConfiguration {
+
+    private String sourceHost ;
+    private String sourceUser ;
+    private String sourcePassword ;
+    private String targetHost ;
+    private String targetUser ;
+    private String targetPassword ;
+    private String dataPath;
+
+    private static final String SDNC_CONFIG_DIR = "SDNC_CONFIG_DIR";
+    private static final Logger LOG = LoggerFactory
+            .getLogger(MigratorConfiguration.class);
+
+    public MigratorConfiguration (){
+        String propDir = System.getenv(SDNC_CONFIG_DIR);
+        if (propDir == null) {
+            propDir = "/opt/sdnc/data/properties";
+        }
+        try {
+            init(propDir);
+        } catch (Exception e) {
+            LOG.error("Cannot initialize MigratorConfiguration", e);
+        }
+    }
+
+    public MigratorConfiguration (String propDir){
+        try {
+            init(propDir);
+        } catch (Exception e) {
+            LOG.error("Cannot initialize MigratorConfiguration", e);
+        }
+    }
+
+    public void init(String propDir) throws IOException {
+        String propPath = propDir + "/data-migrator.properties";
+        URL propPathUrl= getClass().getClassLoader().getResource(propPath);
+        File propFile = (propPathUrl != null) ? new File(propPathUrl.getFile()) : new File(propPath); 
+        if (!propFile.exists()) {
+            throw new FileNotFoundException(
+                    "Missing configuration properties file : "
+                            + propFile);
+        }
+
+        Properties props = new Properties();
+        props.load(new FileInputStream(propFile));
+        this.sourceHost = props.getProperty("org.onap.sdnc.datamigrator.source.host");
+        this.sourceUser = props.getProperty("org.onap.sdnc.datamigrator.source.user");
+        this.sourcePassword = props.getProperty("org.onap.sdnc.datamigrator.source.password");
+        this.targetHost = props.getProperty("org.onap.sdnc.datamigrator.target.host");
+        this.targetUser = props.getProperty("org.onap.sdnc.datamigrator.target.user");
+        this.targetPassword = props.getProperty("org.onap.sdnc.datamigrator.target.password");
+        this.dataPath = props.getProperty("org.onap.sdnc.datamigrator.data.path");
+    }
+
+    public String getSourceHost() {
+        return sourceHost;
+    }
+
+    public String getSourceUser() {
+        return sourceUser;
+    }
+
+    public String getSourcePassword() {
+        return sourcePassword;
+    }
+
+    public String getTargetHost() {
+        return targetHost;
+    }
+
+    public String getTargetUser() {
+        return targetUser;
+    }
+
+    public String getTargetPassword() {
+        return targetPassword;
+    }
+
+    public String getDataPath() {
+        return dataPath;
+    }
+
+    public void setDataPath(String dataPath) {
+        this.dataPath = dataPath;
+    }
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/Operation.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/Operation.java
new file mode 100644
index 00000000..df6cd00a
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/Operation.java
@@ -0,0 +1,24 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.common;
+
+public enum Operation {
+    RESTORE,MIGRATE,BACKUP
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/RestconfClient.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/RestconfClient.java
new file mode 100644
index 00000000..b7722b6d
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/common/RestconfClient.java
@@ -0,0 +1,144 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.common;
+
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import org.onap.sdnc.oam.datamigrator.exceptions.RestconfException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.HttpsURLConnection;
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.Authenticator;
+import java.net.HttpURLConnection;
+import java.net.PasswordAuthentication;
+import java.net.URL;
+import java.util.Base64;
+
+public class RestconfClient {
+
+    private HttpURLConnection httpConn = null;
+    private final String host ;
+    private final String user ;
+    private final String password ;
+    private static final String CONFIG_PATH = "/restconf/config/";
+    private static final String CONTENT_TYPE_JSON = "application/json";
+    private final Logger log = LoggerFactory.getLogger(RestconfClient.class);
+
+    public RestconfClient (String host , String user , String password){
+        this.host = host;
+        this.user = user;
+        this.password = password;
+    }
+
+    private class SdncAuthenticator extends Authenticator {
+
+        private final String user;
+        private final String passwd;
+
+        SdncAuthenticator(String user, String passwd) {
+            this.user = user;
+            this.passwd = passwd;
+        }
+        @Override
+        protected PasswordAuthentication getPasswordAuthentication() {
+            return new PasswordAuthentication(user, passwd.toCharArray());
+        }
+    }
+
+    public JsonObject get(String path) throws RestconfException {
+            String getResponse = send(path,"GET",CONTENT_TYPE_JSON,"");
+            JsonParser parser = new JsonParser();
+            return parser.parse(getResponse).getAsJsonObject();
+    }
+
+    public void put(String path, String data) throws RestconfException {
+            send(path,"PUT",CONTENT_TYPE_JSON, data );
+    }
+
+    private String send(String path,String method, String contentType, String msg) throws RestconfException {
+        Authenticator.setDefault(new SdncAuthenticator(user, password));
+        String url = host + CONFIG_PATH + path;
+        try {
+            URL sdncUrl = new URL(url);
+            log.info("SDNC url: " + url);
+            log.info("Method: " + method);
+            this.httpConn = (HttpURLConnection) sdncUrl.openConnection();
+            String authStr = user + ":" + password;
+            String encodedAuthStr = new String(Base64.getEncoder().encode(authStr.getBytes()));
+            httpConn.addRequestProperty("Authentication", "Basic " + encodedAuthStr);
+
+            httpConn.setRequestMethod(method);
+            httpConn.setRequestProperty("Content-Type", contentType);
+            httpConn.setRequestProperty("Accept", contentType);
+
+            httpConn.setDoInput(true);
+            httpConn.setDoOutput(true);
+            httpConn.setUseCaches(false);
+
+            if (httpConn instanceof HttpsURLConnection) {
+                HostnameVerifier hostnameVerifier = (hostname, session) -> true;
+                ((HttpsURLConnection) httpConn).setHostnameVerifier(hostnameVerifier);
+            }
+            if (!method.equals("GET")) {
+                log.info("Request payload: " + msg);
+                httpConn.setRequestProperty("Content-Length", "" + msg.length());
+                DataOutputStream outStr = new DataOutputStream(httpConn.getOutputStream());
+                outStr.write(msg.getBytes());
+                outStr.close();
+            }
+
+            BufferedReader respRdr;
+            log.info("Response: " + httpConn.getResponseCode() + " " + httpConn.getResponseMessage());
+
+            if (httpConn.getResponseCode() < 300) {
+                respRdr = new BufferedReader(new InputStreamReader(httpConn.getInputStream()));
+            } else {
+                respRdr = new BufferedReader(new InputStreamReader(httpConn.getErrorStream()));
+                log.error("Error during restconf operation: "+ method + ". URL:" + sdncUrl.toString()+". Response:"+respRdr);
+                throw new RestconfException(httpConn.getResponseCode(),"Error during restconf operation: "+ method +". Response:"+respRdr);
+            }
+
+            StringBuilder respBuff = new StringBuilder();
+            String respLn;
+            while ((respLn = respRdr.readLine()) != null) {
+                respBuff.append(respLn).append("\n");
+            }
+            respRdr.close();
+            String respString = respBuff.toString();
+
+            log.info("Response body :\n" + respString);
+            return respString;
+        }catch (IOException e){
+            throw new RestconfException(500,e.getMessage(),e);
+        }finally {
+            if (httpConn != null) {
+                httpConn.disconnect();
+            }
+        }
+    }
+
+
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/exceptions/RestconfException.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/exceptions/RestconfException.java
new file mode 100644
index 00000000..6b714c29
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/exceptions/RestconfException.java
@@ -0,0 +1,46 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.exceptions;
+
+public class RestconfException extends Exception{
+
+    private final int errorCode;
+    private final String errorMessage;
+
+    public RestconfException(int errorCode, String errorMessage) {
+        super(errorMessage);
+        this.errorCode = errorCode;
+        this.errorMessage = errorMessage;
+    }
+
+    public RestconfException(int errorCode, String errorMessage, Throwable e) {
+        super(errorMessage,e);
+        this.errorCode = errorCode;
+        this.errorMessage = errorMessage;
+    }
+
+    public int getErrorCode() {
+        return errorCode;
+    }
+
+    public String getErrorMessage() {
+        return errorMessage;
+    }
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/Migrator.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/Migrator.java
new file mode 100644
index 00000000..e44a2c73
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/Migrator.java
@@ -0,0 +1,136 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.migrators;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import org.onap.sdnc.oam.datamigrator.common.MigratorConfiguration;
+import org.onap.sdnc.oam.datamigrator.common.Operation;
+import org.onap.sdnc.oam.datamigrator.common.RestconfClient;
+import org.onap.sdnc.oam.datamigrator.exceptions.RestconfException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+
+public abstract class Migrator {
+
+    protected RestconfClient sourceClient;
+    protected RestconfClient targetClient;
+    protected boolean success = true;
+    private MigratorConfiguration config;
+    private final Logger log = LoggerFactory.getLogger(PreloadInformationMigrator.class);
+
+
+    public void run(Operation operation){
+        {
+            JsonObject sourceData;
+            if(operation != Operation.RESTORE) {
+
+                try {
+                    sourceData = sourceClient.get(getYangModuleName()+":"+ getSourcePath());
+                    if(operation == Operation.BACKUP){
+                        String fileName = getFileName();
+                        try {
+                            BufferedWriter writer = new BufferedWriter(new FileWriter(fileName));
+                            writer.write(sourceData.toString());
+                            writer.close();
+                        } catch (IOException e) {
+                            log.error("Error writing data to file : " + fileName, e);
+                            success = false;
+                            return;
+                        }
+                        return;
+                    }
+                } catch (RestconfException e) {
+                    if(e.getErrorCode() == 404){
+                        log.error("No data available for migration. Returning silent success.", e);
+                        success = true;
+                    }else {
+                        log.error("Error retrieving data from MD-SAL store. Error code: " + e.getErrorCode() + ". Error message:" + e.getErrorMessage(), e);
+                        success = false;
+                    }
+                    return;
+                }
+            }else {
+                String fileName = getFileName();
+                try {
+                    Gson gson = new Gson();
+                    sourceData = gson.fromJson(new BufferedReader(new FileReader(fileName)),JsonObject.class);
+                } catch (IOException e) {
+                    log.error("Error Reading data from file : " + fileName, e);
+                    success = false;
+                    return;
+                }
+            }
+            try {
+                String targetData = convertData(sourceData);
+                targetClient.put(getYangModuleName()+":"+ getTargetPath(),targetData);
+            } catch (RestconfException e) {
+                log.error("Error loading data to MD-SAL store. Error code: "+e.getErrorCode()+". Error message:"+e.getErrorMessage(),e);
+                success=false;
+            }
+        }
+    }
+
+    private String getFileName() {
+        return config.getDataPath()+ "/" + getYangModuleName()+ "_"+ getSourcePath()+"_"+ getTargetPath() + ".json";
+    }
+
+    protected abstract String convertData(JsonObject sourceData);
+
+    public abstract String getYangModuleName();
+    public abstract String getSourcePath();
+    public abstract String getTargetPath();
+
+    public void init(MigratorConfiguration config){
+        this.config = config;
+        sourceClient = new RestconfClient(config.getSourceHost(),config.getSourceUser(),config.getSourcePassword());
+        targetClient = new RestconfClient(config.getTargetHost(),config.getTargetUser(),config.getTargetPassword());
+    }
+
+    public RestconfClient getSourceClient() {
+        return sourceClient;
+    }
+
+    public void setSourceClient(RestconfClient sourceClient) {
+        this.sourceClient = sourceClient;
+    }
+
+    public RestconfClient getTargetClient() {
+        return targetClient;
+    }
+
+    public void setTargetClient(RestconfClient targetClient) {
+        this.targetClient = targetClient;
+    }
+
+    public boolean isSuccess() {
+        return success;
+    }
+
+    public void setSuccess(boolean success) {
+        this.success = success;
+    }
+}
+
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/PreloadInformationMigrator.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/PreloadInformationMigrator.java
new file mode 100644
index 00000000..d259c216
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/PreloadInformationMigrator.java
@@ -0,0 +1,61 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.migrators;
+
+import org.onap.sdnc.oam.datamigrator.common.Description;
+
+import java.util.HashMap;
+import java.util.HashSet;
+
+@Description("Migrator for container 'preload-vnf' in GENERIC-RESOURCE-API.yang")
+public class PreloadInformationMigrator extends RenameDeleteLeafMigrator {
+
+    private static final String YANG_MODULE = "GENERIC-RESOURCE-API";
+
+    static{
+        deletedFields = new HashSet<>();
+        deletedFields.add("preload-vnfs.vnf-preload-list.preload-data.vnf-topology-information");
+        deletedFields.add("preload-vnfs.vnf-preload-list.preload-data.network-topology-information.network-topology-identifier.service-type");
+        deletedFields.add("preload-vnfs.vnf-preload-list.preload-data.oper-status.last-action");
+        renamedFields = new HashMap<>();
+        renamedFields.put("preload-vnfs","preload-information");
+        renamedFields.put("preload-vnfs.vnf-preload-list","preload-list");
+        renamedFields.put("preload-vnfs.vnf-preload-list.vnf-type","preload-type");
+        renamedFields.put("preload-vnfs.vnf-preload-list.vnf-name","preload-id");
+        renamedFields.put("preload-vnfs.vnf-preload-list.preload-data.oper-status","preload-oper-status");
+        renamedFields.put("preload-vnfs.vnf-preload-list.preload-data.network-topology-information","preload-network-topology-information");
+        renamedFields.put("preload-vnfs.vnf-preload-list.preload-data.network-topology-information.network-topology-identifier","network-topology-identifier-structure");
+    }
+
+    @Override
+    public String getYangModuleName() {
+        return YANG_MODULE;
+    }
+
+    @Override
+    public String getSourcePath() {
+        return "preload-vnfs";
+    }
+
+    @Override
+    public String getTargetPath() {
+        return "preload-information";
+    }
+}
diff --git a/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/RenameDeleteLeafMigrator.java b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/RenameDeleteLeafMigrator.java
new file mode 100644
index 00000000..8c0adc0c
--- /dev/null
+++ b/data-migrator/src/main/java/org/onap/sdnc/oam/datamigrator/migrators/RenameDeleteLeafMigrator.java
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.migrators;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import org.apache.commons.lang3.StringUtils;
+import java.util.Map;
+import java.util.Set;
+
+public abstract class RenameDeleteLeafMigrator extends Migrator {
+
+    protected static Map<String,String> renamedFields ;
+    protected static Set<String> deletedFields ;
+
+    @Override
+    protected String convertData(JsonObject sourceData) {
+        JsonObject target =  convert(sourceData,"");
+        return  target.toString();
+    }
+
+    protected JsonObject convert(JsonObject source,String parent) {
+        JsonObject target = new JsonObject();
+        for (String key : source.keySet()){
+            String prefixKey = StringUtils.isNotEmpty(parent) ? parent + "."+key : key;
+            if(!deletedFields.contains(prefixKey)) {
+                JsonElement value = source.get(key);
+                if (value.isJsonPrimitive()) {
+                    target.add(renamedFields.getOrDefault(prefixKey,key), value);
+                } else if(value.isJsonArray()){
+                    JsonArray targetList = new JsonArray();
+                    JsonArray sourceArray = value.getAsJsonArray();
+                    for(JsonElement  e : sourceArray){
+                         targetList.add(convert(e.getAsJsonObject(),prefixKey));
+                    }
+                    target.add(renamedFields.getOrDefault(prefixKey,key), targetList);
+                } else{
+                    target.add(renamedFields.getOrDefault(prefixKey,key), convert(value.getAsJsonObject(),prefixKey));
+                }
+            }
+        }
+        return target;
+    }
+}
diff --git a/data-migrator/src/main/resources/data-migrator.properties b/data-migrator/src/main/resources/data-migrator.properties
new file mode 100644
index 00000000..f5f55a5e
--- /dev/null
+++ b/data-migrator/src/main/resources/data-migrator.properties
@@ -0,0 +1,27 @@
+###
+# ============LICENSE_START=======================================================
+# openECOMP : SDN-C
+# ================================================================================
+# Copyright (C) 2019 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=========================================================
+###
+
+org.onap.sdnc.datamigrator.source.host=http://localhost:8081
+org.onap.sdnc.datamigrator.source.user=admin
+org.onap.sdnc.datamigrator.source.password=Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U
+org.onap.sdnc.datamigrator.target.host=http://localhost:8082
+org.onap.sdnc.datamigrator.target.user=admin
+org.onap.sdnc.datamigrator.target.password=Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U
+org.onap.sdnc.datamigrator.data.path=C:/DATA
\ No newline at end of file
diff --git a/data-migrator/src/main/resources/log4j.properties b/data-migrator/src/main/resources/log4j.properties
new file mode 100644
index 00000000..d53dc5a8
--- /dev/null
+++ b/data-migrator/src/main/resources/log4j.properties
@@ -0,0 +1,37 @@
+###
+# ============LICENSE_START=======================================================
+# openECOMP : SDN-C
+# ================================================================================
+# Copyright (C) 2019 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=========================================================
+###
+
+log4j.rootLogger=DEBUG,CONSOLE,LOGFILE
+
+# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
+log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
+log4j.appender.CONSOLE.Threshold=DEBUG
+log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
+log4j.appender.CONSOLE.layout.ConversionPattern=%p %d{yyyy-MM-dd HH:mm:ss.SSS Z} %c{1} - %m%n
+
+
+# LOGFILE is set to be a File appender using a PatternLayout.
+log4j.appender.LOGFILE=org.apache.log4j.RollingFileAppender
+log4j.appender.LOGFILE.File=/opt/app/data-migrator/data-migrator.log
+log4j.appender.LOGFILE.Append=true
+log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
+log4j.appender.LOGFILE.layout.ConversionPattern=%p %d{yyyy-MM-dd HH:mm:ss.SSS Z} %c{1} - %m%n
+log4j.appender.LOGFILE.MaxFileSize=10MB
+log4j.appender.LOGFILE.MaxBackupIndex=10
diff --git a/data-migrator/src/main/scripts/runMigration.sh b/data-migrator/src/main/scripts/runMigration.sh
new file mode 100644
index 00000000..e763acbe
--- /dev/null
+++ b/data-migrator/src/main/scripts/runMigration.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+###
+# ============LICENSE_START=======================================================
+# openECOMP : SDN-C
+# ================================================================================
+# Copyright (C) 2019 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=========================================================
+###
+
+PROPERTY_DIR=${PROPERTY_DIR:-/opt/onap/sdnc/data/properties}
+MIGRATION=data-migrator
+MIGRATION_ROOT=${MIGRATION_ROOT:-/opt/onap/sdnc/data-migrator}
+JAVA_HOME=${JAVA_HOME:-/usr/lib/jvm/java-8-oracle}
+JAVA_OPTS=${JAVA_OPTS:--Dhttps.protocols=TLSv1.1,TLSv1.2}
+JAVA=${JAVA:-${JAVA_HOME}/bin/java}
+
+# Redirect output from script to MIGRATION.out
+exec >> ${MIGRATION_ROOT}/logs/$MIGRATION.out
+exec 2>&1
+
+if [ ! -d ${MIGRATION_ROOT}/logs ]
+then
+  mkdir ${MIGRATION_ROOT}/logs
+fi
+
+for file in ${MIGRATION_ROOT}/lib/*.jar
+do
+  CLASSPATH=$CLASSPATH:$file
+done
+
+${JAVA} ${JAVA_OPTS} -Dlog4j.configuration=file:${MIGRATION_ROOT}/properties/log4j.properties -cp ${CLASSPATH} org.onap.sdnc.oam.datamigrator.DataMigration $@
+
+echo $! 
+
+exit 0
diff --git a/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/DataMigrationInternalTest.java b/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/DataMigrationInternalTest.java
new file mode 100644
index 00000000..18cd662f
--- /dev/null
+++ b/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/DataMigrationInternalTest.java
@@ -0,0 +1,92 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator;
+
+import com.github.tomakehurst.wiremock.client.WireMock;
+import com.github.tomakehurst.wiremock.junit.WireMockRule;
+import org.junit.Rule;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
+import static com.github.tomakehurst.wiremock.client.WireMock.get;
+import static com.github.tomakehurst.wiremock.client.WireMock.put;
+import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+public class DataMigrationInternalTest {
+
+    @Rule
+    public WireMockRule source = new WireMockRule(8081);
+    @Rule
+    public WireMockRule target = new WireMockRule(8082);
+    
+    private static final Logger LOG = LoggerFactory.getLogger(DataMigrationInternal.class);
+    DataMigrationInternal dataMigrationInternal = new DataMigrationInternal(LOG);
+    private ClassLoader classLoader = getClass().getClassLoader();
+    private  String preloadVnfResponseJson = new String(Files.readAllBytes(Paths.get(classLoader.getResource("wiremock/preloadVnfResponse.json").toURI())));
+    private String preloadInformationRequestJson = new String(Files.readAllBytes(Paths.get(classLoader.getResource("wiremock/preloadInformationRequest.json").toURI())));
+
+    public DataMigrationInternalTest() throws IOException, URISyntaxException {
+    }
+
+    @Test
+    public void runPositiveTest() {
+        String [] args = {"-c","migration/props"};
+        PrintStream oldOutputStream = System.out;
+        final ByteArrayOutputStream myOut = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(myOut));
+        source.stubFor(get(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-vnfs")).willReturn(
+                aResponse()
+                        .withStatus(200)
+                        .withBody(preloadVnfResponseJson)));
+        target.stubFor(put(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-information")).withRequestBody(WireMock.equalTo(preloadInformationRequestJson)).willReturn(
+                aResponse()
+                        .withStatus(200)));
+        dataMigrationInternal.run(args);
+        String content = myOut.toString();
+        assertThat("Migration failed", content.contains("MIGRATE operation completed Successfully."));
+        System.setOut(oldOutputStream);
+    }
+
+  @Test
+    public void runTestWithNoData() {
+        String [] args = {"-c","migration/props"};
+      PrintStream oldOutputStream = System.out;
+      final ByteArrayOutputStream myOut = new ByteArrayOutputStream();
+      System.setOut(new PrintStream(myOut));
+      source.stubFor(get(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-vnfs"))
+              .willReturn(aResponse().withStatus(404)));
+      target.stubFor(put(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-information"))
+              .withRequestBody(WireMock.equalTo(preloadInformationRequestJson)).willReturn(aResponse().withStatus(200)));
+      dataMigrationInternal.run(args);
+      String content = myOut.toString();
+      assertThat("Migration failed", content.contains("MIGRATE operation completed Successfully."));
+      System.setOut(oldOutputStream);
+    }
+}
\ No newline at end of file
diff --git a/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/common/RestconfClientTest.java b/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/common/RestconfClientTest.java
new file mode 100644
index 00000000..bbffd608
--- /dev/null
+++ b/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/common/RestconfClientTest.java
@@ -0,0 +1,107 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.common;
+
+import com.github.tomakehurst.wiremock.client.WireMock;
+import com.github.tomakehurst.wiremock.junit.WireMockRule;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParser;
+import org.junit.Rule;
+import org.junit.Test;
+import org.onap.sdnc.oam.datamigrator.exceptions.RestconfException;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
+import static com.github.tomakehurst.wiremock.client.WireMock.get;
+import static com.github.tomakehurst.wiremock.client.WireMock.put;
+import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+public class RestconfClientTest {
+
+    @Rule
+    public WireMockRule service = new WireMockRule(8081);
+    private RestconfClient restconfClient = new RestconfClient("http://localhost:8081","admin","Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U");
+    private ClassLoader classLoader = getClass().getClassLoader();
+    private  String preloadVnfResponseJson = new String(Files.readAllBytes(Paths.get(classLoader.getResource("wiremock/preloadVnfResponse.json").toURI())));
+    private String preloadInformationRequestJson = new String(Files.readAllBytes(Paths.get(classLoader.getResource("wiremock/preloadInformationRequest.json").toURI())));
+    
+    
+    JsonObject expectedJsonObject = new JsonParser().parse(preloadVnfResponseJson).getAsJsonObject();
+
+    public RestconfClientTest() throws IOException, URISyntaxException {
+    }
+
+    @Test
+    public void getPositiveTest() {
+        service.stubFor(get(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-vnfs"))
+                .willReturn(aResponse().withStatus(200).withBody(preloadVnfResponseJson)));
+        JsonObject actualResponse=null;
+        try {
+            actualResponse =  restconfClient.get("GENERIC-RESOURCE-API:preload-vnfs");
+        } catch (RestconfException e) {
+            e.printStackTrace();
+        }
+        assertEquals(expectedJsonObject,actualResponse);
+    }
+
+    @Test
+    public void getNegativeTest() {
+        service.stubFor(get(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-vnfs"))
+                .willReturn(aResponse().withStatus(404)));
+        JsonObject actualResponse=null;
+        try {
+            actualResponse = restconfClient.get("GENERIC-RESOURCE-API:preload-vnfs");
+        } catch (RestconfException e) {
+            e.printStackTrace();
+        }
+        assertNull(actualResponse);
+    }
+
+    @Test
+    public void putPositiveTest() {
+        service.stubFor(put(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-information"))
+                .withRequestBody(WireMock.equalTo(preloadInformationRequestJson)).willReturn(aResponse().withStatus(200)));
+        Exception ex = null;
+        try {
+            restconfClient.put("GENERIC-RESOURCE-API:preload-information", preloadInformationRequestJson);
+        } catch (RestconfException e) {
+            ex =e;
+        }
+        assertNull(ex);
+    }
+
+    @Test
+    public void putNegativeTest() {
+        service.stubFor(put(urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-information"))
+                .withRequestBody(WireMock.equalTo(preloadInformationRequestJson)).willReturn(aResponse().withStatus(500)));
+        try {
+            restconfClient.put("GENERIC-RESOURCE-API:preload-information", preloadInformationRequestJson);
+        } catch (RestconfException e) {
+           assertTrue(e.getErrorMessage().contains("Error during restconf operation: PUT."));
+        }
+    }
+}
\ No newline at end of file
diff --git a/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/datamigrator/PreloadInformationMigratorTest.java b/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/datamigrator/PreloadInformationMigratorTest.java
new file mode 100644
index 00000000..7972b7ab
--- /dev/null
+++ b/data-migrator/src/test/java/org/onap/sdnc/oam/datamigrator/datamigrator/PreloadInformationMigratorTest.java
@@ -0,0 +1,80 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : SDNC
+ * ================================================================================
+ * Copyright 2019 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.sdnc.oam.datamigrator.datamigrator;
+
+import com.github.tomakehurst.wiremock.client.WireMock;
+import com.github.tomakehurst.wiremock.junit.WireMockRule;
+import org.junit.Rule;
+import org.junit.Test;
+import org.onap.sdnc.oam.datamigrator.common.Operation;
+import org.onap.sdnc.oam.datamigrator.common.RestconfClient;
+import org.onap.sdnc.oam.datamigrator.migrators.PreloadInformationMigrator;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+
+public class PreloadInformationMigratorTest {
+
+    @Rule
+    public WireMockRule service1 = new WireMockRule(8081);
+
+    @Rule
+    public WireMockRule service2 = new WireMockRule(8082);
+    PreloadInformationMigrator migrator = new PreloadInformationMigrator();
+    private ClassLoader classLoader = getClass().getClassLoader();
+    private  String preloadVnfResponseJson = new String(Files.readAllBytes(Paths.get(classLoader.getResource("wiremock/preloadVnfResponse.json").toURI())));
+    private String preloadInformationRequestJson = new String(Files.readAllBytes(Paths.get(classLoader.getResource("wiremock/preloadInformationRequest.json").toURI())));
+
+    public PreloadInformationMigratorTest() throws IOException, URISyntaxException {
+    }
+
+    @Test
+    public void testRun (){
+        service1.stubFor(WireMock.get(WireMock.urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-vnfs")).willReturn(
+                WireMock.aResponse()
+                        .withStatus(200)
+                        .withBody(preloadVnfResponseJson)));
+        service2.stubFor(WireMock.put(WireMock.urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-information")).withRequestBody(WireMock.equalTo(preloadInformationRequestJson)).willReturn(
+                WireMock.aResponse()
+                        .withStatus(200)));
+        RestconfClient sourceClient = new RestconfClient("http://localhost:8081","admin","Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U");
+        migrator.setSourceClient(sourceClient);
+        RestconfClient targetClient = new RestconfClient("http://localhost:8082","admin","Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U");
+        migrator.setTargetClient(targetClient);
+        migrator.run(Operation.MIGRATE);
+    }
+
+    @Test
+    public void testRunNoData (){
+        service1.stubFor(WireMock.get(WireMock.urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-vnfs")).willReturn(
+                WireMock.aResponse()
+                        .withStatus(404)));
+        service2.stubFor(WireMock.put(WireMock.urlEqualTo("/restconf/config/GENERIC-RESOURCE-API:preload-information")).withRequestBody(WireMock.equalTo(preloadInformationRequestJson)).willReturn(
+                WireMock.aResponse()
+                        .withStatus(200)));
+        RestconfClient sourceClient = new RestconfClient("http://localhost:8081","admin","Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U");
+        migrator.setSourceClient(sourceClient);
+        RestconfClient targetClient = new RestconfClient("http://localhost:8082","admin","Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U");
+        migrator.setTargetClient(targetClient);
+        migrator.run(Operation.MIGRATE);
+    }
+}
diff --git a/data-migrator/src/test/resources/log4j.properties b/data-migrator/src/test/resources/log4j.properties
new file mode 100644
index 00000000..82f1f470
--- /dev/null
+++ b/data-migrator/src/test/resources/log4j.properties
@@ -0,0 +1,29 @@
+###
+# ============LICENSE_START=======================================================
+# ONAP : SDN-C
+# ================================================================================
+# Copyright (C) 2019 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=========================================================
+###
+
+log4j.rootLogger=DEBUG,CONSOLE
+
+# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
+log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
+log4j.appender.CONSOLE.Threshold=DEBUG
+log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
+log4j.appender.CONSOLE.layout.ConversionPattern=%p %d{yyyy-MM-dd HH:mm:ss.SSS Z} %c{1} - %m%n
+
+
diff --git a/data-migrator/src/test/resources/migration/props/data-migrator.properties b/data-migrator/src/test/resources/migration/props/data-migrator.properties
new file mode 100644
index 00000000..d9ddadbb
--- /dev/null
+++ b/data-migrator/src/test/resources/migration/props/data-migrator.properties
@@ -0,0 +1,27 @@
+###
+# ============LICENSE_START=======================================================
+# ONAP : SDN-C
+# ================================================================================
+# Copyright (C) 2019 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=========================================================
+###
+
+org.onap.sdnc.datamigrator.source.host=http://localhost:8081
+org.onap.sdnc.datamigrator.source.user=admin
+org.onap.sdnc.datamigrator.source.password=Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U
+org.onap.sdnc.datamigrator.target.host=http://localhost:8082
+org.onap.sdnc.datamigrator.target.user=admin
+org.onap.sdnc.datamigrator.target.password=Kp8bJ4SXszM0WXlhak3eHlcse2gAw84vaoGGmJvUy2U
+org.onap.sdnc.datamigrator.data.path=C:/DATA
\ No newline at end of file
diff --git a/data-migrator/src/test/resources/wiremock/preloadInformationRequest.json b/data-migrator/src/test/resources/wiremock/preloadInformationRequest.json
new file mode 100644
index 00000000..82df627b
--- /dev/null
+++ b/data-migrator/src/test/resources/wiremock/preloadInformationRequest.json
@@ -0,0 +1 @@
+{"preload-information":{"preload-list":[{"preload-type":"vnf-type","preload-id":"vnf-name","preload-data":{"preload-oper-status":{"modify-timestamp":"Some modify-timestamp","create-timestamp":"Some create-timestamp","last-order-status":"Active","order-status":"Active","maintenance-indicator":"Y","last-svc-request-id":"Some last-svc-request-id"},"preload-network-topology-information":{"is-provider-network":true,"network-topology-identifier-structure":{"network-role":"Some network-role","network-technology":"Some network-technology","network-type":"Some network-type","network-name":"Some network-name"},"route-table-reference":[{"route-table-reference-fqdn":"Some route-table-reference-fqdn","route-table-reference-id":"Some route-table-reference-id"}],"network-policy":[{"network-policy-fqdn":"Some network-policy-fqdn","network-policy-id":"Some network-policy-id"}],"subnets":[{"start-address":"1.1.11.2","gateway-address":"8.0.25.2","cidr-mask":"Some cidr-mask","dhcp-end-address":"Some dhcp-end-address","subnet-name":"Some subnet-name","dhcp-start-address":"Some dhcp-start-address","ip-version":"Some ip-version","dhcp-enabled":"Y"}],"vpn-bindings":[{"vpn-binding-id":"Some vpn-binding-id","global-route-target":"Some global-route-target"}],"is-external-network":true,"is-shared-network":true,"physical-network-name":"Some physical-network-name"}}}]}}
\ No newline at end of file
diff --git a/data-migrator/src/test/resources/wiremock/preloadVnfResponse.json b/data-migrator/src/test/resources/wiremock/preloadVnfResponse.json
new file mode 100644
index 00000000..006d62f7
--- /dev/null
+++ b/data-migrator/src/test/resources/wiremock/preloadVnfResponse.json
@@ -0,0 +1,132 @@
+{
+  "preload-vnfs": {
+    "vnf-preload-list": [
+      {
+        "vnf-type": "vnf-type",
+        "vnf-name": "vnf-name",
+        "preload-data": {
+          "oper-status": {
+            "last-action": "VNFActivateRequest",
+            "modify-timestamp": "Some modify-timestamp",
+            "create-timestamp": "Some create-timestamp",
+            "last-order-status": "Active",
+            "order-status": "Active",
+            "maintenance-indicator": "Y",
+            "last-svc-request-id": "Some last-svc-request-id"
+          },
+          "vnf-topology-information": {
+            "vnf-topology-identifier": {
+              "service-type": "Some service-type",
+              "service-id": "Some service-id",
+              "generic-vnf-name": "Some generic-vnf-name",
+              "generic-vnf-id": "Some generic-vnf-id",
+              "generic-vnf-type": "Some generic-vnf-type",
+              "vnf-type": "vnf-type",
+              "vnf-name": "vnf-name"
+            },
+            "vnf-parameters": [
+              {
+                "vnf-parameter-name": "Some vnf-parameter-name",
+                "vnf-parameter-value": "Some vnf-parameter-value"
+              }
+            ],
+            "vnf-assignments": {
+              "vnf-vms": [
+                {
+                  "vm-type": "Some vm-type",
+                  "vm-count": 0,
+                  "vm-names": [
+                    {"vm-name": "Some vm-name"}
+                  ],
+                  "vm-networks": [
+                    {
+                      "network-role": "Some network-role",
+                      "use-dhcp": "Y",
+                      "floating-ip": "2.12.250.0",
+                      "network-macs": [
+                        {"mac-address": "Some mac-address"}
+                      ],
+                      "network-ips": [
+                        {"ip-address": "13.2.219.8"}
+                      ],
+                      "interface-route-prefixes": [
+                        {
+                          "interface-route-prefix-cidr": "Some interface-route-prefix-cidr",
+                          "interface-route-prefix": "24.0.45.1"
+                        }
+                      ],
+                      "ip-count": 0
+                    }
+                  ]
+                }
+              ],
+              "vnf-status": "Some vnf-status",
+              "vnf-networks": [
+                {
+                  "network-role": "Some network-role",
+                  "network-id": "Some network-id",
+                  "ipv6-subnet-id": "Some ipv6-subnet-id",
+                  "ipv6-subnet-name": "Some ipv6-subnet-name",
+                  "subnet-name": "Some subnet-name",
+                  "contrail-network-fqdn": "Some contrail-network-fqdn",
+                  "subnet-id": "Some subnet-id",
+                  "sriov-vlan-filter-list": [
+                    {"sriov-vlan-filter": "Some sriov-vlan-filter"}
+                  ],
+                  "network-name": "Some network-name",
+                  "neutron-id": "Some neutron-id"
+                }
+              ],
+              "availability-zones": [
+                {"availability-zone": "Some availability-zone"}
+              ]
+            }
+          },
+          "network-topology-information": {
+            "is-provider-network": true,
+            "network-topology-identifier": {
+              "service-type": "Some service-type",
+              "network-role": "Some network-role",
+              "network-technology": "Some network-technology",
+              "network-type": "Some network-type",
+              "network-name": "Some network-name"
+            },
+            "route-table-reference": [
+              {
+                "route-table-reference-fqdn": "Some route-table-reference-fqdn",
+                "route-table-reference-id": "Some route-table-reference-id"
+              }
+            ],
+            "network-policy": [
+              {
+                "network-policy-fqdn": "Some network-policy-fqdn",
+                "network-policy-id": "Some network-policy-id"
+              }
+            ],
+            "subnets": [
+              {
+                "start-address": "1.1.11.2",
+                "gateway-address": "8.0.25.2",
+                "cidr-mask": "Some cidr-mask",
+                "dhcp-end-address": "Some dhcp-end-address",
+                "subnet-name": "Some subnet-name",
+                "dhcp-start-address": "Some dhcp-start-address",
+                "ip-version": "Some ip-version",
+                "dhcp-enabled": "Y"
+              }
+            ],
+            "vpn-bindings": [
+              {
+                "vpn-binding-id": "Some vpn-binding-id",
+                "global-route-target": "Some global-route-target"
+              }
+            ],
+            "is-external-network": true,
+            "is-shared-network": true,
+            "physical-network-name": "Some physical-network-name"
+          }
+        }
+      }
+    ]
+  }
+}
\ No newline at end of file