Move Masspnf simulator code from Integration repository to it's own

Change-Id: Id48ca08ec0d042d93e204b49ae9fe1bc86efd67b
Issue-ID: INT-1810
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>

26 files changed, 1911 insertions, 0 deletions

diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/ConfigurationProvider.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/ConfigurationProvider.java
new file mode 100644
index 0000000..15c687e
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/ConfigurationProvider.java
@@ -0,0 +1,28 @@
+package org.onap.pnfsimulator;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
+import java.io.File;
+
+public class ConfigurationProvider {
+    static PnfSimConfig conf = null;
+
+    public static PnfSimConfig getConfigInstance() {
+
+        ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
+        try {
+            File file = new File("./config/config.yml");
+
+            conf = mapper.readValue(file, PnfSimConfig.class);
+            System.out.println("Ves URL: " + conf.getUrlves());
+            System.out.println("SFTP URL: " + conf.getUrlsftp());
+            System.out.println("FTPS URL: " + conf.getUrlftps());
+            System.out.println("PNF sim IP: " + conf.getIppnfsim());
+
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return conf;
+    }
+
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/FileProvider.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/FileProvider.java
new file mode 100644
index 0000000..beb564d
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/FileProvider.java
@@ -0,0 +1,41 @@
+package org.onap.pnfsimulator;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import org.onap.pnfsimulator.simulator.validation.NoRopFilesException;
+
+public class FileProvider {
+
+    public List<String> getFiles() throws NoRopFilesException {
+
+        List<String> files = queryFiles();
+
+        files.sort(Collections.reverseOrder());
+
+        List<String> fileListSorted = new ArrayList<>();
+        for (String f : files) {
+            fileListSorted.add(f);
+        }
+        return fileListSorted;
+    }
+
+    private static List<String> queryFiles() throws NoRopFilesException {
+
+        File folder = new File("./files/onap/");
+        File[] listOfFiles = folder.listFiles();
+        if (listOfFiles == null || listOfFiles.length == 0) {
+            throw new NoRopFilesException("No ROP files found in specified directory");
+        }
+
+        List<String> results = new ArrayList<>();
+        for (int i = 0; i < listOfFiles.length; i++) {
+            if (listOfFiles[i].isFile()) {
+                results.add(listOfFiles[i].getName());
+            }
+        }
+
+        return results;
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/Main.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/Main.java
new file mode 100644
index 0000000..a66bedb
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/Main.java
@@ -0,0 +1,53 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================ Copyright (C)
+ * 2018 NOKIA 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.pnfsimulator;
+
+import java.util.concurrent.TimeUnit;
+import org.onap.pnfsimulator.message.MessageProvider;
+import org.onap.pnfsimulator.simulator.validation.JSONValidator;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+import org.springframework.scheduling.annotation.EnableAsync;
+
+@SpringBootApplication
+@EnableAsync
+public class Main {
+
+    public static void main(String[] args) throws InterruptedException {
+        SpringApplication.run(Main.class, args);
+
+        TimeUnit.SECONDS.sleep(5);
+        System.out.println("Start sending VES events");
+
+
+    }
+
+    @Bean
+    public MessageProvider messageProvider() {
+        return new MessageProvider();
+    }
+
+    @Bean
+    public JSONValidator jsonValidator() {
+        return new JSONValidator();
+    }
+
+}
+
+
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/PnfSimConfig.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/PnfSimConfig.java
new file mode 100644
index 0000000..3dd4aba
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/PnfSimConfig.java
@@ -0,0 +1,57 @@
+package org.onap.pnfsimulator;
+
+public class PnfSimConfig {
+    private String urlves;
+    private String urlftps;
+    private String urlsftp;
+    private String ippnfsim;
+    private String typefileserver;
+
+    public String getTypefileserver() {
+        return typefileserver;
+    }
+
+    public void setTypefileserver(String typefileserver) {
+        this.typefileserver = typefileserver;
+    }
+
+
+    public String getUrlves() {
+        return urlves;
+    }
+
+    public void setUrlves(String urlves) {
+        this.urlves = urlves;
+    }
+
+    public String getUrlftps() {
+        return urlftps;
+    }
+
+    public void setUrlftps(String urlftps) {
+        this.urlftps = urlftps;
+    }
+
+    public String getUrlsftp() {
+        return urlsftp;
+    }
+
+    public void setUrlsftp(String urlsftp) {
+        this.urlsftp = urlsftp;
+    }
+
+    public void setIppnfsim(String ippnfsim) {
+        this.ippnfsim = ippnfsim;
+    }
+
+    public String getIppnfsim() {
+        return ippnfsim;
+    }
+
+    @Override
+    public String toString() {
+        return "PnfSimConfig [vesip=" + urlves + ", urlftps=" + urlftps + ", urlsftp=" + urlsftp + ", ippnfsim="
+                + ippnfsim + ", typefileserver=" + typefileserver + "]";
+    }
+
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/logback.xml b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/logback.xml
new file mode 100644
index 0000000..0f6d9de
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/logback.xml
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration complete="true" compact="true">
+
+  <Property name="outputFilename" value="pnfsimulator_output"/>
+  <Property name="log-path" value="/var/log/ONAP/pnfsimulator"/>
+  <Property name="archive" value="/var/log/ONAP/pnfsimulator/archive"/>
+  <property name="maxFileSize" value="50MB"/>
+  <property name="maxHistory" value="30"/>
+  <property name="totalSizeCap" value="10GB"/>
+
+  <appender name="Console" target="SYSTEM_OUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder>
+      <Pattern>%nopexception%logger
+        |%date{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC}
+        |%level
+        |%replace(%replace(%message){'\t','\\\\t'}){'\n','\\\\n'}
+        |%replace(%replace(%mdc){'\t','\\\\t'}){'\n','\\\\n'}
+        |%replace(%replace(%rootException){'\t','\\\\t'}){'\n','\\\\n'}
+        |%replace(%replace(%marker){'\t','\\\\t'}){'\n','\\\\n'}
+        |%thread
+        |%n</Pattern>
+    </encoder>
+  </appender>
+
+  <appender name="ROLLING-FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+    <encoder>
+      <pattern>%nopexception%logger
+        |%date{yyyy-MM-dd'T'HH:mm:ss.SSSXXX,UTC}
+        |%level
+        |%replace(%replace(%message){'\t','\\\\t'}){'\n','\\\\n'}
+        |%replace(%replace(%mdc){'\t','\\\\t'}){'\n','\\\\n'}
+        |%replace(%replace(%rootException){'\t','\\\\t'}){'\n','\\\\n'}
+        |%replace(%replace(%marker){'\t','\\\\t'}){'\n','\\\\n'}
+        |%thread
+        |%n</pattern>
+    </encoder>
+    <File>${log-path}/${outputFilename}.log</File>
+    <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+      <FileNamePattern>${archive}/${outputFilename}.%d{yyyy-MM-dd}.%i.log.zip</FileNamePattern>
+      <MaxFileSize>${maxFileSize}</MaxFileSize>
+      <MaxHistory>${maxHistory}</MaxHistory>
+      <TotalSizeCap>${totalSizeCap}</TotalSizeCap>
+    </rollingPolicy>
+  </appender>
+
+  <root level="debug">
+    <appender-ref ref="Console" />
+    <appender-ref ref="ROLLING-FILE" />
+  </root>
+</Configuration>
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/logging/MDCVariables.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/logging/MDCVariables.java
new file mode 100644
index 0000000..e479b4a
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/logging/MDCVariables.java
@@ -0,0 +1,36 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.logging;
+
+public final class MDCVariables {
+
+    public static final String X_ONAP_REQUEST_ID = "X-ONAP-RequestID";
+    public static final String X_INVOCATION_ID = "X-InvocationID";
+    public static final String REQUEST_ID = "RequestID";
+    public static final String INVOCATION_ID = "InvocationID";
+    public static final String INSTANCE_UUID = "InstanceUUID";
+    public static final String RESPONSE_CODE = "ResponseCode";
+    public static final String SERVICE_NAME = "ServiceName";
+    public static final String AUTHORIZATION = "Authorization";
+
+    private MDCVariables() {
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/JSONObjectFactory.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/JSONObjectFactory.java
new file mode 100644
index 0000000..7c12983
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/JSONObjectFactory.java
@@ -0,0 +1,142 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.message;
+
+import static org.onap.pnfsimulator.message.MessageConstants.COMPRESSION;
+import static org.onap.pnfsimulator.message.MessageConstants.COMPRESSION_VALUE;
+import static org.onap.pnfsimulator.message.MessageConstants.EVENT_ID;
+import static org.onap.pnfsimulator.message.MessageConstants.FILE_FORMAT_TYPE;
+import static org.onap.pnfsimulator.message.MessageConstants.FILE_FORMAT_TYPE_VALUE;
+import static org.onap.pnfsimulator.message.MessageConstants.FILE_FORMAT_VERSION;
+import static org.onap.pnfsimulator.message.MessageConstants.FILE_FORMAT_VERSION_VALUE;
+import static org.onap.pnfsimulator.message.MessageConstants.HASH_MAP;
+import static org.onap.pnfsimulator.message.MessageConstants.INTERNAL_HEADER_FIELDS;
+import static org.onap.pnfsimulator.message.MessageConstants.LAST_EPOCH_MICROSEC;
+import static org.onap.pnfsimulator.message.MessageConstants.LOCATION;
+import static org.onap.pnfsimulator.message.MessageConstants.NAME;
+import static org.onap.pnfsimulator.message.MessageConstants.NOTIFICATION_FIELDS_VERSION;
+import static org.onap.pnfsimulator.message.MessageConstants.NOTIFICATION_FIELDS_VERSION_VALUE;
+import static org.onap.pnfsimulator.message.MessageConstants.PNF_LAST_SERVICE_DATE;
+import static org.onap.pnfsimulator.message.MessageConstants.PNF_MANUFACTURE_DATE;
+import static org.onap.pnfsimulator.message.MessageConstants.PNF_REGISTRATION_FIELDS_VERSION;
+import static org.onap.pnfsimulator.message.MessageConstants.PNF_REGISTRATION_FIELDS_VERSION_VALUE;
+import static org.onap.pnfsimulator.message.MessageConstants.PRIORITY;
+import static org.onap.pnfsimulator.message.MessageConstants.PRIORITY_NORMAL;
+import static org.onap.pnfsimulator.message.MessageConstants.REPORTING_ENTITY_NAME;
+import static org.onap.pnfsimulator.message.MessageConstants.SEQUENCE;
+import static org.onap.pnfsimulator.message.MessageConstants.SEQUENCE_NUMBER;
+import static org.onap.pnfsimulator.message.MessageConstants.SOURCE_NAME;
+import static org.onap.pnfsimulator.message.MessageConstants.START_EPOCH_MICROSEC;
+import static org.onap.pnfsimulator.message.MessageConstants.TIME_ZONE_OFFSET;
+import static org.onap.pnfsimulator.message.MessageConstants.VERSION;
+import static org.onap.pnfsimulator.message.MessageConstants.VERSION_NUMBER;
+import static org.onap.pnfsimulator.message.MessageConstants.VES_EVENT_LISTENER_VERSION;
+import static org.onap.pnfsimulator.message.MessageConstants.VES_EVENT_LISTENER_VERSION_NUMBER;
+import java.util.Calendar;
+import java.io.File;
+import java.util.List;
+import java.util.TimeZone;
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+final class JSONObjectFactory {
+
+    static JSONObject generateConstantCommonEventHeader() {
+        JSONObject commonEventHeader = new JSONObject();
+        long timestamp = System.currentTimeMillis();
+        String nodeName = generateDefaultName();
+        commonEventHeader.put(EVENT_ID, generateEventId());
+        commonEventHeader.put(TIME_ZONE_OFFSET, generateTimeZone(timestamp));
+        commonEventHeader.put(LAST_EPOCH_MICROSEC, timestamp);
+        commonEventHeader.put(PRIORITY, PRIORITY_NORMAL);
+        commonEventHeader.put(SEQUENCE, SEQUENCE_NUMBER);
+        commonEventHeader.put(START_EPOCH_MICROSEC, timestamp);
+        commonEventHeader.put(INTERNAL_HEADER_FIELDS, new JSONObject());
+        commonEventHeader.put(VERSION, VERSION_NUMBER);
+        commonEventHeader.put(VES_EVENT_LISTENER_VERSION, VES_EVENT_LISTENER_VERSION_NUMBER);
+        commonEventHeader.put(SOURCE_NAME, nodeName);
+        commonEventHeader.put(REPORTING_ENTITY_NAME, nodeName);
+        return commonEventHeader;
+    }
+
+    static JSONObject generatePnfRegistrationFields() {
+        JSONObject pnfRegistrationFields = new JSONObject();
+        pnfRegistrationFields.put(PNF_REGISTRATION_FIELDS_VERSION, PNF_REGISTRATION_FIELDS_VERSION_VALUE);
+        pnfRegistrationFields.put(PNF_LAST_SERVICE_DATE, String.valueOf(System.currentTimeMillis()));
+        pnfRegistrationFields.put(PNF_MANUFACTURE_DATE, String.valueOf(System.currentTimeMillis()));
+        return pnfRegistrationFields;
+    }
+
+    static JSONObject generateNotificationFields() {
+        JSONObject notificationFields = new JSONObject();
+        notificationFields.put(NOTIFICATION_FIELDS_VERSION, NOTIFICATION_FIELDS_VERSION_VALUE);
+        return notificationFields;
+    }
+
+    static JSONArray generateArrayOfNamedHashMap(List<String> fileList, String xnfUrl) {
+        JSONArray arrayOfNamedHashMap = new JSONArray();
+
+        for (String fileName : fileList) {
+            JSONObject namedHashMap = new JSONObject();
+            namedHashMap.put(NAME, fileName);
+
+            JSONObject hashMap = new JSONObject();
+            hashMap.put(FILE_FORMAT_TYPE, FILE_FORMAT_TYPE_VALUE);
+            hashMap.put(LOCATION, xnfUrl.concat(fileName));
+            hashMap.put(FILE_FORMAT_VERSION, FILE_FORMAT_VERSION_VALUE);
+            hashMap.put(COMPRESSION, COMPRESSION_VALUE);
+            namedHashMap.put(HASH_MAP, hashMap);
+
+            arrayOfNamedHashMap.put(namedHashMap);
+        }
+
+
+        return arrayOfNamedHashMap;
+    }
+
+
+    static String generateEventId() {
+        String timeAsString = String.valueOf(System.currentTimeMillis());
+        return String.format("FileReady_%s", timeAsString);
+    }
+
+    static String generateDefaultName() {
+        String defaultName = "default";
+        int year = Calendar.getInstance().get(Calendar.YEAR);
+        int month = Calendar.getInstance().get(Calendar.MONTH);
+        int day = Calendar.getInstance().get(Calendar.DAY_OF_MONTH);
+
+        return defaultName + "-" + year + month + day;
+    }
+
+    static String generateTimeZone(long timestamp) {
+        TimeZone timeZone = TimeZone.getDefault();
+        int offsetInMillis = timeZone.getOffset(timestamp);
+        String offsetHHMM = String.format("%02d:%02d", Math.abs(offsetInMillis / 3600000),
+                Math.abs((offsetInMillis / 60000) % 60));
+        return ("UTC" + (offsetInMillis >= 0 ? "+" : "-") + offsetHHMM);
+    }
+
+    private JSONObjectFactory() {
+
+    }
+
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/MessageConstants.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/MessageConstants.java
new file mode 100644
index 0000000..6ff6e5d
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/MessageConstants.java
@@ -0,0 +1,95 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.message;
+
+public final class MessageConstants {
+
+    public static final String SIMULATOR_PARAMS = "simulatorParams";
+    public static final String COMMON_EVENT_HEADER_PARAMS = "commonEventHeaderParams";
+    public static final String PNF_REGISTRATION_PARAMS = "pnfRegistrationParams";
+    public static final String NOTIFICATION_PARAMS = "notificationParams";
+
+    static final String COMMON_EVENT_HEADER = "commonEventHeader";
+    static final String PNF_REGISTRATION_FIELDS = "pnfRegistrationFields";
+    static final String NOTIFICATION_FIELDS = "notificationFields";
+    static final String EVENT = "event";
+
+    //=============================================================================================
+    //Simulation parameters
+    public static final String VES_SERVER_URL = "vesServerUrl";
+    public static final String TEST_DURATION = "testDuration";
+    public static final String MESSAGE_INTERVAL = "messageInterval";
+
+    //=============================================================================================
+    //commonEventHeader
+    //parameters
+    static final String DOMAIN = "domain";
+    static final String EVENT_ID = "eventId";
+    static final String TIME_ZONE_OFFSET = "timeZoneOffset";
+    static final String EVENT_TYPE = "eventType";
+    static final String LAST_EPOCH_MICROSEC = "lastEpochMicrosec";
+    static final String PRIORITY = "priority";
+    static final String SEQUENCE = "sequence";
+    static final String START_EPOCH_MICROSEC = "startEpochMicrosec";
+    static final String INTERNAL_HEADER_FIELDS = "internalHeaderFields";
+    static final String VERSION = "version";
+    static final String VES_EVENT_LISTENER_VERSION = "vesEventListenerVersion";
+    static final String SOURCE_NAME = "sourceName";
+    static final String REPORTING_ENTITY_NAME = "reportingEntityName";
+    //constant values
+    static final int SEQUENCE_NUMBER = 0;
+    static final String VERSION_NUMBER = "4.0.1";
+    static final String VES_EVENT_LISTENER_VERSION_NUMBER = "7.0.1";
+    static final String PRIORITY_NORMAL = "Normal";
+
+    //=============================================================================================
+    //PNF registration
+    //parameters
+    static final String PNF_REGISTRATION_FIELDS_VERSION = "pnfRegistrationFieldsVersion";
+    static final String PNF_LAST_SERVICE_DATE = "lastServiceDate";
+    static final String PNF_MANUFACTURE_DATE = "manufactureDate";
+    //constant values
+    static final String PNF_REGISTRATION_FIELDS_VERSION_VALUE = "2.0";
+    static final String DOMAIN_PNF_REGISTRATION ="pnfRegistration";
+
+    //=============================================================================================
+    // Notifications
+    //parameters
+    static final String NOTIFICATION_FIELDS_VERSION = "notificationFieldsVersion";
+    static final String ARRAY_OF_NAMED_HASH_MAP = "arrayOfNamedHashMap";
+    static final String NAME = "name";
+    static final String HASH_MAP = "hashMap";
+    static final String FILE_FORMAT_TYPE = "fileFormatType";
+    static final String LOCATION = "location";
+    static final String FILE_FORMAT_VERSION = "fileFormatVersion";
+    static final String COMPRESSION = "compression";
+
+    //constant values
+    static final String NOTIFICATION_FIELDS_VERSION_VALUE = "2.0";
+    static final String DOMAIN_NOTIFICATION ="notification";
+    static final String FILE_FORMAT_TYPE_VALUE = "org.3GPP.32.435#measCollec";
+    static final String FILE_FORMAT_VERSION_VALUE = "V10";
+    static final String COMPRESSION_VALUE = "gzip";
+
+    private MessageConstants() {
+    }
+
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/MessageProvider.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/MessageProvider.java
new file mode 100644
index 0000000..c863625
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/message/MessageProvider.java
@@ -0,0 +1,88 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================ Copyright (C)
+ * 2018 NOKIA 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.pnfsimulator.message;
+
+import static org.onap.pnfsimulator.message.MessageConstants.ARRAY_OF_NAMED_HASH_MAP;
+import static org.onap.pnfsimulator.message.MessageConstants.COMMON_EVENT_HEADER;
+import static org.onap.pnfsimulator.message.MessageConstants.DOMAIN;
+import static org.onap.pnfsimulator.message.MessageConstants.DOMAIN_NOTIFICATION;
+import static org.onap.pnfsimulator.message.MessageConstants.DOMAIN_PNF_REGISTRATION;
+import static org.onap.pnfsimulator.message.MessageConstants.EVENT;
+import static org.onap.pnfsimulator.message.MessageConstants.EVENT_TYPE;
+import static org.onap.pnfsimulator.message.MessageConstants.NOTIFICATION_FIELDS;
+import static org.onap.pnfsimulator.message.MessageConstants.PNF_REGISTRATION_FIELDS;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+public class MessageProvider {
+
+    public JSONObject createMessage(JSONObject commonEventHeaderParams, Optional<JSONObject> pnfRegistrationParams,
+            Optional<JSONObject> notificationParams) {
+        List<String> emptyList = new ArrayList<>();
+        String emptyString = "";
+        return createMessage(commonEventHeaderParams, pnfRegistrationParams, notificationParams, emptyList, emptyString);
+    }
+
+    public JSONObject createMessage(JSONObject commonEventHeaderParams, Optional<JSONObject> pnfRegistrationParams,
+            Optional<JSONObject> notificationParams, List<String> fileList, String xnfUrl) {
+
+        if (!pnfRegistrationParams.isPresent() && !notificationParams.isPresent()) {
+            throw new IllegalArgumentException(
+                    "Both PNF registration and notification parameters objects are not present");
+        }
+        JSONObject event = new JSONObject();
+
+        JSONObject commonEventHeader = JSONObjectFactory.generateConstantCommonEventHeader();
+        Map<String, Object> commonEventHeaderFields = commonEventHeaderParams.toMap();
+        commonEventHeaderFields.forEach((key, value) -> {
+            commonEventHeader.put(key, value);
+        });
+
+        JSONObject pnfRegistrationFields = JSONObjectFactory.generatePnfRegistrationFields();
+        pnfRegistrationParams.ifPresent(jsonObject -> {
+            copyParametersToFields(jsonObject.toMap(), pnfRegistrationFields);
+            commonEventHeader.put(DOMAIN, DOMAIN_PNF_REGISTRATION);
+            commonEventHeader.put(EVENT_TYPE, DOMAIN_PNF_REGISTRATION);
+            event.put(PNF_REGISTRATION_FIELDS, pnfRegistrationFields);
+        });
+
+        JSONObject notificationFields = JSONObjectFactory.generateNotificationFields();
+        notificationParams.ifPresent(jsonObject -> {
+            copyParametersToFields(jsonObject.toMap(), notificationFields);
+            JSONArray arrayOfNamedHashMap = JSONObjectFactory.generateArrayOfNamedHashMap(fileList, xnfUrl);
+            notificationFields.put(ARRAY_OF_NAMED_HASH_MAP, arrayOfNamedHashMap);
+            commonEventHeader.put(DOMAIN, DOMAIN_NOTIFICATION);
+            event.put(NOTIFICATION_FIELDS, notificationFields);
+        });
+
+        event.put(COMMON_EVENT_HEADER, commonEventHeader);
+        JSONObject root = new JSONObject();
+        root.put(EVENT, event);
+        return root;
+    }
+
+    private void copyParametersToFields(Map<String, Object> paramersMap, JSONObject fieldsJsonObject) {
+        paramersMap.forEach((key, value) -> {
+            fieldsJsonObject.put(key, value);
+        });
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfConfigurationCheckingTask.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfConfigurationCheckingTask.java
new file mode 100644
index 0000000..bb173ae
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfConfigurationCheckingTask.java
@@ -0,0 +1,62 @@
+/// *
+// * ============LICENSE_START=======================================================
+// * PNF-REGISTRATION-HANDLER
+// * ================================================================================
+// * Copyright (C) 2018 NOKIA 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.pnfsimulator.netconfmonitor;
+//
+// import com.tailf.jnc.JNCException;
+// import java.io.IOException;
+// import java.util.TimerTask;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationCache;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationReader;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationWriter;
+// import org.slf4j.Logger;
+// import org.slf4j.LoggerFactory;
+//
+// public class NetconfConfigurationCheckingTask extends TimerTask {
+//
+// private static final Logger LOGGER =
+/// LoggerFactory.getLogger(NetconfConfigurationCheckingTask.class);
+//
+// private final NetconfConfigurationReader reader;
+// private final NetconfConfigurationWriter writer;
+// private final NetconfConfigurationCache cache;
+//
+// public NetconfConfigurationCheckingTask(NetconfConfigurationReader reader,
+// NetconfConfigurationWriter writer,
+// NetconfConfigurationCache cache) {
+// this.reader = reader;
+// this.writer = writer;
+// this.cache = cache;
+// }
+//
+// @Override
+// public void run() {
+// try {
+// String currentConfiguration = reader.read();
+// if (!currentConfiguration.equals(cache.getConfiguration())) {
+// LOGGER.info("Configuration has changed, new configuration:\n\n{}", currentConfiguration);
+// writer.writeToFile(currentConfiguration);
+// cache.update(currentConfiguration);
+// }
+// } catch (IOException | JNCException e) {
+// LOGGER.warn("Error during configuration reading: {}", e.getMessage());
+// }
+// }
+// }
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfMonitorService.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfMonitorService.java
new file mode 100644
index 0000000..4e484b9
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfMonitorService.java
@@ -0,0 +1,71 @@
+/// *
+// * ============LICENSE_START=======================================================
+// * PNF-REGISTRATION-HANDLER
+// * ================================================================================ Copyright (C)
+// * 2018 NOKIA 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.pnfsimulator.netconfmonitor;
+//
+// import com.tailf.jnc.JNCException;
+// import java.io.IOException;
+// import java.util.Timer;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationCache;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationReader;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationWriter;
+// import org.slf4j.Logger;
+// import org.slf4j.LoggerFactory;
+// import org.springframework.beans.factory.annotation.Autowired;
+//
+//// @Service
+// public class NetconfMonitorService {
+// private static final Logger LOGGER = LoggerFactory.getLogger(NetconfMonitorService.class);
+// private static final long timePeriod = 1000L;
+// private static final long startDelay = 0;
+//
+// private Timer timer;
+// private NetconfConfigurationReader reader;
+// private NetconfConfigurationWriter writer;
+// private NetconfConfigurationCache cache;
+//
+// @Autowired
+// public NetconfMonitorService(Timer timer, NetconfConfigurationReader reader,
+/// NetconfConfigurationWriter writer,
+// NetconfConfigurationCache cache) {
+// this.timer = timer;
+// this.reader = reader;
+// this.writer = writer;
+// this.cache = cache;
+// }
+//
+// // @PostConstruct
+// public void start() {
+// setStartConfiguration();
+// NetconfConfigurationCheckingTask task = new NetconfConfigurationCheckingTask(reader, writer,
+/// cache);
+// timer.scheduleAtFixedRate(task, startDelay, timePeriod);
+// }
+//
+// private void setStartConfiguration() {
+// try {
+// String configuration = reader.read();
+// writer.writeToFile(configuration);
+// cache.update(configuration);
+// } catch (IOException | JNCException e) {
+// LOGGER.warn("Error during configuration reading: {}", e.getMessage());
+// }
+// }
+// }
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfMonitorServiceConfiguration.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfMonitorServiceConfiguration.java
new file mode 100644
index 0000000..d97315b
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/NetconfMonitorServiceConfiguration.java
@@ -0,0 +1,114 @@
+/// *
+// * ============LICENSE_START=======================================================
+// * PNF-REGISTRATION-HANDLER
+// * ================================================================================
+// * Copyright (C) 2018 NOKIA 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.pnfsimulator.netconfmonitor;
+//
+// import com.tailf.jnc.JNCException;
+// import com.tailf.jnc.NetconfSession;
+// import com.tailf.jnc.SSHConnection;
+// import com.tailf.jnc.SSHSession;
+// import java.io.IOException;
+// import java.util.Map;
+// import java.util.Timer;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationCache;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationReader;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConfigurationWriter;
+// import org.onap.pnfsimulator.netconfmonitor.netconf.NetconfConnectionParams;
+// import org.slf4j.Logger;
+// import org.slf4j.LoggerFactory;
+// import org.springframework.context.annotation.Bean;
+// import org.springframework.context.annotation.Configuration;
+//
+// @Configuration
+// public class NetconfMonitorServiceConfiguration {
+//
+// private static final Logger LOGGER =
+/// LoggerFactory.getLogger(NetconfMonitorServiceConfiguration.class);
+// private static final Map<String, String> enviroment = System.getenv();
+//
+// private static final String LOG_PATH = "/var/log";
+//
+// private static final String NETCONF_ADDRESS = "NETCONF_ADDRESS";
+// private static final String NETCONF_PORT = "NETCONF_PORT";
+// private static final String NETCONF_MODEL = "NETCONF_MODEL";
+// private static final String NETCONF_MAIN_CONTAINER = "NETCONF_MAIN_CONTAINER";
+//
+// private static final String DEFAULT_NETCONF_ADDRESS = "localhost";
+// private static final int DEFAULT_NETCONF_PORT = 830;
+// private static final String DEFAULT_NETCONF_MODEL = "pnf-simulator";
+// private static final String DEFAULT_NETCONF_MAIN_CONTAINER = "config";
+//
+// private static final String DEFAULT_NETCONF_USER = "netconf";
+// private static final String DEFAULT_NETCONF_PASSWORD = "netconf";
+//
+// @Bean
+// public Timer timer() {
+// return new Timer("NetconfMonitorServiceTimer");
+// }
+//
+// @Bean
+// public NetconfConfigurationCache configurationCache() {
+// return new NetconfConfigurationCache();
+// }
+//
+// @Bean
+// public NetconfConfigurationReader configurationReader() throws IOException, JNCException {
+// NetconfConnectionParams params = resolveConnectionParams();
+// LOGGER.info("Configuration params are : {}", params);
+// NetconfSession session = createNetconfSession(params);
+// return new NetconfConfigurationReader(session, buildModelPath());
+// }
+//
+// NetconfSession createNetconfSession(NetconfConnectionParams params) throws IOException,
+/// JNCException {
+// SSHConnection sshConnection = new SSHConnection(params.address, params.port);
+// sshConnection.authenticateWithPassword(params.user, params.password);
+// return new NetconfSession( new SSHSession(sshConnection));
+// }
+//
+// @Bean
+// public NetconfConfigurationWriter netconfConfigurationWriter() {
+// return new NetconfConfigurationWriter(LOG_PATH);
+// }
+//
+// private String buildModelPath() {
+// return String.format("/%s:%s",
+// enviroment.getOrDefault(NETCONF_MODEL, DEFAULT_NETCONF_MODEL),
+// enviroment.getOrDefault(NETCONF_MAIN_CONTAINER, DEFAULT_NETCONF_MAIN_CONTAINER));
+// }
+//
+// NetconfConnectionParams resolveConnectionParams() {
+// return new NetconfConnectionParams(
+// enviroment.getOrDefault(NETCONF_ADDRESS, DEFAULT_NETCONF_ADDRESS),
+// resolveNetconfPort(),
+// DEFAULT_NETCONF_USER,
+// DEFAULT_NETCONF_PASSWORD);
+// }
+//
+// private int resolveNetconfPort() {
+// try {
+// return Integer.parseInt(enviroment.get(NETCONF_PORT));
+// } catch (NumberFormatException e) {
+// LOGGER.warn("Invalid netconf port: {}. Default netconf port {} is set.", e.getMessage(),
+// DEFAULT_NETCONF_PORT);
+// return DEFAULT_NETCONF_PORT;
+// }
+// }
+// }
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationCache.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationCache.java
new file mode 100644
index 0000000..3972184
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationCache.java
@@ -0,0 +1,34 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.netconfmonitor.netconf;
+
+public class NetconfConfigurationCache {
+
+    private String configuration = "";
+
+    public String getConfiguration() {
+        return configuration;
+    }
+
+    public void update(String configuration) {
+        this.configuration = configuration;
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationReader.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationReader.java
new file mode 100644
index 0000000..e41e58f
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationReader.java
@@ -0,0 +1,42 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================ Copyright (C)
+ * 2018 NOKIA 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.pnfsimulator.netconfmonitor.netconf;
+
+import com.tailf.jnc.JNCException;
+import com.tailf.jnc.NetconfSession;
+import java.io.IOException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+public class NetconfConfigurationReader {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(NetconfConfigurationReader.class);
+    private final NetconfSession session;
+    private final String netconfModelPath;
+
+    public NetconfConfigurationReader(NetconfSession session, String netconfModelPath) {
+        LOGGER.warn("netconfModelPath: {}", netconfModelPath);
+        this.session = session;
+        this.netconfModelPath = netconfModelPath;
+    }
+
+    public String read() throws IOException, JNCException {
+        return session.getConfig(netconfModelPath).first().toXMLString();
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationWriter.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationWriter.java
new file mode 100644
index 0000000..4003079
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConfigurationWriter.java
@@ -0,0 +1,51 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.netconfmonitor.netconf;
+
+import java.io.BufferedWriter;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import org.onap.pnfsimulator.rest.util.DateUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class NetconfConfigurationWriter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(NetconfConfigurationWriter.class);
+    private static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd_HH:mm:ss");
+    private String pathToLog;
+
+    public NetconfConfigurationWriter(String pathToLog) {
+        this.pathToLog = pathToLog;
+    }
+
+    public void writeToFile(String configuration) {
+        String fileName = String.format("%s/config[%s].xml", pathToLog, DateUtil.getTimestamp(dateFormat));
+        try (BufferedWriter writer = new BufferedWriter(new FileWriter(fileName))) {
+            writer.write(configuration);
+            LOGGER.info("Configuration wrote to file {}/{} ", pathToLog, fileName);
+        } catch (IOException e) {
+            LOGGER.warn("Failed to write configuration to file: {}", e.getMessage());
+        }
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConnectionParams.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConnectionParams.java
new file mode 100644
index 0000000..1d6eb89
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/netconfmonitor/netconf/NetconfConnectionParams.java
@@ -0,0 +1,45 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.netconfmonitor.netconf;
+
+public class NetconfConnectionParams {
+
+    public final String address;
+    public final int port;
+    public final String user;
+    public final String password;
+
+    public NetconfConnectionParams(String address, int port, String user, String password) {
+        this.address = address;
+        this.port = port;
+        this.user = user;
+        this.password = password;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("NetconfConnectionParams{address=%s, port=%d, user=%s, password=%s}",
+            address,
+            port,
+            user,
+            password);
+    }
+}
\ No newline at end of file
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/SimulatorController.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/SimulatorController.java
new file mode 100644
index 0000000..7bb646c
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/SimulatorController.java
@@ -0,0 +1,235 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================ Copyright (C)
+ * 2018 NOKIA 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.pnfsimulator.rest;
+
+import static org.onap.pnfsimulator.logging.MDCVariables.INSTANCE_UUID;
+import static org.onap.pnfsimulator.logging.MDCVariables.INVOCATION_ID;
+import static org.onap.pnfsimulator.logging.MDCVariables.REQUEST_ID;
+import static org.onap.pnfsimulator.logging.MDCVariables.RESPONSE_CODE;
+import static org.onap.pnfsimulator.logging.MDCVariables.SERVICE_NAME;
+import static org.onap.pnfsimulator.logging.MDCVariables.X_INVOCATION_ID;
+import static org.onap.pnfsimulator.logging.MDCVariables.AUTHORIZATION;
+import static org.onap.pnfsimulator.logging.MDCVariables.X_ONAP_REQUEST_ID;
+import static org.onap.pnfsimulator.message.MessageConstants.COMMON_EVENT_HEADER_PARAMS;
+import static org.onap.pnfsimulator.message.MessageConstants.SIMULATOR_PARAMS;
+import static org.onap.pnfsimulator.rest.util.ResponseBuilder.MESSAGE;
+import static org.onap.pnfsimulator.rest.util.ResponseBuilder.REMAINING_TIME;
+import static org.onap.pnfsimulator.rest.util.ResponseBuilder.SIMULATOR_STATUS;
+import static org.onap.pnfsimulator.rest.util.ResponseBuilder.TIMESTAMP;
+import static org.springframework.http.HttpStatus.BAD_REQUEST;
+import static org.springframework.http.HttpStatus.INTERNAL_SERVER_ERROR;
+import static org.springframework.http.HttpStatus.OK;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Optional;
+import java.util.UUID;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.onap.pnfsimulator.message.MessageConstants;
+import org.onap.pnfsimulator.rest.util.DateUtil;
+import org.onap.pnfsimulator.rest.util.ResponseBuilder;
+import org.onap.pnfsimulator.simulator.Simulator;
+import org.onap.pnfsimulator.simulator.SimulatorFactory;
+import org.onap.pnfsimulator.simulator.validation.JSONValidator;
+import org.onap.pnfsimulator.simulator.validation.ValidationException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/simulator")
+public class SimulatorController {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Simulator.class);
+    private static final DateFormat RESPONSE_DATE_FORMAT = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss,SSS");
+    private final Marker ENTRY = MarkerFactory.getMarker("ENTRY");
+    private Simulator simulator;
+    private JSONValidator validator;
+    private SimulatorFactory factory;
+
+    @Autowired
+    public SimulatorController(JSONValidator validator, SimulatorFactory factory) {
+        this.validator = validator;
+        this.factory = factory;
+    }
+
+    @PostMapping("start")
+    public ResponseEntity start(@RequestHeader HttpHeaders headers, @RequestBody String message) {
+        MDC.put(REQUEST_ID, headers.getFirst(X_ONAP_REQUEST_ID));
+        MDC.put(INVOCATION_ID, headers.getFirst(X_INVOCATION_ID));
+        MDC.put(AUTHORIZATION, headers.getFirst(AUTHORIZATION));
+        MDC.put(INSTANCE_UUID, UUID.randomUUID().toString());
+        MDC.put(SERVICE_NAME, "/simulator/start");
+        LOGGER.info(ENTRY, "Simulator starting");
+
+        if (isSimulatorRunning()) {
+            MDC.put(RESPONSE_CODE, BAD_REQUEST.toString());
+            return ResponseBuilder.status(BAD_REQUEST).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Cannot start simulator since it's already running").build();
+        }
+
+        try {
+            validator.validate(message, "json_schema/input_validator.json");
+            JSONObject root = new JSONObject(message);
+            JSONObject simulatorParams = root.getJSONObject(SIMULATOR_PARAMS);
+            JSONObject commonEventHeaderParams = root.getJSONObject(COMMON_EVENT_HEADER_PARAMS);
+            Optional<JSONObject> pnfRegistrationFields = root.has(MessageConstants.PNF_REGISTRATION_PARAMS)
+                    ? Optional.of(root.getJSONObject(MessageConstants.PNF_REGISTRATION_PARAMS))
+                    : Optional.empty();
+            Optional<JSONObject> notificationFields = root.has(MessageConstants.NOTIFICATION_PARAMS)
+                    ? Optional.of(root.getJSONObject(MessageConstants.NOTIFICATION_PARAMS))
+                    : Optional.empty();
+            simulator =
+                    factory.create(simulatorParams, commonEventHeaderParams, pnfRegistrationFields, notificationFields);
+            simulator.start();
+
+            MDC.put(RESPONSE_CODE, OK.toString());
+            return ResponseBuilder.status(OK).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Simulator started").build();
+
+        } catch (JSONException e) {
+            MDC.put(RESPONSE_CODE, BAD_REQUEST.toString());
+            LOGGER.warn("Cannot start simulator, invalid json format: {}", e.getMessage());
+            LOGGER.debug("Received json has invalid format", e);
+            return ResponseBuilder.status(BAD_REQUEST).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Cannot start simulator, invalid json format").build();
+
+        } catch (ProcessingException | ValidationException | IOException e) {
+            MDC.put(RESPONSE_CODE, BAD_REQUEST.toString());
+            LOGGER.warn("Json validation failed: {}", e.getMessage());
+            return ResponseBuilder.status(BAD_REQUEST).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Cannot start simulator - Json format is not compatible with schema definitions")
+                    .build();
+
+        } catch (Exception e) {
+            MDC.put(RESPONSE_CODE, INTERNAL_SERVER_ERROR.toString());
+            LOGGER.error("Cannot start simulator - unexpected exception", e);
+            return ResponseBuilder.status(INTERNAL_SERVER_ERROR)
+                    .put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Unexpected exception: " + e.getMessage()).build();
+        } finally {
+            MDC.clear();
+        }
+    }
+
+    @PostMapping("startmassmode")
+    public ResponseEntity startmassmode(@RequestHeader HttpHeaders headers, @RequestBody String message) {
+        MDC.put(REQUEST_ID, headers.getFirst(X_ONAP_REQUEST_ID));
+        MDC.put(INVOCATION_ID, headers.getFirst(X_INVOCATION_ID));
+        MDC.put(AUTHORIZATION, headers.getFirst(AUTHORIZATION));
+        MDC.put(INSTANCE_UUID, UUID.randomUUID().toString());
+        MDC.put(SERVICE_NAME, "/simulator/start");
+        LOGGER.info(ENTRY, "Simulator starting");
+
+        if (isSimulatorRunning()) {
+            MDC.put(RESPONSE_CODE, BAD_REQUEST.toString());
+            return ResponseBuilder.status(BAD_REQUEST).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Cannot start simulator since it's already running").build();
+        }
+
+        try {
+            validator.validate(message, "json_schema/input_validator.json");
+            JSONObject root = new JSONObject(message);
+            JSONObject simulatorParams = root.getJSONObject(SIMULATOR_PARAMS);
+            JSONObject commonEventHeaderParams = root.getJSONObject(COMMON_EVENT_HEADER_PARAMS);
+            Optional<JSONObject> pnfRegistrationFields = root.has(MessageConstants.PNF_REGISTRATION_PARAMS)
+                    ? Optional.of(root.getJSONObject(MessageConstants.PNF_REGISTRATION_PARAMS))
+                    : Optional.empty();
+            Optional<JSONObject> notificationFields = root.has(MessageConstants.NOTIFICATION_PARAMS)
+                    ? Optional.of(root.getJSONObject(MessageConstants.NOTIFICATION_PARAMS))
+                    : Optional.empty();
+            simulator =
+                    factory.create(simulatorParams, commonEventHeaderParams, pnfRegistrationFields, notificationFields);
+            simulator.start();
+
+            MDC.put(RESPONSE_CODE, OK.toString());
+            return ResponseBuilder.status(OK).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Simulator started").build();
+
+        } catch (JSONException e) {
+            MDC.put(RESPONSE_CODE, BAD_REQUEST.toString());
+            LOGGER.warn("Cannot start simulator, invalid json format: {}", e.getMessage());
+            LOGGER.debug("Received json has invalid format", e);
+            return ResponseBuilder.status(BAD_REQUEST).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Cannot start simulator, invalid json format").build();
+
+        } catch (ProcessingException | ValidationException | IOException e) {
+            MDC.put(RESPONSE_CODE, BAD_REQUEST.toString());
+            LOGGER.warn("Json validation failed: {}", e.getMessage());
+            return ResponseBuilder.status(BAD_REQUEST).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Cannot start simulator - Json format is not compatible with schema definitions")
+                    .build();
+
+        } catch (Exception e) {
+            MDC.put(RESPONSE_CODE, INTERNAL_SERVER_ERROR.toString());
+            LOGGER.error("Cannot start simulator - unexpected exception", e);
+            return ResponseBuilder.status(INTERNAL_SERVER_ERROR)
+                    .put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Unexpected exception: " + e.getMessage()).build();
+        } finally {
+            MDC.clear();
+        }
+    }
+
+
+
+    @GetMapping("status")
+    public ResponseEntity status() {
+        if (isSimulatorRunning()) {
+            ResponseBuilder responseBuilder = ResponseBuilder.status(OK)
+                    .put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT)).put(SIMULATOR_STATUS, "RUNNING");
+
+            return !simulator.isEndless() ? responseBuilder.put(REMAINING_TIME, simulator.getRemainingTime()).build()
+                    : responseBuilder.build();
+        } else {
+            return ResponseBuilder.status(OK).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(SIMULATOR_STATUS, "NOT RUNNING").build();
+        }
+    }
+
+    @PostMapping("stop")
+    public ResponseEntity stop() {
+        if (isSimulatorRunning()) {
+            simulator.interrupt();
+
+            return ResponseBuilder.status(OK).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Simulator successfully stopped").build();
+        } else {
+            return ResponseBuilder.status(BAD_REQUEST).put(TIMESTAMP, DateUtil.getTimestamp(RESPONSE_DATE_FORMAT))
+                    .put(MESSAGE, "Cannot stop simulator, because it's not running").build();
+        }
+    }
+
+    private boolean isSimulatorRunning() {
+        return simulator != null && simulator.isAlive();
+    }
+}
+
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/util/DateUtil.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/util/DateUtil.java
new file mode 100644
index 0000000..284d589
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/util/DateUtil.java
@@ -0,0 +1,35 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.rest.util;
+
+import java.text.DateFormat;
+import java.util.Date;
+
+public final class DateUtil {
+
+    private DateUtil() {
+    }
+
+    public static String getTimestamp(DateFormat dateFormat) {
+
+        return dateFormat.format(new Date());
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/util/ResponseBuilder.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/util/ResponseBuilder.java
new file mode 100644
index 0000000..98f4588
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/rest/util/ResponseBuilder.java
@@ -0,0 +1,62 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.rest.util;
+
+import java.util.LinkedHashMap;
+import java.util.Map;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+
+public class ResponseBuilder {
+
+    public static final String TIMESTAMP = "timestamp";
+    public static final String MESSAGE = "message";
+    public static final String SIMULATOR_STATUS = "simulatorStatus";
+    public static final String REMAINING_TIME = "remainingTime";
+
+    private HttpStatus httpStatus;
+    private Map<String, Object> body = new LinkedHashMap<>();
+
+    private ResponseBuilder(HttpStatus httpStatus) {
+        this.httpStatus = httpStatus;
+    }
+
+    public static ResponseBuilder status(HttpStatus httpStatus) {
+
+        return new ResponseBuilder(httpStatus);
+    }
+
+    public ResponseBuilder put(String key, Object value) {
+
+        body.put(key, value);
+        return this;
+    }
+
+    public ResponseEntity build() {
+
+        if (body.isEmpty()) {
+            return ResponseEntity.status(httpStatus).build();
+        }
+
+        return ResponseEntity.status(httpStatus).body(body);
+    }
+
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/Simulator.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/Simulator.java
new file mode 100644
index 0000000..725fe43
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/Simulator.java
@@ -0,0 +1,213 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================ Copyright (C)
+ * 2018 NOKIA 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.pnfsimulator.simulator;
+
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import java.io.IOException;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+import org.json.JSONObject;
+import org.onap.pnfsimulator.FileProvider;
+import org.onap.pnfsimulator.message.MessageProvider;
+import org.onap.pnfsimulator.simulator.client.RestTemplateAdapter;
+import org.onap.pnfsimulator.simulator.client.RestTemplateAdapterImpl;
+import org.onap.pnfsimulator.simulator.validation.JSONValidator;
+import org.onap.pnfsimulator.simulator.validation.NoRopFilesException;
+import org.onap.pnfsimulator.simulator.validation.ValidationException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
+
+public class Simulator extends Thread {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(Simulator.class);
+    private final Marker EXIT = MarkerFactory.getMarker("EXIT");
+    private Map<String, String> contextMap = MDC.getCopyOfContextMap();
+    private boolean isEndless;
+    private String vesUrl;
+    private RestTemplateAdapter httpClient;
+    private JSONObject messageBody;
+    private Duration duration;
+    private Duration interval;
+    private Instant endTime;
+    private JSONObject commonEventHeaderParams;
+    private Optional<JSONObject> pnfRegistrationParams;
+    private Optional<JSONObject> notificationParams;
+    private String xnfUrl;
+    private static final String DEFAULT_OUTPUT_SCHEMA_PATH = "json_schema/output_validator_ves_schema_30.0.1.json";
+    private FileProvider fileProvider;
+    private Exception thrownException = null;
+
+    private Simulator() {}
+
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    @Override
+    public void run() {
+        setMdcContextMap(contextMap);
+        LOGGER.info("Simulation started - duration: {}, interval: {}s", getDuration(), interval.getSeconds());
+        endTime = Instant.now().plus(duration);
+        while (isEndless || runningTimeNotExceeded()) {
+            try {
+
+                List<String> fileList = fileProvider.getFiles();
+                MessageProvider messageProvider = new MessageProvider();
+                JSONValidator validator = new JSONValidator();
+                messageBody = messageProvider.createMessage(this.commonEventHeaderParams, this.pnfRegistrationParams,
+                        this.notificationParams, fileList, this.xnfUrl);
+                validator.validate(messageBody.toString(), DEFAULT_OUTPUT_SCHEMA_PATH);
+
+                LOGGER.info("Message to be sent:\n" + getMessage());
+                httpClient.send(messageBody.toString(), vesUrl);
+                Thread.sleep(interval.toMillis());
+            } catch (InterruptedException  | ValidationException | ProcessingException | IOException | NoRopFilesException e) {
+                LOGGER.info("Simulation stopped due to an exception: " + e);
+                thrownException = e;
+                return;
+            }
+        }
+        LOGGER.info(EXIT, "Simulation finished");
+        MDC.clear();
+    }
+
+    private void setMdcContextMap(Map<String, String> mdcContextMap) {
+        if (mdcContextMap != null)
+            MDC.setContextMap(mdcContextMap);
+    }
+
+    private String getMessage() {
+        return messageBody.toString(4);
+    }
+
+    private String getDuration() {
+        return isEndless() ? "infinity" : duration.getSeconds() + "s";
+    }
+
+    private boolean runningTimeNotExceeded() {
+        return Instant.now().isBefore(endTime);
+    }
+
+    public boolean isEndless() {
+        return isEndless;
+    }
+
+    public Exception getThrownException() {
+        return thrownException;
+    }
+
+    public long getRemainingTime() {
+        return Duration.between(Instant.now(), endTime).getSeconds();
+    }
+
+    public static class Builder {
+
+        private String vesUrl;
+        private RestTemplateAdapter httpClient;
+        //private JSONObject messageBody;
+        private Duration duration;
+        private Duration interval;
+        private Optional<JSONObject> notificationParams;
+        private Optional<JSONObject> pnfRegistrationParams;
+        private JSONObject commonEventHeaderParams;
+        private String xnfUrl;
+        private FileProvider fileProvider;
+
+        private Builder() {
+            this.vesUrl = "";
+            this.httpClient = new RestTemplateAdapterImpl();
+            //this.messageBody = new JSONObject();
+            this.duration = Duration.ZERO;
+            this.interval = Duration.ZERO;
+            this.commonEventHeaderParams = new JSONObject();
+        }
+
+        public Builder withVesUrl(String vesUrl) {
+            this.vesUrl = vesUrl;
+            return this;
+        }
+
+        public Builder withCustomRestTemplateAdapter(RestTemplateAdapter httpClient) {
+            this.httpClient = httpClient;
+            return this;
+        }
+
+        /*public Builder withMessageBody(JSONObject messageBody) {
+            this.messageBody = messageBody;
+            return this;
+        }*/
+
+        public Builder withDuration(Duration duration) {
+            this.duration = duration;
+            return this;
+        }
+
+
+        public Builder withInterval(Duration interval) {
+            this.interval = interval;
+            return this;
+        }
+
+        public Builder withCommonEventHeaderParams(JSONObject commonEventHeaderParams) {
+            this.commonEventHeaderParams = commonEventHeaderParams;
+            return this;
+        }
+
+        public Builder withNotificationParams(Optional<JSONObject> notificationParams) {
+            this.notificationParams = notificationParams;
+            return this;
+        }
+
+        public Builder withPnfRegistrationParams(Optional<JSONObject> pnfRegistrationParams) {
+            this.pnfRegistrationParams = pnfRegistrationParams;
+            return this;
+        }
+
+        public Builder withXnfUrl(String xnfUrl) {
+            this.xnfUrl = xnfUrl;
+            return this;
+        }
+
+        public Builder withFileProvider(FileProvider fileProvider) {
+            this.fileProvider = fileProvider;
+            return this;
+        }
+
+        public Simulator build() {
+            Simulator simulator = new Simulator();
+            simulator.vesUrl = this.vesUrl;
+            simulator.httpClient = this.httpClient;
+            //simulator.messageBody = this.messageBody;
+            simulator.duration = this.duration;
+            simulator.interval = this.interval;
+            simulator.xnfUrl = this.xnfUrl;
+            simulator.fileProvider = this.fileProvider;
+            simulator.commonEventHeaderParams = this.commonEventHeaderParams;
+            simulator.pnfRegistrationParams = this.pnfRegistrationParams;
+            simulator.notificationParams = this.notificationParams;
+            simulator.isEndless = duration.equals(Duration.ZERO);
+            return simulator;
+        }
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/SimulatorFactory.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/SimulatorFactory.java
new file mode 100644
index 0000000..851e6ad
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/SimulatorFactory.java
@@ -0,0 +1,54 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================ Copyright (C)
+ * 2018 NOKIA 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.pnfsimulator.simulator;
+
+import static java.lang.Integer.parseInt;
+import static org.onap.pnfsimulator.message.MessageConstants.MESSAGE_INTERVAL;
+import static org.onap.pnfsimulator.message.MessageConstants.TEST_DURATION;
+import java.time.Duration;
+import java.util.Optional;
+import org.json.JSONObject;
+import org.onap.pnfsimulator.ConfigurationProvider;
+import org.onap.pnfsimulator.FileProvider;
+import org.onap.pnfsimulator.PnfSimConfig;
+import org.springframework.stereotype.Service;
+
+@Service
+public class SimulatorFactory {
+
+    public Simulator create(JSONObject simulatorParams, JSONObject commonEventHeaderParams,
+            Optional<JSONObject> pnfRegistrationParams, Optional<JSONObject> notificationParams) {
+        PnfSimConfig configuration = ConfigurationProvider.getConfigInstance();
+
+        String xnfUrl = null;
+        if (configuration.getTypefileserver().equals("sftp")) {
+            xnfUrl = configuration.getUrlsftp() + "/";
+        } else if (configuration.getTypefileserver().equals("ftps")) {
+            xnfUrl = configuration.getUrlftps() + "/";
+        }
+
+        String urlVes = configuration.getUrlves();
+        Duration duration = Duration.ofSeconds(parseInt(simulatorParams.getString(TEST_DURATION)));
+        Duration interval = Duration.ofSeconds(parseInt(simulatorParams.getString(MESSAGE_INTERVAL)));
+
+        return Simulator.builder().withVesUrl(urlVes).withXnfUrl(xnfUrl).withDuration(duration)
+                .withFileProvider(new FileProvider()).withCommonEventHeaderParams(commonEventHeaderParams)
+                .withNotificationParams(notificationParams).withPnfRegistrationParams(pnfRegistrationParams)
+                .withInterval(interval).build();
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/client/RestTemplateAdapter.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/client/RestTemplateAdapter.java
new file mode 100644
index 0000000..92e66b4
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/client/RestTemplateAdapter.java
@@ -0,0 +1,26 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.simulator.client;
+
+public interface RestTemplateAdapter {
+
+    void send(String content, String url);
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/client/RestTemplateAdapterImpl.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/client/RestTemplateAdapterImpl.java
new file mode 100644
index 0000000..e082637
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/client/RestTemplateAdapterImpl.java
@@ -0,0 +1,155 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.simulator.client;
+
+import static org.onap.pnfsimulator.logging.MDCVariables.REQUEST_ID;
+import static org.onap.pnfsimulator.logging.MDCVariables.X_INVOCATION_ID;
+import static org.onap.pnfsimulator.logging.MDCVariables.X_ONAP_REQUEST_ID;
+import static org.onap.pnfsimulator.logging.MDCVariables.AUTHORIZATION;
+
+import org.springframework.web.client.ResourceAccessException;
+import java.security.KeyManagementException;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.X509Certificate;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509TrustManager;
+import org.apache.http.conn.ssl.NoopHostnameVerifier;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
+import org.springframework.web.client.RestTemplate;
+
+import org.springframework.http.HttpEntity;
+import org.springframework.http.ResponseEntity;
+import org.springframework.http.HttpHeaders;
+
+import java.util.UUID;
+import org.springframework.web.client.HttpClientErrorException;
+import org.apache.http.client.config.RequestConfig;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
+
+public class RestTemplateAdapterImpl implements RestTemplateAdapter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(RestTemplateAdapterImpl.class);
+    private static final String CONTENT_TYPE = "Content-Type";
+    private static final String APPLICATION_JSON = "application/json";
+    private final Marker INVOKE = MarkerFactory.getMarker("INVOKE");
+    private static final RequestConfig CONFIG = RequestConfig.custom()
+        .setConnectTimeout(1000)
+        .setConnectionRequestTimeout(1000)
+        .setSocketTimeout(1000)
+        .build();
+
+    private RestTemplate restTemplate;
+
+    public RestTemplateAdapterImpl() {
+        try {
+        this.restTemplate = createRestTemplate();
+        } catch (KeyStoreException | NoSuchAlgorithmException | KeyManagementException ex) {
+            LOGGER.warn("Error while creating a RestTemplate object: {}", ex.getMessage());
+        }
+    }
+
+    RestTemplateAdapterImpl(RestTemplate restTemplate) {
+        this.restTemplate = restTemplate;
+    }
+
+    @Override
+    public void send(String content, String url) {
+        try {
+            HttpEntity<String> entity = createPostEntity(content);
+            ResponseEntity<String> response = restTemplate.postForEntity(url, entity, String.class);
+            LOGGER.info(INVOKE, "Message sent, ves response code: {}", response.getStatusCode());
+        } catch (HttpClientErrorException codeEx) {
+            LOGGER.warn("Response body: ", codeEx.getResponseBodyAsString());
+            LOGGER.warn("Error sending message to ves: {}", codeEx.getMessage());
+            LOGGER.warn("URL: {}", url);
+        } catch (ResourceAccessException ioEx) {
+            LOGGER.warn("The URL cannot be reached: {}", ioEx.getMessage());
+            LOGGER.warn("URL: {}", url);
+        }
+    }
+
+    private CloseableHttpClient createClient()
+    throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
+
+        TrustManager[] trustAllCerts = new TrustManager[] {
+            new X509TrustManager() {
+
+                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+                    return new X509Certificate[0];
+                }
+
+                public void checkClientTrusted(
+                    java.security.cert.X509Certificate[] certs,
+                    String authType) {}
+
+                public void checkServerTrusted(
+                    java.security.cert.X509Certificate[] certs,
+                    String authType) {}
+            }
+        };
+
+        SSLContext sslContext = SSLContext.getInstance("TLS");
+        sslContext.init(
+            null,
+            trustAllCerts,
+            new java.security.SecureRandom()
+        );
+
+        CloseableHttpClient httpClient = HttpClients
+            .custom()
+            .setSSLContext(sslContext)
+            .setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
+            .build();
+
+        return httpClient;
+    }
+
+    private RestTemplate createRestTemplate()
+    throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
+
+        CloseableHttpClient client = createClient();
+        HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
+        requestFactory.setHttpClient(client);
+
+        return new RestTemplate(requestFactory);
+
+    }
+
+    private HttpEntity createPostEntity(String content) {
+
+        HttpHeaders headers = new HttpHeaders();
+        headers.set(CONTENT_TYPE, APPLICATION_JSON);
+        headers.set(AUTHORIZATION, MDC.get(AUTHORIZATION));
+        headers.set(X_ONAP_REQUEST_ID, MDC.get(REQUEST_ID));
+        headers.set(X_INVOCATION_ID, UUID.randomUUID().toString());
+
+        return new HttpEntity<>(content, headers);
+
+    }
+}
\ No newline at end of file
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/JSONValidator.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/JSONValidator.java
new file mode 100644
index 0000000..89135f9
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/JSONValidator.java
@@ -0,0 +1,66 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.simulator.validation;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.github.fge.jackson.JsonLoader;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import com.github.fge.jsonschema.core.report.LogLevel;
+import com.github.fge.jsonschema.core.report.ProcessingMessage;
+import com.github.fge.jsonschema.core.report.ProcessingReport;
+import com.github.fge.jsonschema.main.JsonSchema;
+import com.github.fge.jsonschema.main.JsonSchemaFactory;
+import com.google.gson.JsonParser;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.stream.Collectors;
+import java.util.stream.StreamSupport;
+
+public class JSONValidator {
+
+    public void validate(String data, String jsonSchemaPath)
+        throws ValidationException, ProcessingException, IOException {
+        String jsonSchema = readJsonSchemaAsString(jsonSchemaPath);
+        JsonNode jsonData = JsonLoader.fromString(data);
+        ProcessingReport report = createJsonSchema(jsonSchema).validate(jsonData);
+
+        if (!report.isSuccess()) {
+            throw new ValidationException(constructValidationErrors(report));
+        }
+    }
+
+    private String readJsonSchemaAsString(String schemaPath) throws IOException {
+        try (FileReader reader = new FileReader(schemaPath)) {
+            return new JsonParser().parse(reader).toString();
+        }
+    }
+
+    private JsonSchema createJsonSchema(String schema) throws ProcessingException, IOException {
+        return JsonSchemaFactory.byDefault().getJsonSchema(JsonLoader.fromString(schema));
+    }
+
+    private String constructValidationErrors(ProcessingReport report) {
+        return StreamSupport.stream(report.spliterator(), false)
+            .filter(entry -> entry.getLogLevel() == LogLevel.ERROR)
+            .map(ProcessingMessage::getMessage)
+            .collect(Collectors.joining("\n"));
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/NoRopFilesException.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/NoRopFilesException.java
new file mode 100644
index 0000000..d3765a8
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/NoRopFilesException.java
@@ -0,0 +1,28 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.simulator.validation;
+
+public class NoRopFilesException extends Exception {
+
+    public NoRopFilesException(String message) {
+        super(message);
+    }
+}
diff --git a/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/ValidationException.java b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/ValidationException.java
new file mode 100644
index 0000000..a934917
--- /dev/null
+++ b/pnf-sim-lightweight/src/main/java/org/onap/pnfsimulator/simulator/validation/ValidationException.java
@@ -0,0 +1,28 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA 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.pnfsimulator.simulator.validation;
+
+public class ValidationException extends Exception {
+
+    public ValidationException(String message) {
+        super(message);
+    }
+}