VES Collector - Event Ordering

https://jira.onap.org/browse/DCAEGEN2-1483

Change-Id: I28b0e871ce570a3cf4c0d2e08d040b66eb6db3aa
Issue-ID: DCAEGEN2-1483
Signed-off-by: Zlatko Murgoski <zlatko.murgoski@nokia.com>

10 files changed, 336 insertions, 340 deletions

diff --git a/src/main/java/org/onap/dcae/ApplicationSettings.java b/src/main/java/org/onap/dcae/ApplicationSettings.java
index 61bcf4b4..205659c4 100644
--- a/src/main/java/org/onap/dcae/ApplicationSettings.java
+++ b/src/main/java/org/onap/dcae/ApplicationSettings.java
@@ -84,38 +84,14 @@ public class ApplicationSettings {
             throw new ApplicationException(ex);
         }
     }
-    public void loadPropertiesFromFile() {
-        try {
-            properties.load(configurationFileLocation);
-        } catch (ConfigurationException ex) {
-            log.error("Cannot load properties cause:", ex);
-            throw new ApplicationException(ex);
-        }
-    }
-
     public Map<String, String> validAuthorizationCredentials() {
         return prepareUsersMap(properties.getString("header.authlist", null));
     }
 
-    private Map<String, String> prepareUsersMap(@Nullable String allowedUsers) {
-        return allowedUsers == null ? HashMap.empty()
-                : List.of(allowedUsers.split("\\|"))
-                .map(t->t.split(","))
-                .toMap(t-> t[0].trim(), t -> t[1].trim());
-    }
-
-    private String findOutConfigurationFileLocation(Map<String, String> parsedArgs) {
-        return prependWithUserDirOnRelative(parsedArgs.get("c").getOrElse("etc/collector.properties"));
-    }
-
     public Path configurationFileLocation() {
         return Paths.get(configurationFileLocation);
     }
 
-    public int maximumAllowedQueuedEvents() {
-        return properties.getInt("collector.inputQueue.maxPending", 1024 * 4);
-    }
-
     public boolean jsonSchemaValidationEnabled() {
         return properties.getInt("collector.schema.checkflag", -1) > 0;
     }
@@ -126,22 +102,8 @@ public class ApplicationSettings {
                 .getOrElseThrow(() -> new IllegalStateException("No fallback schema present in application."));
     }
 
-    private Map<String, JsonSchema> loadJsonSchemas() {
-        return jsonSchema().toMap().entrySet().stream()
-                .map(this::readSchemaForVersion)
-                .collect(HashMap.collector());
-    }
-
-    private Tuple2<String, JsonSchema> readSchemaForVersion(java.util.Map.Entry<String, Object> versionToFilePath) {
-        try {
-            String schemaContent = new String(
-                    readAllBytes(Paths.get(versionToFilePath.getValue().toString())));
-            JsonNode schemaNode = JsonLoader.fromString(schemaContent);
-            JsonSchema schema = JsonSchemaFactory.byDefault().getJsonSchema(schemaNode);
-            return Tuple(versionToFilePath.getKey(), schema);
-        } catch (IOException | ProcessingException e) {
-            throw new ApplicationException("Could not read schema from path: " + versionToFilePath.getValue(), e);
-        }
+    public boolean isVersionSupported(String version){
+       return loadedJsonSchemas.containsKey(version);
     }
 
     public int httpPort() {
@@ -183,6 +145,7 @@ public class ApplicationSettings {
     public String exceptionConfigFileLocation() {
         return properties.getString("exceptionConfig", null);
     }
+
     public String dMaaPConfigurationFileLocation() {
         return prependWithUserDirOnRelative(properties.getString("collector.dmaapfile", "etc/DmaapConfig.json"));
     }
@@ -204,7 +167,16 @@ public class ApplicationSettings {
         }
     }
 
-    public void addOrUpdate(String key, String value) {
+    private void loadPropertiesFromFile() {
+        try {
+            properties.load(configurationFileLocation);
+        } catch (ConfigurationException ex) {
+            log.error("Cannot load properties cause:", ex);
+            throw new ApplicationException(ex);
+        }
+    }
+
+    private void addOrUpdate(String key, String value) {
         if (properties.containsKey(key)) {
             properties.setProperty(key, value);
         } else {
@@ -212,6 +184,35 @@ public class ApplicationSettings {
         }
     }
 
+    private String findOutConfigurationFileLocation(Map<String, String> parsedArgs) {
+        return prependWithUserDirOnRelative(parsedArgs.get("c").getOrElse("etc/collector.properties"));
+    }
+
+    private Map<String, JsonSchema> loadJsonSchemas() {
+        return jsonSchema().toMap().entrySet().stream()
+            .map(this::readSchemaForVersion)
+            .collect(HashMap.collector());
+    }
+
+    private Tuple2<String, JsonSchema> readSchemaForVersion(java.util.Map.Entry<String, Object> versionToFilePath) {
+        try {
+            String schemaContent = new String(
+                readAllBytes(Paths.get(versionToFilePath.getValue().toString())));
+            JsonNode schemaNode = JsonLoader.fromString(schemaContent);
+            JsonSchema schema = JsonSchemaFactory.byDefault().getJsonSchema(schemaNode);
+            return Tuple(versionToFilePath.getKey(), schema);
+        } catch (IOException | ProcessingException e) {
+            throw new ApplicationException("Could not read schema from path: " + versionToFilePath.getValue(), e);
+        }
+    }
+
+    private Map<String, String> prepareUsersMap(@Nullable String allowedUsers) {
+        return allowedUsers == null ? HashMap.empty()
+            : List.of(allowedUsers.split("\\|"))
+                .map(t->t.split(","))
+                .toMap(t-> t[0].trim(), t -> t[1].trim());
+    }
+
     private JSONObject jsonSchema() {
         return new JSONObject(properties.getString("collector.schema.file",
                 format("{\"%s\":\"etc/CommonEventFormat_28.4.1.json\"}", FALLBACK_VES_VERSION)));
diff --git a/src/main/java/org/onap/dcae/VesApplication.java b/src/main/java/org/onap/dcae/VesApplication.java
index d658b4aa..e3340820 100644
--- a/src/main/java/org/onap/dcae/VesApplication.java
+++ b/src/main/java/org/onap/dcae/VesApplication.java
@@ -22,14 +22,9 @@ package org.onap.dcae;
 
 import io.vavr.collection.Map;
 import java.nio.file.Paths;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.LinkedBlockingQueue;
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
-import org.json.JSONObject;
-import org.onap.dcae.common.EventProcessor;
 import org.onap.dcae.common.EventSender;
 import org.onap.dcae.common.publishing.DMaaPConfigurationParser;
 import org.onap.dcae.common.publishing.EventPublisher;
@@ -49,21 +44,16 @@ import org.springframework.context.annotation.Lazy;
 @SpringBootApplication(exclude = {GsonAutoConfiguration.class, SecurityAutoConfiguration.class})
 public class VesApplication {
 
-    private static final Logger metriclog = LoggerFactory.getLogger("com.att.ecomp.metrics");
     private static final Logger incomingRequestsLogger = LoggerFactory.getLogger("org.onap.dcae.common.input");
     private static final Logger oplog = LoggerFactory.getLogger("org.onap.dcae.common.output");
     private static final Logger errorLog = LoggerFactory.getLogger("org.onap.dcae.common.error");
-    private static final int MAX_THREADS = 20;
-    public static LinkedBlockingQueue<JSONObject> fProcessingInputQueue;
     private static ApplicationSettings properties;
     private static ConfigurableApplicationContext context;
     private static ConfigLoader configLoader;
-    private static EventProcessor eventProcessor;
     private static ScheduledThreadPoolExecutor scheduledThreadPoolExecutor;
     private static SpringApplication app;
     private static EventPublisher eventPublisher;
     private static ScheduledFuture<?> scheduleFeatures;
-    private static ExecutorService executor;
 
     public static void main(String[] args) {
       app = new SpringApplication(VesApplication.class);
@@ -73,7 +63,6 @@ public class VesApplication {
       app.setAddCommandLineProperties(true);
       context = app.run();
       configLoader.updateConfig();
-
     }
 
     public static void restartApplication() {
@@ -89,7 +78,6 @@ public class VesApplication {
     }
 
     private static void init() {
-      fProcessingInputQueue = new LinkedBlockingQueue<>(properties.maximumAllowedQueuedEvents());
       createConfigLoader();
       createSchedulePoolExecutor();
       createExecutors();
@@ -97,12 +85,6 @@ public class VesApplication {
 
     private static void createExecutors() {
       eventPublisher = EventPublisher.createPublisher(oplog, getDmapConfig());
-      eventProcessor = new EventProcessor(new EventSender(eventPublisher, properties));
-
-      executor = Executors.newFixedThreadPool(MAX_THREADS);
-      for (int i = 0; i < MAX_THREADS; ++i) {
-        executor.execute(eventProcessor);
-      }
     }
 
     private static void createSchedulePoolExecutor() {
@@ -142,20 +124,15 @@ public class VesApplication {
     }
 
     @Bean
-    @Qualifier("metricsLog")
-    public Logger incomingRequestsMetricsLogger() {
-        return metriclog;
-    }
-
-    @Bean
     @Qualifier("errorLog")
     public Logger errorLogger() {
         return errorLog;
     }
 
     @Bean
-    public LinkedBlockingQueue<JSONObject> inputQueue() {
-        return fProcessingInputQueue;
+    @Qualifier("eventSender")
+    public EventSender eventSender() {
+        return new EventSender(eventPublisher,properties);
     }
 
 }
diff --git a/src/main/java/org/onap/dcae/common/EventProcessor.java b/src/main/java/org/onap/dcae/common/EventProcessor.java
deleted file mode 100644
index bf3bf70d..00000000
--- a/src/main/java/org/onap/dcae/common/EventProcessor.java
+++ /dev/null
@@ -1,61 +0,0 @@
-/*-

- * ============LICENSE_START=======================================================

- * PROJECT

- * ================================================================================

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

- * ================================================================================

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *      http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- * ============LICENSE_END=========================================================

- */

-

-package org.onap.dcae.common;

-

-import com.att.nsa.clock.SaClock;

-import com.att.nsa.logging.LoggingContext;

-import com.att.nsa.logging.log4j.EcompFields;

-import org.json.JSONObject;

-import org.onap.dcae.VesApplication;

-import org.slf4j.Logger;

-import org.slf4j.LoggerFactory;

-

-public class EventProcessor implements Runnable {

-

-    private static final Logger log = LoggerFactory.getLogger(EventProcessor.class);

-    private EventSender eventSender;

-

-    public EventProcessor(EventSender eventSender) {

-        this.eventSender = eventSender;

-    }

-

-    @Override

-    public void run() {

-        try {

-          while (true){

-            JSONObject event = VesApplication.fProcessingInputQueue.take();

-            log.info("QueueSize:" + VesApplication.fProcessingInputQueue.size() + "\tEventProcessor\tRemoving element: " + event);

-            setLoggingContext(event);

-            log.debug("event.VESuniqueId" + event.get("VESuniqueId") + "event.commonEventHeader.domain:" + eventSender.getDomain(event));

-            eventSender.send(event);

-            log.debug("Message published" + event);

-          }

-        } catch (InterruptedException e) {

-            log.error("EventProcessor InterruptedException" + e.getMessage());

-            Thread.currentThread().interrupt();

-        }

-    }

-

-  private void setLoggingContext(JSONObject event) {

-        LoggingContext localLC = VESLogger.getLoggingContextForThread(event.get("VESuniqueId").toString());

-        localLC.put(EcompFields.kBeginTimestampMs, SaClock.now());

-    }

-}
\ No newline at end of file
diff --git a/src/main/java/org/onap/dcae/common/EventSender.java b/src/main/java/org/onap/dcae/common/EventSender.java
index 48268d6c..c1002af6 100644
--- a/src/main/java/org/onap/dcae/common/EventSender.java
+++ b/src/main/java/org/onap/dcae/common/EventSender.java
@@ -20,17 +20,12 @@
  */
 package org.onap.dcae.common;
 
-import com.google.common.reflect.TypeToken;
-import com.google.gson.Gson;
+import com.att.nsa.clock.SaClock;
+import com.att.nsa.logging.LoggingContext;
+import com.att.nsa.logging.log4j.EcompFields;
 import io.vavr.collection.Map;
-import java.io.FileReader;
-import java.io.IOException;
-import java.lang.reflect.Type;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.List;
+import org.json.JSONArray;
 import org.json.JSONObject;
-import org.onap.dcae.ApplicationException;
 import org.onap.dcae.ApplicationSettings;
 import org.onap.dcae.common.publishing.EventPublisher;
 import org.slf4j.Logger;
@@ -38,88 +33,47 @@ import org.slf4j.LoggerFactory;
 
 public class EventSender {
 
-  private static final String COULD_NOT_FIND_FILE = "Couldn't find file ./etc/eventTransform.json";
+  private static final Logger metriclog = LoggerFactory.getLogger("com.att.ecomp.metrics");
   private Map<String, String[]> streamidHash;
-  private ApplicationSettings properties;
   private EventPublisher eventPublisher;
-
-  private static final Type EVENT_LIST_TYPE = new TypeToken<List<Event>>() {}.getType();
+  private static final String VES_UNIQUE_ID = "VESuniqueId";
   private static final Logger log = LoggerFactory.getLogger(EventSender.class);
   private static final String EVENT_LITERAL = "event";
   private static final String COMMON_EVENT_HEADER = "commonEventHeader";
-  private final SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, MM dd yyyy hh:mm:ss z");
 
   public EventSender( EventPublisher eventPublisher, ApplicationSettings properties) {
     this.eventPublisher = eventPublisher;
     this.streamidHash = properties.dMaaPStreamsMapping();
-    this.properties = properties;
-
   }
 
-  public void send(JSONObject event) {
-    streamidHash.get(getDomain(event))
-        .onEmpty(() -> log.error("No StreamID defined for publish - Message dropped" + event))
-        .forEach(streamIds -> sendEventsToStreams(event, streamIds));
+  public void send(JSONArray arrayOfEvents) {
+    for (int i = 0; i < arrayOfEvents.length(); i++) {
+      metriclog.info("EVENT_PUBLISH_START");
+      JSONObject object = (JSONObject) arrayOfEvents.get(i);
+      setLoggingContext(object);
+      streamidHash.get(getDomain(object))
+          .onEmpty(() -> log.error("No StreamID defined for publish - Message dropped" + object))
+          .forEach(streamIds -> sendEventsToStreams(object, streamIds));
+      log.debug("Message published" + object);
+    }
+    log.debug("CommonStartup.handleEvents:EVENTS has been published successfully!");
+    metriclog.info("EVENT_PUBLISH_END");
   }
 
-  public static String getDomain(JSONObject event) {
+  private static String getDomain(JSONObject event) {
     return event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER).getString("domain");
   }
 
   private void sendEventsToStreams(JSONObject event, String[] streamIdList) {
     for (String aStreamIdList : streamIdList) {
       log.info("Invoking publisher for streamId:" + aStreamIdList);
-      eventPublisher.sendEvent(overrideEvent(event), aStreamIdList);
+      eventPublisher.sendEvent(event, aStreamIdList);
     }
   }
 
-  private JSONObject overrideEvent(JSONObject event) {
-    JSONObject jsonObject = addCurrentTimeToEvent(event);
-    if (properties.eventTransformingEnabled()) {
-      try (FileReader fr = new FileReader("./etc/eventTransform.json")) {
-        log.info("parse eventTransform.json");
-        List<Event> events = new Gson().fromJson(fr, EVENT_LIST_TYPE);
-        parseEventsJson(events, new ConfigProcessorAdapter(new ConfigProcessors(jsonObject)));
-      } catch (IOException e) {
-        log.error(COULD_NOT_FIND_FILE, e);
-        throw new ApplicationException(COULD_NOT_FIND_FILE, e);
-      }
-    }
-    if (jsonObject.has("VESversion"))
-      jsonObject.remove("VESversion");
-
-    log.debug("Modified event:" + jsonObject);
-    return jsonObject;
-  }
-
-  private JSONObject addCurrentTimeToEvent(JSONObject event) {
-    final Date currentTime = new Date();
-    JSONObject collectorTimeStamp = new JSONObject().put("collectorTimeStamp", dateFormat.format(currentTime));
-    JSONObject commonEventHeaderkey = event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER);
-    commonEventHeaderkey.put("internalHeaderFields", collectorTimeStamp);
-    event.getJSONObject(EVENT_LITERAL).put(COMMON_EVENT_HEADER, commonEventHeaderkey);
-    return event;
-  }
-
-  private void parseEventsJson(List<Event> eventsTransform, ConfigProcessorAdapter configProcessorAdapter) {
-    for (Event eventTransform : eventsTransform) {
-      JSONObject filterObj = new JSONObject(eventTransform.filter.toString());
-      if (configProcessorAdapter.isFilterMet(filterObj)) {
-        callProcessorsMethod(configProcessorAdapter, eventTransform.processors);
-      }
-    }
-  }
-
-  private void callProcessorsMethod(ConfigProcessorAdapter configProcessorAdapter, List<Processor> processors) {
-    for (Processor processor : processors) {
-      final String functionName = processor.functionName;
-      final JSONObject args = new JSONObject(processor.args.toString());
-      log.info(String.format("functionName==%s | args==%s", functionName, args));
-      try {
-        configProcessorAdapter.runConfigProcessorFunctionByName(functionName, args);
-      } catch (ReflectiveOperationException e) {
-        log.error("EventProcessor Exception" + e.getMessage() + e + e.getCause());
-      }
-    }
+  private void setLoggingContext(JSONObject event) {
+    LoggingContext localLC = VESLogger.getLoggingContextForThread(event.get(VES_UNIQUE_ID).toString());
+    localLC.put(EcompFields.kBeginTimestampMs, SaClock.now());
+    log.debug("event.VESuniqueId" + event.get(VES_UNIQUE_ID) + "event.commonEventHeader.domain:" + getDomain(event));
   }
 }
diff --git a/src/main/java/org/onap/dcae/common/EventUpdater.java b/src/main/java/org/onap/dcae/common/EventUpdater.java
new file mode 100644
index 00000000..1caa4f18
--- /dev/null
+++ b/src/main/java/org/onap/dcae/common/EventUpdater.java
@@ -0,0 +1,137 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2019 Nokia. All rights reserved.s
+ * ================================================================================
+ * 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.dcae.common;
+
+import com.google.common.reflect.TypeToken;
+import com.google.gson.Gson;
+import java.io.FileReader;
+import java.io.IOException;
+import java.lang.reflect.Type;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.List;
+import java.util.UUID;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.onap.dcae.ApplicationException;
+import org.onap.dcae.ApplicationSettings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class EventUpdater {
+
+  private static final String EVENT_LIST = "eventList";
+  private static final String EVENT = "event";
+  private static final String VES_UNIQUE_ID = "VESuniqueId";
+  private static final String VES_VERSION = "VESversion";
+  private static final String COULD_NOT_FIND_FILE = "Couldn't find file ./etc/eventTransform.json";
+  private static final Type EVENT_LIST_TYPE = new TypeToken<List<Event>>() {}.getType();
+  private static final Logger log = LoggerFactory.getLogger(EventSender.class);
+  private static final String EVENT_LITERAL = "event";
+  private static final String COMMON_EVENT_HEADER = "commonEventHeader";
+  private static final String EVENT_TRANSFORM = "./etc/eventTransform.json";
+  private ApplicationSettings settings;
+  private final SimpleDateFormat dateFormat = new SimpleDateFormat("EEE, MM dd yyyy hh:mm:ss z");
+
+  public EventUpdater(ApplicationSettings settings) {
+    this.settings = settings;
+  }
+
+  public JSONArray convert(JSONObject jsonObject, String version, UUID uuid, String type){
+    if(type.equalsIgnoreCase(EVENT_LIST)){
+      return convertEvents(jsonObject, uuid.toString(), version);
+    }
+    else {
+      return convertEvent(jsonObject, uuid.toString(), version);
+    }
+  }
+
+  private JSONArray convertEvents(JSONObject jsonObject,
+      String uuid, String version) {
+    JSONArray asArrayEvents = new JSONArray();
+
+    JSONArray events = jsonObject.getJSONArray(EVENT_LIST);
+    for (int i = 0; i < events.length(); i++) {
+      JSONObject event = new JSONObject().put(EVENT, events.getJSONObject(i));
+      event.put(VES_UNIQUE_ID, uuid + "-" + i);
+      event.put(VES_VERSION, version);
+      asArrayEvents.put(overrideEvent(event));
+    }
+    return asArrayEvents;
+  }
+
+  private JSONArray convertEvent(JSONObject jsonObject, String uuid, String version) {
+    jsonObject.put(VES_UNIQUE_ID, uuid);
+    jsonObject.put(VES_VERSION, version);
+    return new JSONArray().put(overrideEvent(jsonObject));
+  }
+
+  private JSONObject overrideEvent(JSONObject event) {
+    JSONObject jsonObject = addCurrentTimeToEvent(event);
+    if (settings.eventTransformingEnabled()) {
+      try (FileReader fr = new FileReader(EVENT_TRANSFORM)) {
+        log.info("parse " + EVENT_TRANSFORM + " file");
+        List<Event> events = new Gson().fromJson(fr, EVENT_LIST_TYPE);
+        parseEventsJson(events, new ConfigProcessorAdapter(new ConfigProcessors(jsonObject)));
+      } catch (IOException e) {
+        log.error(COULD_NOT_FIND_FILE, e);
+        throw new ApplicationException(COULD_NOT_FIND_FILE, e);
+      }
+    }
+    if (jsonObject.has(VES_VERSION))
+       jsonObject.remove(VES_VERSION);
+    log.debug("Modified event:" + jsonObject);
+    return jsonObject;
+  }
+
+  private JSONObject addCurrentTimeToEvent(JSONObject event) {
+    final Date currentTime = new Date();
+    JSONObject collectorTimeStamp = new JSONObject().put("collectorTimeStamp", dateFormat.format(currentTime));
+    JSONObject commonEventHeaderkey = event.getJSONObject(EVENT_LITERAL).getJSONObject(COMMON_EVENT_HEADER);
+    commonEventHeaderkey.put("internalHeaderFields", collectorTimeStamp);
+    event.getJSONObject(EVENT_LITERAL).put(COMMON_EVENT_HEADER, commonEventHeaderkey);
+    return event;
+  }
+
+  private void parseEventsJson(List<Event> eventsTransform, ConfigProcessorAdapter configProcessorAdapter) {
+    for (Event eventTransform : eventsTransform) {
+      JSONObject filterObj = new JSONObject(eventTransform.filter.toString());
+      if (configProcessorAdapter.isFilterMet(filterObj)) {
+        callProcessorsMethod(configProcessorAdapter, eventTransform.processors);
+      }
+    }
+  }
+
+  private void callProcessorsMethod(ConfigProcessorAdapter configProcessorAdapter, List<Processor> processors) {
+    for (Processor processor : processors) {
+      //TODO try to remove refection
+      final String functionName = processor.functionName;
+      final JSONObject args = new JSONObject(processor.args.toString());
+      log.info(String.format("functionName==%s | args==%s", functionName, args));
+      try {
+        configProcessorAdapter.runConfigProcessorFunctionByName(functionName, args);
+      } catch (ReflectiveOperationException e) {
+        log.error("EventProcessor Exception" + e.getMessage() + e + e.getCause());
+      }
+    }
+  }
+}
diff --git a/src/main/java/org/onap/dcae/restapi/EventValidator.java b/src/main/java/org/onap/dcae/restapi/EventValidator.java
new file mode 100644
index 00000000..f119b507
--- /dev/null
+++ b/src/main/java/org/onap/dcae/restapi/EventValidator.java
@@ -0,0 +1,78 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2019 Nokia. All rights reserved.s
+ * ================================================================================
+ * 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.dcae.restapi;
+
+import static java.util.stream.StreamSupport.stream;
+
+import com.github.fge.jackson.JsonLoader;
+import com.github.fge.jsonschema.core.report.ProcessingReport;
+import com.github.fge.jsonschema.main.JsonSchema;
+import java.util.Optional;
+import org.json.JSONObject;
+import org.onap.dcae.ApplicationException;
+import org.onap.dcae.ApplicationSettings;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.ResponseEntity;
+
+public class EventValidator {
+
+  private static final Logger log = LoggerFactory.getLogger(EventValidator.class);
+
+  private ApplicationSettings applicationSettings;
+
+  public EventValidator(ApplicationSettings applicationSettings) {
+    this.applicationSettings = applicationSettings;
+  }
+
+  public Optional<ResponseEntity<String>> validate(JSONObject jsonObject, String type, String version){
+    if (applicationSettings.jsonSchemaValidationEnabled()) {
+      if (jsonObject.has(type)) {
+        if (!conformsToSchema(jsonObject, version)) {
+          return errorResponse(ApiException.SCHEMA_VALIDATION_FAILED);
+        }
+      } else {
+        return errorResponse(ApiException.INVALID_JSON_INPUT);
+      }
+    }
+    return Optional.empty();
+  }
+
+  private boolean conformsToSchema(JSONObject payload, String version) {
+    try {
+      JsonSchema schema = applicationSettings.jsonSchema(version);
+      ProcessingReport report = schema.validate(JsonLoader.fromString(payload.toString()));
+      if (report.isSuccess()) {
+        return true;
+      }
+      log.warn("Schema validation failed for event: " + payload);
+      stream(report.spliterator(), false).forEach(e -> log.warn(e.getMessage()));
+      return false;
+    } catch (Exception e) {
+      throw new ApplicationException("Unable to validate against schema", e);
+    }
+  }
+
+  private Optional<ResponseEntity<String>> errorResponse(ApiException noServerResources) {
+    return Optional.of(ResponseEntity.status(noServerResources.httpStatusCode)
+        .body(noServerResources.toJSON().toString()));
+  }
+}
diff --git a/src/main/java/org/onap/dcae/restapi/HealthCheckController.java b/src/main/java/org/onap/dcae/restapi/HealthCheckController.java
index 9c65619c..77c6802a 100644
--- a/src/main/java/org/onap/dcae/restapi/HealthCheckController.java
+++ b/src/main/java/org/onap/dcae/restapi/HealthCheckController.java
@@ -21,16 +21,20 @@
 
 package org.onap.dcae.restapi;
 
-import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
 
-
-@Controller
+@RestController
 public class HealthCheckController {
 
+    @GetMapping("/")
+    public String main() {
+        return "Welcome to VESCollector";
+    }
+
     @GetMapping("/healthcheck")
     public String healthCheck() {
-        return "hello";
+        return "I'm good";
     }
 
 }
diff --git a/src/main/java/org/onap/dcae/restapi/SwaggerConfig.java b/src/main/java/org/onap/dcae/restapi/SwaggerConfig.java
index 60740a80..267db054 100644
--- a/src/main/java/org/onap/dcae/restapi/SwaggerConfig.java
+++ b/src/main/java/org/onap/dcae/restapi/SwaggerConfig.java
@@ -31,6 +31,7 @@ import springfox.documentation.swagger2.annotations.EnableSwagger2;
 @Configuration
 @EnableSwagger2
 public class SwaggerConfig{
+
   @Bean
   public Docket api() {
     return new Docket(DocumentationType.SWAGGER_2)
@@ -39,5 +40,4 @@ public class SwaggerConfig{
         .paths(PathSelectors.any())
         .build();
   }
-
 }
diff --git a/src/main/java/org/onap/dcae/restapi/VesRestController.java b/src/main/java/org/onap/dcae/restapi/VesRestController.java
index 3102c31c..b18eb7bc 100644
--- a/src/main/java/org/onap/dcae/restapi/VesRestController.java
+++ b/src/main/java/org/onap/dcae/restapi/VesRestController.java
@@ -21,32 +21,27 @@
 
 package org.onap.dcae.restapi;
 
-import static java.util.stream.StreamSupport.stream;
 import static org.springframework.http.ResponseEntity.accepted;
+import static org.springframework.http.ResponseEntity.badRequest;
 
 import com.att.nsa.clock.SaClock;
 import com.att.nsa.logging.LoggingContext;
 import com.att.nsa.logging.log4j.EcompFields;
-import com.github.fge.jackson.JsonLoader;
-import com.github.fge.jsonschema.core.report.ProcessingReport;
-import com.github.fge.jsonschema.main.JsonSchema;
-
+import java.util.Optional;
 import java.util.UUID;
-import java.util.concurrent.LinkedBlockingQueue;
 import javax.servlet.http.HttpServletRequest;
-
 import org.json.JSONArray;
 import org.json.JSONObject;
-import org.onap.dcae.ApplicationException;
 import org.onap.dcae.ApplicationSettings;
+import org.onap.dcae.common.EventSender;
 import org.onap.dcae.common.VESLogger;
+import org.onap.dcae.common.EventUpdater;
 import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
@@ -54,152 +49,64 @@ import org.springframework.web.bind.annotation.RestController;
 @RestController
 public class VesRestController {
 
-    private static final Logger log = LoggerFactory.getLogger(VesRestController.class);
-    private static final String INVALID_JSON = ApiException.INVALID_JSON_INPUT.toJSON().toString();
-    private final ApplicationSettings applicationSettings;
-    private final LinkedBlockingQueue<JSONObject> inputQueue;
-    private final Logger metricsLog;
-    private final Logger errorLog;
-    private final Logger incomingRequestsLogger;
+    private static final String VES_EVENT_MESSAGE = "Received a VESEvent '%s', marked with unique identifier '%s', on api version '%s', from host: '%s'";
+    private static final String EVENT_LIST = "eventList";
+    private static final String EVENT = "event";
+    private final ApplicationSettings settings;
+    private final Logger requestLogger;
+    private EventSender eventSender;
 
     @Autowired
-    VesRestController(ApplicationSettings applicationSettings,
-                      @Qualifier("metricsLog") Logger metricsLog,
-                      @Qualifier("errorLog") Logger errorLog,
+    VesRestController(ApplicationSettings settings,
                       @Qualifier("incomingRequestsLogger") Logger incomingRequestsLogger,
-                      @Qualifier("inputQueue") LinkedBlockingQueue<JSONObject> inputQueue) {
-        this.applicationSettings = applicationSettings;
-        this.metricsLog = metricsLog;
-        this.errorLog = errorLog;
-        this.incomingRequestsLogger = incomingRequestsLogger;
-        this.inputQueue = inputQueue;
-    }
-
-    @GetMapping("/")
-    String mainPage() {
-        return "Welcome to VESCollector";
+                      @Qualifier("eventSender") EventSender eventSender) {
+        this.settings = settings;
+        this.requestLogger = incomingRequestsLogger;
+        this.eventSender = eventSender;
     }
 
-    //refactor in next iteration
-    @PostMapping(value = {"/eventListener/v1",
-            "/eventListener/v1/eventBatch",
-            "/eventListener/v2",
-            "/eventListener/v2/eventBatch",
-            "/eventListener/v3",
-            "/eventListener/v3/eventBatch",
-            "/eventListener/v4",
-            "/eventListener/v4/eventBatch",
-            "/eventListener/v5",
-            "/eventListener/v5/eventBatch",
-            "/eventListener/v7",
-            "/eventListener/v7/eventBatch"}, consumes = "application/json")
-    ResponseEntity<String> receiveEvent(@RequestBody String jsonPayload, HttpServletRequest httpServletRequest) {
-        String request = httpServletRequest.getRequestURI();
-        String version = extractVersion(request);
-
-        JSONObject jsonObject;
-        try {
-            jsonObject = new JSONObject(jsonPayload);
-        } catch (Exception e) {
-            log.error(INVALID_JSON);
-            return ResponseEntity.badRequest().body(INVALID_JSON);
-        }
-
-        String uuid = setUpECOMPLoggingForRequest();
-        incomingRequestsLogger.info(String.format(
-                "Received a VESEvent '%s', marked with unique identifier '%s', on api version '%s', from host: '%s'",
-                jsonObject, uuid, version, httpServletRequest.getRemoteHost()));
-
-        if (applicationSettings.jsonSchemaValidationEnabled()) {
-            if (isBatchRequest(request) && (jsonObject.has("eventList") && (!jsonObject.has("event")))) {
-                if (!conformsToSchema(jsonObject, version)) {
-                    return errorResponse(ApiException.SCHEMA_VALIDATION_FAILED);
-                }
-            } else if (!isBatchRequest(request) && (!jsonObject.has("eventList") && (jsonObject.has("event")))) {
-                if (!conformsToSchema(jsonObject, version)) {
-                    return errorResponse(ApiException.SCHEMA_VALIDATION_FAILED);
-                }
-            } else {
-                return errorResponse(ApiException.INVALID_JSON_INPUT);
-            }
+    @PostMapping(value = {"/eventListener/{version}"}, consumes = "application/json")
+    ResponseEntity<String> event(@RequestBody String event, @PathVariable String version, HttpServletRequest request) {
+        if (settings.isVersionSupported(version)) {
+            return process(event, version, request, EVENT);
         }
+        return badRequest().contentType(MediaType.APPLICATION_JSON).body(String.format("API version %s is not supported", version));
+    }
 
-        JSONArray commonlyFormatted = convertToJSONArrayCommonFormat(jsonObject, request, uuid, version);
 
-        if (!putEventsOnProcessingQueue(commonlyFormatted)) {
-            errorLog.error("EVENT_RECEIPT_FAILURE: QueueFull " + ApiException.NO_SERVER_RESOURCES);
-            return errorResponse(ApiException.NO_SERVER_RESOURCES);
+    @PostMapping(value = {"/eventListener/{version}/eventBatch"}, consumes = "application/json")
+    ResponseEntity<String> events(@RequestBody String events, @PathVariable String version, HttpServletRequest request) {
+        if (settings.isVersionSupported(version)) {
+            return process(events, version, request, EVENT_LIST);
         }
-        return accepted()
-                .contentType(MediaType.APPLICATION_JSON)
-                .body("Accepted");
+        return badRequest().contentType(MediaType.APPLICATION_JSON).body(String.format("API version %s is not supported", version));
     }
 
-    private String extractVersion(String httpServletRequest) {
-        return httpServletRequest.split("/")[2];
-    }
+    private ResponseEntity<String> process(String events, String version, HttpServletRequest request, String type) {
 
-    private ResponseEntity<String> errorResponse(ApiException noServerResources) {
-        return ResponseEntity.status(noServerResources.httpStatusCode)
-                .body(noServerResources.toJSON().toString());
-    }
+        JSONObject jsonObject = new JSONObject(events);
 
-    private boolean putEventsOnProcessingQueue(JSONArray arrayOfEvents) {
-        for (int i = 0; i < arrayOfEvents.length(); i++) {
-            metricsLog.info("EVENT_PUBLISH_START");
-            if (!inputQueue.offer((JSONObject) arrayOfEvents.get(i))) {
-                return false;
-            }
-        }
-        log.debug("CommonStartup.handleEvents:EVENTS has been published successfully!");
-        metricsLog.info("EVENT_PUBLISH_END");
-        return true;
-    }
+        EventValidator eventValidator = new EventValidator(settings);
+        Optional<ResponseEntity<String>> validationResult = eventValidator.validate(jsonObject, type, version);
 
-    private boolean conformsToSchema(JSONObject payload, String version) {
-        try {
-            JsonSchema schema = applicationSettings.jsonSchema(version);
-            ProcessingReport report = schema.validate(JsonLoader.fromString(payload.toString()));
-            if (!report.isSuccess()) {
-                log.warn("Schema validation failed for event: " + payload);
-                stream(report.spliterator(), false).forEach(e -> log.warn(e.getMessage()));
-                return false;
-            }
-            return report.isSuccess();
-        } catch (Exception e) {
-            throw new ApplicationException("Unable to validate against schema", e);
+        if (validationResult.isPresent()){
+            return validationResult.get();
         }
+        JSONArray arrayOfEvents = new EventUpdater(settings).convert(jsonObject,version, generateUUID(version, request.getRequestURI(), jsonObject), type);
+        eventSender.send(arrayOfEvents);
+        // TODO call service and return status, replace CambriaClient, split event to single object and list of them
+        return accepted().contentType(MediaType.APPLICATION_JSON).body("Accepted");
     }
 
-    private static JSONArray convertToJSONArrayCommonFormat(JSONObject jsonObject, String request,
-                                                            String uuid, String version) {
-        JSONArray asArrayEvents = new JSONArray();
-        String vesUniqueIdKey = "VESuniqueId";
-        String vesVersionKey = "VESversion";
-        if (isBatchRequest(request)) {
-            JSONArray events = jsonObject.getJSONArray("eventList");
-            for (int i = 0; i < events.length(); i++) {
-                JSONObject event = new JSONObject().put("event", events.getJSONObject(i));
-                event.put(vesUniqueIdKey, uuid + "-" + i);
-                event.put(vesVersionKey, version);
-                asArrayEvents.put(event);
-            }
-        } else {
-            jsonObject.put(vesUniqueIdKey, uuid);
-            jsonObject.put(vesVersionKey, version);
-            asArrayEvents = new JSONArray().put(jsonObject);
-        }
-        return asArrayEvents;
+    private UUID generateUUID(String version, String uri, JSONObject jsonObject) {
+        UUID uuid = UUID.randomUUID();
+        setUpECOMPLoggingForRequest(uuid);
+        requestLogger.info(String.format(VES_EVENT_MESSAGE, jsonObject, uuid, version, uri));
+        return uuid;
     }
 
-    private static String setUpECOMPLoggingForRequest() {
-        final UUID uuid = UUID.randomUUID();
+    private static void setUpECOMPLoggingForRequest(UUID uuid) {
         LoggingContext localLC = VESLogger.getLoggingContextForThread(uuid);
         localLC.put(EcompFields.kBeginTimestampMs, SaClock.now());
-        return uuid.toString();
-    }
-
-    private static boolean isBatchRequest(String request) {
-        return request.contains("eventBatch");
     }
 }
\ No newline at end of file
diff --git a/src/main/java/org/onap/dcae/restapi/WebMvcConfig.java b/src/main/java/org/onap/dcae/restapi/WebMvcConfig.java
index 7059c4e5..c3e2a5de 100644
--- a/src/main/java/org/onap/dcae/restapi/WebMvcConfig.java
+++ b/src/main/java/org/onap/dcae/restapi/WebMvcConfig.java
@@ -52,5 +52,4 @@ public class WebMvcConfig extends WebMvcConfigurationSupport {
         resolver.setSuffix(".html");
         return resolver;
     }
-
 }