Update pravega version and enable connection pooling

driver-pravega/build.gradle

@@ -9,5 +9,5 @@ repositories {
 
 dependencies {
     api project(":sbk-api")
-    api "io.pravega:pravega-client:0.10.0"
+    api "io.pravega:pravega-client:0.12.0"
 }

driver-pravega/src/main/java/io/sbk/Pravega/Pravega.java

@@ -61,6 +61,7 @@ public void addArgs(final InputOptions params) throws IllegalArgumentException {
         params.addOption("segments", true, "Number of segments, default :" + config.segmentCount);
         params.addOption("recreate", true,
                 "If the stream is already existing, delete and recreate the same, default :" + config.recreate);
+        params.addOption("connpool", true, "Enable Connection pooling, default :" + config.connPooling);
     }
 
     @Override
@@ -74,6 +75,8 @@ public void parseArgs(final ParameterOptions params) throws IllegalArgumentExcep
         } else {
             config.recreate = params.getWritersCount() > 0 && params.getReadersCount() > 0;
         }
+        config.connPooling = Boolean.parseBoolean(params.getOptionValue("connpool",
+                Boolean.toString(config.connPooling)));
 
         if (config.recreate) {
             rdGrpName = config.streamName + System.currentTimeMillis();
@@ -127,7 +130,7 @@ public void closeStorage(final ParameterOptions params) throws IOException {
     @Override
     public DataWriter<byte[]> createWriter(final int id, final ParameterOptions params) {
         try {
-            return new PravegaWriter(id, params, config.streamName, factory);
+            return new PravegaWriter(id, params, config.streamName, factory, config.connPooling);
         } catch (IOException ex) {
             ex.printStackTrace();
             return null;

driver-pravega/src/main/java/io/sbk/Pravega/PravegaConfig.java

@@ -16,4 +16,5 @@ public class PravegaConfig {
     public String streamName;
     public int segmentCount;
     public boolean recreate;
+    public boolean connPooling;
 }

driver-pravega/src/main/java/io/sbk/Pravega/PravegaWriter.java

@@ -29,10 +29,13 @@
 public class PravegaWriter implements Writer<byte[]> {
     final EventStreamWriter<byte[]> producer;
 
-    public PravegaWriter(int id, ParameterOptions params, String streamName, EventStreamClientFactory factory) throws IOException {
+    public PravegaWriter(int id, ParameterOptions params, String streamName, EventStreamClientFactory factory,
+                         boolean connectionPooling) throws IOException {
         this.producer = factory.createEventWriter(streamName,
                 new ByteArraySerializer(),
-                EventWriterConfig.builder().build());
+                EventWriterConfig.builder()
+                        .enableConnectionPooling(connectionPooling)
+                        .build());
     }
 
     /**

driver-pravega/src/main/resources/pravega.properties

@@ -20,4 +20,7 @@ segmentCount=1
 
 # Create the topic
 # if the writers and readers are supplied then it is set to true
-recreate=false
+recreate=false
+
+#Disable Connection Pooling by default
+connPooling=false