Issue 94: Log test parameters at start of run (#96)

Logs the parameters being used by the test before it starts.

Signed-off-by: David Maddison <david.maddison@dell.com>

src/main/java/io/pravega/perf/PravegaPerfTest.java

@@ -22,6 +22,8 @@
 import org.apache.commons.cli.HelpFormatter;
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.IOException;
 import java.net.URI;
@@ -42,6 +44,7 @@
  * Data format is in comma separated format as following: {TimeStamp, Sensor Id, Location, TempValue }.
  */
 public class PravegaPerfTest {
+    private static Logger log = LoggerFactory.getLogger(PravegaPerfTest.class);
     final static String BENCHMARKNAME = "pravega-benchmark";
 
     public static void main(String[] args) {
@@ -392,6 +395,9 @@ static private class PravegaTest extends Test {
 
         PravegaTest(long startTime, CommandLine commandline) throws Exception {
             super(startTime, commandline);
+
+            log.info("Test Parameters: {}", toString());
+
             final ScheduledExecutorService bgExecutor = Executors.newScheduledThreadPool(10);
             final ControllerImpl controller = new ControllerImpl(ControllerImplConfig.builder()
                     .clientConfig(ClientConfig.builder().controllerURI(new URI(controllerUri)).build())
@@ -475,5 +481,33 @@ public void closeReaderGroup() {
             }
         }
 
+        @Override
+        public String toString() {
+            return "streamName='" + streamName + '\'' +
+                ", rdGrpName='" + rdGrpName + '\'' +
+                ", scopeName='" + scopeName + '\'' +
+                ", recreate=" + recreate +
+                ", writeAndRead=" + writeAndRead +
+                ", producerCount=" + producerCount +
+                ", consumerCount=" + consumerCount +
+                ", segmentCount=" + segmentCount +
+                ", segmentScaleKBps=" + segmentScaleKBps +
+                ", segmentScaleEventsPerSecond=" + segmentScaleEventsPerSecond +
+                ", scaleFactor=" + scaleFactor +
+                ", events=" + events +
+                ", eventsPerSec=" + eventsPerSec +
+                ", eventsPerProducer=" + eventsPerProducer +
+                ", eventsPerConsumer=" + eventsPerConsumer +
+                ", EventsPerFlush=" + EventsPerFlush +
+                ", transactionPerCommit=" + transactionPerCommit +
+                ", runtimeSec=" + runtimeSec +
+                ", throughput=" + throughput +
+                ", writeFile='" + writeFile + '\'' +
+                ", readFile='" + readFile + '\'' +
+                ", startTime=" + startTime +
+                ", enableConnectionPooling=" + enableConnectionPooling +
+                ", writeWatermarkPeriodMillis=" + writeWatermarkPeriodMillis +
+                ", readWatermarkPeriodMillis=" + readWatermarkPeriodMillis;
+        }
     }
 }