New enableBatch method

Author: csokol

src/main/java/org/influxdb/InfluxDB.java

@@ -101,6 +101,15 @@ public String value() {
    */
   public InfluxDB enableBatch(final int actions, final int flushDuration, final TimeUnit flushDurationTimeUnit);
 
+  /**
+   * Enable batching of single Point writes as {@link #enableBatch(int, int, TimeUnit, ThreadFactory, Consumer<Throwable>)}
+   * using with a exceptionHandler that does nothing.
+   *
+   * @see #enableBatch(int, int, TimeUnit, ThreadFactory, Consumer<Throwable>)
+   */
+  public InfluxDB enableBatch(final int actions, final int flushDuration, final TimeUnit flushDurationTimeUnit,
+                              final ThreadFactory threadFactory);
+
   /**
    * Enable batching of single Point writes to speed up writes significant. If either actions or
    * flushDurations is reached first, a batch write is issued.
@@ -113,10 +122,12 @@ public String value() {
    *            the time to wait at most.
    * @param flushDurationTimeUnit
    * @param threadFactory
+   * @param exceptionHandler
+   *            a consumer function to handle asynchronous errors
    * @return the InfluxDB instance to be able to use it in a fluent manner.
    */
   public InfluxDB enableBatch(final int actions, final int flushDuration, final TimeUnit flushDurationTimeUnit,
-                              final ThreadFactory threadFactory);
+                              final ThreadFactory threadFactory, final Consumer<Throwable> exceptionHandler);
 
   /**
    * Disable Batching.

src/main/java/org/influxdb/impl/InfluxDBImpl.java

@@ -160,15 +160,21 @@ public InfluxDB enableBatch(final int actions, final int flushDuration,
   @Override
   public InfluxDB enableBatch(final int actions, final int flushDuration,
                               final TimeUnit flushDurationTimeUnit, final ThreadFactory threadFactory) {
+    enableBatch(actions, flushDuration, flushDurationTimeUnit, threadFactory, (throwable) -> { });
+    return this;
+  }
+
+  @Override
+  public InfluxDB enableBatch(int actions, int flushDuration, TimeUnit flushDurationTimeUnit, ThreadFactory threadFactory, Consumer<Throwable> exceptionHandler) {
     if (this.batchEnabled.get()) {
       throw new IllegalStateException("BatchProcessing is already enabled.");
     }
     this.batchProcessor = BatchProcessor
-        .builder(this)
-        .actions(actions)
-        .interval(flushDuration, flushDurationTimeUnit)
-        .threadFactory(threadFactory)
-        .build();
+            .builder(this)
+            .actions(actions)
+            .interval(flushDuration, flushDurationTimeUnit)
+            .threadFactory(threadFactory)
+            .build();
     this.batchEnabled.set(true);
     return this;
   }