Merge pull request #282 from andyflury/feature-batchprocessor-capacity

Initial capacity on LinkedBlockingQueue inside BatchProcessor

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

@@ -30,7 +30,7 @@
 public class BatchProcessor {
 
   private static final Logger LOG = Logger.getLogger(BatchProcessor.class.getName());
-  protected final BlockingQueue<AbstractBatchEntry> queue = new LinkedBlockingQueue<>();
+  protected final BlockingQueue<AbstractBatchEntry> queue;
   private final ScheduledExecutorService scheduler;
   final InfluxDBImpl influxDB;
   final int actions;
@@ -171,6 +171,11 @@ public static Builder builder(final InfluxDB influxDB) {
     this.flushIntervalUnit = flushIntervalUnit;
     this.flushInterval = flushInterval;
     this.scheduler = Executors.newSingleThreadScheduledExecutor(threadFactory);
+        if (actions > 1 && actions < Integer.MAX_VALUE) {
+        this.queue = new LinkedBlockingQueue<>(actions);
+    } else {
+        this.queue = new LinkedBlockingQueue<>();
+    }
     // Flush at specified Rate
     this.scheduler.scheduleAtFixedRate(new Runnable() {
       @Override
@@ -238,7 +243,11 @@ void write() {
    *            the batchEntry to write to the cache.
    */
   void put(final AbstractBatchEntry batchEntry) {
-    this.queue.add(batchEntry);
+    try {
+        this.queue.put(batchEntry);
+    } catch (InterruptedException e) {
+        throw new RuntimeException(e);
+    }
     if (this.queue.size() >= this.actions) {
       this.scheduler.submit(new Runnable() {
         @Override

src/test/java/org/influxdb/InfluxDBTest.java

@@ -209,6 +209,24 @@ public void testAsyncWritePointThroughUDP() {
 			this.influxDB.disableBatch();
 		}
 	}
+
+
+    /**
+     *  Test the implementation of {@link InfluxDB#write(int, Point)}'s async support.
+     */
+    @Test(expected = RuntimeException.class)
+    public void testAsyncWritePointThroughUDPFail() {
+        this.influxDB.enableBatch(1, 1, TimeUnit.SECONDS);
+        try{
+            Assert.assertTrue(this.influxDB.isBatchEnabled());
+            String measurement = TestUtils.getRandomMeasurement();
+            Point point = Point.measurement(measurement).tag("atag", "test").addField("used", 80L).addField("free", 1L).build();
+            Thread.currentThread().interrupt();
+            this.influxDB.write(UDP_PORT, point);
+        }finally{
+            this.influxDB.disableBatch();
+        }
+    }
 
     /**
      * Test writing to the database using string protocol.