Github user srdo commented on a diff in the pull request:
https://github.com/apache/storm/pull/2234#discussion_r128850445
--- Diff:
external/storm-jms/src/main/java/org/apache/storm/jms/spout/JmsSpout.java ---
@@ -30,65 +35,110 @@
import javax.jms.MessageListener;
import javax.jms.Session;
-import org.apache.storm.topology.base.BaseRichSpout;
-import org.apache.storm.utils.Utils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
+import org.apache.storm.Config;
import org.apache.storm.jms.JmsProvider;
import org.apache.storm.jms.JmsTupleProducer;
import org.apache.storm.spout.SpoutOutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.topology.OutputFieldsDeclarer;
+import org.apache.storm.topology.base.BaseRichSpout;
import org.apache.storm.tuple.Values;
+import org.apache.storm.utils.Utils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
/**
- * A Storm <code>Spout</code> implementation that listens to a JMS topic
or queue
- * and outputs tuples based on the messages it receives.
- * <p>
- * <code>JmsSpout</code> instances rely on <code>JmsProducer</code>
implementations
- * to obtain the JMS <code>ConnectionFactory</code> and
<code>Destination</code> objects
- * necessary to connect to a JMS topic/queue.
- * <p>
- * When a <code>JmsSpout</code> receives a JMS message, it delegates to an
- * internal <code>JmsTupleProducer</code> instance to create a Storm tuple
from the
- * incoming message.
- * <p>
- * Typically, developers will supply a custom
<code>JmsTupleProducer</code> implementation
- * appropriate for the expected message content.
+ * A Storm <code>Spout</code> implementation that listens to a JMS topic or
+ * queue and outputs tuples based on the messages it receives.
+ *
+ * <p><code>JmsSpout</code> instances rely on <code>JmsProducer</code>
+ * implementations to obtain the JMS
+ * <code>ConnectionFactory</code> and <code>Destination</code> objects
necessary
+ * to connect to a JMS topic/queue.
+ *
+ * <p>When a <code>JmsSpout</code> receives a JMS message, it delegates to
an
+ * internal <code>JmsTupleProducer</code> instance to create a Storm tuple
from
+ * the incoming message.
+ *
+ * <p>Typically, developers will supply a custom
<code>JmsTupleProducer</code>
+ * implementation appropriate for the expected message content.
*/
@SuppressWarnings("serial")
public class JmsSpout extends BaseRichSpout implements MessageListener {
+
+ /** The logger object instance for this class. */
private static final Logger LOG =
LoggerFactory.getLogger(JmsSpout.class);
- // JMS options
+ /** The logger of the recovery task. */
+ private static final Logger RECOVERY_TASK_LOG =
+ LoggerFactory.getLogger(RecoveryTask.class);
+
+ /** Time to sleep between queue polling attempts. */
+ private static final int POLL_INTERVAL = 50;
+
+ /**
+ * The default value the {@link Config#TOPOLOGY_MESSAGE_TIMEOUT_SECS}.
+ */
+ private static final int DEFAULT_MESSAGE_TIMEOUT = 30;
+
+ /** Time to wait before queuing the first recovery task (in seconds).
*/
+ private static final int RECOVERY_DELAY = 10;
--- End diff --
Nit: RECOVERY_DELAY_SECS
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