[GitHub] nwangtw closed pull request #3116: Support utils.Time of kafka-client-spout

[GitBox <gi...@apache.org>]

nwangtw closed pull request #3116: Support utils.Time of kafka-client-spout
URL: https://github.com/apache/incubator-heron/pull/3116
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/storm-compatibility/src/java/org/apache/storm/utils/Time.java b/storm-compatibility/src/java/org/apache/storm/utils/Time.java
new file mode 100644
index 0000000000..3117e0a392
--- /dev/null
+++ b/storm-compatibility/src/java/org/apache/storm/utils/Time.java
@@ -0,0 +1,241 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.storm.utils;
+
+import java.util.Iterator;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicLong;
+import java.util.concurrent.locks.LockSupport;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+/**
+ * This class implements time simulation support. When time simulation is enabled,
+ * methods on this class will use fixed time. When time simulation is disabled,
+ * methods will pass through to relevant java.lang.System/java.lang.Thread calls.
+ * Methods using units higher than nanoseconds will pass through to System.currentTimeMillis().
+ * Methods supporting nanoseconds will pass through to System.nanoTime().
+ */
+public final class Time {
+  private static final Logger LOG = Logger.getLogger(Time.class.getName());
+  private static final AtomicBoolean SIMULATING = new AtomicBoolean(false);
+  private static final AtomicLong AUTO_ADVANCE_NANOS_ON_SLEEP = new AtomicLong(0);
+  private static final Map<Thread, AtomicLong> THREAD_SLEEP_TIMES_NANOS = new ConcurrentHashMap<>();
+  private static final Object SLEEP_TIMES_LOCK = new Object();
+  private static final AtomicLong SIMULATED_CURR_TIME_NANOS = new AtomicLong(0);
+
+  private Time() {
+  }
+
+  public static boolean isSimulating() {
+    return SIMULATING.get();
+  }
+
+  public static void sleepUntil(long targetTimeMs) throws InterruptedException {
+    if (SIMULATING.get()) {
+      simulatedSleepUntilNanos(millisToNanos(targetTimeMs));
+    } else {
+      long sleepTimeMs = targetTimeMs - currentTimeMillis();
+      if (sleepTimeMs > 0) {
+        Thread.sleep(sleepTimeMs);
+      }
+    }
+  }
+
+  public static void sleepUntilNanos(long targetTimeNanos) throws InterruptedException {
+    if (SIMULATING.get()) {
+      simulatedSleepUntilNanos(targetTimeNanos);
+    } else {
+      long sleepTimeNanos = targetTimeNanos - nanoTime();
+      long sleepTimeMs = nanosToMillis(sleepTimeNanos);
+      int sleepTimeNanosSansMs = (int) (sleepTimeNanos % 1_000_000);
+      if (sleepTimeNanos > 0) {
+        Thread.sleep(sleepTimeMs, sleepTimeNanosSansMs);
+      }
+    }
+  }
+
+  private static void simulatedSleepUntilNanos(long targetTimeNanos) throws InterruptedException {
+    try {
+      synchronized (SLEEP_TIMES_LOCK) {
+        if (!SIMULATING.get()) {
+          LOG.log(Level.FINER, Thread.currentThread()
+                  + " is still sleeping after simulated time disabled.",
+              new RuntimeException("STACK TRACE"));
+          throw new InterruptedException();
+        }
+        THREAD_SLEEP_TIMES_NANOS.put(Thread.currentThread(), new AtomicLong(targetTimeNanos));
+      }
+      while (SIMULATED_CURR_TIME_NANOS.get() < targetTimeNanos) {
+        synchronized (SLEEP_TIMES_LOCK) {
+          if (!SIMULATING.get()) {
+            LOG.log(Level.FINER, Thread.currentThread()
+                    + " is still sleeping after simulated time disabled.",
+                new RuntimeException("STACK TRACE"));
+            throw new InterruptedException();
+          }
+          long autoAdvance = AUTO_ADVANCE_NANOS_ON_SLEEP.get();
+          if (autoAdvance > 0) {
+            advanceTimeNanos(autoAdvance);
+          }
+        }
+        Thread.sleep(10);
+      }
+    } finally {
+      THREAD_SLEEP_TIMES_NANOS.remove(Thread.currentThread());
+    }
+  }
+
+  public static void sleep(long ms) throws InterruptedException {
+    if (ms > 0) {
+      if (SIMULATING.get()) {
+        simulatedSleepUntilNanos(millisToNanos(currentTimeMillis() + ms));
+      } else {
+        Thread.sleep(ms);
+      }
+    }
+  }
+
+  public static void parkNanos(long nanos) throws InterruptedException {
+    if (nanos > 0) {
+      if (SIMULATING.get()) {
+        simulatedSleepUntilNanos(nanoTime() + nanos);
+      } else {
+        LockSupport.parkNanos(nanos);
+      }
+    }
+  }
+
+  public static void sleepSecs(long secs) throws InterruptedException {
+    if (secs > 0) {
+      sleep(secs * 1000);
+    }
+  }
+
+  public static long nanoTime() {
+    if (SIMULATING.get()) {
+      return SIMULATED_CURR_TIME_NANOS.get();
+    } else {
+      return System.nanoTime();
+    }
+  }
+
+  public static long currentTimeMillis() {
+    if (SIMULATING.get()) {
+      return nanosToMillis(SIMULATED_CURR_TIME_NANOS.get());
+    } else {
+      return System.currentTimeMillis();
+    }
+  }
+
+  public static long nanosToMillis(long nanos) {
+    return nanos / 1_000_000;
+  }
+
+  public static long millisToNanos(long millis) {
+    return millis * 1_000_000;
+  }
+
+  public static long secsToMillis(int secs) {
+    return 1000 * (long) secs;
+  }
+
+  public static long secsToMillisLong(double secs) {
+    return (long) (1000 * secs);
+  }
+
+  public static int currentTimeSecs() {
+    return (int) (currentTimeMillis() / 1000);
+  }
+
+  public static int deltaSecs(int timeInSeconds) {
+    return Time.currentTimeSecs() - timeInSeconds;
+  }
+
+  public static long deltaMs(long timeInMilliseconds) {
+    return Time.currentTimeMillis() - timeInMilliseconds;
+  }
+
+  public static void advanceTime(long ms) {
+    advanceTimeNanos(millisToNanos(ms));
+  }
+
+  public static void advanceTimeNanos(long nanos) {
+    if (!SIMULATING.get()) {
+      throw new IllegalStateException("Cannot simulate time unless in simulation mode");
+    }
+    if (nanos < 0) {
+      throw new IllegalArgumentException("advanceTime only accepts positive time as an argument");
+    }
+    synchronized (SLEEP_TIMES_LOCK) {
+      long newTime = SIMULATED_CURR_TIME_NANOS.addAndGet(nanos);
+      Iterator<AtomicLong> sleepTimesIter = THREAD_SLEEP_TIMES_NANOS.values().iterator();
+      while (sleepTimesIter.hasNext()) {
+        AtomicLong curr = sleepTimesIter.next();
+        if (SIMULATED_CURR_TIME_NANOS.get() >= curr.get()) {
+          sleepTimesIter.remove();
+        }
+      }
+      LOG.log(Level.FINER, "Advanced simulated time to " + newTime);
+    }
+  }
+
+  public static void advanceTimeSecs(long secs) {
+    advanceTime(secs * 1_000);
+  }
+
+  public static boolean isThreadWaiting(Thread t) {
+    if (!SIMULATING.get()) {
+      throw new IllegalStateException("Must be in simulation mode");
+    }
+    AtomicLong time = THREAD_SLEEP_TIMES_NANOS.get(t);
+    return !t.isAlive() || time != null && nanoTime() < time.longValue();
+  }
+
+  public static class SimulatedTime implements AutoCloseable {
+
+    public SimulatedTime() {
+      this(null);
+    }
+
+    public SimulatedTime(Number advanceTimeMs) {
+      synchronized (Time.SLEEP_TIMES_LOCK) {
+        Time.SIMULATING.set(true);
+        Time.SIMULATED_CURR_TIME_NANOS.set(0);
+        Time.THREAD_SLEEP_TIMES_NANOS.clear();
+        if (advanceTimeMs != null) {
+          Time.AUTO_ADVANCE_NANOS_ON_SLEEP.set(millisToNanos(advanceTimeMs.longValue()));
+        } else {
+          Time.AUTO_ADVANCE_NANOS_ON_SLEEP.set(0);
+        }
+        LOG.warning("AutoCloseable Simulated Time Starting...");
+      }
+    }
+
+    @Override
+    public void close() {
+      synchronized (Time.SLEEP_TIMES_LOCK) {
+        Time.SIMULATING.set(false);
+        LOG.warning("AutoCloseable Simulated Time Ending...");
+      }
+    }
+  }
+}


 

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services