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[EAGLE-872] Transform counter metric to rate metric
- Add transform bolt using counterToRateFunction in HadoopMetricMonitorApp's storm topology. https://issues.apache.org/jira/browse/EAGLE-872 Author: r7raul1984 <tangjijun@yhd.com> Closes #783 from r7raul1984/EAGLE-872.
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26 changes: 26 additions & 0 deletions
26
...le-app-base/src/main/java/org/apache/eagle/app/environment/builder/CountMetricFilter.java
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/* | ||
* 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 | ||
* | ||
* http://www.apache.org/licenses/LICENSE-2.0 | ||
* | ||
* 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. | ||
*/ | ||
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package org.apache.eagle.app.environment.builder; | ||
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import java.io.Serializable; | ||
import java.util.function.Function; | ||
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@FunctionalInterface | ||
interface CountMetricFilter extends Function<String, Boolean>, Serializable { | ||
} |
220 changes: 220 additions & 0 deletions
220
...pp-base/src/main/java/org/apache/eagle/app/environment/builder/CounterToRateFunction.java
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/* | ||
* 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. | ||
*/ | ||
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package org.apache.eagle.app.environment.builder; | ||
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import com.google.common.base.Preconditions; | ||
import org.apache.eagle.app.utils.Clock; | ||
import org.slf4j.Logger; | ||
import org.slf4j.LoggerFactory; | ||
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import java.util.LinkedHashMap; | ||
import java.util.Map; | ||
import java.util.concurrent.TimeUnit; | ||
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public class CounterToRateFunction implements TransformFunction { | ||
private static final Logger LOG = LoggerFactory.getLogger(CounterToRateFunction.class); | ||
private final Map<String, CounterValue> cache; | ||
private MetricDescriptor metricDescriptor; | ||
private Collector collector; | ||
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public CounterToRateFunction(MetricDescriptor metricDescriptor, long heartbeat, TimeUnit unit, final Clock clock) { | ||
final long heartbeatMillis = TimeUnit.MILLISECONDS.convert(heartbeat, unit); | ||
this.cache = new LinkedHashMap<String, CounterValue>(16, 0.75f, true) { | ||
protected boolean removeEldestEntry(Map.Entry<String, CounterValue> eldest) { | ||
final long now = clock.now(); | ||
final long lastMod = eldest.getValue().getTimestamp(); | ||
final boolean expired = (now - lastMod) > heartbeatMillis; | ||
if (expired) { | ||
LOG.debug("heartbeat interval exceeded, expiring {}", eldest.getKey()); | ||
} | ||
return expired; | ||
} | ||
}; | ||
this.metricDescriptor = metricDescriptor; | ||
} | ||
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@Override | ||
public String getName() { | ||
return "CounterToRate"; | ||
} | ||
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@Override | ||
public void open(Collector collector) { | ||
this.collector = collector; | ||
} | ||
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@Override | ||
public void transform(Map event) { | ||
Metric metric = toMetric(event); | ||
LOG.debug("received {} metrics", metric); | ||
if (new DefaultCountMetricFilter().apply(metric.getMetricName())) { | ||
final String metricName = metric.getMetricName(); | ||
final CounterValue prev = cache.get(metricName); | ||
if (prev != null) { | ||
final double rate = prev.computeRate(metric); | ||
event.put(metricDescriptor.getValueField(), rate); | ||
collector.collect(event.toString(), event); | ||
} else { | ||
CounterValue current = new CounterValue(metric); | ||
cache.put(metricName, current); | ||
} | ||
} else { | ||
collector.collect(event.toString(), event); | ||
} | ||
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} | ||
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@Override | ||
public void close() { | ||
cache.clear(); | ||
} | ||
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private Metric toMetric(Map event) { | ||
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String metricName = ""; | ||
for (String dimensionField : metricDescriptor.getDimensionFields()) { | ||
metricName += event.get(dimensionField) + "-"; | ||
} | ||
metricName += metricDescriptor.getMetricNameSelector().getMetricName(event); | ||
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long timestamp = metricDescriptor.getTimestampSelector().getTimestamp(event); | ||
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return new Metric(metricName, timestamp, getCurrentValue(event)); | ||
} | ||
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private double getCurrentValue(Map event) { | ||
double[] values; | ||
if (event.containsKey(metricDescriptor.getValueField())) { | ||
values = new double[] {(double) event.get(metricDescriptor.getValueField())}; | ||
} else { | ||
LOG.warn("Event has no value field '{}': {}, use 0 by default", metricDescriptor.getValueField(), event); | ||
values = new double[] {0}; | ||
} | ||
return values[0]; | ||
} | ||
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protected static class CounterValue { | ||
private long timestamp; | ||
private double value; | ||
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public CounterValue(long timestamp, double value) { | ||
this.timestamp = timestamp; | ||
this.value = value; | ||
} | ||
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public CounterValue(Metric m) { | ||
this(m.getTimestamp(), m.getNumberValue().doubleValue()); | ||
} | ||
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public long getTimestamp() { | ||
return timestamp; | ||
} | ||
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public double computeRate(Metric m) { | ||
final long currentTimestamp = m.getTimestamp(); | ||
final double currentValue = m.getNumberValue().doubleValue(); | ||
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final long durationMillis = currentTimestamp - timestamp; | ||
final double delta = currentValue - value; | ||
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timestamp = currentTimestamp; | ||
value = currentValue; | ||
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return computeRate(durationMillis, delta); | ||
} | ||
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private double computeRate(long durationMillis, double delta) { | ||
final double millisPerSecond = 1000.0; | ||
final double duration = durationMillis / millisPerSecond; | ||
return (duration <= 0.0 || delta <= 0.0) ? 0.0 : delta / duration; | ||
} | ||
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@Override | ||
public String toString() { | ||
return "CounterValue{" + "timestamp=" + timestamp + ", value=" + value + '}'; | ||
} | ||
} | ||
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protected final class Metric { | ||
private final String metricName; | ||
private final long timestamp; | ||
private final Object value; | ||
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public Metric(String metricName, long timestamp, Object value) { | ||
this.metricName = Preconditions.checkNotNull(metricName, "metricName"); | ||
this.timestamp = timestamp; | ||
this.value = Preconditions.checkNotNull(value, "value"); | ||
} | ||
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public String getMetricName() { | ||
return metricName; | ||
} | ||
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public long getTimestamp() { | ||
return timestamp; | ||
} | ||
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public Object getValue() { | ||
return value; | ||
} | ||
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public Number getNumberValue() { | ||
return (Number) value; | ||
} | ||
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public boolean hasNumberValue() { | ||
return (value instanceof Number); | ||
} | ||
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public boolean isCounter() { | ||
return metricName.endsWith("count"); | ||
} | ||
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@Override | ||
public boolean equals(Object obj) { | ||
if (obj == null || !(obj instanceof Metric)) { | ||
return false; | ||
} | ||
Metric m = (Metric) obj; | ||
return metricName.equals(m.getMetricName()) | ||
&& timestamp == m.getTimestamp() | ||
&& value.equals(m.getValue()); | ||
} | ||
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@Override | ||
public int hashCode() { | ||
int result = metricName.hashCode(); | ||
result = 31 * result + (int) (timestamp ^ (timestamp >>> 32)); | ||
result = 31 * result + value.hashCode(); | ||
return result; | ||
} | ||
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@Override | ||
public String toString() { | ||
return "Metric{metricName=" + metricName + ", timestamp=" + timestamp + ", value=" + value + '}'; | ||
} | ||
} | ||
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private class DefaultCountMetricFilter implements CountMetricFilter { | ||
@Override | ||
public Boolean apply(String metricName) { | ||
return metricName.endsWith("count"); | ||
} | ||
} | ||
} |
24 changes: 24 additions & 0 deletions
24
eagle-core/eagle-app/eagle-app-base/src/main/java/org/apache/eagle/app/utils/Clock.java
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/* | ||
* 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. | ||
*/ | ||
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package org.apache.eagle.app.utils; | ||
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public interface Clock { | ||
Clock WALL = System::currentTimeMillis; | ||
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long now(); | ||
} |
35 changes: 35 additions & 0 deletions
35
...re/eagle-app/eagle-app-base/src/main/java/org/apache/eagle/app/utils/ClockWithOffset.java
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@@ -0,0 +1,35 @@ | ||
/* | ||
* 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. | ||
*/ | ||
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package org.apache.eagle.app.utils; | ||
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public enum ClockWithOffset implements Clock { | ||
INSTANCE; | ||
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private volatile long offset = 0L; | ||
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public void setOffset(long offset) { | ||
if (offset >= 0) { | ||
this.offset = offset; | ||
} | ||
} | ||
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@Override | ||
public long now() { | ||
return offset + System.currentTimeMillis(); | ||
} | ||
} |
54 changes: 54 additions & 0 deletions
54
...e-core/eagle-app/eagle-app-base/src/main/java/org/apache/eagle/app/utils/ManualClock.java
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/* | ||
* 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.eagle.app.utils; | ||
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import java.util.concurrent.atomic.AtomicLong; | ||
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public class ManualClock implements Clock { | ||
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private final AtomicLong time; | ||
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public ManualClock(long init) { | ||
time = new AtomicLong(init); | ||
} | ||
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public void set(long t) { | ||
time.set(t); | ||
} | ||
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public long now() { | ||
return time.get(); | ||
} | ||
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@Override | ||
public boolean equals(Object o) { | ||
if (this == o) { | ||
return true; | ||
} | ||
if (o == null || getClass() != o.getClass()) { | ||
return false; | ||
} | ||
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ManualClock clock = (ManualClock) o; | ||
return now() == clock.now(); | ||
} | ||
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@Override | ||
public int hashCode() { | ||
return Long.valueOf(now()).hashCode(); | ||
} | ||
} |
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