| /* |
| * 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. |
| */ |
| package org.apache.tinkerpop.gremlin.process.traversal.util; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicLong; |
| |
| /** |
| * @author Bob Briody (http://bobbriody.com) |
| */ |
| public class MutableMetrics extends ImmutableMetrics implements Cloneable { |
| |
| // Note: if you add new members then you probably need to add them to the copy constructor; |
| |
| private long tempTime = -1l; |
| |
| protected MutableMetrics() { |
| // necessary for gryo serialization |
| } |
| |
| public MutableMetrics(final String id, final String name) { |
| this.id = id; |
| this.name = name; |
| } |
| |
| |
| public void addNested(MutableMetrics metrics) { |
| this.nested.put(metrics.getId(), metrics); |
| } |
| |
| public void start() { |
| if (-1 != this.tempTime) { |
| throw new IllegalStateException("Internal Error: Concurrent Metrics start. Stop timer before starting timer."); |
| } |
| this.tempTime = System.nanoTime(); |
| } |
| |
| public void stop() { |
| if (-1 == this.tempTime) |
| throw new IllegalStateException("Internal Error: Metrics has not been started. Start timer before stopping timer"); |
| this.durationNs = this.durationNs + (System.nanoTime() - this.tempTime); |
| this.tempTime = -1; |
| } |
| |
| public void incrementCount(String key, final long incr) { |
| AtomicLong count = this.counts.get(key); |
| if (count == null) { |
| count = new AtomicLong(); |
| this.counts.put(key, count); |
| } |
| count.addAndGet(incr); |
| } |
| |
| public void setDuration(long dur, TimeUnit unit) { |
| this.durationNs = TimeUnit.NANOSECONDS.convert(dur, unit); |
| } |
| |
| public void setCount(String key, final long val) { |
| this.counts.put(key, new AtomicLong(val)); |
| } |
| |
| public void aggregate(MutableMetrics other) { |
| this.durationNs += other.durationNs; |
| for (Map.Entry<String, AtomicLong> otherCount : other.counts.entrySet()) { |
| AtomicLong thisCount = this.counts.get(otherCount.getKey()); |
| if (thisCount == null) { |
| thisCount = new AtomicLong(otherCount.getValue().get()); |
| this.counts.put(otherCount.getKey(), thisCount); |
| } else { |
| thisCount.addAndGet(otherCount.getValue().get()); |
| } |
| } |
| |
| // Merge annotations. If multiple values for a given key are found then append it to a comma-separated list. |
| for (Map.Entry<String, Object> p : other.annotations.entrySet()) { |
| if (this.annotations.containsKey(p.getKey())) { |
| // Strings are concatenated |
| Object existingVal = this.annotations.get(p.getKey()); |
| if (existingVal instanceof String) { |
| final List<String> existingValues = Arrays.asList(existingVal.toString().split(",")); |
| if (!existingValues.contains(p.getValue())) { |
| // New value. Append to comma-separated list. |
| this.annotations.put(p.getKey(), existingVal.toString() + ',' + p.getValue()); |
| } |
| } else { |
| // Numbers are summed |
| Number existingNum = (Number) existingVal; |
| Number otherNum = (Number) p.getValue(); |
| Number newVal; |
| if (existingNum instanceof Double || existingNum instanceof Float) { |
| newVal = |
| existingNum.doubleValue() + otherNum.doubleValue(); |
| } else { |
| newVal = existingNum.longValue() + otherNum.longValue(); |
| } |
| this.annotations.put(p.getKey(), newVal); |
| } |
| } else { |
| this.annotations.put(p.getKey(), p.getValue()); |
| } |
| } |
| this.annotations.putAll(other.annotations); |
| |
| // Merge nested Metrics |
| other.nested.values().forEach(nested -> { |
| MutableMetrics thisNested = (MutableMetrics) this.nested.get(nested.getId()); |
| if (thisNested == null) { |
| thisNested = new MutableMetrics(nested.getId(), nested.getName()); |
| this.nested.put(thisNested.getId(), thisNested); |
| } |
| thisNested.aggregate((MutableMetrics) nested); |
| }); |
| } |
| |
| /** |
| * Set an annotation value. Support exists for Strings and Numbers only. During a merge, Strings are concatenated |
| * into a "," (comma) separated list of distinct values (duplicates are ignored), and Numbers are summed. |
| * |
| * @param key |
| * @param value |
| */ |
| public void setAnnotation(String key, Object value) { |
| if (!(value instanceof String) && !(value instanceof Number)) { |
| throw new IllegalArgumentException("Metrics annotations only support String and Number values."); |
| } |
| annotations.put(key, value); |
| } |
| |
| @Override |
| public MutableMetrics getNested(String metricsId) { |
| return (MutableMetrics) nested.get(metricsId); |
| } |
| |
| public ImmutableMetrics getImmutableClone() { |
| final ImmutableMetrics clone = new ImmutableMetrics(); |
| copyMembers(clone); |
| this.nested.values().forEach(nested -> clone.nested.put(nested.id, ((MutableMetrics) nested).getImmutableClone())); |
| return clone; |
| } |
| |
| protected void copyMembers(final ImmutableMetrics clone) { |
| clone.id = this.id; |
| clone.name = this.name; |
| // Note: This value is overwritten in the DependantMutableMetrics overridden copyMembers method. |
| clone.durationNs = this.durationNs; |
| for (Map.Entry<String, AtomicLong> c : this.counts.entrySet()) { |
| clone.counts.put(c.getKey(), new AtomicLong(c.getValue().get())); |
| } |
| for (Map.Entry<String, Object> a : this.annotations.entrySet()) { |
| clone.annotations.put(a.getKey(), a.getValue()); |
| } |
| } |
| |
| @Override |
| public MutableMetrics clone() { |
| final MutableMetrics clone = new MutableMetrics(); |
| copyMembers(clone); |
| this.nested.values().forEach(nested -> clone.nested.put(nested.id, ((MutableMetrics) nested).clone())); |
| return clone; |
| } |
| |
| } |