Jian Li | 64dd889 | 2015-12-30 14:13:18 -0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2015-present Open Networking Foundation |
Jian Li | 64dd889 | 2015-12-30 14:13:18 -0800 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.codec.impl; |
| 17 | |
| 18 | import com.codahale.metrics.Counter; |
| 19 | import com.codahale.metrics.Meter; |
| 20 | import com.codahale.metrics.Metric; |
| 21 | import com.codahale.metrics.Timer; |
| 22 | import com.fasterxml.jackson.databind.JsonNode; |
| 23 | import org.hamcrest.Description; |
| 24 | import org.hamcrest.TypeSafeDiagnosingMatcher; |
| 25 | |
| 26 | import java.util.concurrent.TimeUnit; |
| 27 | |
| 28 | /** |
| 29 | * Hamcrest matcher for metrics. |
| 30 | */ |
| 31 | public final class MetricJsonMatcher extends TypeSafeDiagnosingMatcher<JsonNode> { |
| 32 | |
| 33 | private final Metric metric; |
| 34 | |
| 35 | private MetricJsonMatcher(Metric metric) { |
| 36 | this.metric = metric; |
| 37 | } |
| 38 | |
| 39 | @Override |
| 40 | protected boolean matchesSafely(JsonNode jsonMetric, Description description) { |
| 41 | |
| 42 | // check counter |
| 43 | if (metric instanceof Counter) { |
| 44 | Counter counter = (Counter) metric; |
| 45 | long jsonCounter = jsonMetric.get("counter").asLong(); |
| 46 | long counterVal = counter.getCount(); |
| 47 | if (jsonCounter != counterVal) { |
| 48 | description.appendText("counter was " + jsonCounter); |
| 49 | return false; |
| 50 | } |
| 51 | } |
| 52 | |
| 53 | // check meter |
| 54 | if (metric instanceof Meter) { |
| 55 | Meter meter = (Meter) metric; |
| 56 | |
| 57 | long jsonCounter = jsonMetric.get("counter").asLong(); |
| 58 | long counterVal = meter.getCount(); |
| 59 | if (jsonCounter != counterVal) { |
| 60 | description.appendText("counter was " + jsonCounter); |
| 61 | return false; |
| 62 | } |
| 63 | |
| 64 | double jsonOneMinRate = jsonMetric.get("1_min_rate").asDouble(); |
| 65 | double oneMinRate = meter.getOneMinuteRate(); |
| 66 | if (jsonOneMinRate != oneMinRate) { |
| 67 | description.appendText("one minute rate was " + jsonOneMinRate); |
| 68 | return false; |
| 69 | } |
| 70 | |
| 71 | double jsonFiveMinRate = jsonMetric.get("5_min_rate").asDouble(); |
| 72 | double fiveMinRate = meter.getFiveMinuteRate(); |
| 73 | if (jsonFiveMinRate != fiveMinRate) { |
| 74 | description.appendText("five minute rate was " + jsonFiveMinRate); |
| 75 | return false; |
| 76 | } |
| 77 | |
| 78 | double jsonFiftMinRate = jsonMetric.get("15_min_rate").asDouble(); |
| 79 | double fiftMinRate = meter.getFifteenMinuteRate(); |
| 80 | if (jsonFiftMinRate != fiftMinRate) { |
| 81 | description.appendText("fifteen minute rate was " + jsonFiftMinRate); |
| 82 | return false; |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | // check timer |
| 87 | if (metric instanceof Timer) { |
| 88 | Timer timer = (Timer) metric; |
| 89 | |
| 90 | long jsonCounter = jsonMetric.get("counter").asLong(); |
| 91 | long counterVal = timer.getCount(); |
| 92 | if (jsonCounter != counterVal) { |
| 93 | description.appendText("counter was " + jsonCounter); |
| 94 | return false; |
| 95 | } |
| 96 | |
| 97 | double jsonOneMinRate = jsonMetric.get("1_min_rate").asDouble(); |
| 98 | double oneMinRate = timer.getOneMinuteRate(); |
| 99 | if (jsonOneMinRate != oneMinRate) { |
| 100 | description.appendText("one minute rate was " + jsonOneMinRate); |
| 101 | return false; |
| 102 | } |
| 103 | |
| 104 | double jsonFiveMinRate = jsonMetric.get("5_min_rate").asDouble(); |
| 105 | double fiveMinRate = timer.getFiveMinuteRate(); |
| 106 | if (jsonFiveMinRate != fiveMinRate) { |
| 107 | description.appendText("five minute rate was " + jsonFiveMinRate); |
| 108 | return false; |
| 109 | } |
| 110 | |
| 111 | double jsonFiftMinRate = jsonMetric.get("15_min_rate").asDouble(); |
| 112 | double fiftMinRate = timer.getFifteenMinuteRate(); |
| 113 | if (jsonFiftMinRate != fiftMinRate) { |
| 114 | description.appendText("fifteen minute rate was " + jsonFiftMinRate); |
| 115 | return false; |
| 116 | } |
| 117 | |
| 118 | double jsonMean = jsonMetric.get("mean").asDouble(); |
| 119 | double mean = nanoToMs(timer.getSnapshot().getMean()); |
| 120 | if (jsonMean != mean) { |
| 121 | description.appendText("mean was " + jsonMean); |
| 122 | return false; |
| 123 | } |
| 124 | |
| 125 | double jsonMin = jsonMetric.get("min").asDouble(); |
| 126 | double min = nanoToMs(timer.getSnapshot().getMin()); |
| 127 | if (jsonMin != min) { |
| 128 | description.appendText("json min was " + jsonMin); |
| 129 | return false; |
| 130 | } |
| 131 | |
| 132 | double jsonMax = jsonMetric.get("max").asDouble(); |
| 133 | double max = nanoToMs(timer.getSnapshot().getMax()); |
| 134 | if (jsonMax != max) { |
| 135 | description.appendText("max was " + jsonMax); |
| 136 | return false; |
| 137 | } |
| 138 | |
| 139 | double jsonStdDev = jsonMetric.get("stddev").asDouble(); |
| 140 | double stdDev = nanoToMs(timer.getSnapshot().getStdDev()); |
| 141 | if (jsonStdDev != stdDev) { |
| 142 | description.appendText("stddev was " + jsonStdDev); |
| 143 | return false; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | return true; |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public void describeTo(Description description) { |
| 152 | description.appendText(metric.toString()); |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Factory to allocate a metric matcher. |
| 157 | * |
| 158 | * @param metric metric object we are looking for |
| 159 | * @return matcher |
| 160 | */ |
| 161 | public static MetricJsonMatcher matchesMetric(Metric metric) { |
| 162 | return new MetricJsonMatcher(metric); |
| 163 | } |
| 164 | |
| 165 | private double nanoToMs(double nano) { |
| 166 | return TimeUnit.MILLISECONDS.convert((long) nano, TimeUnit.NANOSECONDS); |
| 167 | } |
| 168 | } |