| // Copyright (C) 2022 The Android Open Source Project |
| // |
| // Licensed 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 com.googlesource.gerrit.modules.cache.chroniclemap; |
| |
| import com.google.gerrit.metrics.Counter0; |
| import com.google.gerrit.metrics.Description; |
| import com.google.gerrit.metrics.MetricMaker; |
| |
| class ChronicleMapStoreMetrics { |
| private final String sanitizedName; |
| private final MetricMaker metricMaker; |
| private final String name; |
| private final Counter0 storePutFailures; |
| |
| ChronicleMapStoreMetrics(String name, MetricMaker metricMaker) { |
| this.name = name; |
| this.sanitizedName = metricMaker.sanitizeMetricName(name); |
| this.metricMaker = metricMaker; |
| |
| this.storePutFailures = |
| metricMaker.newCounter( |
| "cache/chroniclemap/store_put_failures_" + sanitizedName, |
| new Description( |
| "The number of errors caught when inserting entries in chronicle-map store: " |
| + name) |
| .setCumulative() |
| .setUnit("errors")); |
| } |
| |
| void incrementPutFailures() { |
| storePutFailures.increment(); |
| } |
| |
| <K, V> void registerCallBackMetrics(ChronicleMapStore<K, V> store) { |
| String PERCENTAGE_FREE_SPACE_METRIC = |
| "cache/chroniclemap/percentage_free_space_" + sanitizedName; |
| String REMAINING_AUTORESIZES_METRIC = |
| "cache/chroniclemap/remaining_autoresizes_" + sanitizedName; |
| String MAX_AUTORESIZES_METRIC = "cache/chroniclemap/max_autoresizes_" + sanitizedName; |
| |
| metricMaker.newCallbackMetric( |
| PERCENTAGE_FREE_SPACE_METRIC, |
| Long.class, |
| new Description( |
| String.format("The amount of free space in the %s cache as a percentage", name)), |
| () -> (long) store.percentageFreeSpace()); |
| |
| metricMaker.newCallbackMetric( |
| REMAINING_AUTORESIZES_METRIC, |
| Integer.class, |
| new Description( |
| String.format( |
| "The number of times the %s cache can automatically expand its capacity", name)), |
| store::remainingAutoResizes); |
| |
| metricMaker.newConstantMetric( |
| MAX_AUTORESIZES_METRIC, |
| store.maxAutoResizes(), |
| new Description( |
| String.format( |
| "The maximum number of times the %s cache can automatically expand its capacity", |
| name))); |
| } |
| } |