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prometheus/storage/metric/instrumentation.go

92 lines
3.9 KiB

// Copyright 2013 Prometheus Team
// 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 metric
import (
"github.com/prometheus/client_golang"
"github.com/prometheus/client_golang/maths"
"github.com/prometheus/client_golang/metrics"
"time"
)
const (
operation = "operation"
success = "success"
failure = "failure"
result = "result"
appendFingerprints = "append_fingerprints"
appendLabelNameFingerprint = "append_label_name_fingerprint"
appendLabelPairFingerprint = "append_label_pair_fingerprint"
appendSample = "append_sample"
appendSamples = "append_samples"
findUnindexedMetrics = "find_unindexed_metrics"
flushMemory = "flush_memory"
getBoundaryValues = "get_boundary_values"
getFingerprintsForLabelName = "get_fingerprints_for_label_name"
getFingerprintsForLabelSet = "get_fingerprints_for_labelset"
getLabelNameFingerprints = "get_label_name_fingerprints"
getMetricForFingerprint = "get_metric_for_fingerprint"
getRangeValues = "get_range_values"
getValueAtTime = "get_value_at_time"
hasIndexMetric = "has_index_metric"
hasLabelName = "has_label_name"
hasLabelPair = "has_label_pair"
indexFingerprints = "index_fingerprints"
indexLabelNames = "index_label_names"
indexLabelPairs = "index_label_pairs"
indexMetric = "index_metric"
indexMetrics = "index_metrics"
rebuildDiskFrontier = "rebuild_disk_frontier"
refreshHighWatermarks = "refresh_high_watermarks"
renderView = "render_view"
setLabelNameFingerprints = "set_label_name_fingerprints"
setLabelPairFingerprints = "set_label_pair_fingerprints"
writeMemory = "write_memory"
)
var (
diskLatencyHistogram = &metrics.HistogramSpecification{
Starts: metrics.LogarithmicSizedBucketsFor(0, 5000),
BucketBuilder: metrics.AccumulatingBucketBuilder(metrics.EvictAndReplaceWith(10, maths.Average), 100),
ReportablePercentiles: []float64{0.01, 0.05, 0.5, 0.90, 0.99},
}
curationDuration = metrics.NewCounter()
curationDurations = metrics.NewHistogram(diskLatencyHistogram)
storageOperations = metrics.NewCounter()
storageOperationDurations = metrics.NewCounter()
storageLatency = metrics.NewHistogram(diskLatencyHistogram)
queueSizes = metrics.NewGauge()
)
func recordOutcome(duration time.Duration, err error, success, failure map[string]string) {
labels := success
if err != nil {
labels = failure
}
storageOperations.Increment(labels)
asFloat := float64(duration / time.Microsecond)
storageLatency.Add(labels, asFloat)
storageOperationDurations.IncrementBy(labels, asFloat)
}
func init() {
registry.Register("prometheus_metric_disk_operations_total", "Total number of metric-related disk operations.", registry.NilLabels, storageOperations)
registry.Register("prometheus_metric_disk_latency_microseconds", "Latency for metric disk operations in microseconds.", registry.NilLabels, storageLatency)
registry.Register("prometheus_storage_operation_time_total_microseconds", "The total time spent performing a given storage operation.", registry.NilLabels, storageOperationDurations)
registry.Register("prometheus_storage_queue_sizes_total", "The various sizes and capacities of the storage queues.", registry.NilLabels, queueSizes)
}