forked from flashcat/categraf
102 lines
2.8 KiB
Go
102 lines
2.8 KiB
Go
// mongodb_exporter
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// Copyright (C) 2017 Percona LLC
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package exporter
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import (
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"context"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/sirupsen/logrus"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/mongo"
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)
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type dbstatsCollector struct {
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ctx context.Context
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base *baseCollector
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compatibleMode bool
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topologyInfo labelsGetter
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databaseFilter []string
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}
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// newDBStatsCollector creates a collector for statistics on database storage.
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func newDBStatsCollector(ctx context.Context, client *mongo.Client, logger *logrus.Logger, compatible bool, topology labelsGetter, databaseRegex []string) *dbstatsCollector {
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return &dbstatsCollector{
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ctx: ctx,
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base: newBaseCollector(client, logger),
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compatibleMode: compatible,
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topologyInfo: topology,
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databaseFilter: databaseRegex,
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}
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}
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func (d *dbstatsCollector) Describe(ch chan<- *prometheus.Desc) {
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d.base.Describe(d.ctx, ch, d.collect)
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}
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func (d *dbstatsCollector) Collect(ch chan<- prometheus.Metric) {
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d.base.Collect(ch, d.collect)
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}
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func (d *dbstatsCollector) collect(ch chan<- prometheus.Metric) {
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logger := d.base.logger
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client := d.base.client
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dbNames, err := databases(d.ctx, client, d.databaseFilter, nil)
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if err != nil {
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logger.Errorf("Failed to get database names: %s", err)
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return
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}
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logger.Debugf("getting stats for databases: %v", dbNames)
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for _, db := range dbNames {
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var dbStats bson.M
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cmd := bson.D{{Key: "dbStats", Value: 1}, {Key: "scale", Value: 1}}
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r := client.Database(db).RunCommand(d.ctx, cmd)
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err := r.Decode(&dbStats)
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if err != nil {
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logger.Errorf("Failed to get $dbstats for database %s: %s", db, err)
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continue
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}
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logger.Debugf("$dbStats metrics for %s", db)
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debugResult(logger, dbStats)
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prefix := "dbstats"
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labels := d.topologyInfo.baseLabels()
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// Since all dbstats will have the same fields, we need to use a label
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// to differentiate metrics between different databases.
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labels["database"] = db
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newMetrics := makeMetrics(prefix, dbStats, labels, d.compatibleMode)
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for _, metric := range newMetrics {
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ch <- metric
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}
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}
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}
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var _ prometheus.Collector = (*dbstatsCollector)(nil)
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