68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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//+build linux,cgo
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package instance
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import (
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"fmt"
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"github.com/coreos/go-systemd/sdjournal"
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"github.com/elastic/beats/libbeat/monitoring"
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)
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var (
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metrics *monitoring.Registry
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journals map[string]*sdjournal.Journal
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)
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// SetupJournalMetrics initializes and registers monitoring functions.
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func SetupJournalMetrics() {
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metrics = monitoring.Default.NewRegistry("journalbeat")
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journals = make(map[string]*sdjournal.Journal)
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monitoring.NewFunc(metrics, "journals", reportJournalSizes, monitoring.Report)
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}
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// AddJournalToMonitor adds a new journal which has to be monitored.
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func AddJournalToMonitor(path string, journal *sdjournal.Journal) {
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journals[path] = journal
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}
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// StopMonitoringJournal stops monitoring the journal under the path.
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func StopMonitoringJournal(path string) {
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delete(journals, path)
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}
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func reportJournalSizes(m monitoring.Mode, V monitoring.Visitor) {
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i := 0
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for path, journal := range journals {
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s, err := journal.GetUsage()
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if err != nil {
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continue
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}
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ns := fmt.Sprintf("journal_%d", i)
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monitoring.ReportNamespace(V, ns, func() {
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monitoring.ReportString(V, "path", path)
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monitoring.ReportInt(V, "size_in_bytes", int64(s))
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})
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i++
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}
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}
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