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85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
// Copyright 2018 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package collector
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import (
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"bytes"
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"database/sql"
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"regexp"
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"strconv"
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"strings"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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)
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const (
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// Exporter namespace.
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namespace = "mysql"
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// Math constant for picoseconds to seconds.
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picoSeconds = 1e12
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// Query to check whether user/table/client stats are enabled.
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userstatCheckQuery = `SHOW GLOBAL VARIABLES WHERE Variable_Name='userstat'
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OR Variable_Name='userstat_running'`
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)
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var logRE = regexp.MustCompile(`.+\.(\d+)$`)
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func newDesc(subsystem, name, help string) *prometheus.Desc {
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return prometheus.NewDesc(
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prometheus.BuildFQName(namespace, subsystem, name),
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help, nil, nil,
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)
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}
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func parseStatus(data sql.RawBytes) (float64, bool) {
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dataString := strings.ToLower(string(data))
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switch dataString {
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case "yes", "on":
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return 1, true
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case "no", "off", "disabled":
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return 0, true
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// SHOW SLAVE STATUS Slave_IO_Running can return "Connecting" which is a non-running state.
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case "connecting":
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return 0, true
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// SHOW GLOBAL STATUS like 'wsrep_cluster_status' can return "Primary" or "non-Primary"/"Disconnected"
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case "primary":
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return 1, true
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case "non-primary", "disconnected":
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return 0, true
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}
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if ts, err := time.Parse("Jan _2 15:04:05 2006 MST", string(data)); err == nil {
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return float64(ts.Unix()), true
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}
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if ts, err := time.Parse(time.DateTime, string(data)); err == nil {
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return float64(ts.Unix()), true
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}
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if logNum := logRE.Find(data); logNum != nil {
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value, err := strconv.ParseFloat(string(logNum), 64)
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return value, err == nil
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}
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value, err := strconv.ParseFloat(string(data), 64)
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return value, err == nil
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}
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func parsePrivilege(data sql.RawBytes) (float64, bool) {
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if bytes.Equal(data, []byte("Y")) {
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return 1, true
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}
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if bytes.Equal(data, []byte("N")) {
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return 0, true
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}
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return -1, false
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}
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