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proxysql_exporter.go
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proxysql_exporter.go
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// Copyright 2016-2017 Percona LLC
//
// 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 main
import (
"flag"
"fmt"
"os"
_ "github.com/go-sql-driver/mysql"
"github.com/percona/exporter_shared"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/log"
"github.com/prometheus/common/version"
)
const (
program = "proxysql_exporter"
defaultDataSource = "stats:stats@tcp(localhost:6032)/"
)
var (
versionF = flag.Bool("version", false, "Print version information and exit.")
listenAddressF = flag.String("web.listen-address", ":42004", "Address to listen on for web interface and telemetry.")
telemetryPathF = flag.String("web.telemetry-path", "/metrics", "Path under which to expose metrics.")
mysqlStatusF = flag.Bool("collect.mysql_status", true, "Collect from stats_mysql_global (SHOW MYSQL STATUS).")
mysqlConnectionPoolF = flag.Bool("collect.mysql_connection_pool", true, "Collect from stats_mysql_connection_pool.")
mysqlConnectionListF = flag.Bool("collect.mysql_connection_list", true, "Collect connection list from stats_mysql_processlist.")
)
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "%s %s exports various ProxySQL metrics in Prometheus format.\n", os.Args[0], version.Version)
fmt.Fprintf(os.Stderr, "It uses DATA_SOURCE_NAME environment variable with following format: https://github.com/go-sql-driver/mysql#dsn-data-source-name\n")
fmt.Fprintf(os.Stderr, "Default value is %q.\n\n", defaultDataSource)
fmt.Fprintf(os.Stderr, "Usage: %s [flags]\n\n", os.Args[0])
fmt.Fprintf(os.Stderr, "Flags:\n")
flag.PrintDefaults()
}
flag.Parse()
if *versionF {
fmt.Println(version.Print(program))
os.Exit(0)
}
dsn := os.Getenv("DATA_SOURCE_NAME")
if dsn == "" {
dsn = defaultDataSource
}
log.Infof("Starting %s %s for %s", program, version.Version, dsn)
exporter := NewExporter(dsn, *mysqlStatusF, *mysqlConnectionPoolF, *mysqlConnectionListF)
prometheus.MustRegister(exporter)
exporter_shared.RunServer("ProxySQL", *listenAddressF, *telemetryPathF, promhttp.ContinueOnError)
}