109 lines
3 KiB
Go
109 lines
3 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
|
|
// license agreements. See the NOTICE file distributed with
|
|
// this work for additional information regarding copyright
|
|
// ownership. Elasticsearch B.V. licenses this file to you 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 mysql is Metricbeat module for MySQL server.
|
|
*/
|
|
package mysql
|
|
|
|
import (
|
|
"database/sql"
|
|
|
|
"github.com/elastic/beats/metricbeat/mb"
|
|
|
|
"github.com/go-sql-driver/mysql"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
func init() {
|
|
// Register the ModuleFactory function for the "mysql" module.
|
|
if err := mb.Registry.AddModule("mysql", NewModule); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
func NewModule(base mb.BaseModule) (mb.Module, error) {
|
|
// Validate that at least one host has been specified.
|
|
config := struct {
|
|
Hosts []string `config:"hosts" validate:"nonzero,required"`
|
|
}{}
|
|
if err := base.UnpackConfig(&config); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &base, nil
|
|
}
|
|
|
|
// ParseDSN creates a DSN (data source name) string by parsing the host.
|
|
// It validates the resulting DSN and returns an error if the DSN is invalid.
|
|
//
|
|
// Format: [username[:password]@][protocol[(address)]]/
|
|
// Example: root:test@tcp(127.0.0.1:3306)/
|
|
func ParseDSN(mod mb.Module, host string) (mb.HostData, error) {
|
|
c := struct {
|
|
Username string `config:"username"`
|
|
Password string `config:"password"`
|
|
}{}
|
|
if err := mod.UnpackConfig(&c); err != nil {
|
|
return mb.HostData{}, err
|
|
}
|
|
|
|
config, err := mysql.ParseDSN(host)
|
|
if err != nil {
|
|
return mb.HostData{}, errors.Wrapf(err, "error parsing mysql host")
|
|
}
|
|
|
|
if config.User == "" {
|
|
config.User = c.Username
|
|
}
|
|
|
|
if config.Passwd == "" {
|
|
config.Passwd = c.Password
|
|
}
|
|
|
|
// Add connection timeouts to the DSN.
|
|
if timeout := mod.Config().Timeout; timeout > 0 {
|
|
config.Timeout = timeout
|
|
config.ReadTimeout = timeout
|
|
config.WriteTimeout = timeout
|
|
}
|
|
|
|
noCredentialsConfig := *config
|
|
noCredentialsConfig.User = ""
|
|
noCredentialsConfig.Passwd = ""
|
|
|
|
return mb.HostData{
|
|
URI: config.FormatDSN(),
|
|
SanitizedURI: noCredentialsConfig.FormatDSN(),
|
|
Host: config.Addr,
|
|
User: config.User,
|
|
Password: config.Passwd,
|
|
}, nil
|
|
}
|
|
|
|
// NewDB returns a new mysql database handle. The dsn value (data source name)
|
|
// must be valid, otherwise an error will be returned.
|
|
//
|
|
// DSN Format: [username[:password]@][protocol[(address)]]/
|
|
func NewDB(dsn string) (*sql.DB, error) {
|
|
db, err := sql.Open("mysql", dsn)
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "sql open failed")
|
|
}
|
|
return db, nil
|
|
}
|