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Merge pull request #117 from debeando/mysql-top
feat - mysql top
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| package top | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/debeando/go-common/aws/rds" | ||
| "github.com/debeando/go-common/cast" | ||
| "github.com/debeando/go-common/log" | ||
| "github.com/debeando/go-common/mysql" | ||
| "github.com/debeando/go-common/table" | ||
| "github.com/debeando/go-common/terminal" | ||
|
|
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| "github.com/spf13/cobra" | ||
| ) | ||
|
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||
| var delay int | ||
| var dsn string | ||
| var host string | ||
| var password string | ||
| var port int64 | ||
| var user string | ||
|
|
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| const SQL_PROCESSLIST = `SELECT id, user, SUBSTRING_INDEX(host, ':', 1) AS host, db, command, time, state, info | ||
| FROM information_schema.processlist | ||
| WHERE id <> connection_id() | ||
| AND length(info) > 0 | ||
| AND command NOT IN ('Daemon', 'Sleep') | ||
| AND user NOT IN ('rdsadmin');` | ||
|
|
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| func NewCommand() *cobra.Command { | ||
| defer terminal.CursorShow() | ||
|
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| var cmd = &cobra.Command{ | ||
| Use: "top [IDENTIFIER] |", | ||
| Short: "Display MySQL server performance info like 'top'.", | ||
| Example: ` | ||
| # Connect to RDS: | ||
| zenit mysql top test-rds --password=<password> | ||
| # Connect to Host: | ||
| zenit mysql top --host=127.0.0.1 --user=root --password=<password> | ||
| # Refresh every one second: | ||
| zenit mysql top --host=127.0.0.1 --user=root --password=<password> --delay=1`, | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| if len(args) == 0 && len(password) == 0 { | ||
| cmd.Help() | ||
| return | ||
| } else if len(host) == 0 && len(password) == 0 { | ||
| cmd.Help() | ||
| return | ||
| } | ||
|
|
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| if len(args) == 1 && len(args[0]) > 0 { | ||
| r := rds.RDS{} | ||
|
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| if err := r.Init(); err != nil { | ||
| log.Error(err.Error()) | ||
| return | ||
| } | ||
|
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| instance, err := r.Describe(args[0]) | ||
| if err != nil { | ||
| log.Error(err.Error()) | ||
| return | ||
| } | ||
|
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| host = instance.Endpoint | ||
| port = instance.Port | ||
| } | ||
|
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| fmt.Printf("Connecting to %s:%d...\n", host, port) | ||
|
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| dsn = fmt.Sprintf("%s:%s@tcp(%s:%d)/information_schema?timeout=3s", user, password, host, port) | ||
|
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| m := mysql.New("top", dsn) | ||
| if err := m.Connect(); err != nil { | ||
| log.Error(err.Error()) | ||
| return | ||
| } | ||
|
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| terminal.Refresh(delay, func() bool { | ||
| processlist, _ := m.Query(SQL_PROCESSLIST) | ||
|
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| tbl := table.New() | ||
| tbl.Title("Process List") | ||
| tbl.Column(0, table.Column{Name: "ID", Truncate: 10, Width: 10}) | ||
| tbl.Column(1, table.Column{Name: "User", Truncate: 10, Width: 10}) | ||
| tbl.Column(2, table.Column{Name: "Host", Truncate: 16, Width: 16}) | ||
| tbl.Column(3, table.Column{Name: "Time", Truncate: 4, Width: 4}) | ||
| tbl.Column(4, table.Column{Name: "Query", Truncate: 50, Width: 50}) | ||
| for _, row := range processlist { | ||
| tbl.Add(row["id"], row["user"], row["host"], cast.StringToInt(row["time"]), row["info"]) | ||
| } | ||
| tbl.SortBy(3).Print() | ||
|
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| return true | ||
| }) | ||
| }, | ||
| } | ||
|
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| cmd.Flags().IntVar(&delay, "delay", 3, "How long between display refreshes.") | ||
| cmd.Flags().StringVar(&host, "host", "127.0.0.1", "Connect to host.") | ||
| cmd.Flags().StringVar(&password, "password", "", "Password to use when connecting to server.") | ||
| cmd.Flags().Int64Var(&port, "port", 3306, "Port number to use for connection.") | ||
| cmd.Flags().StringVar(&user, "user", "root", "User for login if not current user.") | ||
|
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||
| return cmd | ||
| } |
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