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// Copyright (c) 2018 SpiralScout
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package http
import (
"errors"
tm "github.com/buger/goterm"
"github.com/dustin/go-humanize"
"github.com/olekukonko/tablewriter"
"github.com/shirou/gopsutil/process"
"github.com/spf13/cobra"
rr "github.com/spiral/roadrunner/cmd/rr/cmd"
"github.com/spiral/roadrunner/cmd/rr/utils"
"github.com/spiral/roadrunner/service"
"github.com/spiral/roadrunner/service/http"
rrpc "github.com/spiral/roadrunner/service/rpc"
"net/rpc"
"os"
"os/signal"
"strconv"
"syscall"
"time"
)
var (
interactive bool
stopSignal = make(chan os.Signal, 1)
)
func init() {
workersCommand := &cobra.Command{
Use: "http:workers",
Short: "List workers associated with RoadRunner HTTP service",
RunE: workersHandler,
}
workersCommand.Flags().BoolVarP(
&interactive,
"interactive",
"i",
false,
"render interactive workers table",
)
rr.CLI.AddCommand(workersCommand)
signal.Notify(stopSignal, syscall.SIGTERM)
signal.Notify(stopSignal, syscall.SIGINT)
}
func workersHandler(cmd *cobra.Command, args []string) (err error) {
defer func() {
if r, ok := recover().(error); ok {
err = r
}
}()
svc, st := rr.Container.Get(rrpc.ID)
if st < service.StatusOK {
return errors.New("RPC service is not configured")
}
client, err := svc.(*rrpc.Service).Client()
if err != nil {
return err
}
defer client.Close()
if !interactive {
showWorkers(client)
return nil
}
tm.Clear()
for {
select {
case <-stopSignal:
return nil
case <-time.NewTicker(time.Millisecond * 500).C:
tm.MoveCursor(1, 1)
showWorkers(client)
tm.Flush()
}
}
}
func showWorkers(client *rpc.Client) {
var r http.WorkerList
if err := client.Call("http.Workers", true, &r); err != nil {
panic(err)
}
tw := tablewriter.NewWriter(os.Stdout)
tw.SetHeader([]string{"PID", "Status", "Execs", "Memory", "Created"})
tw.SetColMinWidth(0, 7)
tw.SetColMinWidth(1, 9)
tw.SetColMinWidth(2, 7)
tw.SetColMinWidth(3, 7)
tw.SetColMinWidth(4, 18)
for _, w := range r.Workers {
tw.Append([]string{
strconv.Itoa(w.Pid),
renderStatus(w.Status),
renderJobs(w.NumJobs),
renderMemory(w.Pid),
renderAlive(time.Unix(0, w.Created)),
})
}
tw.Render()
}
func renderStatus(status string) string {
switch status {
case "inactive":
return utils.Sprintf("<yellow>inactive</reset>")
case "ready":
return utils.Sprintf("<cyan>ready</reset>")
case "working":
return utils.Sprintf("<green>working</reset>")
case "stopped":
return utils.Sprintf("<red>stopped</reset>")
case "errored":
return utils.Sprintf("<red>errored</reset>")
}
return status
}
func renderJobs(number int64) string {
return humanize.Comma(int64(number))
}
func renderAlive(t time.Time) string {
return humanize.RelTime(t, time.Now(), "ago", "")
}
func renderMemory(pid int) string {
p, _ := process.NewProcess(int32(pid))
i, err := p.MemoryInfo()
if err != nil {
return err.Error()
}
return humanize.Bytes(i.RSS)
}
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