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|
package workers
import (
"fmt"
"net/rpc"
"os"
"os/signal"
"syscall"
"time"
"github.com/roadrunner-server/api/v4/plugins/v4/jobs"
internalRpc "github.com/roadrunner-server/roadrunner/v2024/internal/rpc"
tm "github.com/buger/goterm"
"github.com/fatih/color"
"github.com/roadrunner-server/errors"
"github.com/roadrunner-server/informer/v5"
"github.com/spf13/cobra"
)
// NewCommand creates `workers` command.
func NewCommand(cfgFile *string, override *[]string) *cobra.Command { //nolint:funlen
// interactive workers updates
var interactive bool
cmd := &cobra.Command{
Use: "workers",
Short: "Show information about active RoadRunner workers",
RunE: func(_ *cobra.Command, args []string) error {
const (
op = errors.Op("handle_workers_command")
informerList = "informer.List"
)
if cfgFile == nil {
return errors.E(op, errors.Str("no configuration file provided"))
}
client, err := internalRpc.NewClient(*cfgFile, *override)
if err != nil {
return err
}
defer func() { _ = client.Close() }()
plugins := args // by default, we expect a plugin list from user
if len(plugins) == 0 { // but if nothing was passed - request all informers list
if err = client.Call(informerList, true, &plugins); err != nil {
return fmt.Errorf("failed to get list of plugins: %w", err)
}
}
if !interactive {
showWorkers(plugins, client)
return nil
}
oss := make(chan os.Signal, 1)
signal.Notify(oss, os.Interrupt, syscall.SIGTERM, syscall.SIGINT)
tm.Clear()
tt := time.NewTicker(time.Second)
defer tt.Stop()
for {
select {
case <-oss:
return nil
case <-tt.C:
tm.MoveCursor(1, 1)
tm.Flush()
showWorkers(plugins, client)
}
}
},
}
cmd.Flags().BoolVarP(
&interactive,
"interactive",
"i",
false,
"render interactive workers table",
)
return cmd
}
func showWorkers(plugins []string, client *rpc.Client) {
const (
informerWorkers = "informer.Workers"
informerJobs = "informer.Jobs"
// this is only one exception to Render the workers, service plugin has the same workers as other plugins,
// but they are RAW processes and needs to be handled in a different way. We don't need a special RPC call, but
// need a special render method.
servicePluginName = "service"
)
for _, plugin := range plugins {
list := &informer.WorkerList{}
if err := client.Call(informerWorkers, plugin, &list); err != nil {
// this is a special case, when we can't get workers list, we need to render an error message
WorkerTable(os.Stdout, list.Workers, fmt.Errorf("failed to receive information about %s plugin: %w", plugin, err)).Render()
continue
}
if len(list.Workers) == 0 {
continue
}
if plugin == servicePluginName {
fmt.Printf("Workers of [%s]:\n", color.HiYellowString(plugin))
ServiceWorkerTable(os.Stdout, list.Workers).Render()
continue
}
fmt.Printf("Workers of [%s]:\n", color.HiYellowString(plugin))
WorkerTable(os.Stdout, list.Workers, nil).Render()
}
for _, plugin := range plugins {
var jst []*jobs.State
if err := client.Call(informerJobs, plugin, &jst); err != nil {
JobsTable(os.Stdout, jst, fmt.Errorf("failed to receive information about %s plugin: %w", plugin, err)).Render()
continue
}
// eq to nil
if len(jst) == 0 {
continue
}
fmt.Printf("Jobs of [%s]:\n", color.HiYellowString(plugin))
JobsTable(os.Stdout, jst, nil).Render()
}
}
|
