+// Copyright (C) The Arvados Authors. All rights reserved.
+//
+// SPDX-License-Identifier: AGPL-3.0
+
package main
// Dispatcher service for Crunch that runs containers locally.
import (
+ "context"
"flag"
- "git.curoverse.com/arvados.git/sdk/go/arvados"
- "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
- "git.curoverse.com/arvados.git/sdk/go/dispatch"
- "log"
+ "fmt"
"os"
"os/exec"
+ "os/signal"
"sync"
+ "syscall"
"time"
+
+ "git.curoverse.com/arvados.git/sdk/go/arvados"
+ "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
+ "git.curoverse.com/arvados.git/sdk/go/dispatch"
+ "github.com/Sirupsen/logrus"
)
+var version = "dev"
+
func main() {
err := doMain()
if err != nil {
- log.Fatalf("%q", err)
+ logrus.Fatalf("%q", err)
}
}
)
func doMain() error {
+ logger := logrus.StandardLogger()
+ if os.Getenv("DEBUG") != "" {
+ logger.SetLevel(logrus.DebugLevel)
+ }
+ logger.Formatter = &logrus.JSONFormatter{
+ TimestampFormat: "2006-01-02T15:04:05.000000000Z07:00",
+ }
+
flags := flag.NewFlagSet("crunch-dispatch-local", flag.ExitOnError)
pollInterval := flags.Int(
"/usr/bin/crunch-run",
"Crunch command to run container")
+ getVersion := flags.Bool(
+ "version",
+ false,
+ "Print version information and exit.")
+
// Parse args; omit the first arg which is the command name
flags.Parse(os.Args[1:])
+ // Print version information if requested
+ if *getVersion {
+ fmt.Printf("crunch-dispatch-local %s\n", version)
+ return nil
+ }
+
+ logger.Printf("crunch-dispatch-local %s started", version)
+
runningCmds = make(map[string]*exec.Cmd)
arv, err := arvadosclient.MakeArvadosClient()
if err != nil {
- log.Printf("Error making Arvados client: %v", err)
+ logger.Errorf("error making Arvados client: %v", err)
return err
}
arv.Retries = 25
dispatcher := dispatch.Dispatcher{
- Arv: arv,
- RunContainer: run,
- PollInterval: time.Duration(*pollInterval) * time.Second,
- DoneProcessing: make(chan struct{})}
+ Logger: logger,
+ Arv: arv,
+ RunContainer: run,
+ PollPeriod: time.Duration(*pollInterval) * time.Second,
+ }
- err = dispatcher.RunDispatcher()
+ ctx, cancel := context.WithCancel(context.Background())
+ err = dispatcher.Run(ctx)
if err != nil {
return err
}
+ c := make(chan os.Signal, 1)
+ signal.Notify(c, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT)
+ sig := <-c
+ logger.Printf("Received %s, shutting down", sig)
+ signal.Stop(c)
+
+ cancel()
+
runningCmdsMutex.Lock()
// Finished dispatching; interrupt any crunch jobs that are still running
for _, cmd := range runningCmds {
// crunch-run terminates, mark the container as Cancelled.
func run(dispatcher *dispatch.Dispatcher,
container arvados.Container,
- status chan arvados.Container) {
+ status <-chan arvados.Container) {
uuid := container.UUID
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stderr
- log.Printf("Starting container %v", uuid)
+ dispatcher.Logger.Printf("starting container %v", uuid)
// Add this crunch job to the list of runningCmds only if we
// succeed in starting crunch-run.
runningCmdsMutex.Lock()
if err := startCmd(container, cmd); err != nil {
runningCmdsMutex.Unlock()
- log.Printf("Error starting %v for %v: %q", *crunchRunCommand, uuid, err)
+ dispatcher.Logger.Warnf("error starting %q for %s: %s", *crunchRunCommand, uuid, err)
dispatcher.UpdateState(uuid, dispatch.Cancelled)
} else {
runningCmds[uuid] = cmd
go func() {
if _, err := cmd.Process.Wait(); err != nil {
- log.Printf("Error while waiting for crunch job to finish for %v: %q", uuid, err)
+ dispatcher.Logger.Warnf("error while waiting for crunch job to finish for %v: %q", uuid, err)
}
- log.Printf("sending done")
+ dispatcher.Logger.Debugf("sending done")
done <- struct{}{}
}()
case c := <-status:
// Interrupt the child process if priority changes to 0
if (c.State == dispatch.Locked || c.State == dispatch.Running) && c.Priority == 0 {
- log.Printf("Sending SIGINT to pid %d to cancel container %v", cmd.Process.Pid, uuid)
+ dispatcher.Logger.Printf("sending SIGINT to pid %d to cancel container %v", cmd.Process.Pid, uuid)
cmd.Process.Signal(os.Interrupt)
}
}
}
close(done)
- log.Printf("Finished container run for %v", uuid)
+ dispatcher.Logger.Printf("finished container run for %v", uuid)
// Remove the crunch job from runningCmds
runningCmdsMutex.Lock()
// If the container is not finalized, then change it to "Cancelled".
err := dispatcher.Arv.Get("containers", uuid, nil, &container)
if err != nil {
- log.Printf("Error getting final container state: %v", err)
+ dispatcher.Logger.Warnf("error getting final container state: %v", err)
}
- if container.LockedByUUID == dispatcher.Auth.UUID &&
- (container.State == dispatch.Locked || container.State == dispatch.Running) {
- log.Printf("After %s process termination, container state for %v is %q. Updating it to %q",
- *crunchRunCommand, container.State, uuid, dispatch.Cancelled)
+ if container.State == dispatch.Locked || container.State == dispatch.Running {
+ dispatcher.Logger.Warnf("after %q process termination, container state for %v is %q; updating it to %q",
+ *crunchRunCommand, uuid, container.State, dispatch.Cancelled)
dispatcher.UpdateState(uuid, dispatch.Cancelled)
}
// drain any subsequent status changes
- for _ = range status {
+ for range status {
}
- log.Printf("Finalized container %v", uuid)
+ dispatcher.Logger.Printf("finalized container %v", uuid)
}
projects / arvados.git / blobdiff