WIP: Switch to new config format.

Don't use jobrun for daemon, just call JobDo() once, the job must
organize stuff itself.

Sacrifice all the oneshot commands, they will be reintroduced as
client-calls to the daemon.

cmd/autosnap.go

@@ -1,85 +0,0 @@
-package cmd
-
-import (
-	"fmt"
-	"os"
-	"sync"
-	"time"
-
-	"github.com/spf13/cobra"
-	"github.com/zrepl/zrepl/jobrun"
-	"github.com/zrepl/zrepl/zfs"
-)
-
-var AutosnapCmd = &cobra.Command{
-	Use:   "autosnap",
-	Short: "perform automatic snapshotting",
-	Run:   cmdAutosnap,
-}
-
-func init() {
-	RootCmd.AddCommand(AutosnapCmd)
-}
-
-func cmdAutosnap(cmd *cobra.Command, args []string) {
-
-	var wg sync.WaitGroup
-
-	r := jobrun.NewJobRunner(log)
-	wg.Add(1)
-	go func() {
-		r.Run()
-		wg.Done()
-	}()
-
-	if len(args) < 1 {
-		log.Printf("must specify exactly one job as positional argument")
-		os.Exit(1)
-	}
-
-	snap, ok := conf.Autosnaps[args[0]]
-	if !ok {
-		log.Printf("could not find autosnap job: %s", args[0])
-		os.Exit(1)
-	}
-
-	r.AddJob(snap)
-
-	wg.Wait()
-
-}
-
-type AutosnapContext struct {
-	Autosnap *Autosnap
-}
-
-func doAutosnap(ctx AutosnapContext, log Logger) (err error) {
-
-	snap := ctx.Autosnap
-
-	filesystems, err := zfs.ZFSListMapping(snap.DatasetFilter)
-	if err != nil {
-		return fmt.Errorf("cannot filter datasets: %s", err)
-	}
-
-	suffix := time.Now().In(time.UTC).Format("20060102_150405_000")
-	snapname := fmt.Sprintf("%s%s", snap.Prefix, suffix)
-
-	hadError := false
-
-	for _, fs := range filesystems { // optimization: use recursive snapshots / channel programs here
-		log.Printf("snapshotting filesystem %s@%s", fs.ToString(), snapname)
-		err := zfs.ZFSSnapshot(fs, snapname, false)
-		if err != nil {
-			log.Printf("error snapshotting %s: %s", fs, err)
-			hadError = true
-		}
-	}
-
-	if hadError {
-		err = fmt.Errorf("errors occurred during autosnap, check logs for details")
-	}
-
-	return
-
-}