inital code for snapshoting on cron

main.go

@@ -0,0 +1,69 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"time"
+
+	"git.ohea.xyz/spaceman/snapzd/configuration"
+	"github.com/go-co-op/gocron"
+	"github.com/mistifyio/go-zfs"
+	"go.uber.org/zap"
+)
+
+func CreateSnapshotJob(job_info *configuration.JobConfig) func() {
+	return func() {
+		fs, err := zfs.Filesystems(job_info.Dataset)
+		if err != nil {
+			zap.S().Errorf("failed to start job %v: %v", job_info.Name, err)
+			return
+		}
+		if len(fs) != 1 {
+			zap.S().Errorf("dataset path returned %v datasets. Expected 1", len(fs))
+			return
+		}
+		to_snapshot := fs[0]
+		snaptime := time.Now()
+		snapname := fmt.Sprintf("snapz.%s.%s", job_info.Name, snaptime.Format(time.RFC3339))
+	
+
+		snapshot, err := to_snapshot.Snapshot(snapname, job_info.Recursive)
+		if err != nil {
+			zap.S().Errorf("failed to create snapshot: %v: ", snapname, err)
+			return
+		}
+		zap.S().Infof("created snapshot: %v", snapshot.Name)
+	}
+}
+
+func configureLogging() error {
+	logger, err := zap.NewDevelopment()
+	if err != nil {
+		return err
+	}
+	zap.ReplaceGlobals(logger)
+	return nil
+}
+
+func main() {
+	err := configureLogging()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "failed to initalize logging, can't continue: %v", err)
+		return
+	}
+	zap.S().Info("begining conifg scan")
+	jobs, err := configuration.GetJobs()
+	if err != nil {
+		zap.S().Fatalf("failed to read configuration: %v", err)
+	}
+	
+	scheduler := gocron.NewScheduler(time.Local)
+
+	for _, job := range jobs {
+		zap.S().Infof("discovered job: %v", job.Name)
+		zap.S().Infof("adding job. Name: %v, Dataset: %v, Cron: %v", job.Name, job.Dataset, job.Cron)
+		scheduler.Cron(job.Cron).SingletonMode().Tag(job.Name).Do(CreateSnapshotJob(&job))
+	}
+
+	scheduler.StartBlocking()
+}