/
clear.go
96 lines (86 loc) · 2.69 KB
/
clear.go
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// Copyright © 2019 Chris Monson <shiblon@gmail.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"context"
"log"
"time"
"github.com/google/uuid"
"github.com/shiblon/entroq"
"github.com/spf13/cobra"
)
var (
flagClearQueue string
flagClearForce bool
)
func init() {
rootCmd.AddCommand(clearCmd)
clearCmd.Flags().StringVarP(&flagClearQueue, "queue", "q", "", "Task Queue to clear.")
clearCmd.MarkFlagRequired("queue")
clearCmd.Flags().BoolVarP(&flagClearForce, "force", "f", false, "CAREFUL: forces deletion even of claimed tasks. Spoofs claimant to delete even if task is claimed.")
}
// clearCmd represents the clear command
var clearCmd = &cobra.Command{
Use: "clear",
Short: "Remove all tasks from a queue.",
Run: func(cmd *cobra.Command, args []string) {
ctx := context.Background()
if flagClearForce {
for {
empty, err := eq.QueuesEmpty(ctx, entroq.MatchExact(flagClearQueue))
if err != nil {
log.Fatalf("Failed to check queue emptiness %q: %v", flagClearQueue, err)
}
if empty {
break
}
tasks, err := eq.Tasks(ctx, flagClearQueue, entroq.LimitTasks(100), entroq.OmitValues())
if err != nil {
log.Fatalf("Failed to get tasks from %q: %v", flagClearQueue, err)
}
byClaimant := make(map[uuid.UUID][]entroq.ModifyArg)
for _, t := range tasks {
byClaimant[t.Claimant] = append(byClaimant[t.Claimant], t.AsDeletion())
}
for cid, args := range byClaimant {
forceArgs := append(args, entroq.ModifyAs(cid))
if _, _, err := eq.Modify(ctx, forceArgs...); err != nil {
log.Fatalf("Force clear failed: %v", err)
}
}
}
return
}
for {
empty, err := eq.QueuesEmpty(ctx, entroq.MatchExact(flagClearQueue))
if err != nil {
log.Fatalf("Error getting empty status for %q: %v", flagClearQueue, err)
}
if empty {
break
}
tctx, _ := context.WithTimeout(ctx, 10*time.Second)
task, err := eq.Claim(tctx, entroq.From(flagClearQueue))
if err != nil {
if entroq.IsTimeout(err) {
continue
}
log.Fatalf("Error claiming: %v", err)
}
if _, _, err := eq.Modify(ctx, task.AsDeletion()); err != nil {
log.Fatalf("Error deleting: %v", err)
}
}
},
}