7958994ae2
* initial repair queue diag tool development * fixes linter warnings * code review updates
63 lines
1.7 KiB
Go
63 lines
1.7 KiB
Go
// Copyright (C) 2018 Storj Labs, Inc.
|
|
// See LICENSE for copying information.
|
|
|
|
package redis
|
|
|
|
import (
|
|
"storj.io/storj/storage"
|
|
)
|
|
|
|
// Queue is the aliased entrypoint into Redis
|
|
type Queue Client
|
|
|
|
const queueKey = "queue"
|
|
|
|
// NewQueue returns a configured Client instance, verifying a successful connection to redis
|
|
func NewQueue(address, password string, db int) (*Queue, error) {
|
|
queue, err := NewClient(address, password, db)
|
|
return (*Queue)(queue), err
|
|
}
|
|
|
|
// NewQueueFrom returns a configured Client instance from a redis address, verifying a successful connection to redis
|
|
func NewQueueFrom(address string) (*Queue, error) {
|
|
queue, err := NewClientFrom(address)
|
|
return (*Queue)(queue), err
|
|
}
|
|
|
|
// Close closes a redis client
|
|
func (client *Queue) Close() error {
|
|
return client.db.Close()
|
|
}
|
|
|
|
//Enqueue add a FIFO element, for the storage.Queue interface
|
|
func (client *Queue) Enqueue(value storage.Value) error {
|
|
err := client.db.LPush(queueKey, []byte(value)).Err()
|
|
if err != nil {
|
|
return Error.New("enqueue error: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
//Dequeue removes a FIFO element, for the storage.Queue interface
|
|
func (client *Queue) Dequeue() (storage.Value, error) {
|
|
out, err := client.db.RPop(queueKey).Bytes()
|
|
if err != nil {
|
|
return nil, Error.New("dequeue error: %v", err)
|
|
}
|
|
return storage.Value(out), nil
|
|
}
|
|
|
|
// Peekqueue returns upto 1000 entries in the queue without removing
|
|
func (client *Queue) Peekqueue(limit int) ([]storage.Value, error) {
|
|
cmd := client.db.LRange(queueKey, 0, int64(limit))
|
|
items, err := cmd.Result()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
result := make([]storage.Value, 0)
|
|
for _, v := range items {
|
|
result = append(result, storage.Value([]byte(v)))
|
|
}
|
|
return result, err
|
|
}
|