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asynq/internal/base/base.go
2020-01-16 21:13:34 -08:00

72 lines
2.2 KiB
Go

// Copyright 2020 Kentaro Hibino. All rights reserved.
// Use of this source code is governed by a MIT license
// that can be found in the LICENSE file.
// Package base defines foundational types and constants used in asynq package.
package base
import (
"strings"
"time"
"github.com/rs/xid"
)
// DefaultQueueName is the queue name used if none are specified by user.
const DefaultQueueName = "default"
// Redis keys
const (
processedPrefix = "asynq:processed:" // STRING - asynq:processed:<yyyy-mm-dd>
failurePrefix = "asynq:failure:" // STRING - asynq:failure:<yyyy-mm-dd>
QueuePrefix = "asynq:queues:" // LIST - asynq:queues:<qname>
AllQueues = "asynq:queues" // SET
DefaultQueue = QueuePrefix + DefaultQueueName // LIST
ScheduledQueue = "asynq:scheduled" // ZSET
RetryQueue = "asynq:retry" // ZSET
DeadQueue = "asynq:dead" // ZSET
InProgressQueue = "asynq:in_progress" // LIST
)
// QueueKey returns a redis key string for the given queue name.
func QueueKey(qname string) string {
return QueuePrefix + strings.ToLower(qname)
}
// ProcessedKey returns a redis key string for processed count
// for the given day.
func ProcessedKey(t time.Time) string {
return processedPrefix + t.UTC().Format("2006-01-02")
}
// FailureKey returns a redis key string for failure count
// for the given day.
func FailureKey(t time.Time) string {
return failurePrefix + t.UTC().Format("2006-01-02")
}
// TaskMessage is the internal representation of a task with additional metadata fields.
// Serialized data of this type gets written to redis.
type TaskMessage struct {
// Type indicates the kind of the task to be performed.
Type string
// Payload holds data needed to process the task.
Payload map[string]interface{}
// ID is a unique identifier for each task.
ID xid.ID
// Queue is a name this message should be enqueued to.
Queue string
// Retry is the max number of retry for this task.
Retry int
// Retried is the number of times we've retried this task so far.
Retried int
// ErrorMsg holds the error message from the last failure.
ErrorMsg string
}