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126 lines
3.6 KiB
Go
126 lines
3.6 KiB
Go
// Copyright 2020 Kentaro Hibino. All rights reserved.
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// Use of this source code is governed by a MIT license
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// that can be found in the LICENSE file.
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// Package base defines foundational types and constants used in asynq package.
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package base
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import (
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"fmt"
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"strings"
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"sync"
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"time"
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"github.com/rs/xid"
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)
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// DefaultQueueName is the queue name used if none are specified by user.
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const DefaultQueueName = "default"
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// Redis keys
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const (
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psPrefix = "asynq:ps:" // HASH
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AllProcesses = "asynq:ps" // ZSET
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processedPrefix = "asynq:processed:" // STRING - asynq:processed:<yyyy-mm-dd>
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failurePrefix = "asynq:failure:" // STRING - asynq:failure:<yyyy-mm-dd>
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QueuePrefix = "asynq:queues:" // LIST - asynq:queues:<qname>
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AllQueues = "asynq:queues" // SET
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DefaultQueue = QueuePrefix + DefaultQueueName // LIST
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ScheduledQueue = "asynq:scheduled" // ZSET
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RetryQueue = "asynq:retry" // ZSET
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DeadQueue = "asynq:dead" // ZSET
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InProgressQueue = "asynq:in_progress" // LIST
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)
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// QueueKey returns a redis key string for the given queue name.
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func QueueKey(qname string) string {
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return QueuePrefix + strings.ToLower(qname)
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}
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// ProcessedKey returns a redis key string for processed count
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// for the given day.
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func ProcessedKey(t time.Time) string {
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return processedPrefix + t.UTC().Format("2006-01-02")
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}
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// FailureKey returns a redis key string for failure count
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// for the given day.
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func FailureKey(t time.Time) string {
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return failurePrefix + t.UTC().Format("2006-01-02")
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}
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// ProcessInfoKey returns a redis key string for process info.
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func ProcessInfoKey(hostname string, pid int) string {
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return fmt.Sprintf("%s%s:%d", psPrefix, hostname, pid)
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}
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// TaskMessage is the internal representation of a task with additional metadata fields.
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// Serialized data of this type gets written to redis.
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type TaskMessage struct {
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// Type indicates the kind of the task to be performed.
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Type string
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// Payload holds data needed to process the task.
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Payload map[string]interface{}
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// ID is a unique identifier for each task.
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ID xid.ID
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// Queue is a name this message should be enqueued to.
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Queue string
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// Retry is the max number of retry for this task.
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Retry int
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// Retried is the number of times we've retried this task so far.
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Retried int
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// ErrorMsg holds the error message from the last failure.
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ErrorMsg string
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}
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// ProcessInfo holds information about running background worker process.
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type ProcessInfo struct {
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mu sync.Mutex
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Concurrency int
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Queues map[string]uint
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StrictPriority bool
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PID int
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Host string
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State string
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Started time.Time
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ActiveWorkerCount int
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}
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// NewProcessInfo returns a new instance of ProcessInfo.
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func NewProcessInfo(host string, pid, concurrency int, queues map[string]uint, strict bool) *ProcessInfo {
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return &ProcessInfo{
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Host: host,
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PID: pid,
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Concurrency: concurrency,
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Queues: queues,
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StrictPriority: strict,
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}
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}
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// SetState set the state field of the process info.
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func (p *ProcessInfo) SetState(state string) {
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p.mu.Lock()
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defer p.mu.Unlock()
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p.State = state
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}
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// SetStarted set the started field of the process info.
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func (p *ProcessInfo) SetStarted(t time.Time) {
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p.mu.Lock()
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defer p.mu.Unlock()
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p.Started = t
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}
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// IncrActiveWorkerCount increments active worker count by delta.
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func (p *ProcessInfo) IncrActiveWorkerCount(delta int) {
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p.mu.Lock()
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defer p.mu.Unlock()
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p.ActiveWorkerCount += delta
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}
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