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// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package queue
import (
"encoding/json"
"fmt"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
)
func validType(t string) (Type, error) {
if len(t) == 0 {
return PersistableChannelQueueType, nil
}
for _, typ := range RegisteredTypes() {
if t == string(typ) {
return typ, nil
}
}
return PersistableChannelQueueType, fmt.Errorf("Unknown queue type: %s defaulting to %s", t, string(PersistableChannelQueueType))
}
func getQueueSettings(name string) (setting.QueueSettings, []byte) {
q := setting.GetQueueSettings(name)
cfg, err := json.Marshal(q)
if err != nil {
log.Error("Unable to marshall generic options: %v Error: %v", q, err)
log.Error("Unable to create queue for %s", name, err)
return q, []byte{}
}
return q, cfg
}
// CreateQueue for name with provided handler and exemplar
func CreateQueue(name string, handle HandlerFunc, exemplar interface{}) Queue {
q, cfg := getQueueSettings(name)
if len(cfg) == 0 {
return nil
}
typ, err := validType(q.Type)
if err != nil {
log.Error("Invalid type %s provided for queue named %s defaulting to %s", q.Type, name, string(typ))
}
returnable, err := NewQueue(typ, handle, cfg, exemplar)
if q.WrapIfNecessary && err != nil {
log.Warn("Unable to create queue for %s: %v", name, err)
log.Warn("Attempting to create wrapped queue")
returnable, err = NewQueue(WrappedQueueType, handle, WrappedQueueConfiguration{
Underlying: typ,
Timeout: q.Timeout,
MaxAttempts: q.MaxAttempts,
Config: cfg,
QueueLength: q.QueueLength,
Name: name,
}, exemplar)
}
if err != nil {
log.Error("Unable to create queue for %s: %v", name, err)
return nil
}
return returnable
}
// CreateUniqueQueue for name with provided handler and exemplar
func CreateUniqueQueue(name string, handle HandlerFunc, exemplar interface{}) UniqueQueue {
q, cfg := getQueueSettings(name)
if len(cfg) == 0 {
return nil
}
if len(q.Type) > 0 && q.Type != "dummy" && !strings.HasPrefix(q.Type, "unique-") {
q.Type = "unique-" + q.Type
}
typ, err := validType(q.Type)
if err != nil || typ == PersistableChannelQueueType {
typ = PersistableChannelUniqueQueueType
if err != nil {
log.Error("Invalid type %s provided for queue named %s defaulting to %s", q.Type, name, string(typ))
}
}
returnable, err := NewQueue(typ, handle, cfg, exemplar)
if q.WrapIfNecessary && err != nil {
log.Warn("Unable to create unique queue for %s: %v", name, err)
log.Warn("Attempting to create wrapped queue")
returnable, err = NewQueue(WrappedUniqueQueueType, handle, WrappedUniqueQueueConfiguration{
Underlying: typ,
Timeout: q.Timeout,
MaxAttempts: q.MaxAttempts,
Config: cfg,
QueueLength: q.QueueLength,
}, exemplar)
}
if err != nil {
log.Error("Unable to create unique queue for %s: %v", name, err)
return nil
}
return returnable.(UniqueQueue)
}
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