forgejo/modules/queue/queue_channel.go
zeripath c01221e70f
Queue: Make WorkerPools and Queues flushable (#10001)
* Make WorkerPools and Queues flushable

Adds Flush methods to Queues and the WorkerPool
Further abstracts the WorkerPool
Adds a final step to Flush the queues in the defer from PrintCurrentTest
Fixes an issue with Settings inheritance in queues

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Change to for loop

* Add IsEmpty and begin just making the queues composed WorkerPools

* subsume workerpool into the queues and create a flushable interface

* Add manager command

* Move flushall to queue.Manager and add to testlogger

* As per @guillep2k

* as per @guillep2k

* Just make queues all implement flushable and clean up the wrapped queue flushes

* cope with no timeout

Co-authored-by: Lauris BH <lauris@nix.lv>
2020-01-28 20:01:06 -05:00

85 lines
2.2 KiB
Go

// 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 (
"context"
"fmt"
"code.gitea.io/gitea/modules/log"
)
// ChannelQueueType is the type for channel queue
const ChannelQueueType Type = "channel"
// ChannelQueueConfiguration is the configuration for a ChannelQueue
type ChannelQueueConfiguration struct {
WorkerPoolConfiguration
Workers int
Name string
}
// ChannelQueue implements Queue
//
// A channel queue is not persistable and does not shutdown or terminate cleanly
// It is basically a very thin wrapper around a WorkerPool
type ChannelQueue struct {
*WorkerPool
exemplar interface{}
workers int
name string
}
// NewChannelQueue creates a memory channel queue
func NewChannelQueue(handle HandlerFunc, cfg, exemplar interface{}) (Queue, error) {
configInterface, err := toConfig(ChannelQueueConfiguration{}, cfg)
if err != nil {
return nil, err
}
config := configInterface.(ChannelQueueConfiguration)
if config.BatchLength == 0 {
config.BatchLength = 1
}
queue := &ChannelQueue{
WorkerPool: NewWorkerPool(handle, config.WorkerPoolConfiguration),
exemplar: exemplar,
workers: config.Workers,
name: config.Name,
}
queue.qid = GetManager().Add(queue, ChannelQueueType, config, exemplar)
return queue, nil
}
// Run starts to run the queue
func (c *ChannelQueue) Run(atShutdown, atTerminate func(context.Context, func())) {
atShutdown(context.Background(), func() {
log.Warn("ChannelQueue: %s is not shutdownable!", c.name)
})
atTerminate(context.Background(), func() {
log.Warn("ChannelQueue: %s is not terminatable!", c.name)
})
log.Debug("ChannelQueue: %s Starting", c.name)
go func() {
_ = c.AddWorkers(c.workers, 0)
}()
}
// Push will push data into the queue
func (c *ChannelQueue) Push(data Data) error {
if !assignableTo(data, c.exemplar) {
return fmt.Errorf("Unable to assign data: %v to same type as exemplar: %v in queue: %s", data, c.exemplar, c.name)
}
c.WorkerPool.Push(data)
return nil
}
// Name returns the name of this queue
func (c *ChannelQueue) Name() string {
return c.name
}
func init() {
queuesMap[ChannelQueueType] = NewChannelQueue
}