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Multiple Queue improvements: LevelDB Wait on empty, shutdown empty shadow level queue, reduce goroutines etc (#15693)

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* move shutdownfns, terminatefns and hammerfns out of separate goroutines

Coalesce the shutdownfns etc into a list of functions that get run at shutdown
rather then have them run at goroutines blocked on selects.

This may help reduce the background select/poll load in certain
configurations.

* The LevelDB queues can actually wait on empty instead of polling

Slight refactor to cause leveldb queues to wait on empty instead of polling.

* Shutdown the shadow level queue once it is empty

* Remove bytefifo additional goroutine for readToChan as it can just be run in run

* Remove additional removeWorkers goroutine for workers

* Simplify the AtShutdown and AtTerminate functions and add Channel Flusher

* Add shutdown flusher to CUQ

* move persistable channel shutdown stuff to Shutdown Fn

* Ensure that UPCQ has the correct config

* handle shutdown during the flushing

* reduce risk of race between zeroBoost and addWorkers

* prevent double shutdown

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2021-05-15 15:22:26 +01:00 • committed by GitHub
parent 9f19c2b8cc
commit ba526ceffe
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 598 additions and 412 deletions
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20
modules/queue/queue_redis.go
View file

@ -6,7 +6,6 @@ package queue
import (
"context"
"fmt"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
@ -47,8 +46,6 @@ func NewRedisQueue(handle HandlerFunc, cfg, exemplar interface{}) (Queue, error)
return nil, err
}
byteFIFO.ctx = graceful.NewChannelContext(byteFIFOQueue.IsTerminated(), fmt.Errorf("queue has been terminated"))
queue := &RedisQueue{
ByteFIFOQueue: byteFIFOQueue,
}
@ -73,8 +70,8 @@ var _ ByteFIFO = &RedisByteFIFO{}
// RedisByteFIFO represents a ByteFIFO formed from a redisClient
type RedisByteFIFO struct {
ctx context.Context
client redisClient
client redisClient
queueName string
}
@ -89,7 +86,6 @@ func NewRedisByteFIFO(config RedisByteFIFOConfiguration) (*RedisByteFIFO, error)
fifo := &RedisByteFIFO{
queueName: config.QueueName,
}
fifo.ctx = graceful.GetManager().TerminateContext()
fifo.client = nosql.GetManager().GetRedisClient(config.ConnectionString)
if err := fifo.client.Ping(graceful.GetManager().ShutdownContext()).Err(); err != nil {
return nil, err
@ -98,18 +94,18 @@ func NewRedisByteFIFO(config RedisByteFIFOConfiguration) (*RedisByteFIFO, error)
}
// PushFunc pushes data to the end of the fifo and calls the callback if it is added
func (fifo *RedisByteFIFO) PushFunc(data []byte, fn func() error) error {
func (fifo *RedisByteFIFO) PushFunc(ctx context.Context, data []byte, fn func() error) error {
if fn != nil {
if err := fn(); err != nil {
return err
}
}
return fifo.client.RPush(fifo.ctx, fifo.queueName, data).Err()
return fifo.client.RPush(ctx, fifo.queueName, data).Err()
}
// Pop pops data from the start of the fifo
func (fifo *RedisByteFIFO) Pop() ([]byte, error) {
data, err := fifo.client.LPop(fifo.ctx, fifo.queueName).Bytes()
func (fifo *RedisByteFIFO) Pop(ctx context.Context) ([]byte, error) {
data, err := fifo.client.LPop(ctx, fifo.queueName).Bytes()
if err == nil || err == redis.Nil {
return data, nil
}
@ -122,8 +118,8 @@ func (fifo *RedisByteFIFO) Close() error {
}
// Len returns the length of the fifo
func (fifo *RedisByteFIFO) Len() int64 {
val, err := fifo.client.LLen(fifo.ctx, fifo.queueName).Result()
func (fifo *RedisByteFIFO) Len(ctx context.Context) int64 {
val, err := fifo.client.LLen(ctx, fifo.queueName).Result()
if err != nil {
log.Error("Error whilst getting length of redis queue %s: Error: %v", fifo.queueName, err)
return -1