forked from gitea/gitea
138 lines
3.8 KiB
Go
138 lines
3.8 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package queue
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import (
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"context"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/nosql"
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"github.com/go-redis/redis/v8"
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)
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// RedisQueueType is the type for redis queue
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const RedisQueueType Type = "redis"
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// RedisQueueConfiguration is the configuration for the redis queue
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type RedisQueueConfiguration struct {
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ByteFIFOQueueConfiguration
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RedisByteFIFOConfiguration
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}
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// RedisQueue redis queue
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type RedisQueue struct {
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*ByteFIFOQueue
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}
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// NewRedisQueue creates single redis or cluster redis queue
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func NewRedisQueue(handle HandlerFunc, cfg, exemplar interface{}) (Queue, error) {
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configInterface, err := toConfig(RedisQueueConfiguration{}, cfg)
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if err != nil {
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return nil, err
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}
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config := configInterface.(RedisQueueConfiguration)
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byteFIFO, err := NewRedisByteFIFO(config.RedisByteFIFOConfiguration)
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if err != nil {
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return nil, err
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}
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byteFIFOQueue, err := NewByteFIFOQueue(RedisQueueType, byteFIFO, handle, config.ByteFIFOQueueConfiguration, exemplar)
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if err != nil {
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return nil, err
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}
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queue := &RedisQueue{
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ByteFIFOQueue: byteFIFOQueue,
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}
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queue.qid = GetManager().Add(queue, RedisQueueType, config, exemplar)
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return queue, nil
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}
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type redisClient interface {
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RPush(ctx context.Context, key string, args ...interface{}) *redis.IntCmd
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LPush(ctx context.Context, key string, args ...interface{}) *redis.IntCmd
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LPop(ctx context.Context, key string) *redis.StringCmd
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LLen(ctx context.Context, key string) *redis.IntCmd
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SAdd(ctx context.Context, key string, members ...interface{}) *redis.IntCmd
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SRem(ctx context.Context, key string, members ...interface{}) *redis.IntCmd
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SIsMember(ctx context.Context, key string, member interface{}) *redis.BoolCmd
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Ping(ctx context.Context) *redis.StatusCmd
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Close() error
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}
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var _ ByteFIFO = &RedisByteFIFO{}
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// RedisByteFIFO represents a ByteFIFO formed from a redisClient
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type RedisByteFIFO struct {
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client redisClient
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queueName string
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}
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// RedisByteFIFOConfiguration is the configuration for the RedisByteFIFO
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type RedisByteFIFOConfiguration struct {
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ConnectionString string
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QueueName string
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}
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// NewRedisByteFIFO creates a ByteFIFO formed from a redisClient
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func NewRedisByteFIFO(config RedisByteFIFOConfiguration) (*RedisByteFIFO, error) {
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fifo := &RedisByteFIFO{
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queueName: config.QueueName,
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}
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fifo.client = nosql.GetManager().GetRedisClient(config.ConnectionString)
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if err := fifo.client.Ping(graceful.GetManager().ShutdownContext()).Err(); err != nil {
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return nil, err
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}
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return fifo, nil
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}
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// PushFunc pushes data to the end of the fifo and calls the callback if it is added
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func (fifo *RedisByteFIFO) PushFunc(ctx context.Context, data []byte, fn func() error) error {
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if fn != nil {
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if err := fn(); err != nil {
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return err
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}
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}
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return fifo.client.RPush(ctx, fifo.queueName, data).Err()
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}
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// PushBack pushes data to the top of the fifo
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func (fifo *RedisByteFIFO) PushBack(ctx context.Context, data []byte) error {
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return fifo.client.LPush(ctx, fifo.queueName, data).Err()
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}
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// Pop pops data from the start of the fifo
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func (fifo *RedisByteFIFO) Pop(ctx context.Context) ([]byte, error) {
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data, err := fifo.client.LPop(ctx, fifo.queueName).Bytes()
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if err == nil || err == redis.Nil {
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return data, nil
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}
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return data, err
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}
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// Close this fifo
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func (fifo *RedisByteFIFO) Close() error {
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return fifo.client.Close()
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}
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// Len returns the length of the fifo
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func (fifo *RedisByteFIFO) Len(ctx context.Context) int64 {
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val, err := fifo.client.LLen(ctx, fifo.queueName).Result()
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if err != nil {
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log.Error("Error whilst getting length of redis queue %s: Error: %v", fifo.queueName, err)
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return -1
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}
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return val
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}
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func init() {
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queuesMap[RedisQueueType] = NewRedisQueue
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}
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