1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
// 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/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/nosql"
"github.com/go-redis/redis/v8"
)
// RedisQueueType is the type for redis queue
const RedisQueueType Type = "redis"
// RedisQueueConfiguration is the configuration for the redis queue
type RedisQueueConfiguration struct {
ByteFIFOQueueConfiguration
RedisByteFIFOConfiguration
}
// RedisQueue redis queue
type RedisQueue struct {
*ByteFIFOQueue
}
// NewRedisQueue creates single redis or cluster redis queue
func NewRedisQueue(handle HandlerFunc, cfg, exemplar interface{}) (Queue, error) {
configInterface, err := toConfig(RedisQueueConfiguration{}, cfg)
if err != nil {
return nil, err
}
config := configInterface.(RedisQueueConfiguration)
byteFIFO, err := NewRedisByteFIFO(config.RedisByteFIFOConfiguration)
if err != nil {
return nil, err
}
byteFIFOQueue, err := NewByteFIFOQueue(RedisQueueType, byteFIFO, handle, config.ByteFIFOQueueConfiguration, exemplar)
if err != nil {
return nil, err
}
byteFIFO.ctx = graceful.NewChannelContext(byteFIFOQueue.IsTerminated(), fmt.Errorf("queue has been terminated"))
queue := &RedisQueue{
ByteFIFOQueue: byteFIFOQueue,
}
queue.qid = GetManager().Add(queue, RedisQueueType, config, exemplar)
return queue, nil
}
type redisClient interface {
RPush(ctx context.Context, key string, args ...interface{}) *redis.IntCmd
LPop(ctx context.Context, key string) *redis.StringCmd
LLen(ctx context.Context, key string) *redis.IntCmd
SAdd(ctx context.Context, key string, members ...interface{}) *redis.IntCmd
SRem(ctx context.Context, key string, members ...interface{}) *redis.IntCmd
SIsMember(ctx context.Context, key string, member interface{}) *redis.BoolCmd
Ping(ctx context.Context) *redis.StatusCmd
Close() error
}
var _ ByteFIFO = &RedisByteFIFO{}
// RedisByteFIFO represents a ByteFIFO formed from a redisClient
type RedisByteFIFO struct {
ctx context.Context
client redisClient
queueName string
}
// RedisByteFIFOConfiguration is the configuration for the RedisByteFIFO
type RedisByteFIFOConfiguration struct {
ConnectionString string
QueueName string
}
// NewRedisByteFIFO creates a ByteFIFO formed from a redisClient
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
}
return fifo, nil
}
// 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 {
if fn != nil {
if err := fn(); err != nil {
return err
}
}
return fifo.client.RPush(fifo.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()
if err == nil || err == redis.Nil {
return data, nil
}
return data, err
}
// Close this fifo
func (fifo *RedisByteFIFO) Close() error {
return fifo.client.Close()
}
// Len returns the length of the fifo
func (fifo *RedisByteFIFO) Len() int64 {
val, err := fifo.client.LLen(fifo.ctx, fifo.queueName).Result()
if err != nil {
log.Error("Error whilst getting length of redis queue %s: Error: %v", fifo.queueName, err)
return -1
}
return val
}
func init() {
queuesMap[RedisQueueType] = NewRedisQueue
}
|
