Repository navigation
Expand file tree
/
Copy pathtargets.go
More file actions
232 lines (197 loc) · 5.92 KB
/
Copy pathtargets.go
File metadata and controls
232 lines (197 loc) · 5.92 KB
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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
// Copyright (c) 2015-2022 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package logger
import (
"context"
"fmt"
"strings"
"sync"
"github.com/minio/minio/internal/logger/target/http"
"github.com/minio/minio/internal/logger/target/kafka"
"github.com/minio/minio/internal/logger/target/types"
)
// Target is the entity that we will receive
// a single log entry and Send it to the log target
//
// e.g. Send the log to a http server
type Target interface {
String() string
Endpoint() string
Stats() types.TargetStats
Init(ctx context.Context) error
IsOnline(ctx context.Context) bool
Cancel()
Send(ctx context.Context, entry interface{}) error
Type() types.TargetType
}
var (
swapAuditMuRW sync.RWMutex
swapSystemMuRW sync.RWMutex
// systemTargets is the set of enabled loggers.
// Must be immutable at all times.
// Can be swapped to another while holding swapMu
systemTargets = []Target{}
// This is always set represent /dev/console target
consoleTgt Target
)
// SystemTargets returns active targets.
// Returned slice may not be modified in any way.
func SystemTargets() []Target {
swapSystemMuRW.RLock()
defer swapSystemMuRW.RUnlock()
res := systemTargets
return res
}
// AuditTargets returns active audit targets.
// Returned slice may not be modified in any way.
func AuditTargets() []Target {
swapAuditMuRW.RLock()
defer swapAuditMuRW.RUnlock()
res := auditTargets
return res
}
// CurrentStats returns the current statistics.
func CurrentStats() map[string]types.TargetStats {
sys := SystemTargets()
audit := AuditTargets()
res := make(map[string]types.TargetStats, len(sys)+len(audit))
cnt := make(map[string]int, len(sys)+len(audit))
// Add system and audit.
for _, t := range sys {
key := strings.ToLower(t.Type().String())
n := cnt[key]
cnt[key]++
key = fmt.Sprintf("sys_%s_%d", key, n)
res[key] = t.Stats()
}
for _, t := range audit {
key := strings.ToLower(t.Type().String())
n := cnt[key]
cnt[key]++
key = fmt.Sprintf("audit_%s_%d", key, n)
res[key] = t.Stats()
}
return res
}
// auditTargets is the list of enabled audit loggers
// Must be immutable at all times.
// Can be swapped to another while holding swapMu
var (
auditTargets = []Target{}
)
// AddSystemTarget adds a new logger target to the
// list of enabled loggers
func AddSystemTarget(ctx context.Context, t Target) error {
if err := t.Init(ctx); err != nil {
return err
}
swapSystemMuRW.Lock()
defer swapSystemMuRW.Unlock()
if consoleTgt == nil {
if t.Type() == types.TargetConsole {
consoleTgt = t
}
}
updated := append(make([]Target, 0, len(systemTargets)+1), systemTargets...)
updated = append(updated, t)
systemTargets = updated
return nil
}
func initSystemTargets(ctx context.Context, cfgMap map[string]http.Config) ([]Target, []error) {
tgts := []Target{}
errs := []error{}
for _, l := range cfgMap {
if l.Enabled {
t := http.New(l)
tgts = append(tgts, t)
e := t.Init(ctx)
if e != nil {
errs = append(errs, e)
}
}
}
return tgts, errs
}
func initKafkaTargets(ctx context.Context, cfgMap map[string]kafka.Config) ([]Target, []error) {
tgts := []Target{}
errs := []error{}
for _, l := range cfgMap {
if l.Enabled {
t := kafka.New(l)
tgts = append(tgts, t)
e := t.Init(ctx)
if e != nil {
errs = append(errs, e)
}
}
}
return tgts, errs
}
// Split targets into two groups:
//
// group1 contains all targets of type t
// group2 contains the remaining targets
func splitTargets(targets []Target, t types.TargetType) (group1 []Target, group2 []Target) {
for _, target := range targets {
if target.Type() == t {
group1 = append(group1, target)
} else {
group2 = append(group2, target)
}
}
return
}
func cancelTargets(targets []Target) {
for _, target := range targets {
target.Cancel()
}
}
// UpdateSystemTargets swaps targets with newly loaded ones from the cfg
func UpdateSystemTargets(ctx context.Context, cfg Config) []error {
newTgts, errs := initSystemTargets(ctx, cfg.HTTP)
swapSystemMuRW.Lock()
consoleTargets, otherTargets := splitTargets(systemTargets, types.TargetConsole)
newTgts = append(newTgts, consoleTargets...)
systemTargets = newTgts
swapSystemMuRW.Unlock()
cancelTargets(otherTargets) // cancel running targets
return errs
}
// UpdateAuditWebhookTargets swaps audit webhook targets with newly loaded ones from the cfg
func UpdateAuditWebhookTargets(ctx context.Context, cfg Config) []error {
newWebhookTgts, errs := initSystemTargets(ctx, cfg.AuditWebhook)
swapAuditMuRW.Lock()
// Retain kafka targets
oldWebhookTgts, otherTgts := splitTargets(auditTargets, types.TargetHTTP)
newWebhookTgts = append(newWebhookTgts, otherTgts...)
auditTargets = newWebhookTgts
swapAuditMuRW.Unlock()
cancelTargets(oldWebhookTgts) // cancel running targets
return errs
}
// UpdateAuditKafkaTargets swaps audit kafka targets with newly loaded ones from the cfg
func UpdateAuditKafkaTargets(ctx context.Context, cfg Config) []error {
newKafkaTgts, errs := initKafkaTargets(ctx, cfg.AuditKafka)
swapAuditMuRW.Lock()
// Retain webhook targets
oldKafkaTgts, otherTgts := splitTargets(auditTargets, types.TargetKafka)
newKafkaTgts = append(newKafkaTgts, otherTgts...)
auditTargets = newKafkaTgts
swapAuditMuRW.Unlock()
cancelTargets(oldKafkaTgts) // cancel running targets
return errs
}