forked from cockroachdb/cockroach
-
Notifications
You must be signed in to change notification settings - Fork 0
/
testutil.go
91 lines (82 loc) · 2.63 KB
/
testutil.go
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
// Copyright 2015 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
//
// Author: Marc Berhault (marc@cockroachlabs.com)
package config
import (
"github.com/cockroachdb/cockroach/pkg/util/stop"
"github.com/cockroachdb/cockroach/pkg/util/syncutil"
)
type zoneConfigMap map[uint32]ZoneConfig
var (
testingZoneConfig zoneConfigMap
testingHasHook bool
testingPreviousHook zoneConfigHook
testingLock syncutil.Mutex
)
// TestingSetupZoneConfigHook initializes the zone config hook
// to 'testingZoneConfigHook' which uses 'testingZoneConfig'.
// Settings go back to their previous values when the stopper runs our closer.
func TestingSetupZoneConfigHook(stopper *stop.Stopper) {
stopper.AddCloser(stop.CloserFn(testingResetZoneConfigHook))
testingLock.Lock()
defer testingLock.Unlock()
if testingHasHook {
panic("TestingSetupZoneConfigHook called without restoring state")
}
testingHasHook = true
testingZoneConfig = make(zoneConfigMap)
testingPreviousHook = ZoneConfigHook
ZoneConfigHook = testingZoneConfigHook
testingLargestIDHook = func(maxID uint32) (max uint32) {
testingLock.Lock()
defer testingLock.Unlock()
for id := range testingZoneConfig {
if maxID > 0 && id > maxID {
continue
}
if id > max {
max = id
}
}
return
}
}
// testingResetZoneConfigHook resets the zone config hook back to what it was
// before TestingSetupZoneConfigHook was called.
func testingResetZoneConfigHook() {
testingLock.Lock()
defer testingLock.Unlock()
if !testingHasHook {
panic("TestingResetZoneConfigHook called on uninitialized testing hook")
}
testingHasHook = false
ZoneConfigHook = testingPreviousHook
testingLargestIDHook = nil
}
// TestingSetZoneConfig sets the zone config entry for object 'id'
// in the testing map.
func TestingSetZoneConfig(id uint32, zone ZoneConfig) {
testingLock.Lock()
defer testingLock.Unlock()
testingZoneConfig[id] = zone
}
func testingZoneConfigHook(_ SystemConfig, id uint32) (ZoneConfig, bool, error) {
testingLock.Lock()
defer testingLock.Unlock()
if zone, ok := testingZoneConfig[id]; ok {
return zone, true, nil
}
return ZoneConfig{}, false, nil
}