Spaces:
Running
Running
File size: 5,418 Bytes
b110593 |
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 |
// _ _
// __ _____ __ ___ ___ __ _| |_ ___
// \ \ /\ / / _ \/ _` \ \ / / |/ _` | __/ _ \
// \ V V / __/ (_| |\ V /| | (_| | || __/
// \_/\_/ \___|\__,_| \_/ |_|\__,_|\__\___|
//
// Copyright © 2016 - 2024 Weaviate B.V. All rights reserved.
//
// CONTACT: [email protected]
//
package cyclemanager
import (
"context"
"sync"
"github.com/weaviate/weaviate/entities/errorcompounder"
"golang.org/x/sync/errgroup"
)
// Used to control of registered in CycleCallbacks container callback
// Allows deactivating and activating registered callback or unregistering it
type CycleCallbackCtrl interface {
IsActive() bool
Activate() error
Deactivate(ctx context.Context) error
Unregister(ctx context.Context) error
}
type cycleCallbackCtrl struct {
callbackId uint32
callbackCustomId string
isActive func(callbackId uint32, callbackCustomId string) bool
activate func(callbackId uint32, callbackCustomId string) error
deactivate func(ctx context.Context, callbackId uint32, callbackCustomId string) error
unregister func(ctx context.Context, callbackId uint32, callbackCustomId string) error
}
func (c *cycleCallbackCtrl) IsActive() bool {
return c.isActive(c.callbackId, c.callbackCustomId)
}
func (c *cycleCallbackCtrl) Activate() error {
return c.activate(c.callbackId, c.callbackCustomId)
}
func (c *cycleCallbackCtrl) Deactivate(ctx context.Context) error {
return c.deactivate(ctx, c.callbackId, c.callbackCustomId)
}
func (c *cycleCallbackCtrl) Unregister(ctx context.Context) error {
return c.unregister(ctx, c.callbackId, c.callbackCustomId)
}
type cycleCombinedCallbackCtrl struct {
routinesLimit int
ctrls []CycleCallbackCtrl
}
// Creates combined controller to manage all provided controllers at once as it was single instance.
// Methods (activate, deactivate, unregister) calls nested controllers' methods in parallel by number of
// goroutines given as argument. If < 1 value given, NumCPU is used.
func NewCombinedCallbackCtrl(routinesLimit int, ctrls ...CycleCallbackCtrl) CycleCallbackCtrl {
if routinesLimit <= 0 {
routinesLimit = _NUMCPU
}
return &cycleCombinedCallbackCtrl{routinesLimit: routinesLimit, ctrls: ctrls}
}
func (c *cycleCombinedCallbackCtrl) IsActive() bool {
for _, ctrl := range c.ctrls {
if !ctrl.IsActive() {
return false
}
}
return true
}
func (c *cycleCombinedCallbackCtrl) Activate() error {
return c.combineErrors(c.activate()...)
}
func (c *cycleCombinedCallbackCtrl) activate() []error {
eg := &errgroup.Group{}
eg.SetLimit(c.routinesLimit)
lock := new(sync.Mutex)
errs := make([]error, 0, len(c.ctrls))
for _, ctrl := range c.ctrls {
ctrl := ctrl
eg.Go(func() error {
if err := ctrl.Activate(); err != nil {
c.locked(lock, func() { errs = append(errs, err) })
return err
}
return nil
})
}
eg.Wait()
return errs
}
func (c *cycleCombinedCallbackCtrl) Deactivate(ctx context.Context) error {
errs, deactivated := c.deactivate(ctx)
if len(errs) == 0 {
return nil
}
// try activating back deactivated
eg := &errgroup.Group{}
eg.SetLimit(c.routinesLimit)
for _, id := range deactivated {
id := id
eg.Go(func() error {
return c.ctrls[id].Activate()
})
}
eg.Wait()
return c.combineErrors(errs...)
}
func (c *cycleCombinedCallbackCtrl) deactivate(ctx context.Context) ([]error, []int) {
eg := &errgroup.Group{}
eg.SetLimit(c.routinesLimit)
lock := new(sync.Mutex)
errs := make([]error, 0, len(c.ctrls))
deactivated := make([]int, 0, len(c.ctrls))
for id, ctrl := range c.ctrls {
id, ctrl := id, ctrl
eg.Go(func() error {
if err := ctrl.Deactivate(ctx); err != nil {
c.locked(lock, func() { errs = append(errs, err) })
return err
}
c.locked(lock, func() { deactivated = append(deactivated, id) })
return nil
})
}
eg.Wait()
return errs, deactivated
}
func (c *cycleCombinedCallbackCtrl) Unregister(ctx context.Context) error {
return c.combineErrors(c.unregister(ctx)...)
}
func (c *cycleCombinedCallbackCtrl) unregister(ctx context.Context) []error {
eg := &errgroup.Group{}
eg.SetLimit(c.routinesLimit)
lock := new(sync.Mutex)
errs := make([]error, 0, len(c.ctrls))
for _, ctrl := range c.ctrls {
ctrl := ctrl
eg.Go(func() error {
if err := ctrl.Unregister(ctx); err != nil {
c.locked(lock, func() { errs = append(errs, err) })
return err
}
return nil
})
}
eg.Wait()
return errs
}
func (c *cycleCombinedCallbackCtrl) locked(lock *sync.Mutex, mutate func()) {
lock.Lock()
defer lock.Unlock()
mutate()
}
func (c *cycleCombinedCallbackCtrl) combineErrors(errors ...error) error {
ec := &errorcompounder.ErrorCompounder{}
for _, err := range errors {
ec.Add(err)
}
return ec.ToError()
}
type cycleCallbackCtrlNoop struct{}
func NewCallbackCtrlNoop() CycleCallbackCtrl {
return &cycleCallbackCtrlNoop{}
}
func (c *cycleCallbackCtrlNoop) IsActive() bool {
return false
}
func (c *cycleCallbackCtrlNoop) Activate() error {
return nil
}
func (c *cycleCallbackCtrlNoop) Deactivate(ctx context.Context) error {
return ctx.Err()
}
func (c *cycleCallbackCtrlNoop) Unregister(ctx context.Context) error {
return ctx.Err()
}
|