/
lockers.go
69 lines (61 loc) · 1.49 KB
/
lockers.go
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package hazelcasts
import (
"fmt"
"github.com/aacfactory/errors"
"github.com/aacfactory/fns/context"
"github.com/aacfactory/fns/shareds"
"github.com/hazelcast/hazelcast-go-client"
"time"
)
type Locker struct {
value *Maps
key []byte
ttl time.Duration
}
func (locker *Locker) Lock(ctx context.Context) (err error) {
if locker.ttl == 0 {
err = locker.value.Lock(ctx, locker.key)
} else {
err = locker.value.LockWithLease(ctx, locker.key, locker.ttl)
}
if err != nil {
err = errors.Warning("hazelcast: lock failed").WithCause(err)
return
}
return
}
func (locker *Locker) Unlock(ctx context.Context) (err error) {
err = locker.value.Unlock(ctx, locker.key)
if err != nil {
err = errors.Warning("hazelcast: unlock failed").WithCause(err)
return
}
return
}
func NewLockers(ctx context.Context, client *hazelcast.Client, size int) (v shareds.Lockers, err error) {
value, valueErr := NewMaps(ctx, "fns:shared:lockers", client, size)
if valueErr != nil {
err = errors.Warning("hazelcast: new shared lockers failed").WithCause(valueErr)
return
}
v = &Lockers{
value: value,
}
return
}
type Lockers struct {
value *Maps
}
func (lockers *Lockers) Acquire(_ context.Context, key []byte, ttl time.Duration) (locker shareds.Locker, err error) {
if len(key) == 0 {
err = errors.Warning("hazelcast: acquire locker failed").WithCause(fmt.Errorf("key is required"))
}
locker = &Locker{
value: lockers.value,
key: key,
ttl: ttl,
}
return
}
func (lockers *Lockers) Close() {
}