frostfs-node/pkg/services/object/get/container.go
Leonard Lyubich f24daa10ff [] services/object: Implement new Get algorithm
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2020-12-11 17:19:37 +03:00

54 lines
1 KiB
Go

package getsvc
import (
"context"
"go.uber.org/zap"
)
func (exec *execCtx) executeOnContainer() {
if exec.isLocal() {
exec.log.Debug("return result directly")
return
}
exec.log.Debug("trying to execute in container...")
traverser, ok := exec.generateTraverser(exec.address())
if !ok {
return
}
ctx, cancel := context.WithCancel(exec.context())
defer cancel()
exec.status = statusUndefined
loop:
for {
addrs := traverser.Next()
if len(addrs) == 0 {
exec.log.Debug("no more nodes, abort placement iteration")
break
}
for i := range addrs {
select {
case <-ctx.Done():
exec.log.Debug("interrupt placement iteration by context",
zap.String("error", ctx.Err().Error()),
)
break loop
default:
}
// TODO: consider parallel execution
// TODO: consider optimization: if status == SPLIT we can continue until
// we reach the best result - split info with linking object ID.
if exec.processNode(ctx, addrs[i]) {
exec.log.Debug("completing the operation")
break loop
}
}
}
}