frostfs-node/pkg/services/policer/check.go
Leonard Lyubich f66c7958e7 [#109] services/policer: Assign tasks to Replicator
Make Policer to call AddTask method of Replicator when an insufficient
number of copies of an object is detected in the container.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2020-10-23 15:23:22 +03:00

109 lines
2.4 KiB
Go

package policer
import (
"context"
"strings"
"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
"github.com/nspcc-dev/neofs-api-go/pkg/object"
"github.com/nspcc-dev/neofs-node/pkg/network"
headsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/head"
"github.com/nspcc-dev/neofs-node/pkg/services/replicator"
"go.uber.org/zap"
)
func (p *Policer) processObject(ctx context.Context, addr *object.Address) {
cnr, err := p.cnrSrc.Get(addr.GetContainerID())
if err != nil {
p.log.Error("could not get container",
zap.String("error", err.Error()),
)
return
}
policy := cnr.GetPlacementPolicy()
nn, err := p.placementBuilder.BuildPlacement(addr, policy)
if err != nil {
p.log.Error("could not build placement vector for object",
zap.String("error", err.Error()),
)
return
}
replicas := policy.GetReplicas()
for i := range nn {
select {
case <-ctx.Done():
return
default:
}
p.processNodes(ctx, addr, nn[i], replicas[i].GetCount())
}
}
func (p *Policer) processNodes(ctx context.Context, addr *object.Address, nodes netmap.Nodes, shortage uint32) {
prm := new(headsvc.RemoteHeadPrm).WithObjectAddress(addr)
for i := 0; shortage > 0 && i < len(nodes); i++ {
select {
case <-ctx.Done():
return
default:
}
netAddr := nodes[i].NetworkAddress()
log := p.log.With(zap.String("node", netAddr))
node, err := network.AddressFromString(netAddr)
if err != nil {
log.Error("could not parse network address")
continue
}
if network.IsLocalAddress(p.localAddrSrc, node) {
shortage--
} else {
callCtx, cancel := context.WithTimeout(ctx, p.headTimeout)
_, err = p.remoteHeader.Head(callCtx, prm.WithNodeAddress(node))
cancel()
if err != nil {
// FIXME: this is a temporary solution to resolve 404 response from remote node
// We need to distinguish problem nodes from nodes without an object.
if strings.Contains(err.Error(), headsvc.ErrNotFound.Error()) {
continue
} else {
log.Error("could not receive object header",
zap.String("error", err.Error()),
)
}
} else {
shortage--
}
}
nodes = append(nodes[:i], nodes[i+1:]...)
i--
}
if shortage > 0 {
p.log.Info("shortage of object copies detected",
zap.Uint32("shortage", shortage),
)
p.replicator.AddTask(new(replicator.Task).
WithObjectAddress(addr).
WithNodes(nodes).
WithCopiesNumber(shortage),
)
}
}