package getsvc import ( "context" "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client" "go.uber.org/zap" ) func (exec *execCtx) executeOnContainer() { if exec.isLocal() { exec.log.Debug("return result directly") return } lookupDepth := exec.netmapLookupDepth() exec.log.Debug("trying to execute in container...", zap.Uint64("netmap lookup depth", lookupDepth), ) // initialize epoch number ok := exec.initEpoch() if !ok { return } for { if exec.processCurrentEpoch() { break } // check the maximum depth has been reached if lookupDepth == 0 { break } lookupDepth-- // go to the previous epoch exec.curProcEpoch-- } } func (exec *execCtx) processCurrentEpoch() bool { exec.log.Debug("process epoch", zap.Uint64("number", exec.curProcEpoch), ) traverser, ok := exec.generateTraverser(exec.address()) if !ok { return true } ctx, cancel := context.WithCancel(exec.context()) defer cancel() exec.status = statusUndefined for { addrs := traverser.Next() if len(addrs) == 0 { exec.log.Debug("no more nodes, abort placement iteration") return false } for i := range addrs { select { case <-ctx.Done(): exec.log.Debug("interrupt placement iteration by context", zap.String("error", ctx.Err().Error()), ) return true default: } // TODO: #1142 consider parallel execution // TODO: #1142 consider optimization: if status == SPLIT we can continue until // we reach the best result - split info with linking object ID. var info client.NodeInfo client.NodeInfoFromNetmapElement(&info, addrs[i]) if exec.processNode(ctx, info) { exec.log.Debug("completing the operation") return true } } } }