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Merge pull request #965 from ArangoGutierrez/cnt/103
Enable labels for IMEX Domain and Clique
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| /** | ||
| # Copyright (c) 2024, NVIDIA CORPORATION. All rights reserved. | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| **/ | ||
|
|
||
| package lm | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "fmt" | ||
| "io" | ||
| "math/rand" // nolint:gosec | ||
| "net" | ||
| "os" | ||
| "sort" | ||
| "strings" | ||
|
|
||
| spec "github.com/NVIDIA/k8s-device-plugin/api/config/v1" | ||
| "github.com/NVIDIA/k8s-device-plugin/internal/resource" | ||
|
|
||
| "github.com/google/uuid" | ||
| "k8s.io/klog/v2" | ||
| ) | ||
|
|
||
| func newImexLabeler(config *spec.Config, devices []resource.Device) (Labeler, error) { | ||
| if config.Flags.GFD.ImexNodesConfigFile == nil || *config.Flags.GFD.ImexNodesConfigFile == "" { | ||
| // No imex config file, return empty labels | ||
| return empty{}, nil | ||
| } | ||
|
|
||
| imexConfigFile, err := os.Open(*config.Flags.GFD.ImexNodesConfigFile) | ||
| if os.IsNotExist(err) { | ||
| // No imex config file, return empty labels | ||
| return empty{}, nil | ||
| } else if err != nil { | ||
| return nil, fmt.Errorf("failed to open imex config file: %v", err) | ||
| } | ||
| defer imexConfigFile.Close() | ||
|
|
||
| clusterUUID, cliqueID, err := getFabricIDs(devices) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if clusterUUID == "" || cliqueID == "" { | ||
| return empty{}, nil | ||
| } | ||
|
|
||
| imexDomainID, err := getImexDomainID(imexConfigFile) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if imexDomainID == "" { | ||
| return empty{}, nil | ||
| } | ||
|
|
||
| labels := Labels{ | ||
| "nvidia.com/gpu.clique": strings.Join([]string{clusterUUID, cliqueID}, "."), | ||
| "nvidia.com/gpu.imex-domain": strings.Join([]string{imexDomainID, cliqueID}, "."), | ||
| } | ||
|
|
||
| return labels, nil | ||
| } | ||
|
|
||
| func getFabricIDs(devices []resource.Device) (string, string, error) { | ||
| uniqueClusterUUIDs := make(map[string][]int) | ||
| uniqueCliqueIDs := make(map[string][]int) | ||
| for i, device := range devices { | ||
| isFabricAttached, err := device.IsFabricAttached() | ||
| if err != nil { | ||
| return "", "", fmt.Errorf("error checking imex capability: %v", err) | ||
| } | ||
| if !isFabricAttached { | ||
| continue | ||
| } | ||
|
|
||
| clusterUUID, cliqueID, err := device.GetFabricIDs() | ||
| if err != nil { | ||
|
|
||
| return "", "", fmt.Errorf("error getting fabric IDs: %w", err) | ||
| } | ||
|
|
||
| uniqueClusterUUIDs[clusterUUID] = append(uniqueClusterUUIDs[clusterUUID], i) | ||
| uniqueCliqueIDs[cliqueID] = append(uniqueCliqueIDs[cliqueID], i) | ||
| } | ||
|
|
||
| if len(uniqueClusterUUIDs) > 1 { | ||
| klog.Warningf("Cluster UUIDs are non-unique: %v", uniqueClusterUUIDs) | ||
| return "", "", nil | ||
| } | ||
|
|
||
| if len(uniqueCliqueIDs) > 1 { | ||
| klog.Warningf("Clique IDs are non-unique: %v", uniqueCliqueIDs) | ||
| return "", "", nil | ||
| } | ||
|
|
||
| for clusterUUID := range uniqueClusterUUIDs { | ||
| for cliqueID := range uniqueCliqueIDs { | ||
| return clusterUUID, cliqueID, nil | ||
| } | ||
| } | ||
| return "", "", nil | ||
| } | ||
|
|
||
| // getImexDomainID reads the imex config file and returns a unique identifier | ||
| // based on the sorted list of IP addresses in the file. | ||
| func getImexDomainID(r io.Reader) (string, error) { | ||
| // Read the file line by line | ||
| var ips []string | ||
| scanner := bufio.NewScanner(r) | ||
| for scanner.Scan() { | ||
| ip := strings.TrimSpace(scanner.Text()) | ||
| if net.ParseIP(ip) == nil { | ||
| return "", fmt.Errorf("invalid IP address in imex config file: %s", ip) | ||
| } | ||
| ips = append(ips, ip) | ||
| } | ||
|
|
||
| if err := scanner.Err(); err != nil { | ||
| return "", fmt.Errorf("failed to read imex config file: %v", err) | ||
| } | ||
|
|
||
| if len(ips) == 0 { | ||
| // No IPs in the file, return empty labels | ||
| return "", nil | ||
| } | ||
|
|
||
| sort.Strings(ips) | ||
|
|
||
| return generateContentUUID(strings.Join(ips, "\n")), nil | ||
|
|
||
| } | ||
|
|
||
| func generateContentUUID(seed string) string { | ||
| // nolint:gosec | ||
| rand := rand.New(rand.NewSource(hash(seed))) | ||
| charset := make([]byte, 16) | ||
| rand.Read(charset) | ||
| uuid, _ := uuid.FromBytes(charset) | ||
| return uuid.String() | ||
| } | ||
|
|
||
| func hash(s string) int64 { | ||
| h := int64(0) | ||
| for _, c := range s { | ||
| h = 31*h + int64(c) | ||
| } | ||
| return h | ||
| } |
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