forked from rook/rook
Travis Nielsen
bcb99d86ce
The rook types used across the storage providers moved from the v1alpha2 package to the v1 package. This commit points the packages at their new location. Implementation is expected to remain unchanged. Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
122 lines
3.2 KiB
Go
122 lines
3.2 KiB
Go
/*
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Copyright 2019 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package k8sutil
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import (
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"encoding/json"
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"fmt"
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"strings"
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rookv1 "github.com/rook/rook/pkg/apis/rook.io/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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// parseMultusSelector will parse short and JSON form of individual multus
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// network attachment selection annotation. Valid JSON will be unmarshaled and
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// return as is, while invalid JSON will be tried using
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// <namespace>/<name>@<interface> short syntax.
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func parseMultusSelector(selector string) (map[string]string, error) {
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rawMap := make(map[string]string)
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err := json.Unmarshal([]byte(selector), &rawMap)
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if err != nil {
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// it can be in short form
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nsEndIndex := strings.IndexAny(selector, "/")
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if nsEndIndex != -1 {
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rawMap["namespace"] = selector[:nsEndIndex]
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}
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ifStartIndex := strings.LastIndexAny(selector, "@")
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if ifStartIndex != -1 && len(selector)-ifStartIndex > 1 {
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rawMap["interface"] = selector[ifStartIndex+1:]
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}
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if nsEndIndex != -1 && ifStartIndex != -1 && ifStartIndex-nsEndIndex > 1 {
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rawMap["name"] = selector[nsEndIndex+1 : ifStartIndex]
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} else if nsEndIndex == -1 && ifStartIndex != -1 {
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rawMap["name"] = selector[:ifStartIndex]
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} else if nsEndIndex != -1 && ifStartIndex == -1 {
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rawMap["name"] = selector[nsEndIndex+1:]
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}
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}
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if name, ok := rawMap["name"]; !ok || name == "" {
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return nil, fmt.Errorf("parseMultusSelector: missing name")
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}
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return rawMap, nil
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}
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// GetMultusIfName return a network interface name that multus will assign when
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// connected to the multus network.
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func GetMultusIfName(selector string) (string, error) {
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multusMap, _ := parseMultusSelector(selector)
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var ifName string
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if name, ok := multusMap["interfaceRequest"]; ok {
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ifName = name
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}
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if name, ok := multusMap["interface"]; ok {
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ifName = name
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}
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// fail selector without inteface name
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if ifName == "" {
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return "", fmt.Errorf("GetMultusIfname: missing interface")
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}
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return ifName, nil
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}
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// ApplyMultus apply multus selector to Pods
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// Multus supports short and json syntax, use only one kind at a time.
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func ApplyMultus(net rookv1.NetworkSpec, objectMeta *metav1.ObjectMeta) error {
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v := make([]string, 0, 2)
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shortSyntax := false
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jsonSyntax := false
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for _, ns := range net.Selectors {
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var multusMap map[string]string
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err := json.Unmarshal([]byte(ns), &multusMap)
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if err == nil {
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jsonSyntax = true
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} else {
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shortSyntax = true
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}
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v = append(v, string(ns))
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}
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if shortSyntax && jsonSyntax {
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return fmt.Errorf("ApplyMultus: Can't mix short and JSON form")
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}
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networks := strings.Join(v, ", ")
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if jsonSyntax {
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networks = "[" + networks + "]"
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}
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t := rookv1.Annotations{
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"k8s.v1.cni.cncf.io/networks": networks,
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}
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t.ApplyToObjectMeta(objectMeta)
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return nil
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}
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