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Feature: karmadactl init supports deployment through configuration files
Signed-off-by: tiansuo114 <[email protected]> fix lint Signed-off-by: tiansuo114 <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| /* | ||
| Copyright 2024 The Karmada Authors. | ||
| 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 config | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "sort" | ||
|
|
||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| yamlserializer "k8s.io/apimachinery/pkg/runtime/serializer/yaml" | ||
| "k8s.io/apimachinery/pkg/util/yaml" | ||
| "k8s.io/klog/v2" | ||
| ) | ||
|
|
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| // LoadInitConfiguration loads the InitConfiguration from the specified file path. | ||
| // It delegates the actual loading to the loadInitConfigurationFromFile function. | ||
| func LoadInitConfiguration(cfgPath string) (*KarmadaInitConfig, error) { | ||
| var config *KarmadaInitConfig | ||
| var err error | ||
|
|
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| config, err = loadInitConfigurationFromFile(cfgPath) | ||
|
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| return config, err | ||
| } | ||
|
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| // loadInitConfigurationFromFile reads the file at the specified path and converts it into an InitConfiguration. | ||
| // It reads the file contents and then converts the bytes to an InitConfiguration. | ||
| func loadInitConfigurationFromFile(cfgPath string) (*KarmadaInitConfig, error) { | ||
| klog.V(1).Infof("loading configuration from %q", cfgPath) | ||
|
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| b, err := os.ReadFile(cfgPath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("unable to read config from %q: %v", cfgPath, err) | ||
| } | ||
| gvkmap, err := ParseGVKYamlMap(b) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| return documentMapToInitConfiguration(gvkmap) | ||
| } | ||
|
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| // ParseGVKYamlMap parses a single YAML document into a map of GroupVersionKind to byte slices. | ||
| // This function is a simplified version that handles only a single YAML document. | ||
| func ParseGVKYamlMap(yamlBytes []byte) (map[schema.GroupVersionKind][]byte, error) { | ||
| gvkmap := make(map[schema.GroupVersionKind][]byte) | ||
|
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| gvk, err := yamlserializer.DefaultMetaFactory.Interpret(yamlBytes) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to interpret YAML document: %w", err) | ||
| } | ||
| if len(gvk.Group) == 0 || len(gvk.Version) == 0 || len(gvk.Kind) == 0 { | ||
| return nil, fmt.Errorf("invalid configuration for GroupVersionKind %+v: kind and apiVersion is mandatory information that must be specified", gvk) | ||
| } | ||
| gvkmap[*gvk] = yamlBytes | ||
|
|
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| return gvkmap, nil | ||
| } | ||
|
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| // documentMapToInitConfiguration processes a map of GroupVersionKind to byte slices to extract the InitConfiguration. | ||
| // It iterates over the map, checking for the "InitConfiguration" kind, group, and version, and unmarshals its content into an InitConfiguration object. | ||
| func documentMapToInitConfiguration(gvkmap map[schema.GroupVersionKind][]byte) (*KarmadaInitConfig, error) { | ||
| var initcfg *KarmadaInitConfig | ||
|
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| gvks := make([]schema.GroupVersionKind, 0, len(gvkmap)) | ||
| for gvk := range gvkmap { | ||
| gvks = append(gvks, gvk) | ||
| } | ||
| sort.Slice(gvks, func(i, j int) bool { | ||
| return gvks[i].String() < gvks[j].String() | ||
| }) | ||
|
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| for _, gvk := range gvks { | ||
| fileContent := gvkmap[gvk] | ||
| if gvk.Kind == "KarmadaInitConfig" { | ||
| if gvk.Group != GroupName || gvk.Version != SchemeGroupVersion.Version { | ||
| return nil, fmt.Errorf("invalid Group or Version: expected group %q and version %q, but got group %q and version %q", GroupName, SchemeGroupVersion.Version, gvk.Group, gvk.Version) | ||
| } | ||
| initcfg = &KarmadaInitConfig{} | ||
| if err := yaml.Unmarshal(fileContent, initcfg); err != nil { | ||
| return nil, err | ||
| } | ||
| } | ||
| } | ||
|
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| if initcfg == nil { | ||
| return nil, fmt.Errorf("no KarmadaInitConfig kind was found in the YAML file") | ||
| } | ||
|
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| return initcfg, nil | ||
| } |
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