57 lines
1.8 KiB
Go
57 lines
1.8 KiB
Go
// Copyright 2016 CNI authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package create
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import (
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"encoding/json"
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"fmt"
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"github.com/containernetworking/cni/pkg/types"
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convert "github.com/containernetworking/cni/pkg/types/internal"
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)
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// DecodeVersion returns the CNI version from CNI configuration or result JSON,
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// or an error if the operation could not be performed.
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func DecodeVersion(jsonBytes []byte) (string, error) {
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var conf struct {
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CNIVersion string `json:"cniVersion"`
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}
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err := json.Unmarshal(jsonBytes, &conf)
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if err != nil {
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return "", fmt.Errorf("decoding version from network config: %w", err)
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}
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if conf.CNIVersion == "" {
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return "0.1.0", nil
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}
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return conf.CNIVersion, nil
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}
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// Create creates a CNI Result using the given JSON with the expected
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// version, or an error if the creation could not be performed
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func Create(version string, bytes []byte) (types.Result, error) {
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return convert.Create(version, bytes)
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}
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// CreateFromBytes creates a CNI Result from the given JSON, automatically
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// detecting the CNI spec version of the result. An error is returned if the
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// operation could not be performed.
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func CreateFromBytes(bytes []byte) (types.Result, error) {
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version, err := DecodeVersion(bytes)
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if err != nil {
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return nil, err
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}
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return convert.Create(version, bytes)
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}
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