97 lines
2.4 KiB
Go
97 lines
2.4 KiB
Go
/*
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* Copyright 2022 CloudWeGo 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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*/
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package meta
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import (
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"bytes"
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"fmt"
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"os"
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"path/filepath"
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gv "github.com/hashicorp/go-version"
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"gopkg.in/yaml.v2"
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)
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const ManifestFile = ".hz"
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type Manifest struct {
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Version string `yaml:"hz version"`
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HandlerDir string `yaml:"handlerDir"`
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ModelDir string `yaml:"modelDir"`
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RouterDir string `yaml:"routerDir"`
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}
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var GoVersion *gv.Version
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func init() {
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// valid by unit test already, so no need to check error
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GoVersion, _ = gv.NewVersion(Version)
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}
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func (manifest *Manifest) InitAndValidate(dir string) error {
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m, err := loadConfigFile(filepath.Join(dir, ManifestFile))
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if err != nil {
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return fmt.Errorf("can not load \".hz\", err: %v", err)
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}
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if len(m.Version) == 0 {
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return fmt.Errorf("can not get hz version form \".hz\", current project doesn't belong to hertz framework")
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}
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*manifest = *m
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_, err = gv.NewVersion(manifest.Version)
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if err != nil {
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return fmt.Errorf("invalid hz version in \".hz\", err: %v", err)
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}
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return nil
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}
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const hzTitle = "// Code generated by hz. DO NOT EDIT."
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func (manifest *Manifest) String() string {
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conf, _ := yaml.Marshal(*manifest)
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return hzTitle + "\n\n" +
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string(conf)
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}
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func (manifest *Manifest) Persist(dir string) error {
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file := filepath.Join(dir, ManifestFile)
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fd, err := os.OpenFile(file, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, os.FileMode(0o644))
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if err != nil {
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return err
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}
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defer fd.Close()
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_, err = fd.WriteString(manifest.String())
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return err
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}
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// loadConfigFile load config file from path
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func loadConfigFile(path string) (*Manifest, error) {
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file, err := os.ReadFile(path)
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if err != nil {
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return nil, err
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}
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var manifest Manifest
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file = bytes.TrimPrefix(file, []byte(hzTitle))
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if err = yaml.Unmarshal(file, &manifest); err != nil {
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return nil, fmt.Errorf("decode \".hz\" failed, err: %v", err)
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}
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return &manifest, nil
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}
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