mirror of
https://github.com/TECHNOFAB11/jsonnet-bundler.git
synced 2025-12-11 23:50:05 +01:00
36311f1601
rewrites the installation of packages from scratch to solve several issues with the existing implementation: - does not need to choose between lockfile and jsonnetfile anymore. The jsonnetfile what to be installed, while the lockfile also has versions and checksums of all packages, even nested ones. - the lockfile is regenerated on every run, preserving the locked values - downloaded packages are hashed using sha256 to make sure we receive what we expect. If files on the local disk are modified, they are downloaded again.
83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
// Copyright 2018 jsonnet-bundler 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 jsonnetfile
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import (
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"encoding/json"
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"io/ioutil"
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"os"
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"path/filepath"
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"github.com/pkg/errors"
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"github.com/jsonnet-bundler/jsonnet-bundler/spec"
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)
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const (
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File = "jsonnetfile.json"
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LockFile = "jsonnetfile.lock.json"
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)
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var ErrNoFile = errors.New("no jsonnetfile")
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func Choose(dir string) (string, bool, error) {
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jsonnetfileLock := filepath.Join(dir, LockFile)
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jsonnetfile := filepath.Join(dir, File)
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lockExists, err := Exists(jsonnetfileLock)
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if err != nil {
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return "", false, err
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}
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if lockExists {
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return jsonnetfileLock, true, nil
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}
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fileExists, err := Exists(jsonnetfile)
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if err != nil {
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return "", false, err
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}
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if fileExists {
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return jsonnetfile, false, nil
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}
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return "", false, ErrNoFile
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}
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func Load(filepath string) (spec.JsonnetFile, error) {
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m := spec.JsonnetFile{}
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bytes, err := ioutil.ReadFile(filepath)
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if err != nil {
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return m, err
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}
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if err := json.Unmarshal(bytes, &m); err != nil {
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return m, errors.Wrap(err, "failed to unmarshal file")
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}
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return m, nil
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}
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func Exists(path string) (bool, error) {
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_, err := os.Stat(path)
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if os.IsNotExist(err) {
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return false, nil
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}
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if err != nil {
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return false, err
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}
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return true, nil
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}
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