70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
package module
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import (
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"io/ioutil"
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"os"
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"github.com/hashicorp/go-getter"
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)
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// GetMode is an enum that describes how modules are loaded.
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//
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// GetModeLoad says that modules will not be downloaded or updated, they will
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// only be loaded from the storage.
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//
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// GetModeGet says that modules can be initially downloaded if they don't
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// exist, but otherwise to just load from the current version in storage.
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//
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// GetModeUpdate says that modules should be checked for updates and
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// downloaded prior to loading. If there are no updates, we load the version
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// from disk, otherwise we download first and then load.
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type GetMode byte
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const (
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GetModeNone GetMode = iota
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GetModeGet
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GetModeUpdate
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)
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// GetCopy is the same as Get except that it downloads a copy of the
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// module represented by source.
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//
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// This copy will omit and dot-prefixed files (such as .git/, .hg/) and
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// can't be updated on its own.
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func GetCopy(dst, src string) error {
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// Create the temporary directory to do the real Get to
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tmpDir, err := ioutil.TempDir("", "tf")
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if err != nil {
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return err
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}
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if err := os.RemoveAll(tmpDir); err != nil {
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return err
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}
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defer os.RemoveAll(tmpDir)
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// Get to that temporary dir
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if err := getter.Get(tmpDir, src); err != nil {
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return err
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}
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// Make sure the destination exists
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if err := os.MkdirAll(dst, 0755); err != nil {
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return err
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}
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// Copy to the final location
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return copyDir(dst, tmpDir)
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}
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func getStorage(s getter.Storage, key string, src string, mode GetMode) (string, bool, error) {
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// Get the module with the level specified if we were told to.
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if mode > GetModeNone {
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if err := s.Get(key, src, mode == GetModeUpdate); err != nil {
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return "", false, err
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}
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}
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// Get the directory where the module is.
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return s.Dir(key)
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}
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