37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
package common
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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)
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// This is used in the BasicPlaceholderData() func in the packer/provisioner.go
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// To force users to access generated data via the "generated" func.
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const PlaceholderMsg = "To set this dynamically in the Packer template, " +
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"you must use the `build` function"
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// Used to set variables which we need to access later in the build, where
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// state bag and config information won't work
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func sharedStateFilename(suffix string, buildName string) string {
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uuid := os.Getenv("PACKER_RUN_UUID")
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return filepath.Join(os.TempDir(), fmt.Sprintf("packer-%s-%s-%s", uuid, suffix, buildName))
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}
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func SetSharedState(key string, value string, buildName string) error {
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return ioutil.WriteFile(sharedStateFilename(key, buildName), []byte(value), 0600)
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}
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func RetrieveSharedState(key string, buildName string) (string, error) {
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value, err := ioutil.ReadFile(sharedStateFilename(key, buildName))
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if err != nil {
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return "", err
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}
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return string(value), nil
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}
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func RemoveSharedStateFile(key string, buildName string) {
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os.Remove(sharedStateFilename(key, buildName))
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}
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