34 lines
940 B
Go
34 lines
940 B
Go
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package googlecompute
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import (
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"fmt"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/packer"
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)
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// StepCheckExistingImage represents a Packer build step that checks if the
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// target image already exists, and aborts immediately if so.
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type StepCheckExistingImage int
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// Run executes the Packer build step that checks if the image already exists.
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func (s *StepCheckExistingImage) Run(state multistep.StateBag) multistep.StepAction {
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config := state.Get("config").(*Config)
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driver := state.Get("driver").(Driver)
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ui := state.Get("ui").(packer.Ui)
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ui.Say("Checking image does not exist...")
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exists := driver.ImageExists(config.ImageName)
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if exists {
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err := fmt.Errorf("Image %s already exists", config.ImageName)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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return multistep.ActionContinue
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}
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// Cleanup.
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func (s *StepCheckExistingImage) Cleanup(state multistep.StateBag) {}
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