72 lines
1.5 KiB
Go
72 lines
1.5 KiB
Go
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package command
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import (
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"errors"
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"fmt"
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"github.com/mitchellh/packer/packer"
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"log"
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)
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// BuildFilters is a set of options to filter the builds out of a template.
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type BuildFilters struct {
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Except []string
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Only []string
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}
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// Validate validates the filter settings
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func (f *BuildFilters) Validate() error {
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if len(f.Except) > 0 && len(f.Only) > 0 {
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return errors.New("Only one of '-except' or '-only' may be specified.")
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}
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return nil
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}
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// Builds returns the builds out of the given template that pass the
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// configured filters.
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func (f *BuildFilters) Builds(t *packer.Template, cf *packer.ComponentFinder) ([]packer.Build, error) {
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buildNames := t.BuildNames()
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builds := make([]packer.Build, 0, len(buildNames))
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for _, buildName := range buildNames {
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if len(f.Except) > 0 {
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found := false
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for _, except := range f.Except {
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if buildName == except {
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found = true
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break
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}
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}
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if found {
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log.Printf("Skipping build '%s' because specified by -except.", buildName)
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continue
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}
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}
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if len(f.Only) > 0 {
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found := false
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for _, only := range f.Only {
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if buildName == only {
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found = true
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break
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}
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}
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if !found {
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log.Printf("Skipping build '%s' because not specified by -only.", buildName)
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continue
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}
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}
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log.Printf("Creating build: %s", buildName)
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build, err := t.Build(buildName, cf)
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if err != nil {
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return nil, fmt.Errorf("Failed to create build '%s': \n\n%s", buildName, err)
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}
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builds = append(builds, build)
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}
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return builds, nil
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}
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