// Builds returns the builds out of the given template that pass the
// configured options.
func (f *BuildOptions) Builds(t *packer.Template, cf *packer.ComponentFinder) ([]packer.Build, error) {
buildNames := t.BuildNames()
// Process the name
tpl, _, err := t.NewConfigTemplate()
if err != nil {
return nil, err
}
checks := make(map[string][]string)
checks["except"] = f.Except
checks["only"] = f.Only
for t, ns := range checks {
for _, n := range ns {
found := false
for _, actual := range buildNames {
var processed string
processed, err = tpl.Process(actual, nil)
if err != nil {
return nil, err
}
if actual == n || processed == n {
found = true
break
}
}
if !found {
return nil, fmt.Errorf(
"Unknown build in '%s' flag: %s", t, n)
}
}
}
builds := make([]packer.Build, 0, len(buildNames))
for _, buildName := range buildNames {
var processedBuildName string
processedBuildName, err = tpl.Process(buildName, nil)
if err != nil {
return nil, err
}
if len(f.Except) > 0 {
found := false
for _, except := range f.Except {
if buildName == except || processedBuildName == except {
found = true
break
}
}
if found {
log.Printf("Skipping build '%s' because specified by -except.", processedBuildName)
continue
}
}
if len(f.Only) > 0 {
found := false
for _, only := range f.Only {
if buildName == only || processedBuildName == only {
found = true
break
}
}
if !found {
log.Printf("Skipping build '%s' because not specified by -only.", processedBuildName)
continue
}
}
log.Printf("Creating build: %s", processedBuildName)
build, err := t.Build(buildName, cf)
if err != nil {
return nil, fmt.Errorf("Failed to create build '%s': \n\n%s", buildName, err)
}
builds = append(builds, build)
}
return builds, nil
}
