55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
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package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"sort"
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"strings"
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)
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// findInfraRoot walks up from start to the infra repo root — the directory
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// holding both terragrunt.hcl and a stacks/ directory.
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func findInfraRoot(start string) (string, error) {
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dir := start
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for {
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if isFile(filepath.Join(dir, "terragrunt.hcl")) && isDir(filepath.Join(dir, "stacks")) {
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return dir, nil
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}
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parent := filepath.Dir(dir)
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if parent == dir {
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return "", fmt.Errorf("not inside an infra checkout (no terragrunt.hcl + stacks/ found above %s)", start)
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}
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dir = parent
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}
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}
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// resolveStack maps a bare stack name to its directory under <infraRoot>/stacks.
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func resolveStack(infraRoot, name string) (string, error) {
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dir := filepath.Join(infraRoot, "stacks", name)
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if isDir(dir) {
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return dir, nil
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}
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avail := listStacks(infraRoot)
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return "", fmt.Errorf("stack %q not found under stacks/; available: %s", name, strings.Join(avail, ", "))
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}
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// listStacks returns the sorted names of every directory under <infraRoot>/stacks.
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func listStacks(infraRoot string) []string {
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entries, err := os.ReadDir(filepath.Join(infraRoot, "stacks"))
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if err != nil {
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return nil
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}
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var out []string
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for _, e := range entries {
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if e.IsDir() {
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out = append(out, e.Name())
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}
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}
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sort.Strings(out)
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return out
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}
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func isFile(p string) bool { fi, err := os.Stat(p); return err == nil && !fi.IsDir() }
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func isDir(p string) bool { fi, err := os.Stat(p); return err == nil && fi.IsDir() }
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