Function extractRequiredKeys

cmd/pulumi.go:1350–1398

extractRequiredKeys parses source code content and returns fully-qualified config keys (namespace:key). It tracks which Config object uses which namespace via simple line-by-line analysis.

(content, defaultNS string)

// config keys (namespace:key). It tracks which Config object uses which
// namespace via simple line-by-line analysis.
func extractRequiredKeys(content, defaultNS string) []string {
	lines := strings.Split(content, "\n")

	// Map variable names to their config namespace.
	// e.g. "config" -> "voting-app", "aws_config" -> "aws"
	varNS := map[string]string{}

	// Patterns to detect config variable assignments:
	// Python: config = pulumi.Config()  or  config = pulumi.Config("ns")
	// TS:     const config = new pulumi.Config()  or  new pulumi.Config("ns")
	// Go:     cfg := config.New(ctx, "ns")
	reAssignDefault := regexp.MustCompile(`(\w+)\s*[:=]\s*(?:new\s+)?(?:pulumi\.)?Config\(\s*\)`)
	reAssignNS := regexp.MustCompile(`(\w+)\s*[:=]\s*(?:new\s+)?(?:pulumi\.)?Config\(\s*["']([^"']+)["']\s*\)`)
	// Go style: cfg, err := config.New(ctx, "ns")  or  cfg := config.New(ctx, "ns")
	reGoAssign := regexp.MustCompile(`(\w+)(?:\s*,\s*\w+)?\s*[:=]\s*(?:\w+\.)?(?:New|Try)\w*\(\s*\w+\s*,\s*["']([^"']+)["']\s*\)`)

	var keys []string

	for _, line := range lines {
		trimmed := strings.TrimSpace(line)

		// Detect config variable assignments
		if m := reAssignNS.FindStringSubmatch(trimmed); m != nil {
			varNS[m[1]] = m[2]
		} else if m := reAssignDefault.FindStringSubmatch(trimmed); m != nil {
			varNS[m[1]] = defaultNS
		} else if m := reGoAssign.FindStringSubmatch(trimmed); m != nil {
			varNS[m[1]] = m[2]
		}

		// Detect require calls
		// Match patterns like: config.require("key"), config.require_secret("key"), etc.
		reCall := regexp.MustCompile(`(\w+)\.(require|require_secret|requireSecret|Require|RequireSecret)\(\s*["']([^"']+)["']`)
		if m := reCall.FindStringSubmatch(trimmed); m != nil {
			varName := m[1]
			configKey := m[3]

			ns := defaultNS
			if mappedNS, ok := varNS[varName]; ok {
				ns = mappedNS
			}

			fullKey := ns + ":" + configKey
			keys = append(keys, fullKey)
		}
	}

	return keys
}

// pricingRelevantSuffixes are config key suffixes that affect cost estimation.
// Keys matching these should NOT be auto-filled with dummy values.