Function ApplyBinding

pkg/templates/templates.go:27–54

ApplyBinding renders an input template using bindings in Go templating format

(input string, bindings map[string]string)

// ApplyBinding renders an input template using bindings in Go templating format
func ApplyBinding(input string, bindings map[string]string) (string, error) {
	if input == "" {
		return "", nil
	}

	if bindings == nil {
		bindings = make(map[string]string)
	}

	// Support both `.inputs.foo` and `inputs.foo`
	input = inputsPrefixRegexp.ReplaceAllString(input, "{{ .inputs.")

	tmpl, err := template.New("chainloop").Option("missingkey=zero").Parse(input)
	if err != nil {
		return "", err
	}

	// Only support placeholders that are prefixed with "inputs.", ex `{{ inputs.foo }}
	namespacedBinding := map[string]any{"inputs": bindings}

	buffer := new(bytes.Buffer)
	err = tmpl.Execute(buffer, namespacedBinding)
	if err != nil {
		return "", err
	}

	return buffer.String(), nil
}