package loader import ( "strconv" "strings" interp "github.com/docker/cli/cli/compose/interpolation" "github.com/pkg/errors" ) var interpolateTypeCastMapping = map[interp.Path]interp.Cast{ servicePath("configs", interp.PathMatchList, "mode"): toInt, servicePath("secrets", interp.PathMatchList, "mode"): toInt, servicePath("healthcheck", "retries"): toInt, servicePath("healthcheck", "disable"): toBoolean, servicePath("deploy", "replicas"): toInt, servicePath("deploy", "update_config", "parallelism"): toInt, servicePath("deploy", "update_config", "max_failure_ratio"): toFloat, servicePath("deploy", "rollback_config", "parallelism"): toInt, servicePath("deploy", "rollback_config", "max_failure_ratio"): toFloat, servicePath("deploy", "restart_policy", "max_attempts"): toInt, servicePath("deploy", "placement", "max_replicas_per_node"): toInt, servicePath("ports", interp.PathMatchList, "target"): toInt, servicePath("ports", interp.PathMatchList, "published"): toInt, servicePath("ulimits", interp.PathMatchAll): toInt, servicePath("ulimits", interp.PathMatchAll, "hard"): toInt, servicePath("ulimits", interp.PathMatchAll, "soft"): toInt, servicePath("privileged"): toBoolean, servicePath("read_only"): toBoolean, servicePath("stdin_open"): toBoolean, servicePath("tty"): toBoolean, servicePath("volumes", interp.PathMatchList, "read_only"): toBoolean, servicePath("volumes", interp.PathMatchList, "volume", "nocopy"): toBoolean, iPath("networks", interp.PathMatchAll, "external"): toBoolean, iPath("networks", interp.PathMatchAll, "internal"): toBoolean, iPath("networks", interp.PathMatchAll, "attachable"): toBoolean, iPath("volumes", interp.PathMatchAll, "external"): toBoolean, iPath("secrets", interp.PathMatchAll, "external"): toBoolean, iPath("configs", interp.PathMatchAll, "external"): toBoolean, } func iPath(parts ...string) interp.Path { return interp.NewPath(parts...) } func servicePath(parts ...string) interp.Path { return iPath(append([]string{"services", interp.PathMatchAll}, parts...)...) } func toInt(value string) (interface{}, error) { return strconv.Atoi(value) } func toFloat(value string) (interface{}, error) { return strconv.ParseFloat(value, 64) } // should match http://yaml.org/type/bool.html func toBoolean(value string) (interface{}, error) { switch strings.ToLower(value) { case "y", "yes", "true", "on": return true, nil case "n", "no", "false", "off": return false, nil default: return nil, errors.Errorf("invalid boolean: %s", value) } } func interpolateConfig(configDict map[string]interface{}, opts interp.Options) (map[string]interface{}, error) { return interp.Interpolate(configDict, opts) }