mirror of
https://github.com/openfaas/faasd.git
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**What** - Use the compose-go library to read the service definitions from an external compose file instead of building them in Go - Add default compose file and copy during `faasd install` - Add test for load and parse of compose file - Make testing easier by sorting the env keys - Allow append to instantiate the slices so that we can more easily test for proper parsing (e.g. nil is still nil etc) - Add the arch suffix to the compose file and set this as part of the env when we parse the compose file. This allows faasd to dynamically set the arch suffix used for the basic auth and the gateway images. Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>
192 lines
4.8 KiB
Go
Generated
192 lines
4.8 KiB
Go
Generated
/*
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Copyright 2020 The Compose Specification Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package schema
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//go:generate esc -o bindata.go -pkg schema -ignore .*\.go -private -modtime=1518458244 data
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import (
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"fmt"
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"strings"
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"time"
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"github.com/pkg/errors"
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"github.com/xeipuuv/gojsonschema"
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)
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const (
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defaultVersion = "1.0"
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versionField = "version"
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)
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type portsFormatChecker struct{}
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func (checker portsFormatChecker) IsFormat(input interface{}) bool {
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// TODO: implement this
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return true
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}
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type durationFormatChecker struct{}
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func (checker durationFormatChecker) IsFormat(input interface{}) bool {
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value, ok := input.(string)
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if !ok {
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return false
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}
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_, err := time.ParseDuration(value)
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return err == nil
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}
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func init() {
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gojsonschema.FormatCheckers.Add("expose", portsFormatChecker{})
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gojsonschema.FormatCheckers.Add("ports", portsFormatChecker{})
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gojsonschema.FormatCheckers.Add("duration", durationFormatChecker{})
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}
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// Version returns the version of the config, defaulting to version 1.0
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func Version(config map[string]interface{}) string {
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version, ok := config[versionField]
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if !ok {
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return defaultVersion
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}
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return normalizeVersion(fmt.Sprintf("%v", version))
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}
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func normalizeVersion(version string) string {
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switch version {
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case "3":
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return "3.9" // latest
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case "3.0", "3.1", "3.2", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8":
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return "3.9" // pre-existing specification but backward compatible
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default:
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return version
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}
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}
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// Validate uses the jsonschema to validate the configuration
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func Validate(config map[string]interface{}, version string) error {
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version = normalizeVersion(version)
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schemaData, err := _escFSByte(false, fmt.Sprintf("/data/config_schema_v%s.json", version))
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if err != nil {
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return errors.Errorf("unsupported Compose file version: %s", version)
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}
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schemaLoader := gojsonschema.NewStringLoader(string(schemaData))
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dataLoader := gojsonschema.NewGoLoader(config)
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result, err := gojsonschema.Validate(schemaLoader, dataLoader)
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if err != nil {
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return err
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}
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if !result.Valid() {
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return toError(result)
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}
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return nil
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}
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func toError(result *gojsonschema.Result) error {
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err := getMostSpecificError(result.Errors())
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return err
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}
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const (
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jsonschemaOneOf = "number_one_of"
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jsonschemaAnyOf = "number_any_of"
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)
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func getDescription(err validationError) string {
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switch err.parent.Type() {
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case "invalid_type":
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if expectedType, ok := err.parent.Details()["expected"].(string); ok {
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return fmt.Sprintf("must be a %s", humanReadableType(expectedType))
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}
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case jsonschemaOneOf, jsonschemaAnyOf:
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if err.child == nil {
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return err.parent.Description()
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}
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return err.child.Description()
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}
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return err.parent.Description()
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}
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func humanReadableType(definition string) string {
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if definition[0:1] == "[" {
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allTypes := strings.Split(definition[1:len(definition)-1], ",")
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for i, t := range allTypes {
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allTypes[i] = humanReadableType(t)
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}
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return fmt.Sprintf(
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"%s or %s",
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strings.Join(allTypes[0:len(allTypes)-1], ", "),
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allTypes[len(allTypes)-1],
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)
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}
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if definition == "object" {
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return "mapping"
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}
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if definition == "array" {
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return "list"
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}
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return definition
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}
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type validationError struct {
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parent gojsonschema.ResultError
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child gojsonschema.ResultError
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}
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func (err validationError) Error() string {
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description := getDescription(err)
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return fmt.Sprintf("%s %s", err.parent.Field(), description)
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}
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func getMostSpecificError(errors []gojsonschema.ResultError) validationError {
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mostSpecificError := 0
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for i, err := range errors {
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if specificity(err) > specificity(errors[mostSpecificError]) {
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mostSpecificError = i
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continue
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}
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if specificity(err) == specificity(errors[mostSpecificError]) {
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// Invalid type errors win in a tie-breaker for most specific field name
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if err.Type() == "invalid_type" && errors[mostSpecificError].Type() != "invalid_type" {
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mostSpecificError = i
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}
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}
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}
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if mostSpecificError+1 == len(errors) {
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return validationError{parent: errors[mostSpecificError]}
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}
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switch errors[mostSpecificError].Type() {
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case "number_one_of", "number_any_of":
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return validationError{
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parent: errors[mostSpecificError],
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child: errors[mostSpecificError+1],
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}
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default:
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return validationError{parent: errors[mostSpecificError]}
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}
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}
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func specificity(err gojsonschema.ResultError) int {
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return len(strings.Split(err.Field(), "."))
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}
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