Use vendored go-swagger (#8087)

* Use vendored go-swagger

* vendor go-swagger

* revert un wanteed change

* remove un-needed GO111MODULE

* Update Makefile

Co-Authored-By: techknowlogick <matti@mdranta.net>

vendor/github.com/go-openapi/loads/spec.go

@@ -0,0 +1,298 @@
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package loads
+
+import (
+	"bytes"
+	"encoding/gob"
+	"encoding/json"
+	"fmt"
+	"net/url"
+
+	"github.com/go-openapi/analysis"
+	"github.com/go-openapi/spec"
+	"github.com/go-openapi/swag"
+)
+
+// JSONDoc loads a json document from either a file or a remote url
+func JSONDoc(path string) (json.RawMessage, error) {
+	data, err := swag.LoadFromFileOrHTTP(path)
+	if err != nil {
+		return nil, err
+	}
+	return json.RawMessage(data), nil
+}
+
+// DocLoader represents a doc loader type
+type DocLoader func(string) (json.RawMessage, error)
+
+// DocMatcher represents a predicate to check if a loader matches
+type DocMatcher func(string) bool
+
+var (
+	loaders       *loader
+	defaultLoader *loader
+)
+
+func init() {
+	defaultLoader = &loader{Match: func(_ string) bool { return true }, Fn: JSONDoc}
+	loaders = defaultLoader
+	spec.PathLoader = loaders.Fn
+	AddLoader(swag.YAMLMatcher, swag.YAMLDoc)
+
+	gob.Register(map[string]interface{}{})
+	gob.Register([]interface{}{})
+	//gob.Register(spec.Refable{})
+}
+
+// AddLoader for a document
+func AddLoader(predicate DocMatcher, load DocLoader) {
+	prev := loaders
+	loaders = &loader{
+		Match: predicate,
+		Fn:    load,
+		Next:  prev,
+	}
+	spec.PathLoader = loaders.Fn
+}
+
+type loader struct {
+	Fn    DocLoader
+	Match DocMatcher
+	Next  *loader
+}
+
+// JSONSpec loads a spec from a json document
+func JSONSpec(path string) (*Document, error) {
+	data, err := JSONDoc(path)
+	if err != nil {
+		return nil, err
+	}
+	// convert to json
+	return Analyzed(data, "")
+}
+
+// Document represents a swagger spec document
+type Document struct {
+	// specAnalyzer
+	Analyzer     *analysis.Spec
+	spec         *spec.Swagger
+	specFilePath string
+	origSpec     *spec.Swagger
+	schema       *spec.Schema
+	raw          json.RawMessage
+}
+
+// Embedded returns a Document based on embedded specs. No analysis is required
+func Embedded(orig, flat json.RawMessage) (*Document, error) {
+	var origSpec, flatSpec spec.Swagger
+	if err := json.Unmarshal(orig, &origSpec); err != nil {
+		return nil, err
+	}
+	if err := json.Unmarshal(flat, &flatSpec); err != nil {
+		return nil, err
+	}
+	return &Document{
+		raw:      orig,
+		origSpec: &origSpec,
+		spec:     &flatSpec,
+	}, nil
+}
+
+// Spec loads a new spec document
+func Spec(path string) (*Document, error) {
+	specURL, err := url.Parse(path)
+	if err != nil {
+		return nil, err
+	}
+	var lastErr error
+	for l := loaders.Next; l != nil; l = l.Next {
+		if loaders.Match(specURL.Path) {
+			b, err2 := loaders.Fn(path)
+			if err2 != nil {
+				lastErr = err2
+				continue
+			}
+			doc, err3 := Analyzed(b, "")
+			if err3 != nil {
+				return nil, err3
+			}
+			if doc != nil {
+				doc.specFilePath = path
+			}
+			return doc, nil
+		}
+	}
+	if lastErr != nil {
+		return nil, lastErr
+	}
+	b, err := defaultLoader.Fn(path)
+	if err != nil {
+		return nil, err
+	}
+
+	document, err := Analyzed(b, "")
+	if document != nil {
+		document.specFilePath = path
+	}
+
+	return document, err
+}
+
+// Analyzed creates a new analyzed spec document
+func Analyzed(data json.RawMessage, version string) (*Document, error) {
+	if version == "" {
+		version = "2.0"
+	}
+	if version != "2.0" {
+		return nil, fmt.Errorf("spec version %q is not supported", version)
+	}
+
+	raw := data
+	trimmed := bytes.TrimSpace(data)
+	if len(trimmed) > 0 {
+		if trimmed[0] != '{' && trimmed[0] != '[' {
+			yml, err := swag.BytesToYAMLDoc(trimmed)
+			if err != nil {
+				return nil, fmt.Errorf("analyzed: %v", err)
+			}
+			d, err := swag.YAMLToJSON(yml)
+			if err != nil {
+				return nil, fmt.Errorf("analyzed: %v", err)
+			}
+			raw = d
+		}
+	}
+
+	swspec := new(spec.Swagger)
+	if err := json.Unmarshal(raw, swspec); err != nil {
+		return nil, err
+	}
+
+	origsqspec, err := cloneSpec(swspec)
+	if err != nil {
+		return nil, err
+	}
+
+	d := &Document{
+		Analyzer: analysis.New(swspec),
+		schema:   spec.MustLoadSwagger20Schema(),
+		spec:     swspec,
+		raw:      raw,
+		origSpec: origsqspec,
+	}
+	return d, nil
+}
+
+// Expanded expands the ref fields in the spec document and returns a new spec document
+func (d *Document) Expanded(options ...*spec.ExpandOptions) (*Document, error) {
+	swspec := new(spec.Swagger)
+	if err := json.Unmarshal(d.raw, swspec); err != nil {
+		return nil, err
+	}
+
+	var expandOptions *spec.ExpandOptions
+	if len(options) > 0 {
+		expandOptions = options[0]
+	} else {
+		expandOptions = &spec.ExpandOptions{
+			RelativeBase: d.specFilePath,
+		}
+	}
+
+	if err := spec.ExpandSpec(swspec, expandOptions); err != nil {
+		return nil, err
+	}
+
+	dd := &Document{
+		Analyzer:     analysis.New(swspec),
+		spec:         swspec,
+		specFilePath: d.specFilePath,
+		schema:       spec.MustLoadSwagger20Schema(),
+		raw:          d.raw,
+		origSpec:     d.origSpec,
+	}
+	return dd, nil
+}
+
+// BasePath the base path for this spec
+func (d *Document) BasePath() string {
+	return d.spec.BasePath
+}
+
+// Version returns the version of this spec
+func (d *Document) Version() string {
+	return d.spec.Swagger
+}
+
+// Schema returns the swagger 2.0 schema
+func (d *Document) Schema() *spec.Schema {
+	return d.schema
+}
+
+// Spec returns the swagger spec object model
+func (d *Document) Spec() *spec.Swagger {
+	return d.spec
+}
+
+// Host returns the host for the API
+func (d *Document) Host() string {
+	return d.spec.Host
+}
+
+// Raw returns the raw swagger spec as json bytes
+func (d *Document) Raw() json.RawMessage {
+	return d.raw
+}
+
+// OrigSpec yields the original spec
+func (d *Document) OrigSpec() *spec.Swagger {
+	return d.origSpec
+}
+
+// ResetDefinitions gives a shallow copy with the models reset
+func (d *Document) ResetDefinitions() *Document {
+	defs := make(map[string]spec.Schema, len(d.origSpec.Definitions))
+	for k, v := range d.origSpec.Definitions {
+		defs[k] = v
+	}
+
+	d.spec.Definitions = defs
+	return d
+}
+
+// Pristine creates a new pristine document instance based on the input data
+func (d *Document) Pristine() *Document {
+	dd, _ := Analyzed(d.Raw(), d.Version())
+	return dd
+}
+
+// SpecFilePath returns the file path of the spec if one is defined
+func (d *Document) SpecFilePath() string {
+	return d.specFilePath
+}
+
+func cloneSpec(src *spec.Swagger) (*spec.Swagger, error) {
+	var b bytes.Buffer
+	if err := gob.NewEncoder(&b).Encode(src); err != nil {
+		return nil, err
+	}
+
+	var dst spec.Swagger
+	if err := gob.NewDecoder(&b).Decode(&dst); err != nil {
+		return nil, err
+	}
+	return &dst, nil
+}