ceph-csi/vendor/github.com/googleapis/gnostic/generate-gnostic/domain.go
Serguei Bezverkhi 7b24313bd6 vendor files
2018-01-10 13:42:26 -05:00

625 lines
22 KiB
Go

// Copyright 2017 Google Inc. All Rights Reserved.
//
// 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 main
import (
"errors"
"fmt"
"log"
"sort"
"strings"
"github.com/googleapis/gnostic/jsonschema"
)
// Domain models a collection of types that is defined by a schema.
type Domain struct {
TypeModels map[string]*TypeModel // models of the types in the domain
Prefix string // type prefix to use
Schema *jsonschema.Schema // top-level schema
TypeNameOverrides map[string]string // a configured mapping from patterns to type names
PropertyNameOverrides map[string]string // a configured mapping from patterns to property names
ObjectTypeRequests map[string]*TypeRequest // anonymous types implied by type instantiation
MapTypeRequests map[string]string // "NamedObject" types that will be used to implement ordered maps
Version string // OpenAPI Version ("v2" or "v3")
}
// NewDomain creates a domain representation.
func NewDomain(schema *jsonschema.Schema, version string) *Domain {
cc := &Domain{}
cc.TypeModels = make(map[string]*TypeModel, 0)
cc.TypeNameOverrides = make(map[string]string, 0)
cc.PropertyNameOverrides = make(map[string]string, 0)
cc.ObjectTypeRequests = make(map[string]*TypeRequest, 0)
cc.MapTypeRequests = make(map[string]string, 0)
cc.Schema = schema
cc.Version = version
return cc
}
// TypeNameForStub returns a capitalized name to use for a generated type.
func (domain *Domain) TypeNameForStub(stub string) string {
return domain.Prefix + strings.ToUpper(stub[0:1]) + stub[1:len(stub)]
}
// typeNameForReference returns a capitalized name to use for a generated type based on a JSON reference
func (domain *Domain) typeNameForReference(reference string) string {
parts := strings.Split(reference, "/")
first := parts[0]
last := parts[len(parts)-1]
if first == "#" {
return domain.TypeNameForStub(last)
}
return "Schema"
}
// propertyNameForReference returns a property name to use for a JSON reference
func (domain *Domain) propertyNameForReference(reference string) *string {
parts := strings.Split(reference, "/")
first := parts[0]
last := parts[len(parts)-1]
if first == "#" {
return &last
}
return nil
}
// arrayItemTypeForSchema determines the item type for arrays defined by a schema
func (domain *Domain) arrayItemTypeForSchema(propertyName string, schema *jsonschema.Schema) string {
// default
itemTypeName := "Any"
if schema.Items != nil {
if schema.Items.SchemaArray != nil {
if len(*(schema.Items.SchemaArray)) > 0 {
ref := (*schema.Items.SchemaArray)[0].Ref
if ref != nil {
itemTypeName = domain.typeNameForReference(*ref)
} else {
types := (*schema.Items.SchemaArray)[0].Type
if types == nil {
// do nothing
} else if (types.StringArray != nil) && len(*(types.StringArray)) == 1 {
itemTypeName = (*types.StringArray)[0]
} else if (types.StringArray != nil) && len(*(types.StringArray)) > 1 {
itemTypeName = fmt.Sprintf("%+v", types.StringArray)
} else if types.String != nil {
itemTypeName = *(types.String)
} else {
itemTypeName = "UNKNOWN"
}
}
}
} else if schema.Items.Schema != nil {
types := schema.Items.Schema.Type
if schema.Items.Schema.Ref != nil {
itemTypeName = domain.typeNameForReference(*schema.Items.Schema.Ref)
} else if schema.Items.Schema.OneOf != nil {
// this type is implied by the "oneOf"
itemTypeName = domain.TypeNameForStub(propertyName + "Item")
domain.ObjectTypeRequests[itemTypeName] =
NewTypeRequest(itemTypeName, propertyName, schema.Items.Schema)
} else if types == nil {
// do nothing
} else if (types.StringArray != nil) && len(*(types.StringArray)) == 1 {
itemTypeName = (*types.StringArray)[0]
} else if (types.StringArray != nil) && len(*(types.StringArray)) > 1 {
itemTypeName = fmt.Sprintf("%+v", types.StringArray)
} else if types.String != nil {
itemTypeName = *(types.String)
} else {
itemTypeName = "UNKNOWN"
}
}
}
return itemTypeName
}
func (domain *Domain) buildTypeProperties(typeModel *TypeModel, schema *jsonschema.Schema) {
if schema.Properties != nil {
for _, pair := range *(schema.Properties) {
propertyName := pair.Name
propertySchema := pair.Value
if propertySchema.Ref != nil {
// the property schema is a reference, so we will add a property with the type of the referenced schema
propertyTypeName := domain.typeNameForReference(*(propertySchema.Ref))
typeProperty := NewTypeProperty()
typeProperty.Name = propertyName
typeProperty.Type = propertyTypeName
typeModel.addProperty(typeProperty)
} else if propertySchema.Type != nil {
// the property schema specifies a type, so add a property with the specified type
if propertySchema.TypeIs("string") {
typeProperty := NewTypePropertyWithNameAndType(propertyName, "string")
if propertySchema.Description != nil {
typeProperty.Description = *propertySchema.Description
}
if propertySchema.Enumeration != nil {
allowedValues := make([]string, 0)
for _, enumValue := range *propertySchema.Enumeration {
if enumValue.String != nil {
allowedValues = append(allowedValues, *enumValue.String)
}
}
typeProperty.StringEnumValues = allowedValues
}
typeModel.addProperty(typeProperty)
} else if propertySchema.TypeIs("boolean") {
typeProperty := NewTypePropertyWithNameAndType(propertyName, "bool")
if propertySchema.Description != nil {
typeProperty.Description = *propertySchema.Description
}
typeModel.addProperty(typeProperty)
} else if propertySchema.TypeIs("number") {
typeProperty := NewTypePropertyWithNameAndType(propertyName, "float")
if propertySchema.Description != nil {
typeProperty.Description = *propertySchema.Description
}
typeModel.addProperty(typeProperty)
} else if propertySchema.TypeIs("integer") {
typeProperty := NewTypePropertyWithNameAndType(propertyName, "int")
if propertySchema.Description != nil {
typeProperty.Description = *propertySchema.Description
}
typeModel.addProperty(typeProperty)
} else if propertySchema.TypeIs("object") {
// the property has an "anonymous" object schema, so define a new type for it and request its creation
anonymousObjectTypeName := domain.TypeNameForStub(propertyName)
domain.ObjectTypeRequests[anonymousObjectTypeName] =
NewTypeRequest(anonymousObjectTypeName, propertyName, propertySchema)
// add a property with the type of the requested type
typeProperty := NewTypePropertyWithNameAndType(propertyName, anonymousObjectTypeName)
if propertySchema.Description != nil {
typeProperty.Description = *propertySchema.Description
}
typeModel.addProperty(typeProperty)
} else if propertySchema.TypeIs("array") {
// the property has an array type, so define it as a repeated property of the specified type
propertyTypeName := domain.arrayItemTypeForSchema(propertyName, propertySchema)
typeProperty := NewTypePropertyWithNameAndType(propertyName, propertyTypeName)
typeProperty.Repeated = true
if propertySchema.Description != nil {
typeProperty.Description = *propertySchema.Description
}
if typeProperty.Type == "string" {
itemSchema := propertySchema.Items.Schema
if itemSchema != nil {
if itemSchema.Enumeration != nil {
allowedValues := make([]string, 0)
for _, enumValue := range *itemSchema.Enumeration {
if enumValue.String != nil {
allowedValues = append(allowedValues, *enumValue.String)
}
}
typeProperty.StringEnumValues = allowedValues
}
}
}
typeModel.addProperty(typeProperty)
} else {
log.Printf("ignoring %+v, which has an unsupported property type '%s'", propertyName, propertySchema.Type.Description())
}
} else if propertySchema.IsEmpty() {
// an empty schema can contain anything, so add an accessor for a generic object
typeName := "Any"
typeProperty := NewTypePropertyWithNameAndType(propertyName, typeName)
typeModel.addProperty(typeProperty)
} else if propertySchema.OneOf != nil {
anonymousObjectTypeName := domain.TypeNameForStub(propertyName + "Item")
domain.ObjectTypeRequests[anonymousObjectTypeName] =
NewTypeRequest(anonymousObjectTypeName, propertyName, propertySchema)
typeProperty := NewTypePropertyWithNameAndType(propertyName, anonymousObjectTypeName)
typeModel.addProperty(typeProperty)
} else if propertySchema.AnyOf != nil {
anonymousObjectTypeName := domain.TypeNameForStub(propertyName + "Item")
domain.ObjectTypeRequests[anonymousObjectTypeName] =
NewTypeRequest(anonymousObjectTypeName, propertyName, propertySchema)
typeProperty := NewTypePropertyWithNameAndType(propertyName, anonymousObjectTypeName)
typeModel.addProperty(typeProperty)
} else {
log.Printf("ignoring %s.%s, which has an unrecognized schema:\n%+v", typeModel.Name, propertyName, propertySchema.String())
}
}
}
}
func (domain *Domain) buildTypeRequirements(typeModel *TypeModel, schema *jsonschema.Schema) {
if schema.Required != nil {
typeModel.Required = (*schema.Required)
}
}
func (domain *Domain) buildPatternPropertyAccessors(typeModel *TypeModel, schema *jsonschema.Schema) {
if schema.PatternProperties != nil {
typeModel.OpenPatterns = make([]string, 0)
for _, pair := range *(schema.PatternProperties) {
propertyPattern := pair.Name
propertySchema := pair.Value
typeModel.OpenPatterns = append(typeModel.OpenPatterns, propertyPattern)
if propertySchema.Ref != nil {
typeName := domain.typeNameForReference(*propertySchema.Ref)
if _, ok := domain.TypeNameOverrides[typeName]; ok {
typeName = domain.TypeNameOverrides[typeName]
}
propertyName := domain.typeNameForReference(*propertySchema.Ref)
if _, ok := domain.PropertyNameOverrides[propertyName]; ok {
propertyName = domain.PropertyNameOverrides[propertyName]
}
propertyTypeName := fmt.Sprintf("Named%s", typeName)
property := NewTypePropertyWithNameTypeAndPattern(propertyName, propertyTypeName, propertyPattern)
property.Implicit = true
property.MapType = typeName
property.Repeated = true
domain.MapTypeRequests[property.MapType] = property.MapType
typeModel.addProperty(property)
}
}
}
}
func (domain *Domain) buildAdditionalPropertyAccessors(typeModel *TypeModel, schema *jsonschema.Schema) {
if schema.AdditionalProperties != nil {
if schema.AdditionalProperties.Boolean != nil {
if *schema.AdditionalProperties.Boolean == true {
typeModel.Open = true
propertyName := "additionalProperties"
typeName := "NamedAny"
property := NewTypePropertyWithNameAndType(propertyName, typeName)
property.Implicit = true
property.MapType = "Any"
property.Repeated = true
domain.MapTypeRequests[property.MapType] = property.MapType
typeModel.addProperty(property)
return
}
} else if schema.AdditionalProperties.Schema != nil {
typeModel.Open = true
schema := schema.AdditionalProperties.Schema
if schema.Ref != nil {
propertyName := "additionalProperties"
mapType := domain.typeNameForReference(*schema.Ref)
typeName := fmt.Sprintf("Named%s", mapType)
property := NewTypePropertyWithNameAndType(propertyName, typeName)
property.Implicit = true
property.MapType = mapType
property.Repeated = true
domain.MapTypeRequests[property.MapType] = property.MapType
typeModel.addProperty(property)
return
} else if schema.Type != nil {
typeName := *schema.Type.String
if typeName == "string" {
propertyName := "additionalProperties"
typeName := "NamedString"
property := NewTypePropertyWithNameAndType(propertyName, typeName)
property.Implicit = true
property.MapType = "string"
property.Repeated = true
domain.MapTypeRequests[property.MapType] = property.MapType
typeModel.addProperty(property)
return
} else if typeName == "array" {
if schema.Items != nil {
itemType := *schema.Items.Schema.Type.String
if itemType == "string" {
propertyName := "additionalProperties"
typeName := "NamedStringArray"
property := NewTypePropertyWithNameAndType(propertyName, typeName)
property.Implicit = true
property.MapType = "StringArray"
property.Repeated = true
domain.MapTypeRequests[property.MapType] = property.MapType
typeModel.addProperty(property)
return
}
}
}
} else if schema.OneOf != nil {
propertyTypeName := domain.TypeNameForStub(typeModel.Name + "Item")
propertyName := "additionalProperties"
typeName := fmt.Sprintf("Named%s", propertyTypeName)
property := NewTypePropertyWithNameAndType(propertyName, typeName)
property.Implicit = true
property.MapType = propertyTypeName
property.Repeated = true
domain.MapTypeRequests[property.MapType] = property.MapType
typeModel.addProperty(property)
domain.ObjectTypeRequests[propertyTypeName] =
NewTypeRequest(propertyTypeName, propertyName, schema)
}
}
}
}
func (domain *Domain) buildOneOfAccessors(typeModel *TypeModel, schema *jsonschema.Schema) {
oneOfs := schema.OneOf
if oneOfs == nil {
return
}
typeModel.Open = true
typeModel.OneOfWrapper = true
for _, oneOf := range *oneOfs {
if oneOf.Ref != nil {
ref := *oneOf.Ref
typeName := domain.typeNameForReference(ref)
propertyName := domain.propertyNameForReference(ref)
if propertyName != nil {
typeProperty := NewTypePropertyWithNameAndType(*propertyName, typeName)
typeModel.addProperty(typeProperty)
}
} else if oneOf.Type != nil && oneOf.Type.String != nil {
switch *oneOf.Type.String {
case "boolean":
typeProperty := NewTypePropertyWithNameAndType("boolean", "bool")
typeModel.addProperty(typeProperty)
case "integer":
typeProperty := NewTypePropertyWithNameAndType("integer", "int")
typeModel.addProperty(typeProperty)
case "number":
typeProperty := NewTypePropertyWithNameAndType("number", "float")
typeModel.addProperty(typeProperty)
case "string":
typeProperty := NewTypePropertyWithNameAndType("string", "string")
typeModel.addProperty(typeProperty)
default:
log.Printf("Unsupported oneOf:\n%+v", oneOf.String())
}
} else {
log.Printf("Unsupported oneOf:\n%+v", oneOf.String())
}
}
}
func schemaIsContainedInArray(s1 *jsonschema.Schema, s2 *jsonschema.Schema) bool {
if s2.TypeIs("array") {
if s2.Items.Schema != nil {
if s1.IsEqual(s2.Items.Schema) {
return true
}
}
}
return false
}
func (domain *Domain) addAnonymousAccessorForSchema(
typeModel *TypeModel,
schema *jsonschema.Schema,
repeated bool) {
ref := schema.Ref
if ref != nil {
typeName := domain.typeNameForReference(*ref)
propertyName := domain.propertyNameForReference(*ref)
if propertyName != nil {
property := NewTypePropertyWithNameAndType(*propertyName, typeName)
property.Repeated = true
typeModel.addProperty(property)
typeModel.IsItemArray = true
}
} else {
typeName := "string"
propertyName := "value"
property := NewTypePropertyWithNameAndType(propertyName, typeName)
property.Repeated = true
typeModel.addProperty(property)
typeModel.IsStringArray = true
}
}
func (domain *Domain) buildAnyOfAccessors(typeModel *TypeModel, schema *jsonschema.Schema) {
anyOfs := schema.AnyOf
if anyOfs == nil {
return
}
if len(*anyOfs) == 2 {
if schemaIsContainedInArray((*anyOfs)[0], (*anyOfs)[1]) {
//log.Printf("ARRAY OF %+v", (*anyOfs)[0].String())
schema := (*anyOfs)[0]
domain.addAnonymousAccessorForSchema(typeModel, schema, true)
} else if schemaIsContainedInArray((*anyOfs)[1], (*anyOfs)[0]) {
//log.Printf("ARRAY OF %+v", (*anyOfs)[1].String())
schema := (*anyOfs)[1]
domain.addAnonymousAccessorForSchema(typeModel, schema, true)
} else {
for _, anyOf := range *anyOfs {
ref := anyOf.Ref
if ref != nil {
typeName := domain.typeNameForReference(*ref)
propertyName := domain.propertyNameForReference(*ref)
if propertyName != nil {
property := NewTypePropertyWithNameAndType(*propertyName, typeName)
typeModel.addProperty(property)
}
} else {
typeName := "bool"
propertyName := "boolean"
property := NewTypePropertyWithNameAndType(propertyName, typeName)
typeModel.addProperty(property)
}
}
}
} else {
log.Printf("Unhandled anyOfs:\n%s", schema.String())
}
}
func (domain *Domain) buildDefaultAccessors(typeModel *TypeModel, schema *jsonschema.Schema) {
typeModel.Open = true
propertyName := "additionalProperties"
typeName := "NamedAny"
property := NewTypePropertyWithNameAndType(propertyName, typeName)
property.MapType = "Any"
property.Repeated = true
domain.MapTypeRequests[property.MapType] = property.MapType
typeModel.addProperty(property)
}
// BuildTypeForDefinition creates a type representation for a schema definition.
func (domain *Domain) BuildTypeForDefinition(
typeName string,
propertyName string,
schema *jsonschema.Schema) *TypeModel {
if (schema.Type == nil) || (*schema.Type.String == "object") {
return domain.buildTypeForDefinitionObject(typeName, propertyName, schema)
}
return nil
}
func (domain *Domain) buildTypeForDefinitionObject(
typeName string,
propertyName string,
schema *jsonschema.Schema) *TypeModel {
typeModel := NewTypeModel()
typeModel.Name = typeName
if schema.IsEmpty() {
domain.buildDefaultAccessors(typeModel, schema)
} else {
if schema.Description != nil {
typeModel.Description = *schema.Description
}
domain.buildTypeProperties(typeModel, schema)
domain.buildTypeRequirements(typeModel, schema)
domain.buildPatternPropertyAccessors(typeModel, schema)
domain.buildAdditionalPropertyAccessors(typeModel, schema)
domain.buildOneOfAccessors(typeModel, schema)
domain.buildAnyOfAccessors(typeModel, schema)
}
return typeModel
}
// Build builds a domain model.
func (domain *Domain) Build() (err error) {
if (domain.Schema == nil) || (domain.Schema.Definitions == nil) {
return errors.New("missing definitions section")
}
// create a type for the top-level schema
typeName := domain.Prefix + "Document"
typeModel := NewTypeModel()
typeModel.Name = typeName
domain.buildTypeProperties(typeModel, domain.Schema)
domain.buildTypeRequirements(typeModel, domain.Schema)
domain.buildPatternPropertyAccessors(typeModel, domain.Schema)
domain.buildAdditionalPropertyAccessors(typeModel, domain.Schema)
domain.buildOneOfAccessors(typeModel, domain.Schema)
domain.buildAnyOfAccessors(typeModel, domain.Schema)
if len(typeModel.Properties) > 0 {
domain.TypeModels[typeName] = typeModel
}
// create a type for each object defined in the schema
if domain.Schema.Definitions != nil {
for _, pair := range *(domain.Schema.Definitions) {
definitionName := pair.Name
definitionSchema := pair.Value
typeName := domain.TypeNameForStub(definitionName)
typeModel := domain.BuildTypeForDefinition(typeName, definitionName, definitionSchema)
if typeModel != nil {
domain.TypeModels[typeName] = typeModel
}
}
}
// iterate over anonymous object types to be instantiated and generate a type for each
for typeName, typeRequest := range domain.ObjectTypeRequests {
domain.TypeModels[typeRequest.Name] =
domain.buildTypeForDefinitionObject(typeName, typeRequest.PropertyName, typeRequest.Schema)
}
// iterate over map item types to be instantiated and generate a type for each
mapTypeNames := make([]string, 0)
for mapTypeName := range domain.MapTypeRequests {
mapTypeNames = append(mapTypeNames, mapTypeName)
}
sort.Strings(mapTypeNames)
for _, mapTypeName := range mapTypeNames {
typeName := "Named" + strings.Title(mapTypeName)
typeModel := NewTypeModel()
typeModel.Name = typeName
typeModel.Description = fmt.Sprintf(
"Automatically-generated message used to represent maps of %s as ordered (name,value) pairs.",
mapTypeName)
typeModel.IsPair = true
typeModel.PairValueType = mapTypeName
nameProperty := NewTypeProperty()
nameProperty.Name = "name"
nameProperty.Type = "string"
nameProperty.Description = "Map key"
typeModel.addProperty(nameProperty)
valueProperty := NewTypeProperty()
valueProperty.Name = "value"
valueProperty.Type = mapTypeName
valueProperty.Description = "Mapped value"
typeModel.addProperty(valueProperty)
domain.TypeModels[typeName] = typeModel
}
// add a type for string arrays
stringArrayType := NewTypeModel()
stringArrayType.Name = "StringArray"
stringProperty := NewTypeProperty()
stringProperty.Name = "value"
stringProperty.Type = "string"
stringProperty.Repeated = true
stringArrayType.addProperty(stringProperty)
domain.TypeModels[stringArrayType.Name] = stringArrayType
// add a type for "Any"
anyType := NewTypeModel()
anyType.Name = "Any"
anyType.Open = true
anyType.IsBlob = true
valueProperty := NewTypeProperty()
valueProperty.Name = "value"
valueProperty.Type = "google.protobuf.Any"
anyType.addProperty(valueProperty)
yamlProperty := NewTypeProperty()
yamlProperty.Name = "yaml"
yamlProperty.Type = "string"
anyType.addProperty(yamlProperty)
domain.TypeModels[anyType.Name] = anyType
return err
}
func (domain *Domain) sortedTypeNames() []string {
typeNames := make([]string, 0)
for typeName := range domain.TypeModels {
typeNames = append(typeNames, typeName)
}
sort.Strings(typeNames)
return typeNames
}
// Description returns a string representation of a domain.
func (domain *Domain) Description() string {
typeNames := domain.sortedTypeNames()
result := ""
for _, typeName := range typeNames {
result += domain.TypeModels[typeName].description()
}
return result
}