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package openapi3
import (
"context"
"encoding/json"
"errors"
"fmt"
)
// Link is specified by OpenAPI/Swagger standard version 3.
// See https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.3.md#link-object
type Link struct {
Extensions map[string]interface{} `json:"-" yaml:"-"`
OperationRef string `json:"operationRef,omitempty" yaml:"operationRef,omitempty"`
OperationID string `json:"operationId,omitempty" yaml:"operationId,omitempty"`
Description string `json:"description,omitempty" yaml:"description,omitempty"`
Parameters map[string]interface{} `json:"parameters,omitempty" yaml:"parameters,omitempty"`
Server *Server `json:"server,omitempty" yaml:"server,omitempty"`
RequestBody interface{} `json:"requestBody,omitempty" yaml:"requestBody,omitempty"`
}
// MarshalJSON returns the JSON encoding of Link.
func (link Link) MarshalJSON() ([]byte, error) {
m := make(map[string]interface{}, 6+len(link.Extensions))
for k, v := range link.Extensions {
m[k] = v
}
if x := link.OperationRef; x != "" {
m["operationRef"] = x
}
if x := link.OperationID; x != "" {
m["operationId"] = x
}
if x := link.Description; x != "" {
m["description"] = x
}
if x := link.Parameters; len(x) != 0 {
m["parameters"] = x
}
if x := link.Server; x != nil {
m["server"] = x
}
if x := link.RequestBody; x != nil {
m["requestBody"] = x
}
return json.Marshal(m)
}
// UnmarshalJSON sets Link to a copy of data.
func (link *Link) UnmarshalJSON(data []byte) error {
type LinkBis Link
var x LinkBis
if err := json.Unmarshal(data, &x); err != nil {
return unmarshalError(err)
}
_ = json.Unmarshal(data, &x.Extensions)
delete(x.Extensions, "operationRef")
delete(x.Extensions, "operationId")
delete(x.Extensions, "description")
delete(x.Extensions, "parameters")
delete(x.Extensions, "server")
delete(x.Extensions, "requestBody")
if len(x.Extensions) == 0 {
x.Extensions = nil
}
*link = Link(x)
return nil
}
// Validate returns an error if Link does not comply with the OpenAPI spec.
func (link *Link) Validate(ctx context.Context, opts ...ValidationOption) error {
ctx = WithValidationOptions(ctx, opts...)
if link.OperationID == "" && link.OperationRef == "" {
return errors.New("missing operationId or operationRef on link")
}
if link.OperationID != "" && link.OperationRef != "" {
return fmt.Errorf("operationId %q and operationRef %q are mutually exclusive", link.OperationID, link.OperationRef)
}
return validateExtensions(ctx, link.Extensions)
}
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