303 lines
10 KiB
Go
303 lines
10 KiB
Go
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// Copyright 2015 go-swagger maintainers
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package spec
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import (
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"encoding/json"
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"strings"
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"github.com/go-openapi/jsonpointer"
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"github.com/go-openapi/swag"
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)
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// QueryParam creates a query parameter
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func QueryParam(name string) *Parameter {
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return &Parameter{ParamProps: ParamProps{Name: name, In: "query"}}
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}
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// HeaderParam creates a header parameter, this is always required by default
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func HeaderParam(name string) *Parameter {
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return &Parameter{ParamProps: ParamProps{Name: name, In: "header", Required: true}}
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}
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// PathParam creates a path parameter, this is always required
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func PathParam(name string) *Parameter {
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return &Parameter{ParamProps: ParamProps{Name: name, In: "path", Required: true}}
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}
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// BodyParam creates a body parameter
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func BodyParam(name string, schema *Schema) *Parameter {
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return &Parameter{ParamProps: ParamProps{Name: name, In: "body", Schema: schema}, SimpleSchema: SimpleSchema{Type: "object"}}
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}
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// FormDataParam creates a body parameter
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func FormDataParam(name string) *Parameter {
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return &Parameter{ParamProps: ParamProps{Name: name, In: "formData"}}
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}
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// FileParam creates a body parameter
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func FileParam(name string) *Parameter {
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return &Parameter{ParamProps: ParamProps{Name: name, In: "formData"}, SimpleSchema: SimpleSchema{Type: "file"}}
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}
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// SimpleArrayParam creates a param for a simple array (string, int, date etc)
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func SimpleArrayParam(name, tpe, fmt string) *Parameter {
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return &Parameter{ParamProps: ParamProps{Name: name}, SimpleSchema: SimpleSchema{Type: "array", CollectionFormat: "csv", Items: &Items{SimpleSchema: SimpleSchema{Type: "string", Format: fmt}}}}
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}
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// ParamRef creates a parameter that's a json reference
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func ParamRef(uri string) *Parameter {
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p := new(Parameter)
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p.Ref = MustCreateRef(uri)
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return p
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}
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// ParamProps describes the specific attributes of an operation parameter
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type ParamProps struct {
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Description string `json:"description,omitempty"`
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Name string `json:"name,omitempty"`
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In string `json:"in,omitempty"`
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Required bool `json:"required,omitempty"`
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Schema *Schema `json:"schema,omitempty"` // when in == "body"
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AllowEmptyValue bool `json:"allowEmptyValue,omitempty"` // when in == "query" || "formData"
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}
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// Parameter a unique parameter is defined by a combination of a [name](#parameterName) and [location](#parameterIn).
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//
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// There are five possible parameter types.
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// * Path - Used together with [Path Templating](#pathTemplating), where the parameter value is actually part of the operation's URL. This does not include the host or base path of the API. For example, in `/items/{itemId}`, the path parameter is `itemId`.
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// * Query - Parameters that are appended to the URL. For example, in `/items?id=###`, the query parameter is `id`.
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// * Header - Custom headers that are expected as part of the request.
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// * Body - The payload that's appended to the HTTP request. Since there can only be one payload, there can only be *one* body parameter. The name of the body parameter has no effect on the parameter itself and is used for documentation purposes only. Since Form parameters are also in the payload, body and form parameters cannot exist together for the same operation.
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// * Form - Used to describe the payload of an HTTP request when either `application/x-www-form-urlencoded` or `multipart/form-data` are used as the content type of the request (in Swagger's definition, the [`consumes`](#operationConsumes) property of an operation). This is the only parameter type that can be used to send files, thus supporting the `file` type. Since form parameters are sent in the payload, they cannot be declared together with a body parameter for the same operation. Form parameters have a different format based on the content-type used (for further details, consult http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4):
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// * `application/x-www-form-urlencoded` - Similar to the format of Query parameters but as a payload. For example, `foo=1&bar=swagger` - both `foo` and `bar` are form parameters. This is normally used for simple parameters that are being transferred.
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// * `multipart/form-data` - each parameter takes a section in the payload with an internal header. For example, for the header `Content-Disposition: form-data; name="submit-name"` the name of the parameter is `submit-name`. This type of form parameters is more commonly used for file transfers.
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//
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// For more information: http://goo.gl/8us55a#parameterObject
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type Parameter struct {
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Refable
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CommonValidations
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SimpleSchema
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VendorExtensible
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ParamProps
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}
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// JSONLookup look up a value by the json property name
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func (p Parameter) JSONLookup(token string) (interface{}, error) {
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if ex, ok := p.Extensions[token]; ok {
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return &ex, nil
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}
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if token == "$ref" {
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return &p.Ref, nil
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}
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r, _, err := jsonpointer.GetForToken(p.CommonValidations, token)
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if err != nil && !strings.HasPrefix(err.Error(), "object has no field") {
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return nil, err
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}
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if r != nil {
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return r, nil
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}
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r, _, err = jsonpointer.GetForToken(p.SimpleSchema, token)
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if err != nil && !strings.HasPrefix(err.Error(), "object has no field") {
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return nil, err
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}
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if r != nil {
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return r, nil
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}
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r, _, err = jsonpointer.GetForToken(p.ParamProps, token)
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return r, err
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}
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// WithDescription a fluent builder method for the description of the parameter
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func (p *Parameter) WithDescription(description string) *Parameter {
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p.Description = description
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return p
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}
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// Named a fluent builder method to override the name of the parameter
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func (p *Parameter) Named(name string) *Parameter {
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p.Name = name
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return p
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}
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// WithLocation a fluent builder method to override the location of the parameter
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func (p *Parameter) WithLocation(in string) *Parameter {
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p.In = in
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return p
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}
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// Typed a fluent builder method for the type of the parameter value
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func (p *Parameter) Typed(tpe, format string) *Parameter {
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p.Type = tpe
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p.Format = format
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return p
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}
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// CollectionOf a fluent builder method for an array parameter
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func (p *Parameter) CollectionOf(items *Items, format string) *Parameter {
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p.Type = "array"
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p.Items = items
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p.CollectionFormat = format
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return p
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}
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// WithDefault sets the default value on this parameter
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func (p *Parameter) WithDefault(defaultValue interface{}) *Parameter {
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p.AsOptional() // with default implies optional
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p.Default = defaultValue
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return p
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}
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// AllowsEmptyValues flags this parameter as being ok with empty values
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func (p *Parameter) AllowsEmptyValues() *Parameter {
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p.AllowEmptyValue = true
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return p
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}
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// NoEmptyValues flags this parameter as not liking empty values
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func (p *Parameter) NoEmptyValues() *Parameter {
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p.AllowEmptyValue = false
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return p
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}
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// AsOptional flags this parameter as optional
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func (p *Parameter) AsOptional() *Parameter {
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p.Required = false
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return p
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}
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// AsRequired flags this parameter as required
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func (p *Parameter) AsRequired() *Parameter {
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if p.Default != nil { // with a default required makes no sense
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return p
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}
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p.Required = true
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return p
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}
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// WithMaxLength sets a max length value
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func (p *Parameter) WithMaxLength(max int64) *Parameter {
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p.MaxLength = &max
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return p
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}
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// WithMinLength sets a min length value
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func (p *Parameter) WithMinLength(min int64) *Parameter {
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p.MinLength = &min
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return p
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}
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// WithPattern sets a pattern value
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func (p *Parameter) WithPattern(pattern string) *Parameter {
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p.Pattern = pattern
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return p
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}
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// WithMultipleOf sets a multiple of value
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func (p *Parameter) WithMultipleOf(number float64) *Parameter {
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p.MultipleOf = &number
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return p
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}
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// WithMaximum sets a maximum number value
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func (p *Parameter) WithMaximum(max float64, exclusive bool) *Parameter {
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p.Maximum = &max
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p.ExclusiveMaximum = exclusive
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return p
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}
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// WithMinimum sets a minimum number value
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func (p *Parameter) WithMinimum(min float64, exclusive bool) *Parameter {
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p.Minimum = &min
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p.ExclusiveMinimum = exclusive
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return p
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}
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// WithEnum sets a the enum values (replace)
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func (p *Parameter) WithEnum(values ...interface{}) *Parameter {
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p.Enum = append([]interface{}{}, values...)
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return p
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}
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// WithMaxItems sets the max items
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func (p *Parameter) WithMaxItems(size int64) *Parameter {
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p.MaxItems = &size
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return p
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}
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// WithMinItems sets the min items
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func (p *Parameter) WithMinItems(size int64) *Parameter {
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p.MinItems = &size
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return p
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}
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// UniqueValues dictates that this array can only have unique items
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func (p *Parameter) UniqueValues() *Parameter {
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p.UniqueItems = true
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return p
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}
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// AllowDuplicates this array can have duplicates
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func (p *Parameter) AllowDuplicates() *Parameter {
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p.UniqueItems = false
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return p
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}
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// UnmarshalJSON hydrates this items instance with the data from JSON
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func (p *Parameter) UnmarshalJSON(data []byte) error {
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if err := json.Unmarshal(data, &p.CommonValidations); err != nil {
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return err
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}
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if err := json.Unmarshal(data, &p.Refable); err != nil {
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return err
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}
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if err := json.Unmarshal(data, &p.SimpleSchema); err != nil {
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return err
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}
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if err := json.Unmarshal(data, &p.VendorExtensible); err != nil {
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return err
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}
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if err := json.Unmarshal(data, &p.ParamProps); err != nil {
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return err
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}
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return nil
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}
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// MarshalJSON converts this items object to JSON
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func (p Parameter) MarshalJSON() ([]byte, error) {
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b1, err := json.Marshal(p.CommonValidations)
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if err != nil {
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return nil, err
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}
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b2, err := json.Marshal(p.SimpleSchema)
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if err != nil {
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return nil, err
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}
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b3, err := json.Marshal(p.Refable)
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if err != nil {
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return nil, err
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}
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b4, err := json.Marshal(p.VendorExtensible)
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if err != nil {
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return nil, err
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}
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b5, err := json.Marshal(p.ParamProps)
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if err != nil {
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return nil, err
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}
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return swag.ConcatJSON(b3, b1, b2, b4, b5), nil
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}
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