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1// Copyright 2015 go-swagger maintainers
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package spec
16
17import (
18"bytes"
19"encoding/gob"
20"encoding/json"
21"sort"
22
23"github.com/go-openapi/jsonpointer"
24"github.com/go-openapi/swag"
25)
26
27func init() {
28gob.Register(map[string]interface{}{})
29gob.Register([]interface{}{})
30}
31
32// OperationProps describes an operation
33//
34// NOTES:
35// - schemes, when present must be from [http, https, ws, wss]: see validate
36// - Security is handled as a special case: see MarshalJSON function
37type OperationProps struct {
38Description string `json:"description,omitempty"`
39Consumes []string `json:"consumes,omitempty"`
40Produces []string `json:"produces,omitempty"`
41Schemes []string `json:"schemes,omitempty"`
42Tags []string `json:"tags,omitempty"`
43Summary string `json:"summary,omitempty"`
44ExternalDocs *ExternalDocumentation `json:"externalDocs,omitempty"`
45ID string `json:"operationId,omitempty"`
46Deprecated bool `json:"deprecated,omitempty"`
47Security []map[string][]string `json:"security,omitempty"`
48Parameters []Parameter `json:"parameters,omitempty"`
49Responses *Responses `json:"responses,omitempty"`
50}
51
52// MarshalJSON takes care of serializing operation properties to JSON
53//
54// We use a custom marhaller here to handle a special cases related to
55// the Security field. We need to preserve zero length slice
56// while omitting the field when the value is nil/unset.
57func (op OperationProps) MarshalJSON() ([]byte, error) {
58type Alias OperationProps
59if op.Security == nil {
60return json.Marshal(&struct {
61Security []map[string][]string `json:"security,omitempty"`
62*Alias
63}{
64Security: op.Security,
65Alias: (*Alias)(&op),
66})
67}
68return json.Marshal(&struct {
69Security []map[string][]string `json:"security"`
70*Alias
71}{
72Security: op.Security,
73Alias: (*Alias)(&op),
74})
75}
76
77// Operation describes a single API operation on a path.
78//
79// For more information: http://goo.gl/8us55a#operationObject
80type Operation struct {
81VendorExtensible
82OperationProps
83}
84
85// SuccessResponse gets a success response model
86func (o *Operation) SuccessResponse() (*Response, int, bool) {
87if o.Responses == nil {
88return nil, 0, false
89}
90
91responseCodes := make([]int, 0, len(o.Responses.StatusCodeResponses))
92for k := range o.Responses.StatusCodeResponses {
93if k >= 200 && k < 300 {
94responseCodes = append(responseCodes, k)
95}
96}
97if len(responseCodes) > 0 {
98sort.Ints(responseCodes)
99v := o.Responses.StatusCodeResponses[responseCodes[0]]
100return &v, responseCodes[0], true
101}
102
103return o.Responses.Default, 0, false
104}
105
106// JSONLookup look up a value by the json property name
107func (o Operation) JSONLookup(token string) (interface{}, error) {
108if ex, ok := o.Extensions[token]; ok {
109return &ex, nil
110}
111r, _, err := jsonpointer.GetForToken(o.OperationProps, token)
112return r, err
113}
114
115// UnmarshalJSON hydrates this items instance with the data from JSON
116func (o *Operation) UnmarshalJSON(data []byte) error {
117if err := json.Unmarshal(data, &o.OperationProps); err != nil {
118return err
119}
120return json.Unmarshal(data, &o.VendorExtensible)
121}
122
123// MarshalJSON converts this items object to JSON
124func (o Operation) MarshalJSON() ([]byte, error) {
125b1, err := json.Marshal(o.OperationProps)
126if err != nil {
127return nil, err
128}
129b2, err := json.Marshal(o.VendorExtensible)
130if err != nil {
131return nil, err
132}
133concated := swag.ConcatJSON(b1, b2)
134return concated, nil
135}
136
137// NewOperation creates a new operation instance.
138// It expects an ID as parameter but not passing an ID is also valid.
139func NewOperation(id string) *Operation {
140op := new(Operation)
141op.ID = id
142return op
143}
144
145// WithID sets the ID property on this operation, allows for chaining.
146func (o *Operation) WithID(id string) *Operation {
147o.ID = id
148return o
149}
150
151// WithDescription sets the description on this operation, allows for chaining
152func (o *Operation) WithDescription(description string) *Operation {
153o.Description = description
154return o
155}
156
157// WithSummary sets the summary on this operation, allows for chaining
158func (o *Operation) WithSummary(summary string) *Operation {
159o.Summary = summary
160return o
161}
162
163// WithExternalDocs sets/removes the external docs for/from this operation.
164// When you pass empty strings as params the external documents will be removed.
165// When you pass non-empty string as one value then those values will be used on the external docs object.
166// So when you pass a non-empty description, you should also pass the url and vice versa.
167func (o *Operation) WithExternalDocs(description, url string) *Operation {
168if description == "" && url == "" {
169o.ExternalDocs = nil
170return o
171}
172
173if o.ExternalDocs == nil {
174o.ExternalDocs = &ExternalDocumentation{}
175}
176o.ExternalDocs.Description = description
177o.ExternalDocs.URL = url
178return o
179}
180
181// Deprecate marks the operation as deprecated
182func (o *Operation) Deprecate() *Operation {
183o.Deprecated = true
184return o
185}
186
187// Undeprecate marks the operation as not deprected
188func (o *Operation) Undeprecate() *Operation {
189o.Deprecated = false
190return o
191}
192
193// WithConsumes adds media types for incoming body values
194func (o *Operation) WithConsumes(mediaTypes ...string) *Operation {
195o.Consumes = append(o.Consumes, mediaTypes...)
196return o
197}
198
199// WithProduces adds media types for outgoing body values
200func (o *Operation) WithProduces(mediaTypes ...string) *Operation {
201o.Produces = append(o.Produces, mediaTypes...)
202return o
203}
204
205// WithTags adds tags for this operation
206func (o *Operation) WithTags(tags ...string) *Operation {
207o.Tags = append(o.Tags, tags...)
208return o
209}
210
211// AddParam adds a parameter to this operation, when a parameter for that location
212// and with that name already exists it will be replaced
213func (o *Operation) AddParam(param *Parameter) *Operation {
214if param == nil {
215return o
216}
217
218for i, p := range o.Parameters {
219if p.Name == param.Name && p.In == param.In {
220params := append(o.Parameters[:i], *param)
221params = append(params, o.Parameters[i+1:]...)
222o.Parameters = params
223return o
224}
225}
226
227o.Parameters = append(o.Parameters, *param)
228return o
229}
230
231// RemoveParam removes a parameter from the operation
232func (o *Operation) RemoveParam(name, in string) *Operation {
233for i, p := range o.Parameters {
234if p.Name == name && p.In == in {
235o.Parameters = append(o.Parameters[:i], o.Parameters[i+1:]...)
236return o
237}
238}
239return o
240}
241
242// SecuredWith adds a security scope to this operation.
243func (o *Operation) SecuredWith(name string, scopes ...string) *Operation {
244o.Security = append(o.Security, map[string][]string{name: scopes})
245return o
246}
247
248// WithDefaultResponse adds a default response to the operation.
249// Passing a nil value will remove the response
250func (o *Operation) WithDefaultResponse(response *Response) *Operation {
251return o.RespondsWith(0, response)
252}
253
254// RespondsWith adds a status code response to the operation.
255// When the code is 0 the value of the response will be used as default response value.
256// When the value of the response is nil it will be removed from the operation
257func (o *Operation) RespondsWith(code int, response *Response) *Operation {
258if o.Responses == nil {
259o.Responses = new(Responses)
260}
261if code == 0 {
262o.Responses.Default = response
263return o
264}
265if response == nil {
266delete(o.Responses.StatusCodeResponses, code)
267return o
268}
269if o.Responses.StatusCodeResponses == nil {
270o.Responses.StatusCodeResponses = make(map[int]Response)
271}
272o.Responses.StatusCodeResponses[code] = *response
273return o
274}
275
276type opsAlias OperationProps
277
278type gobAlias struct {
279Security []map[string]struct {
280List []string
281Pad bool
282}
283Alias *opsAlias
284SecurityIsEmpty bool
285}
286
287// GobEncode provides a safe gob encoder for Operation, including empty security requirements
288func (o Operation) GobEncode() ([]byte, error) {
289raw := struct {
290Ext VendorExtensible
291Props OperationProps
292}{
293Ext: o.VendorExtensible,
294Props: o.OperationProps,
295}
296var b bytes.Buffer
297err := gob.NewEncoder(&b).Encode(raw)
298return b.Bytes(), err
299}
300
301// GobDecode provides a safe gob decoder for Operation, including empty security requirements
302func (o *Operation) GobDecode(b []byte) error {
303var raw struct {
304Ext VendorExtensible
305Props OperationProps
306}
307
308buf := bytes.NewBuffer(b)
309err := gob.NewDecoder(buf).Decode(&raw)
310if err != nil {
311return err
312}
313o.VendorExtensible = raw.Ext
314o.OperationProps = raw.Props
315return nil
316}
317
318// GobEncode provides a safe gob encoder for Operation, including empty security requirements
319func (op OperationProps) GobEncode() ([]byte, error) {
320raw := gobAlias{
321Alias: (*opsAlias)(&op),
322}
323
324var b bytes.Buffer
325if op.Security == nil {
326// nil security requirement
327err := gob.NewEncoder(&b).Encode(raw)
328return b.Bytes(), err
329}
330
331if len(op.Security) == 0 {
332// empty, but non-nil security requirement
333raw.SecurityIsEmpty = true
334raw.Alias.Security = nil
335err := gob.NewEncoder(&b).Encode(raw)
336return b.Bytes(), err
337}
338
339raw.Security = make([]map[string]struct {
340List []string
341Pad bool
342}, 0, len(op.Security))
343for _, req := range op.Security {
344v := make(map[string]struct {
345List []string
346Pad bool
347}, len(req))
348for k, val := range req {
349v[k] = struct {
350List []string
351Pad bool
352}{
353List: val,
354}
355}
356raw.Security = append(raw.Security, v)
357}
358
359err := gob.NewEncoder(&b).Encode(raw)
360return b.Bytes(), err
361}
362
363// GobDecode provides a safe gob decoder for Operation, including empty security requirements
364func (op *OperationProps) GobDecode(b []byte) error {
365var raw gobAlias
366
367buf := bytes.NewBuffer(b)
368err := gob.NewDecoder(buf).Decode(&raw)
369if err != nil {
370return err
371}
372if raw.Alias == nil {
373return nil
374}
375
376switch {
377case raw.SecurityIsEmpty:
378// empty, but non-nil security requirement
379raw.Alias.Security = []map[string][]string{}
380case len(raw.Alias.Security) == 0:
381// nil security requirement
382raw.Alias.Security = nil
383default:
384raw.Alias.Security = make([]map[string][]string, 0, len(raw.Security))
385for _, req := range raw.Security {
386v := make(map[string][]string, len(req))
387for k, val := range req {
388v[k] = make([]string, 0, len(val.List))
389v[k] = append(v[k], val.List...)
390}
391raw.Alias.Security = append(raw.Alias.Security, v)
392}
393}
394
395*op = *(*OperationProps)(raw.Alias)
396return nil
397}
398