152
// decodeLink decodes the Nexus-Link header values.
153
// It must have the same format of HTTP Link header: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Link
155
>
var link nexus.Link
156
>
encodedLink = strings.TrimSpace(encodedLink)
157
>
if len(encodedLink) == 0 {
158
return link, errors.New("failed to parse link header: value is empty")
159
}
160
162
return link, fmt.Errorf("failed to parse link header: invalid format: %s", encodedLink)
163
}
165
>
if urlEnd == -1 {
166
return link, fmt.Errorf("failed to parse link header: invalid format: %s", encodedLink)
167
}
169
>
if len(urlStr) == 0 {
170
return link, errors.New("failed to parse link header: url is empty")
171
}
173
>
if err != nil {
174
return link, fmt.Errorf("failed to parse link header: invalid url: %s", urlStr)
175
}
177
return link, fmt.Errorf("failed to parse link header: %w", err)
178
}
180
>
181
>
params := strings.Split(encodedLink[urlEnd+1:], ";")
182
>
// must contain at least one semi-colon, and first param must be empty since
183
>
// it corresponds to the url part parsed above.
184
>
if len(params) < 2 {
185
return link, fmt.Errorf("failed to parse link header: invalid format: %s", encodedLink)
186
}
188
return link, fmt.Errorf("failed to parse link header: invalid format: %s", encodedLink)
189
}
190
192
>
for _, param := range params[1:] {
193
>
param = strings.TrimSpace(param)
194
>
if len(param) == 0 {
195
>
return link, fmt.Errorf("failed to parse link header: parameter is empty: %s", encodedLink)
api.go
196
>
}
197
kv := strings.SplitN(param, "=", 2)
198
if len(kv) != 2 {