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fix API link header (#7298)

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This commit is contained in:
Lunny Xiao 2019-06-26 16:51:32 +08:00 committed by GitHub
parent 5908bb1030
commit 42729b7562
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 85 additions and 7 deletions
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41
modules/context/api.go
View File

@ -7,6 +7,7 @@ package context
import (
"fmt"
"net/url"
"strings"
"github.com/go-macaron/csrf"
@ -77,23 +78,49 @@ func (ctx *APIContext) Error(status int, title string, obj interface{}) {
})
}
// SetLinkHeader sets pagination link header by given total number and page size.
func (ctx *APIContext) SetLinkHeader(total, pageSize int) {
page := NewPagination(total, pageSize, ctx.QueryInt("page"), 0)
func genAPILinks(curURL *url.URL, total, pageSize, curPage int) []string {
page := NewPagination(total, pageSize, curPage, 0)
paginater := page.Paginater
links := make([]string, 0, 4)
if paginater.HasNext() {
links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"next\"", setting.AppURL, ctx.Req.URL.Path[1:], paginater.Next()))
u := *curURL
queries := u.Query()
queries.Set("page", fmt.Sprintf("%d", paginater.Next()))
u.RawQuery = queries.Encode()
links = append(links, fmt.Sprintf("<%s%s>; rel=\"next\"", setting.AppURL, u.RequestURI()[1:]))
}
if !paginater.IsLast() {
links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"last\"", setting.AppURL, ctx.Req.URL.Path[1:], paginater.TotalPages()))
u := *curURL
queries := u.Query()
queries.Set("page", fmt.Sprintf("%d", paginater.TotalPages()))
u.RawQuery = queries.Encode()
links = append(links, fmt.Sprintf("<%s%s>; rel=\"last\"", setting.AppURL, u.RequestURI()[1:]))
}
if !paginater.IsFirst() {
links = append(links, fmt.Sprintf("<%s%s?page=1>; rel=\"first\"", setting.AppURL, ctx.Req.URL.Path[1:]))
u := *curURL
queries := u.Query()
queries.Set("page", "1")
u.RawQuery = queries.Encode()
links = append(links, fmt.Sprintf("<%s%s>; rel=\"first\"", setting.AppURL, u.RequestURI()[1:]))
}
if paginater.HasPrevious() {
links = append(links, fmt.Sprintf("<%s%s?page=%d>; rel=\"prev\"", setting.AppURL, ctx.Req.URL.Path[1:], paginater.Previous()))
u := *curURL
queries := u.Query()
queries.Set("page", fmt.Sprintf("%d", paginater.Previous()))
u.RawQuery = queries.Encode()
links = append(links, fmt.Sprintf("<%s%s>; rel=\"prev\"", setting.AppURL, u.RequestURI()[1:]))
}
return links
}
// SetLinkHeader sets pagination link header by given total number and page size.
func (ctx *APIContext) SetLinkHeader(total, pageSize int) {
links := genAPILinks(ctx.Req.URL, total, pageSize, ctx.QueryInt("page"))
if len(links) > 0 {
ctx.Header().Set("Link", strings.Join(links, ","))

51
modules/context/api_test.go Normal file
View File

@ -0,0 +1,51 @@
// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package context
import (
"net/url"
"strconv"
"testing"
"code.gitea.io/gitea/modules/setting"
"github.com/stretchr/testify/assert"
)
func TestGenAPILinks(t *testing.T) {
setting.AppURL = "http://localhost:3000/"
var kases = map[string][]string{
"api/v1/repos/jerrykan/example-repo/issues?state=all": {
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=2&state=all>; rel="next"`,
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=5&state=all>; rel="last"`,
},
"api/v1/repos/jerrykan/example-repo/issues?state=all&page=1": {
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=2&state=all>; rel="next"`,
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=5&state=all>; rel="last"`,
},
"api/v1/repos/jerrykan/example-repo/issues?state=all&page=2": {
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=3&state=all>; rel="next"`,
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=5&state=all>; rel="last"`,
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=1&state=all>; rel="first"`,
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=1&state=all>; rel="prev"`,
},
"api/v1/repos/jerrykan/example-repo/issues?state=all&page=5": {
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=1&state=all>; rel="first"`,
`<http://localhost:3000/api/v1/repos/jerrykan/example-repo/issues?page=4&state=all>; rel="prev"`,
},
}
for req, response := range kases {
u, err := url.Parse(setting.AppURL + req)
assert.NoError(t, err)
p := u.Query().Get("page")
curPage, _ := strconv.Atoi(p)
links := genAPILinks(u, 100, 20, curPage)
assert.EqualValues(t, links, response)
}
}