From 42729b7562cfcdd7fe554a381c48360ca63c6932 Mon Sep 17 00:00:00 2001 From: Lunny Xiao Date: Wed, 26 Jun 2019 16:51:32 +0800 Subject: [PATCH] fix API link header (#7298) --- modules/context/api.go | 41 ++++++++++++++++++++++++----- modules/context/api_test.go | 51 +++++++++++++++++++++++++++++++++++++ 2 files changed, 85 insertions(+), 7 deletions(-) create mode 100644 modules/context/api_test.go diff --git a/modules/context/api.go b/modules/context/api.go index 9be3fb512cf..0b2f81fd646 100644 --- a/modules/context/api.go +++ b/modules/context/api.go @@ -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, ",")) diff --git a/modules/context/api_test.go b/modules/context/api_test.go new file mode 100644 index 00000000000..e7e3e230afe --- /dev/null +++ b/modules/context/api_test.go @@ -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": { + `; rel="next"`, + `; rel="last"`, + }, + "api/v1/repos/jerrykan/example-repo/issues?state=all&page=1": { + `; rel="next"`, + `; rel="last"`, + }, + "api/v1/repos/jerrykan/example-repo/issues?state=all&page=2": { + `; rel="next"`, + `; rel="last"`, + `; rel="first"`, + `; rel="prev"`, + }, + "api/v1/repos/jerrykan/example-repo/issues?state=all&page=5": { + `; rel="first"`, + `; 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) + } +}