pages-server/server/gitea/client.go

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package gitea
import (
"errors"
"fmt"
"net/url"
"strings"
"time"
"github.com/valyala/fasthttp"
"github.com/valyala/fastjson"
)
const giteaAPIRepos = "/api/v1/repos/"
var ErrorNotFound = errors.New("not found")
type Client struct {
giteaRoot string
giteaAPIToken string
fastClient *fasthttp.Client
infoTimeout time.Duration
contentTimeout time.Duration
}
type FileResponse struct {
Exists bool
ETag []byte
MimeType string
Body []byte
}
// TODO: once golang v1.19 is min requirement, we can switch to 'JoinPath()' of 'net/url' package
func joinURL(baseURL string, paths ...string) string {
p := make([]string, 0, len(paths))
for i := range paths {
path := strings.TrimSpace(paths[i])
path = strings.Trim(path, "/")
if len(path) != 0 {
p = append(p, path)
}
}
return baseURL + "/" + strings.Join(p, "/")
}
func (f FileResponse) IsEmpty() bool { return len(f.Body) != 0 }
func NewClient(giteaRoot, giteaAPIToken string) (*Client, error) {
rootURL, err := url.Parse(giteaRoot)
giteaRoot = strings.Trim(rootURL.String(), "/")
return &Client{
giteaRoot: giteaRoot,
giteaAPIToken: giteaAPIToken,
infoTimeout: 5 * time.Second,
contentTimeout: 10 * time.Second,
fastClient: getFastHTTPClient(),
}, err
}
func (client *Client) GiteaRawContent(targetOwner, targetRepo, ref, resource string) ([]byte, error) {
url := joinURL(client.giteaRoot, giteaAPIRepos, targetOwner, targetRepo, "raw", resource+"?ref="+url.QueryEscape(ref))
res, err := client.do(client.contentTimeout, url)
if err != nil {
return nil, err
}
switch res.StatusCode() {
case fasthttp.StatusOK:
return res.Body(), nil
case fasthttp.StatusNotFound:
return nil, ErrorNotFound
default:
return nil, fmt.Errorf("unexpected status code '%d'", res.StatusCode())
}
}
func (client *Client) ServeRawContent(uri string) (*fasthttp.Response, error) {
url := joinURL(client.giteaRoot, giteaAPIRepos, uri)
res, err := client.do(client.contentTimeout, url)
if err != nil {
return nil, err
}
// resp.SetBodyStream(&strings.Reader{}, -1)
if err != nil {
return nil, err
}
switch res.StatusCode() {
case fasthttp.StatusOK:
return res, nil
case fasthttp.StatusNotFound:
return nil, ErrorNotFound
default:
return nil, fmt.Errorf("unexpected status code '%d'", res.StatusCode())
}
}
func (client *Client) GiteaGetRepoBranchTimestamp(repoOwner, repoName, branchName string) (time.Time, error) {
url := joinURL(client.giteaRoot, giteaAPIRepos, repoOwner, repoName, "branches", branchName)
res, err := client.do(client.infoTimeout, url)
if err != nil {
return time.Time{}, err
}
if res.StatusCode() != fasthttp.StatusOK {
return time.Time{}, fmt.Errorf("unexpected status code '%d'", res.StatusCode())
}
return time.Parse(time.RFC3339, fastjson.GetString(res.Body(), "commit", "timestamp"))
}
func (client *Client) GiteaGetRepoDefaultBranch(repoOwner, repoName string) (string, error) {
url := joinURL(client.giteaRoot, giteaAPIRepos, repoOwner, repoName)
res, err := client.do(client.infoTimeout, url)
if err != nil {
return "", err
}
if res.StatusCode() != fasthttp.StatusOK {
return "", fmt.Errorf("unexpected status code '%d'", res.StatusCode())
}
return fastjson.GetString(res.Body(), "default_branch"), nil
}
func (client *Client) do(timeout time.Duration, url string) (*fasthttp.Response, error) {
req := fasthttp.AcquireRequest()
req.SetRequestURI(url)
req.Header.Set(fasthttp.HeaderAuthorization, "token "+client.giteaAPIToken)
res := fasthttp.AcquireResponse()
err := client.fastClient.DoTimeout(req, res, timeout)
return res, err
}