agola/internal/gitsources/gitlab/gitlab.go

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// Copyright 2019 Sorint.lab
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
// See the License for the specific language governing permissions and
// limitations under the License.
package gitlab
import (
"context"
"crypto/tls"
"encoding/base64"
"fmt"
"net"
"net/http"
"regexp"
"strconv"
"strings"
"time"
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gitsource "agola.io/agola/internal/gitsources"
gitlab "github.com/xanzy/go-gitlab"
"golang.org/x/oauth2"
errors "golang.org/x/xerrors"
)
var (
GitlabOauth2Scopes = []string{"api"}
branchRefPrefix = "refs/heads/"
tagRefPrefix = "refs/tags/"
pullRequestRefRegex = regexp.MustCompile("refs/merge-requests/(.*)/head")
pullRequestRefFmt = "refs/merge-requests/%s/head"
)
type Opts struct {
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APIURL string
Token string
SkipVerify bool
Oauth2ClientID string
Oauth2Secret string
}
type Client struct {
client *gitlab.Client
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APIURL string
oauth2ClientID string
oauth2Secret string
}
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// fromCommitStatus converts a gitsource commit status to a gitlab commit status
func fromCommitStatus(status gitsource.CommitStatus) gitlab.BuildStateValue {
switch status {
case gitsource.CommitStatusPending:
return gitlab.Pending
case gitsource.CommitStatusSuccess:
return gitlab.Success
case gitsource.CommitStatusError:
return gitlab.Failed
case gitsource.CommitStatusFailed:
return gitlab.Failed
default:
panic(fmt.Errorf("unknown commit status %q", status))
}
}
func New(opts Opts) (*Client, error) {
// copied from net/http until it has a clone function: https://github.com/golang/go/issues/26013
transport := &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: (&net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
DualStack: true,
}).DialContext,
MaxIdleConns: 100,
IdleConnTimeout: 90 * time.Second,
TLSHandshakeTimeout: 10 * time.Second,
ExpectContinueTimeout: 1 * time.Second,
TLSClientConfig: &tls.Config{InsecureSkipVerify: opts.SkipVerify},
}
httpClient := &http.Client{Transport: transport}
client := gitlab.NewOAuthClient(httpClient, opts.Token)
if err := client.SetBaseURL(opts.APIURL); err != nil {
return nil, errors.Errorf("failed to set gitlab client base url: %w", err)
}
return &Client{
client: client,
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APIURL: opts.APIURL,
oauth2ClientID: opts.Oauth2ClientID,
oauth2Secret: opts.Oauth2Secret,
}, nil
}
func (c *Client) oauth2Config(callbackURL string) *oauth2.Config {
return &oauth2.Config{
ClientID: c.oauth2ClientID,
ClientSecret: c.oauth2Secret,
Scopes: GitlabOauth2Scopes,
Endpoint: oauth2.Endpoint{
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AuthURL: fmt.Sprintf("%s/oauth/authorize", c.APIURL),
TokenURL: fmt.Sprintf("%s/oauth/token", c.APIURL),
},
RedirectURL: callbackURL,
}
}
func (c *Client) GetOauth2AuthorizationURL(callbackURL, state string) (string, error) {
var config = c.oauth2Config(callbackURL)
return config.AuthCodeURL(state), nil
}
func (c *Client) RequestOauth2Token(callbackURL, code string) (*oauth2.Token, error) {
var config = c.oauth2Config(callbackURL)
token, err := config.Exchange(context.TODO(), code)
if err != nil {
return nil, errors.Errorf("cannot get oauth2 token: %w", err)
}
return token, nil
}
func (c *Client) RefreshOauth2Token(refreshToken string) (*oauth2.Token, error) {
var config = c.oauth2Config("")
token := &oauth2.Token{RefreshToken: refreshToken}
ts := config.TokenSource(context.TODO(), token)
return ts.Token()
}
func (c *Client) GetRepoInfo(repopath string) (*gitsource.RepoInfo, error) {
rr, _, err := c.client.Projects.GetProject(repopath, nil)
if err != nil {
return nil, err
}
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return fromGitlabRepo(rr), nil
}
func (c *Client) GetUserInfo() (*gitsource.UserInfo, error) {
user, _, err := c.client.Users.CurrentUser()
if err != nil {
return nil, err
}
return &gitsource.UserInfo{
ID: strconv.Itoa(user.ID),
LoginName: user.Username,
Email: user.Email,
}, nil
}
func (c *Client) GetFile(repopath, commit, file string) ([]byte, error) {
f, _, err := c.client.RepositoryFiles.GetFile(repopath, file, &gitlab.GetFileOptions{Ref: gitlab.String(commit)})
if err != nil {
return nil, err
}
data, err := base64.StdEncoding.DecodeString(f.Content)
if err != nil {
return nil, err
}
return data, err
}
func (c *Client) CreateDeployKey(repopath, title, pubKey string, readonly bool) error {
if _, _, err := c.client.DeployKeys.AddDeployKey(repopath, &gitlab.AddDeployKeyOptions{
Title: gitlab.String(title),
Key: gitlab.String(pubKey),
}); err != nil {
return errors.Errorf("error creating deploy key: %w", err)
}
return nil
}
func (c *Client) UpdateDeployKey(repopath, title, pubKey string, readonly bool) error {
keys, _, err := c.client.DeployKeys.ListProjectDeployKeys(repopath, nil)
if err != nil {
return errors.Errorf("error retrieving existing deploy keys: %w", err)
}
for _, key := range keys {
if key.Title == title {
if key.Key == pubKey {
return nil
}
if _, err := c.client.DeployKeys.DeleteDeployKey(repopath, key.ID); err != nil {
return errors.Errorf("error removing existing deploy key: %w", err)
}
}
}
if _, _, err := c.client.DeployKeys.AddDeployKey(repopath, &gitlab.AddDeployKeyOptions{
Title: &title,
Key: &pubKey,
}); err != nil {
return errors.Errorf("error creating deploy key: %w", err)
}
return nil
}
func (c *Client) DeleteDeployKey(repopath, title string) error {
keys, _, err := c.client.DeployKeys.ListProjectDeployKeys(repopath, nil)
if err != nil {
return errors.Errorf("error retrieving existing deploy keys: %w", err)
}
for _, key := range keys {
if key.Title == title {
if _, err := c.client.DeployKeys.DeleteDeployKey(repopath, key.ID); err != nil {
return errors.Errorf("error removing existing deploy key: %w", err)
}
}
}
return nil
}
func (c *Client) CreateRepoWebhook(repopath, url, secret string) error {
opts := &gitlab.AddProjectHookOptions{
URL: gitlab.String(url),
PushEvents: gitlab.Bool(true),
TagPushEvents: gitlab.Bool(true),
MergeRequestsEvents: gitlab.Bool(true),
Token: gitlab.String(secret),
}
if _, _, err := c.client.Projects.AddProjectHook(repopath, opts); err != nil {
return errors.Errorf("error creating repository webhook: %w", err)
}
return nil
}
func (c *Client) DeleteRepoWebhook(repopath, u string) error {
hooks, _, err := c.client.Projects.ListProjectHooks(repopath, nil)
if err != nil {
return errors.Errorf("error retrieving repository webhooks: %w", err)
}
// match the full url so we can have multiple webhooks for different agola
// projects
for _, hook := range hooks {
if hook.URL == u {
if _, err := c.client.Projects.DeleteProjectHook(repopath, hook.ID); err != nil {
return errors.Errorf("error deleting existing repository webhook: %w", err)
}
}
}
return nil
}
func (c *Client) CreateCommitStatus(repopath, commitSHA string, status gitsource.CommitStatus, targetURL, description, context string) error {
_, _, err := c.client.Commits.SetCommitStatus(repopath, commitSHA, &gitlab.SetCommitStatusOptions{
State: fromCommitStatus(status),
TargetURL: gitlab.String(targetURL),
Description: gitlab.String(description),
Context: gitlab.String(context),
})
return err
}
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func (c *Client) ListUserRepos() ([]*gitsource.RepoInfo, error) {
// get only repos with permission greater or equal to maintainer
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opts := &gitlab.ListProjectsOptions{MinAccessLevel: gitlab.AccessLevel(gitlab.MaintainerPermissions)}
remoteRepos, _, err := c.client.Projects.ListProjects(opts)
if err != nil {
return nil, err
}
repos := []*gitsource.RepoInfo{}
for _, rr := range remoteRepos {
repos = append(repos, fromGitlabRepo(rr))
}
return repos, nil
}
func fromGitlabRepo(rr *gitlab.Project) *gitsource.RepoInfo {
return &gitsource.RepoInfo{
ID: strconv.Itoa(rr.ID),
Path: rr.PathWithNamespace,
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HTMLURL: rr.WebURL,
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SSHCloneURL: rr.SSHURLToRepo,
HTTPCloneURL: rr.HTTPURLToRepo,
}
}
// NOTE(sgotti) gitlab doesn't provide a get ref api
func (c *Client) GetRef(repopath, ref string) (*gitsource.Ref, error) {
switch {
case strings.HasPrefix(ref, "refs/heads/"):
branch := strings.TrimPrefix(ref, "refs/heads/")
remoteBranch, _, err := c.client.Branches.GetBranch(repopath, branch)
if err != nil {
return nil, err
}
return &gitsource.Ref{
Ref: ref,
CommitSHA: remoteBranch.Commit.ID,
}, nil
case strings.HasPrefix(ref, "refs/tags/"):
tag := strings.TrimPrefix(ref, "refs/heads/")
remoteTag, _, err := c.client.Tags.GetTag(repopath, tag)
if err != nil {
return nil, err
}
return &gitsource.Ref{
Ref: ref,
CommitSHA: remoteTag.Commit.ID,
}, nil
default:
return nil, fmt.Errorf("unsupported ref: %s", ref)
}
}
func (c *Client) RefType(ref string) (gitsource.RefType, string, error) {
switch {
case strings.HasPrefix(ref, branchRefPrefix):
return gitsource.RefTypeBranch, strings.TrimPrefix(ref, branchRefPrefix), nil
case strings.HasPrefix(ref, tagRefPrefix):
return gitsource.RefTypeTag, strings.TrimPrefix(ref, tagRefPrefix), nil
case pullRequestRefRegex.MatchString(ref):
m := pullRequestRefRegex.FindStringSubmatch(ref)
return gitsource.RefTypePullRequest, m[1], nil
default:
return -1, "", fmt.Errorf("unsupported ref: %s", ref)
}
}
func (c *Client) GetCommit(repopath, commitSHA string) (*gitsource.Commit, error) {
commit, _, err := c.client.Commits.GetCommit(repopath, commitSHA, nil)
if err != nil {
return nil, err
}
return &gitsource.Commit{
SHA: commit.ID,
Message: commit.Message,
}, nil
}
func (c *Client) BranchRef(branch string) string {
return branchRefPrefix + branch
}
func (c *Client) TagRef(tag string) string {
return tagRefPrefix + tag
}
func (c *Client) PullRequestRef(prID string) string {
return fmt.Sprintf(pullRequestRefFmt, prID)
}
func (c *Client) CommitLink(repoInfo *gitsource.RepoInfo, commitSHA string) string {
return fmt.Sprintf("%s/commit/%s", repoInfo.HTMLURL, commitSHA)
}
func (c *Client) BranchLink(repoInfo *gitsource.RepoInfo, branch string) string {
return fmt.Sprintf("%s/tree/%s", repoInfo.HTMLURL, branch)
}
func (c *Client) TagLink(repoInfo *gitsource.RepoInfo, tag string) string {
return fmt.Sprintf("%s/tree/%s", repoInfo.HTMLURL, tag)
}
func (c *Client) PullRequestLink(repoInfo *gitsource.RepoInfo, prID string) string {
return fmt.Sprintf("%s/merge_requests/%s", repoInfo.HTMLURL, prID)
}