419 lines
11 KiB
Go
419 lines
11 KiB
Go
package github
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"strconv"
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"strings"
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"time"
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"github.com/drone/drone/pkg/settings"
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common "github.com/drone/drone/pkg/types"
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"github.com/hashicorp/golang-lru"
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"github.com/google/go-github/github"
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)
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const (
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DefaultAPI = "https://api.github.com/"
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DefaultURL = "https://github.com"
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DefaultScope = "repo,repo:status,user:email"
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)
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type GitHub struct {
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URL string
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API string
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Client string
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Secret string
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PrivateMode bool
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SkipVerify bool
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cache *lru.Cache
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}
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func New(service *settings.Service) *GitHub {
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var github = GitHub{
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API: DefaultAPI,
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URL: DefaultURL,
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Client: service.OAuth.Client,
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Secret: service.OAuth.Secret,
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PrivateMode: service.PrivateMode,
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SkipVerify: service.SkipVerify,
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}
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var err error
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github.cache, err = lru.New(1028)
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if err != nil {
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panic(err)
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}
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// if GitHub enterprise then ensure we're using the
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// appropriate URLs
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if !strings.HasPrefix(service.Base, DefaultURL) && len(service.Base) != 0 {
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github.URL = service.Base
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github.API = service.Base + "/api/v3/"
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}
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// the API must have a trailing slash
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if !strings.HasSuffix(github.API, "/") {
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github.API += "/"
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}
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// the URL must NOT have a trailing slash
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if strings.HasSuffix(github.URL, "/") {
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github.URL = github.URL[:len(github.URL)-1]
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}
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return &github
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}
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func (g *GitHub) Login(token, secret string) (*common.User, error) {
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client := NewClient(g.API, token, g.SkipVerify)
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login, err := GetUserEmail(client)
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if err != nil {
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return nil, err
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}
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user := common.User{}
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user.Login = *login.Login
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user.Email = *login.Email
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user.Name = *login.Name
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user.Token = token
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user.Secret = secret
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return &user, nil
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}
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// Orgs fetches the organizations for the given user.
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func (g *GitHub) Orgs(u *common.User) ([]string, error) {
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client := NewClient(g.API, u.Token, g.SkipVerify)
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orgs_ := []string{}
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orgs, err := GetOrgs(client)
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if err != nil {
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return orgs_, err
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}
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for _, org := range orgs {
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orgs_ = append(orgs_, *org.Login)
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}
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return orgs_, nil
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}
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// Repo fetches the named repository from the remote system.
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func (g *GitHub) Repo(u *common.User, owner, name string) (*common.Repo, error) {
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client := NewClient(g.API, u.Token, g.SkipVerify)
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repo_, err := GetRepo(client, owner, name)
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if err != nil {
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return nil, err
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}
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repo := &common.Repo{}
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repo.Owner = owner
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repo.Name = name
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repo.FullName = *repo_.FullName
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repo.Link = *repo_.HTMLURL
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repo.Private = *repo_.Private
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repo.Clone = *repo_.CloneURL
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if repo_.Language != nil {
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repo.Language = *repo_.Language
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}
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if repo_.DefaultBranch != nil {
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repo.Branch = *repo_.DefaultBranch
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}
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if g.PrivateMode {
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repo.Private = true
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}
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return repo, err
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}
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// Perm fetches the named repository from the remote system.
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func (g *GitHub) Perm(u *common.User, owner, name string) (*common.Perm, error) {
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key := fmt.Sprintf("%s/%s/%s", u.Login, owner, name)
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val, ok := g.cache.Get(key)
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if ok {
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return val.(*common.Perm), nil
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}
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client := NewClient(g.API, u.Token, g.SkipVerify)
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repo, err := GetRepo(client, owner, name)
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if err != nil {
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return nil, err
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}
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m := &common.Perm{}
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m.Admin = (*repo.Permissions)["admin"]
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m.Push = (*repo.Permissions)["push"]
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m.Pull = (*repo.Permissions)["pull"]
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g.cache.Add(key, m)
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return m, nil
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}
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// Script fetches the build script (.drone.yml) from the remote
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// repository and returns in string format.
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func (g *GitHub) Script(u *common.User, r *common.Repo, c *common.Commit) ([]byte, error) {
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client := NewClient(g.API, u.Token, g.SkipVerify)
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var sha string
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if len(c.SourceSha) == 0 {
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sha = c.Sha
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} else {
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sha = c.SourceSha
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}
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return GetFile(client, r.Owner, r.Name, ".drone.yml", sha)
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}
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// Netrc returns a .netrc file that can be used to clone
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// private repositories from a remote system.
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func (g *GitHub) Netrc(u *common.User) (*common.Netrc, error) {
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url_, err := url.Parse(g.URL)
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if err != nil {
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return nil, err
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}
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netrc := &common.Netrc{}
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netrc.Login = u.Token
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netrc.Password = "x-oauth-basic"
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netrc.Machine = url_.Host
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return netrc, nil
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}
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// Activate activates a repository by creating the post-commit hook and
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// adding the SSH deploy key, if applicable.
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func (g *GitHub) Activate(u *common.User, r *common.Repo, k *common.Keypair, link string) error {
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client := NewClient(g.API, u.Token, g.SkipVerify)
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title, err := GetKeyTitle(link)
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if err != nil {
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return err
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}
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// if the CloneURL is using the SSHURL then we know that
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// we need to add an SSH key to GitHub.
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if r.Private || g.PrivateMode {
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_, err = CreateUpdateKey(client, r.Owner, r.Name, title, k.Public)
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if err != nil {
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return err
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}
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}
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_, err = CreateUpdateHook(client, r.Owner, r.Name, link)
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return err
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}
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// Deactivate removes a repository by removing all the post-commit hooks
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// which are equal to link and removing the SSH deploy key.
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func (g *GitHub) Deactivate(u *common.User, r *common.Repo, link string) error {
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client := NewClient(g.API, u.Token, g.SkipVerify)
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title, err := GetKeyTitle(link)
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if err != nil {
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return err
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}
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// remove the deploy-key if it is installed remote.
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if r.Private || g.PrivateMode {
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if err := DeleteKey(client, r.Owner, r.Name, title); err != nil {
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return err
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}
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}
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return DeleteHook(client, r.Owner, r.Name, link)
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}
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func (g *GitHub) Status(u *common.User, r *common.Repo, c *common.Commit) error {
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client := NewClient(g.API, u.Token, g.SkipVerify)
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if len(c.PullRequest) == 0 {
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return nil
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}
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link := fmt.Sprintf("%s/%v", r.Self, c.Sequence)
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status := getStatus(c.State)
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desc := getDesc(c.State)
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data := github.RepoStatus{
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Context: github.String("Drone"),
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State: github.String(status),
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Description: github.String(desc),
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TargetURL: github.String(link),
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}
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_, _, err := client.Repositories.CreateStatus(r.Owner, r.Name, c.SourceSha, &data)
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return err
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}
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// Hook parses the post-commit hook from the Request body
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// and returns the required data in a standard format.
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func (g *GitHub) Hook(r *http.Request) (*common.Hook, error) {
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switch r.Header.Get("X-Github-Event") {
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case "pull_request":
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return g.pullRequest(r)
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case "push":
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return g.push(r)
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default:
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return nil, nil
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}
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}
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// push parses a hook with event type `push` and returns
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// the commit data.
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func (g *GitHub) push(r *http.Request) (*common.Hook, error) {
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payload := GetPayload(r)
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hook := &pushHook{}
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err := json.Unmarshal(payload, hook)
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if err != nil {
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return nil, err
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}
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repo := &common.Repo{}
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repo.Owner = hook.Repo.Owner.Login
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if len(repo.Owner) == 0 {
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repo.Owner = hook.Repo.Owner.Name
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}
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repo.Name = hook.Repo.Name
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repo.FullName = hook.Repo.FullName
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repo.Link = hook.Repo.HTMLURL
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repo.Private = hook.Repo.Private
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repo.Clone = hook.Repo.CloneURL
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repo.Language = hook.Repo.Language
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repo.Branch = hook.Repo.DefaultBranch
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commit := &common.Commit{}
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commit.Sha = hook.Head.ID
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commit.Ref = hook.Ref
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commit.Branch = strings.Replace(commit.Ref, "refs/heads/", "", -1)
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commit.Message = hook.Head.Message
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commit.Timestamp = hook.Head.Timestamp
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commit.Author = hook.Head.Author.Username
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// commit.Author.Name = hook.Head.Author.Name
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// commit.Author.Email = hook.Head.Author.Email
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// commit.Author.Login = hook.Head.Author.Username
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// we should ignore github pages
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if commit.Ref == "refs/heads/gh-pages" {
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return nil, nil
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}
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return &common.Hook{Repo: repo, Commit: commit}, nil
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}
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// pullRequest parses a hook with event type `pullRequest`
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// and returns the commit data.
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func (g *GitHub) pullRequest(r *http.Request) (*common.Hook, error) {
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payload := GetPayload(r)
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hook := &struct {
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Action string `json:"action"`
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PullRequest *github.PullRequest `json:"pull_request"`
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Repo *github.Repository `json:"repository"`
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}{}
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err := json.Unmarshal(payload, hook)
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if err != nil {
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return nil, err
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}
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// ignore these
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if hook.Action != "opened" && hook.Action != "synchronize" {
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return nil, nil
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}
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repo := &common.Repo{}
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repo.Owner = *hook.Repo.Owner.Login
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repo.Name = *hook.Repo.Name
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repo.FullName = *hook.Repo.FullName
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repo.Link = *hook.Repo.HTMLURL
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repo.Private = *hook.Repo.Private
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repo.Clone = *hook.Repo.CloneURL
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if hook.Repo.Language != nil {
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repo.Language = *hook.Repo.Language
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}
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if hook.Repo.DefaultBranch != nil {
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repo.Branch = *hook.Repo.DefaultBranch
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}
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c := &common.Commit{}
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c.PullRequest = strconv.Itoa(*hook.PullRequest.Number)
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c.Message = *hook.PullRequest.Title
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c.Sha = *hook.PullRequest.Base.SHA
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c.Ref = *hook.PullRequest.Base.Ref
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c.Ref = fmt.Sprintf("refs/pull/%s/merge", c.PullRequest)
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c.Branch = *hook.PullRequest.Base.Ref
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c.Timestamp = time.Now().UTC().Format("2006-01-02 15:04:05.000000000 +0000 MST")
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c.Author = *hook.PullRequest.Base.User.Login
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c.SourceRemote = *hook.PullRequest.Head.Repo.CloneURL
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c.SourceBranch = *hook.PullRequest.Head.Ref
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c.SourceSha = *hook.PullRequest.Head.SHA
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return &common.Hook{Repo: repo, Commit: c}, nil
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}
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type pushHook struct {
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Ref string `json:"ref"`
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Head struct {
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ID string `json:"id"`
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Message string `json:"message"`
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Timestamp string `json:"timestamp"`
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Author struct {
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Name string `json:"name"`
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Email string `json:"name"`
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Username string `json:"username"`
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} `json:"author"`
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Committer struct {
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Name string `json:"name"`
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Email string `json:"name"`
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Username string `json:"username"`
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} `json:"committer"`
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} `json:"head_commit"`
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Repo struct {
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Owner struct {
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Login string `json:"login"`
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Name string `json:"name"`
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} `json:"owner"`
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Name string `json:"name"`
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FullName string `json:"full_name"`
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Language string `json:"language"`
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Private bool `json:"private"`
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HTMLURL string `json:"html_url"`
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CloneURL string `json:"clone_url"`
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DefaultBranch string `json:"default_branch"`
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} `json:"repository"`
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}
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const (
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StatusPending = "pending"
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StatusSuccess = "success"
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StatusFailure = "failure"
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StatusError = "error"
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)
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const (
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DescPending = "this build is pending"
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DescSuccess = "the build was successful"
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DescFailure = "the build failed"
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DescError = "oops, something went wrong"
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)
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// getStatus is a helper functin that converts a Drone
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// status to a GitHub status.
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func getStatus(status string) string {
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switch status {
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case common.StatePending, common.StateRunning:
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return StatusPending
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case common.StateSuccess:
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return StatusSuccess
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case common.StateFailure:
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return StatusFailure
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case common.StateError, common.StateKilled:
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return StatusError
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default:
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return StatusError
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}
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}
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// getDesc is a helper function that generates a description
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// message for the build based on the status.
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func getDesc(status string) string {
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switch status {
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case common.StatePending, common.StateRunning:
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return DescPending
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case common.StateSuccess:
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return DescSuccess
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case common.StateFailure:
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return DescFailure
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case common.StateError, common.StateKilled:
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return DescError
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default:
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return DescError
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}
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}
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