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factory.go
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factory.go
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package factory
import (
"context"
"fmt"
"net/http"
"net/url"
"os"
"strings"
"github.com/pkg/errors"
"github.com/jenkins-x/go-scm/scm"
"github.com/jenkins-x/go-scm/scm/driver/bitbucket"
"github.com/jenkins-x/go-scm/scm/driver/fake"
"github.com/jenkins-x/go-scm/scm/driver/gitea"
"github.com/jenkins-x/go-scm/scm/driver/github"
"github.com/jenkins-x/go-scm/scm/driver/gitlab"
"github.com/jenkins-x/go-scm/scm/driver/gogs"
"github.com/jenkins-x/go-scm/scm/driver/stash"
"github.com/jenkins-x/go-scm/scm/transport"
"golang.org/x/oauth2"
)
// ErrMissingGitServerURL the error returned if you use a git driver that needs a git server URL
var ErrMissingGitServerURL = fmt.Errorf("No git serverURL was specified")
// DefaultIdentifier is the default driver identifier used by FromRepoURL.
var DefaultIdentifier = NewDriverIdentifier()
// ClientOptionFunc is a function taking a client as its argument
type ClientOptionFunc func(*scm.Client)
// SetUsername allows the username to be set
func SetUsername(username string) ClientOptionFunc {
return func(client *scm.Client) {
if username != "" {
client.Username = username
}
}
}
// NewClientWithBasicAuth creates a new client for a given driver, serverURL and basic auth
func NewClientWithBasicAuth(driver, serverURL, user, password string, opts ...ClientOptionFunc) (*scm.Client, error) {
if driver == "" {
driver = "github"
}
var client *scm.Client
var err error
switch driver {
case "gitea":
if serverURL == "" {
return nil, ErrMissingGitServerURL
}
client, err = gitea.NewWithBasicAuth(serverURL, user, password)
default:
return nil, fmt.Errorf("Unsupported $GIT_KIND value: %s", driver)
}
if err != nil {
return client, err
}
for _, o := range opts {
o(client)
}
return client, err
}
// NewClient creates a new client for a given driver, serverURL and OAuth token
func NewClient(driver, serverURL, oauthToken string, opts ...ClientOptionFunc) (*scm.Client, error) {
if driver == "" {
driver = "github"
}
var client *scm.Client
var err error
switch driver {
case "bitbucket", "bitbucketcloud":
if serverURL != "" {
client, err = bitbucket.New(ensureBBCEndpoint(serverURL))
} else {
client = bitbucket.NewDefault()
}
case "fake", "fakegit":
client, _ = fake.NewDefault()
case "gitea":
if serverURL == "" {
return nil, ErrMissingGitServerURL
}
client, err = gitea.NewWithToken(serverURL, oauthToken)
case "github":
if serverURL != "" {
client, err = github.New(ensureGHEEndpoint(serverURL))
} else {
client = github.NewDefault()
}
case "gitlab":
if serverURL != "" {
client, err = gitlab.New(serverURL)
} else {
client = gitlab.NewDefault()
}
case "gogs":
if serverURL == "" {
return nil, ErrMissingGitServerURL
}
client, err = gogs.New(serverURL)
case "stash", "bitbucketserver":
if serverURL == "" {
return nil, ErrMissingGitServerURL
}
client, err = stash.New(serverURL)
default:
return nil, fmt.Errorf("Unsupported $GIT_KIND value: %s", driver)
}
if err != nil {
return client, err
}
if oauthToken != "" {
switch driver {
case "gitea":
client.Client = &http.Client{
Transport: &transport.Authorization{
Scheme: "token",
Credentials: oauthToken,
},
}
case "gitlab":
client.Client = &http.Client{
Transport: &transport.PrivateToken{
Token: oauthToken,
},
}
case "bitbucketcloud":
// lets process any options now so that we can populate the username
for _, o := range opts {
o(client)
}
if client.Username == "" {
return nil, errors.Errorf("no username supplied")
}
client.Client = &http.Client{
Transport: &transport.BasicAuth{
Username: client.Username,
Password: oauthToken,
},
}
return client, nil
default:
ts := oauth2.StaticTokenSource(
&oauth2.Token{AccessToken: oauthToken},
)
client.Client = oauth2.NewClient(context.Background(), ts)
}
}
for _, o := range opts {
o(client)
}
return client, err
}
// NewClientFromEnvironment creates a new client using environment variables $GIT_KIND, $GIT_SERVER, $GIT_TOKEN
// defaulting to github if no $GIT_KIND or $GIT_SERVER
func NewClientFromEnvironment() (*scm.Client, error) {
if repoURL := os.Getenv("GIT_REPO_URL"); repoURL != "" {
return FromRepoURL(repoURL)
}
driver := os.Getenv("GIT_KIND")
serverURL := os.Getenv("GIT_SERVER")
oauthToken := os.Getenv("GIT_TOKEN")
username := os.Getenv("GIT_USER")
if username == "" {
username = os.Getenv("GIT_USERNAME")
}
if oauthToken == "" {
return nil, fmt.Errorf("No Git OAuth token specified for $GIT_TOKEN")
}
client, err := NewClient(driver, serverURL, oauthToken, SetUsername(username))
if driver == "" {
driver = client.Driver.String()
}
fmt.Printf("using driver: %s and serverURL: %s\n", driver, serverURL)
return client, err
}
// FromRepoURL parses a URL of the form https://:authtoken@host/ and attempts to
// determine the driver and creates a client to authenticate to the endpoint.
func FromRepoURL(repoURL string) (*scm.Client, error) {
u, err := url.Parse(repoURL)
if err != nil {
return nil, err
}
auth := ""
if password, ok := u.User.Password(); ok {
auth = password
}
driver, err := DefaultIdentifier.Identify(u.Host)
if err != nil {
return nil, err
}
u.Path = "/"
u.User = nil
return NewClient(driver, u.String(), auth)
}
// ensureGHEEndpoint lets ensure we have the /api/v3 suffix on the URL
func ensureGHEEndpoint(u string) string {
if strings.HasPrefix(u, "https://github.com") || strings.HasPrefix(u, "http://github.com") {
return "https://api.github.com"
}
// lets ensure we use the API endpoint to login
if !strings.Contains(u, "/api/") {
u = scm.URLJoin(u, "/api/v3")
}
return u
}
// ensureBBCEndpoint lets ensure we have the /api/v3 suffix on the URL
func ensureBBCEndpoint(u string) string {
if strings.HasPrefix(u, "https://bitbucket.org") || strings.HasPrefix(u, "http://bitbucket.org") {
return "https://api.bitbucket.org"
}
return u
}
// Client creates a new client with the given HTTP client
func Client(httpClient *http.Client) ClientOptionFunc {
return func(c *scm.Client) {
c.Client = httpClient
}
}
// NewWebHookService creates a new instance of the webhook service without the rest of the client
func NewWebHookService(driver string) (scm.WebhookService, error) {
if driver == "" {
driver = "github"
}
var service scm.WebhookService
switch driver {
case "bitbucket", "bitbucketcloud":
service = bitbucket.NewWebHookService()
case "fake", "fakegit":
// TODO: support fake
case "gitea":
service = gitea.NewWebHookService()
case "github":
service = github.NewWebHookService()
case "gitlab":
service = gitlab.NewWebHookService()
case "gogs":
service = gogs.NewWebHookService()
case "stash", "bitbucketserver":
service = stash.NewWebHookService()
default:
return nil, fmt.Errorf("Unsupported GIT_KIND value: %s", driver)
}
return service, nil
}