Files
kaniko/pkg/buildcontext/git.go
T
Yoriyasu Yano 6e615a8ff9 Add ability to set git auth token using environment variables
Currently the only way to set the git auth is by including it in the context
git URL. This can be problematic for certain environments such as ECS where the
command args for are stored in logs. Introduces updates to allow setting the
authentication info using the environment variables `GIT_USERNAME` and
`GIT_PASSWORD`.
2020-05-11 10:59:48 -05:00

83 lines
2.2 KiB
Go

/*
Copyright 2018 Google LLC
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 buildcontext
import (
"os"
"strings"
"github.com/GoogleContainerTools/kaniko/pkg/constants"
git "gopkg.in/src-d/go-git.v4"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/transport"
"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
)
const (
gitPullMethodEnvKey = "GIT_PULL_METHOD"
gitPullMethodHTTPS = "https"
gitPullMethodHTTP = "http"
gitAuthUsernameEnvKey = "GIT_USERNAME"
gitAuthPasswordEnvKey = "GIT_PASSWORD"
)
var (
supportedGitPullMethods = map[string]bool{gitPullMethodHTTPS: true, gitPullMethodHTTP: true}
)
// Git unifies calls to download and unpack the build context.
type Git struct {
context string
}
// UnpackTarFromBuildContext will provide the directory where Git Repository is Cloned
func (g *Git) UnpackTarFromBuildContext() (string, error) {
directory := constants.BuildContextDir
parts := strings.Split(g.context, "#")
options := git.CloneOptions{
URL: getGitPullMethod() + "://" + parts[0],
Auth: getGitAuth(),
Progress: os.Stdout,
}
if len(parts) > 1 {
options.ReferenceName = plumbing.ReferenceName(parts[1])
}
_, err := git.PlainClone(directory, false, &options)
return directory, err
}
func getGitAuth() transport.AuthMethod {
username := os.Getenv(gitAuthUsernameEnvKey)
password := os.Getenv(gitAuthPasswordEnvKey)
if username != "" || password != "" {
return &http.BasicAuth{
Username: username,
Password: password,
}
}
return nil
}
func getGitPullMethod() string {
gitPullMethod := os.Getenv(gitPullMethodEnvKey)
if ok := supportedGitPullMethods[gitPullMethod]; !ok {
gitPullMethod = gitPullMethodHTTPS
}
return gitPullMethod
}