84 lines
2.3 KiB
Go
84 lines
2.3 KiB
Go
/*
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Copyright 2018 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package buildcontext
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import (
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"os"
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"strings"
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"github.com/GoogleContainerTools/kaniko/pkg/constants"
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git "gopkg.in/src-d/go-git.v4"
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"gopkg.in/src-d/go-git.v4/plumbing"
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"gopkg.in/src-d/go-git.v4/plumbing/transport"
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"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
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)
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const (
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gitPullMethodEnvKey = "GIT_PULL_METHOD"
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gitPullMethodHTTPS = "https"
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gitPullMethodHTTP = "http"
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gitAuthUsernameEnvKey = "GIT_USERNAME"
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gitAuthPasswordEnvKey = "GIT_PASSWORD"
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)
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var (
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supportedGitPullMethods = map[string]bool{gitPullMethodHTTPS: true, gitPullMethodHTTP: true}
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)
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// Git unifies calls to download and unpack the build context.
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type Git struct {
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context string
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}
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// UnpackTarFromBuildContext will provide the directory where Git Repository is Cloned
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func (g *Git) UnpackTarFromBuildContext() (string, error) {
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directory := constants.BuildContextDir
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parts := strings.Split(g.context, "#")
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options := git.CloneOptions{
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URL: getGitPullMethod() + "://" + parts[0],
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Auth: getGitAuth(),
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Progress: os.Stdout,
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RecurseSubmodules: git.DefaultSubmoduleRecursionDepth,
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}
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if len(parts) > 1 {
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options.ReferenceName = plumbing.ReferenceName(parts[1])
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}
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_, err := git.PlainClone(directory, false, &options)
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return directory, err
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}
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func getGitAuth() transport.AuthMethod {
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username := os.Getenv(gitAuthUsernameEnvKey)
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password := os.Getenv(gitAuthPasswordEnvKey)
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if username != "" || password != "" {
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return &http.BasicAuth{
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Username: username,
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Password: password,
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}
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}
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return nil
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}
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func getGitPullMethod() string {
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gitPullMethod := os.Getenv(gitPullMethodEnvKey)
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if ok := supportedGitPullMethods[gitPullMethod]; !ok {
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gitPullMethod = gitPullMethodHTTPS
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}
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return gitPullMethod
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}
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