109 lines
3.3 KiB
Go
109 lines
3.3 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 commands
|
|
|
|
import (
|
|
"github.com/GoogleCloudPlatform/kaniko/pkg/util"
|
|
"github.com/containers/image/manifest"
|
|
"github.com/docker/docker/builder/dockerfile/instructions"
|
|
"github.com/sirupsen/logrus"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
)
|
|
|
|
type CopyCommand struct {
|
|
cmd *instructions.CopyCommand
|
|
buildcontext string
|
|
snapshotFiles []string
|
|
}
|
|
|
|
func (c *CopyCommand) ExecuteCommand(config *manifest.Schema2Config) error {
|
|
srcs := c.cmd.SourcesAndDest[:len(c.cmd.SourcesAndDest)-1]
|
|
dest := c.cmd.SourcesAndDest[len(c.cmd.SourcesAndDest)-1]
|
|
|
|
logrus.Infof("cmd: copy %s", srcs)
|
|
logrus.Infof("dest: %s", dest)
|
|
|
|
// First, resolve any environment replacement
|
|
resolvedEnvs, err := util.ResolveEnvironmentReplacementList(c.cmd.SourcesAndDest, config.Env, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dest = resolvedEnvs[len(resolvedEnvs)-1]
|
|
// Get a map of [src]:[files rooted at src]
|
|
srcMap, err := util.ResolveSources(resolvedEnvs, c.buildcontext)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// For each source, iterate through each file within and copy it over
|
|
for src, files := range srcMap {
|
|
for _, file := range files {
|
|
fi, err := os.Lstat(filepath.Join(c.buildcontext, file))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
destPath, err := util.DestinationFilepath(file, src, dest, config.WorkingDir, c.buildcontext)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// If source file is a directory, we want to create a directory ...
|
|
if fi.IsDir() {
|
|
logrus.Infof("Creating directory %s", destPath)
|
|
if err := os.MkdirAll(destPath, fi.Mode()); err != nil {
|
|
return err
|
|
}
|
|
} else if fi.Mode()&os.ModeSymlink != 0 {
|
|
// If file is a symlink, we want to create the same relative symlink
|
|
link, err := os.Readlink(filepath.Join(c.buildcontext, file))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
linkDst := filepath.Join(destPath, link)
|
|
if err := os.Symlink(linkDst, destPath); err != nil {
|
|
logrus.Errorf("unable to symlink %s to %s", linkDst, destPath)
|
|
return err
|
|
}
|
|
} else {
|
|
// ... Else, we want to copy over a file
|
|
logrus.Infof("Copying file %s to %s", file, destPath)
|
|
srcFile, err := os.Open(filepath.Join(c.buildcontext, file))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer srcFile.Close()
|
|
if err := util.CreateFile(destPath, srcFile, fi.Mode()); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
// Append the destination file to the list of files that should be snapshotted later
|
|
c.snapshotFiles = append(c.snapshotFiles, destPath)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// FilesToSnapshot should return an empty array if still nil; no files were changed
|
|
func (c *CopyCommand) FilesToSnapshot() []string {
|
|
return c.snapshotFiles
|
|
}
|
|
|
|
// CreatedBy returns some information about the command for the image config
|
|
func (c *CopyCommand) CreatedBy() string {
|
|
return strings.Join(c.cmd.SourcesAndDest, " ")
|
|
}
|