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/
resource.go
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/
resource.go
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package v2action
import (
"archive/zip"
"crypto/sha1"
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"code.cloudfoundry.org/cli/api/cloudcontroller/ccv2"
"code.cloudfoundry.org/ykk"
ignore "github.com/sabhiram/go-gitignore"
log "github.com/sirupsen/logrus"
)
const (
DefaultFolderPermissions = 0755
DefaultArchiveFilePermissions = 0744
MaxResourceMatchChunkSize = 1000
)
var DefaultIgnoreLines = []string{
".cfignore",
".DS_Store",
".git",
".gitignore",
".hg",
".svn",
"_darcs",
"manifest.yaml",
"manifest.yml",
}
type FileChangedError struct {
Filename string
}
func (e FileChangedError) Error() string {
return fmt.Sprint("SHA1 mismatch for:", e.Filename)
}
type EmptyDirectoryError struct {
Path string
}
func (e EmptyDirectoryError) Error() string {
return fmt.Sprint(e.Path, "is empty")
}
type Resource ccv2.Resource
// GatherArchiveResources returns a list of resources for an archive.
func (actor Actor) GatherArchiveResources(archivePath string) ([]Resource, error) {
var resources []Resource
archive, err := os.Open(archivePath)
if err != nil {
return nil, err
}
defer archive.Close()
reader, err := actor.newArchiveReader(archive)
if err != nil {
return nil, err
}
gitIgnore, err := actor.generateArchiveCFIgnoreMatcher(reader.File)
if err != nil {
log.Errorln("reading .cfignore file:", err)
return nil, err
}
for _, archivedFile := range reader.File {
filename := filepath.ToSlash(archivedFile.Name)
if gitIgnore.MatchesPath(filename) {
continue
}
resource := Resource{Filename: filename}
if archivedFile.FileInfo().IsDir() {
resource.Mode = DefaultFolderPermissions
} else {
fileReader, err := archivedFile.Open()
if err != nil {
return nil, err
}
defer fileReader.Close()
hash := sha1.New()
_, err = io.Copy(hash, fileReader)
if err != nil {
return nil, err
}
resource.Mode = DefaultArchiveFilePermissions
resource.SHA1 = fmt.Sprintf("%x", hash.Sum(nil))
resource.Size = archivedFile.FileInfo().Size()
}
resources = append(resources, resource)
}
return resources, nil
}
// GatherDirectoryResources returns a list of resources for a directory.
func (actor Actor) GatherDirectoryResources(sourceDir string) ([]Resource, error) {
var (
resources []Resource
gitIgnore *ignore.GitIgnore
)
gitIgnore, err := actor.generateDirectoryCFIgnoreMatcher(sourceDir)
if err != nil {
log.Errorln("reading .cfignore file:", err)
return nil, err
}
walkErr := filepath.Walk(sourceDir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
// if file ignored contine to the next file
if gitIgnore.MatchesPath(path) {
return nil
}
relPath, err := filepath.Rel(sourceDir, path)
if err != nil {
return err
}
if relPath == "." {
return nil
}
resource := Resource{
Filename: filepath.ToSlash(relPath),
}
if info.IsDir() {
resource.Mode = DefaultFolderPermissions
} else {
file, err := os.Open(path)
if err != nil {
return err
}
defer file.Close()
sum := sha1.New()
_, err = io.Copy(sum, file)
if err != nil {
return err
}
resource.Mode = fixMode(info.Mode())
resource.SHA1 = fmt.Sprintf("%x", sum.Sum(nil))
resource.Size = info.Size()
}
resources = append(resources, resource)
return nil
})
if len(resources) == 0 {
return nil, EmptyDirectoryError{Path: sourceDir}
}
return resources, walkErr
}
// ResourceMatch returns a set of matched resources and unmatched resources in
// the order they were given in allResources.
func (actor Actor) ResourceMatch(allResources []Resource) ([]Resource, []Resource, Warnings, error) {
resourcesToSend := [][]ccv2.Resource{{}}
var currentList, sendCount int
for _, resource := range allResources {
if resource.Size == 0 {
continue
}
resourcesToSend[currentList] = append(
resourcesToSend[currentList],
ccv2.Resource(resource),
)
sendCount += 1
if len(resourcesToSend[currentList]) == MaxResourceMatchChunkSize {
currentList += 1
resourcesToSend = append(resourcesToSend, []ccv2.Resource{})
}
}
log.WithFields(log.Fields{
"total_resources": len(allResources),
"resources_to_match": sendCount,
"chunks": len(resourcesToSend),
}).Debug("sending resource match stats")
matchedCCResources := map[string]ccv2.Resource{}
var allWarnings Warnings
for _, chunk := range resourcesToSend {
if len(chunk) == 0 {
log.Debug("chunk size 0, stopping resource match requests")
break
}
returnedResources, warnings, err := actor.CloudControllerClient.ResourceMatch(chunk)
allWarnings = append(allWarnings, warnings...)
if err != nil {
log.Errorln("during resource matching", err)
return nil, nil, allWarnings, err
}
for _, resource := range returnedResources {
matchedCCResources[resource.SHA1] = resource
}
}
log.WithField("matched_resource_count", len(matchedCCResources)).Debug("total number of matched resources")
var matchedResources, unmatchedResources []Resource
for _, resource := range allResources {
if _, ok := matchedCCResources[resource.SHA1]; ok {
matchedResources = append(matchedResources, resource)
} else {
unmatchedResources = append(unmatchedResources, resource)
}
}
return matchedResources, unmatchedResources, allWarnings, nil
}
// ZipArchiveResources zips an archive and a sorted (based on full
// path/filename) list of resources and returns the location. On Windows, the
// filemode for user is forced to be readable and executable.
func (actor Actor) ZipArchiveResources(sourceArchivePath string, filesToInclude []Resource) (string, error) {
log.WithField("sourceArchive", sourceArchivePath).Info("zipping source files from archive")
zipFile, err := ioutil.TempFile("", "cf-cli-")
if err != nil {
return "", err
}
defer zipFile.Close()
writer := zip.NewWriter(zipFile)
defer writer.Close()
source, err := os.Open(sourceArchivePath)
if err != nil {
return "", err
}
defer source.Close()
reader, err := actor.newArchiveReader(source)
if err != nil {
return "", err
}
for _, archiveFile := range reader.File {
resource, ok := actor.findInResources(archiveFile.Name, filesToInclude)
if !ok {
log.WithField("archiveFileName", archiveFile.Name).Debug("skipping file")
continue
}
log.WithField("archiveFileName", archiveFile.Name).Debug("zipping file")
reader, openErr := archiveFile.Open()
if openErr != nil {
log.WithField("archiveFile", archiveFile.Name).Errorln("opening path in dir:", openErr)
return "", openErr
}
err = actor.addFileToZipFromFileSystem(
resource.Filename, reader, archiveFile.FileInfo(),
resource.Filename, resource.SHA1, resource.Mode, writer,
)
if err != nil {
log.WithField("archiveFileName", archiveFile.Name).Errorln("zipping file:", err)
return "", err
}
}
log.WithFields(log.Fields{
"zip_file_location": zipFile.Name(),
"zipped_file_count": len(filesToInclude),
}).Info("zip file created")
return zipFile.Name(), nil
}
// ZipDirectoryResources zips a directory and a sorted (based on full
// path/filename) list of resources and returns the location. On Windows, the
// filemode for user is forced to be readable and executable.
func (actor Actor) ZipDirectoryResources(sourceDir string, filesToInclude []Resource) (string, error) {
log.WithField("sourceDir", sourceDir).Info("zipping source files from directory")
zipFile, err := ioutil.TempFile("", "cf-cli-")
if err != nil {
return "", err
}
defer zipFile.Close()
writer := zip.NewWriter(zipFile)
defer writer.Close()
for _, resource := range filesToInclude {
fullPath := filepath.Join(sourceDir, resource.Filename)
log.WithField("fullPath", fullPath).Debug("zipping file")
srcFile, err := os.Open(fullPath)
if err != nil {
log.WithField("fullPath", fullPath).Errorln("opening path in dir:", err)
return "", err
}
fileInfo, err := srcFile.Stat()
if err != nil {
log.WithField("fullPath", fullPath).Errorln("stat error in dir:", err)
return "", err
}
err = actor.addFileToZipFromFileSystem(
fullPath, srcFile, fileInfo,
resource.Filename, resource.SHA1, resource.Mode, writer,
)
if err != nil {
log.WithField("fullPath", fullPath).Errorln("zipping file:", err)
return "", err
}
}
log.WithFields(log.Fields{
"zip_file_location": zipFile.Name(),
"zipped_file_count": len(filesToInclude),
}).Info("zip file created")
return zipFile.Name(), nil
}
func (Actor) actorToCCResources(resources []Resource) []ccv2.Resource {
apiResources := make([]ccv2.Resource, 0, len(resources)) // Explicitly done to prevent nils
for _, resource := range resources {
apiResources = append(apiResources, ccv2.Resource(resource))
}
return apiResources
}
func (Actor) addFileToZipFromFileSystem(
srcPath string, srcFile io.ReadCloser, fileInfo os.FileInfo,
destPath string, sha1Sum string, mode os.FileMode, zipFile *zip.Writer,
) error {
defer srcFile.Close()
header, err := zip.FileInfoHeader(fileInfo)
if err != nil {
log.WithField("srcPath", srcPath).Errorln("getting file info in dir:", err)
return err
}
// An extra '/' indicates that this file is a directory
if fileInfo.IsDir() && !strings.HasSuffix(destPath, "/") {
destPath += "/"
}
header.Name = destPath
header.Method = zip.Deflate
header.SetMode(mode)
log.WithFields(log.Fields{
"srcPath": srcPath,
"destPath": destPath,
"mode": mode,
}).Debug("setting mode for file")
destFileWriter, err := zipFile.CreateHeader(header)
if err != nil {
log.Errorln("creating header:", err)
return err
}
if !fileInfo.IsDir() {
sum := sha1.New()
multi := io.MultiWriter(sum, destFileWriter)
if _, err := io.Copy(multi, srcFile); err != nil {
log.WithField("srcPath", srcPath).Errorln("copying data in dir:", err)
return err
}
if currentSum := fmt.Sprintf("%x", sum.Sum(nil)); sha1Sum != currentSum {
log.WithFields(log.Fields{
"expected": sha1Sum,
"currentSum": currentSum,
}).Error("setting mode for file")
return FileChangedError{Filename: srcPath}
}
}
return nil
}
func (Actor) generateArchiveCFIgnoreMatcher(files []*zip.File) (*ignore.GitIgnore, error) {
for _, item := range files {
if strings.HasSuffix(item.Name, ".cfignore") {
fileReader, err := item.Open()
if err != nil {
return nil, err
}
defer fileReader.Close()
raw, err := ioutil.ReadAll(fileReader)
if err != nil {
return nil, err
}
s := append(DefaultIgnoreLines, strings.Split(string(raw), "\n")...)
return ignore.CompileIgnoreLines(s...)
}
}
return ignore.CompileIgnoreLines(DefaultIgnoreLines...)
}
func (actor Actor) generateDirectoryCFIgnoreMatcher(sourceDir string) (*ignore.GitIgnore, error) {
pathToCFIgnore := filepath.Join(sourceDir, ".cfignore")
additionalIgnoreLines := DefaultIgnoreLines
// If verbose logging has files in the current dir, ignore them
_, traceFiles := actor.Config.Verbose()
for _, traceFilePath := range traceFiles {
if relPath, err := filepath.Rel(sourceDir, traceFilePath); err == nil {
additionalIgnoreLines = append(additionalIgnoreLines, relPath)
}
}
if _, err := os.Stat(pathToCFIgnore); !os.IsNotExist(err) {
return ignore.CompileIgnoreFileAndLines(pathToCFIgnore, additionalIgnoreLines...)
} else {
return ignore.CompileIgnoreLines(additionalIgnoreLines...)
}
}
func (Actor) findInResources(path string, filesToInclude []Resource) (Resource, bool) {
for _, resource := range filesToInclude {
if resource.Filename == filepath.ToSlash(path) {
log.WithField("resource", resource.Filename).Debug("found resource in files to include")
return resource, true
}
}
log.WithField("path", path).Debug("did not find resource in files to include")
return Resource{}, false
}
func (Actor) newArchiveReader(archive *os.File) (*zip.Reader, error) {
info, err := archive.Stat()
if err != nil {
return nil, err
}
return ykk.NewReader(archive, info.Size())
}