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package internal
import (
"archive/tar"
"context"
"fmt"
"io"
"net/http"
"os"
"path/filepath"
"github.com/gorilla/mux"
"github.com/rockbears/log"
"github.com/spf13/afero"
"github.com/ovh/cds/engine/worker/pkg/workerruntime"
"github.com/ovh/cds/sdk"
)
func cachePushHandler(ctx context.Context, wk *CurrentWorker) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
ctx := workerruntime.SetJobID(ctx, wk.currentJob.wJob.ID)
ctx = workerruntime.SetStepOrder(ctx, wk.currentJob.currentStepIndex)
ctx = workerruntime.SetStepName(ctx, wk.currentJob.currentStepName)
data, err := io.ReadAll(r.Body)
if err != nil {
err = sdk.Error{
Message: "worker cache push > Cannot read body : " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
var c sdk.Cache
if err := sdk.JSONUnmarshal(data, &c); err != nil {
err = sdk.Error{
Message: "worker cache push > Cannot unmarshall body : " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
tmpDirectory, err := workerruntime.TmpDirectory(wk.currentJob.context)
if err != nil {
err = sdk.Error{
Message: "worker cache push > Cannot get tmp directory : " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
tarF, err := afero.TempFile(wk.BaseDir(), tmpDirectory.Name(), "tar-")
if err != nil {
err = sdk.Error{
Message: "worker cache push > Cannot create tmp tar file : " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
if err := sdk.CreateTarFromPaths(afero.NewOsFs(), c.WorkingDirectory, c.Files, tarF, nil); err != nil {
_ = tarF.Close() // nolint
err = sdk.Error{
Message: fmt.Sprintf("worker cache push > Cannot tar (%+v) : %v", c.Files, err.Error()),
Status: http.StatusBadRequest,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
if _, err = tarF.Stat(); err != nil {
_ = tarF.Close() // nolint
err = sdk.Error{
Message: "worker cache push > Cannot get tmp tar file info : " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
params := wk.currentJob.wJob.Parameters
projectKey := sdk.ParameterValue(params, "cds.project")
if projectKey == "" {
_ = tarF.Close() // nolint
err := sdk.Error{
Message: "worker cache push > Cannot find project",
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
if err := tarF.Close(); err != nil {
err := sdk.Error{
Message: "worker cache push > Cannot close file: " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
sig, err := wk.WorkerCacheSignature(c.Tag)
if err != nil {
err := sdk.Error{
Message: "worker cache push > Cannot create signature",
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
duration, err := wk.client.CDNItemUpload(ctx, wk.cfg.CDNEndpoint, sig, wk.BaseDir(), tarF.Name())
if err != nil {
log.Error(ctx, "%v", err)
writeError(w, r, err)
return
}
wk.SendLog(ctx, workerruntime.LevelInfo, fmt.Sprintf("Cache '%s' uploaded in %.2fs to CDS CDN", c.Tag, duration.Seconds()))
}
}
func cachePullHandler(ctx context.Context, wk *CurrentWorker) http.HandlerFunc {
return func(w http.ResponseWriter, req *http.Request) {
ctx := workerruntime.SetJobID(ctx, wk.currentJob.wJob.ID)
ctx = workerruntime.SetStepOrder(ctx, wk.currentJob.currentStepIndex)
ctx = workerruntime.SetStepName(ctx, wk.currentJob.currentStepName)
vars := mux.Vars(req)
path := req.FormValue("path")
// Get cache link
items, err := wk.client.QueueWorkerCacheLink(ctx, wk.currentJob.wJob.ID, vars["ref"])
if err != nil {
err = sdk.Error{
Message: "worker cache pull > Cannot get cache links: " + err.Error(),
Status: http.StatusNotFound,
}
log.Error(ctx, "%v", err)
writeError(w, req, err)
return
}
if len(items.Items) != 1 {
err := sdk.Error{
Message: "worker cache pull > No unique link found",
Status: http.StatusNotFound,
}
log.Error(ctx, "%v", err)
writeError(w, req, err)
return
}
// Download cache
wkDirFS := afero.NewOsFs()
if err := wkDirFS.MkdirAll(path, os.FileMode(0744)); err != nil {
newError := sdk.NewError(sdk.ErrInvalidData, fmt.Errorf("unable to create destination directory: %v", err))
writeError(w, req, newError)
return
}
dest := filepath.Join(path, "workercache.tar")
f, err := os.OpenFile(dest, os.O_RDWR|os.O_CREATE|os.O_TRUNC, os.FileMode(0755))
if err != nil {
err = sdk.NewError(sdk.ErrUnknownError, fmt.Errorf("cannot create file (OpenFile) %s: %s", dest, err))
log.Error(ctx, "%v", err)
writeError(w, req, err)
return
}
if err := wk.client.CDNItemDownload(ctx, wk.cfg.CDNEndpoint, items.Items[0].APIRefHash, sdk.CDNTypeItemWorkerCache, items.Items[0].MD5, f); err != nil {
_ = f.Close()
err = sdk.Error{
Message: "worker cache pull > Cannot pull cache: " + err.Error(),
Status: http.StatusNotFound,
}
log.Error(ctx, "%v", err)
writeError(w, req, err)
return
}
if err := f.Close(); err != nil {
err = sdk.Error{
Message: fmt.Sprintf("worker cache pull > unable to close file %s: %v", dest, err),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", err)
writeError(w, req, err)
return
}
// Open tar file
log.Info(ctx, "extracting worker cache %s / %s", dest, vars["ref"])
archive, err := wkDirFS.Open(dest)
if err != nil {
e := sdk.Error{
Message: "worker cache pull > unable to open archive: " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", e)
writeError(w, req, e)
return
}
if err := extractArchive(ctx, archive, path); err != nil {
log.Error(ctx, "%v", err)
writeError(w, req, err)
return
}
if err := wkDirFS.Remove(dest); err != nil {
e := sdk.Error{
Message: "unable to remove worker cache archive: " + err.Error(),
Status: http.StatusInternalServerError,
}
log.Error(ctx, "%v", e)
writeError(w, req, e)
return
}
return
}
}
func extractArchive(ctx context.Context, r io.Reader, path string) *sdk.Error {
tr := tar.NewReader(r)
for {
header, err := tr.Next()
if err == io.EOF {
break
}
if err != nil {
return &sdk.Error{
Message: "worker cache pull > Unable to read tar file: " + err.Error(),
Status: http.StatusBadRequest,
}
}
if header == nil {
continue
}
log.Debug(ctx, "cachePullHandler> Tar contains file %s", header.Name)
// the target location where the dir/file should be created
target := filepath.Join(path, header.Name)
// check the file type
switch header.Typeflag {
// if its a dir and it doesn't exist create it
case tar.TypeDir:
if _, err := os.Stat(target); err != nil {
if err := os.MkdirAll(target, 0755); err != nil {
return &sdk.Error{
Message: "worker cache pull > Unable to mkdir all files : " + err.Error(),
Status: http.StatusInternalServerError,
}
}
}
case tar.TypeSymlink:
if err := os.Symlink(header.Linkname, target); err != nil {
return &sdk.Error{
Message: "worker cache pull > Unable to create symlink: " + err.Error(),
Status: http.StatusInternalServerError,
}
}
// if it's a file create it
case tar.TypeReg, tar.TypeLink:
// if directory of file does not exist, create it before
if _, err := os.Stat(filepath.Dir(target)); err != nil {
if err := os.MkdirAll(filepath.Dir(target), 0755); err != nil {
return &sdk.Error{
Message: "worker cache pull > Unable to mkdir all files : " + err.Error(),
Status: http.StatusInternalServerError,
}
}
}
log.Debug(ctx, "cachePullHandler> Create file at %s", target)
f, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY, os.FileMode(header.Mode))
if err != nil {
return &sdk.Error{
Message: "worker cache pull > Unable to open file: " + err.Error(),
Status: http.StatusInternalServerError,
}
}
// copy over contents
if _, err := io.Copy(f, tr); err != nil {
_ = f.Close()
return &sdk.Error{
Message: "worker cache pull > Cannot copy content file: " + err.Error(),
Status: http.StatusInternalServerError,
}
}
_ = f.Close()
}
}
return nil
}