/
sources.go
131 lines (122 loc) · 3.37 KB
/
sources.go
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// Copyright 2017 Google Inc. All Rights Reserved.
//
// 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 workflow
import (
"fmt"
"io"
"os"
"path"
"path/filepath"
"strings"
"cloud.google.com/go/storage"
"google.golang.org/api/iterator"
)
func (w *Workflow) recursiveGCS(bkt, prefix, dst string) error {
it := w.StorageClient.Bucket(bkt).Objects(w.Ctx, &storage.Query{Prefix: prefix})
for objAttr, err := it.Next(); err != iterator.Done; objAttr, err = it.Next() {
if err != nil {
return err
}
if objAttr.Size == 0 {
continue
}
srcPath := w.StorageClient.Bucket(bkt).Object(objAttr.Name)
o := path.Join(w.sourcesPath, dst, strings.TrimPrefix(objAttr.Name, prefix))
dstPath := w.StorageClient.Bucket(w.bucket).Object(o)
if _, err := dstPath.CopierFrom(srcPath).Run(w.Ctx); err != nil {
return err
}
}
return nil
}
func (w *Workflow) sourceExists(s string) bool {
_, ok := w.Sources[s]
return ok
}
func (w *Workflow) uploadFile(src, obj string) error {
obj = filepath.ToSlash(obj)
dstPath := w.StorageClient.Bucket(w.bucket).Object(path.Join(w.sourcesPath, obj))
gcs := dstPath.NewWriter(w.Ctx)
f, err := os.Open(src)
if err != nil {
return err
}
if _, err := io.Copy(gcs, f); err != nil {
return err
}
return gcs.Close()
}
func (w *Workflow) uploadSources() error {
for dst, origPath := range w.Sources {
if origPath == "" {
continue
}
// GCS to GCS.
if bkt, objPath, err := splitGCSPath(origPath); err == nil {
if objPath == "" || strings.HasSuffix(objPath, "/") {
if err := w.recursiveGCS(bkt, objPath, dst); err != nil {
return fmt.Errorf("error copying from bucket %s: %v", origPath, err)
}
continue
}
src := w.StorageClient.Bucket(bkt).Object(objPath)
dstPath := w.StorageClient.Bucket(w.bucket).Object(path.Join(w.sourcesPath, dst))
if _, err := dstPath.CopierFrom(src).Run(w.Ctx); err != nil {
return fmt.Errorf("error copying from file %s: %v", origPath, err)
}
continue
}
// Local to GCS.
if !filepath.IsAbs(origPath) {
origPath = filepath.Join(w.workflowDir, origPath)
}
fi, err := os.Stat(origPath)
if err != nil {
return err
}
if fi.IsDir() {
var files []string
if err := filepath.Walk(origPath, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
if info.IsDir() {
return nil
}
files = append(files, path)
return nil
}); err != nil {
return err
}
for _, file := range files {
obj := path.Join(dst, strings.TrimPrefix(file, filepath.Clean(origPath)))
if err := w.uploadFile(file, obj); err != nil {
return err
}
}
continue
}
if err := w.uploadFile(origPath, dst); err != nil {
return err
}
}
for _, step := range w.Steps {
if step.SubWorkflow != nil {
if err := step.SubWorkflow.w.uploadSources(); err != nil {
return err
}
}
}
return nil
}