srpmproc/internal/blob/gcs/gcs.go
2021-04-06 21:39:02 +02:00

85 lines
2.2 KiB
Go

// Copyright (c) 2021 The Srpmproc Authors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package gcs
import (
"cloud.google.com/go/storage"
"context"
"io/ioutil"
"log"
)
type GCS struct {
bucket *storage.BucketHandle
}
func New(name string) *GCS {
ctx := context.Background()
client, err := storage.NewClient(ctx)
if err != nil {
log.Fatalf("could not create gcloud client: %v", err)
}
return &GCS{
bucket: client.Bucket(name),
}
}
func (g *GCS) Write(path string, content []byte) {
ctx := context.Background()
obj := g.bucket.Object(path)
w := obj.NewWriter(ctx)
_, err := w.Write(content)
if err != nil {
log.Fatalf("could not write file to gcs: %v", err)
}
// Close, just like writing a file.
if err := w.Close(); err != nil {
log.Fatalf("could not close gcs writer to source: %v", err)
}
}
func (g *GCS) Read(path string) []byte {
ctx := context.Background()
obj := g.bucket.Object(path)
r, err := obj.NewReader(ctx)
if err != nil {
return nil
}
body, err := ioutil.ReadAll(r)
if err != nil {
return nil
}
return body
}
func (g *GCS) Exists(path string) bool {
ctx := context.Background()
obj := g.bucket.Object(path)
_, err := obj.NewReader(ctx)
return err == nil
}