forked from GoesToEleven/GolangTraining
/
storage.go
executable file
·94 lines (79 loc) · 1.93 KB
/
storage.go
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package storage
import (
"fmt"
"io"
"net/http"
"golang.org/x/net/context"
"golang.org/x/oauth2/google"
"google.golang.org/appengine"
"google.golang.org/cloud"
"google.golang.org/cloud/storage"
"io/ioutil"
)
const gcsBucket = "learning-1130-bucket-01"
const aeId = "learning-1130"
func init() {
http.HandleFunc("/put", handlePut)
http.HandleFunc("/get", handleGet)
http.HandleFunc("/list", handleList)
}
func getCloudContext(req *http.Request) (context.Context, error) {
jsonKey, err := ioutil.ReadFile("gcs.xxjson")
if err != nil {
return nil, err
}
conf, err := google.JWTConfigFromJSON(
jsonKey,
storage.ScopeFullControl,
)
if err != nil {
return nil, err
}
ctx := appengine.NewContext(req)
hc := conf.Client(ctx)
return cloud.NewContext(aeId, hc), nil
}
func handlePut(res http.ResponseWriter, req *http.Request) {
cctx, err := getCloudContext(req)
if err != nil {
http.Error(res, "ERROR GETTING CCTX: "+err.Error(), 500)
return
}
writer := storage.NewWriter(cctx, gcsBucket, "example999.txt")
io.WriteString(writer, "showing the put get list")
err = writer.Close()
if err != nil {
http.Error(res, "ERROR WRITING TO BUCKET: "+err.Error(), 500)
return
}
}
func handleGet(res http.ResponseWriter, req *http.Request) {
cctx, err := getCloudContext(req)
if err != nil {
http.Error(res, "ERROR GETTING CCTX: "+err.Error(), 500)
return
}
rdr, err := storage.NewReader(cctx, gcsBucket, "example999.txt")
if err != nil {
http.Error(res, err.Error(), 500)
return
}
defer rdr.Close()
io.Copy(res, rdr)
}
func handleList(res http.ResponseWriter, req *http.Request) {
cctx, err := getCloudContext(req)
if err != nil {
http.Error(res, "ERROR GETTING CCTX: "+err.Error(), 500)
return
}
var query *storage.Query
objs, err := storage.ListObjects(cctx, gcsBucket, query)
if err != nil {
http.Error(res, err.Error(), 500)
return
}
for _, obj := range objs.Results {
fmt.Fprintln(res, obj.Name)
}
}