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cloud.go
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cloud.go
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package storage
import (
"context"
"time"
"github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc"
"github.com/lileio/cloud_storage_service"
opentracing "github.com/opentracing/opentracing-go"
"github.com/pkg/errors"
"google.golang.org/grpc"
)
type CloudStorage struct {
Storage
addr string
client cloud_storage_service.CloudStorageServiceClient
}
func NewCloudStorage(addr string) *CloudStorage {
return &CloudStorage{addr: addr}
}
func (cs *CloudStorage) connect() error {
if cs.client != nil {
return nil
}
t := opentracing.GlobalTracer()
conn, err := grpc.Dial(
cs.addr,
grpc.WithInsecure(),
grpc.WithTimeout(1*time.Second),
grpc.WithUnaryInterceptor(otgrpc.OpenTracingClientInterceptor(t)),
)
if err != nil {
return err
}
cs.client = cloud_storage_service.NewCloudStorageServiceClient(conn)
return nil
}
func (s *CloudStorage) Store(ctx context.Context, data []byte, filename string) (*StorageObject, error) {
err := s.connect()
if err != nil {
return nil, err
}
obj, err := s.client.Store(ctx, &cloud_storage_service.StoreRequest{
Filename: filename,
Data: data,
})
if err != nil {
return nil, errors.Wrap(err, "cloud storage failed")
}
return &StorageObject{
Filename: filename,
URL: obj.Url,
}, nil
}
func (s *CloudStorage) Delete(ctx context.Context, filename string) error {
err := s.connect()
if err != nil {
return err
}
_, err = s.client.Delete(ctx, &cloud_storage_service.DeleteRequest{
Filename: filename,
})
if err != nil {
return err
}
return nil
}