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casclient.go
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casclient.go
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//
// Copyright 2023 The Chainloop Authors.
//
// 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 casclient
import (
"context"
"io"
"github.com/rs/zerolog"
"google.golang.org/grpc"
)
type UpDownStatus struct {
Filename, Digest string
ProcessedBytes int64
}
type ResourceInfo struct {
Digest string
Filename string
Size int64
}
type Uploader interface {
UploadFile(ctx context.Context, filepath string) (*UpDownStatus, error)
Upload(ctx context.Context, r io.Reader, digest, fileName string) (*UpDownStatus, error)
// Whether the CAS is ready to accept uploads
IsReady(ctx context.Context) (bool, error)
}
type Downloader interface {
Download(ctx context.Context, w io.Writer, digest string) error
// Whether the CAS is ready to accept downloads
IsReady(ctx context.Context) (bool, error)
}
type DownloaderUploader interface {
Downloader
Uploader
}
type CASBackend struct {
Uploader Uploader
// Max number of bytes this backend can store per artifact
MaxSize int64
// CAS backend name
Name string
}
type ProgressStatusChan chan (*UpDownStatus)
type Client struct {
conn *grpc.ClientConn
logger zerolog.Logger
// channel to send progress status to the go-routine that's rendering the progress bar
ProgressStatus ProgressStatusChan
}
func New(conn *grpc.ClientConn, opts ...ClientOpts) *Client {
client := &Client{
conn: conn,
ProgressStatus: make(chan *UpDownStatus),
logger: zerolog.Nop(),
}
for _, opt := range opts {
opt(client)
}
return client
}
type ClientOpts func(u *Client)
func WithLogger(l zerolog.Logger) ClientOpts {
return func(u *Client) {
u.logger = l
}
}