erigon-pulse/erigon-lib/direct/downloader_client.go
Alex Sharov d41d523050
Downloader: add ProhibitNewDownloads() (#8939)
"whitelisting" mechanism (list of files - stored in DB) - which
protecting us from downloading new files after upgrade/downgrade was
broken. And seems it became over-complicated with time.
I replacing it by 1 persistent flag inside downloader:
"prohibit_new_downloads.lock"
Erigon will turn downloader into this mode after
downloading/verification of first snapshots.


```
//Corner cases:
	// - Erigon generated file X with hash H1. User upgraded Erigon. New version has preverified file X with hash H2. Must ignore H2 (don't send to Downloader)
	// - Erigon "download once": means restart/upgrade/downgrade must not download files (and will be fast)
	// - After "download once" - Erigon will produce and seed new files
```

------
`downloader --seedbox` is never "prohibit new downloads"
2023-12-12 16:05:56 +07:00

51 lines
1.9 KiB
Go

/*
Copyright 2021 Erigon contributors
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 direct
import (
"context"
proto_downloader "github.com/ledgerwatch/erigon-lib/gointerfaces/downloader"
"google.golang.org/grpc"
"google.golang.org/protobuf/types/known/emptypb"
)
type DownloaderClient struct {
server proto_downloader.DownloaderServer
}
func NewDownloaderClient(server proto_downloader.DownloaderServer) *DownloaderClient {
return &DownloaderClient{server: server}
}
func (c *DownloaderClient) Add(ctx context.Context, in *proto_downloader.AddRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
return c.server.Add(ctx, in)
}
func (c *DownloaderClient) ProhibitNewDownloads(ctx context.Context, in *proto_downloader.ProhibitNewDownloadsRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
return c.server.ProhibitNewDownloads(ctx, in)
}
func (c *DownloaderClient) Delete(ctx context.Context, in *proto_downloader.DeleteRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
return c.server.Delete(ctx, in)
}
func (c *DownloaderClient) Verify(ctx context.Context, in *proto_downloader.VerifyRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
return c.server.Verify(ctx, in)
}
func (c *DownloaderClient) Stats(ctx context.Context, in *proto_downloader.StatsRequest, opts ...grpc.CallOption) (*proto_downloader.StatsReply, error) {
return c.server.Stats(ctx, in)
}