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219 lines
7.7 KiB
219 lines
7.7 KiB
package downloader
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import (
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"context"
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"fmt"
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"time"
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pb "github.com/harmony-one/harmony/api/service/legacysync/downloader/proto"
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"github.com/harmony-one/harmony/internal/utils"
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"google.golang.org/grpc"
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"google.golang.org/grpc/connectivity"
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)
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// Client is the client model for downloader package.
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type Client struct {
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dlClient pb.DownloaderClient
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opts []grpc.DialOption
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conn *grpc.ClientConn
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addr string
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}
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// ClientSetup setups a Client given ip and port.
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func ClientSetup(ip, port string, withBlock bool) *Client {
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client := Client{}
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client.opts = append(client.opts, grpc.WithInsecure())
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if withBlock {
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client.opts = append(client.opts, grpc.WithBlock())
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}
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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client.addr = fmt.Sprintf("%s:%s", ip, port)
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var err error
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client.conn, err = grpc.DialContext(ctx, client.addr, client.opts...)
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if err != nil {
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utils.Logger().Error().Err(err).Str("ip", ip).Msg("[SYNC] client.go:ClientSetup fail to dial")
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return nil
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}
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utils.Logger().Debug().Str("ip", ip).Msg("[SYNC] grpc connect successfully")
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client.dlClient = pb.NewDownloaderClient(client.conn)
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return &client
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}
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// IsReady returns true if client is ready
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func (client *Client) IsReady() bool {
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return client.conn.GetState() == connectivity.Ready
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}
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// IsConnecting returns true if client is connecting
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func (client *Client) IsConnecting() bool {
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return client.conn.GetState() == connectivity.Connecting
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}
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// State returns current Connecting state
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func (client *Client) State() connectivity.State {
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return client.conn.GetState()
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}
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// WaitForConnection waits for client to connect
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func (client *Client) WaitForConnection(t time.Duration) bool {
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ctx, cancel := context.WithTimeout(context.Background(), t)
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defer cancel()
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if client.conn.GetState() == connectivity.Ready {
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return true
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}
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if ready := client.conn.WaitForStateChange(ctx, client.conn.GetState()); !ready {
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return false
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} else {
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return client.conn.GetState() == connectivity.Ready
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}
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}
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// Close closes the Client.
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func (client *Client) Close(reason string) {
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err := client.conn.Close()
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if err != nil {
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utils.Logger().Info().
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Str("peerAddress", client.addr).
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Msg("[SYNC] unable to close peer connection")
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return
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}
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utils.Logger().Info().
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Str("peerAddress", client.addr).
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Str("reason", reason).
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Msg("[SYNC] peer connection closed")
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}
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// GetBlockHashes gets block hashes from all the peers by calling grpc request.
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func (client *Client) GetBlockHashes(startHash []byte, size uint32, ip, port string) *pb.DownloaderResponse {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{Type: pb.DownloaderRequest_BLOCKHASH, BlockHash: startHash, Size: size}
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request.Ip = ip
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request.Port = port
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response, err := client.dlClient.Query(ctx, request)
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if err != nil {
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utils.Logger().Error().Err(err).Str("target", client.conn.Target()).Msg("[SYNC] GetBlockHashes query failed")
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}
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return response
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}
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// GetBlocksByHeights gets blocks from peers by calling grpc request.
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func (client *Client) GetBlocksByHeights(heights []uint64) *pb.DownloaderResponse {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{
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Type: pb.DownloaderRequest_BLOCKBYHEIGHT,
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Heights: heights,
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}
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response, err := client.dlClient.Query(ctx, request, grpc.MaxCallRecvMsgSize(32*1024*1024))
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if err != nil {
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utils.Logger().Error().Err(err).Str("target", client.conn.Target()).Msg("[SYNC] GetBlocksByHeights query failed")
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}
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return response
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}
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// GetBlockHeaders gets block headers in serialization byte array by calling a grpc request.
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func (client *Client) GetBlockHeaders(hashes [][]byte) *pb.DownloaderResponse {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{Type: pb.DownloaderRequest_BLOCKHEADER}
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request.Hashes = make([][]byte, len(hashes))
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for i := range hashes {
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request.Hashes[i] = make([]byte, len(hashes[i]))
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copy(request.Hashes[i], hashes[i])
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}
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response, err := client.dlClient.Query(ctx, request)
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if err != nil {
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utils.Logger().Error().Err(err).Str("target", client.conn.Target()).Msg("[SYNC] downloader/client.go:GetBlockHeaders query failed")
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}
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return response
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}
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// GetBlocks gets blocks in serialization byte array by calling a grpc request.
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func (client *Client) GetBlocks(hashes [][]byte) *pb.DownloaderResponse {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{Type: pb.DownloaderRequest_BLOCK}
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request.Hashes = make([][]byte, len(hashes))
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for i := range hashes {
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request.Hashes[i] = make([]byte, len(hashes[i]))
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copy(request.Hashes[i], hashes[i])
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}
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response, err := client.dlClient.Query(ctx, request)
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if err != nil {
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utils.Logger().Error().Err(err).Str("target", client.conn.Target()).Msg("[SYNC] downloader/client.go:GetBlocks query failed")
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}
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return response
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}
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// GetBlocksAndSigs get blockWithSig in serialization byte array by calling a grpc request
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func (client *Client) GetBlocksAndSigs(hashes [][]byte) *pb.DownloaderResponse {
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ctx, cancel := context.WithTimeout(context.Background(), 300*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{Type: pb.DownloaderRequest_BLOCK, GetBlocksWithSig: true}
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request.Hashes = make([][]byte, len(hashes))
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for i := range hashes {
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request.Hashes[i] = make([]byte, len(hashes[i]))
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copy(request.Hashes[i], hashes[i])
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}
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response, err := client.dlClient.Query(ctx, request)
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if err != nil {
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utils.Logger().Error().Err(err).Str("target", client.conn.Target()).Msg("[SYNC] downloader/client.go:GetBlocksAndSigs query failed")
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}
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return response
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}
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// Register will register node's ip/port information to peers receive newly created blocks in future
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// hash is the bytes of "ip:port" string representation
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func (client *Client) Register(hash []byte, ip, port string) *pb.DownloaderResponse {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{Type: pb.DownloaderRequest_REGISTER, RegisterWithSig: true}
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request.PeerHash = make([]byte, len(hash))
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copy(request.PeerHash, hash)
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request.Ip = ip
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request.Port = port
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response, err := client.dlClient.Query(ctx, request)
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if err != nil || response == nil {
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utils.Logger().Error().Err(err).Str("target", client.conn.Target()).Interface("response", response).Msg("[SYNC] client.go:Register failed")
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}
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return response
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}
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// PushNewBlock will send the lastest verified block to registered nodes
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func (client *Client) PushNewBlock(selfPeerHash [20]byte, blockBytes []byte, timeout bool) (*pb.DownloaderResponse, error) {
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ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{Type: pb.DownloaderRequest_NEWBLOCK}
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request.BlockHash = make([]byte, len(blockBytes))
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copy(request.BlockHash, blockBytes)
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request.PeerHash = make([]byte, len(selfPeerHash))
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copy(request.PeerHash, selfPeerHash[:])
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if timeout {
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request.Type = pb.DownloaderRequest_REGISTERTIMEOUT
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}
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response, err := client.dlClient.Query(ctx, request)
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if err != nil {
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utils.Logger().Error().Err(err).Str("target", client.conn.Target()).Msg("[SYNC] unable to send new block to unsync node")
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}
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return response, err
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}
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// GetBlockChainHeight gets the blockheight from peer
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func (client *Client) GetBlockChainHeight() (*pb.DownloaderResponse, error) {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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request := &pb.DownloaderRequest{Type: pb.DownloaderRequest_BLOCKHEIGHT}
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response, err := client.dlClient.Query(ctx, request)
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if err != nil {
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return nil, err
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}
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return response, nil
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}
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