135 lines
4.3 KiB
Go
135 lines
4.3 KiB
Go
/*
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* Copyright 2020 The Dragonfly Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package client
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import (
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"context"
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"sync"
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"time"
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"github.com/pkg/errors"
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"google.golang.org/grpc"
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logger "d7y.io/dragonfly/v2/internal/dflog"
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"d7y.io/dragonfly/v2/internal/dfnet"
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"d7y.io/dragonfly/v2/pkg/rpc"
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"d7y.io/dragonfly/v2/pkg/rpc/base"
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"d7y.io/dragonfly/v2/pkg/rpc/cdnsystem"
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)
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func GetClientByAddr(addrs []dfnet.NetAddr, opts ...grpc.DialOption) (CdnClient, error) {
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if len(addrs) == 0 {
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return nil, errors.New("address list of cdn is empty")
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}
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cc := &cdnClient{
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rpc.NewConnection(context.Background(), "cdn", addrs, []rpc.ConnOption{
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rpc.WithConnExpireTime(60 * time.Second),
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rpc.WithDialOption(opts),
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}),
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}
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return cc, nil
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}
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var once sync.Once
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var elasticCdnClient *cdnClient
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func GetElasticClientByAddrs(addrs []dfnet.NetAddr, opts ...grpc.DialOption) (CdnClient, error) {
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once.Do(func() {
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elasticCdnClient = &cdnClient{
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rpc.NewConnection(context.Background(), "cdn-elastic", make([]dfnet.NetAddr, 0), []rpc.ConnOption{
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rpc.WithConnExpireTime(60 * time.Second),
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rpc.WithDialOption(opts),
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}),
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}
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})
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err := elasticCdnClient.Connection.AddServerNodes(addrs)
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if err != nil {
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return nil, err
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}
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return elasticCdnClient, nil
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}
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// CdnClient see cdnsystem.CdnClient
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type CdnClient interface {
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ObtainSeeds(ctx context.Context, sr *cdnsystem.SeedRequest, opts ...grpc.CallOption) (*PieceSeedStream, error)
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GetPieceTasks(ctx context.Context, addr dfnet.NetAddr, req *base.PieceTaskRequest, opts ...grpc.CallOption) (*base.PiecePacket, error)
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SyncPieceTasks(ctx context.Context, addr dfnet.NetAddr, ptr *base.PieceTaskRequest, opts ...grpc.CallOption) (cdnsystem.Seeder_SyncPieceTasksClient, error)
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UpdateState(addrs []dfnet.NetAddr)
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Close() error
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}
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type cdnClient struct {
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*rpc.Connection
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}
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var _ CdnClient = (*cdnClient)(nil)
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func (cc *cdnClient) getCdnClient(key string, stick bool) (cdnsystem.SeederClient, string, error) {
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clientConn, err := cc.Connection.GetClientConn(key, stick)
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if err != nil {
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return nil, "", errors.Wrapf(err, "get ClientConn for hashKey %s", key)
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}
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return cdnsystem.NewSeederClient(clientConn), clientConn.Target(), nil
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}
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func (cc *cdnClient) getSeederClientWithTarget(target string) (cdnsystem.SeederClient, error) {
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conn, err := cc.Connection.GetClientConnByTarget(target)
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if err != nil {
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return nil, err
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}
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return cdnsystem.NewSeederClient(conn), nil
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}
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func (cc *cdnClient) ObtainSeeds(ctx context.Context, sr *cdnsystem.SeedRequest, opts ...grpc.CallOption) (*PieceSeedStream, error) {
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return newPieceSeedStream(ctx, cc, sr.TaskId, sr, opts)
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}
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func (cc *cdnClient) GetPieceTasks(ctx context.Context, addr dfnet.NetAddr, req *base.PieceTaskRequest, opts ...grpc.CallOption) (*base.PiecePacket, error) {
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res, err := rpc.ExecuteWithRetry(func() (interface{}, error) {
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client, err := cc.getSeederClientWithTarget(addr.GetEndpoint())
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if err != nil {
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return nil, err
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}
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return client.GetPieceTasks(ctx, req, opts...)
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}, 0.2, 2.0, 3, nil)
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if err != nil {
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logger.WithTaskID(req.TaskId).Infof("GetPieceTasks: invoke cdn node %s GetPieceTasks failed: %v", addr.GetEndpoint(), err)
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return nil, err
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}
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return res.(*base.PiecePacket), nil
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}
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func (cc *cdnClient) SyncPieceTasks(ctx context.Context, addr dfnet.NetAddr, req *base.PieceTaskRequest, opts ...grpc.CallOption) (cdnsystem.Seeder_SyncPieceTasksClient, error) {
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res, err := rpc.ExecuteWithRetry(func() (interface{}, error) {
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client, err := cc.getSeederClientWithTarget(addr.GetEndpoint())
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if err != nil {
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return nil, err
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}
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return client.GetPieceTasks(ctx, req, opts...)
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}, 0.2, 2.0, 3, nil)
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if err != nil {
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logger.WithTaskID(req.TaskId).Infof("SyncPieceTasks: invoke cdn node %s SyncPieceTasks failed: %v", addr.GetEndpoint(), err)
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return nil, err
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}
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client := res.(cdnsystem.Seeder_SyncPieceTasksClient)
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return client, client.Send(req)
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}
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