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aline_grpc_client.go
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aline_grpc_client.go
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package client
import (
"context"
"io"
"github.com/hamster-shared/aline-engine/grpc/api"
"github.com/hamster-shared/aline-engine/logger"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
)
type AlineGrpcClient struct {
rpc api.AlineRPCClient
RecvMsgChan chan *api.AlineMessage
SendMsgChan chan *api.AlineMessage
ErrorChan chan error
}
func GrpcClientStart(masterAddress string) (*AlineGrpcClient, error) {
conn, err := grpc.Dial(masterAddress, grpc.WithTransportCredentials(insecure.NewCredentials()))
if err != nil {
logger.Errorf("grpc did not connect: %v", err)
return nil, err
}
// 不关闭,在程序运行期间,一直保持连接
// defer conn.Close()
alineGrpcClient := &AlineGrpcClient{
rpc: api.NewAlineRPCClient(conn),
RecvMsgChan: make(chan *api.AlineMessage, 10000),
SendMsgChan: make(chan *api.AlineMessage, 10000),
ErrorChan: make(chan error, 100),
}
err = alineGrpcClient.handleMessage()
if err != nil {
return nil, err
}
return alineGrpcClient, nil
}
func (c *AlineGrpcClient) handleMessage() error {
stream, err := c.rpc.AlineChat(context.Background())
if err != nil {
logger.Errorf("gprc client send message failed: %v", err)
return err
}
go func() {
for {
msg := <-c.SendMsgChan
if err := stream.Send(msg); err != nil {
logger.Errorf("gprc client send message failed: %v", err)
c.ErrorChan <- err
panic(err)
} else {
logger.Tracef("gprc client send message success: msg.Type: %v", msg.Type)
logger.Tracef("len(c.SendMsgChan): %v", len(c.SendMsgChan))
}
}
}()
go func() {
for {
msg, err := stream.Recv()
if err != nil {
if err == io.EOF {
logger.Warnf("gprc client recv message failed: %v", err)
stream.CloseSend()
return
}
logger.Errorf("gprc client recv message failed: %v", err)
c.ErrorChan <- err
return
}
logger.Tracef("gprc client recv message success: msg.Type: %v", msg.Type)
c.RecvMsgChan <- msg
logger.Tracef("len(c.RecvMsgChan): %v", len(c.RecvMsgChan))
}
}()
return nil
}