client.go

package grpcdatanodeclient

import (
	"context"
	"time"

	"github.com/zilliztech/milvus-distributed/internal/log"
	"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
	"github.com/zilliztech/milvus-distributed/internal/proto/datapb"
	"github.com/zilliztech/milvus-distributed/internal/proto/internalpb2"
	"github.com/zilliztech/milvus-distributed/internal/util/retry"

	"go.uber.org/zap"
	"google.golang.org/grpc"
)

type Client struct {
	ctx     context.Context
	grpc    datapb.DataNodeClient
	conn    *grpc.ClientConn
	address string
}

func NewClient(address string) *Client {
	return &Client{
		address: address,
		ctx:     context.Background(),
	}
}

func (c *Client) Init() error {

	connectGrpcFunc := func() error {
		log.Debug("DataNode connect czs::", zap.String("address", c.address))
		conn, err := grpc.DialContext(c.ctx, c.address, grpc.WithInsecure(), grpc.WithBlock())
		if err != nil {
			return err
		}
		c.conn = conn
		return nil
	}

	err := retry.Retry(100, time.Millisecond*200, connectGrpcFunc)
	if err != nil {
		return err
	}
	c.grpc = datapb.NewDataNodeClient(c.conn)
	return nil
}

func (c *Client) Start() error {
	return nil
}

func (c *Client) Stop() error {
	return c.conn.Close()
}

func (c *Client) GetComponentStates(empty *commonpb.Empty) (*internalpb2.ComponentStates, error) {
	return c.grpc.GetComponentStates(context.Background(), empty)
}

func (c *Client) WatchDmChannels(in *datapb.WatchDmChannelRequest) (*commonpb.Status, error) {
	return c.grpc.WatchDmChannels(context.Background(), in)
}

func (c *Client) FlushSegments(in *datapb.FlushSegRequest) (*commonpb.Status, error) {
	return c.grpc.FlushSegments(context.Background(), in)
}