/
client.go
65 lines (55 loc) · 1.9 KB
/
client.go
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package grpc
import (
"context"
"fmt"
"time"
"github.com/abulo/ratel/v3/client/grpc/resolver"
"github.com/abulo/ratel/v3/core/ecode"
"github.com/abulo/ratel/v3/core/logger"
"github.com/sirupsen/logrus"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
)
func newGRPCClient(config *Config) (*grpc.ClientConn, error) {
var ctx = context.Background()
dialOptions := getDialOptions(config)
// 默认配置使用block
if config.Block {
if config.DialTimeout > time.Duration(0) {
var cancel context.CancelFunc
ctx, cancel = context.WithTimeout(ctx, config.DialTimeout)
defer cancel()
}
dialOptions = append(dialOptions, grpc.WithBlock())
}
conn, err := grpc.DialContext(ctx, config.Address, dialOptions...)
// conn, err := grpc.DialContext(ctx, config.Address, append(dialOptions, grpc.WithBlock())...)
if err != nil {
logger.Logger.WithFields(logrus.Fields{
"err": err,
}).Panic("dial grpc server failed, connect without block,", ecode.ErrKindRequestErr)
conn, err = grpc.DialContext(context.Background(), config.Address, dialOptions...)
if err != nil {
logger.Logger.WithFields(logrus.Fields{
"err": err,
}).Panic("connect without block failed", ecode.ErrKindRequestErr)
return nil, err
}
}
logger.Logger.Info("start grpc client")
return conn, nil
}
func getDialOptions(config *Config) []grpc.DialOption {
dialOptions := config.dialOptions
if config.KeepAlive != nil {
dialOptions = append(dialOptions, grpc.WithKeepaliveParams(*config.KeepAlive))
}
dialOptions = append(dialOptions,
grpc.WithTransportCredentials(insecure.NewCredentials()),
grpc.WithResolvers(resolver.NewEtcdBuilder(config.Etcd.GetNode(), config.Etcd.MustSingleton())),
grpc.WithDisableServiceConfig(),
)
svcCfg := fmt.Sprintf(`{"loadBalancingPolicy":"%s"}`, config.BalancerName)
dialOptions = append(dialOptions, grpc.WithDefaultServiceConfig(svcCfg))
return dialOptions
}