github.com/cloudwego/kitex@v0.9.0/pkg/remote/remotecli/stream.go (about)

     1  /*
     2   * Copyright 2021 CloudWeGo Authors
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *     http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  // Package remotecli for remote client
    18  package remotecli
    19  
    20  import (
    21  	"context"
    22  
    23  	"github.com/cloudwego/kitex/pkg/remote"
    24  	"github.com/cloudwego/kitex/pkg/remote/trans/nphttp2"
    25  	"github.com/cloudwego/kitex/pkg/rpcinfo"
    26  	"github.com/cloudwego/kitex/pkg/streaming"
    27  )
    28  
    29  // NewStream create a client side stream
    30  func NewStream(ctx context.Context, ri rpcinfo.RPCInfo, handler remote.ClientTransHandler, opt *remote.ClientOption) (streaming.Stream, error) {
    31  	cm := NewConnWrapper(opt.ConnPool)
    32  	var err error
    33  	for _, shdlr := range opt.StreamingMetaHandlers {
    34  		ctx, err = shdlr.OnConnectStream(ctx)
    35  		if err != nil {
    36  			return nil, err
    37  		}
    38  	}
    39  	rawConn, err := cm.GetConn(ctx, opt.Dialer, ri)
    40  	if err != nil {
    41  		return nil, err
    42  	}
    43  	return nphttp2.NewStream(ctx, opt.SvcInfo, rawConn, handler), nil
    44  }