1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
// Copyright (c) 2021 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package thriftudp
import (
"fmt"
"github.com/uber-go/tally/v4/thirdparty/github.com/apache/thrift/lib/go/thrift"
)
// TMultiUDPTransport does multiUDP as a thrift.TTransport
type TMultiUDPTransport struct {
transports []thrift.TTransport
}
// NewTMultiUDPClientTransport creates a set of net.UDPConn-backed TTransports for Thrift clients
// All writes are buffered and flushed in one UDP packet. If locHostPort is not "", it
// will be used as the local address for the connection
// Example:
// trans, err := thriftudp.NewTMultiUDPClientTransport([]string{"192.168.1.1:9090","192.168.1.2:9090"}, "")
func NewTMultiUDPClientTransport(
destHostPorts []string,
locHostPort string,
) (*TMultiUDPTransport, error) {
var transports []thrift.TTransport
for i := range destHostPorts {
trans, err := NewTUDPClientTransport(destHostPorts[i], locHostPort)
if err != nil {
return nil, err
}
transports = append(transports, trans)
}
return &TMultiUDPTransport{transports: transports}, nil
}
// Open the connections of the underlying transports
func (p *TMultiUDPTransport) Open() error {
for _, trans := range p.transports {
if err := trans.Open(); err != nil {
return err
}
}
return nil
}
// IsOpen returns true if the connections of the underlying transports are open
func (p *TMultiUDPTransport) IsOpen() bool {
for _, trans := range p.transports {
if open := trans.IsOpen(); !open {
return false
}
}
return true
}
// Close closes the connections of the underlying transports
func (p *TMultiUDPTransport) Close() error {
for _, trans := range p.transports {
if err := trans.Close(); err != nil {
return err
}
}
return nil
}
// Read is not supported for multiple underlying transports
func (p *TMultiUDPTransport) Read(buf []byte) (int, error) {
// Not applicable, required by TTransport however
return 0, fmt.Errorf("not supported")
}
// RemainingBytes is not supported for multiple underlying transports
func (p *TMultiUDPTransport) RemainingBytes() uint64 {
// Not applicable, required by TTransport however
return 0
}
// Write writes specified buf to the write buffer of underlying transports
func (p *TMultiUDPTransport) Write(buff []byte) (int, error) {
n := 0
for _, trans := range p.transports {
written, err := trans.Write(buff)
if err != nil {
return n, err
}
if written > n {
n = written
}
}
return n, nil
}
// Flush flushes the write buffer of the underlying transports
func (p *TMultiUDPTransport) Flush() error {
for _, trans := range p.transports {
if err := trans.Flush(); err != nil {
return err
}
}
return nil
}
|
