-
Notifications
You must be signed in to change notification settings - Fork 5
/
event_drive.go
121 lines (117 loc) · 3.73 KB
/
event_drive.go
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
121
package client
import (
"github.com/nyan233/littlerpc/core/common/errorhandler"
"github.com/nyan233/littlerpc/core/common/msgparser"
"github.com/nyan233/littlerpc/core/common/transport"
"github.com/nyan233/littlerpc/core/protocol/message"
"github.com/nyan233/littlerpc/core/utils/random"
"io"
"math"
)
func (c *Client) onMessage(conn transport.ConnAdapter, bytes []byte) {
desc, ok := c.connSourceSet.LoadOk(conn)
if !ok {
c.logger.Error("LRPC: OnMessage lookup conn failed")
err := conn.Close()
if err != nil {
c.logger.Error("LRPC: close conn failed: %v", err)
}
return
}
allMsg, err := desc.parser.Parse(bytes)
if err != nil {
c.logger.Error("LRPC: parse message failed: %v", err)
err := conn.Close()
if err != nil {
c.logger.Error("LRPC: close conn failed: %v", err)
}
return
}
if allMsg == nil || len(allMsg) <= 0 {
return
}
for _, pMsg := range allMsg {
// 单个连接返回最大能分配的Message Id代表遇到了服务端解析器解析失败的错误
// 这种情况下, 服务端没办法知道真正的Message Id, 如果不通知在这个连接上等待的回复调用者
// 的话就会导致对应调用被永远阻塞, 要是直接关闭连接的话就会导致无法知道真正出现的问题, 所以通知完
// 所有的调用者之后再关闭连接
if pMsg.Message.GetMsgId() == math.MaxUint64 {
oldNotify := desc.SwapNotifyChannel(nil)
if oldNotify == nil {
c.logger.Warn("LRPC: in onMessage time trigger onClose or parse error")
return
}
pErr := c.handleReturnError(pMsg.Message)
// 没有任何接收者则打印错误, 避免错误被忽略
if len(oldNotify) == 0 {
c.logger.Warn("LRPC: error not receiver : %v", pErr)
}
for _, channel := range oldNotify {
if pErr == nil {
pErr = c.eHandle.LWarpErrorDesc(errorhandler.ErrServer, "server parser error time return invalid response")
}
select {
case channel <- Complete{Error: pErr}:
default:
c.logger.Warn("LRPC: server parser parse message failed, but client notifySet channel is block")
}
}
_ = desc.conn.Close()
return
}
switch pMsg.Message.GetMsgType() {
case message.ContextCancel:
// context cancel消息暂时不通知, 因为用的MsgId跟当前的Caller获得的MsgId一致
// 这样会导致后续消息找不到通知通道,
continue
case message.Return:
done, ok := desc.LoadNotify(pMsg.Message.GetMsgId())
if !ok {
c.logger.Error("LRPC: Message read complete but done channel not found")
continue
}
select {
case done <- Complete{Message: pMsg.Message}:
break
default:
c.logger.Error("LRPC: OnMessage done channel is block")
}
case message.Pong:
// TODO: keep-alive重置连接定时器
default:
c.logger.Warn("LRPC: unknown message type")
}
}
}
func (c *Client) onOpen(conn transport.ConnAdapter) {
desc := &connSource{
conn: conn,
parser: c.cfg.ParserFactory(&msgparser.SimpleAllocTor{SharedPool: sharedPool.TakeMessagePool()}, 4096),
initSeq: uint64(random.FastRand()),
LocalAddr: conn.LocalAddr(),
RemoteAddr: conn.RemoteAddr(),
notifySet: make(map[uint64]chan Complete, 1024),
}
c.connSourceSet.Store(conn, desc)
return
}
func (c *Client) onClose(conn transport.ConnAdapter, err error) {
desc, ok := c.connSourceSet.LoadOk(conn)
if !ok {
c.logger.Error("LRPC: OnClose lookup conn failed")
return
}
oldNotify := desc.SwapNotifyChannel(nil)
if oldNotify == nil {
c.logger.Warn("LRPC: onMessage click parse error")
} else {
for _, channel := range oldNotify {
channel <- Complete{
Error: c.eHandle.LWarpErrorDesc(errorhandler.ErrConnection, "client receive onClose"),
}
}
}
if err != nil && err != io.EOF {
c.logger.Error("LRPC: OnClose err : %v", err)
}
}