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// compile
// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This code failed on arm64 in the register allocator.
// See issue 33355.
package server
import (
"bytes"
"sync"
)
type client struct {
junk [4]int
mu sync.Mutex
srv *Server
gw *gateway
msgb [100]byte
}
type gateway struct {
cfg *gatewayCfg
outsim *sync.Map
}
type gatewayCfg struct {
replyPfx []byte
}
type Account struct {
Name string
}
type Server struct {
gateway *srvGateway
}
type srvGateway struct {
outo []*client
}
type subscription struct {
queue []byte
client *client
}
type outsie struct {
ni map[string]struct{}
sl *Sublist
qsubs int
}
type Sublist struct {
}
type SublistResult struct {
psubs []*subscription
qsubs [][]*subscription
}
var subPool = &sync.Pool{}
func (c *client) sendMsgToGateways(acc *Account, msg, subject, reply []byte, qgroups [][]byte) {
var gws []*client
gw := c.srv.gateway
for i := 0; i < len(gw.outo); i++ {
gws = append(gws, gw.outo[i])
}
var (
subj = string(subject)
queuesa = [512]byte{}
queues = queuesa[:0]
mreply []byte
dstPfx []byte
checkReply = len(reply) > 0
)
sub := subPool.Get().(*subscription)
if subjectStartsWithGatewayReplyPrefix(subject) {
dstPfx = subject[:8]
}
for i := 0; i < len(gws); i++ {
gwc := gws[i]
if dstPfx != nil {
gwc.mu.Lock()
ok := bytes.Equal(dstPfx, gwc.gw.cfg.replyPfx)
gwc.mu.Unlock()
if !ok {
continue
}
} else {
qr := gwc.gatewayInterest(acc.Name, subj)
queues = queuesa[:0]
for i := 0; i < len(qr.qsubs); i++ {
qsubs := qr.qsubs[i]
queue := qsubs[0].queue
add := true
for _, qn := range qgroups {
if bytes.Equal(queue, qn) {
add = false
break
}
}
if add {
qgroups = append(qgroups, queue)
}
}
if len(queues) == 0 {
continue
}
}
if checkReply {
checkReply = false
mreply = reply
}
mh := c.msgb[:10]
mh = append(mh, subject...)
if len(queues) > 0 {
mh = append(mh, mreply...)
mh = append(mh, queues...)
}
sub.client = gwc
}
subPool.Put(sub)
}
func subjectStartsWithGatewayReplyPrefix(subj []byte) bool {
return len(subj) > 8 && string(subj[:4]) == "foob"
}
func (c *client) gatewayInterest(acc, subj string) *SublistResult {
ei, _ := c.gw.outsim.Load(acc)
var r *SublistResult
e := ei.(*outsie)
r = e.sl.Match(subj)
return r
}
func (s *Sublist) Match(subject string) *SublistResult {
return nil
}