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use sync.Map in status

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This commit is contained in:
amarkowski 2017-11-03 11:55:15 +01:00
parent 8f9f10d4ee
commit ae7c62efe5
1 changed files with 12 additions and 9 deletions
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21
strategy.go
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@ -6,6 +6,7 @@ import (
"net" "net"
"strings" "strings"
"time" "time"
"sync"
) )
// NewStrategyDialer returns a new Strategy Dialer // NewStrategyDialer returns a new Strategy Dialer
@ -37,7 +38,7 @@ type rrDialer struct {
dialers []Dialer dialers []Dialer
idx int idx int
status map[int]bool status sync.Map
// for checking // for checking
website string website string
@ -48,12 +49,11 @@ type rrDialer struct {
func newRRDialer(dialers []Dialer, website string, duration int) *rrDialer { func newRRDialer(dialers []Dialer, website string, duration int) *rrDialer {
rr := &rrDialer{dialers: dialers} rr := &rrDialer{dialers: dialers}
rr.status = make(map[int]bool)
rr.website = website rr.website = website
rr.duration = duration rr.duration = duration
for k := range dialers { for k := range dialers {
rr.status[k] = true rr.status.Store(k,true)
go rr.checkDialer(k) go rr.checkDialer(k)
} }
@ -74,7 +74,8 @@ func (rr *rrDialer) NextDialer(dstAddr string) Dialer {
found := false found := false
for i := 0; i < n; i++ { for i := 0; i < n; i++ {
rr.idx = (rr.idx + 1) % n rr.idx = (rr.idx + 1) % n
if rr.status[rr.idx] { result, ok := rr.status.Load(rr.idx)
if (ok && result.(bool)) {
found = true found = true
break break
} }
@ -109,7 +110,7 @@ func (rr *rrDialer) checkDialer(idx int) {
startTime := time.Now() startTime := time.Now()
c, err := d.Dial("tcp", rr.website) c, err := d.Dial("tcp", rr.website)
if err != nil { if err != nil {
rr.status[idx] = false rr.status.Store(idx, false)
logf("proxy-check %s -> %s, set to DISABLED. error in dial: %s", d.Addr(), rr.website, err) logf("proxy-check %s -> %s, set to DISABLED. error in dial: %s", d.Addr(), rr.website, err)
continue continue
} }
@ -119,15 +120,15 @@ func (rr *rrDialer) checkDialer(idx int) {
_, err = io.ReadFull(c, buf) _, err = io.ReadFull(c, buf)
if err != nil { if err != nil {
rr.status[idx] = false rr.status.Store(idx, false)
logf("proxy-check %s -> %s, set to DISABLED. error in read: %s", d.Addr(), rr.website, err) logf("proxy-check %s -> %s, set to DISABLED. error in read: %s", d.Addr(), rr.website, err)
} else if bytes.Equal([]byte("HTTP"), buf) { } else if bytes.Equal([]byte("HTTP"), buf) {
rr.status[idx] = true rr.status.Store(idx, true)
retry = 2 retry = 2
dialTime := time.Since(startTime) dialTime := time.Since(startTime)
logf("proxy-check %s -> %s, set to ENABLED. connect time: %s", d.Addr(), rr.website, dialTime.String()) logf("proxy-check %s -> %s, set to ENABLED. connect time: %s", d.Addr(), rr.website, dialTime.String())
} else { } else {
rr.status[idx] = false rr.status.Store(idx, false)
logf("proxy-check %s -> %s, set to DISABLED. server response: %s", d.Addr(), rr.website, buf) logf("proxy-check %s -> %s, set to DISABLED. server response: %s", d.Addr(), rr.website, buf)
} }
@ -148,7 +149,9 @@ func newHADialer(dialers []Dialer, webhost string, duration int) Dialer {
func (ha *haDialer) Dial(network, addr string) (net.Conn, error) { func (ha *haDialer) Dial(network, addr string) (net.Conn, error) {
d := ha.dialers[ha.idx] d := ha.dialers[ha.idx]
if !ha.status[ha.idx] { result, ok := ha.status.Load(ha.idx)
if (ok && !result.(bool)) {
d = ha.NextDialer(addr) d = ha.NextDialer(addr)
} }