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option_dialer.go
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option_dialer.go
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//
// Copyright (C) 2019-2020 Vdaas.org Vald team ( kpango, rinx, kmrmt )
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Package tcp provides tcp option
package tcp
import (
"crypto/tls"
"time"
"github.com/vdaas/vald/internal/cache"
"github.com/vdaas/vald/internal/timeutil"
)
type DialerOption func(*dialer)
var (
defaultDialerOptions = []DialerOption{
WithDialerKeepAlive("30s"),
WithDialerTimeout("30s"),
WithEnableDialerDualStack(),
WithDisableDNSCache(),
}
)
func WithCache(c cache.Cache) DialerOption {
return func(d *dialer) {
d.cache = c
}
}
func WithDNSRefreshDuration(dur string) DialerOption {
return func(d *dialer) {
if dur == "" {
return
}
pd, err := timeutil.Parse(dur)
if err != nil {
WithDNSRefreshDuration("30m")(d)
return
}
d.dnsRefreshDuration = pd
d.dnsRefreshDurationStr = dur
}
}
func WithDNSCacheExpiration(dur string) DialerOption {
return func(d *dialer) {
if dur == "" {
return
}
pd, err := timeutil.Parse(dur)
if err != nil {
WithDNSCacheExpiration("1h")(d)
return
}
d.dnsCacheExpiration = pd
d.dnsCacheExpirationStr = dur
if d.dnsCacheExpiration > 0 {
WithEnableDNSCache()(d)
}
}
}
func WithDialerTimeout(dur string) DialerOption {
return func(d *dialer) {
if dur == "" {
return
}
pd, err := timeutil.Parse(dur)
if err != nil {
pd = time.Second * 30
}
d.dialerTimeout = pd
}
}
func WithDialerKeepAlive(dur string) DialerOption {
return func(d *dialer) {
if dur == "" {
return
}
pd, err := timeutil.Parse(dur)
if err != nil {
pd = time.Second * 30
}
d.dialerTimeout = pd
}
}
func WithTLS(cfg *tls.Config) DialerOption {
return func(d *dialer) {
d.tlsConfig = cfg
}
}
func WithEnableDNSCache() DialerOption {
return func(d *dialer) {
d.dnsCache = true
}
}
func WithDisableDNSCache() DialerOption {
return func(d *dialer) {
d.dnsCache = false
}
}
func WithEnableDialerDualStack() DialerOption {
return func(d *dialer) {
d.dialerDualStack = true
}
}
func WithDisableDialerDualStack() DialerOption {
return func(d *dialer) {
d.dialerDualStack = false
}
}