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Golang Scope.TimingDuration方法代码示例

本文整理汇总了Golang中github.com/letsencrypt/boulder/metrics.Scope.TimingDuration方法的典型用法代码示例。如果您正苦于以下问题:Golang Scope.TimingDuration方法的具体用法?Golang Scope.TimingDuration怎么用?Golang Scope.TimingDuration使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在github.com/letsencrypt/boulder/metrics.Scope的用法示例。


在下文中一共展示了Scope.TimingDuration方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: exchangeOne

// exchangeOne performs a single DNS exchange with a randomly chosen server
// out of the server list, returning the response, time, and error (if any).
// This method sets the DNSSEC OK bit on the message to true before sending
// it to the resolver in case validation isn't the resolvers default behaviour.
func (dnsResolver *DNSResolverImpl) exchangeOne(hostname string, qtype uint16, msgStats metrics.Scope) (rsp *dns.Msg, err error) {
	m := new(dns.Msg)
	// Set question type
	m.SetQuestion(dns.Fqdn(hostname), qtype)
	// Set DNSSEC OK bit for resolver
	m.SetEdns0(4096, true)

	if len(dnsResolver.Servers) < 1 {
		err = fmt.Errorf("Not configured with at least one DNS Server")
		return
	}

	dnsResolver.stats.Inc("Rate", 1)

	// Randomly pick a server
	chosenServer := dnsResolver.Servers[rand.Intn(len(dnsResolver.Servers))]

	msg, rtt, err := dnsResolver.DNSClient.Exchange(m, chosenServer)
	msgStats.TimingDuration("RTT", rtt)
	if err == nil {
		msgStats.Inc("Successes", 1)
	} else {
		msgStats.Inc("Errors", 1)
	}
	return msg, err
}
开发者ID:paulehoffman,项目名称:boulder,代码行数:30,代码来源:dns.go

示例2: exchangeOne

// exchangeOne performs a single DNS exchange with a randomly chosen server
// out of the server list, returning the response, time, and error (if any).
// This method sets the DNSSEC OK bit on the message to true before sending
// it to the resolver in case validation isn't the resolvers default behaviour.
func (dnsResolver *DNSResolverImpl) exchangeOne(ctx context.Context, hostname string, qtype uint16, msgStats metrics.Scope) (*dns.Msg, error) {
	m := new(dns.Msg)
	// Set question type
	m.SetQuestion(dns.Fqdn(hostname), qtype)
	// Set DNSSEC OK bit for resolver
	m.SetEdns0(4096, true)

	if len(dnsResolver.servers) < 1 {
		return nil, fmt.Errorf("Not configured with at least one DNS Server")
	}

	dnsResolver.stats.Inc("Rate", 1)

	// Randomly pick a server
	chosenServer := dnsResolver.servers[rand.Intn(len(dnsResolver.servers))]

	client := dnsResolver.dnsClient

	tries := 1
	start := dnsResolver.clk.Now()
	msgStats.Inc("Calls", 1)
	defer func() {
		msgStats.TimingDuration("Latency", dnsResolver.clk.Now().Sub(start))
	}()
	for {
		msgStats.Inc("Tries", 1)
		ch := make(chan dnsResp, 1)

		go func() {
			rsp, rtt, err := client.Exchange(m, chosenServer)
			msgStats.TimingDuration("SingleTryLatency", rtt)
			ch <- dnsResp{m: rsp, err: err}
		}()
		select {
		case <-ctx.Done():
			msgStats.Inc("Cancels", 1)
			msgStats.Inc("Errors", 1)
			return nil, ctx.Err()
		case r := <-ch:
			if r.err != nil {
				msgStats.Inc("Errors", 1)
				operr, ok := r.err.(*net.OpError)
				isRetryable := ok && operr.Temporary()
				hasRetriesLeft := tries < dnsResolver.maxTries
				if isRetryable && hasRetriesLeft {
					tries++
					continue
				} else if isRetryable && !hasRetriesLeft {
					msgStats.Inc("RanOutOfTries", 1)
				}
			} else {
				msgStats.Inc("Successes", 1)
			}
			return r.m, r.err
		}
	}
}
开发者ID:andrewrothstein,项目名称:boulder,代码行数:61,代码来源:dns.go


注:本文中的github.com/letsencrypt/boulder/metrics.Scope.TimingDuration方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。