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middleware/proxy: absorb httpproxy (#481)

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* middleware/proxy: absorb httpproxy

Move the httproxy into proxy. This adds and Exchanger interface which
is used to exchange the messages with the upstream.

The https_google upstream will re-resolve itself and update the upstream
hosts used every 300s.

* Remove and add TODO
This commit is contained in:
Miek Gieben 2017-02-06 19:32:48 +00:00 • committed by GitHub
parent 77f957d443
commit 123a76c91e
21 changed files with 466 additions and 827 deletions
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6
middleware/proxy/metrics.go
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@ -16,11 +16,11 @@ var (
Name: "request_duration_milliseconds",
Buckets: append(prometheus.DefBuckets, []float64{50, 100, 200, 500, 1000, 2000, 3000, 4000, 5000, 10000}...),
Help: "Histogram of the time (in milliseconds) each request took.",
}, []string{"zone"})
}, []string{"proto", "from"})
)
// OnStartup sets up the metrics on startup. This is done for all proxy protocols.
func OnStartup() error {
// OnStartupMetrics sets up the metrics on startup. This is done for all proxy protocols.
func OnStartupMetrics() error {
metricsOnce.Do(func() {
prometheus.MustRegister(RequestDuration)
})