Add TO Go cdns/health and cdns/{name}/health #2305

rob05c · 2018-05-19T23:45:05Z

Rewrites /cdns/health and /cdns/{{name}}/health to Go. Closes #3778 and closes #3779 .

asfgit · 2018-05-19T23:53:46Z

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asfgit · 2018-05-20T00:43:37Z

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asfgit · 2018-05-22T15:57:32Z

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asfgit · 2018-06-05T15:25:25Z

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asfgit · 2018-06-23T16:24:31Z

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asfgit · 2018-06-23T17:24:02Z

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asfgit · 2018-06-23T20:10:00Z

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dneuman64 · 2018-06-25T22:09:12Z

lib/go-tc/enum.go

@@ -53,6 +53,8 @@ type DeliveryServiceName string
 // CacheType is the type (or tier) of a CDN cache.
 type CacheType string

+const MonitorTypeName = "RASCAL"


Do we think this should be a config? I have seen several times now where the type "RASCAL" was hard-coded and we had to change our TM type. IMO you should be able to make the type whatever you want and it should work.

I think it should definitely be a config, once we've moved everything to Go. But right now, it's still hard-coded all over Perl.

I don't think we should make a config yet, which would make people think they could change it, when it'd still break to be anything but "RASCAL".

But definitely +100 when it's all Go, and we can set one variable. I've wanted to change our db "RASCAL" type to something like "monitor" for ages.

dneuman64 · 2018-06-25T22:15:36Z

I would expect a heathtest.go to be a part of this PR is there a reason it is not included?

rob05c · 2018-06-26T20:03:55Z

Not sure what you mean. What would be in healthtest.go?

asfgit · 2018-07-05T19:56:53Z

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asfgit · 2018-07-09T17:09:46Z

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asfgit · 2018-07-19T02:41:28Z

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asf-ci · 2019-09-16T14:49:58Z

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mhoppa

One minor comment - also should we be adding tests?

mhoppa · 2019-09-16T14:59:49Z

traffic_ops/traffic_ops_golang/util/monitorhlp/monitorhlp.go

+	return monitors, nil
+}
+
+func GetCRStates(monitorFQDN string, client *http.Client) (tc.CRStates, error) {


Given this looks like duplicate logic from https://github.com/apache/trafficcontrol/blob/master/traffic_ops/traffic_ops_golang/cdn/capacity.go as well as https://github.com/apache/trafficcontrol/blob/master/traffic_ops/traffic_ops_golang/cachesstats/cachesstats.go#L202 should you go ahead and replace the other functions with this utility function?

Yes, they were copy-pasted, because the PRs were open at the same time, with the intention of combining them after one was merged to master. Good catch. I'll do that now.

Done. Also with GetCRConfig.

rob05c · 2019-09-16T15:30:52Z

also should we be adding tests?

This endpoint calls out to Traffic Monitor. The "API Test" framework doesn't currently support Monitors. It's also not really possible to unit test; we could mock everything, but it wouldn't be testing much of anything at that point (which is why we've been doing "API Tests" for TO).

We should definitely test this (and other Monitor endpoints) when the API Tests support it. But it'll be a nontrivial amount of work to add that support.

I just made #3924 - we had one for Riak, but not Monitors.

mitchell852 · 2019-09-18T18:53:51Z

@rob05c and @mhoppa - i believe this PR is going to have the same problem that was addressed in #3927 , right?

mhoppa · 2019-09-19T17:49:13Z

Yes it will have the same problem

there is a bug

mitchell852

@rob05c - i think this PR needs the changes that were made in #3927

rob05c · 2019-09-27T19:35:43Z

I'd like to look into #3927 first. Not sure when I'll have time.

It shouldn't be necessary, HTTP/2 is backwards-compatible by design. If a client tries to use H2, and a server doesn't support it, it automatically falls back to H1. If it doesn't, the Server is violating HTTP/1.1. So, it shouldn't ever be necessary to forcibly disable it. I'd like to at least understand why it's necessary.

asf-ci · 2019-12-11T16:52:44Z

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rob05c · 2019-12-11T17:10:32Z

Ok, I investigated, determined Go 1.13 http.Transport fundamentally doesn't support H2 Proxies. I added the code from #3927 and a comment to that effect. See golang/go#26479 "We only support http1 proxies currently."

Rebased; manually tested again, still works as expected, still matches Perl.

asf-ci · 2019-12-11T21:28:34Z

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asf-ci · 2019-12-11T21:57:06Z

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mhoppa

code looks good and tests locally good

mitchell852

appears to work as the Perl did.

rob05c added new feature A new feature, capability or behavior Traffic Ops API (golang) labels May 19, 2018

rob05c mentioned this pull request May 19, 2018

Rewrite Traffic Ops CRConfig Table Endpoints in Go #2232

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Add TO Go deliveryservices/id/health #2458

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Add TO Go deliveryservices/id/capacity #2459

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Fix using http2 between TO and TM when setting proxy #3927

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Add TO Go cdns/health, cdns/name/health

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Add TO Go cdns/health and cdns/{name}/health #2305

Add TO Go cdns/health and cdns/{name}/health #2305

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Add TO Go cdns/health and cdns/{name}/health #2305

Add TO Go cdns/health and cdns/{name}/health #2305

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