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133 Commits

Author SHA1 Message Date
Josh Bleecher Snyder
3b46655dbb tsweb: add StatusCodeCounters to HandlerOptions 
This lets servers using tsweb register expvars
that will track the number of requests ending
in 200s/300s/400s/500s.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-10-30 11:07:57 -07:00
Josh Bleecher Snyder
e98f2c57d6 tsweb: add StdHandlerOpts that accepts an options struct 
I'm about to add yet another StdHandler option.
Time to refactor.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
 2020-10-30 11:07:57 -07:00
David Crawshaw
815bf017fc tsweb: when unwrapping HTTPError, record the user-facing message also in the log 
There's often some useful piece of information in there not already
repeated in the internal error.

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-09-17 10:12:48 -04:00
David Crawshaw
dea3ef0597 tsweb: make JSONHandlerFunc implement ReturnHandler, not http.Handler 
This way something is capable of logging errors on the server.

Fixes #766

Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
 2020-09-17 09:07:32 -04:00
halulu
1835bb6f85
tsweb: rewrite JSONHandler without using reflect (#684) 
Closes #656 #657

Signed-off-by: Zijie Lu <zijie@tailscale.com>
 2020-08-18 17:37:01 -04:00
Zijie Lu
c9e40abfb8 tsweb: jsonhandler: fix content type 
Signed-off-by: Zijie Lu <zijie@tailscale.com>
 2020-07-14 15:27:26 -04:00
Zijie Lu
d1a30be275 tsweb: JSONHandler: supports HTTPError 
Signed-off-by: Zijie Lu <zijie@tailscale.com>
 2020-06-09 17:40:45 -04:00
Zijie Lu
5e1ee4be53 tsweb: fix JSONHandler nil response 
Signed-off-by: Zijie Lu <zijie@tailscale.com>
 2020-06-08 15:48:38 -04:00
halulu
1d2e497d47
tsweb: JSONHandler using reflect (#437) 
Updates #395 #437

Signed-off-by: Zijie Lu <zijie@tailscale.com>
 2020-06-05 00:10:50 -04:00
David Anderson
0038223632 tstest: rename from testy. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-04-28 20:45:12 -07:00
David Anderson
eccae0cd0c tsweb: add ReturnHandlerFunc. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-04-22 15:34:28 -07:00
Brad Fitzpatrick
7bf436ba30 tsweb: add some Benchmarks 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-04-05 13:16:36 -07:00
Brad Fitzpatrick
64334143a1 tsweb: rename Handler to ReturnHandler 
The name's been bugging me for a long time.

I liked neither the overlap between tsweb.Handler and http.Handler,
nor the name "ServeHTTPErr" which sounds like it's an error being
returned, like it's an error handler and not sometimes a happy path.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-04-05 13:16:36 -07:00
David Anderson
b446de103a tsweb: fix tests. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-04-05 00:22:03 -07:00
David Anderson
af3a9dfad6 tsweb: add a StdHandler that doesn't log 200 responses. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-04-05 00:14:38 -07:00
Brad Fitzpatrick
2863e49db9 tsweb: don't flush, treat no-op Handler as 200, like Go 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-04-04 16:11:53 -07:00
David Anderson
5d995d9d6b tsweb: add a test case for nil child errors in tsweb.Error. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-04-03 10:37:39 -07:00
David Anderson
2c2dff9559 tsweb: don't panic if we get a tsweb.Error with no embedded error. 
It's technically weird to return a tsweb.Error with no child err,
but it's a sensible thing to want to do, and we shouldn't panic
if it happens.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-04-03 10:36:21 -07:00
David Anderson
12a6626a94 tsweb: use a ResponseWriter wrapper to log more accurately. 
Also adds tests, because the logging handler is acquiring a fair
number of branches.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-19 20:11:07 -07:00
Brad Fitzpatrick
6de37f4cc0 tsweb: move some comments, add a TODO 2020-03-18 09:54:48 -07:00
David Anderson
df4636567f tsweb: adjust names and docs of the "handler with errors" functions. 
Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-18 01:39:01 -07:00
David Anderson
98eceae55e tsweb: add a Handler type. 
Handler is like http.Handler, but returns errors. ErrHandler
converts back to an http.Handler, with added error handling
and logging.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-17 21:34:44 -07:00
Brad Fitzpatrick
c706731dc7 tsweb: add copyright header 
And fix an unlikely but potential crash.
 2020-03-17 20:08:13 -07:00
David Anderson
a567c56971 tsweb: pull in tlog data structures from corp repo. 
This is a prelude to having logging helpers in tsweb.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-17 17:21:50 -07:00
Brad Fitzpatrick
5c1e443d34 wgengine/monitor: don't call LinkChange when interfaces look unchanged 
Basically, don't trust the OS-level link monitor to only tell you
interesting things. Sanity check it.

Also, move the interfaces package into the net directory now that we
have it.
 2020-03-10 11:03:19 -07:00
Brad Fitzpatrick
a9cd8f31de tsweb: don't double import expvar; appease staticcheck 2020-03-06 13:08:32 -08:00
Brad Fitzpatrick
890f5dff40 tsweb: export runtime.MemStats var in Prometheus format 2020-03-06 13:02:01 -08:00
Brad Fitzpatrick
61f3fda405 tsweb: let expvar.Ints be gauges too 2020-03-05 15:10:01 -08:00
Brad Fitzpatrick
57de94c7aa tsweb: add /debug/ access via &debugkey + TS_DEBUG_KEY_PATH 2020-03-04 13:49:30 -08:00
David Anderson
d580157921 tsweb: quote label values to comply with Prometheus format. 2020-03-04 13:46:00 -08:00
David Anderson
f192c05413 metrics: add a LabelMap type for variables with 1 label dimension. 
This lets us publish sets of vars that are breakdowns along one
dimension in a format that Prometheus and Grafana natively know
how to do useful things with.

Signed-off-by: David Anderson <dave@natulte.net>
 2020-03-04 13:22:50 -08:00
Brad Fitzpatrick
e371520cc5 tsweb, derp: add expvar http.Handler for Prometheus's format 
And add some opinions.

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-03-03 13:59:16 -08:00
Brad Fitzpatrick
824f825552 tsweb, cmd/derper: move common web/debug stuff from derper to new tsweb 
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2020-02-25 10:06:56 -08:00