Commit Graph

38 Commits

Author SHA1 Message Date
Josh Bleecher Snyder 516e8a4838 tsweb: add num_goroutines expvar
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-01 14:38:59 -08:00
David Anderson 692a011b54 net/interfaces: remove IsTailscaleIP, make callers use tsaddr.
Signed-off-by: David Anderson <danderson@tailscale.com>
2021-01-26 15:10:51 -08:00
Brad Fitzpatrick 017dcd520f tsweb: export VarzHandler 2021-01-14 11:49:44 -08:00
David Anderson 57cd7738c2 tsweb: add an endpoint to manually trigger a GC.
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-12-08 16:49:42 -08:00
chungdaniel e7ac9a4b90
tsweb: refactor JSONHandler to take status code from error if it is present (#905)
This change is to make JSONHandler error handling intuitive, as before there would be two sources of HTTP status code when HTTPErrors were generated: one as the first return value of the handler function, and one nested inside the HTTPError. Previously, it took the first return value as the status code, and ignored the code inside the HTTPError. Now, it should expect the first return value to be 0 if there is an error, and it takes the status code of the HTTPError to set as the response code.

Signed-off-by: Daniel Chung <daniel@tailscale.com>
2020-11-10 09:52:26 -05:00
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