tailscale

Commit Graph

Author	SHA1	Message	Date
Anton Tolchanov	8546ff98fb	tsweb: move varz handler(s) into separate modules This splits Prometheus metric handlers exposed by tsweb into two modules: - `varz.Handler` exposes Prometheus metrics generated by our expvar converter; - `promvarz.Handler` combines our expvar-converted metrics and native Prometheus metrics. By default, tsweb will use the promvarz handler, however users can keep using only the expvar converter. Specifically, `tailscaled` now uses `varz.Handler` explicitly, which avoids a dependency on the (heavyweight) Prometheus client. Updates https://github.com/tailscale/corp/issues/10205 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	c153e6ae2f	prober: migrate to Prometheus metric library This provides an example of using native Prometheus metrics with tsweb. Prober library seems to be the only user of PrometheusVar, so I am removing support for it in tsweb. Updates https://github.com/tailscale/corp/issues/10205 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	11e6247d2a	tsweb: expose native Prometheus metrics in /debug/varz The handler will expose built-in process and Go metrics by default, which currently duplicate some of the expvar-proxied metrics (`goroutines` vs `go_goroutines`, `memstats` vs `go_memstats`), but as long as their names are different, Prometheus server will just scrape both. This will change /debug/varz behaviour for most tsweb binaries, but notably not for control, which configures a `tsweb.VarzHandler` [explicitly](`a5b5d5167f/cmd/tailcontrol/tailcontrol.go (L779)`) Updates https://github.com/tailscale/corp/issues/10205 Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Maisem Ali	1a30b2d73f	all: use tstest.Replace more Signed-off-by: Maisem Ali <maisem@tailscale.com>	2 years ago
David Anderson	8b2ae47c31	version: unexport all vars, turn Short/Long into funcs The other formerly exported values aren't used outside the package, so just unexport them. Signed-off-by: David Anderson <danderson@tailscale.com>	2 years ago
Brad Fitzpatrick	b1248442c3	all: update to Go 1.20, use strings.CutPrefix/Suffix instead of our fork Updates #7123 Updates #5309 Change-Id: I90bcd87a2fb85a91834a0dd4be6e03db08438672 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Will Norris	10085063fb	util/vizerror: add As function to get wrapped Error Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Will Norris	51e1ab5560	fixup! util/vizerror: add new package for visible errors Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Will Norris	648aa00a28	fixup! util/vizerror: add new package for visible errors Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Will Norris	598ec463bc	fixup! util/vizerror: add new package for visible errors Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Will Norris	71029cea2d	all: update copyright and license headers This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Anton Tolchanov	f053f16460	tsweb: export version metrics to Prometheus This will allow tracking build versions and runtime versions in Prometheus. Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Mihai Parparita	33520920c3	all: use strs.CutPrefix and strs.CutSuffix more Updates places where we use HasPrefix + TrimPrefix to use the combined function. Updates #5309 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Anton Tolchanov	f40bb199f5	tsweb: cache prometheus metric names & types Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Anton Tolchanov	3c27632ffe	tsweb: avoid dashes in Prometheus metric names Ideally we should strip other invalid characters too, but that would call for a regexp replacement which increases the number of allocations and makes `TestVarzHandlerSorting` fail. Signed-off-by: Anton Tolchanov <anton@tailscale.com>	2 years ago
Brad Fitzpatrick	614a24763b	tsweb: sort top-level expvars after removing type prefixes Fixes #5778 Change-Id: I56c367338fa5686da288cc6545209ef4d6b88549 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	718914b697	tsweb: remove allocs introduced by earlier change This removes the ~9 allocs added by #5869, while still keeping struct fields sorted (the previous commit's tests still pass). And add a test to lock it in that this shouldn't allocate. Updates #5778 Change-Id: I4c12b9e2a1334adc1ea5aba1777681cb9fc18fbf Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Hasnain Lakhani	8fe04b035c	tsweb: sort varz by name after stripping prefix (#5778 ) This makes it easier to view prometheus metrics. Added a test case which demonstrates the new behavior - the test initially failed as the output was ordered in the same order as the fields were declared in the struct (i.e. foo_a, bar_a, foo_b, bar_b). For that reason, I also had to change an existing test case to sort the fields in the new expected order. Signed-off-by: Hasnain Lakhani <m.hasnain.lakhani@gmail.com>	2 years ago
Will Norris	62bc1052a2	tsweb: allow HTTPError to unwrap errors Signed-off-by: Will Norris <will@tailscale.com>	2 years ago
Josh Soref	d4811f11a0	all: fix spelling mistakes Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>	2 years ago
Mihai Parparita	c66e15772f	tsweb: consider 304s as successful for quiet logging Static resource handlers will generate lots of 304s, which are effectively successful responses. Signed-off-by: Mihai Parparita <mihai@tailscale.com>	2 years ago
Brad Fitzpatrick	aa5e494aba	tsweb: export go_version in standard expvar vars For monitoring. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Eng Zer Jun	f0347e841f	refactor: move from io/ioutil to io and os packages The io/ioutil package has been deprecated as of Go 1.16 [1]. This commit replaces the existing io/ioutil functions with their new definitions in io and os packages. Reference: https://golang.org/doc/go1.16#ioutil Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>	2 years ago
Brad Fitzpatrick	116f55ff66	all: gofmt for Go 1.19 Updates #5210 Change-Id: Ib02cd5e43d0a8db60c1f09755a8ac7b140b670be Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Joe Tsai	57275a4912	tsweb: add HTTPError.Header (#5251 ) The Header field allows the server to specify specific headers to set. Example use case: server returns 429 with the "Retry-After" header set. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Joe Tsai	a794963e2f	tsweb: mark AccessLogRecord fields as omitempty (#5250 ) If the field is the zero value, then avoid serializing the field. This reduces verbosity in server logs. Signed-off-by: Joe Tsai <joetsai@digital-static.net>	2 years ago
Brad Fitzpatrick	6a396731eb	all: use various net/netip parse funcs directly Mechanical change with perl+goimports. Changed {Must,}Parse{IP,IPPrefix,IPPort} to their netip variants, then goimports -d . Finally, removed the net/netaddr wrappers, to prevent future use. Updates #5162 Change-Id: I59c0e38b5fbca5a935d701645789cddf3d7863ad Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Brad Fitzpatrick	7eaf5e509f	net/netaddr: start migrating to net/netip via new netaddr adapter package Updates #5162 Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
Denton Gentry	755396d6fe	tsweb: add Float expvar support in varz We make assertions about stringification of 0.5. IEEE floating point and all reasonable proprietary floating point can exactly represent 0.5. We don't make assertions about other floating point values, too brittle in tests. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	2 years ago
Tom DNetto	32c6823cf5	tsweb: implement interceptor for error page presentation Updates https://github.com/tailscale/corp/issues/5605 Signed-off-by: Tom DNetto <tom@tailscale.com>	2 years ago
Brad Fitzpatrick	0df3b76c25	tsweb: fix Port80Handler redirect to https with FQDN unset Fixes the current http://pkgs.tailscale.com/ redirect to https:/// as that server doesn't configure the Port80Handler.FQDN field. Change-Id: Iff56e6127a46c306ca97738d91b217bcab32a582 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 years ago
David Anderson	e1c1d47991	tsweb: memoize the string forms of HTTP response codes. Saves 1-2 allocs per HTTP request after warmup, thanks to avoiding strconv and fmt. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
David Anderson	c48513b2be	tsweb: support recording unabridged HTTP status codes as well. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Brad Fitzpatrick	2d1849a7b9	tsweb: remove JSONHandlerFunc It's unused and we've decided it's not what we want. Change-Id: I425a0104e8869630b498a0adfd0f455876d6f92b Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
David Anderson	7b4960316b	tsweb: add PrometheusVar, for vars that want to output varz themselves. This enables the infrequent use of more complex Prometheus types, such as timeseries with high/irregular label cardinality, without needing to discover and implement generic abstracted type like LabelMap for each one. Signed-off-by: David Anderson <danderson@tailscale.com>	3 years ago
Maisem Ali	309c0a13a5	tsweb: add FQDN to Port80Handler to allow HTTPS redirects When the request comes in say over http://mon, the current implementation would rewrite it https://mon which causes the cert validation to fail. This PR keeps the existing behavior intact but also allows passing in a FQDN to the handler to reroute to the correct hostname. Related to https://github.com/tailscale/tailscale/pull/4208#pullrequestreview-913832340 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
Josh Bleecher Snyder	0868329936	all: use any instead of interface{} My favorite part of generics. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	61ee72940c	all: use Go 1.18's strings.Cut More remain. Change-Id: I6ec562cc1f687600758deae1c9d7dbd0d04004cb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	24c9dbd129	tsweb: fix JSONHandlerFunc regression where HTTP status was lost on gzip Change-Id: Ia7add6cf7e8b46bb6dd45bd3c0371ea79402fb45 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	df8f02db3f	tsweb: add gzip support to JSONHandlerFunc Change-Id: I337e05f92f744bfc7e9d6fb8e67c87c191ba4da8 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	41fd4eab5c	envknob: add new package for all the strconv.ParseBool(os.Getenv(..)) A new package can also later record/report which knobs are checked and set. It also makes the code cleaner & easier to grep for env knobs. Change-Id: Id8a123ab7539f1fadbd27e0cbeac79c2e4f09751 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
nicksherron	f01ff18b6f	all: fix spelling mistakes Signed-off-by: nicksherron <nsherron90@gmail.com>	3 years ago
Brad Fitzpatrick	722942dd46	tsweb: restore CPU profiling handler It was accidentally deleted in the earlier `0022c3d2e` (#2143) refactor. Lock it in with a test. Fixes tailscale/corp#2503 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
slowy07	ac0353e982	fix: typo spelling grammar Signed-off-by: slowy07 <slowy.arfy@gmail.com>	3 years ago
Brad Fitzpatrick	51976ab3a2	tsweb: add vars for unix process start time and version To be scraped in the Go expvar JSON format, as a string is involved. For a future tool to record when processes restarted exactly, and at what version. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	c6740da624	tsweb: make VarzHandler support untyped expvar.Maps for compatibility Updates #2635 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	7c7eb8094b	tsweb: make VarzHandler support expvar.Funcs returning ints/floats Updates #2635	3 years ago
Brad Fitzpatrick	5aba620fb9	tsweb: make VarzHandler capable of walking structs with reflect To be used by control, per linked bug's plan. Updates #2635 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	3700cf9ea4	tsweb: also support LabelMaps from expvar.Map, without metrics We want to use tsweb to format Prometheus-style metrics from our temporary golang.org/x/net/http2 fork, but we don't want http2 to depend on the tailscale.com module to use the concrete type tailscale.com/metrics.LabelMap. Instead, let a expvar.Map be used instead of it's annotated sufficiently in its name. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	5f45d8f8e6	tsweb: add VarzHandler tests Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago

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92 Commits (c0c182f48718bc70a1a7ae441316dfe1988544bd)