Commit Graph

14 Commits (c3306bfd15e761e0ad38e3e3970becd0d301e4c7)

Author SHA1 Message Date
Kristoffer Dalby 40c991f6b8 wgengine: instrument with usermetrics
Updates tailscale/corp#22075

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
1 month ago
Mihai Parparita f49b9f75b8 util/clientmetric: allow client metric values to be provided by a function
Adds NewGaugeFunc and NewCounterFunc (inspired by expvar.Func) which
change the current value to be reported by a function. This allows
some client metric values to be computed on-demand during uploading (at
most every 15 seconds), instead of being continuously updated.

clientmetric uploading had a bunch of micro-optimizations for memory
access (#3331) which are not possible with this approach. However, any
performance hit from function-based metrics is contained to those metrics
only, and we expect to have very few.

Also adds a DisableDeltas() option for client metrics, so that absolute
values are always reported. This makes server-side processing of some
metrics easier to reason about.

Updates tailscale/corp#9230

Signed-off-by: Mihai Parparita <mihai@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
Josh Soref d4811f11a0 all: fix spelling mistakes
Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.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
Mihai Parparita e37167b3ef ipn/localapi: add API for uploading client metrics
Clients may have platform-specific metrics they would like uploaded
(e.g. extracted from MetricKit on iOS). Add a new local API endpoint
that allows metrics to be updated by a simple name/value JSON-encoded
struct.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2 years ago
Mihai Parparita dd5548771e util/clientmetric: add gauge_ name prefix when uploading names
The prefix is a signal to tsweb to treat this as a gauge metric when
generating the Prometheus version.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
3 years ago
Mihai Parparita 025867fd07
util/clientmetric: switch to TestHooks struct for test-only functions (#4632)
Followup to 7966aed1e0 to pick up
review feedback that was accidentally left out.

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
3 years ago
Mihai Parparita 7966aed1e0
util/clientmetric: add test hooks and ResetLastDelta function
Necessary to force flushing of client metrics more aggressively in
dev/test mode.

Signed-off-by: Mihai Parparita <mihai@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 0de1b74fbb util/clientmetric: add tests omitted from earlier commit
These were supposed to be part of
3b541c833e but I guess I forgot to "git
add" them. Whoops.

Updates #3307

Change-Id: I8c768a61ec7102a01799e81dc502a22399b9e9f0
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 5b5f032c9a util/clientmetric: optimize memory layout for finding updates
Updates #3307

Change-Id: I2840b190583467cc3f00688b96ce3d170df46a46
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 3b541c833e util/clientmetric, logtail: log metric changes
Updates #3307

Change-Id: I1399ebd786f6ff7defe6e11c0eb651144c071574
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
Brad Fitzpatrick 57b039c51d util/clientmetrics: add new package to add metrics to the client
And annotate magicsock as a start.

And add localapi and debug handlers with the Prometheus-format
exporter.

Updates #3307

Change-Id: I47c5d535fe54424741df143d052760387248f8d3
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago