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351 Commits

Author SHA1 Message Date
beorn7 8c67c139e2 Remove accidental gogo/protobuf import 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-11-16 13:23:08 +01:00
beorn7 c4c1f3461e Fix tiny punctuation issue in doc comment 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-11-15 18:40:33 +01:00
PhilipGough f9739b3d97
Compare text strings directly in testutil 
Signed-off-by: PhilipGough <philip.p.gough@gmail.com>
 2018-11-15 16:03:57 +00:00
PhilipGough 30503fe98e
Exposes bug #498 - unexpected results for Histograms in testutil 
Signed-off-by: PhilipGough <philip.p.gough@gmail.com>
 2018-11-14 11:58:43 +00:00
beorn7 86702ea6b4 Fix metric comparison for empty labels 
reflect.DeepEqual is not suitable for zero occurrences of repeated
proto messages. This changes the comparison to act on the string
representation of proto messages.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-11-13 16:25:02 +01:00
beorn7 1db43792db Expose bug #494 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-11-13 15:48:48 +01:00
Björn Rabenstein da11cf2c83
Merge pull request #488 from peterj/master 
Add more info to the inconsistent cardinality errors
 2018-11-02 19:52:54 +01:00
Sevag Hanssian 88f4223778
Fix permissions of tempfile 
Signed-off-by: Sevag Hanssian <sevag.hanssian@gmail.com>
 2018-11-02 09:59:03 -07:00
Peter Jausovec f1bec54758 Update the ExampleRegister test 
Signed-off-by: Peter Jausovec <peter.jausovec@oracle.com>
 2018-11-02 09:46:03 -07:00
Sevag Hanssian 924d5919f3
Improve WriteToTextfile doc 
Signed-off-by: Sevag Hanssian <sevag.hanssian@gmail.com>
 2018-11-02 09:31:41 -07:00
Peter Jausovec b686a9e02e Remove fmt from import 
Signed-off-by: Peter Jausovec <peter.jausovec@oracle.com>
 2018-11-02 09:21:12 -07:00
Peter Jausovec ea348d7c20 Update code based on the PR feedback 
Signed-off-by: Peter Jausovec <peter.jausovec@oracle.com>
 2018-11-02 09:01:14 -07:00
Sevag Hanssian 42e6616334
Use code that already existed 
Signed-off-by: Sevag Hanssian <sevag.hanssian@gmail.com>
 2018-11-02 08:37:26 -07:00
Sevag Hanssian 1d54dabd43
Add WriteToTextfile test 
Signed-off-by: Sevag Hanssian <sevag.hanssian@gmail.com>
 2018-10-31 23:34:50 -07:00
Sevag Hanssian c5bdd15ac3
Remove typo 
Signed-off-by: Sevag Hanssian <sevag.hanssian@gmail.com>
 2018-10-31 15:31:42 -07:00
Sevag Hanssian e6fe89ce22
Add support for histograms and summaries 
Signed-off-by: Sevag Hanssian <sevag.hanssian@gmail.com>
 2018-10-31 15:27:11 -07:00
Sevag Hanssian 9416ff209b
First commit - WriteToTextfile 
Signed-off-by: Sevag Hanssian <sevag.hanssian@gmail.com>
 2018-10-31 14:22:11 -07:00
Peter Jausovec ceb819208d copy/pasta error 
Signed-off-by: Peter Jausovec <peter.jausovec@oracle.com>
 2018-10-31 11:16:16 -07:00
Peter Jausovec 4fe949f2fd Add missing fmt import 
Signed-off-by: Peter Jausovec <peter.jausovec@oracle.com>
 2018-10-31 11:09:12 -07:00
Peter Jausovec 902733d080 Add more info to the inconsistent cardinality errors 
Signed-off-by: Peter Jausovec <peter.jausovec@oracle.com>
 2018-10-31 11:01:42 -07:00
beorn7 fb0f7fe8c2 Pull up HTTP changes into deprecated functions 
So that also users of those can benefit. Obviously, we will end
updating deprecated functions one day (at latest once v0.10 is out).

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-10-22 12:36:33 +02:00
beorn7 62361fc0fb Use streaming encoding of metrics 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-10-22 01:04:52 +02:00
beorn7 752f50d366 Merge branch 'use-gzip-pool' of github.com:glefloch/client_golang into beorn7/http 2018-10-20 00:51:31 +02:00
glefloch c2c6fd2ab4 Fix PR comments 
Signed-off-by: glefloch <glfloch@gmail.com>
 2018-10-19 13:51:45 +02:00
glefloch fdf4cbc87b Use sync.Pool for gzipWriter 
Signed-off-by: glefloch <glfloch@gmail.com>
 2018-10-17 13:17:33 +02:00
beorn7 5e8ac3cd58 Add a concurrent end-to-end test for observe-register-gather 
This is an attempt to expose
https://github.com/istio/istio/issues/8906 .  The failure to do so
makes me believe the error is either already fixed in current
client_golang, or something weird I haven't spotted yet is happening
in the istio code.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-10-10 16:59:24 +02:00
beorn7 e1fb14a776 Adjust TestRegisterWithOrGet to the present 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-10-10 15:41:21 +02:00
beorn7 edb489a1ef Add check for duplicated label names 
Fixes #471

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-30 16:25:48 +02:00
beorn7 dd9e125455 Expose failure to detect duplicate label names 
This is #471.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-30 16:25:48 +02:00
beorn7 ff0177896a Be more precise about concurrency requirements 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-29 10:47:28 +02:00
beorn7 7eb5e8a08a Drain the desc channel after registering 
This avoids leaking goroutines.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-29 10:44:19 +02:00
David E Worth c2c648fdcb
fix exponential buckets failure message 
it appears there is a copy/paste error in the exponential buckets test failure message which is fixed here.

Signed-off-by: David Worth <dworth@strava.com>
 2018-09-25 17:42:06 -06:00
beorn7 7973e4709d Ensure 64bit alignment on 32bit platforms for histograms 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-24 13:28:13 +02:00
beorn7 3a6edf5ff8 Handle items newly deprecated in Go 1.11 
Remove where possible and ignore staticcheck warnings where we have
to.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-19 13:30:14 +02:00
beorn7 663a9ad019 Make Help strings optional 
This is in line with
https://prometheus.io/docs/instrumenting/writing_clientlibs/#metric-description-and-help

Since the zero value of a string in Go is `""`, we cannot distinguish
between a Help string not set and an empty Help string. Thus, we just
make it formally optional here with an encouragement to set it in the
doc comment.

In v0.10, the Help string will probably become a "normal" argument of
the constructor rather than a field in an Opts struct.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-17 12:07:31 +02:00
beorn7 713e6eb604 Let NewConst... functions detect invalid Desc 
The error of the invalid Desc is returned in that case.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-17 11:50:42 +02:00
beorn7 b7b390014b Reformat doc comment of InstrumentHandler 
To help linters detect the Deprecated message.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-14 13:24:05 +02:00
beorn7 cec67c9ec8 Improve deprecated doc comment 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-14 12:48:16 +02:00
Björn Rabenstein 1362cad3aa
Merge pull request #458 from prometheus/beorn7/registry 
Wrappable registerers
 2018-09-14 12:15:22 +02:00
beorn7 fe28f32433 Discourage prefixing every metris with WrapRegistererWithPrefix 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-14 11:59:13 +02:00
beorn7 cf9b2a8c78 Rename WrapWith... to WrapRegistererWith... 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-13 17:43:05 +02:00
beorn7 837c7cb1f4 Update Collector example 
It now uses the new WrapWith function instead of ConstLabels. Describe
is now implemented via DescribeByCollect.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-12 15:34:13 +02:00
beorn7 84d7aa0cd9 Add wrapping of Registerers with labels and prefix 
Essentially middleware for Registerers!

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-12 15:34:07 +02:00
beorn7 1b2bd1d665 Make Histogram observations atomic while keeping them lock-free 
Fixes #275

This is rather tricky and required some studying of the Go memory
model. I have added copious code comments to explain what's going on.

Benchmarks haven't changed significantly, despite the additional
atomic operations now required during Observe. Write performance is
noticable, but it is also much more involved now and has a mutex. (But
note that Write is supposed to be a relatively rare operation and thus
not in the hot path compared to Observe.) Allocs haven't changed at
all.

OLD:

BenchmarkHistogramWithLabelValues-4     10000000               151 ns/op               0 B/op          0 allocs/op
BenchmarkHistogramNoLabels-4            50000000                36.0 ns/op             0 B/op          0 allocs/op
BenchmarkHistogramObserve1-4            50000000                28.1 ns/op             0 B/op          0 allocs/op
BenchmarkHistogramObserve2-4            10000000               160 ns/op               0 B/op          0 allocs/op
BenchmarkHistogramObserve4-4             5000000               378 ns/op               0 B/op          0 allocs/op
BenchmarkHistogramObserve8-4             2000000               768 ns/op               0 B/op          0 allocs/op
BenchmarkHistogramWrite1-4               1000000              1589 ns/op             896 B/op         37 allocs/op
BenchmarkHistogramWrite2-4                500000              2973 ns/op            1792 B/op         74 allocs/op
BenchmarkHistogramWrite4-4                300000              6979 ns/op            3584 B/op        148 allocs/op
BenchmarkHistogramWrite8-4                100000             10701 ns/op            7168 B/op        296 allocs/op

NEW:

BenchmarkHistogramWithLabelValues-4     10000000               191 ns/op               0 B/op          0 allocs/op
BenchmarkHistogramNoLabels-4            30000000                50.1 ns/op             0 B/op          0 allocs/op
BenchmarkHistogramObserve1-4            30000000                40.0 ns/op             0 B/op          0 allocs/op
BenchmarkHistogramObserve2-4            20000000                91.5 ns/op             0 B/op          0 allocs/op
BenchmarkHistogramObserve4-4             5000000               317 ns/op               0 B/op          0 allocs/op
BenchmarkHistogramObserve8-4             2000000               636 ns/op               0 B/op          0 allocs/op
BenchmarkHistogramWrite1-4               1000000              2072 ns/op             896 B/op         37 allocs/op
BenchmarkHistogramWrite2-4                300000              3729 ns/op            1792 B/op         74 allocs/op
BenchmarkHistogramWrite4-4                200000              7847 ns/op            3584 B/op        148 allocs/op
BenchmarkHistogramWrite8-4                100000             16975 ns/op            7168 B/op        296 allocs/op

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-12 15:03:44 +02:00
beorn7 1e08f788cf Add test to expose #275 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-07 19:04:00 +02:00
beorn7 773f502723 Rework process collector 
This unifies both constructors in one with an options argument.

The options argument allows to switch on error reporting, as discussed
in #219.

The change of the contructor signature is breaking, but only mildly
so. Plus, the process collector is rarely used explicitly. I used
Sourcegraph to search for public usages, with the following results:

- 2 occurrences of NewProcessCollectorPIDFn, once in @discordianfish's
  glimpse, once in @fabxc's etcd_exporter (deprecated anyway). Both
  are Prom veterans and will simply do the one line change if needed.
- 8 occurrences of NewProcessCollector, of which 7 are of the form
    NewProcessCollector(os.Getpid(), "")
  Thus, it's a very easy change, which I even hinted at in the doc
  comment.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-07 12:09:26 +02:00
beorn7 6803bb4021 Add a DescribeByCollect helper 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-05 14:10:51 +02:00
beorn7 74a2f46d2c Add package documentation 
Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-04 14:02:20 +02:00
beorn7 1301cf8fcd Add helper function to extract a simple float value from a metric 
Signed-off-by: beorn7 <beorn@soundcloud.com>

foo
 2018-09-04 14:02:19 +02:00
beorn7 da330f4281 Un-export prometheus.LabelPairSorter 
The only known external usage of it was in prometheus/pushgateway,
where it was removed by
https://github.com/prometheus/pushgateway/pull/200 .

Originally, the expectation was that users would implement the Metric
interface now and then. As we know now, neither it is happening, nor
would it make a lot of sense. (Users implement the Collector interface
instead.) By now, LabelPairSorter is essentially noise in the already
quite cluttered namespace in the prometheus package.

Signed-off-by: beorn7 <beorn@soundcloud.com>
 2018-09-03 16:20:55 +02:00