For one, this pulls up the histogram-related json-iterator usage from
prometheus/common into the API client. Previously, the only
json-iterater usage was here in the API client. But then json-iterator
was used for the native histogram additions directly in
prometheus/common, see
https://github.com/prometheus/common/pull/440/files . This however
meant that any user of prometheus/common/model would now link in
json-iterator, even if they are not using the JSON marshaling at
all. To keep prometheus/common/model more leightweight, this commit
moves all the json-iterator usage into the API client itself, as it
was done before for the normal float samples.
This commit also adds an unmarshaling function for native histograms,
which didn't even exist in prometheus/common/model so far.
It also adds json-iterator marshaling and un-marshaling for
model.SampleStream, which is only needed for the benchmark
(BenchmarkSamplesJsonSerialization). This fixes the benchmark such
that it actually compares json-iterator and std-lib json encoding
(which didn't work before because the custom marshaling methods of
model.SampleStream enforced std-lib json encoding for floats and
json-iterator encoding for histograms in all cases).
I expect this to fix#1179.
Signed-off-by: beorn7 <beorn@grafana.com>
This replaces usage of proto.{Float64,Int32,Int64,String,Uint32,Uint64},
which doesn't break the interface.
And remove usage of proto.MarshalTextString in wrap_test.go
Updates: #1175
Signed-off-by: Shengjing Zhu <zhsj@debian.org>
Signed-off-by: Shengjing Zhu <zhsj@debian.org>
* Introduce MetricVecOpts and add constraints to VariableLabels
MetricVecOpts exposes options specific to MetricVec initialisation. The
first option exposed by MetricVecOpts are constraints on VariableLabels,
allowing restrictions on the possible values a label can take, to
prevent cardinality explosion when the label value comes from a
non-trusted source (as a user input or HTTP header).
Signed-off-by: Quentin Devos <4972091+Okhoshi@users.noreply.github.com>
* Add tests
Signed-off-by: Quentin Devos <4972091+Okhoshi@users.noreply.github.com>
Signed-off-by: Quentin Devos <4972091+Okhoshi@users.noreply.github.com>
* Add new Go 1.19 metrics
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
* Format files with the latest formatter
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
Signed-off-by: Kemal Akkoyun <kakkoyun@gmail.com>
* Fix float64 comparison test failure on archs using FMA
Architectures using FMA optimization yield slightly different results so
we cannot assume floating point values will be precisely the same across
different architectures.
The solution in this change is to check "abs(a-b) < tolerance" instead
of comparing the exact values. This will give us confidence that the
histogram buckets are near identical.
Signed-off-by: Seth Bunce <seth.bunce@getcruise.com>
* Apply suggestions from code review
Co-authored-by: Daniel Swarbrick <daniel.swarbrick@gmail.com>
Signed-off-by: Seth Bunce <seth.bunce@getcruise.com>
* copy float compare dependency
Per discussion in the pull request, we'd like to avoid having an extra
dependency on a float comparison package. Instead, we copy the float compare
functions from the float comparison package.
The float comparison package we're choosing is this. The author of this
package has commented in the pull request and it looks like we have consensus
that this is the best option.
github.com/beorn7/floats
Signed-off-by: Seth Bunce <seth.bunce@gmail.com>
* remove float32 variant, relocate into separate file
This change removes the float32 variant of the AlmostEqual funcs, that we will
likely never use. This change also relocates the function into a separate file
to avoid modifying a file that's a fork of another vendored package.
Signed-off-by: Seth Bunce <seth.bunce@gmail.com>
Signed-off-by: Seth Bunce <seth.bunce@getcruise.com>
Signed-off-by: Seth Bunce <seth.bunce@gmail.com>
Co-authored-by: Daniel Swarbrick <daniel.swarbrick@gmail.com>
This intends to avoid confusing users by the subtle difference between
a native histogram and a sparse bucket.
Signed-off-by: beorn7 <beorn@grafana.com>
beorn7