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add otelrestful restful.FilterFunction

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Signed-off-by: Sally O'Malley <somalley@redhat.com>
This commit is contained in:
Sally O'Malley
2022-07-18 17:16:23 -04:00
parent 7585aae1b4
commit 0d558c51b5
9 changed files with 573 additions and 7 deletions
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205
LICENSES/vendor/go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful/LICENSE generated vendored Normal file
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@@ -0,0 +1,205 @@
= vendor/go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful licensed under: =
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
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"Contribution" shall mean any work of authorship, including
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designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
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stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
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as part of the Derivative Works; within the Source form or
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within a display generated by the Derivative Works, if and
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of the NOTICE file are for informational purposes only and
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notices within Derivative Works that You distribute, alongside
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You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
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5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
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this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
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agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
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the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
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same "printed page" as the copyright notice for easier
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Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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See the License for the specific language governing permissions and
limitations under the License.
= vendor/go.opentelemetry.io/contrib/LICENSE 86d3f3a95c324c9479bd8986968f4327

3
go.mod
View File

@@ -74,6 +74,7 @@ require (
go.etcd.io/etcd/api/v3 v3.5.4
go.etcd.io/etcd/client/pkg/v3 v3.5.4
go.etcd.io/etcd/client/v3 v3.5.4
go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0
go.opentelemetry.io/otel v0.20.0
go.opentelemetry.io/otel/exporters/otlp v0.20.0
@@ -514,8 +515,10 @@ replace (
go.etcd.io/etcd/server/v3 => go.etcd.io/etcd/server/v3 v3.5.4
go.opencensus.io => go.opencensus.io v0.23.0
go.opentelemetry.io/contrib => go.opentelemetry.io/contrib v0.20.0
go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful => go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc => go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp => go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.20.0
go.opentelemetry.io/contrib/propagators => go.opentelemetry.io/contrib/propagators v0.20.0
go.opentelemetry.io/otel => go.opentelemetry.io/otel v0.20.0
go.opentelemetry.io/otel/exporters/otlp => go.opentelemetry.io/otel/exporters/otlp v0.20.0
go.opentelemetry.io/otel/metric => go.opentelemetry.io/otel/metric v0.20.0

4
go.sum
View File

@@ -442,10 +442,14 @@ go.opencensus.io v0.23.0 h1:gqCw0LfLxScz8irSi8exQc7fyQ0fKQU/qnC/X8+V/1M=
go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
go.opentelemetry.io/contrib v0.20.0 h1:ubFQUn0VCZ0gPwIoJfBJVpeBlyRMxu8Mm/huKWYd9p0=
go.opentelemetry.io/contrib v0.20.0/go.mod h1:G/EtFaa6qaN7+LxqfIAT3GiZa7Wv5DTBUzl5H4LY0Kc=
go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0 h1:8YW+SL62UmcwRQJFZVfnyOlIUUtmlR13NaMKi+Fa6Fo=
go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0/go.mod h1:oQkZOyq61qZBItEFqhfpobK6X/oDPR7/Qr+MXjVSTks=
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0 h1:sO4WKdPAudZGKPcpZT4MJn6JaDmpyLrMPDGGyA1SttE=
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0/go.mod h1:oVGt1LRbBOBq1A5BQLlUg9UaU/54aiHw8cgjV3aWZ/E=
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.20.0 h1:Q3C9yzW6I9jqEc8sawxzxZmY48fs9u220KXq6d5s3XU=
go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.20.0/go.mod h1:2AboqHi0CiIZU0qwhtUfCYD1GeUzvvIXWNkhDt7ZMG4=
go.opentelemetry.io/contrib/propagators v0.20.0 h1:IrLQng5Z7AfzkS4sEsYaj2ejkO4FCkgKdAr1aYKOfNc=
go.opentelemetry.io/contrib/propagators v0.20.0/go.mod h1:yLmt93MeSiARUwrK57bOZ4FBruRN4taLiW1lcGfnOes=
go.opentelemetry.io/otel v0.20.0 h1:eaP0Fqu7SXHwvjiqDq83zImeehOHX8doTvU9AwXON8g=
go.opentelemetry.io/otel v0.20.0/go.mod h1:Y3ugLH2oa81t5QO+Lty+zXf8zC9L26ax4Nzoxm/dooo=
go.opentelemetry.io/otel/exporters/otlp v0.20.0 h1:PTNgq9MRmQqqJY0REVbZFvwkYOA85vbdQU/nVfxDyqg=

17
pkg/kubelet/server/server.go
View File

@@ -37,6 +37,7 @@ import (
cadvisorapi "github.com/google/cadvisor/info/v1"
cadvisorv2 "github.com/google/cadvisor/info/v2"
"github.com/google/cadvisor/metrics"
"go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful"
oteltrace "go.opentelemetry.io/otel/trace"
"google.golang.org/grpc"
"k8s.io/klog/v2"
@@ -63,7 +64,6 @@ import (
"k8s.io/component-base/logs"
compbasemetrics "k8s.io/component-base/metrics"
"k8s.io/component-base/metrics/legacyregistry"
tracing "k8s.io/component-base/tracing"
runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
podresourcesapi "k8s.io/kubelet/pkg/apis/podresources/v1"
podresourcesapiv1alpha1 "k8s.io/kubelet/pkg/apis/podresources/v1alpha1"
@@ -129,15 +129,11 @@ type containerInterface interface {
// so we can ensure restful.FilterFunctions are used for all handlers
type filteringContainer struct {
*restful.Container
oteltrace.TracerProvider
registeredHandlePaths []string
}
func (a *filteringContainer) Handle(path string, handler http.Handler) {
if utilfeature.DefaultFeatureGate.Enabled(features.KubeletTracing) {
handler = tracing.WithTracing(handler, a.TracerProvider, "kubelet")
}
a.HandleWithFilter(path, handler)
a.registeredHandlePaths = append(a.registeredHandlePaths, path)
}
@@ -257,19 +253,21 @@ func NewServer(
auth AuthInterface,
tp oteltrace.TracerProvider,
kubeCfg *kubeletconfiginternal.KubeletConfiguration) Server {
rc := &filteringContainer{Container: restful.NewContainer(), TracerProvider: tp}
server := Server{
host: host,
resourceAnalyzer: resourceAnalyzer,
auth: auth,
restfulCont: rc,
restfulCont: &filteringContainer{Container: restful.NewContainer()},
metricsBuckets: sets.NewString(),
metricsMethodBuckets: sets.NewString("OPTIONS", "GET", "HEAD", "POST", "PUT", "DELETE", "TRACE", "CONNECT"),
}
if auth != nil {
server.InstallAuthFilter()
}
if utilfeature.DefaultFeatureGate.Enabled(features.KubeletTracing) {
server.InstallTracingFilter(tp)
}
server.InstallDefaultHandlers()
if kubeCfg != nil && kubeCfg.EnableDebuggingHandlers {
server.InstallDebuggingHandlers()
@@ -322,6 +320,11 @@ func (s *Server) InstallAuthFilter() {
})
}
// InstallTracingFilter installs OpenTelemetry tracing filter with the restful Container.
func (s *Server) InstallTracingFilter(tp oteltrace.TracerProvider) {
s.restfulCont.Filter(otelrestful.OTelFilter("kubelet", otelrestful.WithTracerProvider(tp)))
}
// addMetricsBucketMatcher adds a regexp matcher and the relevant bucket to use when
// it matches. Please be aware this is not thread safe and should not be used dynamically
func (s *Server) addMetricsBucketMatcher(bucket string) {

201
vendor/go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful/LICENSE generated vendored Normal file
View File

@@ -0,0 +1,201 @@
Apache License
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http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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control with that entity. For the purposes of this definition,
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direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
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including but not limited to software source code, documentation
source, and configuration files.
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of this License, Derivative Works shall not include works that remain
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the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
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of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
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8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
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APPENDIX: How to apply the Apache License to your work.
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46
vendor/go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful/config.go generated vendored Normal file
View File

@@ -0,0 +1,46 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelrestful
import (
"go.opentelemetry.io/otel/propagation"
oteltrace "go.opentelemetry.io/otel/trace"
)
// config is used to configure the go-restful middleware.
type config struct {
TracerProvider oteltrace.TracerProvider
Propagators propagation.TextMapPropagator
}
// Option specifies instrumentation configuration options.
type Option func(*config)
// WithPropagators specifies propagators to use for extracting
// information from the HTTP requests. If none are specified, global
// ones will be used.
func WithPropagators(propagators propagation.TextMapPropagator) Option {
return func(cfg *config) {
cfg.Propagators = propagators
}
}
// WithTracerProvider specifies a tracer provider to use for creating a tracer.
// If none is specified, the global provider is used.
func WithTracerProvider(provider oteltrace.TracerProvider) Option {
return func(cfg *config) {
cfg.TracerProvider = provider
}
}

25
vendor/go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful/doc.go generated vendored Normal file
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@@ -0,0 +1,25 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package otelrestful instruments github.com/emicklei/go-restful.
//
// Instrumentation is provided to trace the emicklei/go-restful/v3
// package (https://github.com/emicklei/go-restful).
//
// Instrumentation of an incoming request is achieved via a go-restful
// FilterFunc called `OTelFilterFunc` which may be applied at any one of
// * the container level
// * webservice level
// * route level
package otelrestful // import "go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful"

74
vendor/go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful/restful.go generated vendored Normal file
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@@ -0,0 +1,74 @@
// Copyright The OpenTelemetry Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package otelrestful
import (
"github.com/emicklei/go-restful/v3"
"go.opentelemetry.io/contrib"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/semconv"
oteltrace "go.opentelemetry.io/otel/trace"
)
const tracerName = "go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful"
// OTelFilter returns a restful.FilterFunction which will trace an incoming request.
//
// The service parameter should describe the name of the (virtual) server handling
// the request. Options can be applied to configure the tracer and propagators
// used for this filter.
func OTelFilter(service string, opts ...Option) restful.FilterFunction {
cfg := config{}
for _, opt := range opts {
opt(&cfg)
}
if cfg.TracerProvider == nil {
cfg.TracerProvider = otel.GetTracerProvider()
}
tracer := cfg.TracerProvider.Tracer(
tracerName,
oteltrace.WithInstrumentationVersion(contrib.SemVersion()),
)
if cfg.Propagators == nil {
cfg.Propagators = otel.GetTextMapPropagator()
}
return func(req *restful.Request, resp *restful.Response, chain *restful.FilterChain) {
r := req.Request
ctx := cfg.Propagators.Extract(r.Context(), propagation.HeaderCarrier(r.Header))
route := req.SelectedRoutePath()
spanName := route
opts := []oteltrace.SpanOption{
oteltrace.WithAttributes(semconv.NetAttributesFromHTTPRequest("tcp", r)...),
oteltrace.WithAttributes(semconv.EndUserAttributesFromHTTPRequest(r)...),
oteltrace.WithAttributes(semconv.HTTPServerAttributesFromHTTPRequest(service, route, r)...),
oteltrace.WithSpanKind(oteltrace.SpanKindServer),
}
ctx, span := tracer.Start(ctx, spanName, opts...)
defer span.End()
// pass the span through the request context
req.Request = req.Request.WithContext(ctx)
chain.ProcessFilter(req, resp)
attrs := semconv.HTTPAttributesFromHTTPStatusCode(resp.StatusCode())
spanStatus, spanMessage := semconv.SpanStatusFromHTTPStatusCode(resp.StatusCode())
span.SetAttributes(attrs...)
span.SetStatus(spanStatus, spanMessage)
}
}

5
vendor/modules.txt vendored
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@@ -957,6 +957,9 @@ go.opencensus.io/trace/tracestate
# go.opentelemetry.io/contrib v0.20.0 => go.opentelemetry.io/contrib v0.20.0
## explicit; go 1.14
go.opentelemetry.io/contrib
# go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0 => go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0
## explicit; go 1.14
go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful
# go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0 => go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0
## explicit; go 1.14
go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc
@@ -2804,8 +2807,10 @@ sigs.k8s.io/yaml
# go.etcd.io/etcd/server/v3 => go.etcd.io/etcd/server/v3 v3.5.4
# go.opencensus.io => go.opencensus.io v0.23.0
# go.opentelemetry.io/contrib => go.opentelemetry.io/contrib v0.20.0
# go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful => go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful v0.20.0
# go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc => go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.20.0
# go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp => go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.20.0
# go.opentelemetry.io/contrib/propagators => go.opentelemetry.io/contrib/propagators v0.20.0
# go.opentelemetry.io/otel => go.opentelemetry.io/otel v0.20.0
# go.opentelemetry.io/otel/exporters/otlp => go.opentelemetry.io/otel/exporters/otlp v0.20.0
# go.opentelemetry.io/otel/metric => go.opentelemetry.io/otel/metric v0.20.0