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magicsong
2019-08-14 20:45:43 +08:00
parent 90fa38851f
commit 7314064e83
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vendor/contrib.go.opencensus.io/exporter/ocagent/.travis.yml generated vendored Normal file
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language: go
go:
- 1.11.x
go_import_path: contrib.go.opencensus.io/exporter/ocagent
before_script:
- GO_FILES=$(find . -iname '*.go' | grep -v /vendor/) # All the .go files, excluding vendor/ if any
- PKGS=$(go list ./... | grep -v /vendor/) # All the import paths, excluding vendor/ if any
script:
- go build ./... # Ensure dependency updates don't break build
- if [ -n "$(gofmt -s -l $GO_FILES)" ]; then echo "gofmt the following files:"; gofmt -s -l $GO_FILES; exit 1; fi
- go vet ./...
- GO111MODULE=on go test -v -race $PKGS # Run all the tests with the race detector enabled
- GO111MODULE=off go test -v -race $PKGS # Make sure tests still pass when not using Go modules.
- 'if [[ $TRAVIS_GO_VERSION = 1.8* ]]; then ! golint ./... | grep -vE "(_mock|_string|\.pb)\.go:"; fi'

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vendor/contrib.go.opencensus.io/exporter/ocagent/CONTRIBUTING.md generated vendored Normal file
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# How to contribute
We'd love to accept your patches and contributions to this project. There are
just a few small guidelines you need to follow.
## Contributor License Agreement
Contributions to this project must be accompanied by a Contributor License
Agreement. You (or your employer) retain the copyright to your contribution,
this simply gives us permission to use and redistribute your contributions as
part of the project. Head over to <https://cla.developers.google.com/> to see
your current agreements on file or to sign a new one.
You generally only need to submit a CLA once, so if you've already submitted one
(even if it was for a different project), you probably don't need to do it
again.
## Code reviews
All submissions, including submissions by project members, require review. We
use GitHub pull requests for this purpose. Consult [GitHub Help] for more
information on using pull requests.
[GitHub Help]: https://help.github.com/articles/about-pull-requests/

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vendor/contrib.go.opencensus.io/exporter/ocagent/LICENSE generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
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5. Submission of Contributions. Unless You explicitly state otherwise,
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Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
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6. Trademarks. This License does not grant permission to use the trade
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
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defend, and hold each Contributor harmless for any liability
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of your accepting any such warranty or additional liability.
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APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
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you may not use this file except in compliance with the License.
You may obtain a copy of the License at
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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.

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vendor/contrib.go.opencensus.io/exporter/ocagent/README.md generated vendored Normal file
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# OpenCensus Agent Go Exporter
[![Build Status][travis-image]][travis-url] [![GoDoc][godoc-image]][godoc-url]
This repository contains the Go implementation of the OpenCensus Agent (OC-Agent) Exporter.
OC-Agent is a deamon process running in a VM that can retrieve spans/stats/metrics from
OpenCensus Library, export them to other backends and possibly push configurations back to
Library. See more details on [OC-Agent Readme][OCAgentReadme].
Note: This is an experimental repository and is likely to get backwards-incompatible changes.
Ultimately we may want to move the OC-Agent Go Exporter to [OpenCensus Go core library][OpenCensusGo].
## Installation
```bash
$ go get -u contrib.go.opencensus.io/exporter/ocagent
```
## Usage
```go
import (
"context"
"fmt"
"log"
"time"
"contrib.go.opencensus.io/exporter/ocagent"
"go.opencensus.io/trace"
)
func Example() {
exp, err := ocagent.NewExporter(ocagent.WithInsecure(), ocagent.WithServiceName("your-service-name"))
if err != nil {
log.Fatalf("Failed to create the agent exporter: %v", err)
}
defer exp.Stop()
// Now register it as a trace exporter.
trace.RegisterExporter(exp)
// Then use the OpenCensus tracing library, like we normally would.
ctx, span := trace.StartSpan(context.Background(), "AgentExporter-Example")
defer span.End()
for i := 0; i < 10; i++ {
_, iSpan := trace.StartSpan(ctx, fmt.Sprintf("Sample-%d", i))
<-time.After(6 * time.Millisecond)
iSpan.End()
}
}
```
[OCAgentReadme]: https://github.com/census-instrumentation/opencensus-proto/tree/master/opencensus/proto/agent#opencensus-agent-proto
[OpenCensusGo]: https://github.com/census-instrumentation/opencensus-go
[godoc-image]: https://godoc.org/contrib.go.opencensus.io/exporter/ocagent?status.svg
[godoc-url]: https://godoc.org/contrib.go.opencensus.io/exporter/ocagent
[travis-image]: https://travis-ci.org/census-ecosystem/opencensus-go-exporter-ocagent.svg?branch=master
[travis-url]: https://travis-ci.org/census-ecosystem/opencensus-go-exporter-ocagent

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vendor/contrib.go.opencensus.io/exporter/ocagent/common.go generated vendored Normal file
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// Copyright 2018, OpenCensus 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 ocagent
import (
"math/rand"
"time"
)
var randSrc = rand.New(rand.NewSource(time.Now().UnixNano()))
// retries function fn upto n times, if fn returns an error lest it returns nil early.
// It applies exponential backoff in units of (1<<n) + jitter microsends.
func nTriesWithExponentialBackoff(nTries int64, timeBaseUnit time.Duration, fn func() error) (err error) {
for i := int64(0); i < nTries; i++ {
err = fn()
if err == nil {
return nil
}
// Backoff for a time period with a pseudo-random jitter
jitter := time.Duration(randSrc.Float64()*100) * time.Microsecond
ts := jitter + ((1 << uint64(i)) * timeBaseUnit)
<-time.After(ts)
}
return err
}

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vendor/contrib.go.opencensus.io/exporter/ocagent/connection.go generated vendored Normal file
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// Copyright 2018, OpenCensus 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 ocagent
import (
"math/rand"
"sync/atomic"
"time"
)
const (
sDisconnected int32 = 5 + iota
sConnected
)
func (ae *Exporter) setStateDisconnected() {
atomic.StoreInt32(&ae.connectionState, sDisconnected)
select {
case ae.disconnectedCh <- true:
default:
}
}
func (ae *Exporter) setStateConnected() {
atomic.StoreInt32(&ae.connectionState, sConnected)
}
func (ae *Exporter) connected() bool {
return atomic.LoadInt32(&ae.connectionState) == sConnected
}
const defaultConnReattemptPeriod = 10 * time.Second
func (ae *Exporter) indefiniteBackgroundConnection() error {
defer func() {
ae.backgroundConnectionDoneCh <- true
}()
connReattemptPeriod := ae.reconnectionPeriod
if connReattemptPeriod <= 0 {
connReattemptPeriod = defaultConnReattemptPeriod
}
// No strong seeding required, nano time can
// already help with pseudo uniqueness.
rng := rand.New(rand.NewSource(time.Now().UnixNano() + rand.Int63n(1024)))
// maxJitter: 1 + (70% of the connectionReattemptPeriod)
maxJitter := int64(1 + 0.7*float64(connReattemptPeriod))
for {
// Otherwise these will be the normal scenarios to enable
// reconnections if we trip out.
// 1. If we've stopped, return entirely
// 2. Otherwise block until we are disconnected, and
// then retry connecting
select {
case <-ae.stopCh:
return errStopped
case <-ae.disconnectedCh:
// Normal scenario that we'll wait for
}
if err := ae.connect(); err == nil {
ae.setStateConnected()
} else {
ae.setStateDisconnected()
}
// Apply some jitter to avoid lockstep retrials of other
// agent-exporters. Lockstep retrials could result in an
// innocent DDOS, by clogging the machine's resources and network.
jitter := time.Duration(rng.Int63n(maxJitter))
<-time.After(connReattemptPeriod + jitter)
}
}
func (ae *Exporter) connect() error {
cc, err := ae.dialToAgent()
if err != nil {
return err
}
return ae.enableConnectionStreams(cc)
}

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vendor/contrib.go.opencensus.io/exporter/ocagent/go.mod generated vendored Normal file
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module contrib.go.opencensus.io/exporter/ocagent
require (
github.com/census-instrumentation/opencensus-proto v0.2.0 // this is to match the version used in census-instrumentation/opencensus-service
github.com/golang/protobuf v1.3.1
github.com/grpc-ecosystem/grpc-gateway v1.8.5 // indirect
go.opencensus.io v0.20.2
google.golang.org/api v0.3.1
google.golang.org/grpc v1.19.1
)

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vendor/contrib.go.opencensus.io/exporter/ocagent/go.sum generated vendored Normal file
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cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
github.com/census-instrumentation/opencensus-proto v0.2.0 h1:LzQXZOgg4CQfE6bFvXGM30YZL1WW/M337pXml+GrcZ4=
github.com/census-instrumentation/opencensus-proto v0.2.0/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/gogo/protobuf v1.2.0/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg=
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
github.com/google/go-cmp v0.2.0 h1:+dTQ8DZQJz0Mb/HjFlkptS1FeQ4cWSnN941F8aEG4SQ=
github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
github.com/gorilla/context v1.1.1/go.mod h1:kBGZzfjB9CEq2AlWe17Uuf7NDRt0dE0s8S51q0aT7Yg=
github.com/gorilla/mux v1.6.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
github.com/grpc-ecosystem/grpc-gateway v1.8.5 h1:2+KSC78XiO6Qy0hIjfc1OD9H+hsaJdJlb8Kqsd41CTE=
github.com/grpc-ecosystem/grpc-gateway v1.8.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
github.com/hashicorp/golang-lru v0.5.0 h1:CL2msUPvZTLb5O648aiLNJw3hnBxN2+1Jq8rCOH9wdo=
github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
github.com/openzipkin/zipkin-go v0.1.6/go.mod h1:QgAqvLzwWbR/WpD4A3cGpPtJrZXNIiJc5AZX7/PBEpw=
github.com/pierrec/lz4 v2.0.5+incompatible/go.mod h1:pdkljMzZIN41W+lC3N2tnIh5sFi+IEE17M5jbnwPHcY=
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829/go.mod h1:p2iRAGwDERtqlqzRXnrOVns+ignqQo//hLXqYxZYVNs=
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/client_model v0.0.0-20190115171406-56726106282f/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
github.com/prometheus/common v0.2.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
go.opencensus.io v0.20.1/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
go.opencensus.io v0.20.2 h1:NAfh7zF0/3/HqtMvJNZ/RFrSlCE6ZTlHmKfhL/Dm1Jk=
go.opencensus.io v0.20.2/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190125091013-d26f9f9a57f3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
golang.org/x/net v0.0.0-20190311183353-d8887717615a h1:oWX7TPOiFAMXLq8o0ikBYfCJVlRHBcsciT5bXOrH628=
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 h1:bjcUS9ztw9kFmmIxJInhon/0Is3p+EHBKNgquIzo1OI=
golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a h1:1BGLXjeY4akVXGgbC9HugT3Jv3hCI0z56oJR5vAMgBU=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
google.golang.org/api v0.3.1 h1:oJra/lMfmtm13/rgY/8i3MzjFWYXvQIAKjQ3HqofMk8=
google.golang.org/api v0.3.1/go.mod h1:6wY9I6uQWHQ8EM57III9mq/AjF+i8G65rmVagqKMtkk=
google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19 h1:Lj2SnHtxkRGJDqnGaSjo+CCdIieEnwVazbOXILwQemk=
google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
google.golang.org/grpc v1.19.1 h1:TrBcJ1yqAl1G++wO39nD/qtgpsW9/1+QGrluyMGEYgM=
google.golang.org/grpc v1.19.1/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74=
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

46
vendor/contrib.go.opencensus.io/exporter/ocagent/nodeinfo.go generated vendored Normal file
View File

@@ -0,0 +1,46 @@
// Copyright 2018, OpenCensus 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 ocagent
import (
"os"
commonpb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/common/v1"
"go.opencensus.io"
)
// NodeWithStartTime creates a node using nodeName and derives:
// Hostname from the environment
// Pid from the current process
// StartTimestamp from the start time of this process
// Language and library information.
func NodeWithStartTime(nodeName string) *commonpb.Node {
return &commonpb.Node{
Identifier: &commonpb.ProcessIdentifier{
HostName: os.Getenv("HOSTNAME"),
Pid: uint32(os.Getpid()),
StartTimestamp: timeToTimestamp(startTime),
},
LibraryInfo: &commonpb.LibraryInfo{
Language: commonpb.LibraryInfo_GO_LANG,
ExporterVersion: Version,
CoreLibraryVersion: opencensus.Version(),
},
ServiceInfo: &commonpb.ServiceInfo{
Name: nodeName,
},
Attributes: make(map[string]string),
}
}

496
vendor/contrib.go.opencensus.io/exporter/ocagent/ocagent.go generated vendored Normal file
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@@ -0,0 +1,496 @@
// Copyright 2018, OpenCensus 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 ocagent
import (
"context"
"errors"
"fmt"
"sync"
"time"
"google.golang.org/api/support/bundler"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
"google.golang.org/grpc/metadata"
"go.opencensus.io/plugin/ocgrpc"
"go.opencensus.io/resource"
"go.opencensus.io/stats/view"
"go.opencensus.io/trace"
commonpb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/common/v1"
agentmetricspb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/metrics/v1"
agenttracepb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/trace/v1"
metricspb "github.com/census-instrumentation/opencensus-proto/gen-go/metrics/v1"
resourcepb "github.com/census-instrumentation/opencensus-proto/gen-go/resource/v1"
tracepb "github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1"
)
var startupMu sync.Mutex
var startTime time.Time
func init() {
startupMu.Lock()
startTime = time.Now()
startupMu.Unlock()
}
var _ trace.Exporter = (*Exporter)(nil)
var _ view.Exporter = (*Exporter)(nil)
type Exporter struct {
connectionState int32
// mu protects the non-atomic and non-channel variables
mu sync.RWMutex
// senderMu protects the concurrent unsafe traceExporter client
senderMu sync.RWMutex
started bool
stopped bool
agentAddress string
serviceName string
canDialInsecure bool
traceExporter agenttracepb.TraceService_ExportClient
metricsExporter agentmetricspb.MetricsService_ExportClient
nodeInfo *commonpb.Node
grpcClientConn *grpc.ClientConn
reconnectionPeriod time.Duration
resource *resourcepb.Resource
compressor string
headers map[string]string
startOnce sync.Once
stopCh chan bool
disconnectedCh chan bool
backgroundConnectionDoneCh chan bool
traceBundler *bundler.Bundler
// viewDataBundler is the bundler to enable conversion
// from OpenCensus-Go view.Data to metricspb.Metric.
// Please do not confuse it with metricsBundler!
viewDataBundler *bundler.Bundler
clientTransportCredentials credentials.TransportCredentials
}
func NewExporter(opts ...ExporterOption) (*Exporter, error) {
exp, err := NewUnstartedExporter(opts...)
if err != nil {
return nil, err
}
if err := exp.Start(); err != nil {
return nil, err
}
return exp, nil
}
const spanDataBufferSize = 300
func NewUnstartedExporter(opts ...ExporterOption) (*Exporter, error) {
e := new(Exporter)
for _, opt := range opts {
opt.withExporter(e)
}
traceBundler := bundler.NewBundler((*trace.SpanData)(nil), func(bundle interface{}) {
e.uploadTraces(bundle.([]*trace.SpanData))
})
traceBundler.DelayThreshold = 2 * time.Second
traceBundler.BundleCountThreshold = spanDataBufferSize
e.traceBundler = traceBundler
viewDataBundler := bundler.NewBundler((*view.Data)(nil), func(bundle interface{}) {
e.uploadViewData(bundle.([]*view.Data))
})
viewDataBundler.DelayThreshold = 2 * time.Second
viewDataBundler.BundleCountThreshold = 500 // TODO: (@odeke-em) make this configurable.
e.viewDataBundler = viewDataBundler
e.nodeInfo = NodeWithStartTime(e.serviceName)
e.resource = resourceProtoFromEnv()
return e, nil
}
const (
maxInitialConfigRetries = 10
maxInitialTracesRetries = 10
)
var (
errAlreadyStarted = errors.New("already started")
errNotStarted = errors.New("not started")
errStopped = errors.New("stopped")
errNoConnection = errors.New("no active connection")
)
// Start dials to the agent, establishing a connection to it. It also
// initiates the Config and Trace services by sending over the initial
// messages that consist of the node identifier. Start invokes a background
// connector that will reattempt connections to the agent periodically
// if the connection dies.
func (ae *Exporter) Start() error {
var err = errAlreadyStarted
ae.startOnce.Do(func() {
ae.mu.Lock()
defer ae.mu.Unlock()
ae.started = true
ae.disconnectedCh = make(chan bool, 1)
ae.stopCh = make(chan bool)
ae.backgroundConnectionDoneCh = make(chan bool)
ae.setStateDisconnected()
go ae.indefiniteBackgroundConnection()
err = nil
})
return err
}
func (ae *Exporter) prepareAgentAddress() string {
if ae.agentAddress != "" {
return ae.agentAddress
}
return fmt.Sprintf("%s:%d", DefaultAgentHost, DefaultAgentPort)
}
func (ae *Exporter) enableConnectionStreams(cc *grpc.ClientConn) error {
ae.mu.RLock()
started := ae.started
nodeInfo := ae.nodeInfo
ae.mu.RUnlock()
if !started {
return errNotStarted
}
ae.mu.Lock()
// If the previous clientConn was non-nil, close it
if ae.grpcClientConn != nil {
_ = ae.grpcClientConn.Close()
}
ae.grpcClientConn = cc
ae.mu.Unlock()
if err := ae.createTraceServiceConnection(ae.grpcClientConn, nodeInfo); err != nil {
return err
}
return ae.createMetricsServiceConnection(ae.grpcClientConn, nodeInfo)
}
func (ae *Exporter) createTraceServiceConnection(cc *grpc.ClientConn, node *commonpb.Node) error {
// Initiate the trace service by sending over node identifier info.
traceSvcClient := agenttracepb.NewTraceServiceClient(cc)
ctx := context.Background()
if len(ae.headers) > 0 {
ctx = metadata.NewOutgoingContext(ctx, metadata.New(ae.headers))
}
traceExporter, err := traceSvcClient.Export(ctx)
if err != nil {
return fmt.Errorf("Exporter.Start:: TraceServiceClient: %v", err)
}
firstTraceMessage := &agenttracepb.ExportTraceServiceRequest{
Node: node,
Resource: ae.resource,
}
if err := traceExporter.Send(firstTraceMessage); err != nil {
return fmt.Errorf("Exporter.Start:: Failed to initiate the Config service: %v", err)
}
ae.mu.Lock()
ae.traceExporter = traceExporter
ae.mu.Unlock()
// Initiate the config service by sending over node identifier info.
configStream, err := traceSvcClient.Config(context.Background())
if err != nil {
return fmt.Errorf("Exporter.Start:: ConfigStream: %v", err)
}
firstCfgMessage := &agenttracepb.CurrentLibraryConfig{Node: node}
if err := configStream.Send(firstCfgMessage); err != nil {
return fmt.Errorf("Exporter.Start:: Failed to initiate the Config service: %v", err)
}
// In the background, handle trace configurations that are beamed down
// by the agent, but also reply to it with the applied configuration.
go ae.handleConfigStreaming(configStream)
return nil
}
func (ae *Exporter) createMetricsServiceConnection(cc *grpc.ClientConn, node *commonpb.Node) error {
metricsSvcClient := agentmetricspb.NewMetricsServiceClient(cc)
metricsExporter, err := metricsSvcClient.Export(context.Background())
if err != nil {
return fmt.Errorf("MetricsExporter: failed to start the service client: %v", err)
}
// Initiate the metrics service by sending over the first message just containing the Node and Resource.
firstMetricsMessage := &agentmetricspb.ExportMetricsServiceRequest{
Node: node,
Resource: ae.resource,
}
if err := metricsExporter.Send(firstMetricsMessage); err != nil {
return fmt.Errorf("MetricsExporter:: failed to send the first message: %v", err)
}
ae.mu.Lock()
ae.metricsExporter = metricsExporter
ae.mu.Unlock()
// With that we are good to go and can start sending metrics
return nil
}
func (ae *Exporter) dialToAgent() (*grpc.ClientConn, error) {
addr := ae.prepareAgentAddress()
var dialOpts []grpc.DialOption
if ae.clientTransportCredentials != nil {
dialOpts = append(dialOpts, grpc.WithTransportCredentials(ae.clientTransportCredentials))
} else if ae.canDialInsecure {
dialOpts = append(dialOpts, grpc.WithInsecure())
}
if ae.compressor != "" {
dialOpts = append(dialOpts, grpc.WithDefaultCallOptions(grpc.UseCompressor(ae.compressor)))
}
dialOpts = append(dialOpts, grpc.WithStatsHandler(&ocgrpc.ClientHandler{}))
ctx := context.Background()
if len(ae.headers) > 0 {
ctx = metadata.NewOutgoingContext(ctx, metadata.New(ae.headers))
}
return grpc.DialContext(ctx, addr, dialOpts...)
}
func (ae *Exporter) handleConfigStreaming(configStream agenttracepb.TraceService_ConfigClient) error {
// Note: We haven't yet implemented configuration sending so we
// should NOT be changing connection states within this function for now.
for {
recv, err := configStream.Recv()
if err != nil {
// TODO: Check if this is a transient error or exponential backoff-able.
return err
}
cfg := recv.Config
if cfg == nil {
continue
}
// Otherwise now apply the trace configuration sent down from the agent
if psamp := cfg.GetProbabilitySampler(); psamp != nil {
trace.ApplyConfig(trace.Config{DefaultSampler: trace.ProbabilitySampler(psamp.SamplingProbability)})
} else if csamp := cfg.GetConstantSampler(); csamp != nil {
alwaysSample := csamp.Decision == tracepb.ConstantSampler_ALWAYS_ON
if alwaysSample {
trace.ApplyConfig(trace.Config{DefaultSampler: trace.AlwaysSample()})
} else {
trace.ApplyConfig(trace.Config{DefaultSampler: trace.NeverSample()})
}
} else { // TODO: Add the rate limiting sampler here
}
// Then finally send back to upstream the newly applied configuration
err = configStream.Send(&agenttracepb.CurrentLibraryConfig{Config: &tracepb.TraceConfig{Sampler: cfg.Sampler}})
if err != nil {
return err
}
}
}
// Stop shuts down all the connections and resources
// related to the exporter.
func (ae *Exporter) Stop() error {
ae.mu.RLock()
cc := ae.grpcClientConn
started := ae.started
stopped := ae.stopped
ae.mu.RUnlock()
if !started {
return errNotStarted
}
if stopped {
// TODO: tell the user that we've already stopped, so perhaps a sentinel error?
return nil
}
ae.Flush()
// Now close the underlying gRPC connection.
var err error
if cc != nil {
err = cc.Close()
}
// At this point we can change the state variables: started and stopped
ae.mu.Lock()
ae.started = false
ae.stopped = true
ae.mu.Unlock()
close(ae.stopCh)
// Ensure that the backgroundConnector returns
<-ae.backgroundConnectionDoneCh
return err
}
func (ae *Exporter) ExportSpan(sd *trace.SpanData) {
if sd == nil {
return
}
_ = ae.traceBundler.Add(sd, 1)
}
func (ae *Exporter) ExportTraceServiceRequest(batch *agenttracepb.ExportTraceServiceRequest) error {
if batch == nil || len(batch.Spans) == 0 {
return nil
}
select {
case <-ae.stopCh:
return errStopped
default:
if !ae.connected() {
return errNoConnection
}
ae.senderMu.Lock()
err := ae.traceExporter.Send(batch)
ae.senderMu.Unlock()
if err != nil {
ae.setStateDisconnected()
return err
}
return nil
}
}
func (ae *Exporter) ExportView(vd *view.Data) {
if vd == nil {
return
}
_ = ae.viewDataBundler.Add(vd, 1)
}
func ocSpanDataToPbSpans(sdl []*trace.SpanData) []*tracepb.Span {
if len(sdl) == 0 {
return nil
}
protoSpans := make([]*tracepb.Span, 0, len(sdl))
for _, sd := range sdl {
if sd != nil {
protoSpans = append(protoSpans, ocSpanToProtoSpan(sd))
}
}
return protoSpans
}
func (ae *Exporter) uploadTraces(sdl []*trace.SpanData) {
select {
case <-ae.stopCh:
return
default:
if !ae.connected() {
return
}
protoSpans := ocSpanDataToPbSpans(sdl)
if len(protoSpans) == 0 {
return
}
ae.senderMu.Lock()
err := ae.traceExporter.Send(&agenttracepb.ExportTraceServiceRequest{
Spans: protoSpans,
})
ae.senderMu.Unlock()
if err != nil {
ae.setStateDisconnected()
}
}
}
func ocViewDataToPbMetrics(vdl []*view.Data) []*metricspb.Metric {
if len(vdl) == 0 {
return nil
}
metrics := make([]*metricspb.Metric, 0, len(vdl))
for _, vd := range vdl {
if vd != nil {
vmetric, err := viewDataToMetric(vd)
// TODO: (@odeke-em) somehow report this error, if it is non-nil.
if err == nil && vmetric != nil {
metrics = append(metrics, vmetric)
}
}
}
return metrics
}
func (ae *Exporter) uploadViewData(vdl []*view.Data) {
select {
case <-ae.stopCh:
return
default:
if !ae.connected() {
return
}
protoMetrics := ocViewDataToPbMetrics(vdl)
if len(protoMetrics) == 0 {
return
}
err := ae.metricsExporter.Send(&agentmetricspb.ExportMetricsServiceRequest{
Metrics: protoMetrics,
// TODO:(@odeke-em)
// a) Figure out how to derive a Node from the environment
// b) Figure out how to derive a Resource from the environment
// or better letting users of the exporter configure it.
})
if err != nil {
ae.setStateDisconnected()
}
}
}
func (ae *Exporter) Flush() {
ae.traceBundler.Flush()
ae.viewDataBundler.Flush()
}
func resourceProtoFromEnv() *resourcepb.Resource {
rs, _ := resource.FromEnv(context.Background())
if rs == nil {
return nil
}
rprs := &resourcepb.Resource{
Type: rs.Type,
}
if rs.Labels != nil {
rprs.Labels = make(map[string]string)
for k, v := range rs.Labels {
rprs.Labels[k] = v
}
}
return rprs
}

128
vendor/contrib.go.opencensus.io/exporter/ocagent/options.go generated vendored Normal file
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// Copyright 2018, OpenCensus 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 ocagent
import (
"time"
"google.golang.org/grpc/credentials"
)
const (
DefaultAgentPort uint16 = 55678
DefaultAgentHost string = "localhost"
)
type ExporterOption interface {
withExporter(e *Exporter)
}
type insecureGrpcConnection int
var _ ExporterOption = (*insecureGrpcConnection)(nil)
func (igc *insecureGrpcConnection) withExporter(e *Exporter) {
e.canDialInsecure = true
}
// WithInsecure disables client transport security for the exporter's gRPC connection
// just like grpc.WithInsecure() https://godoc.org/google.golang.org/grpc#WithInsecure
// does. Note, by default, client security is required unless WithInsecure is used.
func WithInsecure() ExporterOption { return new(insecureGrpcConnection) }
type addressSetter string
func (as addressSetter) withExporter(e *Exporter) {
e.agentAddress = string(as)
}
var _ ExporterOption = (*addressSetter)(nil)
// WithAddress allows one to set the address that the exporter will
// connect to the agent on. If unset, it will instead try to use
// connect to DefaultAgentHost:DefaultAgentPort
func WithAddress(addr string) ExporterOption {
return addressSetter(addr)
}
type serviceNameSetter string
func (sns serviceNameSetter) withExporter(e *Exporter) {
e.serviceName = string(sns)
}
var _ ExporterOption = (*serviceNameSetter)(nil)
// WithServiceName allows one to set/override the service name
// that the exporter will report to the agent.
func WithServiceName(serviceName string) ExporterOption {
return serviceNameSetter(serviceName)
}
type reconnectionPeriod time.Duration
func (rp reconnectionPeriod) withExporter(e *Exporter) {
e.reconnectionPeriod = time.Duration(rp)
}
func WithReconnectionPeriod(rp time.Duration) ExporterOption {
return reconnectionPeriod(rp)
}
type compressorSetter string
func (c compressorSetter) withExporter(e *Exporter) {
e.compressor = string(c)
}
// UseCompressor will set the compressor for the gRPC client to use when sending requests.
// It is the responsibility of the caller to ensure that the compressor set has been registered
// with google.golang.org/grpc/encoding. This can be done by encoding.RegisterCompressor. Some
// compressors auto-register on import, such as gzip, which can be registered by calling
// `import _ "google.golang.org/grpc/encoding/gzip"`
func UseCompressor(compressorName string) ExporterOption {
return compressorSetter(compressorName)
}
type headerSetter map[string]string
func (h headerSetter) withExporter(e *Exporter) {
e.headers = map[string]string(h)
}
// WithHeaders will send the provided headers when the gRPC stream connection
// is instantiated
func WithHeaders(headers map[string]string) ExporterOption {
return headerSetter(headers)
}
type clientCredentials struct {
credentials.TransportCredentials
}
var _ ExporterOption = (*clientCredentials)(nil)
// WithTLSCredentials allows the connection to use TLS credentials
// when talking to the server. It takes in grpc.TransportCredentials instead
// of say a Certificate file or a tls.Certificate, because the retrieving
// these credentials can be done in many ways e.g. plain file, in code tls.Config
// or by certificate rotation, so it is up to the caller to decide what to use.
func WithTLSCredentials(creds credentials.TransportCredentials) ExporterOption {
return &clientCredentials{TransportCredentials: creds}
}
func (cc *clientCredentials) withExporter(e *Exporter) {
e.clientTransportCredentials = cc.TransportCredentials
}

248
vendor/contrib.go.opencensus.io/exporter/ocagent/transform_spans.go generated vendored Normal file
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// Copyright 2018, OpenCensus 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 ocagent
import (
"math"
"time"
"go.opencensus.io/trace"
"go.opencensus.io/trace/tracestate"
tracepb "github.com/census-instrumentation/opencensus-proto/gen-go/trace/v1"
"github.com/golang/protobuf/ptypes/timestamp"
)
const (
maxAnnotationEventsPerSpan = 32
maxMessageEventsPerSpan = 128
)
func ocSpanToProtoSpan(sd *trace.SpanData) *tracepb.Span {
if sd == nil {
return nil
}
var namePtr *tracepb.TruncatableString
if sd.Name != "" {
namePtr = &tracepb.TruncatableString{Value: sd.Name}
}
return &tracepb.Span{
TraceId: sd.TraceID[:],
SpanId: sd.SpanID[:],
ParentSpanId: sd.ParentSpanID[:],
Status: ocStatusToProtoStatus(sd.Status),
StartTime: timeToTimestamp(sd.StartTime),
EndTime: timeToTimestamp(sd.EndTime),
Links: ocLinksToProtoLinks(sd.Links),
Kind: ocSpanKindToProtoSpanKind(sd.SpanKind),
Name: namePtr,
Attributes: ocAttributesToProtoAttributes(sd.Attributes),
TimeEvents: ocTimeEventsToProtoTimeEvents(sd.Annotations, sd.MessageEvents),
Tracestate: ocTracestateToProtoTracestate(sd.Tracestate),
}
}
var blankStatus trace.Status
func ocStatusToProtoStatus(status trace.Status) *tracepb.Status {
if status == blankStatus {
return nil
}
return &tracepb.Status{
Code: status.Code,
Message: status.Message,
}
}
func ocLinksToProtoLinks(links []trace.Link) *tracepb.Span_Links {
if len(links) == 0 {
return nil
}
sl := make([]*tracepb.Span_Link, 0, len(links))
for _, ocLink := range links {
// This redefinition is necessary to prevent ocLink.*ID[:] copies
// being reused -- in short we need a new ocLink per iteration.
ocLink := ocLink
sl = append(sl, &tracepb.Span_Link{
TraceId: ocLink.TraceID[:],
SpanId: ocLink.SpanID[:],
Type: ocLinkTypeToProtoLinkType(ocLink.Type),
})
}
return &tracepb.Span_Links{
Link: sl,
}
}
func ocLinkTypeToProtoLinkType(oct trace.LinkType) tracepb.Span_Link_Type {
switch oct {
case trace.LinkTypeChild:
return tracepb.Span_Link_CHILD_LINKED_SPAN
case trace.LinkTypeParent:
return tracepb.Span_Link_PARENT_LINKED_SPAN
default:
return tracepb.Span_Link_TYPE_UNSPECIFIED
}
}
func ocAttributesToProtoAttributes(attrs map[string]interface{}) *tracepb.Span_Attributes {
if len(attrs) == 0 {
return nil
}
outMap := make(map[string]*tracepb.AttributeValue)
for k, v := range attrs {
switch v := v.(type) {
case bool:
outMap[k] = &tracepb.AttributeValue{Value: &tracepb.AttributeValue_BoolValue{BoolValue: v}}
case int:
outMap[k] = &tracepb.AttributeValue{Value: &tracepb.AttributeValue_IntValue{IntValue: int64(v)}}
case int64:
outMap[k] = &tracepb.AttributeValue{Value: &tracepb.AttributeValue_IntValue{IntValue: v}}
case string:
outMap[k] = &tracepb.AttributeValue{
Value: &tracepb.AttributeValue_StringValue{
StringValue: &tracepb.TruncatableString{Value: v},
},
}
}
}
return &tracepb.Span_Attributes{
AttributeMap: outMap,
}
}
// This code is mostly copied from
// https://github.com/census-ecosystem/opencensus-go-exporter-stackdriver/blob/master/trace_proto.go#L46
func ocTimeEventsToProtoTimeEvents(as []trace.Annotation, es []trace.MessageEvent) *tracepb.Span_TimeEvents {
if len(as) == 0 && len(es) == 0 {
return nil
}
timeEvents := &tracepb.Span_TimeEvents{}
var annotations, droppedAnnotationsCount int
var messageEvents, droppedMessageEventsCount int
// Transform annotations
for i, a := range as {
if annotations >= maxAnnotationEventsPerSpan {
droppedAnnotationsCount = len(as) - i
break
}
annotations++
timeEvents.TimeEvent = append(timeEvents.TimeEvent,
&tracepb.Span_TimeEvent{
Time: timeToTimestamp(a.Time),
Value: transformAnnotationToTimeEvent(&a),
},
)
}
// Transform message events
for i, e := range es {
if messageEvents >= maxMessageEventsPerSpan {
droppedMessageEventsCount = len(es) - i
break
}
messageEvents++
timeEvents.TimeEvent = append(timeEvents.TimeEvent,
&tracepb.Span_TimeEvent{
Time: timeToTimestamp(e.Time),
Value: transformMessageEventToTimeEvent(&e),
},
)
}
// Process dropped counter
timeEvents.DroppedAnnotationsCount = clip32(droppedAnnotationsCount)
timeEvents.DroppedMessageEventsCount = clip32(droppedMessageEventsCount)
return timeEvents
}
func transformAnnotationToTimeEvent(a *trace.Annotation) *tracepb.Span_TimeEvent_Annotation_ {
return &tracepb.Span_TimeEvent_Annotation_{
Annotation: &tracepb.Span_TimeEvent_Annotation{
Description: &tracepb.TruncatableString{Value: a.Message},
Attributes: ocAttributesToProtoAttributes(a.Attributes),
},
}
}
func transformMessageEventToTimeEvent(e *trace.MessageEvent) *tracepb.Span_TimeEvent_MessageEvent_ {
return &tracepb.Span_TimeEvent_MessageEvent_{
MessageEvent: &tracepb.Span_TimeEvent_MessageEvent{
Type: tracepb.Span_TimeEvent_MessageEvent_Type(e.EventType),
Id: uint64(e.MessageID),
UncompressedSize: uint64(e.UncompressedByteSize),
CompressedSize: uint64(e.CompressedByteSize),
},
}
}
// clip32 clips an int to the range of an int32.
func clip32(x int) int32 {
if x < math.MinInt32 {
return math.MinInt32
}
if x > math.MaxInt32 {
return math.MaxInt32
}
return int32(x)
}
func timeToTimestamp(t time.Time) *timestamp.Timestamp {
nanoTime := t.UnixNano()
return &timestamp.Timestamp{
Seconds: nanoTime / 1e9,
Nanos: int32(nanoTime % 1e9),
}
}
func ocSpanKindToProtoSpanKind(kind int) tracepb.Span_SpanKind {
switch kind {
case trace.SpanKindClient:
return tracepb.Span_CLIENT
case trace.SpanKindServer:
return tracepb.Span_SERVER
default:
return tracepb.Span_SPAN_KIND_UNSPECIFIED
}
}
func ocTracestateToProtoTracestate(ts *tracestate.Tracestate) *tracepb.Span_Tracestate {
if ts == nil {
return nil
}
return &tracepb.Span_Tracestate{
Entries: ocTracestateEntriesToProtoTracestateEntries(ts.Entries()),
}
}
func ocTracestateEntriesToProtoTracestateEntries(entries []tracestate.Entry) []*tracepb.Span_Tracestate_Entry {
protoEntries := make([]*tracepb.Span_Tracestate_Entry, 0, len(entries))
for _, entry := range entries {
protoEntries = append(protoEntries, &tracepb.Span_Tracestate_Entry{
Key: entry.Key,
Value: entry.Value,
})
}
return protoEntries
}

274
vendor/contrib.go.opencensus.io/exporter/ocagent/transform_stats_to_metrics.go generated vendored Normal file
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// Copyright 2018, OpenCensus 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 ocagent
import (
"errors"
"time"
"go.opencensus.io/stats"
"go.opencensus.io/stats/view"
"go.opencensus.io/tag"
"github.com/golang/protobuf/ptypes/timestamp"
metricspb "github.com/census-instrumentation/opencensus-proto/gen-go/metrics/v1"
)
var (
errNilMeasure = errors.New("expecting a non-nil stats.Measure")
errNilView = errors.New("expecting a non-nil view.View")
errNilViewData = errors.New("expecting a non-nil view.Data")
)
func viewDataToMetric(vd *view.Data) (*metricspb.Metric, error) {
if vd == nil {
return nil, errNilViewData
}
descriptor, err := viewToMetricDescriptor(vd.View)
if err != nil {
return nil, err
}
timeseries, err := viewDataToTimeseries(vd)
if err != nil {
return nil, err
}
metric := &metricspb.Metric{
MetricDescriptor: descriptor,
Timeseries: timeseries,
}
return metric, nil
}
func viewToMetricDescriptor(v *view.View) (*metricspb.MetricDescriptor, error) {
if v == nil {
return nil, errNilView
}
if v.Measure == nil {
return nil, errNilMeasure
}
desc := &metricspb.MetricDescriptor{
Name: stringOrCall(v.Name, v.Measure.Name),
Description: stringOrCall(v.Description, v.Measure.Description),
Unit: v.Measure.Unit(),
Type: aggregationToMetricDescriptorType(v),
LabelKeys: tagKeysToLabelKeys(v.TagKeys),
}
return desc, nil
}
func stringOrCall(first string, call func() string) string {
if first != "" {
return first
}
return call()
}
type measureType uint
const (
measureUnknown measureType = iota
measureInt64
measureFloat64
)
func measureTypeFromMeasure(m stats.Measure) measureType {
switch m.(type) {
default:
return measureUnknown
case *stats.Float64Measure:
return measureFloat64
case *stats.Int64Measure:
return measureInt64
}
}
func aggregationToMetricDescriptorType(v *view.View) metricspb.MetricDescriptor_Type {
if v == nil || v.Aggregation == nil {
return metricspb.MetricDescriptor_UNSPECIFIED
}
if v.Measure == nil {
return metricspb.MetricDescriptor_UNSPECIFIED
}
switch v.Aggregation.Type {
case view.AggTypeCount:
// Cumulative on int64
return metricspb.MetricDescriptor_CUMULATIVE_INT64
case view.AggTypeDistribution:
// Cumulative types
return metricspb.MetricDescriptor_CUMULATIVE_DISTRIBUTION
case view.AggTypeLastValue:
// Gauge types
switch measureTypeFromMeasure(v.Measure) {
case measureFloat64:
return metricspb.MetricDescriptor_GAUGE_DOUBLE
case measureInt64:
return metricspb.MetricDescriptor_GAUGE_INT64
}
case view.AggTypeSum:
// Cumulative types
switch measureTypeFromMeasure(v.Measure) {
case measureFloat64:
return metricspb.MetricDescriptor_CUMULATIVE_DOUBLE
case measureInt64:
return metricspb.MetricDescriptor_CUMULATIVE_INT64
}
}
// For all other cases, return unspecified.
return metricspb.MetricDescriptor_UNSPECIFIED
}
func tagKeysToLabelKeys(tagKeys []tag.Key) []*metricspb.LabelKey {
labelKeys := make([]*metricspb.LabelKey, 0, len(tagKeys))
for _, tagKey := range tagKeys {
labelKeys = append(labelKeys, &metricspb.LabelKey{
Key: tagKey.Name(),
})
}
return labelKeys
}
func viewDataToTimeseries(vd *view.Data) ([]*metricspb.TimeSeries, error) {
if vd == nil || len(vd.Rows) == 0 {
return nil, nil
}
// Given that view.Data only contains Start, End
// the timestamps for all the row data will be the exact same
// per aggregation. However, the values will differ.
// Each row has its own tags.
startTimestamp := timeToProtoTimestamp(vd.Start)
endTimestamp := timeToProtoTimestamp(vd.End)
mType := measureTypeFromMeasure(vd.View.Measure)
timeseries := make([]*metricspb.TimeSeries, 0, len(vd.Rows))
// It is imperative that the ordering of "LabelValues" matches those
// of the Label keys in the metric descriptor.
for _, row := range vd.Rows {
labelValues := labelValuesFromTags(row.Tags)
point := rowToPoint(vd.View, row, endTimestamp, mType)
timeseries = append(timeseries, &metricspb.TimeSeries{
StartTimestamp: startTimestamp,
LabelValues: labelValues,
Points: []*metricspb.Point{point},
})
}
if len(timeseries) == 0 {
return nil, nil
}
return timeseries, nil
}
func timeToProtoTimestamp(t time.Time) *timestamp.Timestamp {
unixNano := t.UnixNano()
return &timestamp.Timestamp{
Seconds: int64(unixNano / 1e9),
Nanos: int32(unixNano % 1e9),
}
}
func rowToPoint(v *view.View, row *view.Row, endTimestamp *timestamp.Timestamp, mType measureType) *metricspb.Point {
pt := &metricspb.Point{
Timestamp: endTimestamp,
}
switch data := row.Data.(type) {
case *view.CountData:
pt.Value = &metricspb.Point_Int64Value{Int64Value: data.Value}
case *view.DistributionData:
pt.Value = &metricspb.Point_DistributionValue{
DistributionValue: &metricspb.DistributionValue{
Count: data.Count,
Sum: float64(data.Count) * data.Mean, // because Mean := Sum/Count
// TODO: Add Exemplar
Buckets: bucketsToProtoBuckets(data.CountPerBucket),
BucketOptions: &metricspb.DistributionValue_BucketOptions{
Type: &metricspb.DistributionValue_BucketOptions_Explicit_{
Explicit: &metricspb.DistributionValue_BucketOptions_Explicit{
Bounds: v.Aggregation.Buckets,
},
},
},
SumOfSquaredDeviation: data.SumOfSquaredDev,
}}
case *view.LastValueData:
setPointValue(pt, data.Value, mType)
case *view.SumData:
setPointValue(pt, data.Value, mType)
}
return pt
}
// Not returning anything from this function because metricspb.Point.is_Value is an unexported
// interface hence we just have to set its value by pointer.
func setPointValue(pt *metricspb.Point, value float64, mType measureType) {
if mType == measureInt64 {
pt.Value = &metricspb.Point_Int64Value{Int64Value: int64(value)}
} else {
pt.Value = &metricspb.Point_DoubleValue{DoubleValue: value}
}
}
func bucketsToProtoBuckets(countPerBucket []int64) []*metricspb.DistributionValue_Bucket {
distBuckets := make([]*metricspb.DistributionValue_Bucket, len(countPerBucket))
for i := 0; i < len(countPerBucket); i++ {
count := countPerBucket[i]
distBuckets[i] = &metricspb.DistributionValue_Bucket{
Count: count,
}
}
return distBuckets
}
func labelValuesFromTags(tags []tag.Tag) []*metricspb.LabelValue {
if len(tags) == 0 {
return nil
}
labelValues := make([]*metricspb.LabelValue, 0, len(tags))
for _, tag_ := range tags {
labelValues = append(labelValues, &metricspb.LabelValue{
Value: tag_.Value,
// It is imperative that we set the "HasValue" attribute,
// in order to distinguish missing a label from the empty string.
// https://godoc.org/github.com/census-instrumentation/opencensus-proto/gen-go/metrics/v1#LabelValue.HasValue
//
// OpenCensus-Go uses non-pointers for tags as seen by this function's arguments,
// so the best case that we can use to distinguish missing labels/tags from the
// empty string is by checking if the Tag.Key.Name() != "" to indicate that we have
// a value.
HasValue: tag_.Key.Name() != "",
})
}
return labelValues
}

17
vendor/contrib.go.opencensus.io/exporter/ocagent/version.go generated vendored Normal file
View File

@@ -0,0 +1,17 @@
// Copyright 2018, OpenCensus 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 ocagent
const Version = "0.0.1"