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* Prom exporter structure * update prometheus exporter with master and add example. * remove distributedcontext from prometheus example * docs and interface checker * make precommit * make precommit & remove "OnRegisterError" * coerce values to float * return register errors and maybe fix precommit? * add option to specify a prometheus.Registry * make exporter implement http.Handler interface * fix map keys bugs * remove unused const * fix modules dependencies. * add support for histogram * get metrics with labels values only instead of a labels map * make exporter implements label encoder interface * encode labels if the encoder is different. * split metrics on several files and encapsulate them in structs * make pre commit * unexport 'sanitize' * remove 'AllValues' in favor of 'Points' and change to 'NewDefaultLabelEncoder' * add prometheus tests * remove newlines on struct declaration * formatting * rewording * imports * add todo on labelValues * blame myself for todo (: * add todos on sanitize * add support for summaries. custom remove label encoder. * imports * imports * update with upstream |
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| basic | ||
| http | ||
| http-stackdriver | ||
| jaeger | ||
| namedtracer | ||
| prometheus | ||
| README.md | ||
Example
HTTP
This is a simple example that demonstrates tracing http request from client to server. The example shows key aspects of tracing such as:
- Root Span (on Client)
- Child Span (on Client)
- Child Span from a Remote Parent (on Server)
- SpanContext Propagation (from Client to Server)
- Span Events
- Span Attributes
Example uses
- open-telemetry SDK as trace instrumentation provider,
- httptrace plugin to facilitate tracing http request on client and server
- http trace_context propagation to propagate SpanContext on the wire.
- stdout exporter to print information about spans in the terminal
How to run?
Prequisites
- go 1.13 installed
- GOPATH is configured.
1 Download git repo
GO111MODULE="" go get -d go.opentelemetry.io/otel
2 Start Server
cd $GOPATH/src/go.opentelemetry.io/otel/example/http/
go run ./server/server.go
3 Start Client
cd $GOPATH/src/go.opentelemetry.io/otel/example/http/
go run ./client/client.go
4 Check traces in stdout
The spans should be visible in stdout in the order that they were exported.