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6f04903876
* draft using stop aggregating on prometheus client (counters) * remove prometheus client aggregations Measures are being exported as summaries since histograms doesn't exist on OpenTelemetry yet. Better error handling must be done. * make pre commit * add simple error callback * remove options from collector * refactor exporter to smaller methods * wording * change to snapshot * lock collection and checkpointset read * remove histogram options and unexported fields from the Exporter * documenting why prometheus uses a stateful batcher * add todo for histograms * change summaries objects to summary quantiles * remove histogram buckets from tests * wording * rename 'lockedCheckpoint' to 'syncCheckpointSet' * default summary quantiles should be defaulted to no buckets. * add quantiles options * refactor test.CheckpointSet and add docs * flip aggregators merge Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
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.