This is part 1 of the task to introduce capabilities and declare
processor's intent to mutate or not mutate consumed data for the
purpose of optimizing pipeline data ownership.
If a processor declares that they mutate data the pipeline
that the processor is in will use cloning fan out connector.
This is done only if the pipeline shares a receiver with another
pipeline.
This ensures that it is safe for processor modify the data (because
pipelines work concurrently) and avoids cloning for pipelines that
consume data from the same receiver but do not modify it.
For more details see:
https://github.com/open-telemetry/opentelemetry-collector/issues/372
* Change census-instrumentation to open-telemetry and update authors
census-instrumentation/opencensus is now open-telemetry/opentelemetry
"OpenCensus Authors" is now "OpenTelemetry Authors"
"Copyright 2018" is now "Copyright 2019"
Fix go fmt
- Build pipeline processors and plug them into exporters.
- Added tests to verify that single exporter and multiple exporter pipelines
(fan out) work correctly.
- Minor cleanup in exporters_builder.go
- Fixed opencensus receiver TestCreateReceiver to find available port for
testing (instead of fixed port which would fail if already listened).
* Rename [Trace|Metrics]DataProcessor to [Trace|Metrics]Processor
* Rename TraceProcessor to TraceConsumer as discussed.
* Add empty_test for processor.
Tigran Najaryan
Yang Song
Steve Flanders
Bogdan Drutu