* Point to the convenience functions in api/key package
This is to increase the visibility of the api/key package through the
api/core package, otherwise developers often tend to miss the api/key
package altogether and write `core.Key(name).TYPE(value)` and complain
at the verbosity of such a construction. The api/key package would
allow them to write `key.TYPE(name, value)`.
* Use the api/key package where applicable
This transforms all the uses of `core.Key(name).TYPE(value)` to
`key.TYPE(name, value)`. This also should help increasing the
visibility of the api/key package for developers reading the otel-go
code.
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
* Update License header for all source files
- Add Apache 2.0 header to source files that did not have one.
- Update all existing headers dated to 2019 to be 2020
- Remove comma from License header to comply with the Apache 2.0
guidelines.
* Update Copyright notice
Use the standard Copyright notices outlined by the
[CNCF](https://github.com/cncf/foundation/blob/master/copyright-notices.md#copyright-notices)
* Propagate context changes in mix tests
We will need this for testing the correlation context and baggage
items propagation between the APIs.
* Add baggage interoperation tests
The test adds a baggage item to active OT span and some correlation
key value to current Otel span. Then makes sure that the OT span
contains both the baggage item and some translated version of the
correlation key value its Otel sibling got, and that the Otel span
contains both the correlation key value and the baggage item its OT
sibling got.
* Add hooks functionality to baggage propagation
This introduces two kinds of hooks into the correlation context
code.
The set hook gets called every time we set a Map in the context. The
hook receives a context with the Map and returns a new context.
The get hook gets called every time we get a Map from the context. The
hook receives the context and the map, and returns a new Map.
These hooks will be used for correlation context and baggage items
propagation between the Otel and OT APIs.
* Warn on foreign opentracing span
* fixup for using otel propagators
* Add utility function for setting up bridge and context
This prepares the context by installing the hooks, so the correlation
context and baggage items can be propagated between the APIs.
* Add bridge span constructor
So I do not need to remember about initializing a newly added member
in several places now.
* Propagate baggage across otel and OT APIs
This uses the set hook functionality to propagate correlation context
changes from Otel to OT spans by inserting keys and values into the
baggage items. The get hook functionality is used to propagate baggage
items from active OT span into the otel correlation context.
* Use correlation Map for baggage items
We will put this map into the context with correlation context
functions, and that is easier if we have correlation.Map, not
map[string]string.
* Use otel propagators in bridge
The otel propagators are now kinda sorta usable for opentracing
bridge. Some more work is needed to make it fully work, though -
correlation context set with the otel API is not propagated to OT
spans as baggage items yet.
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
* Add `Span#Error` method to simplify setting an error status and message.
* `Span#Error` should no-op on nil errors
* Record errors as a span event rather than status/attributes.
The implementation in the SDK package now relies on existing API methods.
* Add WithErrorStatus() ErrorOption to allow setting span status on error.
* Apply suggestions from code review
Co-Authored-By: Krzesimir Nowak <qdlacz@gmail.com>
* Address code review feedback
* Clean up RecordError tests
* Ensure complete and unique error type is recorded for defined types
* Avoid duplicating logic under test in tests
* Move TestError to internal/testing package, improve RecordError test scenarios
Co-authored-by: Krzesimir Nowak <qdlacz@gmail.com>
It would be nice to follow a single schema for naming context
functions. In the trace package we followed the form FooFromContext
and ContextWithFoo. Do the same in the correlation package. The schema
WithFoo is mainly used for functions following the options pattern.
Not sure about a name of the NewContext function, though. For now I
have left it alone.
Co-authored-by: Rahul Patel <rghetia@yahoo.com>
Tracer.WithSpan() will now accept StartOptions as a variadic final parameter `opts`
that will be passed to the Tracer.Start() invocation that creates the Span
wrapping the user-provided function.
This PR removes the non-compliant ChildOf and FollowsFrom interfaces
and the Relation type, which were inherited from OpenTracing via the
initial prototype. Instead allow adding a span context to the go
context as a remote span context and use a simple algorithm for
figuring out an actual parent of the new span, which was proposed for
the OpenTelemetry specification.
Also add a way to ignore current span and remote span context in go
context, so we can force the tracer to create a new root span - a span
with a new trace ID.
That required some moderate changes in the opentracing bridge - first
reference with ChildOfRef reference type becomes a local parent, the
rest become links. This also fixes links handling in the meantime. The
downside of the approach proposed here is that we can only set the
remote parent when creating a span through the opentracing API.
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
* Rename distributedcontext package to correlation
Correlation is the name we agreed upon.
* Move trace propagators to api/trace
The trace propagators tests had to be moved to a testtrace subpackage
to avoid import cycles between api/trace and internal/trace.
Needed to shut up golint about stutter in trace.TraceContext -
TraceContext is a name of a W3C spec, so this stutter is
expected. It's certainly still better than golint's suggestion of
having trace.Context.
* Rename api/propagators to api/propagation
This package will not contain any propagators in the long run, just
the interface definitions.
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
Change all occurrences of value to pointer receivers
Add meta sys files to .gitignore
Code cleanup e.g.
- Don't capitalize error statements
- Fix ignored errors
- Fix ambiguous variable naming
- Remove unnecessary type casting
- Use named params
Fix#306
* Make span start/end configuration more greppable
Rename SpanOption to StartOption
Rename StartOptions to StartConfig
Rename EndOptions to EndConfig
fixes#197
* Remove AddLink & Link from Span Interface
I have remove AddLink and Link from the interface and all it refereneces and replaced AddLink with addlink, Also Removed respective unit tests
Signed-off-by: vineeth <vineethpothulapati@outlook.com>
* removing the unused code from unit tests
Signed-off-by: VineethReddy02 <vineethpothulapati@outlook.com>
* move bridge out of the experimental directory
* drop a leftover from experimental stuff in gitignore
found by accident when doing `git grep experimental`.
