* POC using the grpc.ClientConn to handle connections
* Update invalid client security test
* Update client start test for a bad endpoint
* Use any ClientConn a user provides
* Connect ReconnectionPeriod to gRPC conn retries
* Replace connection retry handling direct in otlptracegrpc
* Fix client comments
* Fix comment for NewGRPCConfig
* Replace reconnection test
* Fix grammar
* Remove unrelated changes
* Remove connection pkg
* Rename evaluate to retryable
* POC using the grpc.ClientConn to handle connections
* Replace connection retry handling direct in otlptracegrpc
* Add ClientConn use changes to changelog
* Update otlptracegrpc options
* Only close ClientConn that the Client create
* Remove listener wrapper from mock_collector_test
This is not needed now that no tests relies on the listener to wait for
a connection to be established before continuing.
* Fix spelling error
* Do not use deprecated options in the otel-collector example
* Add unit tests for retryable and throttleDelay funcs
* Add unit tests for context heredity
* Add test that exporter stop is linked to context cancel
* go mod tidy
* Update exporters/otlp/otlptrace/otlptracegrpc/client.go
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Fix go.mod from rebase
* Remove wrong comment about client stop closing gRPC conn
* Fix shutdown test cleanup
Do not check the second call to the client Stop. There is no guarantee
it will not error in normal operation.
* Make lint fixes
* Fix flaky unit test
Use the internals of the client to explicit cancel the context returned
from exportContext. This gets around the bug where the select in Stop
may randomly choose the non-context Done case and avoid returning an
error (also failing to cancel the context).
* Remove deprecation
To configure the client/exporter with environment variables these
options are used. There is no way to fully remove these options without
removing support for configuration with environment variables. Leave
that decision and strategy determination to a separate PR.
* Fix grammatical error in comment
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* change resource.Default to be evaluated on first call, rather than on import
* guard defaultResource creation with sync.Once, fallback to emtpyResource
* update CHANGELOG
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Empty queued spans when ForceFlush called
Update the implementation of ForceFlush() to first ensure that all spans
which are queued are added to the batch before calling export spans.
Create a small ReadOnlySpan implementation which can be used as a marker
that ForceFlush has been invoked and used to notify when all spans are
ready to be exported.
Fixes#2080.
* Add a changelog entry.
* Update CHANGELOG.md
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Update sdk/trace/batch_span_processor.go
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Improve test case to verify multiple flushes.
* Refactor code to use enqueue.
* Be more defensive on waiting for queue.
Update the handling of the force flush span so we only wait on the
channel if we were able to enqueue the span to the queue.
* Fix linter.
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Version stable-v1 modset to be 1.0.2 for release
* Prepare stable-v1 for version v1.0.2
* Update changelog
Add new 1.0.2 section and move relevant items that the release will
contain to this section.
* Add article to CHANGELOG entry to correct grammar
* Release 1.1.0 instead of 1.0.2
* Prepare stable-v1 for version v1.1.0
* Apply suggestions from code review
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Generated from a modified version of the v1.5.0 release of the
specification using a modified version of the semconvgen tools. The
specification contained capitalized IDs that caused errors from the
semconvgen tool. These errors were manually resolved and the rest of the
Go formatting tools were used to provide consistent code.
Important to note, the Go semconvgen tooling includes new name
capitalization rules for ReplicaSet, StatefulSet, and DaemonSet that
mean code names are not backwards compatible. This is included in the
changelog to help users perform the upgrade.
Generated from the v1.6.1 release of the specification using the
semconvgen tool manually.
This skips the v1.6.0 release of the specification, with no plans to add
support in the future, due to a backwards in compatibility bug in
included.
* Add semconv/v1.7.0 package
Generated from the v1.7.0 release of the specification using the
semconvgen tool manually. This also updates the project to use this
version of the semconv package.
This does not include the prior, and missing, v1.5.0 and v1.6.0 versions
of the semconv package. They are planned to be added in a follow-on PR.
* Update CHANGELOG.md
* Fix IPv6 handling errors in semconv.NetAttributesFromHTTPRequest
fixes#2283
* Enter PR number in CHANGELOG
* Remove unnecessary creation and then assignment
Standardize order of checks for IP, Name, Port
* Assume happy path when parsing host and port
i.e. assume net.SplitHostPort(input) will succeed
* Get rid of uint64 for port
* Fix git merge of main by adding back strings import
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
Co-authored-by: Tyler Yahn <codingalias@gmail.com>
* Fix: http.client_ip vs multiple addresses #2282
* Split only the necessary number of values.
As suggested by @pellared. Good suggestion, that.
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Add ability to parse Schema files according to OTEP 0152
The parser and parsed representation (AST) are placed in a separate
Go module so that they are can be consumed independently without
the need to bring the rest of the SDK.
Ability to use the parsed representation for schema conversions
can be added later.
* Fixes based on PR comments
* Rename "label" to "attributes"
See https://github.com/open-telemetry/oteps/pull/181
* Fixes based on PR comments
* Add README.md
* Wrap the error in Parse()
* Add docs for exporter types
* Use yaml.NewDecoder
* Verify parsed content in the test
* Fix indentation in README example
* Fix README spaces vs tabs
* Correctly space imports
* Add heading to README
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* move Descriptor to sdkapi, add test
* rename Descriptor to sdkapi
* precommit
* Move the rest of the sdkapi
* use alias for Observation and Measurement
* Changelog
* pr num
* comment Measurement and Observation
* swap comments
* move->moved
* Update build tools
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Update CHANGELOG and versions.yaml
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Prepare stable-v1 for version v1.0.1
* Prepare experimental-metrics for version v0.24.0
* Prepare bridge for version v0.24.0
* Update releasing documentation and create add-tags make target
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* use multimod from the .tools directory
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* precommit
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* factor instrumentation library out of the instrument descriptor
* SDK tests pass
* checkpoint work
* otlp and opencensus tests passing
* prometheus
* tests pass, working on lint
* lint applied: MetricReader->Reader
* comments
* Changelog
* Apply suggestions from code review
Co-authored-by: alrex <alrex.boten@gmail.com>
* remove an interdependency
* fix build
* re-indent one
* Apply suggestions from code review
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Lint&feedback
* update after rename
* comment fix
* style fix for meter options
* remove libraryReader, let Controller implement the reader API directly
* rename 'impl' field to 'provider'
* remove a type assertion
* move metric/registry into internal; move registry.MeterProvider into metric controller
* add test for controller registry function
* CheckpointSet->Reader everywhere
* lint
* remove two unnecessary accessor methods; Controller implements MeterProvider and InstrumentationLibraryReader directly, no need to get these
* use a sync.Map
* ensure the initOnce is always called; handle multiple errors
* Apply suggestions from code review
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* cleanup locking in metrictest
* Revert "ensure the initOnce is always called; handle multiple errors"
This reverts commit 3356eb5ed0.
* Revert "use a sync.Map"
This reverts commit ea7bc599bd.
* restore the TODO about sync.Map
Co-authored-by: alrex <alrex.boten@gmail.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Update versions file for 1.0.0 release
* Prepare stable-v1 for version v1.0.0
* Update trace signal status in documentation
* Update changelog
* Update CHANGELOG.md
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Robert Pająk <pellared@hotmail.com>
This method did not have any effect. had been used back
when exporters were providing utility methods for setting up full
pipelines. These utilities went away in
4883cb119d.
We previously were recording the Schema URL but were not setting
the recorded value when exporting. This change now uses the recorded
value when exporting to OTLP.
* Fix slice-valued attributes when used as map keys
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* store pointers to slice values to make them usable as map keys
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Emit slice-typed attribute values as slices, not pointers to slices
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Update release versions
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Prepare experimental-metrics for version v0.23.0
* Prepare bridge for version v0.23.0
* Prepare stable-v1 for version v1.0.0-RC3
* Update CHANGELOG
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Update the website getting started docs
Add a new example, fib, that contains an application for the computation
of Fibonacci numbers. Use this example to update the website getting
started documentation.
* Revise docs english
* Update example/fib/go.mod
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Add a What's Next section
* Clean up intro
* Apply suggestions from code review
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Apply feedback
* Return from Poll on error
* Update website_docs/getting-started.md
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
* Add root and parent relationship info
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
* s/ValueRecorder/Histogram/g
* s/ValueObserver/GaugeObserver/g
* s/UpDownSumObserver/UpDownCounterObserver/g
* s/SumObserver/CounterObserver/g
* changelog
* pr num
* unstable->experimental
* Apply suggestions from code review
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Apply suggestions from code review
* apply feedback from @evantorrie by hand
* Apply suggestions from code review
Thanks
Co-authored-by: ET <evantorrie@users.noreply.github.com>
* Update sdk/export/metric/metric.go
* Apply suggestions from code review
Thank you @evantorrie !
Co-authored-by: ET <evantorrie@users.noreply.github.com>
* revert getting-started fix let tyler's update remove this text
* more variable name fixes
* test repair
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
Co-authored-by: ET <evantorrie@users.noreply.github.com>
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Update trace API config creation funcs
Follow our style guide and return the config struct instead of pointers.
* Update changelog with changes
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Deprecate Array attribute in favor of *Slice types
* Use new attr types in Jaeger exporter
* Use slice attr types in otlpmetric
* Use slice attr types in otlptrace
* Use slice attr types in zipkin exporter
* Remove array attr test from deprectated oteltest func
* Use StringSlice for cmd arg resource attr
* Add changes to the changelog
* Remove use of deprecated Array func
* Move InstrumentKind into the new metric/sdkapi package
* remove the alias
* remove the alias (everywhere)
* Changelog
* Add a test
* merge updates
* fix changelog
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Add benchmarks for error handler
* All multiple global ErrorHandler sets
* Use ioutil instead of io for Discard
* Add changes to changelog
* Add unit tests for delegation
* fix(2138): add guard to constructOTResources to return an empty resource when attributes are not supplied
Fixes: https://github.com/open-telemetry/opentelemetry-go/issues/2138
* Update CHANGELOG.md
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Deprecate oteltest.Harness for removal
* Add changes to changelog
* Alias oteltest.Harness to internaltest
* Update oteltest/tracer_test.go
remove `oteltest` import.
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
* Removed DroppedAttributeCount field from Link struct
* Reintroduced DroppedAttributeCount with a wrapper struct
* Added Link type in otel/sdk package and used it instead of Trace API equivalent
* Added changelog entry
* Linting fix in changelog
* Deleted duplicated changelog section added by mistake
* Expanded changelog entry and moved it under the 'Added' section
* Explicitly mentioned otel/trace library in changelog entry under 'Removed' section to avoid ambiguity
* Add retry internal package
* Use retry package in connection
* Use retry package for otlpconfig
* Use the retry package in otlptracegrpc
* Use the retry package in otlptracehttp
* Add changes to CHANGELOG
* Lint internal
* Update otlptracehttp tests
* Update dependencies
* Add retry tests to otlptracehttp
* Remove TestRetry from otlptracehttp
* API: create new linked span from current context
* ran make precommit
* Update trace/trace.go
* Updated CHANGELOG
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* remove resource.WithBuiltinDetectors() which has not been maintained
* add changelog file
* Update CHANGELOG.md
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
* resolved a repeated conflict
* fix unittest error
* fix unittest error
* fix the PR according to suggestion
* fix unittest fail and del repeated testcase in CI system
* Update CHANGELOG.md
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Simplify trace_context tests
Refactor the propagation/trace_context tests to be targeted at testing
the propagator functionality only and remove extraneous dependencies.
Fix the TraceContext Inject method from injecting the tracestate header
if no value exists.
* Add changes to changelog
* Added explicit mapping between GOOS and semconv OS type attribute value
* Added tests for OS type mappings
* Added changelog entry
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Added Linux-specific detector for the os.description attribute
* Generalized OS description detector with placeholder function for unimplemented OSes
* Extended osDescription function to *nix OSes based on golang.org/x/sys/unix
* Added WithOS resource configuration function to configure all of the OS resource attributes
* Implemented osDescription funtion for Windows OS
* Improved documentation header for *nix version of the osDescription function
* Added support for reading os-release file
* Added/updated documentation headers for *nix implementation of osDescription and related functions
* Changelog update
* Added support for reading macOS version information
* Mock approach to test OS description attribute
* Extracted common function getFirstAvailableFile to read the first available file from a list of candidates
* Upgraded golang.org/x/sys
* Changelog update
* Fixed wrong function name in documentation header for WithOSDescription
* Updated documentation header for platformOSDescription function
* Renamed restoreProcessAttributesProviders test helper function
The function restoreProcessAttributesProviders was renamed to simply
restoreAttributesProviders to better reflect its broader scope, which
not only applies to process attribute's providers.
* Fixed os_linux.go overriding build tags defined inside the file
The suffix on os_linux.go was overriding the build tags already defined
in that file. The file was renamed to os_release_unix.go, reflecting
the main function defined in the file.
For consistency, os_darwin.go was renamed to os_release_darwing.go, as
its primary purpose is to also define the osRelease function.
* Removed use of discontinued function resource.WithoutBuiltin
* Added PR number to changelog entries
* Updated go.sum files after run of make lint
* Linux implementation: ignore lines with an empty key
* Linux implementation: avoid unquoting strings less than two chars
* WIP: added tests for Linux support functions
* WIP: added tests for charsToString and getFirstAvailableFile functions
* Replaced os.CreateTemp with ioutil.TempFile as the former only exists in Go 1.16
* Added unameProvider type to decouple direct reference to unix.Uname function inside Uname()
* Added tests for Uname() function
* Replaced *os.File with io.Reader in parseOSReleaseFile to ease testing
* Added tests for parseOSReleaseFile function
* Darwin implementation: added tests for buildOSRelease function
* Replaced *os.File with io.Reader in parsePlistFile to ease testing
* Darwin implementation: added tests for parsePlistFile function
* Type in documentation header for Linux osRelease function
* Extracted logic for reading specific registry values into helper functions
* Added basic tests for Windows version of platformOSDescription and helper functions
* Manually formatted uint64 to strings to have an uniform interface for test assertions
* Asserts there's no error when opening registry key for testing
Co-authored-by: Robert Pająk <pellared@hotmail.com>
* Simplified subtests by using a single test with multiple asserts
* go.sum update after running make
* Fix typo
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* WIP: added placeholder implementation of platformOSDescription for unsupported OSes
* Fixed typo on osRelease documentation header
Co-authored-by: Chris Bandy <bandy.chris@gmail.com>
* Fixed typo on test case name for ParsePlistFile tests
Co-authored-by: Chris Bandy <bandy.chris@gmail.com>
* Linter fix in changelog
* go.sum updates after running make
* Used strings.Replacer instead of multiple strings.ReplaceAll calls
* Optimized implementation of charsToString
* Safer temporary file deletion with t.TempDir()
* Used t.Cleanup() for safer mocking of runtime providers in OS resource tests
* Handled optionality of DisplayVersion registry key.
For example, CI machine runs on:
Windows Server 2019 Datacenter (1809) [Version 10.0.17763.1999]
So, to not add an extra white space due to missing DisplayVersion,
this value is checked to be not empty, and only in such case a
trailing space is added for that component.
* Workaround to handle the case of DisplayVersion registry key not present
* Excluded unsupported GOOSes by negation of supported ones
* go.sum update after running make
Co-authored-by: Anthony Mirabella <a9@aneurysm9.com>
Co-authored-by: Robert Pająk <pellared@hotmail.com>
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
Co-authored-by: Chris Bandy <bandy.chris@gmail.com>
* add HTTP support for OTLP metrics exporter
* add to changelog
* fix unit test not covered before
* add otlpmetrichttp module to .github/dependabot.yml
* add test file for client.go
* run make commit to clean repository
* fix err occurs in TestCancelledContext
* fix err in TestCancelledContext which is nil
* fix err in TestCancelledContext which is nil, occurs occasionally
* fix unittest err in TestCancelledContext which occurs occasionally
* fix ineffectual assignment to err when running lint
* Update CHANGELOG.md
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Update exporters/otlp/otlpmetric/otlpmetrichttp/doc.go
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Update exporters/otlp/otlpmetric/otlpmetrichttp/doc.go
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* del options that not used in http exporter metrics
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Ensure that no-op tracer still progates non-recording spans
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Add `TracerProvider` to the `trace.Span` interface
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Remove config from oteltest.Tracer as it can be accessed through the provider
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Split stdout exporter into stdouttrace and stdoutmetric
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Remove unused options from stdouttrace and stdoutmetric exporters
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Update stdout exporter references in website docs
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Update docs to include correct import paths, properly describe exporter scope
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Remove pointless options to disable signals from what are now single-signal exporters
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Rename exporters/metric/prometheus
* Rename exporters/trace/jaeger
* Rename exporters/trace/zipkin
* Fix dependabot config and make test
* Update README docs
* Deprecate exporters instead of remove them
* Update dependabot with old modules
* Run crosslink
* Add lint override for known deprecated pkg
* Update PR number
* Remove trace export support from exporters/otlp
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Update otlp exporter example test to use metric/global package
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Update CHANGELOG
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* completely excise exporters/otlp
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Declare internal/metric module to version it separately
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Remove dependency on metrics module from soon-to-be-stable modules
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Add PR ID to CHANGELOG
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* rename metric/oteltest to metric/metrictest
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Fix metrictest package name in CHANGELOG
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
This implements specification requirement:
https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/resource/sdk.md#resource-creation
- Changes `resource.NewWithAttributes` to require a schema URL. The old function
is still available as `resource.NewSchemaless`. This is a breaking change.
We want to encourage using schema URL and make it a conscious choice to have a
resource without schema.
- Merge schema URLs acccording to the spec in resource.Merge.
- Several builtin resource detectors now correctly populate the schema URL.
Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
* Rename baggage context file
* Initial baggage implementation
* Initial tests
* More tests
* Update baggage context functionality
* Add New method to baggage pkg
* Update namedtracer example
* URL encode baggage values
* Refactor and use internal baggage pkg
* Update OpenTracing bridge
* Update baggage propagator
* Fix lint and test errors
* Add changes to changelog
* Apply suggestions from code review
* Rename testcase field per suggestion
* Update test to verify last-one-wins semantics
* Explicitly seed random numbers with static seed in tests
* Parse Member key/value with string split
* Add test for member parse with equal signs in value
* Trim whitespaces for member key/value
* sdk/resource: honor OTEL_SERVICE_NAME in fromEnv resource detector
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* go fmt is still my friend, even if I forget about it occasionally
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
* Fix import ordering
Signed-off-by: Anthony J Mirabella <a9@aneurysm9.com>
This adds support for schema URL to the Tracer according to the specification:
https://github.com/open-telemetry/opentelemetry-specification/pull/1666
(Link to replaced by the link to the spec after that PR is merged)
For the future: once the proto is updated we will need to populate the
schema_url field in the messages.
* Refactor TraceState
* Update tracecontext propagator to use new TraceState
* Add TraceStateFromKeyValues to oteltest
* Use oteltest to test TraceState
* Replace IsEmpty with Len for TraceState
* Replace ParseTraceState with ParseTraceStateString
* Clean up naming
* Add immutability test for TraceState
* Add changes to changelog
* Fixes
* Document argument type change in changelog
* Address feedback
Remove circularity of TestTraceStateLen.
