…on span creation (#4417)

* fix(sdk-trace-base): ensure attribute value length limit is enforced on span creation

* fix(changelog): add changelog entry

* feat(api): add experimental package and SugaredTracer

* tests(api/experimental): add tests

* fix: packages.json exports

* move export into experimental package

* add additional tests

* fix: do not use catch and finally for compatibility with Node 8

---------

Co-authored-by: Chengzhong Wu <legendecas@gmail.com>

…4320)

* chore(opentelemetry-context-zone-peer-dep):
update deps to support angular 16
closes issue #4245

Signed-off-by: rbrennan <4884521+rodgerbrennan@users.noreply.github.com>

* update packages

* Revert "update packages"

This reverts commit 624df4e.

* chore: sync package-lock.json

* chore: sync package-lock.json

* chore: sync package-lock.json

* Update ZoneContextManager.test to use ES5 UMD bundle

* add changelog

* remove trailing space from changelog

---------

Signed-off-by: rbrennan <4884521+rodgerbrennan@users.noreply.github.com>
Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>

* fix(core): drop unnecessary assignemnt of HOSTNAME

* fix(changelog): add changelog entry

* Update CHANGELOG.md

* fix(changelog): move entry to internal

… of 'readers' constructor option (#4427)

* feat(sdk-metrics): add 'readers' constructor option, deprecate MeterProvider.addMetricReader()

* fix(changelog): update changelog entry, fix format

)

* fix(sdk-trace-base): Export processed spans while exporter failed

While the exporter deals with a batch of spans, new spans may come in and wait
to be exported. As previously implemented, a successful export would notice
these waiting spans, triggering a renewed timer check, but not so for an
unsuccessful export.

The result was that, prior to this commit, a failing export may end up in a
situation where no further spans will be exported. This is due to the behaviour
of `_addToBuffer` when the queue is full: Imagine an export which fails after a
long timeout (because of, for instance, network troubles). While the connection
waits to be timed out, the span queue fills up. Once completely full, no new
calls to recheck the timer will be done. On its own, this behaviour is
fine. When combined with the patched bug, this leads to a rather confusing case
where the exporter never tries exporting.

* fix(changelog): add entry

---------

Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>

* fix(instrumentation): pin import-in-the-middle@1.7.1

* fix(changelog): add changlog entry

* Update experimental/CHANGELOG.md

Co-authored-by: Trent Mick <trentm@gmail.com>

* fix(changelog): additional details

* fix(changelog): formatting

* fix(changelog): lint

---------

Co-authored-by: Trent Mick <trentm@gmail.com>

* fix(exporter-logs-otlp-grpc): set User-Agent header

* fix(exporter-logs-otlp-http): set User-Agent header

* fix(exporter-logs-otlp-proto): set User-Agent header

* chore(changelog): update changelog

---------

Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>

* refactor(exporter-prometheus): promisify prometheus tests

* fix: lint

---------

Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>

* docs: add observableGauge to the prometheus experimental example

Signed-off-by: Francois LP <francois.le.pape@gmail.com>

* docs: add gauge image to README

Signed-off-by: Francois LP <francois.le.pape@gmail.com>

* refactor: change comment wording

from @pichlermarc

Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>

---------

Signed-off-by: Francois LP <francois.le.pape@gmail.com>
Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>
Co-authored-by: Daniel Dyla <dyladan@users.noreply.github.com>

… headers with fetch (#4348)

* fix(@opentelemetry-instrumentation-fetch): compatibility with Map inputs for request headers with fetch

* Update experimental/CHANGELOG.md

Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>

* adding description for ts-ignore

* fix(changlog): move entry to unreleased

* fix: add lint ignore

---------

Co-authored-by: Marc Pichler <marc.pichler@dynatrace.com>

* chore: prepare release 1.21.0/0.48.0

* chore: sync package-lock.json