Define syntax for escaping declarative config env var substitution #4375
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Resolves #3914.
An environment variable substitution reference which starts with
$$
(i.e.$${API_KEY}
) is escaped. Implementations should strip the leading$
character and not perform substitution (i.e.$${API_KEY} => ${API_KEY}
).See java implementation here: open-telemetry/opentelemetry-java#7033