* Do not allow unquoted escape sequences
This commit updates the matchers parser to reject unquoted
openmetrics escape sequences. As an example, foo=bar\n
will no longer parse, and must instead be written as
foo="bar\n". This avoids an issue where the input is valid
in both the matchers and classic parsers, but results
in two different parsings.
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Signed-off-by: George Robinson <george.robinson@grafana.com>
* Update compliance tests
This commit updates compliance tests to include openmetrics
escape sequences that are not valid in the UTF-8 matchers parser.
Signed-off-by: George Robinson <george.robinson@grafana.com>
* Add tests for openmetrics escape sequences
Signed-off-by: George Robinson <george.robinson@grafana.com>
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Signed-off-by: George Robinson <george.robinson@grafana.com>
* Add label matchers parser
This commit adds the new label matchers parser as proposed in #3353.
Included is a number of compliance tests comparing the grammar
supported in the new parser with the existing parser in pkg/labels.
Signed-off-by: George Robinson <george.robinson@grafana.com>
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Signed-off-by: George Robinson <george.robinson@grafana.com>
George Robinson