* Rename feature flags and make package public
This commit renames the feature flags "classic-matchers-parsing"
and "utf8-matchers-parsing" to "classic-matchers" and "utf8-matchers".
This better represents their use, for example, when validating
both alerts and silences created via the API.
It also makes the feature flags package public for two reasons:
1. AllowedFlags is a public variable
2. We would rather use these consts in Mimir then have to hardcode
the strings ourselves, and be subject to breaking changes in future
Signed-off-by: George Robinson <george.robinson@grafana.com>
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Signed-off-by: George Robinson <george.robinson@grafana.com>
Quoted tokens can contain both UTF-8 byte and code point literals
that should be interpreted when quoted. However, we need to check
that the interpreted literals are valid UTF-8 code points or not.
This now happens in unquote.
Signed-off-by: George Robinson <george.robinson@grafana.com>
This commit removes the open and close braces from the suggestion
as braces do not make sense in the configuration file. This does
not change the behavior of the suggestion whatsoever as these
are optional.
Signed-off-by: George Robinson <george.robinson@grafana.com>
* 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 adapter package for parser feature flag
This commit adds the compat package allowing users to switch
between the new matchers/parse parser and the old pkg/labels parser.
The new matchers/parse parser uses a fallback mechanism where if
the input cannot be parsed in the new parser it then attempts to
use the old parser. If an input is parsed in the old parser but
not the new parser, then a warning log is emitted.
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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