Add Regular Expression Parser to Carbon Receiver #129
Merged
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Adding a parser to Carbon receiver that allows extracting label keys and values from the metric "path" on the Carbon format. This is useful to break hierarchical path names used in Carbon to label keys and values while also allowing renaming the metrics.
Refactored the plaintext parser so the code handling the Carbon "line" was shared between the parsers that only treat the "metric path" differently - no changes to that code it was just moved to its own type.