7 Commits (bef872bf3cfb6bf9522e7c79cfda6ae84b4e59fc)

Author	SHA1	Message	Date
beorn7	5de2df752f	Hacky implementation of protobuf parsing ... This "brings back" protobuf parsing, with the only goal to play with the new sparse histograms. The Prom-2.x style parser is highly adapted to the structure of the Prometheus text format (and later OpenMetrics). Some jumping through hoops is required to feed protobuf into it. This is not meant to be a model for the final implementation. It should just enable sparse histogram ingestion at a reasonable efficiency. Following known shortcomings and flaws: - No tests yet. - Summaries and legacy histograms, i.e. without sparse buckets, are ignored. - Staleness doesn't work (but this could be fixed in the appender, to be discussed). - No tricks have been tried that would be similar to the tricks the text parsers do (like direct pointers into the HTTP response body). That makes things weird here. Tricky optimizations only make sense once the final format is specified, which will almost certainly not be the old protobuf format. (Interestingly, I expect this implementation to be in fact much more efficient than the original protobuf ingestion in Prom-1.x.) - This is using a proto3 version of metrics.proto (mostly to be consistent with the other protobuf uses). However, proto3 sees no difference between an unset field. We depend on that to distinguish between an unset timestamp and the timestamp 0 (1970-01-01, 00:00:00 UTC). In this experimental code, we just assume that timestamp is never specified and therefore a timestamp of 0 always is interpreted as "not set". Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Julien Pivotto	1282d1b39c	Refactor test assertions (#8110) ... * Refactor test assertions This pull request gets rid of assert.True where possible to use fine-grained assertions. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	4 years ago
shreyassrivatsan	e825282dd1	Add exemplar support to the openmetrics parser (#6292) ... * Add exemplar support to the openmetrics parser Signed-off-by: Shreyas Srivatsan <shreyas@chronosphere.io>	5 years ago
Brian Brazil	3fdb92010e	Expand OM to OpenMetrics ... Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>	6 years ago
Brian Brazil	9c03e11c2c	Hook OpenMetrics parser into scraping. ... Extend metadata api to support units. Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>	6 years ago
Brian Brazil	c271ef456a	Add an OpenMetrics parser. ... This is based on the existing parser, and has slightly better performance (few %) than it. Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>	6 years ago
Brian Brazil	ffe7efb411	Prepare for multiple text formats ... Pass content type down to text parser. Add layer of indirection in front of text parser, and rename to avoid future clashes. Signed-off-by: Brian Brazil <brian.brazil@robustperception.io>	6 years ago