* Export query itself together with queryId in stat_statement metrics
* The feature must be enabled via flag.
* Limit length of selected query.
The query is not added to every metrics, but instead of new metric stat_statement_query_id is introduced that contains mapping between queryId and query.
Fixes: #813
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Signed-off-by: Jakub Štiller <stiller@2n.cz>
Signed-off-by: Jakub Štiller <jakstiller@atlas.cz>
The intent is to use the instance struct to hold the connection to the database as well as metadata about the instance. Currently this metadata only includes the version of postgres for the instance which can be used in the collectors to decide what query to run. In the future this could hold more metadata but for now it keeps the Collector interface arguments to a reasonable number.
Signed-off-by: Joe Adams <github@joeadams.io>
