Module prometheus

Expand description

prom supply the prometheus HTTP API Server compliance

Macros§

try_call_return_response 🔒: Helper macro which try to evaluate the expression and return its results. If the evaluation fails, return a PrometheusJsonResponse early.

build_info_query
do_instant_query 🔒: Executes a single instant query and returns response
do_range_query 🔒: Executes a single range query and returns response
find_metric_name_and_matchers 🔒
find_metric_name_not_equal_matchers 🔒: Try to find the __name__ matchers which op is not MatchOp::Equal.
format_query
get_all_column_names 🔒: Get all tag column name of the given schema
get_catalog_schema 🔒: Tries to get catalog and schema from an optional db param. And retrieves them from QueryContext if they don’t present.
instant_query
label_values_query
labels_query
parse_query
promql_expr_to_metric_name 🔒
range_query
record_batches_to_labels_name 🔒: Retrieve labels name from record batches
record_batches_to_series 🔒
retrieve_field_names 🔒
retrieve_labels_name_from_query_result 🔒: Retrieve labels name from query result
retrieve_metric_name_and_result_type 🔒
retrieve_metric_name_from_promql 🔒: Try to parse and extract the name of referenced metric from the promql query.
retrieve_series_from_query_result 🔒
series_query
take_metric_name 🔒: Take metric name from the [VectorSelector]. It takes the name in the selector or removes the name matcher.
try_update_catalog_schema 🔒: Update catalog and schema in QueryContext if necessary.
update_metric_name_matcher 🔒: Update the __name__ matchers in expression into special value Returns the updated expression.