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feat: add MetricsQL range functions #6

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Merged
milindsrivastava1997 merged 1 commit into from
Sep 10, 2026
Merged

feat: add MetricsQL range functions #6

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25 changes: 24 additions & 1 deletion src/parser/function.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -247,7 +247,23 @@ lazy_static! {
ValueType::Vector,
false
),
// MetricsQL extension.
function!(
"distinct_over_time",
vec![ValueType::Matrix],
0,
ValueType::Vector,
false
),
function!("end", vec![], 0, ValueType::Scalar, true),
// MetricsQL extension.
function!(
"entropy_over_time",
vec![ValueType::Matrix],
0,
ValueType::Vector,
false
),
function!("exp", vec![ValueType::Vector], 0, ValueType::Vector, false),
function!(
"first_over_time",
Expand Down Expand Up @@ -668,13 +684,20 @@ mod tests {
let rate = get_function("rate").unwrap();
assert_eq!(rate.variadic, 0);
assert!(!rate.experimental);

for func_name in ["max_of", "min_of"] {
let func = get_function(func_name).unwrap();
assert_eq!(func.arg_types, vec![ValueType::Scalar, ValueType::Scalar]);
assert_eq!(func.variadic, 0);
assert_eq!(func.return_type, ValueType::Scalar);
assert!(func.experimental);
}

for func_name in ["distinct_over_time", "entropy_over_time"] {
let func = get_function(func_name).unwrap();
assert_eq!(func.arg_types, vec![ValueType::Matrix]);
assert_eq!(func.variadic, 0);
assert_eq!(func.return_type, ValueType::Vector);
assert!(!func.experimental);
}
}
}
24 changes: 24 additions & 0 deletions src/parser/parse.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1345,6 +1345,30 @@ mod tests {
Expr::new_call(get_function("rate").unwrap(), FunctionArgs::new_args(ex))
})
}),
("distinct_over_time(some_metric[5m])", {
Expr::new_matrix_selector(
Expr::from(VectorSelector::from("some_metric")),
duration::MINUTE_DURATION * 5,
)
.and_then(|ex| {
Expr::new_call(
get_function("distinct_over_time").unwrap(),
FunctionArgs::new_args(ex),
)
})
}),
("entropy_over_time(some_metric[5m])", {
Expr::new_matrix_selector(
Expr::from(VectorSelector::from("some_metric")),
duration::MINUTE_DURATION * 5,
)
.and_then(|ex| {
Expr::new_call(
get_function("entropy_over_time").unwrap(),
FunctionArgs::new_args(ex),
)
})
}),
("round(some_metric)", {
let ex = Expr::from(VectorSelector::from("some_metric"));
Expr::new_call(get_function("round").unwrap(), FunctionArgs::new_args(ex))
Expand Down
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