promql/
metrics.rs

1// Copyright 2023 Greptime Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use lazy_static::lazy_static;
16use prometheus::*;
17
18lazy_static! {
19    /// Counter for the number of series processed per query.
20    pub static ref PROMQL_SERIES_COUNT: Histogram = register_histogram!(
21        "greptime_promql_series_count",
22        "promql series count",
23        exponential_buckets(10.0, 10.0, 8).unwrap(),
24    ).unwrap();
25}