promql/
metrics.rs

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// Copyright 2023 Greptime Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use lazy_static::lazy_static;
use prometheus::*;

lazy_static! {
    /// Counter for the number of series processed per query.
    pub static ref PROMQL_SERIES_COUNT: Histogram = register_histogram!(
        "greptime_promql_series_count",
        "promql series count",
        exponential_buckets(10.0, 10.0, 8).unwrap(),
    ).unwrap();
}