// Copyright 2018 The Prometheus Authors // 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. package collector import ( "context" "log/slog" _ "github.com/go-sql-driver/mysql" "github.com/prometheus/client_golang/prometheus" ) // Scraper is minimal interface that let's you add new prometheus metrics to mysqld_exporter. type Scraper interface { // Name of the Scraper. Should be unique. Name() string // Help describes the role of the Scraper. // Example: "Collect from SHOW ENGINE INNODB STATUS" Help() string // Version of MySQL from which scraper is available. Version() float64 // Scrape collects data from database connection and sends it over channel as prometheus metric. Scrape(ctx context.Context, instance *instance, ch chan<- prometheus.Metric, logger *slog.Logger) error }