package com.github.gquintana.metrics.sql; /* * #%L * Metrics SQL * %% * Copyright (C) 2014 Open-Source * %% * 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. * #L% */ import com.codahale.metrics.MetricRegistry; import com.codahale.metrics.Timer; /** * Start {@link com.codahale.metrics.Timer}s and increments {@link com.codahale.metrics.Meter}s * Internal helper class. */ class MetricHelper { private final MetricRegistry metricRegistry; private final MetricNamingStrategy metricNamingStrategy; /** * Constructor * @param metricRegistry Registry storing metrics * @param metricNamingStrategy Strategy to name metrics */ MetricHelper(MetricRegistry metricRegistry, MetricNamingStrategy metricNamingStrategy) { this.metricRegistry = metricRegistry; this.metricNamingStrategy = metricNamingStrategy; } private Timer.Context startTimer(String name) { if (name == null) { return null; } return metricRegistry.timer(name).time(); } private void markMeter(String name) { if (name == null) { return; } metricRegistry.meter(name).mark(); } public Timer.Context startConnectionLifeTimer() { return startTimer(metricNamingStrategy.getConnectionLifeTimer()); } public Timer.Context startConnectionGetTimer() { return startTimer(metricNamingStrategy.getConnectionGetTimer()); } /** * Start Timer when statement is created * * @return Started timer context or null */ public Timer.Context startStatementLifeTimer() { return startTimer(metricNamingStrategy.getStatementLifeTimer()); } /** * Start Timer when statement is executed * * @param query SQL query * @return Started timer context or null */ public Timer.Context startStatementExecuteTimer(Query query) { ensureSqlId(query); String name = metricNamingStrategy.getStatementExecuteTimer(query.getSql(), query.getSqlId()); return startTimer(name); } private void ensureSqlId(Query query) { query.ensureSqlId(metricNamingStrategy); } /** * Start Timer when prepared statement is created * * @return Started timer context or null */ public Timer.Context startPreparedStatementLifeTimer(Query query) { ensureSqlId(query); String name = metricNamingStrategy.getPreparedStatementLifeTimer(query.getSql(), query.getSqlId()); return startTimer(name); } /** * Start Timer when prepared statement is created * * @return Started timer context or null */ public Timer.Context startPreparedStatementExecuteTimer(Query query) { ensureSqlId(query); String name = metricNamingStrategy.getPreparedStatementExecuteTimer(query.getSql(), query.getSqlId()); return startTimer(name); } private String getSqlId(String sqlId, String sql) { if (sqlId == null) { sqlId = metricNamingStrategy.getSqlId(sql); } return sqlId; } /** * Start Timer when callable statement is created * * @return Started timer context or null */ public Timer.Context startCallableStatementLifeTimer(Query query) { ensureSqlId(query); String name = metricNamingStrategy.getCallableStatementLifeTimer(query.getSql(), query.getSqlId()); return startTimer(name); } /** * Start Timer when prepared statement is created * * @return Started timer context or null */ public Timer.Context startCallableStatementExecuteTimer(Query query) { ensureSqlId(query); String name = metricNamingStrategy.getCallableStatementExecuteTimer(query.getSql(), query.getSqlId()); return startTimer(name); } /** * Start Timer when result set is created * * @return Started timer context or null */ public Timer.Context startResultSetLifeTimer(Query query) { ensureSqlId(query); String name = metricNamingStrategy.getResultSetLifeTimer(query.getSql(), query.getSqlId()); return startTimer(name); } /** * Increment when result set row is read */ public void markResultSetRowMeter(Query query) { ensureSqlId(query); String name = metricNamingStrategy.getResultSetRowMeter(query.getSql(), query.getSqlId()); markMeter(name); } }