| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.ignite.spi.metric.sql; |
| |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.function.Predicate; |
| import org.apache.ignite.internal.GridKernalContext; |
| import org.apache.ignite.internal.processors.query.h2.sys.view.SqlAbstractLocalSystemView; |
| import org.apache.ignite.spi.metric.Metric; |
| import org.apache.ignite.spi.metric.ReadOnlyMetricManager; |
| import org.apache.ignite.spi.metric.ReadOnlyMetricRegistry; |
| import org.h2.engine.Session; |
| import org.h2.result.Row; |
| import org.h2.result.SearchRow; |
| import org.h2.value.Value; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * Sql view for exporting metrics. |
| */ |
| public class MetricRegistryLocalSystemView extends SqlAbstractLocalSystemView { |
| /** Metric registry. */ |
| private ReadOnlyMetricManager mreg; |
| |
| /** Metric filter. */ |
| private @Nullable Predicate<ReadOnlyMetricRegistry> filter; |
| |
| /** |
| * @param ctx Context. |
| * @param mreg Metric registry. |
| * @param filter Metric registry filter. |
| */ |
| public MetricRegistryLocalSystemView(GridKernalContext ctx, ReadOnlyMetricManager mreg, |
| @Nullable Predicate<ReadOnlyMetricRegistry> filter) { |
| super(SqlViewMetricExporterSpi.SYS_VIEW_NAME, "Ignite metrics", |
| ctx, |
| newColumn("NAME", Value.STRING), |
| newColumn("VALUE", Value.STRING), |
| newColumn("DESCRIPTION", Value.STRING)); |
| |
| this.mreg = mreg; |
| this.filter = filter; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public Iterator<Row> getRows(Session ses, SearchRow first, SearchRow last) { |
| return new Iterator<Row>() { |
| /** */ |
| private Iterator<ReadOnlyMetricRegistry> grps = mreg.iterator(); |
| |
| /** */ |
| private Iterator<Metric> curr = Collections.emptyIterator(); |
| |
| /** */ |
| private boolean advance() { |
| while (grps.hasNext()) { |
| ReadOnlyMetricRegistry mreg = grps.next(); |
| |
| if (filter != null && !filter.test(mreg)) |
| continue; |
| |
| curr = mreg.iterator(); |
| |
| if (curr.hasNext()) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public boolean hasNext() { |
| if (curr.hasNext()) |
| return true; |
| |
| return advance(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override public Row next() { |
| Metric m = curr.next(); |
| |
| return createRow(ses, m.name(), m.getAsString(), m.description()); |
| } |
| }; |
| } |
| } |