| /* |
| * 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.internal.metrics.exporters; |
| |
| import org.apache.ignite.internal.metrics.MetricManagerImpl; |
| import org.apache.ignite.internal.metrics.MetricProvider; |
| import org.apache.ignite.internal.metrics.MetricSet; |
| import org.apache.ignite.internal.metrics.exporters.configuration.ExporterConfiguration; |
| import org.apache.ignite.internal.metrics.exporters.configuration.ExporterView; |
| |
| /** |
| * Interface for metric exporters to external recipients. |
| * Exporters can be one of the two type: push and pull exporters. |
| * |
| * <p>Push exporters push metrics to the external endpoint periodically. |
| * Push exporters should implement {@link PushMetricExporter} according to its documentation. |
| * |
| * <p>Pull exporters is the endpoint by itself (HTTP, JMX and etc.), which response with the metric data for request. |
| * Pull exporters should extend {@link BasicMetricExporter}. |
| */ |
| public interface MetricExporter<CfgT extends ExporterView> { |
| /** |
| * Start metrics exporter. Here all needed listeners, schedulers etc. should be started. |
| * |
| * @param metricProvider Provider of metric sources. |
| * @param configuration Exporter configuration view. |
| */ |
| void start(MetricProvider metricProvider, CfgT configuration); |
| |
| /** |
| * Stop and cleanup work for current exporter must be implemented here. |
| */ |
| void stop(); |
| |
| /** |
| * Returns the name of exporter. Name must be unique and be the same for exporter and its {@link ExporterConfiguration}. |
| * |
| * @return Name of the exporter. |
| */ |
| String name(); |
| |
| /** |
| * Invokes, when exporter's configuration was updated. |
| * |
| * <p>Be careful: this method will be invoked from the separate configuration events' thread pool. |
| * Appropriate thread-safe logic falls on the shoulders of implementations. |
| * |
| * @param newValue New configuration view. |
| */ |
| void reconfigure(CfgT newValue); |
| |
| /** |
| * {@link MetricManagerImpl} invokes this method, |
| * when new metric source was enabled. |
| * |
| * @param metricSet Named metric set. |
| */ |
| void addMetricSet(MetricSet metricSet); |
| |
| /** |
| * {@link MetricManagerImpl} invokes this method, |
| * when the metric source was disabled. |
| * |
| * @param metricSetName Name of metric set to remove. |
| */ |
| void removeMetricSet(String metricSetName); |
| } |