| /* |
| * 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 |
| * |
| * https://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.accumulo.server.metrics; |
| |
| import static org.apache.accumulo.core.conf.Property.GENERAL_ARBITRARY_PROP_PREFIX; |
| import static org.apache.accumulo.core.spi.metrics.MeterRegistryFactory.METRICS_PROP_SUBSTRING; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.accumulo.core.spi.common.ServiceEnvironment; |
| import org.apache.accumulo.core.spi.metrics.MeterRegistryFactory; |
| import org.apache.accumulo.server.ServerContext; |
| import org.apache.accumulo.server.ServiceEnvironmentImpl; |
| |
| /** |
| * Provides a way to pass parameters from an Accumulo configuration to the MeterRegistryFactory. |
| * Properties need have the form {@code general.custom.metrics.opts.PARAMETER_NAME = VALUE}. The |
| * prefix {@code general.custom.metrics.opts.} is stripped and the resulting Map returned by |
| * {@link #getOptions()} will be map of {@code PROPERTY_NAME, VALUE} key value pairs. |
| * <p> |
| * Other implementations can extend |
| * {@link org.apache.accumulo.core.spi.metrics.MeterRegistryFactory.InitParameters} to provide other |
| * implementations |
| */ |
| public class MeterRegistryEnvPropImpl implements MeterRegistryFactory.InitParameters { |
| |
| private final ServerContext context; |
| |
| public MeterRegistryEnvPropImpl(final ServerContext context) { |
| this.context = context; |
| } |
| |
| /** |
| * Properties that match {@code general.custom.metrics.opts.PARAMETER_NAME = VALUE} with be |
| * filtered and returned with the prefix stripped. |
| * |
| * @return a map of the filtered, stripped property, value pairs. |
| */ |
| @Override |
| public Map<String,String> getOptions() { |
| Map<String,String> filtered = new HashMap<>(); |
| |
| Map<String,String> options = context.getConfiguration() |
| .getAllPropertiesWithPrefixStripped(GENERAL_ARBITRARY_PROP_PREFIX); |
| options.forEach((k, v) -> { |
| if (k.startsWith(METRICS_PROP_SUBSTRING)) { |
| String name = k.substring(METRICS_PROP_SUBSTRING.length()); |
| filtered.put(name, v); |
| } |
| }); |
| return filtered; |
| } |
| |
| @Override |
| public ServiceEnvironment getServiceEnv() { |
| return new ServiceEnvironmentImpl(context); |
| } |
| } |