| /* |
| * 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.cassandra.db.virtual; |
| |
| import java.util.Arrays; |
| |
| import org.apache.cassandra.config.CassandraRelevantEnv; |
| import org.apache.cassandra.config.CassandraRelevantProperties; |
| import org.apache.cassandra.config.Config; |
| import org.apache.cassandra.db.DecoratedKey; |
| import org.apache.cassandra.db.marshal.*; |
| import org.apache.cassandra.dht.LocalPartitioner; |
| import org.apache.cassandra.schema.TableMetadata; |
| |
| final class SystemPropertiesTable extends AbstractVirtualTable |
| { |
| private static final String NAME = "name"; |
| private static final String VALUE = "value"; |
| |
| SystemPropertiesTable(String keyspace) |
| { |
| super(TableMetadata.builder(keyspace, "system_properties") |
| .comment("Cassandra relevant system properties") |
| .kind(TableMetadata.Kind.VIRTUAL) |
| .partitioner(new LocalPartitioner(UTF8Type.instance)) |
| .addPartitionKeyColumn(NAME, UTF8Type.instance) |
| .addRegularColumn(VALUE, UTF8Type.instance) |
| .build()); |
| } |
| |
| public DataSet data() |
| { |
| SimpleDataSet result = new SimpleDataSet(metadata()); |
| |
| System.getenv().keySet() |
| .stream() |
| .filter(SystemPropertiesTable::isCassandraRelevant) |
| .forEach(name -> addRow(result, name, System.getenv(name))); |
| |
| System.getProperties().stringPropertyNames() |
| .stream() |
| .filter(SystemPropertiesTable::isCassandraRelevant) |
| .forEach(name -> addRow(result, name, System.getProperty(name))); |
| |
| return result; |
| } |
| |
| @Override |
| public DataSet data(DecoratedKey partitionKey) |
| { |
| SimpleDataSet result = new SimpleDataSet(metadata()); |
| String name = UTF8Type.instance.compose(partitionKey.getKey()); |
| if (isCassandraRelevant(name)) |
| addRow(result, name, System.getProperty(name, System.getenv(name))); |
| |
| return result; |
| } |
| |
| static boolean isCassandraRelevant(String name) |
| { |
| return name.startsWith(Config.PROPERTY_PREFIX) |
| || Arrays.stream(CassandraRelevantProperties.values()).anyMatch(p -> p.getKey().equals(name)) |
| || Arrays.stream(CassandraRelevantEnv.values()).anyMatch(p -> p.getKey().equals(name)); |
| } |
| |
| private static void addRow(SimpleDataSet result, String name, String value) |
| { |
| result.row(name).column(VALUE, value); |
| } |
| } |