| /* |
| * Copyright 2015-present Open Networking Foundation |
| * |
| * 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. |
| */ |
| package org.onosproject.cfg.impl; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.onosproject.cfg.ConfigProperty; |
| import org.onosproject.cfg.ConfigProperty.Type; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.OutputStream; |
| import java.io.OutputStreamWriter; |
| import java.io.PrintWriter; |
| import java.util.Set; |
| |
| import static org.onosproject.cfg.ConfigProperty.defineProperty; |
| |
| /** |
| * Utility for writing and reading configuration property definition file. |
| */ |
| public final class ConfigPropertyDefinitions { |
| |
| private static final String FMT = "%s|%s|%s|%s\n"; |
| private static final String SEP = "\\|"; |
| private static final String COMMENT = "#"; |
| |
| private ConfigPropertyDefinitions() { |
| } |
| |
| /** |
| * Writes the specified set of property definitions into the given output |
| * stream. |
| * |
| * @param stream output stream |
| * @param props properties whose definitions are to be written |
| * @throws java.io.IOException if unable to write the stream |
| */ |
| public static void write(OutputStream stream, Set<ConfigProperty> props) throws IOException { |
| try (PrintWriter pw = new PrintWriter(new OutputStreamWriter(stream))) { |
| props.forEach(p -> pw.format(FMT, p.name(), p.type(), p.description(), p.defaultValue())); |
| } |
| } |
| |
| /** |
| * Reads the specified input stream and creates from its contents a |
| * set of property definitions. |
| * |
| * @param stream input stream |
| * @return properties whose definitions are contained in the stream |
| * @throws java.io.IOException if unable to read the stream |
| */ |
| public static Set<ConfigProperty> read(InputStream stream) throws IOException { |
| ImmutableSet.Builder<ConfigProperty> builder = ImmutableSet.builder(); |
| try (BufferedReader br = new BufferedReader(new InputStreamReader(stream))) { |
| String line; |
| while ((line = br.readLine()) != null) { |
| if (!line.isEmpty() && !line.startsWith(COMMENT)) { |
| String[] f = line.split(SEP, 4); |
| builder.add(defineProperty(f[0], Type.valueOf(f[1]), f[2], f[3])); |
| } |
| } |
| } |
| return builder.build(); |
| } |
| |
| } |