diff options
Diffstat (limited to 'framework/src/onos/core/net/src/main/java/org/onosproject/cfg/impl/ConfigPropertyDefinitions.java')
-rw-r--r-- | framework/src/onos/core/net/src/main/java/org/onosproject/cfg/impl/ConfigPropertyDefinitions.java | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/cfg/impl/ConfigPropertyDefinitions.java b/framework/src/onos/core/net/src/main/java/org/onosproject/cfg/impl/ConfigPropertyDefinitions.java new file mode 100644 index 00000000..0f416c76 --- /dev/null +++ b/framework/src/onos/core/net/src/main/java/org/onosproject/cfg/impl/ConfigPropertyDefinitions.java @@ -0,0 +1,81 @@ +/* + * Copyright 2015 Open Networking Laboratory + * + * 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(); + } + +} |