Java tutorial
/** * Copyright (c) 2015 Intel Corporation * * 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.trustedanalytics.servicebroker.gearpump.service.externals.helpers; import org.springframework.stereotype.Service; import java.io.IOException; import java.nio.charset.Charset; import java.nio.charset.StandardCharsets; import java.nio.file.Files; import java.nio.file.Path; import java.util.regex.Matcher; import java.util.regex.Pattern; @Service public class ConfigParser { private static final Pattern MASTERS_PATTERN = Pattern.compile("hdfsRoot = \"(.*?)\""); private static final String REPLACEMENT_TEMPLATE = "hdfsRoot = \"%s%s\""; private static final Charset CHARSET = StandardCharsets.UTF_8; public String ensureProperConfigFolder(String input, String provisionedFolder, String hdfsDirectory) { Matcher m = MASTERS_PATTERN.matcher(input); String replacement = String.format(REPLACEMENT_TEMPLATE, provisionedFolder, hdfsDirectory); return m.replaceAll(replacement); } public void overwriteFile(Path path, String content) throws IOException { Files.write(path, content.getBytes(CHARSET)); } }