io.bitgrillr.gocddockerexecplugin.SystemHelper.java Source code

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Here is the source code for io.bitgrillr.gocddockerexecplugin.SystemHelper.java

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/**
 * Copyright 2018 Christopher Arnold <cma.arnold@gmail.com> and contributors.
 *
 * 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 io.bitgrillr.gocddockerexecplugin;

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;

class SystemHelper {

    private SystemHelper() {
    }

    static String getSystemUid() throws IOException, InterruptedException {
        Process id = Runtime.getRuntime().exec(new String[] { "bash", "-c", "echo \"$(id -u):$(id -g)\"" });
        id.waitFor();
        return StringUtils.chomp(IOUtils.toString(id.getInputStream(), StandardCharsets.UTF_8));
    }

}