[GitHub] storm pull request #1642: STORM-2018: Supervisor V2.

[kishorvpatil <gi...@git.apache.org>]

Github user kishorvpatil commented on a diff in the pull request:

    https://github.com/apache/storm/pull/1642#discussion_r76637435
  
    --- Diff: storm-core/src/jvm/org/apache/storm/daemon/supervisor/AdvancedFSOps.java ---
    @@ -0,0 +1,313 @@
    +/**
    + * 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.storm.daemon.supervisor;
    +
    +import java.io.File;
    +import java.io.FileNotFoundException;
    +import java.io.FileWriter;
    +import java.io.IOException;
    +import java.io.Writer;
    +import java.nio.file.FileSystems;
    +import java.nio.file.Files;
    +import java.nio.file.Path;
    +import java.nio.file.StandardCopyOption;
    +import java.nio.file.attribute.PosixFilePermission;
    +import java.util.ArrayList;
    +import java.util.Arrays;
    +import java.util.HashSet;
    +import java.util.List;
    +import java.util.Map;
    +import java.util.Set;
    +
    +import org.apache.commons.io.FileUtils;
    +import org.apache.storm.Config;
    +import org.apache.storm.utils.Utils;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +
    +public class AdvancedFSOps {
    +    private static final Logger LOG = LoggerFactory.getLogger(AdvancedFSOps.class);
    +    
    +    /**
    +     * Factory to create a new AdvancedFSOps
    +     * @param conf the configuration of the process
    +     * @return the appropriate instance of the class for this config and environment.
    +     */
    +    public static AdvancedFSOps make(Map<String, Object> conf) {
    +        if (Utils.isOnWindows()) {
    +            return new AdvancedWindowsFSOps(conf);
    +        }
    +        if (Utils.getBoolean(conf.get(Config.SUPERVISOR_RUN_WORKER_AS_USER), false)) {
    +            return new AdvancedRunAsUserFSOps(conf);
    +        }
    +        return new AdvancedFSOps();
    +    }
    +    
    +    private static class AdvancedRunAsUserFSOps extends AdvancedFSOps {
    +        private final Map<String, Object> _conf;
    +        
    +        public AdvancedRunAsUserFSOps(Map<String, Object> conf) {
    +            if (Utils.isOnWindows()) {
    +                throw new UnsupportedOperationException("ERROR: Windows doesn't support running workers as different users yet");
    +            }
    +            _conf = conf;
    +        }
    +        
    +        @Override
    +        public void setupBlobPermissions(File path, String user) throws IOException {
    +            String logPrefix = "setup blob permissions for " + path;
    +            SupervisorUtils.processLauncherAndWait(_conf, user, Arrays.asList("blob", path.toString()), null, logPrefix);
    +        }
    +        
    +        @Override
    +        public void deleteIfExists(File path, String user, String logPrefix) throws IOException {
    +            String absolutePath = path.getAbsolutePath();
    +            LOG.debug("Deleting path {}", absolutePath);
    --- End diff --
    
    This can probably be info level.


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