| // |
| // 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.cloudstack.storage; |
| |
| import java.io.BufferedReader; |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.nio.file.Files; |
| import java.nio.file.Paths; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| import javax.annotation.PreDestroy; |
| |
| import com.cloud.storage.StorageLayer; |
| import com.cloud.utils.exception.CloudRuntimeException; |
| import com.cloud.utils.script.OutputInterpreter; |
| import com.cloud.utils.script.Script; |
| import org.apache.cloudstack.framework.config.ConfigKey; |
| import org.apache.cloudstack.utils.identity.ManagementServerNode; |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.LogManager; |
| import org.springframework.stereotype.Component; |
| |
| @Component |
| public class NfsMountManagerImpl implements NfsMountManager { |
| protected Logger logger = LogManager.getLogger(getClass()); |
| |
| private StorageLayer storage; |
| private int timeout; |
| private final Random rand = new Random(System.currentTimeMillis()); |
| private final ConcurrentMap<String, String> storageMounts = new ConcurrentHashMap<>(); |
| |
| public static final ConfigKey<String> MOUNT_PARENT = new ConfigKey<>("Advanced", String.class, |
| "mount.parent", "/var/cloudstack/mnt", |
| "The mount point on the Management Server for Secondary Storage.", |
| true, ConfigKey.Scope.Global); |
| |
| public NfsMountManagerImpl(StorageLayer storage, int timeout) { |
| this.storage = storage; |
| this.timeout = timeout; |
| } |
| |
| public String getMountPoint(String storageUrl, String nfsVersion) { |
| String mountPoint = storageMounts.get(storageUrl); |
| if (mountPoint != null) { |
| return mountPoint; |
| } |
| |
| URI uri; |
| try { |
| uri = new URI(storageUrl); |
| } catch (URISyntaxException e) { |
| logger.error("Invalid storage URL format ", e); |
| throw new CloudRuntimeException("Unable to create mount point due to invalid storage URL format " + storageUrl); |
| } |
| |
| mountPoint = mount(uri.getHost() + ":" + uri.getPath(), MOUNT_PARENT.value(), nfsVersion); |
| if (mountPoint == null) { |
| logger.error("Unable to create mount point for " + storageUrl); |
| throw new CloudRuntimeException("Unable to create mount point for " + storageUrl); |
| } |
| |
| storageMounts.putIfAbsent(storageUrl, mountPoint); |
| return mountPoint; |
| } |
| |
| private String mount(String path, String parent, String nfsVersion) { |
| String mountPoint = setupMountPoint(parent); |
| if (mountPoint == null) { |
| logger.warn("Unable to create a mount point"); |
| return null; |
| } |
| |
| Script command = new Script(true, "mount", timeout, logger); |
| command.add("-t", "nfs"); |
| if (nfsVersion != null){ |
| command.add("-o", "vers=" + nfsVersion); |
| } |
| // command.add("-o", "soft,timeo=133,retrans=2147483647,tcp,acdirmax=0,acdirmin=0"); |
| if ("Mac OS X".equalsIgnoreCase(System.getProperty("os.name"))) { |
| command.add("-o", "resvport"); |
| } |
| command.add(path); |
| command.add(mountPoint); |
| String result = command.execute(); |
| if (result != null) { |
| logger.warn("Unable to mount " + path + " due to " + result); |
| deleteMountPath(mountPoint); |
| return null; |
| } |
| |
| // Change permissions for the mountpoint |
| Script script = new Script(true, "chmod", timeout, logger); |
| script.add("1777", mountPoint); |
| result = script.execute(); |
| if (result != null) { |
| logger.warn("Unable to set permissions for " + mountPoint + " due to " + result); |
| } |
| return mountPoint; |
| } |
| |
| private String setupMountPoint(String parent) { |
| String mountPoint = null; |
| for (int i = 0; i < 10; i++) { |
| String mntPt = parent + File.separator + String.valueOf(ManagementServerNode.getManagementServerId()) + "." + Integer.toHexString(rand.nextInt(Integer.MAX_VALUE)); |
| File file = new File(mntPt); |
| if (!file.exists()) { |
| if (storage.mkdir(mntPt)) { |
| mountPoint = mntPt; |
| break; |
| } |
| } |
| logger.error("Unable to create mount: " + mntPt); |
| } |
| |
| return mountPoint; |
| } |
| |
| private void umount(String localRootPath) { |
| if (!mountExists(localRootPath)) { |
| return; |
| } |
| Script command = new Script(true, "umount", timeout, logger); |
| command.add(localRootPath); |
| String result = command.execute(); |
| if (result != null) { |
| // Fedora Core 12 errors out with any -o option executed from java |
| String errMsg = "Unable to umount " + localRootPath + " due to " + result; |
| logger.error(errMsg); |
| throw new CloudRuntimeException(errMsg); |
| } |
| deleteMountPath(localRootPath); |
| logger.debug("Successfully umounted " + localRootPath); |
| } |
| |
| private void deleteMountPath(String localRootPath) { |
| try { |
| Files.deleteIfExists(Paths.get(localRootPath)); |
| } catch (IOException e) { |
| logger.warn(String.format("unable to delete mount directory %s:%s.%n", localRootPath, e.getMessage())); |
| } |
| } |
| |
| private boolean mountExists(String localRootPath) { |
| Script script = new Script(true, "mount", timeout, logger); |
| PathParser parser = new PathParser(localRootPath); |
| script.execute(parser); |
| return parser.getPaths().stream().filter(s -> s.contains(localRootPath)).findAny().map(s -> true).orElse(false); |
| } |
| |
| public static class PathParser extends OutputInterpreter { |
| String _parent; |
| List<String> paths = new ArrayList<>(); |
| |
| public PathParser(String parent) { |
| _parent = parent; |
| } |
| |
| @Override |
| public String interpret(BufferedReader reader) throws IOException { |
| String line; |
| while ((line = reader.readLine()) != null) { |
| paths.add(line); |
| } |
| return null; |
| } |
| |
| public List<String> getPaths() { |
| return paths; |
| } |
| |
| @Override |
| public boolean drain() { |
| return true; |
| } |
| } |
| |
| @PreDestroy |
| public void destroy() { |
| logger.info("Clean up mounted NFS mount points used in current session."); |
| storageMounts.values().stream().forEach(this::umount); |
| } |
| } |