Spaceman1984 commented on a change in pull request #3748: Systemvm template api (WIP) URL: https://github.com/apache/cloudstack/pull/3748#discussion_r358664540
########## File path: server/src/main/java/com/cloud/storage/mount/NfsMountManager.java ########## @@ -0,0 +1,203 @@ +// 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 com.cloud.storage.mount; + +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 org.apache.cloudstack.framework.config.ConfigKey; +import org.apache.cloudstack.utils.identity.ManagementServerNode; +import org.apache.log4j.Logger; +import org.springframework.stereotype.Component; + +import com.cloud.storage.StorageLayer; +import com.cloud.utils.exception.CloudRuntimeException; +import com.cloud.utils.script.OutputInterpreter; +import com.cloud.utils.script.Script; + +@Component +public class NfsMountManager implements MountManager { + private static final Logger s_logger = Logger.getLogger(NfsMountManager.class); + + 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 NfsMountManager(StorageLayer storage, int timeout) { + this.storage = storage; + this.timeout = timeout; + } + + public String getMountPoint(String storageUrl, Integer nfsVersion) { + String mountPoint = storageMounts.get(storageUrl); + if (mountPoint != null) { + return mountPoint; + } + + URI uri; + try { + uri = new URI(storageUrl); + } catch (URISyntaxException e) { + s_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) { + s_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, Integer nfsVersion) { + String mountPoint = setupMountPoint(parent); + if (mountPoint == null) { + s_logger.warn("Unable to create a mount point"); + return null; + } + + Script command = new Script(true, "mount", timeout, s_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) { + s_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, s_logger); + script.add("1777", mountPoint); + result = script.execute(); + if (result != null) { + s_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; + } + } + s_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, s_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; + s_logger.error(errMsg); + throw new CloudRuntimeException(errMsg); + } + deleteMountPath(localRootPath); + s_logger.debug("Successfully umounted " + localRootPath); Review comment: Done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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