Merge branch 'master' of https://code.grnet.gr/git/pithos-ms-client
[pithos-ms-client] / trunk / Pithos.Core / Agents / CloudTransferAction.cs
index dbdafaf..8a81b1b 100644 (file)
@@ -1,4 +1,46 @@
+#region
+/* -----------------------------------------------------------------------
+ * <copyright file="CloudTransferAction.cs" company="GRNet">
+ * 
+ * Copyright 2011-2012 GRNET S.A. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above
+ *      copyright notice, this list of conditions and the following
+ *      disclaimer in the documentation and/or other materials
+ *      provided with the distribution.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and
+ * documentation are those of the authors and should not be
+ * interpreted as representing official policies, either expressed
+ * or implied, of GRNET S.A.
+ * </copyright>
+ * -----------------------------------------------------------------------
+ */
+#endregion
 using System;
+using System.Diagnostics.Contracts;
 using System.IO;
 using System.Threading;
 using Pithos.Interfaces;
@@ -13,98 +55,211 @@ namespace Pithos.Core.Agents
         DownloadUnconditional,
         DeleteLocal,
         DeleteCloud,
-        RenameCloud
+        RenameCloud,
+        RenameLocal
     }
 
     public class CloudAction
     {
+        public AccountInfo AccountInfo { get; set; }
         public CloudActionType Action { get; set; }
-        public FileInfo LocalFile { get; set; }
+        public FileSystemInfo LocalFile { get; set; }
         public ObjectInfo CloudFile { get; set; }
         public FileState FileState { get; set; }
         public string Container { get; set; }
 
+        public readonly DateTime Created = DateTime.Now;
 
-        public Lazy<string> LocalHash { get; protected set; }
-        private Lazy<string> _topHash;
-        public Lazy<string> TopHash
+
+        public Lazy<TreeHash> TreeHash { get; protected set; }
+        //public Lazy<string> TopHash { get; set; }
+
+
+        [ContractInvariantMethod]
+        private void Invariants()
         {
-            get { return _topHash; }
-            set { _topHash = value; }
+            Contract.Invariant(AccountInfo!=null);
         }
 
+        public bool IsShared
+        {
+            get { return  CloudFile!=null && AccountInfo.UserName != CloudFile.Account; }
+        }
 
-        protected CloudAction(CloudActionType action)
+        protected CloudAction(AccountInfo accountInfo,CloudActionType action)
         {
+            if (accountInfo==null)
+                throw new ArgumentNullException("accountInfo");
+            Contract.EndContractBlock();
+
             Action = action;
+            AccountInfo = accountInfo;
         }
 
-        public CloudAction(CloudActionType action, FileInfo localFile, ObjectInfo cloudFile,FileState state,int blockSize, string algorithm) : this(action)
+        public CloudAction(AccountInfo accountInfo, CloudActionType action, FileSystemInfo localFile, ObjectInfo cloudFile, FileState state, int blockSize, string algorithm)
+            : this(accountInfo,action)
         {
-            LocalFile = localFile;
+            if(blockSize<=0)
+                throw new ArgumentOutOfRangeException("blockSize");
+            Contract.EndContractBlock();
+            LocalFile = localFile.WithProperCapitalization();
             CloudFile = cloudFile;
             FileState = state;
-            if (LocalFile != null)
-            {
-                LocalHash = new Lazy<string>(() => LocalFile.CalculateHash(blockSize,algorithm),
-                                             LazyThreadSafetyMode.ExecutionAndPublication);
-            }
+            
+            if (LocalFile == null) 
+                return;
+
+            TreeHash = new Lazy<TreeHash>(() => Signature.CalculateTreeHash(LocalFile, blockSize,algorithm),
+                                            LazyThreadSafetyMode.ExecutionAndPublication);
         }
 
+        //Calculate the download path for the cloud file
+        public string GetDownloadPath()
+        {
+            if (CloudFile == null)
+                return String.Empty;
+            var filePath = CloudFile.RelativeUrlToFilePath(AccountInfo.UserName);
+            return Path.Combine(AccountInfo.AccountPath, filePath);
+        }
 
+        public override string ToString()
+        {
+            return String.Format("{0}:{1}->{2}", Action, LocalFile.FullName, CloudFile.Name);
+        }
 
+        protected static ObjectInfo CreateObjectInfoFor(AccountInfo accountInfo, FileSystemInfo fileInfo)
+        {
+            if(accountInfo==null)
+                throw new ArgumentNullException("accountInfo");
+            if(fileInfo==null)
+                throw new ArgumentNullException("fileInfo");
+            Contract.Ensures(Contract.Result<ObjectInfo>()!=null);
+            Contract.EndContractBlock();
+
+            var capitalizedFileInfo = fileInfo.WithProperCapitalization();
+            var fullLocalName = capitalizedFileInfo.FullName;
+            var othersPath = Path.Combine(accountInfo.AccountPath, FolderConstants.OthersFolder);
+
+            ObjectInfo objectInfo;
+
+            var isShared = fullLocalName.StartsWith(othersPath, StringComparison.InvariantCultureIgnoreCase);
+            if (isShared)
+            {                
+                var pathRelativeToOther = fullLocalName.Substring(othersPath.Length + 1);
+                var otherParts = pathRelativeToOther.Split('\\');
+                var otherName = otherParts[0];
+                var otherContainer = otherParts[1];
+                objectInfo=new ObjectInfo
+                           {
+                               Account = otherName, 
+                               Container = otherContainer, 
+                               Name = String.Join("/", otherParts.Splice(2))
+                           };
+            }
+            else
+                objectInfo=new ObjectInfo(accountInfo.AccountPath, accountInfo.UserName, fileInfo);
+            
+            objectInfo.Content_Type= (fileInfo is DirectoryInfo)
+                                    ?   "appication/directory"
+                                    :   "application/octet-stream";
+            return objectInfo;
+        }
     }    
 
     public class CloudDownloadAction:CloudAction
     {
-        public CloudDownloadAction(ObjectInfo cloudFile)
-            :base(CloudActionType.DownloadUnconditional)
+        public CloudDownloadAction(AccountInfo accountInfo, ObjectInfo cloudFile)
+            :base(accountInfo,CloudActionType.DownloadUnconditional)
         {            
+            if (String.IsNullOrWhiteSpace(cloudFile.Container))
+                throw new ArgumentException("CloudFile.Container","cloudFile");
+            Contract.EndContractBlock();
+
             CloudFile = cloudFile;
         }
+
+        [ContractInvariantMethod]
+        private void Invariants()
+        {
+            Contract.Invariant(!String.IsNullOrWhiteSpace(CloudFile.Container));
+        }
+
+        public override string ToString()
+        {
+            return String.Format("{0}: _ <- {1}", Action, CloudFile.Name);
+        }
         
     }
     public class CloudDeleteAction:CloudAction
     {
-        public CloudDeleteAction(string fileName, FileState fileState)
-            : this(new ObjectInfo { Name = fileName },fileState)
-        {
+        public CloudDeleteAction(AccountInfo accountInfo,FileSystemInfo fileInfo, FileState fileState)
+            : this(accountInfo,fileInfo,CreateObjectInfoFor(accountInfo, fileInfo),fileState)
+        {            
         }
 
-        public CloudDeleteAction(ObjectInfo cloudFile, FileState fileState) 
-            : base(CloudActionType.DeleteCloud)
+        public CloudDeleteAction(AccountInfo accountInfo, FileSystemInfo fileInfo,ObjectInfo cloudFile, FileState fileState) 
+            : base(accountInfo,CloudActionType.DeleteCloud)
         {
             CloudFile = cloudFile;
+            LocalFile = fileInfo;
             FileState = fileState;
         }
+
+        public CloudDeleteAction(CloudAction action)
+            : this(action.AccountInfo,action.LocalFile,action.CloudFile,action.FileState)
+        {}
+
+        [ContractInvariantMethod]
+        private void Invariants()
+        {
+            Contract.Invariant(!String.IsNullOrWhiteSpace(CloudFile.Container));
+        }
+
+        public override string ToString()
+        {
+            return String.Format("{0}: _ ->{1}", Action, CloudFile.Name);
+        }
+
     }
 
     public class CloudUploadAction:CloudAction
     {
-        public CloudUploadAction(FileInfo fileInfo, FileState state, int blockSize, string algorithm) 
-            : base(CloudActionType.UploadUnconditional,fileInfo,ObjectInfo.Empty,state,blockSize,algorithm)
+        public CloudUploadAction(AccountInfo accountInfo, FileSystemInfo fileInfo, FileState state, int blockSize, string algorithm)
+            : base(accountInfo, CloudActionType.UploadUnconditional,fileInfo,CreateObjectInfoFor(accountInfo,fileInfo),state,blockSize,algorithm)             
+        {
+        }
+
+        [ContractInvariantMethod]
+        private void Invariants()
         {
+            Contract.Invariant(!String.IsNullOrWhiteSpace(CloudFile.Container));
         }
+
     }
 
     public class CloudMoveAction:CloudAction
     {
-        public string OldFileName { get; set; }
-        public string OldPath { get; set; }
-        public string NewFileName { get; set; }
-        public string NewPath { get; set; }
-
-        public CloudMoveAction(CloudActionType action, string oldPath, string oldFileName, string newFileName, string newPath)
-            :base(action)
-        {
-            OldFileName = oldFileName;
-            OldPath = oldPath;
-            NewFileName = newFileName;
-            NewPath = newPath;
+        public ObjectInfo OldCloudFile { get; set; }
+
+        public FileSystemInfo OldLocalFile { get; set; }
+
+        public CloudMoveAction(AccountInfo accountInfo, CloudActionType action, FileSystemInfo oldFile, FileSystemInfo newFile)
+            :base(accountInfo,action)
+        {
+            LocalFile = newFile;
+            CloudFile = CreateObjectInfoFor(accountInfo, newFile);
+            
+            OldLocalFile = oldFile;
+            OldCloudFile = CreateObjectInfoFor(accountInfo, oldFile);
+
             //This is a rename operation, a hash will not be used
-            LocalHash = new Lazy<string>(() => String.Empty, LazyThreadSafetyMode.ExecutionAndPublication);
+            TreeHash = new Lazy<TreeHash>(() => Network.TreeHash.Empty, LazyThreadSafetyMode.ExecutionAndPublication);
         }
 
+        public override string ToString()
+        {
+            return String.Format("{0}:{1}->{2}", Action, OldCloudFile.Name, CloudFile.Name);
+        }
 
     }