C# Model.ListObjectsRequest类代码示例

        public void RefreshAssetList()
        {
            string SecretKey = null;
            string PublicKey = null;
            AmazonS3Client Client = new AmazonS3Client(PublicKey, SecretKey);

            ListObjectsRequest Request = new ListObjectsRequest
            {
                BucketName = "assets.minecraft.net",
            };

            ListObjectsResponse Result;

            List<Release> releases = new List<Release>();
            do
            {
                Result = Client.ListObjects(Request);
                foreach (S3Object o in Result.S3Objects)
                {
                    string IsSnapshot = "Release";
                    if(!o.Key.Contains("minecraft.jar")) continue;
                    if (Regex.IsMatch(o.Key, "[0-9][0-9]w[0-9][0-9]")) IsSnapshot = "Snapshot";
                    else if (o.Key.Contains("pre")) IsSnapshot = "Pre-release";
                    releases.Add(new Release {  Version = o.Key.Split('/')[0],
                                                Size = (o.Size / 1024).ToString() + "KB",
                                                Uploaded = DateTime.Parse(o.LastModified),
                                                Type = IsSnapshot,
                                                Key = o.Key} );
                }
            }
            while (Result.IsTruncated);
            releases.Sort(new Comparison<Release>((x, y) => DateTime.Compare(y.Uploaded, x.Uploaded)));
            _Releases.Clear();
            foreach (Release r in releases)
            {
                _Releases.Add(r);
            }
            Client.Dispose();
            Result.Dispose();
        }

        public GitBinFileInfo[] ListFiles()
        {
            var remoteFiles = new List<GitBinFileInfo>();
            var client = GetClient();

            var listRequest = new ListObjectsRequest();
            listRequest.BucketName = _bucketName;

            ListObjectsResponse listResponse;

            do {
                listResponse = client.ListObjects(listRequest);

                if (listResponse.S3Objects.Any())
                {
                    var keys = listResponse.S3Objects.Select(o => new GitBinFileInfo(o.Key, o.Size));

                    remoteFiles.AddRange(keys);

                    listRequest.Marker = remoteFiles[remoteFiles.Count - 1].Name;
                }
            }
            while (listResponse.IsTruncated);

            return remoteFiles.ToArray();
        }

        public override void SetupInitial() {
            // This is a chance to do heavy stuff, but in a thread
            
            // Obtain a full list of the bucket. Helps a lot later
            ListObjectsRequest listRequest = new ListObjectsRequest() {
                BucketName = this.bucket,
                Prefix = this.prefix
            };
            ListObjectsResponse listResponse;
            this.files = new List<string>();
            this.folders = new List<string>();
            // This needs fixing, but somewhere else
            this.folders.Add("");

            try {
                do {
                    listResponse = client.ListObjects(listRequest);
                    foreach (S3Object obj in listResponse.S3Objects) {
                        if (obj.Key.EndsWith("/") && obj.Size == 0)
                            this.folders.Add(obj.Key.TrimEnd(new char[] { '/' }).Substring(this.prefix.Length));
                        else
                            this.files.Add(obj.Key.Substring(this.prefix.Length));
                    }
                    listRequest.Marker = listResponse.NextMarker;
                } while (listResponse.NextMarker != null);
            }
            catch (AmazonS3Exception ex) {
                string message = ex.Message;
                // Clarify this error
                if (ex.ErrorCode == "SignatureDoesNotMatch")
                    message += "\n\nThis can be caused by an invalid S3 secret key credential.";
                throw new IOException(message);
            }
            catch (System.Net.WebException e) { throw new IOException(e.Message); }
        }

		public static IEnumerable<string> ListFiles(string bucketName, string accessKeyID, string secretAccessKey)
		{
			List<string> fileNames = new List<string>();
			try
			{
				var s3Client = new AmazonS3Client(accessKeyID, secretAccessKey, Amazon.RegionEndpoint.USEast1);
				ListObjectsRequest request = new ListObjectsRequest 
				{ 
					BucketName = bucketName 
				};

				while (request != null)
				{
					ListObjectsResponse response = s3Client.ListObjects(request);

					foreach (S3Object entry in response.S3Objects)
					{
						fileNames.Add(entry.Key);
					}

					if (response.IsTruncated)
					{
						request.Marker = response.NextMarker;
					}
					else
					{
						request = null;
					}
				}
			}
			catch (Exception e)
			{
			}
			return fileNames;
		}

        /// <summary>Determine if our file already exists in the specified S3 bucket</summary>
        /// <returns>True if the file already exists in the specified bucket</returns>
        public bool FileExists(string fileKey)
        {
            bool retVal = false;

            using (Client)
            {
                try
                {
                    ListObjectsRequest request = new ListObjectsRequest
                    {
                        BucketName = BucketName
                    };

                    using (var response = Client.ListObjects(request))
                    {
                        foreach (var file in response.S3Objects)
                        {
                            //Project.Log(Level.Info, "File: " + file.Key);
                            if (file.Key.Equals(fileKey))
                            {
                                retVal = true;
                            }
                        }
                    }
                }
                catch (AmazonS3Exception ex)
                {
                    ShowError(ex);
                }
            }
            return retVal;
        }

        /// <summary>Determine if our file already exists in the specified S3 bucket</summary>
        /// <returns>True if the file already exists in the specified bucket</returns>
        public bool FileExists(string fileKey)
        {
            using (Client)
            {
                try
                {
                    ListObjectsRequest request = new ListObjectsRequest
                    {
                        BucketName = BucketName
                    };

                    using (var response = Client.ListObjects(request))
                    {
                        foreach (var file in response.S3Objects)
                        {
                            if (file.Key.Equals(fileKey))
                            {
                                return true;
                            }
                        }
                    }
                }
                catch (AmazonS3Exception ex)
                {
                    ShowError(ex);
                }
            }
            return false;
        }

        public void TestCleanup()
        {
            try
            {
                var objRequest = new ListObjectsRequest()
                {
                    BucketName = this.bucketName
                };
                using (var objResponse = client.ListObjects(objRequest))
                {
                    var delRequest = new DeleteObjectsRequest()
                    {
                        BucketName = this.bucketName,
                        Quiet = true
                    };
                    delRequest.AddKeys(objResponse.S3Objects.Select(o => new KeyVersion(o.Key)).ToArray());

                    using (var delResponse = client.DeleteObjects(delRequest))
                    {

                    }
                }

                var deleteRequest = new DeleteBucketRequest()
                {
                    BucketName = this.bucketName
                };
                using (var deleteResponse = client.DeleteBucket(deleteRequest)) { }
            }
            catch (Exception ex)
            {
                this.TestContext.WriteLine("Warning: Could not cleanup bucket: {0}.  {1}", this.bucketName, ex);
            }
        }

        public async Task<IReadOnlyDictionary<string, string>> ListAsync(string name, CancellationToken cancellationToken)
        {
            var files = new Dictionary<string, string>();

            var request = new ListObjectsRequest
            {
                BucketName = _pathManager.Bucket,
                Prefix = _pathManager.GetTreeNamePrefix(name)
            };

            for (;;)
            {
                var response = await AmazonS3.ListObjectsAsync(request, cancellationToken).ConfigureAwait(false);

                foreach (var s3Object in response.S3Objects)
                {
                    var key = _pathManager.GetKeyFromTreeNamePath(name, s3Object.Key);

                    files[key] = s3Object.ETag;
                }

                if (!response.IsTruncated)
                    return files;

                request.Marker = response.NextMarker;
            }
        }

        public static async Task<IList<S3Object>> ListAllObjectsAsync(
            this AmazonS3 client, ListObjectsRequest request, CancellationToken ct)
        {
            string token = null;
            var result = new List<S3Object>();

            do
            {
                var req = new ListObjectsRequest
                    {
                        BucketName = request.BucketName,
                        Delimiter = request.Delimiter,
                        InputStream = request.InputStream,
                        MaxKeys = request.MaxKeys,
                        Prefix = request.Prefix,
                        Marker = token
                    };

                using (ListObjectsResponse response = await client.ListObjectsAsync(req).ConfigureAwait(false))
                {
                    result.AddRange(response.S3Objects);
                    token = response.NextMarker;
                }
            } while (token != null && !ct.IsCancellationRequested);

            return result;
        }

        public string[] ListNames()
        {
            ListObjectsRequest request = new ListObjectsRequest();
            request.BucketName = BucketName;

            // removed: using() / mh
            ListObjectsResponse response = _client.ListObjects(request);
            return response.S3Objects.Select(s3o => s3o.Key).ToArray();
        }

        //public ActionResult Save() {
        //    var path = Request.QueryString["image"];
        //    if (!string.IsNullOrEmpty(path)) {
        //        using(var client = new WebClient()) {
        //            using(var stream = new MemoryStream(client.DownloadData(new Uri(path)))) {
        //                var request = new PutObjectRequest();
        //                request.WithBucketName(_settings.BucketName)
        //                    .WithCannedACL(S3CannedACL.PublicRead)
        //                    .WithContentType(MimeMapping.GetMimeMapping(path))
        //                    .WithKey("Images/" + Request.QueryString["title"] + Path.GetExtension(path)).InputStream = stream;
        //                _client.PutObject(request);
        //            }
        //        }
        //    }
        //    return View();
        //}
        public ActionResult Index()
        {
            ViewBag.Class = "dashboard";

            var request = new ListObjectsRequest { BucketName = _settings.BucketName };
            var model = _client.ListObjects(request);

            return View(model.S3Objects);
        }

        public void TestAllFilesExistAndModifiedInOutput()
        {
            try
            {
                Init();

                ListObjectsRequest inputFileObjects;
                String fileKey = null;

                inputFileObjects = new ListObjectsRequest
                {
                    BucketName = DataTransformer.InputBucketName
                };

                ListObjectsResponse listResponse;
                do
                {
                    listResponse = DataTransformer.s3ForStudentBuckets.ListObjects(inputFileObjects);
                    foreach (S3Object obj in listResponse.S3Objects)
                    {
                        fileKey = obj.Key;
                        GetObjectRequest request = new GetObjectRequest()
                        {
                            BucketName = DataTransformer.OutputBucketName,
                            Key = fileKey
                        };
                        GetObjectResponse response = DataTransformer.s3ForStudentBuckets.GetObject(request);

                        StreamReader reader = new StreamReader(response.ResponseStream);
                        string content = reader.ReadToEnd();

                        if(!content.Contains(DataTransformer.JsonComment))
                        {
                            Assert.Fail("Failure - Input file not transformed; output file does not contain JSON comment. " + fileKey);
                        }

                      }

                    // Set the marker property
                    inputFileObjects.Marker = listResponse.NextMarker;
                } while (listResponse.IsTruncated);

            }
            catch (AmazonServiceException ase)
            {
                Console.WriteLine("Error Message:    " + ase.Message);
                Console.WriteLine("HTTP Status Code: " + ase.StatusCode);
                Console.WriteLine("AWS Error Code:   " + ase.ErrorCode);
                Console.WriteLine("Error Type:       " + ase.ErrorType);
                Console.WriteLine("Request ID:       " + ase.RequestId);
            }
            catch (AmazonClientException ace)
            {
                Console.WriteLine("Error Message: " + ace.Message);
            }
        }

        public bool StateExists(string appId, string key)
        {
            var listObjectsRequest = new ListObjectsRequest
                                        {
                                            BucketName = ConfigurationManager.AppSettings["BucketName"],
                                            Prefix = string.Format("{0}/{1}", appId, key),
                                        };

            var response =  WebApiApplication.AmazonS3Client.ListObjects(listObjectsRequest);

            return response.S3Objects.Count == 1;
        }

        /// <summary>
        /// Executes the task.
        /// </summary>
        /// <returns>True if the task executed successfully, false otherwise.</returns>
        public override bool Execute()
        {
            ListObjectsRequest request = new ListObjectsRequest()
                    .WithBucketName(BucketName)
                    .WithPrefix(this.Prefix)
                    .WithMaxKeys(1);

            using (ListObjectsResponse response = Client.ListObjects(request))
            {
                Exists = response.S3Objects != null && response.S3Objects.Count > 0;
            }

            return true;
        }

        private static void ExportAndImport(string folder,CloudBlobContainer container, AmazonS3 s3)
        {
            var listRequest = new ListObjectsRequest{
                BucketName = ConfigurationManager.AppSettings["S3Bucket"],
            }.WithPrefix(folder);

            Console.WriteLine("Fetching all S3 object in " + folder);
            var s3response = s3.ListObjects(listRequest);

            //Checking if container exists, and creating it if not
            if (container.CreateIfNotExists()) {
                Console.WriteLine("Creating the blob container");
            }

            foreach (var s3Item in s3response.S3Objects)
            {
                if (s3Item.Key == folder) {
                    continue;
                }

                if (s3Item.Key.EndsWith("/"))
                {
                    ExportAndImport(s3Item.Key, container, s3);
                    continue;
                }

                Console.WriteLine("---------------------------------------------------");
                var blockBlob = container.GetBlockBlobReference(s3Item.Key);
                Console.WriteLine("Blob: " + blockBlob.Uri.AbsoluteUri);

                var id = blockBlob.StartCopyFromBlob(new Uri("http://" + awsServiceUrl + "/" + s3Bucket + "/" + HttpUtility.UrlEncode(s3Item.Key)), null, null, null);

                bool continueLoop = true;
                while (continueLoop && id == string.Empty)
                {
                    var copyState = blockBlob.CopyState;
                    if (copyState != null)
                    {
                        var percentComplete = copyState.BytesCopied / copyState.TotalBytes;
                        Console.WriteLine("Status of blob copy...." + copyState.Status + " " + copyState.TotalBytes + " of " + copyState.BytesCopied + "bytes copied. " + string.Format("{0:0.0%}", percentComplete));
                        if (copyState.Status != CopyStatus.Pending)
                        {
                            continueLoop = false;
                        }
                    }
                    System.Threading.Thread.Sleep(1000);
                }
            }
        }