public async Task <ItemMeta> GetObjectMetadataAsync(string bucketName, string objectName, string versionID = null, string matchEtag = null, DateTime?modifiedSince = null)
{
if (string.IsNullOrEmpty(bucketName))
{
throw new ArgumentNullException(nameof(bucketName));
}
if (string.IsNullOrEmpty(objectName))
{
throw new ArgumentNullException(nameof(objectName));
}
bucketName = ConvertBucketName(bucketName);
HeadObjectRequest request = new HeadObjectRequest(bucketName, objectName);
if (!string.IsNullOrEmpty(versionID))
{
request.SetVersionId(versionID);
}
//执行请求
HeadObjectResult result = _client.HeadObject(request);
if (!result.IsSuccessful())
{
throw new Exception("Query object meta data failed.");
}
ItemMeta metaData = new ItemMeta()
{
ObjectName = objectName,
Size = result.size,
ETag = result.eTag,
IsEnableHttps = Options.IsEnableHttps,
};
return(await Task.FromResult(metaData));
}
public static void AsynHeadObject(COSXML.CosXml cosXml, string bucket, string key)
{
QLog.D("XIAO", String.Format("currentThread id = {0}", Thread.CurrentThread.ManagedThreadId));
HeadObjectRequest request = new HeadObjectRequest(bucket, key);
//设置签名有效时长
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.HeadObject(request,
delegate(CosResult cosResult)
{
HeadObjectResult result = cosResult as HeadObjectResult;
Console.WriteLine(result.GetResultInfo());
Console.WriteLine(String.Format("currentThread id = {0}", Thread.CurrentThread.ManagedThreadId));
},
delegate(CosClientException clientEx, CosServerException serverEx)
{
if (clientEx != null)
{
QLog.D("XIAO", clientEx.Message);
Console.WriteLine("CosClientException: " + clientEx.StackTrace);
}
if (serverEx != null)
{
QLog.D("XIAO", serverEx.Message);
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
Console.WriteLine(String.Format("currentThread id = {0}", Thread.CurrentThread.ManagedThreadId));
});
}
/// 获取对象信息
public void HeadObject()
{
//.cssg-snippet-body-start:[head-object]
try
{
string bucket = "examplebucket-1250000000"; //存储桶，格式：BucketName-APPID
string key = "exampleobject"; //对象键
HeadObjectRequest request = new HeadObjectRequest(bucket, key);
//执行请求
HeadObjectResult result = cosXml.HeadObject(request);
//请求成功
Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
//请求失败
Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
//请求失败
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
//.cssg-snippet-body-end
}
/// <summary>
/// 查询对象元数据
/// </summary>
/// <param name="key">对象在存储桶中的位置，即称对象键</param>
/// <param name="bucketName">存储桶，格式：BucketName-APPID</param>
public static void QueryObject(string key, string bucketName = CosConfig.DEFAULT_BUCKET)
{
var cosXml = InitializeCosConfig();
try
{
string bucket = $"{bucketName}-{AppId}"; //存储桶，格式：BucketName-APPID
HeadObjectRequest request = new HeadObjectRequest(bucket, key);
//设置签名有效时长
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
//执行请求
HeadObjectResult result = cosXml.HeadObject(request);
//请求成功
Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
//请求失败
Console.WriteLine("CosClientException: " + clientEx);
}
catch (COSXML.CosException.CosServerException serverEx)
{
//请求失败
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
}
private void ComputeSliceList(HeadObjectResult result)
{
// slice list can be not empty, if use pause&resume, skip it
if (this.sliceList.Count != 0)
{
return;
}
long contentLength = result.size;
rangeEnd = rangeEnd == -1L || (rangeEnd > contentLength) ? contentLength - 1 : rangeEnd;
if (rangeEnd - rangeStart + 1 < this.divisionSize)
{
DownloadSliceStruct slice = new DownloadSliceStruct();
slice.partNumber = 1;
slice.sliceStart = rangeStart;
slice.sliceEnd = rangeEnd;
this.sliceList.Add(slice.partNumber, slice);
}
else
{
long sliceCount = ((rangeEnd - rangeStart) / this.sliceSize) + 1;
for (int i = 0; i < sliceCount; i++)
{
DownloadSliceStruct slice = new DownloadSliceStruct();
slice.partNumber = i + 1;
slice.sliceStart = rangeStart + i * this.sliceSize;
slice.sliceEnd =
(slice.sliceStart + this.sliceSize > rangeEnd)
? rangeEnd : slice.sliceStart + this.sliceSize - 1;
this.sliceList.Add(slice.partNumber, slice);
}
}
}
public void testGetObjectByte()
{
try
{
HeadObjectRequest request = new HeadObjectRequest(bucket, commonKey);
//执行请求
HeadObjectResult result = cosXml.HeadObject(request);
long contentLength = Int64.Parse(result.responseHeaders["Content-Length"][0]);
GetObjectBytesRequest getObjectBytesRequest = new GetObjectBytesRequest(bucket, commonKey);
getObjectBytesRequest.SetCosProgressCallback(delegate(long completed, long total)
{
Console.WriteLine(String.Format("{0} progress = {1} / {2} : {3:##.##}%", DateTime.Now.ToString(), completed, total, completed * 100.0 / total));
});
GetObjectBytesResult getObjectBytesResult = cosXml.GetObject(getObjectBytesRequest);
byte[] content = getObjectBytesResult.content;
Assert.AreEqual(content.Length, contentLength);
}
catch (COSXML.CosException.CosClientException clientEx)
{
Console.WriteLine("CosClientException: " + clientEx);
Assert.True(false);
}
catch (COSXML.CosException.CosServerException serverEx)
{
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
Assert.True(false);
}
}
public Task <bool> ObjectsExistsAsync(string bucketName, string objectName)
{
if (string.IsNullOrEmpty(bucketName))
{
throw new ArgumentNullException(nameof(bucketName));
}
objectName = FormatObjectName(objectName);
bucketName = ConvertBucketName(bucketName);
try
{
//build request
HeadObjectRequest request = new HeadObjectRequest(bucketName, objectName);
//执行请求
HeadObjectResult result = _client.HeadObject(request);
if (result.IsSuccessful())
{
return(Task.FromResult(true));
}
else
{
return(Task.FromResult(false));
}
}
catch (CosServerException ex)
{
if (ex.statusCode == 404)
{
return(Task.FromResult(false));
}
throw;
}
}
public void AsynHeadObject(COSXML.CosXml cosXml, string bucket, string key)
{
HeadObjectRequest request = new HeadObjectRequest(bucket, key);
//设置签名有效时长
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXml.HeadObject(request,
delegate(CosResult cosResult)
{
HeadObjectResult result = cosResult as HeadObjectResult;
Console.WriteLine(result.GetResultInfo());
manualResetEvent.Set();
},
delegate(CosClientException clientEx, CosServerException serverEx)
{
if (clientEx != null)
{
Console.WriteLine("CosClientException: " + clientEx.Message);
}
if (serverEx != null)
{
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
manualResetEvent.Set();
});
}
public void TestHeadObject()
{
if (init())
{
HeadObjectRequest headObjectRequest = new HeadObjectRequest();
headObjectRequest.BucketName = bucketName;
headObjectRequest.ObjectKey = objKeyNameFileData;
HeadObjectResult result = ks3Client.headObject(headObjectRequest);
}
}
// resolve resumable task file, continue in proper position
private void ResumeDownloadInPossible(HeadObjectResult result, string localFile)
{
this.resumableInfo = DownloadResumableInfo.LoadFromResumableFile(resumableTaskFile);
if (this.resumableInfo != null)
{
if ((result.crc64ecma == null || result.crc64ecma == resumableInfo.crc64ecma) &&
this.resumableInfo.eTag == result.eTag &&
this.resumableInfo.lastModified == result.lastModified &&
this.resumableInfo.contentLength == result.size)
{
// load parts downloaded
if (this.resumableInfo.slicesDownloaded != null)
{
// process downloaded parts
foreach (DownloadSliceStruct downloadedSlice in resumableInfo.slicesDownloaded)
{
// remove from current queue
DownloadSliceStruct calculatedSlice;
bool ret = this.sliceList.TryGetValue(downloadedSlice.partNumber, out calculatedSlice);
if (!ret)
{
// resumable file broken
break;
}
if (calculatedSlice.sliceStart == downloadedSlice.sliceStart &&
calculatedSlice.sliceEnd == downloadedSlice.sliceEnd)
{
if (this.sliceToRemove == null)
{
this.sliceToRemove = new HashSet <int>();
}
this.sliceToRemove.Add(downloadedSlice.partNumber);
}
// add to merging list
string tmpFileName = localDir + "." + localFileName + ".cosresumable." + downloadedSlice.partNumber;
this.tmpFilePaths.Add(tmpFileName);
}
}
else
{
this.resumableInfo.slicesDownloaded = new List <DownloadSliceStruct>();
}
}
}
else
{
this.resumableInfo = new DownloadResumableInfo();
this.resumableInfo.contentLength = result.size;
this.resumableInfo.crc64ecma = result.crc64ecma;
this.resumableInfo.eTag = result.eTag;
this.resumableInfo.lastModified = result.lastModified;
this.resumableInfo.slicesDownloaded = new List <DownloadSliceStruct>();
resumableInfo.Persist(resumableTaskFile);
}
}
internal void Download()
{
UpdateTaskState(TaskState.Waiting);
//对象是否存在
headObjectRequest = new HeadObjectRequest(bucket, key);
cosXmlServer.HeadObject(headObjectRequest, delegate(CosResult cosResult)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.Running))
{
HeadObjectResult result = cosResult as HeadObjectResult;
ComputeSliceList(result);
// resolv resumeInfo
if (resumable)
{
if (resumableTaskFile == null)
{
resumableTaskFile = localDir + localFileName + ".cosresumabletask";
}
ResumeDownloadInPossible(result, localDir + localFileName);
}
// concurrent download
GetObject(result.crc64ecma);
}
},
delegate(CosClientException clientEx, CosServerException serverEx)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.Failed))
{
if (failCallback != null)
{
failCallback(clientEx, serverEx);
}
}
});
}
private bool CheckFileExists(string bucket, string fileKey)
{
try
{
HeadObjectRequest request = new HeadObjectRequest(bucket, fileKey);
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), COS_REQUEST_DEFAULT_DURATION);
HeadObjectResult result = cosXml.HeadObject(request);
return(result.httpCode.Equals(COS_STATUS.OK));
}
catch (Exception ex)
{
return(false);
}
}
internal void Download()
{
UpdateTaskState(TaskState.Waiting);
//对象是否存在
headObjectRequest = new HeadObjectRequest(bucket, key);
cosXmlServer.HeadObject(headObjectRequest, delegate(CosResult cosResult)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.Running))
{
HeadObjectResult result = cosResult as HeadObjectResult;
//计算range
//download
GetObject();
}
},
delegate(CosClientException clientEx, CosServerException serverEx)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.Failed))
{
if (failCallback != null)
{
failCallback(clientEx, serverEx);
}
}
});
}
internal void Download()
{
UpdateTaskState(TaskState.WAITTING);
//对象是否存在
headObjectRequest = new HeadObjectRequest(bucket, key);
headObjectRequest.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
cosXmlServer.HeadObject(headObjectRequest, delegate(CosResult cosResult)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.RUNNING))
{
HeadObjectResult result = cosResult as HeadObjectResult;
//计算range
//download
GetObject();
}
},
delegate(CosClientException clientEx, CosServerException serverEx)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.FAILED))
{
if (failCallback != null)
{
failCallback(clientEx, serverEx);
}
}
});
}
public static bool headObject()
{
try
{
Console.WriteLine("--- headObject: ---");
HeadObjectRequest headObjectRequest = new HeadObjectRequest();
headObjectRequest.BucketName = bucketName;
headObjectRequest.ObjectKey = objKeyNameFileData;
HeadObjectResult result = ks3Client.headObject(headObjectRequest);
long length = result.ObjectMetadata.getContentLength();
Console.WriteLine("---------------------\n");
}
catch (System.Exception e)
{
Console.WriteLine(e.ToString());
return(false);
}
return(true);
}
public void HeadObject()
{
try
{
HeadObjectRequest request = new HeadObjectRequest(bucket, commonKey);
//执行请求
HeadObjectResult result = cosXml.HeadObject(request);
Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
Console.WriteLine("CosClientException: " + clientEx.StackTrace);
Assert.True(false);
}
catch (COSXML.CosException.CosServerException serverEx)
{
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
Assert.True(false);
}
}
public static void HeadObject(COSXML.CosXml cosXml, string bucket, string key)
{
try
{
HeadObjectRequest request = new HeadObjectRequest(bucket, key);
//设置签名有效时长
request.SetSign(TimeUtils.GetCurrentTime(TimeUnit.SECONDS), 600);
//执行请求
HeadObjectResult result = cosXml.HeadObject(request);
Console.WriteLine(result.GetResultInfo());
}
catch (COSXML.CosException.CosClientException clientEx)
{
QLog.D("XIAO", clientEx.Message);
Console.WriteLine("CosClientException: " + clientEx.StackTrace);
}
catch (COSXML.CosException.CosServerException serverEx)
{
QLog.D("XIAO", serverEx.Message);
Console.WriteLine("CosServerException: " + serverEx.GetInfo());
}
}
internal void Copy()
{
UpdateTaskState(TaskState.WAITTING);
//源对象是否存在
if (copySource == null)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.FAILED))
{
if (failCallback != null)
{
failCallback(new CosClientException((int)CosClientError.INVALID_ARGUMENT, "copySource = null"), null);
}
}
//error
return;
}
headObjectRequest = new HeadObjectRequest(copySource.bucket, copySource.key);
headObjectRequest.Region = copySource.region;
cosXmlServer.HeadObject(headObjectRequest, delegate(CosResult cosResult)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.RUNNING))
{
HeadObjectResult result = cosResult as HeadObjectResult;
//源对象的长度
sourceSize = result.size;
if (sourceSize > divisionSize)
{
MultiPartCopy();
}
else
{
SimpleCopy();
}
}
},
delegate(CosClientException clientEx, CosServerException serverEx)
{
lock (syncExit)
{
if (isExit)
{
return;
}
}
if (UpdateTaskState(TaskState.FAILED))
{
if (failCallback != null)
{
failCallback(clientEx, serverEx);
}
}
});
}
