/// <summary>
/// 获取对象信息
/// </summary>
/// <param name="bucketName"></param>
/// <param name="objectName"></param>
/// <param name="versionID"></param>
/// <param name="matchEtag"></param>
/// <param name="modifiedSince"></param>
/// <returns></returns>
public 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));
}
objectName = FormatObjectName(objectName);
GetObjectMetadataRequest request = new GetObjectMetadataRequest()
{
BucketName = bucketName,
ObjectKey = objectName,
VersionId = versionID,
};
GetObjectMetadataResponse response = _client.GetObjectMetadata(request);
var newMeta = new ItemMeta()
{
ObjectName = objectName,
ContentType = response.ContentType,
Size = response.ContentLength,
LastModified = response.LastModified.GetValueOrDefault(),
ETag = response.ETag,
IsEnableHttps = Options.IsEnableHttps,
MetaData = new Dictionary <string, string>(),
};
if (response.Metadata != null && response.Metadata.Count > 0)
{
foreach (var item in response.Metadata.KeyValuePairs)
{
newMeta.MetaData.Add(item.Key, item.Value);
}
}
return(Task.FromResult(newMeta));
}
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 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));
}
GetObjectMetadataRequest request = new GetObjectMetadataRequest(bucketName, objectName)
{
VersionId = versionID
};
var oldMeta = _client.GetObjectMetadata(request);
// 设置新的文件元信息。
var newMeta = new ItemMeta()
{
ObjectName = objectName,
ContentType = oldMeta.ContentType,
Size = oldMeta.ContentLength,
LastModified = oldMeta.LastModified,
ETag = oldMeta.ETag,
IsEnableHttps = Options.IsEnableHttps,
MetaData = new Dictionary <string, string>(),
};
if (oldMeta.UserMetadata != null && oldMeta.UserMetadata.Count > 0)
{
foreach (var item in oldMeta.UserMetadata)
{
newMeta.MetaData.Add(item.Key, item.Value);
}
}
return(await Task.FromResult(newMeta));
}