internal bool ExistsWithBucketCheck(out bool bucketExists)
{
bucketExists = true;
try
{
var request = new HeadObjectRequest
{
NamespaceName = namespaceName,
BucketName = bucket,
ObjectName = ObjectStorageHelper.EncodeKey(key)
};
// If the object doesn't exist then a "NotFound" will be thrown
client.HeadObject(request);
return(true);
}
catch (WebException we)
{
if (we.Status.Equals(WebExceptionStatus.ProtocolError) && ((HttpWebResponse)we.Response).StatusCode == HttpStatusCode.NotFound)
{
bucketExists = false;
return(false);
}
else
{
throw;
}
}
}
/// <summary>
/// Copies the file from the local file system to ObjectStorage.
/// If the file already exists in ObjectStorage and overwrite is set to false than an ArgumentException is thrown.
/// </summary>
/// <param name="srcFileName">Location of the file on the local file system to copy.</param>
/// <param name="overwrite">Determines whether the file can be overwritten.</param>
/// <exception cref="T:System.IO.IOException">If the file already exists in ObjectStorage and overwrite is set to false.</exception>
/// <exception cref="T:System.Net.WebException"></exception>
public ObjectStorageFileInfo CopyFromLocal(string srcFileName, bool overwrite)
{
if (!overwrite)
{
if (Exists)
{
throw new IOException("File already exists");
}
}
var putObjectRequest = new PutObjectRequest
{
NamespaceName = namespaceName,
BucketName = bucket,
ObjectName = ObjectStorageHelper.EncodeKey(key)
};
using (var stream = File.Open(srcFileName, FileMode.Open))
{
putObjectRequest.UploadPartBody = stream;
var updateRes = client.PutObject(putObjectRequest);
}
return(this);
}
private List <string> GetOciPrefixs(string prefix, SearchOption searchOption, string nextStartWith = "")
{
var res = new List <string>();
var listObjectsRequest = new ListObjectsRequest()
{
NamespaceName = NamespaceName,
BucketName = BucketName,
Start = nextStartWith,
Delimiter = "/",
Prefix = ObjectStorageHelper.EncodeKey(prefix),
Fields = new List <string> {
"name"
},
Limit = 1
};
var objects = Client.ListObjects(listObjectsRequest);
res.AddRange(objects.ListObjects.Prefixes);
if (!string.IsNullOrEmpty(objects.ListObjects.NextStartWith))
{
res.AddRange(GetOciPrefixs(ObjectStorageHelper.DecodeKey(prefix), searchOption, objects.ListObjects.NextStartWith));
}
if (objects.ListObjects.Prefixes != null && objects.ListObjects.Prefixes.Count > 0)
{
// all sub prefix
if (searchOption == SearchOption.AllDirectories)
{
foreach (var pre in objects.ListObjects.Prefixes)
{
res.AddRange(GetOciPrefixs(pre, searchOption));
}
}
else
{
var newPrefix = objects.ListObjects.Prefixes.Where(p => p == ObjectStorageHelper.EncodeKey(prefix) + "/");
if (newPrefix != null && newPrefix.Count() > 0)
{
foreach (var pre in newPrefix)
{
res.AddRange(GetOciPrefixs(pre, searchOption));
}
}
}
}
return(res);
}
/// <summary>
/// Copies from ObjectStorage to the local file system.
/// If the file already exists on the local file system and overwrite is set to false than an ArgumentException is thrown.
/// </summary>
/// <param name="destFileName">The path where to copy the file to.</param>
/// <param name="overwrite">Determines whether the file can be overwritten.</param>
/// <exception cref="T:System.IO.IOException">If the file already exists locally and overwrite is set to false.</exception>
/// <exception cref="T:System.Net.WebException"></exception>
/// <returns>FileInfo for the local file where file is copied to.</returns>
public FileInfo CopyToLocal(string destFileName, bool overwrite)
{
if (!overwrite)
{
if (new FileInfo(destFileName).Exists)
{
throw new IOException("File already exists");
}
}
var getObjectRequest = new GetObjectRequest
{
NamespaceName = namespaceName,
BucketName = bucket,
ObjectName = ObjectStorageHelper.EncodeKey(key)
};
client.DownloadObject(getObjectRequest, destFileName);
return(new FileInfo(destFileName));
}
/// <summary>
/// Deletes the from ObjectStorage.
/// </summary>
/// <exception cref="T:System.Net.WebException"></exception>
public void Delete()
{
if (Exists)
{
var deleteObjectRequest = new DeleteObjectRequest
{
NamespaceName = namespaceName,
BucketName = bucket,
ObjectName = ObjectStorageHelper.EncodeKey(key)
};
try
{
client.DeleteObject(deleteObjectRequest);
}
catch (WebException we)
{
if (!(we.Status.Equals(WebExceptionStatus.ProtocolError) && ((HttpWebResponse)we.Response).StatusCode == HttpStatusCode.NotFound))
{
throw;
}
}
}
}
/// <summary>
/// Deletes all the files in this directory as well as this directory. If recursive is set to true then all sub directories will be
/// deleted as well.
/// </summary>
/// <exception cref="T:System.Net.WebException"></exception>
public void Delete(bool recursive)
{
if (String.IsNullOrEmpty(BucketName))
{
throw new NotSupportedException();
}
if (recursive)
{
ListObjectsRequest listRequest = new ListObjectsRequest
{
NamespaceName = NamespaceName,
BucketName = BucketName,
Prefix = ObjectStorageHelper.EncodeKey(ObjectKey)
};
DeleteObjectsRequest deleteRequest = new DeleteObjectsRequest
{
NamespaceName = NamespaceName,
BucketName = BucketName,
Objects = new List <TargetDelete>()
};
ListObjectsResponse listResponse;
do
{
listResponse = Client.ListObjects(listRequest);
foreach (var obj in listResponse.ListObjects.Objects)
{
deleteRequest.Objects.Add(new TargetDelete {
ObjectName = obj.Name
});
if (deleteRequest.Objects.Count >= MULTIPLE_OBJECT_DELETE_LIMIT)
{
Client.DeleteObjects(deleteRequest);
deleteRequest.Objects.Clear();
}
}
if (string.IsNullOrEmpty(listResponse.ListObjects.NextStartWith))
{
break;
}
else
{
listRequest.Start = listResponse.ListObjects.NextStartWith;
}
} while (true);
if (deleteRequest.Objects.Count > 0)
{
Client.DeleteObjects(deleteRequest);
}
}
if (String.IsNullOrEmpty(ObjectKey) && Exists)
{
var request = new DeleteBucketRequest {
NamespaceName = NamespaceName, BucketName = BucketName
};
Client.DeleteBucket(request);
}
else
{
if (!EnumerateFileSystemInfos().GetEnumerator().MoveNext() && Exists)
{
var request = new DeleteObjectRequest
{
NamespaceName = NamespaceName,
BucketName = BucketName,
ObjectName = ObjectStorageHelper.EncodeKey(ObjectKey)
};
Client.DeleteObject(request);
}
}
}
/// <summary>
/// Get the object in the bucket.
/// </summary>
/// <param name="prefix"></param>
/// <param name="searchOption"></param>
/// <param name="maxCount"></param>
/// <param name="nextStartWith"></param>
/// <returns></returns>
private List <ObjectSummary> GetOciObjects(string prefix, SearchOption searchOption, int maxCount, string nextStartWith = "")
{
var res = new List <ObjectSummary>();
if (maxCount == -1)
{
maxCount = GET_OBJECT_LIMIT;
}
string delimiter = "";
var prefixReg = ObjectStorageHelper.EncodeKey(prefix);
if (prefixReg.Contains("/"))
{
delimiter = "/";
}
var listObjectsRequest = new ListObjectsRequest()
{
NamespaceName = NamespaceName,
BucketName = BucketName,
Start = nextStartWith,
Delimiter = delimiter,
Prefix = prefixReg,
Fields = new List <string> {
"name", "size", "timeCreated", "md5"
},
Limit = maxCount
};
var objects = Client.ListObjects(listObjectsRequest);
if (searchOption == SearchOption.TopDirectoryOnly)
{
foreach (var o in objects.ListObjects.Objects)
{
if (CheckAddObject(o, prefixReg, searchOption))
{
res.Add(o);
}
}
}
else
{
foreach (var o in objects.ListObjects.Objects)
{
if (CheckAddObject(o, prefixReg, searchOption))
{
res.Add(o);
}
}
}
NextPageId = objects.ListObjects.NextStartWith;
// next check
if (!string.IsNullOrEmpty(objects.ListObjects.NextStartWith))
{
if (maxCount == -1)
{
res.AddRange(GetOciObjects(ObjectStorageHelper.DecodeKey(prefix), searchOption, maxCount, objects.ListObjects.NextStartWith));
}
}
if (objects.ListObjects.Prefixes != null && objects.ListObjects.Prefixes.Count > 0)
{
// all sub prefix
if (searchOption == SearchOption.AllDirectories)
{
foreach (var pre in objects.ListObjects.Prefixes)
{
res.AddRange(GetOciObjects(pre, searchOption, maxCount));
}
}
else
{
var newPrefix = objects.ListObjects.Prefixes.Where(p => p == prefixReg + "/");
if (newPrefix != null && newPrefix.Count() > 0)
{
foreach (var pre in newPrefix)
{
res.AddRange(GetOciObjects(pre, searchOption, maxCount));
}
}
}
}
return(res);
}
/// <summary>
/// Returns the directory in the s-bucket to the specified pattern
/// </summary>
/// <param name="searchPattern"></param>
/// <param name="searchOption"></param>
/// <returns></returns>
public IEnumerable <ObjectStorageDirectoryInfo> EnumerateDirectories(string searchPattern, SearchOption searchOption)
{
IEnumerable <ObjectStorageDirectoryInfo> folders = null;
if (String.IsNullOrEmpty(BucketName))
{
var request = new ListBucketsRequest();
folders = Client.ListBuckets(request).Items
.ConvertAll(bucket => new ObjectStorageDirectoryInfo(Client, NamespaceName, bucket.Name, ""));
}
else
{
var prefixs = GetOciPrefixs(ObjectKey, searchOption);
folders = prefixs.ToList()
.ConvertAll(f => new ObjectStorageDirectoryInfo(Client, NamespaceName, BucketName, ObjectStorageHelper.DecodeKey(f)));
}
//filter based on search pattern
var regEx = WildcardToRegex(searchPattern);
folders = folders.Where(f => Regex.IsMatch(f.Name, regEx, RegexOptions.IgnoreCase));
return(folders);
}
/// <summary>
/// returns files in a directory according to the specified search pattern
/// </summary>
/// <param name="searchPattern"></param>
/// <param name="searchOption"></param>
/// <param name="maxCount"></param>
/// <param name="nextPageId"></param>
/// <returns></returns>
public IEnumerable <ObjectStorageFileInfo> EnumerateFiles(string searchPattern, SearchOption searchOption, int maxCount, string nextPageId)
{
IEnumerable <ObjectStorageFileInfo> files = null;
if (String.IsNullOrEmpty(BucketName))
{
files = new List <ObjectStorageFileInfo>();
}
else
{
var metaFiles = GetOciObjects(ObjectKey, searchOption, maxCount, nextPageId).Where(f => !f.Name.EndsWith("/")).ToList();
files = new EnumerableConverter <ObjectSummary, ObjectStorageFileInfo>
(metaFiles, o => new ObjectStorageFileInfo(Client, NamespaceName, BucketName, ObjectStorageHelper.DecodeKey(o.Name)));
}
var regEx = WildcardToRegex(searchPattern);
files = files.Where(o => Regex.IsMatch(o.Name, regEx, RegexOptions.IgnoreCase));
return(files);
}
internal bool ExistsWithBucketCheck(out bool bucketExists)
{
bucketExists = true;
try
{
if (String.IsNullOrEmpty(BucketName))
{
return(true);
}
else if (String.IsNullOrEmpty(ObjectKey))
{
var getBucketRequest = new HeadBucketRequest
{
NamespaceName = NamespaceName,
BucketName = BucketName
};
try
{
Client.HeadBucket(getBucketRequest);
return(true);
}
catch (WebException we)
{
if (we.Status.Equals(WebExceptionStatus.ProtocolError) && ((HttpWebResponse)we.Response).StatusCode == HttpStatusCode.NotFound)
{
return(false);
}
throw;
}
}
else
{
var request = new ListObjectsRequest()
{
NamespaceName = NamespaceName,
BucketName = BucketName,
Delimiter = "/",
Prefix = ObjectStorageHelper.EncodeKey(ObjectKey),
Limit = 1
};
var response = Client.ListObjects(request);
return(response.ListObjects.Objects.Count > 0 || response.ListObjects.Prefixes.Count > 0);
}
}
catch (WebException we)
{
if (we.Status.Equals(WebExceptionStatus.ProtocolError) && ((HttpWebResponse)we.Response).StatusCode == HttpStatusCode.NotFound)
{
return(false);
}
else
{
throw;
}
}
catch (Exception e)
{
if (string.Equals(e.Message, "NoSuchBucket"))
{
return(false);
}
else
{
throw;
}
}
}