public override FileProperties GetFilePropertiesFromCDN(IFileQuery qryFile)
{
var blob = GetBlob(qryFile);
try
{
blob.FetchAttributes();
FileProperties props = new FileProperties();
props.MetaData = blob.Metadata;
props.Source = blob.Properties;
props.Length = blob.Properties.Length;
props.ContentMD5 = blob.Properties.ContentMD5;
props.ETag = blob.Properties.ETag;
props.ContentType = blob.Properties.ContentType;
props.LastModified = blob.Properties.LastModified;
props.Created = props.LastModified;
props.URL = blob.Uri.ToString();
return(props);
}
catch (Microsoft.Azure.Storage.StorageException ex)
{
if (ex.RequestInformation.HttpStatusCode == (int)System.Net.HttpStatusCode.NotFound)
{
return(null);
}
throw;
}
}
public override FileProperties GetFilePropertiesFromCDN(IFileQuery qryFile)
{
try
{
var objRef = S3TransferUtil.S3Client.GetObjectMetadata(GetCDNFolderPath(qryFile, true), GetFileName(qryFile));
FileProperties props = new FileProperties();
props.Source = objRef;
props.Length = objRef.ContentLength;
props.ETag = objRef.ETag;
props.VersionNumber = objRef.VersionId;
props.ContentMD5 = objRef.Headers.ContentMD5;
props.ContentType = objRef.Headers.ContentType;
props.LastModified = new DateTimeOffset(objRef.LastModified);
props.Created = props.LastModified;
props.URL = GetCDNURL(qryFile);
if (objRef.Metadata != null)
{
props.MetaData = new Dictionary <string, string>();
foreach (var key in objRef.Metadata.Keys)
{
props.MetaData.Add(key, objRef.Metadata[key]);
}
}
return(props);
}
catch (Amazon.S3.AmazonS3Exception ex)
{
if (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
{
return(null);
}
throw;
}
}
public FileProperties GetFilePropertiesLocal(IFileQuery qryFile)
{
try
{
var objFileInfo = new System.IO.FileInfo(GetLocalDiskPath(qryFile));
FileProperties props = new FileProperties();
props.Source = objFileInfo;
props.Length = objFileInfo.Length;
props.LastModified = new DateTimeOffset(objFileInfo.LastWriteTimeUtc);
props.Created = new DateTimeOffset(objFileInfo.CreationTimeUtc);
props.URL = GetLocalURL(qryFile);
return(props);
}
catch (System.IO.FileNotFoundException) { return(null); }
catch (System.IO.DirectoryNotFoundException) { return(null); }
}
public bool IsCurrentVersionOf(FileProperties fileMaster)
{
//First line of defense, different size means different versions
if (this.Length != fileMaster.Length)
{
return(false);
}
//Modify date is not reliable because the local file might retain the original modify date, while the remote CDN only stores a Create Date (the moment it was stored to the CDN)
//if (this.LastModified.HasValue && fileMaster.LastModified.HasValue)
// if (fileMaster.LastModified > this.LastModified)
// return false;
//Apparently this isn't reliable either
//if (this.Created.HasValue && fileMaster.Created.HasValue)
// if (fileMaster.Created > this.Created)
// return false;
//Now I'll do an MD5 check in some cases
if (String.IsNullOrEmpty(this.ContentMD5) && !String.IsNullOrEmpty(fileMaster.ContentMD5) && this.Source is System.IO.FileInfo)
{
if (this.Length < 10000000) //10 MB
{
//Load MD5 for local file
System.IO.FileInfo objInfo = (System.IO.FileInfo) this.Source;
using (var md5 = System.Security.Cryptography.MD5.Create())
{
using (var stream = System.IO.File.OpenRead(objInfo.FullName))
{
this.ContentMD5 = Convert.ToBase64String(md5.ComputeHash(stream));
}
}
}
}
if (!String.IsNullOrEmpty(this.ContentMD5) && !String.IsNullOrEmpty(fileMaster.ContentMD5))
{
if (fileMaster.ContentMD5 != this.ContentMD5)
{
return(false); //MD5 hash didn't match
}
}
//We'll assume they are the same, this will be accurate most of the time
return(true);
}
public bool IsCurrentVersionOf(FileProperties fileMaster)
{
//First line of defense, different size means different versions
if (this.Length != fileMaster.Length)
return false;
//Modify date is not reliable because the local file might retain the original modify date, while the remote CDN only stores a Create Date (the moment it was stored to the CDN)
//if (this.LastModified.HasValue && fileMaster.LastModified.HasValue)
// if (fileMaster.LastModified > this.LastModified)
// return false;
//Apparently this isn't reliable either
//if (this.Created.HasValue && fileMaster.Created.HasValue)
// if (fileMaster.Created > this.Created)
// return false;
//Now I'll do an MD5 check in some cases
if (String.IsNullOrEmpty(this.ContentMD5) && !String.IsNullOrEmpty(fileMaster.ContentMD5) && this.Source is System.IO.FileInfo)
{
if (this.Length < 10000000) //10 MB
{
//Load MD5 for local file
System.IO.FileInfo objInfo = (System.IO.FileInfo) this.Source;
using (var md5 = System.Security.Cryptography.MD5.Create())
{
using (var stream = System.IO.File.OpenRead(objInfo.FullName))
{
this.ContentMD5 = Convert.ToBase64String(md5.ComputeHash(stream));
}
}
}
}
if (!String.IsNullOrEmpty(this.ContentMD5) && !String.IsNullOrEmpty(fileMaster.ContentMD5))
if (fileMaster.ContentMD5 != this.ContentMD5)
return false; //MD5 hash didn't match
//We'll assume they are the same, this will be accurate most of the time
return true;
}
public FileProperties GetFilePropertiesLocal(IFileQuery qryFile)
{
try
{
var objFileInfo = new System.IO.FileInfo(GetLocalDiskPath(qryFile));
FileProperties props = new FileProperties();
props.Source = objFileInfo;
props.Length = objFileInfo.Length;
props.LastModified = new DateTimeOffset(objFileInfo.LastWriteTimeUtc);
props.Created = new DateTimeOffset(objFileInfo.CreationTimeUtc);
props.URL = GetLocalURL(qryFile);
return props;
}
catch (System.IO.FileNotFoundException) { return null; }
catch (System.IO.DirectoryNotFoundException) { return null; }
}
public override FileProperties GetFilePropertiesFromCDN(IFileQuery qryFile)
{
try
{
var objRef = S3TransferUtil.S3Client.GetObjectMetadata(GetCDNFolderPath(qryFile, true), GetFileName(qryFile));
FileProperties props = new FileProperties();
props.Source = objRef;
props.Length = objRef.ContentLength;
props.ETag = objRef.ETag;
props.VersionNumber = objRef.VersionId;
props.ContentMD5 = objRef.Headers.ContentMD5;
props.ContentType = objRef.Headers.ContentType;
props.LastModified = new DateTimeOffset(objRef.LastModified);
props.Created = props.LastModified;
props.URL = GetCDNURL(qryFile);
if (objRef.Metadata != null)
{
props.MetaData = new Dictionary<string, string>();
foreach (var key in objRef.Metadata.Keys) {
props.MetaData.Add(key, objRef.Metadata[key]);
}
}
return props;
}
catch (Amazon.S3.AmazonS3Exception ex)
{
if (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
return null;
throw;
}
}
