public VerifyChecksumsResponse(VerifyChecksumsExecute execute) : base(execute.Request)
{
Files = execute.Files;
Errors = execute.Exceptions;
InputFileUri = execute.InputFileUri;
}
public VerifyChecksumsResponse Execute(VerifyChecksumsRequest request)
{
var execute = new VerifyChecksumsExecute(request);
Validate(execute);
Execute(execute);
return(new VerifyChecksumsResponse(execute));
}
private void Validate(VerifyChecksumsExecute execute)
{
// check input uri
var uri = execute.Request.FileUri;
if (String.IsNullOrWhiteSpace(uri))
{
throw new Exception($"Input URI is not provided");
}
if (!File.Exists(uri))
{
throw new Exception($"Input URI '{uri}' is not accessible");
}
// find first parsable line of file
using (var read = File.OpenText(uri))
{
var found = false;
while (!found && read.Peek() > 0)
{
var line = read.ReadLine();
if (!String.IsNullOrEmpty(line) && !line.StartsWith("#")) // skip comments
{
// replace tabs if exists
int len = 0;
var fix = line.Replace('\t', ' ');
// check first 40 characters is hex + 41 is space
if (len == 0 && fix.Length > 40)
{
if (IsHexidecimal(fix.Substring(0, 40)) && fix[40] == ' ')
{
len = 40;
}
}
// check first 32 characters is hex + 33 is space
if (len == 0 && fix.Length > 32)
{
if (IsHexidecimal(fix.Substring(0, 32)) && fix[32] == ' ')
{
len = 32;
}
}
// check if we have a hash formula
if (len > 0)
{
// set up hash comparison type
execute.HashType = len == 40
? HashType.Sha1
: HashType.Md5;
// check file name exists
var file = fix.Substring(len + 1).Trim();
if (file.Length == 0)
{
throw new Exception($"Input file does not contain a valid file paths");
}
found = true;
}
else
{
throw new Exception($"Input file does not contain a valid checksum format");
}
}
}
}
// save input file uri
execute.InputFileUri = uri;
// check excel file
if (execute.Request.Report)
{
var now = DateTime.Now;
var excel = $"{uri}_{now:yyyyMMdd}-{now:HHmmss}.xlsx";
if (File.Exists(excel))
{
throw new Exception($"Output report file '{excel}' already exists");
}
execute.ReportFileUri = excel;
}
}
private void Execute(VerifyChecksumsExecute execute)
{
// set up reporting
ParseExcel report = null;
if (execute.Request.Report)
{
report = new ParseExcel();
report.StartFileSheet();
}
var hasher = execute.HashType.ToString();
using (var algorithm = HashCalc.GetHashAlgorithm(execute.HashType))
{
// query file system
var query = new QueryHashSystem();
var queryResult = query.Execute(execute.InputFileUri);
// enumerate and hash files
int fileCount = 0;
long totalDataProcessed = 0;
var files = new List <FileInfo>();
foreach (var entry in queryResult.Entries)
{
var fileName = entry.Key;
var file = new FileInfo(fileName);
files.Add(file);
var status = "PREVIEW";
//execute.AddState(execute.Request, )
//UpdateState(execute.Request, )
try
{
fileCount++;
var log = new StringBuilder();
log.Append($"{fileCount}. {fileName} -> {hasher} = ");
// calculate hash and output hash to log
var hash = hasher;
string error = null;
if (!execute.Request.Preview)
{
try
{
hash = HashCalc.GetHash(fileName, algorithm);
var match = (String.Compare(hash, entry.Value, true) == 0);
if (match)
{
status = "VALID";
}
else
{
error = "Hash Invalid";
status = "INVALID";
execute.LogError(entry.Key, new Exception(error));
}
}
catch (DirectoryNotFoundException)
{
status = "MISSING";
error = "Not Found";
}
catch (FileNotFoundException)
{
status = "MISSING";
error = "Not Found";
}
catch (Exception ex)
{
status = "ERROR";
error = ex.Message;
}
}
// write report data if requested
report?.AddFileInfo(file, status, hash, error);
// display to output
log.Append($"{hash} {status}");
execute.LogLine(log.ToString());
// update totals
totalDataProcessed += file.Length;
}
catch (Exception ex)
{
execute.LogError(entry.Key, ex);
}
}
// show output
var time = DateTime.Now.Subtract(execute.Request.Started);
var mb = totalDataProcessed / 1024.0 / 1024.0;
var gb = mb / 1024;
var tb = gb / 1024;
var gbh = gb / time.TotalHours;
var mbs = mb / time.TotalMinutes;
execute.LogLine($"==================================================");
execute.LogLine($"FILES: {files.Count:###,###,###,###,###,##0}");
execute.LogLine($"BYTES: {totalDataProcessed:###,###,###,###,###,##0} = {gb:###,###,###,###,###,##0} GB = {tb:###,###,###,###,###,##0} TB");
execute.LogLine($"TIME: {time:hh\\:mm\\:ss} H:M:S = {time.TotalSeconds:###,###,###,###,##0} SEC");
execute.LogLine($"--------------------------------------------------");
execute.LogLine($"RATE: {gbh:##,##0.0} GB/HOUR = {mbs:##,##0.0} MB/SEC");
if (execute.Exceptions.Count > 0)
{
execute.LogLine($"##################################################");
execute.LogLine($"EXCEPTIONS: {execute.Exceptions.Count()}");
}
// close out report
if (report != null)
{
execute.LogLine($"--------------------------------------------------");
execute.LogLine($"SAVING REPORT: {execute.ReportFileUri}");
report.SaveAs(execute.ReportFileUri);
}
}
}
