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Program.cs
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//
// Copyright (c) Roland Pihlakas 2019 - 2022
//
// Roland Pihlakas licenses this file to you under the GNU Lesser General Public License, ver 2.1.
// See the LICENSE file for more information.
//
#define ASYNC
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using Dasync.Collections;
using Microsoft.Extensions.Configuration;
using myoddweb.directorywatcher;
using myoddweb.directorywatcher.interfaces;
using Nito.AspNetBackgroundTasks;
using Nito.AsyncEx;
using NReco.Text;
namespace AsyncToSyncCodeRoundtripSynchroniserMonitor
{
#pragma warning disable S2223 //Warning S2223 Change the visibility of 'xxx' or make it 'const' or 'readonly'.
internal static class Global
{
public static IConfigurationRoot Configuration;
public static readonly CancellationTokenSource CancellationToken = new CancellationTokenSource();
public static bool UseIdlePriority = false;
public static List<long> Affinity = new List<long>();
public static bool ShowErrorAlerts = true;
public static bool LogInitialScan = false;
public static bool LogToFile = false;
public static bool AddTimestampToNormalLogEntries = true;
public static int RetryCountOnSrcFileOpenError = 10;
public static long MaxFileSizeMB = 2048;
public static HashSet<string> WatchedCodeExtension = new HashSet<string>() { "cs", "py" };
public static HashSet<string> WatchedResXExtension = new HashSet<string>() { "resx" };
public static HashSet<string> ExcludedExtensions = new HashSet<string>() { "*~", "tmp" };
public static List<string> IgnorePathsStartingWithList = new List<string>();
public static List<string> IgnorePathsContainingList = new List<string>();
public static List<string> IgnorePathsEndingWithList = new List<string>();
public static bool IgnorePathsContainingACHasAny = false;
public static AhoCorasickDoubleArrayTrie<bool> IgnorePathsContainingAC = new AhoCorasickDoubleArrayTrie<bool>();
public static string AsyncPath = "";
public static string SyncPath = "";
public static long AsyncPathMinFreeSpace = 0;
public static long SyncPathMinFreeSpace = 0;
public static bool Bidirectional = true;
public static bool? CaseSensitiveFilenames = null; //null: default behaviour depending on OS
internal static readonly AsyncLockQueueDictionary<string> FileOperationLocks = new AsyncLockQueueDictionary<string>();
//internal static readonly AsyncLock FileOperationAsyncLock = new AsyncLock();
internal static readonly AsyncSemaphore FileOperationSemaphore = new AsyncSemaphore(2); //allow 2 concurrent file synchronisations: while one is finishing the write, the next one can start the read
}
#pragma warning restore S2223
class DummyFileSystemEvent : IFileSystemEvent
{
[DebuggerStepThrough]
public DummyFileSystemEvent(FileSystemInfo fileSystemInfo)
{
FileSystemInfo = fileSystemInfo;
FullName = fileSystemInfo.FullName;
Name = fileSystemInfo.Name;
Action = EventAction.Added;
Error = EventError.None;
DateTimeUtc = DateTime.UtcNow;
IsFile = true;
}
public FileSystemInfo FileSystemInfo { [DebuggerStepThrough]get; }
public string FullName { [DebuggerStepThrough]get; }
public string Name { [DebuggerStepThrough]get; }
public EventAction Action { [DebuggerStepThrough]get; }
public EventError Error { [DebuggerStepThrough]get; }
public DateTime DateTimeUtc { [DebuggerStepThrough]get; }
public bool IsFile { [DebuggerStepThrough]get; }
[DebuggerStepThrough]
public bool Is(EventAction action)
{
return action == Action;
}
}
internal class Program
{
//let null char mark start and end of a filename
//https://stackoverflow.com/questions/54205087/how-can-i-create-a-file-with-null-bytes-in-the-filename
//https://stackoverflow.com/questions/1976007/what-characters-are-forbidden-in-windows-and-linux-directory-names
//https://serverfault.com/questions/242110/which-common-characters-are-illegal-in-unix-and-windows-filesystems
public static readonly string NullChar = new string(new char[] { (char)0 });
public static readonly string DirectorySeparatorChar = new string(new char[] { Path.DirectorySeparatorChar });
private static byte[] GetHash(string inputString)
{
#pragma warning disable SCS0006 //Warning SCS0006 Weak hashing function
HashAlgorithm algorithm = MD5.Create();
#pragma warning restore SCS0006
return algorithm.ComputeHash(Encoding.UTF8.GetBytes(inputString));
}
public static string GetHashString(string inputString)
{
StringBuilder sb = new StringBuilder();
foreach (byte b in GetHash(inputString))
sb.Append(b.ToString("X2"));
return sb.ToString();
}
private static void Main()
{
//var environmentName = Environment.GetEnvironmentVariable("Hosting:Environment");
var configBuilder = new ConfigurationBuilder()
//.SetBasePath(System.IO.Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json")
//.AddJsonFile($"appsettings.{environmentName}.json", true)
//.AddEnvironmentVariables()
;
var config = configBuilder.Build();
Global.Configuration = config;
var fileConfig = config.GetSection("Files");
Global.UseIdlePriority = fileConfig.GetTextUpper("UseIdlePriority") == "TRUE"; //default is false
Global.Affinity = fileConfig.GetLongList("Affinity");
Global.ShowErrorAlerts = fileConfig.GetTextUpper("ShowErrorAlerts") != "FALSE"; //default is true
Global.LogInitialScan = fileConfig.GetTextUpper("LogInitialScan") == "TRUE"; //default is false
Global.LogToFile = fileConfig.GetTextUpper("LogToFile") == "TRUE"; //default is false
Global.AddTimestampToNormalLogEntries = fileConfig.GetTextUpper("AddTimestampToNormalLogEntries") != "FALSE"; //default is true
Global.MaxFileSizeMB = fileConfig.GetLong("MaxFileSizeMB") ?? Global.MaxFileSizeMB;
Global.RetryCountOnSrcFileOpenError = (int?)fileConfig.GetLong("RetryCountOnSrcFileOpenError") ?? Global.RetryCountOnSrcFileOpenError;
Global.Bidirectional = fileConfig.GetTextUpper("Bidirectional") != "FALSE"; //default is true
if (!string.IsNullOrWhiteSpace(fileConfig.GetTextUpper("CaseSensitiveFilenames"))) //default is null
Global.CaseSensitiveFilenames = fileConfig.GetTextUpper("CaseSensitiveFilenames") == "TRUE";
Global.AsyncPath = Extensions.GetDirPathWithTrailingSlash(fileConfig.GetTextUpperOnWindows(Global.CaseSensitiveFilenames, "AsyncPath"));
Global.SyncPath = Extensions.GetDirPathWithTrailingSlash(fileConfig.GetTextUpperOnWindows(Global.CaseSensitiveFilenames, "SyncPath"));
Global.AsyncPathMinFreeSpace = fileConfig.GetLong("AsyncPathMinFreeSpace") ?? 0;
Global.SyncPathMinFreeSpace = fileConfig.GetLong("SyncPathMinFreeSpace") ?? 0;
Global.WatchedCodeExtension = new HashSet<string>(fileConfig.GetListUpperOnWindows(Global.CaseSensitiveFilenames, "WatchedCodeExtensions", "WatchedCodeExtension"));
Global.WatchedResXExtension = new HashSet<string>(fileConfig.GetListUpperOnWindows(Global.CaseSensitiveFilenames, "WatchedResXExtensions", "WatchedResXExtension"));
//this would need Microsoft.Extensions.Configuration and Microsoft.Extensions.Configuration.Binder packages
Global.ExcludedExtensions = new HashSet<string>(fileConfig.GetListUpperOnWindows(Global.CaseSensitiveFilenames, "ExcludedExtensions", "ExcludedExtension")); //NB! UpperOnWindows
Global.IgnorePathsStartingWithList = fileConfig.GetListUpperOnWindows(Global.CaseSensitiveFilenames, "IgnorePathsStartingWith", "IgnorePathStartingWith"); //NB! UpperOnWindows
Global.IgnorePathsContainingList = fileConfig.GetListUpperOnWindows(Global.CaseSensitiveFilenames, "IgnorePathsContaining", "IgnorePathContaining"); //NB! UpperOnWindows
Global.IgnorePathsEndingWithList = fileConfig.GetListUpperOnWindows(Global.CaseSensitiveFilenames, "IgnorePathsEndingWith", "IgnorePathEndingWith"); //NB! UpperOnWindows
var ACInput = Global.IgnorePathsStartingWithList.Select(x => new KeyValuePair<string, bool>(NullChar + x, false))
.Concat(Global.IgnorePathsContainingList.Select(x => new KeyValuePair<string, bool>(x, false)))
.Concat(Global.IgnorePathsEndingWithList.Select(x => new KeyValuePair<string, bool>(x + NullChar, false)))
.ToList();
if (ACInput.Any()) //needed to avoid exceptions
{
Global.IgnorePathsContainingACHasAny = true;
Global.IgnorePathsContainingAC.Build(ACInput);
}
var pathHashes = "";
pathHashes += "_" + GetHashString(Global.AsyncPath);
pathHashes += "_" + GetHashString(Global.SyncPath);
//NB! prevent multiple instances from starting on same directories
using (Mutex mutex = new Mutex(false, "Global\\AsyncToSyncCodeRoundtripSynchroniserMonitor_" + pathHashes))
{
if (!mutex.WaitOne(0, false))
{
Console.WriteLine("Instance already running");
}
else
{
MainTask().Wait();
}
}
}
private static async Task MainTask()
{
try
{
//Console.WriteLine(Environment.Is64BitProcess ? "x64 version" : "x86 version");
Console.WriteLine("Press Ctrl+C to stop the monitors.");
if (Global.UseIdlePriority)
{
try
{
var CurrentProcess = Process.GetCurrentProcess();
CurrentProcess.PriorityClass = ProcessPriorityClass.Idle;
CurrentProcess.PriorityBoostEnabled = false;
if (ConfigParser.IsWindows)
{
WindowsDllImport.SetIOPriority(CurrentProcess.Handle, WindowsDllImport.PROCESSIOPRIORITY.PROCESSIOPRIORITY_VERY_LOW);
}
}
catch (Exception)
{
Console.WriteLine("Unable to set idle priority.");
}
}
if (Global.Affinity.Count > 0)
{
try
{
var CurrentProcess = Process.GetCurrentProcess();
long affinityMask = 0;
foreach (var affinityEntry in Global.Affinity)
{
if (affinityEntry < 0 || affinityEntry > 63)
throw new ArgumentException("Affinity");
affinityMask |= (long)1 << (int)affinityEntry;
}
CurrentProcess.ProcessorAffinity = new IntPtr(affinityMask);
}
catch (Exception)
{
Console.WriteLine("Unable to set affinity.");
}
}
ThreadPool.SetMaxThreads(16, 16); //TODO: config
//start the monitor.
using (var watch = new Watcher())
{
watch.Add(new Request(Extensions.GetLongPath(Global.SyncPath), recursive: true));
if (Global.Bidirectional)
{
watch.Add(new Request(Extensions.GetLongPath(Global.AsyncPath), recursive: true));
}
// prepare the console watcher so we can output pretty messages.
var consoleWatch = new ConsoleWatch(watch);
//start watching
//NB! start watching before synchronisation
watch.Start();
var initialSyncMessageContext = new Context(
eventObj: null,
token: Global.CancellationToken.Token,
isSyncPath: false, //unused here
isInitialScan: true
);
BackgroundTaskManager.Run(async () =>
{
await ConsoleWatch.AddMessage(ConsoleColor.White, "Doing initial synchronisation...", initialSyncMessageContext);
await ScanFolders(initialSyncMessageContext: initialSyncMessageContext);
BackgroundTaskManager.Run(async () =>
{
await InitialSyncCountdownEvent.WaitAsync(Global.CancellationToken.Token);
//if (!Global.CancellationToken.IsCancellationRequested)
await ConsoleWatch.AddMessage(ConsoleColor.White, "Done initial synchronisation...", initialSyncMessageContext);
});
}); //BackgroundTaskManager.Run(async () =>
//listen for the Ctrl+C
await WaitForCtrlC();
Console.WriteLine("Stopping...");
//stop everything.
watch.Stop();
Console.WriteLine("Exiting...");
GC.KeepAlive(consoleWatch);
Environment.Exit(0);
}
}
catch (Exception ex)
{
await WriteException(ex);
}
} //private static async Task MainTask()
private static readonly AsyncCountdownEvent InitialSyncCountdownEvent = new AsyncCountdownEvent(1);
private static async Task ScanFolders(Context initialSyncMessageContext)
{
//1. Do initial synchronisation from sync to async folder //TODO: config for enabling and ordering of this operation
await ScanFolder(Global.SyncPath, "*.*", initialSyncMessageContext: initialSyncMessageContext); //NB! use *.* in order to sync resx files also
if (Global.Bidirectional)
{
//2. Do initial synchronisation from async to sync folder //TODO: config for enabling and ordering of this operation
await ScanFolder(Global.AsyncPath, "*.*", initialSyncMessageContext: initialSyncMessageContext); //NB! use *.* in order to sync resx files also
}
if (initialSyncMessageContext?.IsInitialScan == true)
InitialSyncCountdownEvent.Signal();
}
private static async Task ScanFolder(string path, string extension, Context initialSyncMessageContext)
{
var fileInfos = ProcessSubDirs(new DirectoryInfo(Extensions.GetLongPath(path)), extension, initialSyncMessageContext: initialSyncMessageContext);
await fileInfos.ForEachAsync(fileInfo =>
{
if (initialSyncMessageContext?.IsInitialScan == true)
InitialSyncCountdownEvent.AddCount();
BackgroundTaskManager.Run(async () =>
{
await ConsoleWatch.OnAddedAsync
(
new DummyFileSystemEvent(fileInfo),
Global.CancellationToken.Token,
initialSyncMessageContext?.IsInitialScan == true
);
if (initialSyncMessageContext?.IsInitialScan == true)
InitialSyncCountdownEvent.Signal();
});
});
}
private static IAsyncEnumerable<FileInfo> ProcessSubDirs(DirectoryInfo srcDirInfo, string searchPattern, int recursionLevel = 0, Context initialSyncMessageContext = null)
{
return new AsyncEnumerable<FileInfo>(async yield => {
if (Global.LogInitialScan && initialSyncMessageContext?.IsInitialScan == true)
await ConsoleWatch.AddMessage(ConsoleColor.Blue, "Scanning folder " + Extensions.GetLongPath(srcDirInfo.FullName), initialSyncMessageContext);
#if false //this built-in functio will throw IOException in case some subfolder is an invalid reparse point
return new DirectoryInfo(sourceDir)
.GetFiles(searchPattern, SearchOption.AllDirectories);
#else
//Directory.GetFileSystemEntries would not help here since it returns only strings, not FileInfos
//TODO: under Windows10 use https://github.com/ljw1004/uwp-desktop for true async dirlists
FileInfo[] fileInfos;
try
{
fileInfos = await Extensions.FSOperation
(
() => srcDirInfo.GetFiles(searchPattern, SearchOption.TopDirectoryOnly),
Global.CancellationToken.Token
);
}
catch (Exception ex) when (ex is DirectoryNotFoundException || ex is UnauthorizedAccessException)
{
//UnauthorizedAccessException can also occur when a folder was just created, but it can still be ignored here since then file add handler will take care of that folder
fileInfos = Array.Empty<FileInfo>();
}
foreach (var fileInfo in fileInfos)
{
await yield.ReturnAsync(fileInfo);
}
DirectoryInfo[] dirInfos;
#pragma warning disable S2327 //Warning S2327 Combine this 'try' with the one starting on line XXX.
try
{
dirInfos = await Extensions.FSOperation
(
() => srcDirInfo.GetDirectories("*", SearchOption.TopDirectoryOnly),
Global.CancellationToken.Token
);
}
catch (Exception ex) when (ex is DirectoryNotFoundException || ex is UnauthorizedAccessException)
{
//UnauthorizedAccessException can also occur when a folder was just created, but it can still be ignored here since then file add handler will take care of that folder
dirInfos = Array.Empty<DirectoryInfo>();
}
#pragma warning restore S2327
foreach (var dirInfo in dirInfos)
{
//TODO: option to follow reparse points
if ((dirInfo.Attributes & FileAttributes.ReparsePoint) == FileAttributes.ReparsePoint)
continue;
var nonFullNameInvariantWithLeadingSlash = DirectorySeparatorChar + Extensions.GetDirPathWithTrailingSlash(ConsoleWatch.GetNonFullName(dirInfo.FullName.ToUpperInvariantOnWindows(Global.CaseSensitiveFilenames)));
if (
//Global.IgnorePathsStartingWith.Any(x => nonFullNameInvariantWithLeadingSlash.StartsWith(x))
//|| Global.IgnorePathsContaining.Any(x => nonFullNameInvariantWithLeadingSlash.Contains(x))
//|| Global.IgnorePathsEndingWith.Any(x => nonFullNameInvariantWithLeadingSlash.EndsWith(x))
Global.IgnorePathsContainingACHasAny //needed to avoid exceptions
&& Global.IgnorePathsContainingAC.ParseText(NullChar + nonFullNameInvariantWithLeadingSlash/* + NullChar*/).Any() //NB! no NullChar appended to end since it is dir path not complete file path
)
{
continue;
}
var subDirFileInfos = ProcessSubDirs(dirInfo, searchPattern, recursionLevel + 1, initialSyncMessageContext: initialSyncMessageContext);
await subDirFileInfos.ForEachAsync(async subDirFileInfo =>
{
await yield.ReturnAsync(subDirFileInfo);
});
} //foreach (var dirInfo in dirInfos)
#endif
}); //return new AsyncEnumerable<int>(async yield => {
} //private static IEnumerable<FileInfo> ProcessSubDirs(DirectoryInfo srcDirInfo, string searchPattern, bool forHistory, int recursionLevel = 0)
private static async Task WriteException(Exception ex_in)
{
var ex = ex_in;
if (ex is TaskCanceledException && Global.CancellationToken.IsCancellationRequested)
return;
if (ex is AggregateException aggex)
{
await WriteException(aggex.InnerException);
foreach (var aggexInner in aggex.InnerExceptions)
{
await WriteException(aggexInner);
}
return;
}
ex = ex_in; //TODO: refactor to shared function
var message = new StringBuilder();
message.Append(DateTime.Now);
message.AppendLine(" Unhandled exception: ");
message.AppendLine(ex.GetType().ToString());
message.AppendLine(ex.Message);
message.AppendLine("Stack Trace:");
message.AppendLine(ex.StackTrace);
while (ex.InnerException != null)
{
message.AppendLine("");
message.Append("Inner exception: ");
message.Append(ex.GetType().ToString());
message.AppendLine(": ");
message.AppendLine(ex.InnerException.Message);
message.AppendLine("Inner exception stacktrace: ");
message.AppendLine(ex.InnerException.StackTrace);
ex = ex.InnerException; //loop
}
message.AppendLine("");
using (await ConsoleWatch.Lock.LockAsync(Global.CancellationToken.Token))
{
await FileExtensions.AppendAllTextAsync
(
"UnhandledExceptions.log",
message.ToString(),
Global.CancellationToken.Token
);
}
//Console.WriteLine(ex.Message);
message.Clear(); //TODO: refactor to shared function
message.Append(ex.Message.ToString());
while (ex.InnerException != null)
{
ex = ex.InnerException;
//Console.WriteLine(ex.Message);
message.AppendLine("");
message.Append(ex.Message);
}
var time = DateTime.Now;
var msg = message.ToString();
await AddMessage(ConsoleColor.Red, msg, time, showAlert: true, addTimestamp: true);
}
private static async Task AddMessage(ConsoleColor color, string message, DateTime time, bool showAlert = false, bool addTimestamp = false, CancellationToken? token = null, bool suppressLogFile = false)
{
if (addTimestamp || Global.AddTimestampToNormalLogEntries)
{
message = $"[{time:yyyy.MM.dd HH:mm:ss.ffff}] : {message}";
}
//await Task.Run(() =>
{
using (await ConsoleWatch.Lock.LockAsync(Global.CancellationToken.Token))
{
if (Global.LogToFile && !suppressLogFile)
{
await FileExtensions.AppendAllTextAsync
(
"Console.log",
message,
token ?? Global.CancellationToken.Token
);
}
try
{
Console.ForegroundColor = color;
Console.WriteLine(message);
if (
showAlert
&& Global.ShowErrorAlerts
&& (ConsoleWatch.PrevAlertTime != time || ConsoleWatch.PrevAlertMessage != message)
)
{
MessageBox.Show(message, "AsyncToSyncCodeRoundtripSynchroniserMonitor");
}
}
catch (Exception e)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(e.Message);
}
finally
{
Console.ForegroundColor = ConsoleWatch._consoleColor;
}
}
}//)
//.WaitAsync(Global.CancellationToken.Token);
}
private static Task WaitForCtrlC()
{
var exitEvent = new AsyncManualResetEvent(false);
Console.CancelKeyPress += delegate (object sender, ConsoleCancelEventArgs e)
{
Global.CancellationToken.Cancel();
e.Cancel = true;
Console.WriteLine("Stop detected.");
exitEvent.Set();
};
return exitEvent.WaitAsync();
}
}
internal class FileInfoRef
{
public FileInfo Value;
public CancellationToken Token;
[DebuggerStepThrough]
public FileInfoRef(FileInfo value, CancellationToken token)
{
Value = value;
Token = token;
}
}
internal class Context
{
public readonly IFileSystemEvent Event;
public readonly CancellationToken Token;
public readonly bool IsSyncPath;
public readonly bool IsInitialScan;
public FileSystemInfo FileInfo;
public bool FileInfoRefreshed;
public FileInfo OtherFileInfo;
public DateTime Time
{
[DebuggerStepThrough]
get
{
return Event?.DateTimeUtc ?? DateTime.UtcNow;
}
}
[DebuggerStepThrough]
#pragma warning disable CA1068 //should take CancellationToken as the last parameter
public Context(IFileSystemEvent eventObj, CancellationToken token, bool isSyncPath, bool isInitialScan)
#pragma warning restore CA1068
{
Event = eventObj;
Token = token;
IsSyncPath = isSyncPath;
IsInitialScan = isInitialScan;
FileInfo = eventObj.FileSystemInfo;
//FileInfo type is a file from directory scan and has stale file length.
//NB! if FileInfo is null then it is okay to set FileInfoRefreshed = true since if will be populated later with up-to-date information
FileInfoRefreshed = !(FileInfo is FileInfo);
}
}
internal class ConsoleWatch
{
/// <summary>
/// The original console color
/// </summary>
internal static readonly ConsoleColor _consoleColor = Console.ForegroundColor;
/// <summary>
/// We need a static lock so it is shared by all.
/// </summary>
internal static readonly AsyncLock Lock = new AsyncLock();
internal static DateTime PrevAlertTime;
internal static string PrevAlertMessage;
private static readonly ConcurrentDictionary<string, DateTime> BidirectionalConverterSavedFileDates = new ConcurrentDictionary<string, DateTime>();
private static readonly AsyncLockQueueDictionary<string> FileEventLocks = new AsyncLockQueueDictionary<string>();
#pragma warning disable S1118 //Warning S1118 Hide this public constructor by making it 'protected'.
public ConsoleWatch(IWatcher3 watch)
#pragma warning restore S1118
{
//_consoleColor = Console.ForegroundColor;
//watch.OnErrorAsync += OnErrorAsync;
watch.OnAddedAsync += (fse, token) => OnAddedAsync(fse, token, isInitialScan: false);
watch.OnRemovedAsync += OnRemovedAsync;
watch.OnRenamedAsync += OnRenamedAsync;
watch.OnTouchedAsync += OnTouchedAsync;
}
#if false
private async Task OnErrorAsync(IEventError ee, CancellationToken token)
{
try
{
await AddMessage(ConsoleColor.Red, $"[!]:{ee.Message}", context);
}
catch (Exception ex)
{
await WriteException(ex, context);
}
}
#endif
public static async Task WriteException(Exception ex_in, Context context)
{
var ex = ex_in;
//if (ConsoleWatch.DoingInitialSync) //TODO: config
// return;
if (ex is TaskCanceledException && Global.CancellationToken.IsCancellationRequested)
return;
if (ex is AggregateException aggex)
{
await WriteException(aggex.InnerException, context);
foreach (var aggexInner in aggex.InnerExceptions)
{
await WriteException(aggexInner, context);
}
return;
}
ex = ex_in; //TODO: refactor to shared function
var message = new StringBuilder();
message.Append(DateTime.Now);
message.AppendLine(" Unhandled exception: ");
message.AppendLine(ex.GetType().ToString());
message.AppendLine(ex.Message);
message.AppendLine("Stack Trace:");
message.AppendLine(ex.StackTrace);
while (ex.InnerException != null)
{
message.AppendLine("");
message.Append("Inner exception: ");
message.Append(ex.GetType().ToString());
message.AppendLine(": ");
message.AppendLine(ex.InnerException.Message);
message.AppendLine("Inner exception stacktrace: ");
message.AppendLine(ex.InnerException.StackTrace);
ex = ex.InnerException; //loop
}
message.AppendLine("");
using (await ConsoleWatch.Lock.LockAsync(context.Token))
{
await FileExtensions.AppendAllTextAsync
(
"UnhandledExceptions.log",
message.ToString(),
context.Token
);
}
//Console.WriteLine(ex.Message);
message.Clear(); //TODO: refactor to shared function
message.Append(ex.Message.ToString());
while (ex.InnerException != null)
{
ex = ex.InnerException;
//Console.WriteLine(ex.Message);
message.AppendLine("");
message.Append(ex.Message);
}
var msg = $"{context.Event?.FullName} : {message}";
await AddMessage(ConsoleColor.Red, msg, context, showAlert: true, addTimestamp: true);
}
public static bool IsAsyncPath(string fullNameInvariant)
{
return Extensions.GetLongPath(fullNameInvariant).StartsWith(Extensions.GetLongPath(Global.AsyncPath));
}
public static bool IsSyncPath(string fullNameInvariant)
{
return Extensions.GetLongPath(fullNameInvariant).StartsWith(Extensions.GetLongPath(Global.SyncPath));
}
public static string GetNonFullName(string fullName)
{
var fullNameInvariant = fullName.ToUpperInvariantOnWindows(Global.CaseSensitiveFilenames);
if (IsAsyncPath(fullNameInvariant))
{
return fullName.Substring(Extensions.GetLongPath(Global.AsyncPath).Length);
}
else if (IsSyncPath(fullNameInvariant))
{
return fullName.Substring(Extensions.GetLongPath(Global.SyncPath).Length);
}
else
{
throw new ArgumentException("fullName");
}
}
public static string GetOtherFullName(Context context)
{
var fullNameInvariant = context.Event.FullName.ToUpperInvariantOnWindows(Global.CaseSensitiveFilenames);
var nonFullName = GetNonFullName(context.Event.FullName);
if (IsAsyncPath(fullNameInvariant))
{
return Path.Combine(Global.SyncPath, nonFullName);
}
else if (IsSyncPath(fullNameInvariant))
{
return Path.Combine(Global.AsyncPath, nonFullName);
}
else
{
throw new ArgumentException("fullName");
}
}
public static async Task DeleteFile(FileInfoRef otherFileInfo, string otherFullName, Context context)
{
try
{
otherFullName = Extensions.GetLongPath(otherFullName);
while (true)
{
context.Token.ThrowIfCancellationRequested();
try
{
var backupFileInfo = new FileInfoRef(null, context.Token);
if (await GetFileExists(backupFileInfo, otherFullName + "~"))
{
#pragma warning disable SEC0116 //Warning SEC0116 Unvalidated file paths are passed to a file delete API, which can allow unauthorized file system operations (e.g. read, write, delete) to be performed on unintended server files.
await Extensions.FSOperation(() => File.Delete(otherFullName + "~"), context.Token);
#pragma warning restore SEC0116
}
//fileInfo?.Refresh();
if (await GetFileExists(otherFileInfo, otherFullName))
{
await Extensions.FSOperation(() => File.Move(otherFullName, otherFullName + "~"), context.Token);
}
return;
}
catch (IOException)
{
//retry after delay
#if !NOASYNC
await Task.Delay(1000, context.Token); //TODO: config file?
#else
context.Token.WaitHandle.WaitOne(1000);
#endif
}
}
}
catch (Exception ex)
{
await WriteException(ex, context);
}
} //public static async Task DeleteFile(string fullName, Context context)
public static DateTime GetBidirectionalConverterSaveDate(string fullName)
{
DateTime converterSaveDate;
if (!BidirectionalConverterSavedFileDates.TryGetValue(fullName, out converterSaveDate))
{
converterSaveDate = DateTime.MinValue;
}
return converterSaveDate;
}
public static async Task RefreshFileInfo(Context context)
{
var fileInfo = context.Event.FileSystemInfo as FileInfo;
if (fileInfo != null && !context.FileInfoRefreshed)
{
context.FileInfoRefreshed = true;
await Extensions.FSOperation
(
() =>
{
fileInfo.Refresh(); //https://stackoverflow.com/questions/7828132/getting-current-file-length-fileinfo-length-caching-and-stale-information
if (fileInfo.Exists)
{
var dummyAttributes = fileInfo.Attributes;
var dymmyLength = fileInfo.Length;
var dymmyTime = fileInfo.LastWriteTimeUtc;
}
},
context.Token
);
}
}
public static async Task<bool> NeedsUpdate(Context context)
{
if (context.IsInitialScan)
{
return true;
}
var fileInfoForLength = context.FileInfo as FileInfo;
if (fileInfoForLength != null) //a file from directory scan
{
//await RefreshFileInfo(context);
var fileLength = fileInfoForLength.Length; //NB! this info might be stale, but lets ignore that issue here
long maxFileSize = Math.Min(FileExtensions.MaxByteArraySize, Global.MaxFileSizeMB * (1024 * 1024));
if (maxFileSize > 0 && fileLength > maxFileSize)
{
await AddMessage(ConsoleColor.Red, $"Error synchronising updates from file {context.Event.FullName} : fileLength > maxFileSize : {fileLength} > {maxFileSize}", context);
return false;
}
}
var converterSaveDate = GetBidirectionalConverterSaveDate(context.Event.FullName);
var fileTime = context.Event.FileSystemInfo.LastWriteTimeUtc; //GetFileTime(context.Event.FullName);
if (
!Global.Bidirectional //no need to debounce BIDIRECTIONAL file save events when bidirectional save is disabled
|| fileTime > converterSaveDate.AddSeconds(3) //NB! ignore if the file changed during 3 seconds after converter save //TODO!! config
)
{
var otherFullName = GetOtherFullName(context);
var otherFileInfoRef = new FileInfoRef(context.OtherFileInfo, context.Token);
var otherFileTime = await GetFileTime(otherFileInfoRef, otherFullName);
context.OtherFileInfo = otherFileInfoRef.Value;
if (fileTime > otherFileTime) //NB!
{
return true;
}
}
return false;
}
public static async Task FileUpdated(Context context)
{
if (
IsWatchedFile(context.Event.FullName)
&& (await NeedsUpdate(context)) //NB!
)
{
var otherFullName = GetOtherFullName(context);
using (await Global.FileOperationLocks.LockAsync(context.Event.FullName, otherFullName, context.Token))
{
using (await Global.FileOperationSemaphore.LockAsync())
{
var fullNameInvariant = context.Event.FullName.ToUpperInvariantOnWindows(Global.CaseSensitiveFilenames);
if (
Global.WatchedCodeExtension.Any(x => fullNameInvariant.EndsWith("." + x))
|| Global.WatchedCodeExtension.Contains("*")
)
{
if (IsAsyncPath(fullNameInvariant))
{
await AsyncToSyncConverter.AsyncFileUpdated(context);
}
else if (IsSyncPath(fullNameInvariant)) //NB!
{
await SyncToAsyncConverter.SyncFileUpdated(context);
}
else
{
throw new ArgumentException("fullName");
}
}
else //Assume ResX file
{
long maxFileSize = Math.Min(FileExtensions.MaxByteArraySize, Global.MaxFileSizeMB * (1024 * 1024));
//TODO: consider destination disk free space here together with the file size already before reading the file
Tuple<byte[], long> fileDataTuple = null;