/// <summary>
/// Saves an error log on disk.
/// </summary>
/// <param name="exception">The exception that caused the crash.</param>
/// <param name="errorLog">The error log.</param>
public virtual void InstanceSaveErrorLogFiles(System.Exception exception, ManagedErrorLog errorLog)
{
try
{
// Serialize main log file.
var errorLogString = LogSerializer.Serialize(errorLog);
var errorLogFileName = errorLog.Id + ErrorLogFileExtension;
AppCenterLog.Debug(Crashes.LogTag, "Saving uncaught exception.");
var directory = InstanceGetErrorStorageDirectory();
directory.CreateFile(errorLogFileName, errorLogString);
AppCenterLog.Debug(Crashes.LogTag, $"Saved error log in directory {ErrorStorageDirectoryName} with name {errorLogFileName}.");
try
{
// Serialize exception as raw stack trace.
var exceptionFileName = errorLog.Id + ExceptionFileExtension;
directory.CreateFile(exceptionFileName, exception.ToString());
AppCenterLog.Debug(Crashes.LogTag, $"Saved exception in directory {ErrorStorageDirectoryName} with name {exceptionFileName}.");
}
catch (System.Exception ex)
{
AppCenterLog.Warn(Crashes.LogTag, "Failed to serialize exception for client side inspection.", ex);
}
}
catch (System.Exception ex)
{
AppCenterLog.Error(Crashes.LogTag, "Failed to save error log.", ex);
}
}
public async Task ShutdownAsync()
{
ThrowIfDisposed();
var tasks = new List <Task>();
lock (_channelGroupLock)
{
if (_isShutdown)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Attempted to shutdown channel multiple times.");
return;
}
_isShutdown = true;
_ingestion.Close();
foreach (var channel in _channels)
{
tasks.Add(channel.ShutdownAsync());
}
}
await Task.WhenAll(tasks).ConfigureAwait(false);
AppCenterLog.Debug(AppCenterLog.LogTag, "Waiting for storage to finish operations.");
if (!await _storage.ShutdownAsync(WaitStorageTimeout).ConfigureAwait(false))
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Storage taking too long to finish operations; shutting down channel without waiting any longer.");
}
}
public async Task EnqueueAsync(Log log)
{
try
{
State state;
bool discardLogs;
using (await _mutex.GetLockAsync().ConfigureAwait(false))
{
state = _mutex.State;
discardLogs = _discardLogs;
}
if (discardLogs)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Channel is disabled; logs are discarded");
SendingLog?.Invoke(this, new SendingLogEventArgs(log));
FailedToSendLog?.Invoke(this, new FailedToSendLogEventArgs(log, new CancellationException()));
}
EnqueuingLog?.Invoke(this, new EnqueuingLogEventArgs(log));
await PrepareLogAsync(log, state).ConfigureAwait(false);
await PersistLogAsync(log, state).ConfigureAwait(false);
}
catch (StatefulMutexException)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "The Enqueue operation has been cancelled");
}
}
public static IEnumerable <ErrorAttachmentLog> GetErrorAttachments()
{
var attachments = new List <ErrorAttachmentLog>();
if (Current.Properties.TryGetValue(CrashesContentPage.TextAttachmentKey, out var textAttachment) &&
textAttachment is string text)
{
var attachment = ErrorAttachmentLog.AttachmentWithText(text, "hello.txt");
attachments.Add(attachment);
}
if (Current.Properties.TryGetValue(CrashesContentPage.FileAttachmentKey, out var fileAttachment) &&
fileAttachment is string file)
{
var filePicker = DependencyService.Get <IFilePicker>();
if (filePicker != null)
{
try
{
var result = filePicker.ReadFile(file);
if (result != null)
{
var attachment = ErrorAttachmentLog.AttachmentWithBinary(result.Item1, result.Item2, result.Item3);
attachments.Add(attachment);
}
}
catch (Exception e)
{
AppCenterLog.Warn(LogTag, "Couldn't read file attachment", e);
Current.Properties.Remove(CrashesContentPage.FileAttachmentKey);
}
}
}
return(attachments);
}
private async Task SignalDeletingLogs(IList <string> sendingBatches)
{
var logs = new List <Log>();
try
{
do
{
var batchId = await _storage.GetLogsAsync(Name, ClearBatchSize, logs).ConfigureAwait(false);
if (sendingBatches.Contains(batchId))
{
continue;
}
foreach (var log in logs)
{
AppCenterLog.Debug(AppCenterLog.LogTag, $"Invoke SendingLog for channel '{Name}'");
SendingLog?.Invoke(this, new SendingLogEventArgs(log));
AppCenterLog.Debug(AppCenterLog.LogTag, $"Invoke FailedToSendLog event for channel '{Name}'");
FailedToSendLog?.Invoke(this, new FailedToSendLogEventArgs(log, new CancellationException()));
}
}while (logs.Count >= ClearBatchSize);
}
catch
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Failed to invoke events for logs being deleted.");
}
}
///<exception cref="IngestionException"/>
private async Task ExecuteAsyncHelper()
{
while (true)
{
try
{
await Ingestion.ExecuteCallAsync(this).ConfigureAwait(false);
return;
}
catch (IngestionException e)
{
if (!e.IsRecoverable || _retryCount >= _retryIntervals.Length)
{
throw;
}
AppCenterLog.Warn(AppCenterLog.LogTag, "Failed to execute service call", e);
}
await _retryIntervals[_retryCount++]().ConfigureAwait(false);
if (_tokenSource.Token.IsCancellationRequested)
{
throw new IngestionException("The operation has been cancelled");
}
}
}
private void HandleSendingSuccess(State state, string batchId)
{
if (!_mutex.IsCurrent(state))
{
return;
}
try
{
_storage.DeleteLogs(Name, batchId);
}
catch (StorageException e)
{
AppCenterLog.Warn(AppCenterLog.LogTag, $"Could not delete logs for batch {batchId}", e);
throw;
}
finally
{
List <Log> removedLogs;
using (_mutex.GetLock(state))
{
removedLogs = _sendingBatches[batchId];
_sendingBatches.Remove(batchId);
}
if (SentLog != null)
{
foreach (var log in removedLogs)
{
SentLog?.Invoke(this, new SentLogEventArgs(log));
}
}
}
}
private void SaveExceptionFile(Directory directory, string fileName, Exception exception)
{
try
{
using (var fileStream = NewFileStream(Path.Combine(directory.FullName, fileName), FileMode.Create))
{
var formatter = new BinaryFormatter();
formatter.Serialize(fileStream, exception);
}
AppCenterLog.Debug(Crashes.LogTag, $"Saved exception in directory {ErrorStorageDirectoryName} with name {fileName}.");
}
catch (Exception e)
{
if (!exception.GetType().IsSerializable)
{
// Note that this still saves an empty file which acts as a marker for error report life cycle. Same as Android SDK.
AppCenterLog.Warn(Crashes.LogTag, $"Cannot serialize {exception.GetType().FullName} exception for client side inspection. " +
"If you want to have access to the exception in the callbacks, please add a Serializable attribute " +
"and a deserialization constructor to the exception class.");
}
else
{
AppCenterLog.Warn(Crashes.LogTag, "Failed to serialize exception for client side inspection.", e);
}
}
}
public override NSArray AttachmentsWithCrashes(iOSCrashes crashes, MSACErrorReport msReport)
{
if (GetErrorAttachments == null)
{
return(null);
}
var report = new ErrorReport(msReport);
var attachments = GetErrorAttachments(report);
if (attachments != null)
{
var nsArray = new NSMutableArray();
foreach (var attachment in attachments)
{
if (attachment != null)
{
nsArray.Add(attachment.internalAttachment);
}
else
{
AppCenterLog.Warn(LogTag, "Skipping null ErrorAttachmentLog in Crashes.GetErrorAttachments.");
}
}
return(nsArray);
}
return(null);
}
private void TriggerDeleteLogsOnSuspending(IList <string> sendingBatches)
{
try
{
if (SendingLog == null && FailedToSendLog == null)
{
_storage.DeleteLogs(Name);
return;
}
SignalDeletingLogs(sendingBatches).ContinueWith(completedTask =>
{
try
{
_storage.DeleteLogs(Name);
}
catch (StorageException e)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Could not delete logs with error: ", e);
}
});
}
catch (StorageException e)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Could not delete logs with error: ", e);
}
}
private Timer IntervalCall(int retry, Action action)
{
var interval = (int)_retryIntervals[retry - 1].TotalMilliseconds;
AppCenterLog.Warn(AppCenterLog.LogTag, $"Try #{retry} failed and will be retried in {interval} ms");
return(new Timer(state => action(), null, interval, Timeout.Infinite));
}
private void HandleSendingFailure(State state, string batchId, Exception exception)
{
IList <Log> removedLogs;
using (_mutex.GetLock(state))
{
removedLogs = _sendingBatches[batchId];
_sendingBatches.Remove(batchId);
}
if (FailedToSendLog != null)
{
foreach (var log in removedLogs)
{
AppCenterLog.Debug(AppCenterLog.LogTag, $"Invoke FailedToSendLog event for channel '{Name}'");
FailedToSendLog?.Invoke(this, new FailedToSendLogEventArgs(log, exception));
}
}
try
{
_storage.DeleteLogs(Name, batchId);
}
catch (StorageException e)
{
AppCenterLog.Warn(AppCenterLog.LogTag, $"Could not delete logs for batch {batchId}", e);
}
}
private async Task PersistLogAsync(Log log, State state)
{
try
{
await _storage.PutLog(Name, log).ConfigureAwait(false);
}
catch (StorageException e)
{
AppCenterLog.Error(AppCenterLog.LogTag, "Error persisting log", e);
return;
}
try
{
bool enabled;
using (await _mutex.GetLockAsync(state).ConfigureAwait(false))
{
_pendingLogCount++;
enabled = _enabled;
}
if (enabled)
{
CheckPendingLogs(state);
return;
}
AppCenterLog.Warn(AppCenterLog.LogTag, "Channel is temporarily disabled; log was saved to disk");
}
catch (StatefulMutexException)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "The PersistLog operation has been cancelled");
}
}
private async Task TriggerIngestionAsync(State state)
{
using (await _mutex.GetLockAsync(state).ConfigureAwait(false))
{
if (!_enabled || !_batchScheduled)
{
return;
}
AppCenterLog.Debug(AppCenterLog.LogTag,
$"TriggerIngestion({Name}) pending log count: {_pendingLogCount}");
_batchScheduled = false;
if (_sendingBatches.Count >= _maxParallelBatches)
{
AppCenterLog.Debug(AppCenterLog.LogTag,
$"Already sending {_maxParallelBatches} batches of analytics data to the server");
return;
}
}
// Get a batch from storage
var logs = new List <Log>();
var batchId = await _storage.GetLogsAsync(Name, _maxLogsPerBatch, logs).ConfigureAwait(false);
if (batchId != null)
{
using (await _mutex.GetLockAsync(state).ConfigureAwait(false))
{
_sendingBatches.Add(batchId, logs);
_pendingLogCount -= logs.Count;
}
try
{
// Before sending logs, trigger the sending event for this channel
if (SendingLog != null)
{
foreach (var log in logs)
{
AppCenterLog.Debug(AppCenterLog.LogTag, $"Invoke SendingLog event for channel '{Name}'");
SendingLog?.Invoke(this, new SendingLogEventArgs(log));
}
}
// If the optional Install ID has no value, default to using empty GUID
var installId = await AppCenter.GetInstallIdAsync().ConfigureAwait(false) ?? Guid.Empty;
var ingestionCall = _ingestion.Call(_appSecret, installId, logs);
using (await _mutex.GetLockAsync(state).ConfigureAwait(false))
{
_calls.Add(ingestionCall);
}
ingestionCall.ContinueWith(call => HandleSendingResult(state, batchId, call));
CheckPendingLogs(state);
}
catch (StorageException)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Something went wrong sending logs to ingestion");
}
}
}
/// <summary>
/// If enabled, register push channel and send URI to backend.
/// Also start intercepting pushes.
/// If disabled and previously enabled, stop listening for pushes (they will still be received though).
/// </summary>
private void ApplyEnabledState(bool enabled)
{
if (enabled)
{
// We expect caller of this method to lock on _mutex, we can't do it here as that lock is not recursive
AppCenterLog.Debug(LogTag, "Getting push token...");
var state = _mutex.State;
CreatePushNotificationChannel(channel =>
{
try
{
using (_mutex.GetLock(state))
{
LatestPushToken = channel?.Uri;
if (!string.IsNullOrEmpty(LatestPushToken))
{
// Save channel member
_channel = channel;
// Subscribe to UserId Change.
UserIdContext.UserIdUpdated -= OnUserIdUpdated;
UserIdContext.UserIdUpdated += OnUserIdUpdated;
// Subscribe to push.
channel.PushNotificationReceived += OnPushNotificationReceivedHandler;
// Send channel URI to backend
AppCenterLog.Debug(LogTag, $"Push token '{LatestPushToken}'");
var pushInstallationLog = new PushInstallationLog(null, LatestPushToken, null, Guid.NewGuid(), UserIdContext.Instance.UserId);
// Do not await the call to EnqueueAsync or the UI thread can be blocked!
#pragma warning disable CS4014
Channel.EnqueueAsync(pushInstallationLog);
#pragma warning restore
}
else
{
AppCenterLog.Error(LogTag, "Push service registering with App Center backend has failed.");
}
}
}
catch (StatefulMutexException)
{
AppCenterLog.Warn(LogTag, "Push Enabled state changed after creating channel.");
}
});
}
else if (_channel != null)
{
LatestPushToken = null;
UserIdContext.UserIdUpdated -= OnUserIdUpdated;
_channel.PushNotificationReceived -= OnPushNotificationReceivedHandler;
}
}
private void SaveConfiguration()
{
try
{
configuration.Save();
}
catch (ConfigurationErrorsException e)
{
AppCenterLog.Warn(AppCenterLog.LogTag, $"Configuration file can't be saved. Failure reason: {e.Message}");
}
}
internal static string DeserializeException(byte[] exceptionBytes)
{
try
{
return(Encoding.UTF8.GetString(exceptionBytes));
}
catch (Exception e)
{
AppCenterLog.Warn(Crashes.LogTag, "Failed to deserialize exception for client side inspection.", e);
}
return(null);
}
private void CheckPendingLogs(State state)
{
if (!_enabled)
{
AppCenterLog.Info(AppCenterLog.LogTag, "The service has been disabled. Stop processing logs.");
return;
}
if (!_ingestion.IsEnabled)
{
AppCenterLog.Info(AppCenterLog.LogTag, "App Center is in offline mode.");
return;
}
AppCenterLog.Debug(AppCenterLog.LogTag, $"CheckPendingLogs({Name}) pending log count: {_pendingLogCount}");
using (_mutex.GetLock())
{
if (_pendingLogCount >= _maxLogsPerBatch)
{
_batchScheduled = true;
Task.Run(async() =>
{
try
{
await TriggerIngestionAsync(state).ConfigureAwait(false);
}
catch (StatefulMutexException)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Sending logs operation has been canceled.");
}
});
}
else if (_pendingLogCount > 0 && !_batchScheduled)
{
_batchScheduled = true;
// No need wait _batchTimeInterval here.
Task.Run(async() =>
{
await Task.Delay((int)_batchTimeInterval.TotalMilliseconds).ConfigureAwait(false);
if (_batchScheduled)
{
try
{
await TriggerIngestionAsync(_mutex.State).ConfigureAwait(false);
}
catch (StatefulMutexException)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Sending logs operation has been canceled.");
}
}
});
}
}
}
/// <summary>
/// Suspend channel.
/// </summary>
/// <param name="state">Current state.</param>
/// <param name="deleteLogs">Value indicating whether logs should be enabled or disabled.</param>
/// <param name="exception">Possible error if unsuccessful.</param>
/// <param name="needDisableChannel">Value indicating whether channel should be disabled. True by default.</param>
private void Suspend(State state, bool deleteLogs, Exception exception, bool needDisableChannel = true)
{
AppCenterLog.Debug(AppCenterLog.LogTag, $"Suspend channel: '{Name}'");
try
{
IList <string> sendingBatches = null;
IList <Log> unsentLogs = null;
using (_mutex.GetLock(state))
{
if (needDisableChannel)
{
_enabled = false;
}
_batchScheduled = false;
_discardLogs = deleteLogs;
if (deleteLogs)
{
sendingBatches = _sendingBatches.Keys.ToList();
unsentLogs = _sendingBatches.Values.SelectMany(batch => batch).ToList();
_sendingBatches.Clear();
}
state = _mutex.InvalidateState();
}
if (unsentLogs != null && FailedToSendLog != null)
{
foreach (var log in unsentLogs)
{
AppCenterLog.Debug(AppCenterLog.LogTag, $"Invoke FailedToSendLog event for channel '{Name}'");
FailedToSendLog?.Invoke(this, new FailedToSendLogEventArgs(log, exception));
}
}
if (deleteLogs)
{
IList <IServiceCall> calls;
using (_mutex.GetLock(state))
{
calls = _calls.ToList();
_calls.Clear();
_pendingLogCount = 0;
TriggerDeleteLogsOnSuspending(sendingBatches);
}
foreach (var call in calls)
{
call.Cancel();
}
}
_storage.ClearPendingLogState(Name);
}
catch (StatefulMutexException)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "The suspend operation has been canceled");
}
}
private static Func <Task> GetDelayFunc(TimeSpan[] intervals, int retry)
{
return(async() =>
{
var delayMilliseconds = (int)(intervals[retry].TotalMilliseconds / 2.0);
delayMilliseconds += await GetRandomIntAsync(delayMilliseconds).ConfigureAwait(false);
var message = $"Try #{retry} failed and will be retried in {delayMilliseconds} ms";
AppCenterLog.Warn(AppCenterLog.LogTag, message);
await Task.Delay(delayMilliseconds).ConfigureAwait(false);
});
}
/// <summary>
/// Asynchronously retrieves logs from storage and flags them to avoid duplicate retrievals on subsequent calls
/// </summary>
/// <param name="channelName">Name of the channel to retrieve logs from</param>
/// <param name="limit">The maximum number of logs to retrieve</param>
/// <param name="logs">A list to which the retrieved logs will be added</param>
/// <returns>A batch ID for the set of returned logs; null if no logs are found</returns>
/// <exception cref="StorageException"/>
public Task <string> GetLogsAsync(string channelName, int limit, List <Log> logs)
{
return(AddTaskToQueue(() =>
{
logs?.Clear();
var retrievedLogs = new List <Log>();
AppCenterLog.Debug(AppCenterLog.LogTag,
$"Trying to get up to {limit} logs from storage for {channelName}");
var idPairs = new List <Tuple <Guid?, long> >();
var failedToDeserializeALog = false;
var objectEntries = _storageAdapter.Select(TableName, ColumnChannelName, channelName, ColumnIdName, _pendingDbIdentifiers.Cast <object>().ToArray(), limit);
var retrievedEntries = objectEntries.Select(entries =>
new LogEntry()
{
Id = (long)entries[0],
Channel = (string)entries[1],
Log = (string)entries[2]
}
).ToList();
foreach (var entry in retrievedEntries)
{
try
{
var log = LogSerializer.DeserializeLog(entry.Log);
retrievedLogs.Add(log);
idPairs.Add(Tuple.Create(log.Sid, Convert.ToInt64(entry.Id)));
}
catch (JsonException e)
{
AppCenterLog.Error(AppCenterLog.LogTag, "Cannot deserialize a log in storage", e);
failedToDeserializeALog = true;
_storageAdapter.Delete(TableName, ColumnIdName, entry.Id);
}
}
if (failedToDeserializeALog)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Deleted logs that could not be deserialized");
}
if (idPairs.Count == 0)
{
AppCenterLog.Debug(AppCenterLog.LogTag,
$"No available logs in storage for channel '{channelName}'");
return null;
}
// Process the results
var batchId = Guid.NewGuid().ToString();
ProcessLogIds(channelName, batchId, idPairs);
logs?.AddRange(retrievedLogs);
return batchId;
}));
}
/// <summary>
/// Asynchronously retrieves logs from storage and flags them to avoid duplicate retrievals on subsequent calls
/// </summary>
/// <param name="channelName">Name of the channel to retrieve logs from</param>
/// <param name="limit">The maximum number of logs to retrieve</param>
/// <param name="logs">A list to which the retrieved logs will be added</param>
/// <returns>A batch ID for the set of returned logs; null if no logs are found</returns>
/// <exception cref="StorageException"/>
public Task <string> GetLogsAsync(string channelName, int limit, List <Log> logs)
{
return(AddTaskToQueue(() =>
{
logs?.Clear();
var retrievedLogs = new List <Log>();
AppCenterLog.Debug(AppCenterLog.LogTag,
$"Trying to get up to {limit} logs from storage for {channelName}");
var idPairs = new List <Tuple <Guid?, long> >();
var failedToDeserializeALog = false;
var retrievedEntries =
_storageAdapter.GetAsync <LogEntry>(entry => entry.Channel == channelName, limit)
.GetAwaiter().GetResult();
foreach (var entry in retrievedEntries)
{
if (_pendingDbIdentifiers.Contains(entry.Id))
{
continue;
}
try
{
var log = LogSerializer.DeserializeLog(entry.Log);
retrievedLogs.Add(log);
idPairs.Add(Tuple.Create(log.Sid, Convert.ToInt64(entry.Id)));
}
catch (JsonException e)
{
AppCenterLog.Error(AppCenterLog.LogTag, "Cannot deserialize a log in storage", e);
failedToDeserializeALog = true;
_storageAdapter.DeleteAsync <LogEntry>(row => row.Id == entry.Id)
.GetAwaiter().GetResult();
}
}
if (failedToDeserializeALog)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Deleted logs that could not be deserialized");
}
if (idPairs.Count == 0)
{
AppCenterLog.Debug(AppCenterLog.LogTag,
$"No available logs in storage for channel '{channelName}'");
return null;
}
// Process the results
var batchId = Guid.NewGuid().ToString();
ProcessLogIds(channelName, batchId, idPairs);
logs?.AddRange(retrievedLogs);
return batchId;
}));
}
public void Pause()
{
lock (_lockObject)
{
if (_currentSessionState == SessionState.Inactive)
{
AppCenterLog.Warn(Analytics.Instance.LogTag, "Trying to pause already inactive session.");
return;
}
AppCenterLog.Debug(Analytics.Instance.LogTag, "SessionTracker.Pause");
_lastPausedTime = TimeHelper.CurrentTimeInMilliseconds();
_currentSessionState = SessionState.Inactive;
}
}
static WpfHelper()
{
try
{
var assemblies = AppDomain.CurrentDomain.GetAssemblies();
PresentationFramework =
assemblies.FirstOrDefault(assembly => assembly.GetName().Name == "PresentationFramework");
IsRunningOnWpf = PresentationFramework != null;
}
catch (AppDomainUnloadedException)
{
AppCenterLog.Warn(AppCenterLog.LogTag, "Unabled to determine whether this application is WPF or Windows Forms; proceeding as though it is Windows Forms.");
}
}
public DefaultScreenSizeProvider()
{
if (!ApiInformation.IsPropertyPresent(typeof(DisplayInformation).FullName, "ScreenHeightInRawPixels") ||
!ApiInformation.IsPropertyPresent(typeof(DisplayInformation).FullName, "ScreenWidthInRawPixels"))
{
AppCenterLog.Warn(AppCenterLog.LogTag, FailureMessage);
_displayInformationEventSemaphore.Release();
return;
}
// Only try to get screen size once resuming event is invoked, because there's no point
// in trying beforehand.
ApplicationLifecycleHelper.Instance.ApplicationResuming += SetUpDisplayInformation;
}
/// <summary>
/// Validates properties.
/// </summary>
/// <param name="properties">Properties collection to validate.</param>
/// <param name="logName">Log name.</param>
/// <param name="logType">Log type.</param>
/// <returns>Valid properties collection with maximum size of 5</returns>
private IDictionary <string, string> ValidateProperties(IDictionary <string, string> properties, string logName, string logType)
{
if (properties == null)
{
return(null);
}
var result = new Dictionary <string, string>();
foreach (var property in properties)
{
if (result.Count >= MaxEventProperties)
{
AppCenterLog.Warn(LogTag,
$"{logType} '{logName}' : properties cannot contain more than {MaxEventProperties} items. Skipping other properties.");
break;
}
// Skip empty property.
var key = property.Key;
var value = property.Value;
if (string.IsNullOrEmpty(key))
{
AppCenterLog.Warn(LogTag,
$"{logType} '{logName}' : a property key cannot be null or empty. Property will be skipped.");
break;
}
if (value == null)
{
AppCenterLog.Warn(LogTag,
$"{logType} '{logName}' : property '{key}' : property value cannot be null. Property will be skipped.");
break;
}
// Truncate exceeded property.
if (key.Length > MaxEventPropertyKeyLength)
{
AppCenterLog.Warn(LogTag,
$"{logType} '{logName}' : property '{key}' : property key length cannot be longer than {MaxEventPropertyKeyLength} characters. Property key will be truncated.");
key = key.Substring(0, MaxEventPropertyKeyLength);
}
if (value.Length > MaxEventPropertyValueLength)
{
AppCenterLog.Warn(LogTag,
$"{logType} '{logName}' : property '{key}' : property value length cannot be longer than {MaxEventPropertyValueLength} characters. Property value will be truncated.");
value = value.Substring(0, MaxEventPropertyValueLength);
}
result.Add(key, value);
}
return(result);
}
public bool SetMaxStorageSize(long sizeInBytes)
{
var db = _db ?? throw new StorageException("The database wasn't initialized.");
// Check the current number of pages in the database to determine whether the requested size will shrink the database.
var currentPageCount = GetPageCount();
var pageSize = GetPageSize();
AppCenterLog.Info(AppCenterLog.LogTag, $"Found {currentPageCount} pages in the database.");
var requestedMaxPageCount = Convert.ToBoolean(sizeInBytes % pageSize) ? sizeInBytes / pageSize + 1 : sizeInBytes / pageSize;
if (currentPageCount > requestedMaxPageCount)
{
AppCenterLog.Warn(AppCenterLog.LogTag, $"Cannot change database size to {sizeInBytes} bytes as it would cause a loss of data. " +
"Maximum database size will not be changed.");
return(false);
}
else
{
// Attempt to set the limit and check the page count to make sure the given limit works.
var result = raw.sqlite3_exec(db, $"PRAGMA max_page_count = {requestedMaxPageCount};");
if (result != raw.SQLITE_OK)
{
AppCenterLog.Error(AppCenterLog.LogTag, $"Could not change maximum database size to {sizeInBytes} bytes. SQLite error code: {result}.");
return(false);
}
else
{
var currentMaxPageCount = GetMaxPageCount();
var actualMaxSize = currentMaxPageCount * pageSize;
if (requestedMaxPageCount != currentMaxPageCount)
{
AppCenterLog.Error(AppCenterLog.LogTag, $"Could not change maximum database size to {sizeInBytes} bytes, current maximum size is {actualMaxSize} bytes.");
return(false);
}
else
{
if (sizeInBytes == actualMaxSize)
{
AppCenterLog.Info(AppCenterLog.LogTag, $"Changed maximum database size to {actualMaxSize} bytes.");
}
else
{
AppCenterLog.Info(AppCenterLog.LogTag, $"Changed maximum database size to {actualMaxSize} bytes (next multiple of 4KiB).");
}
return(true);
}
}
}
}
public void Remove(string key)
{
lock (configLock)
{
if (configuration != null)
{
configuration.AppSettings.Settings.Remove(key);
SaveConfiguration();
}
else
{
AppCenterLog.Warn(AppCenterLog.LogTag, $"{CorruptedConfigurationWarning} Method 'Remove', key:{key}");
}
}
}
public bool ContainsKey(string key)
{
lock (configLock)
{
if (configuration != null)
{
return(configuration.AppSettings.Settings[key] != null);
}
else
{
AppCenterLog.Warn(AppCenterLog.LogTag, $"{CorruptedConfigurationWarning} Method 'ContainsKey', key:{key}");
}
}
return(false);
}
public void Resume()
{
lock (_lockObject)
{
if (_currentSessionState == SessionState.Active)
{
AppCenterLog.Warn(Analytics.Instance.LogTag, "Trying to resume already active session.");
return;
}
AppCenterLog.Debug(Analytics.Instance.LogTag, "SessionTracker.Resume");
_lastResumedTime = TimeHelper.CurrentTimeInMilliseconds();
_currentSessionState = SessionState.Active;
SendStartSessionIfNeeded();
}
}