internal LogManagementAsyncResult(LogStore logStore)
: base(null, null)
{
this.logStore = logStore;
this.notification = new CLFS_MGMT_NOTIFICATION();
this.handleLogFullCallbackList = null;
}
public LogRecordSequence(
LogStore logStore,
int bufferSize,
int bufferCount)
{
if (logStore == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentNull("logStore"));
}
if (bufferSize <= 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentOutOfRange("bufferSize"));
}
if (bufferCount <= 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentOutOfRange("bufferCount"));
}
this.store = logStore;
this.ownStore = false;
this.bufferSize = GetBufferSize(bufferSize);
this.writeBufferCount = bufferCount;
}
// The LogStore constructor will demand full trust, so we don't have to.
public LogRecordSequence(
string path,
FileMode mode,
FileAccess access,
FileShare share,
int bufferSize,
int bufferCount,
FileSecurity fileSecurity)
{
if (bufferSize <= 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentOutOfRange("bufferSize"));
}
if (bufferCount <= 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentOutOfRange("bufferCount"));
}
this.store = new LogStore(path,
mode,
access,
share,
fileSecurity);
this.ownStore = true;
this.bufferSize = GetBufferSize(bufferSize);
this.writeBufferCount = bufferCount;
}
internal LogManagementAsyncResult(LogStore logStore)
: base(null, null)
{
this.logStore = logStore;
this.notification = new CLFS_MGMT_NOTIFICATION();
this.handleLogFullCallbackList = null;
}
// The LogStore constructor will demand full trust, so we don't have to.
public LogRecordSequence(
string path,
FileMode mode)
{
this.store = new LogStore(path, mode);
this.ownStore = true;
this.bufferSize = GetBufferSize(DefaultBufferSize);
this.writeBufferCount = DefaultWriteBufferCount;
}
public LogRecordSequence(LogStore logStore)
{
if (logStore == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(Error.ArgumentNull("logStore"));
}
this.store = logStore;
this.ownStore = false;
this.bufferSize = GetBufferSize(DefaultBufferSize);
this.writeBufferCount = DefaultWriteBufferCount;
}
internal LogArchiveSnapshot(LogStore store,
ulong lsnLow,
ulong lsnHigh)
{
StringBuilder baseLogFileName = new StringBuilder(MaxFileNameLength);
int actualLength;
ulong baseLogFileOffset;
ulong baseLogFileLength;
ulong lsnBase;
ulong lsnLast;
ulong lsnArchiveTail;
SafeArchiveContext archiveContext = null;
try
{
while (!UnsafeNativeMethods.PrepareLogArchive(
store.Handle,
baseLogFileName,
baseLogFileName.Capacity,
ref lsnLow,
ref lsnHigh,
out actualLength,
out baseLogFileOffset,
out baseLogFileLength,
out lsnBase,
out lsnLast,
out lsnArchiveTail,
out archiveContext))
{
baseLogFileName.EnsureCapacity(actualLength + 1);
}
this.archiveTail = new SequenceNumber(lsnArchiveTail);
this.baseSequenceNumber = new SequenceNumber(lsnBase);
this.lastSequenceNumber = new SequenceNumber(lsnLast);
List <FileRegion> regions = new List <FileRegion>();
byte[] readBuffer = new byte[checked ((uint)baseLogFileLength)];
uint actualDataLength = 0;
unsafe
{
fixed(byte *pbReadBuffer = readBuffer)
{
UnsafeNativeMethods.ReadLogArchiveMetadata(
archiveContext,
0,
readBuffer.Length,
pbReadBuffer,
out actualDataLength);
}
}
byte[] baseFileData;
if (actualDataLength == (uint)baseLogFileLength)
{
baseFileData = readBuffer;
}
else
{
baseFileData = new byte[actualDataLength];
Array.Copy(readBuffer, baseFileData, baseFileData.Length);
}
regions.Add(new FileRegion((long)baseLogFileLength,
baseLogFileName.ToString(),
(long)baseLogFileOffset,
baseFileData));
CLFS_ARCHIVE_DESCRIPTOR descriptor = new CLFS_ARCHIVE_DESCRIPTOR();
while (true)
{
int returnedCount;
if (!UnsafeNativeMethods.GetNextLogArchiveExtentSingle(
archiveContext,
ref descriptor,
out returnedCount))
{
break;
}
if (returnedCount < 1)
{
break;
}
long start = checked ((long)descriptor.coffLow);
long length = checked ((long)(descriptor.coffHigh - descriptor.coffLow));
string fileName = descriptor.infoContainer.GetActualFileName(store.Handle);
FileInfo containerInfo;
containerInfo = new FileInfo(fileName);
regions.Add(new FileRegion(containerInfo.Length,
fileName,
start,
length));
}
this.regions = regions.AsReadOnly();
}
finally
{
if (archiveContext != null && !archiveContext.IsInvalid)
{
archiveContext.Close();
}
}
}
internal LogExtentCollection(LogStore store)
{
this.store = store;
}
internal LogArchiveSnapshot(LogStore store,
ulong lsnLow,
ulong lsnHigh)
{
StringBuilder baseLogFileName = new StringBuilder(MaxFileNameLength);
int actualLength;
ulong baseLogFileOffset;
ulong baseLogFileLength;
ulong lsnBase;
ulong lsnLast;
ulong lsnArchiveTail;
SafeArchiveContext archiveContext = null;
try
{
while (!UnsafeNativeMethods.PrepareLogArchive(
store.Handle,
baseLogFileName,
baseLogFileName.Capacity,
ref lsnLow,
ref lsnHigh,
out actualLength,
out baseLogFileOffset,
out baseLogFileLength,
out lsnBase,
out lsnLast,
out lsnArchiveTail,
out archiveContext))
{
baseLogFileName.EnsureCapacity(actualLength + 1);
}
this.archiveTail = new SequenceNumber(lsnArchiveTail);
this.baseSequenceNumber = new SequenceNumber(lsnBase);
this.lastSequenceNumber = new SequenceNumber(lsnLast);
List<FileRegion> regions = new List<FileRegion>();
byte[] readBuffer = new byte[checked((uint)baseLogFileLength)];
uint actualDataLength = 0;
unsafe
{
fixed (byte* pbReadBuffer = readBuffer)
{
UnsafeNativeMethods.ReadLogArchiveMetadata(
archiveContext,
0,
readBuffer.Length,
pbReadBuffer,
out actualDataLength);
}
}
byte[] baseFileData;
if (actualDataLength == (uint)baseLogFileLength)
{
baseFileData = readBuffer;
}
else
{
baseFileData = new byte[actualDataLength];
Array.Copy(readBuffer, baseFileData, baseFileData.Length);
}
regions.Add(new FileRegion((long)baseLogFileLength,
baseLogFileName.ToString(),
(long)baseLogFileOffset,
baseFileData));
CLFS_ARCHIVE_DESCRIPTOR descriptor = new CLFS_ARCHIVE_DESCRIPTOR();
while (true)
{
int returnedCount;
if (!UnsafeNativeMethods.GetNextLogArchiveExtentSingle(
archiveContext,
ref descriptor,
out returnedCount))
{
break;
}
if (returnedCount < 1) break;
long start = checked((long)descriptor.coffLow);
long length = checked((long)(descriptor.coffHigh - descriptor.coffLow));
string fileName = descriptor.infoContainer.GetActualFileName(store.Handle);
FileInfo containerInfo;
containerInfo = new FileInfo(fileName);
regions.Add(new FileRegion(containerInfo.Length,
fileName,
start,
length));
}
this.regions = regions.AsReadOnly();
}
finally
{
if (archiveContext != null && !archiveContext.IsInvalid)
{
archiveContext.Close();
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Logger"/> class.
/// </summary>
/// <param name="basePath">
/// The base path where the log files are resided.
/// </param>
/// <param name="baseName">
/// The base name of the log files.
/// </param>
/// <param name="extentSize">
/// Size of each log extent in bytes.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="basePath"/> is null, or <paramref name="baseName"/> is null.
/// </exception>
public Logger(string basePath, string baseName, int extentSize)
{
if (string.IsNullOrEmpty(basePath))
{
throw new ArgumentNullException("basePath");
}
if (string.IsNullOrEmpty(baseName))
{
throw new ArgumentNullException("baseName");
}
// If the base path doesn't exist, create it.
if (!Directory.Exists(basePath))
{
Directory.CreateDirectory(basePath);
}
string fullPath = Path.Combine(basePath, baseName);
try
{
_store = new LogStore(fullPath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
}
catch (PlatformNotSupportedException)
{
AutomaticDisable = true;
return;
}
_sequence = new LogRecordSequence(_store);
_sequence.RetryAppend = true;
if (_store.Extents.Count == 0)
{
_store.Extents.Add(fullPath, extentSize);
}
}
