LogRecordSequence Třída
Definice
Důležité
Některé informace platí pro předběžně vydaný produkt, který se může zásadně změnit, než ho výrobce nebo autor vydá. Microsoft neposkytuje žádné záruky, výslovné ani předpokládané, týkající se zde uváděných informací.
Představuje posloupnost záznamů uloženou v objektu LogStore.
public ref class LogRecordSequence sealed : IDisposable, System::IO::Log::IRecordSequence
public sealed class LogRecordSequence : IDisposable, System.IO.Log.IRecordSequence
type LogRecordSequence = class
interface IRecordSequence
interface IDisposable
Public NotInheritable Class LogRecordSequence
Implements IDisposable, IRecordSequence
- Dědičnost
-
LogRecordSequence
- Implementuje
Příklady
Tento příklad ukazuje, jak používat LogRecordSequence třídu:
using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.IO.Log;
namespace MyLogRecordSequence
{
public class MyLog
{
string logName = "test.log";
string logContainer = "MyExtent0";
int containerSize = 32 * 1024;
LogRecordSequence sequence = null;
bool delete = true;
// These are used in the TailPinned event handler.
public static LogRecordSequence MySequence = null;
public static bool AdvanceBase = true;
public MyLog()
{
// Create a LogRecordSequence.
sequence = new LogRecordSequence(this.logName,
FileMode.CreateNew,
FileAccess.ReadWrite,
FileShare.None);
// At least one container/extent must be added for Log Record Sequence.
sequence.LogStore.Extents.Add(this.logContainer, this.containerSize);
MySequence = sequence;
}
public void AddExtents()
{
// Add two additional extents. The extents are
// of the same size as the first extent.
sequence.LogStore.Extents.Add("MyExtent1");
sequence.LogStore.Extents.Add("MyExtent2");
}
public void EnumerateExtents()
{
LogStore store = sequence.LogStore;
Console.WriteLine("Enumerating Log Extents...");
Console.WriteLine(" Extent Count: {0} extents", store.Extents.Count);
Console.WriteLine(" Extents Are...");
foreach (LogExtent extent in store.Extents)
{
Console.WriteLine(" {0} ({1}, {2})",
Path.GetFileName(extent.Path),
extent.Size,
extent.State);
}
Console.WriteLine(" Free Extents: {0} Free", store.Extents.FreeCount);
}
public void SetLogPolicy()
{
Console.WriteLine();
Console.WriteLine("Setting current log policy...");
// SET LOG POLICY
LogPolicy policy = sequence.LogStore.Policy;
// Set AutoGrow policy. This enables the log to automatically grow
// when the existing extents are full. New extents are added until
// we reach the MaximumExtentCount extents.
// AutoGrow policy is supported only in Windows Vista and not available in R2.
//policy.AutoGrow = true;
// Set the Growth Rate in terms of extents. This policy specifies
// "how much" the log should grow.
policy.GrowthRate = new PolicyUnit(2, PolicyUnitType.Extents);
// Set the AutoShrink policy. This enables the log to automatically
// shrink if the available free space exceeds the shrink percentage.
// AutoGrow/shrink policy is supported only in Windows Vista and not available in R2.
//policy.AutoShrinkPercentage = new PolicyUnit(30, PolicyUnitType.Percentage);
// Set the PinnedTailThreshold policy.
// A tail pinned event is triggered when there is no
// log space available and log space may be freed by advancing the base.
// The user must handle the tail pinned event by advancing the base of the log.
// If the user is not able to move the base of the log, the user should report with exception in
// the tail pinned handler.
// PinnedTailThreashold policy dictates the amount of space that the TailPinned event requests
// for advancing the base of the log. The amount of space can be in percentage or in terms of bytes
// which is rounded off to the nearest containers in CLFS. The default is 35 percent.
policy.PinnedTailThreshold = new PolicyUnit(10, PolicyUnitType.Percentage);
// Set the maximum extents the log can have.
policy.MaximumExtentCount = 6;
// Set the minimum extents the log can have.
policy.MinimumExtentCount = 2;
// Set the prefix for new containers that are added.
// when AutoGrow is enabled.
//policy.NewExtentPrefix = "MyLogPrefix";
// Set the suffix number for new containers that are added.
// when AutoGrow is enabled.
policy.NextExtentSuffix = 3;
// Commit the log policy.
policy.Commit();
// Refresh updates the IO.Log policy properties with current log policy
// set in the log.
policy.Refresh();
// LOG POLICY END
//
//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Setting up IO.Log provided capabilities...
//
// SET RETRY APPEND
// IO.Log provides a mechanism similar to AutoGrow.
// If the existing log is full and an append fails, setting RetryAppend
// invokes the CLFS policy engine to add new extents and re-tries
// record appends. If MaximumExtent count has been reached,
// a SequenceFullException is thrown.
//
sequence.RetryAppend = true;
// RETRY APPEND END
// REGISTER FOR TAILPINNED EVENT NOTIFICATIONS
// Register for TailPinned Event by passing in an event handler.
// An event is raised when the log full condition is reached.
// The user should either advance the base sequence number to the
// nearest valid sequence number recommended in the tail pinned event or
// report a failure that it is not able to advance the base sequence
// number.
//
sequence.TailPinned += new EventHandler<TailPinnedEventArgs>(HandleTailPinned);
Console.WriteLine("Done...");
}
public void ShowLogPolicy()
{
Console.WriteLine();
Console.WriteLine("Showing current log policy...");
LogPolicy policy = sequence.LogStore.Policy;
Console.WriteLine(" Minimum extent count: {0}", policy.MinimumExtentCount);
Console.WriteLine(" Maximum extent count: {0}", policy.MaximumExtentCount);
Console.WriteLine(" Growth rate: {0}", policy.GrowthRate);
Console.WriteLine(" Pinned tail threshold: {0}", policy.PinnedTailThreshold);
Console.WriteLine(" Auto shrink percent: {0}", policy.AutoShrinkPercentage);
Console.WriteLine(" Auto grow enabled: {0}", policy.AutoGrow);
Console.WriteLine(" New extent prefix: {0}", policy.NewExtentPrefix);
Console.WriteLine(" Next extent suffix: {0}", policy.NextExtentSuffix);
}
// Append records. Appending three records.
public void AppendRecords()
{
Console.WriteLine("Appending Log Records...");
SequenceNumber previous = SequenceNumber.Invalid;
previous = sequence.Append(CreateData("Hello World!"), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush);
previous = sequence.Append(CreateData("This is my first Logging App"), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush);
previous = sequence.Append(CreateData("Using LogRecordSequence..."), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush);
Console.WriteLine("Done...");
}
// Read the records added to the log.
public void ReadRecords()
{
Encoding enc = Encoding.Unicode;
Console.WriteLine();
Console.WriteLine("Reading Log Records...");
try
{
foreach (LogRecord record in this.sequence.ReadLogRecords(this.sequence.BaseSequenceNumber, LogRecordEnumeratorType.Next))
{
byte[] data = new byte[record.Data.Length];
record.Data.Read(data, 0, (int)record.Data.Length);
string mystr = enc.GetString(data);
Console.WriteLine(" {0}", mystr);
}
}
catch (Exception e)
{
Console.WriteLine("Exception {0} {1}", e.GetType(), e.Message);
}
Console.WriteLine();
}
public void FillLog()
{
bool append = true;
while (append)
{
try
{
sequence.Append(CreateData(16 * 1024), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush);
}
catch (SequenceFullException)
{
Console.WriteLine("Log is Full...");
append = false;
}
}
}
// Dispose the record sequence and delete the log file.
public void Cleanup()
{
// Dispose the sequence
sequence.Dispose();
// Delete the log file.
if (delete)
{
try
{
// This deletes the base log file and all the extents associated with the log.
LogStore.Delete(this.logName);
}
catch (Exception e)
{
Console.WriteLine("Exception {0} {1}", e.GetType(), e.Message);
}
}
}
// Converts the given data to an Array of ArraySegment<byte>
public static IList<ArraySegment<byte>> CreateData(string str)
{
Encoding enc = Encoding.Unicode;
byte[] array = enc.GetBytes(str);
ArraySegment<byte>[] segments = new ArraySegment<byte>[1];
segments[0] = new ArraySegment<byte>(array);
return Array.AsReadOnly<ArraySegment<byte>>(segments);
}
public static IList<ArraySegment<byte>> CreateData(int size)
{
byte[] array = new byte[size];
Random rnd = new Random();
rnd.NextBytes(array);
ArraySegment<byte>[] segments = new ArraySegment<byte>[1];
segments[0] = new ArraySegment<byte>(array);
return Array.AsReadOnly<ArraySegment<byte>>(segments);
}
public static SequenceNumber GetAdvanceBaseSeqNumber(SequenceNumber recTargetSeqNum)
{
SequenceNumber targetSequenceNumber = SequenceNumber.Invalid;
Console.WriteLine("Getting actual target sequence number...");
//
// Implement the logic for returning a valid sequence number closer to
// recommended target sequence number.
//
return targetSequenceNumber;
}
public static void HandleTailPinned(object arg, TailPinnedEventArgs tailPinnedEventArgs)
{
Console.WriteLine("TailPinned has fired");
// Based on the implementation of a logging application, the log base can be moved
// to free up more log space and if it is not possible to move the
// base, the application should report by throwing an exception.
if(MyLog.AdvanceBase)
{
try
{
// TailPnnedEventArgs has the recommended sequence number and its generated
// based on PinnedTailThreshold policy.
// This does not map to an actual sequence number in the record sequence
// but an approximation and potentially frees up the threshold % log space
// when the log base is advanced to a valid sequence number closer to the
// recommended sequence number.
// The user should use this sequence number to locate a closest valid sequence
// number to advance the base of the log.
SequenceNumber recommendedTargetSeqNum = tailPinnedEventArgs.TargetSequenceNumber;
// Get the actual Target sequence number.
SequenceNumber actualTargetSeqNum = MyLog.GetAdvanceBaseSeqNumber(recommendedTargetSeqNum);
MySequence.AdvanceBaseSequenceNumber(actualTargetSeqNum);
}
catch (Exception e)
{
Console.WriteLine("Exception thrown {0} {1}", e.GetType(), e.Message);
}
}
else
{
// Report back Error if under some conditions the log cannot
// advance the base sequence number.
Console.WriteLine("Reporting Error! Unable to move the base sequence number!");
throw new IOException();
}
}
}
class LogSample
{
static void Main(string[] args)
{
// Create log record sequence.
MyLog log = new MyLog();
// Add additional extents.
log.AddExtents();
// Enumerate the current log extents.
log.EnumerateExtents();
// Set log policies and register for TailPinned event notifications.
log.SetLogPolicy();
log.ShowLogPolicy();
// Append a few records and read the appended records.
log.AppendRecords();
log.ReadRecords();
// Fill the Log to trigger log growth...and subsequent TailPinned notifications.
log.FillLog();
log.EnumerateExtents();
log.Cleanup();
}
}
}
Imports System.IO
Imports System.Collections.Generic
Imports System.Text
Imports System.IO.Log
Namespace MyLogRecordSequence
Public Class MyLog
Private logName As String = "test.log"
Private logContainer As String = "MyExtent0"
Private containerSize As Integer = 32 * 1024
Private sequence As LogRecordSequence = Nothing
Private delete As Boolean = True
' These are used in the TailPinned event handler.
Public Shared MySequence As LogRecordSequence = Nothing
Public Shared AdvanceBase As Boolean = True
Public Sub New()
' Create a LogRecordSequence.
sequence = New LogRecordSequence(Me.logName, FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None)
' At least one container/extent must be added for Log Record Sequence.
sequence.LogStore.Extents.Add(Me.logContainer, Me.containerSize)
MySequence = sequence
End Sub
Public Sub AddExtents()
' Add two additional extents. The extents are
' of the same size as the first extent.
sequence.LogStore.Extents.Add("MyExtent1")
sequence.LogStore.Extents.Add("MyExtent2")
End Sub
Public Sub EnumerateExtents()
Dim store As LogStore = sequence.LogStore
Console.WriteLine("Enumerating Log Extents...")
Console.WriteLine(" Extent Count: {0} extents", store.Extents.Count)
Console.WriteLine(" Extents Are...")
For Each extent In store.Extents
Console.WriteLine(" {0} ({1}, {2})", Path.GetFileName(extent.Path), extent.Size, extent.State)
Next extent
Console.WriteLine(" Free Extents: {0} Free", store.Extents.FreeCount)
End Sub
Public Sub SetLogPolicy()
Console.WriteLine()
Console.WriteLine("Setting current log policy...")
' SET LOG POLICY
Dim policy As LogPolicy = sequence.LogStore.Policy
' Set AutoGrow policy. This enables the log to automatically grow
' when the existing extents are full. New extents are added until
' we reach the MaximumExtentCount extents.
' AutoGrow policy is supported only in Windows Vista and not available in R2.
'policy.AutoGrow = true;
' Set the Growth Rate in terms of extents. This policy specifies
' "how much" the log should grow.
policy.GrowthRate = New PolicyUnit(2, PolicyUnitType.Extents)
' Set the AutoShrink policy. This enables the log to automatically
' shrink if the available free space exceeds the shrink percentage.
' AutoGrow/shrink policy is supported only in Windows Vista and not available in R2.
'policy.AutoShrinkPercentage = new PolicyUnit(30, PolicyUnitType.Percentage);
' Set the PinnedTailThreshold policy.
' A tail pinned event is triggered when there is no
' log space available and log space may be freed by advancing the base.
' The user must handle the tail pinned event by advancing the base of the log.
' If the user is not able to move the base of the log, the user should report with exception in
' the tail pinned handler.
' PinnedTailThreashold policy dictates the amount of space that the TailPinned event requests
' for advancing the base of the log. The amount of space can be in percentage or in terms of bytes
' which is rounded off to the nearest containers in CLFS. The default is 35 percent.
policy.PinnedTailThreshold = New PolicyUnit(10, PolicyUnitType.Percentage)
' Set the maximum extents the log can have.
policy.MaximumExtentCount = 6
' Set the minimum extents the log can have.
policy.MinimumExtentCount = 2
' Set the prefix for new containers that are added.
' when AutoGrow is enabled.
'policy.NewExtentPrefix = "MyLogPrefix";
' Set the suffix number for new containers that are added.
' when AutoGrow is enabled.
policy.NextExtentSuffix = 3
' Commit the log policy.
policy.Commit()
' Refresh updates the IO.Log policy properties with current log policy
' set in the log.
policy.Refresh()
' LOG POLICY END
'
'+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
' Setting up IO.Log provided capabilities...
'
' SET RETRY APPEND
' IO.Log provides a mechanism similar to AutoGrow.
' If the existing log is full and an append fails, setting RetryAppend
' invokes the CLFS policy engine to add new extents and re-tries
' record appends. If MaximumExtent count has been reached,
' a SequenceFullException is thrown.
'
sequence.RetryAppend = True
' RETRY APPEND END
' REGISTER FOR TAILPINNED EVENT NOTIFICATIONS
' Register for TailPinned Event by passing in an event handler.
' An event is raised when the log full condition is reached.
' The user should either advance the base sequence number to the
' nearest valid sequence number recommended in the tail pinned event or
' report a failure that it is not able to advance the base sequence
' number.
'
AddHandler sequence.TailPinned, AddressOf HandleTailPinned
Console.WriteLine("Done...")
End Sub
Public Sub ShowLogPolicy()
Console.WriteLine()
Console.WriteLine("Showing current log policy...")
Dim policy As LogPolicy = sequence.LogStore.Policy
Console.WriteLine(" Minimum extent count: {0}", policy.MinimumExtentCount)
Console.WriteLine(" Maximum extent count: {0}", policy.MaximumExtentCount)
Console.WriteLine(" Growth rate: {0}", policy.GrowthRate)
Console.WriteLine(" Pinned tail threshold: {0}", policy.PinnedTailThreshold)
Console.WriteLine(" Auto shrink percent: {0}", policy.AutoShrinkPercentage)
Console.WriteLine(" Auto grow enabled: {0}", policy.AutoGrow)
Console.WriteLine(" New extent prefix: {0}", policy.NewExtentPrefix)
Console.WriteLine(" Next extent suffix: {0}", policy.NextExtentSuffix)
End Sub
' Append records. Appending three records.
Public Sub AppendRecords()
Console.WriteLine("Appending Log Records...")
Dim previous As SequenceNumber = SequenceNumber.Invalid
previous = sequence.Append(CreateData("Hello World!"), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush)
previous = sequence.Append(CreateData("This is my first Logging App"), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush)
previous = sequence.Append(CreateData("Using LogRecordSequence..."), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush)
Console.WriteLine("Done...")
End Sub
' Read the records added to the log.
Public Sub ReadRecords()
Dim enc As Encoding = Encoding.Unicode
Console.WriteLine()
Console.WriteLine("Reading Log Records...")
Try
For Each record As LogRecord In Me.sequence.ReadLogRecords(Me.sequence.BaseSequenceNumber, LogRecordEnumeratorType.Next)
Dim data(record.Data.Length - 1) As Byte
record.Data.Read(data, 0, CInt(Fix(record.Data.Length)))
Dim mystr As String = enc.GetString(data)
Console.WriteLine(" {0}", mystr)
Next record
Catch e As Exception
Console.WriteLine("Exception {0} {1}", e.GetType(), e.Message)
End Try
Console.WriteLine()
End Sub
Public Sub FillLog()
Dim append As Boolean = True
Do While append
Try
sequence.Append(CreateData(16 * 1024), SequenceNumber.Invalid, SequenceNumber.Invalid, RecordAppendOptions.ForceFlush)
Catch e1 As SequenceFullException
Console.WriteLine("Log is Full...")
append = False
End Try
Loop
End Sub
' Dispose the record sequence and delete the log file.
Public Sub Cleanup()
' Dispose the sequence
sequence.Dispose()
' Delete the log file.
If delete Then
Try
' This deletes the base log file and all the extents associated with the log.
LogStore.Delete(Me.logName)
Catch e As Exception
Console.WriteLine("Exception {0} {1}", e.GetType(), e.Message)
End Try
End If
End Sub
' Converts the given data to an Array of ArraySegment<byte>
Public Shared Function CreateData(ByVal str As String) As IList(Of ArraySegment(Of Byte))
Dim enc As Encoding = Encoding.Unicode
Dim array() As Byte = enc.GetBytes(str)
Dim segments(0) As ArraySegment(Of Byte)
segments(0) = New ArraySegment(Of Byte)(array)
Return System.Array.AsReadOnly(Of ArraySegment(Of Byte))(segments)
End Function
Public Shared Function CreateData(ByVal size As Integer) As IList(Of ArraySegment(Of Byte))
Dim array(size - 1) As Byte
Dim rand As New Random()
rand.NextBytes(array)
Dim segments(0) As ArraySegment(Of Byte)
segments(0) = New ArraySegment(Of Byte)(array)
Return System.Array.AsReadOnly(Of ArraySegment(Of Byte))(segments)
End Function
Public Shared Function GetAdvanceBaseSeqNumber(ByVal recTargetSeqNum As SequenceNumber) As SequenceNumber
Dim targetSequenceNumber As SequenceNumber = SequenceNumber.Invalid
Console.WriteLine("Getting actual target sequence number...")
'
' Implement the logic for returning a valid sequence number closer to
' recommended target sequence number.
'
Return targetSequenceNumber
End Function
Public Shared Sub HandleTailPinned(ByVal arg As Object, ByVal tailPinnedEventArgs As TailPinnedEventArgs)
Console.WriteLine("TailPinned has fired")
' Based on the implementation of a logging application, the log base can be moved
' to free up more log space and if it is not possible to move the
' base, the application should report by throwing an exception.
If MyLog.AdvanceBase Then
Try
' TailPnnedEventArgs has the recommended sequence number and its generated
' based on PinnedTailThreshold policy.
' This does not map to an actual sequence number in the record sequence
' but an approximation and potentially frees up the threshold % log space
' when the log base is advanced to a valid sequence number closer to the
' recommended sequence number.
' The user should use this sequence number to locate a closest valid sequence
' number to advance the base of the log.
Dim recommendedTargetSeqNum As SequenceNumber = tailPinnedEventArgs.TargetSequenceNumber
' Get the actual Target sequence number.
Dim actualTargetSeqNum As SequenceNumber = MyLog.GetAdvanceBaseSeqNumber(recommendedTargetSeqNum)
MySequence.AdvanceBaseSequenceNumber(actualTargetSeqNum)
Catch e As Exception
Console.WriteLine("Exception thrown {0} {1}", e.GetType(), e.Message)
End Try
Else
' Report back Error if under some conditions the log cannot
' advance the base sequence number.
Console.WriteLine("Reporting Error! Unable to move the base sequence number!")
Throw New IOException()
End If
End Sub
End Class
Friend Class LogSample
Shared Sub Main(ByVal args() As String)
' Create log record sequence.
Dim log As New MyLog()
' Add additional extents.
log.AddExtents()
' Enumerate the current log extents.
log.EnumerateExtents()
' Set log policies and register for TailPinned event notifications.
log.SetLogPolicy()
log.ShowLogPolicy()
' Append a few records and read the appended records.
log.AppendRecords()
log.ReadRecords()
' Fill the Log to trigger log growth...and subsequent TailPinned notifications.
log.FillLog()
log.EnumerateExtents()
log.Cleanup()
End Sub
End Class
End Namespace
Poznámky
Třída LogRecordSequence poskytuje implementaci rozhraní sekvence záznamů nad protokolem CLFS (Common Log File System). Kromě standardních funkcí orientovaných na záznamy poskytuje model zásad pro zabránění úplným podmínkám protokolu a multiplexování klientů ve stejném fyzickém souboru. Funguje s LogStore třídou, která poskytuje rozhraní pro přímou manipulaci a správu souboru protokolu CLFS. Vztah mezi třídou a LogRecordSequence třídou je podobný relaci mezi LogStore diskovým souborem a objektemFileStream. Soubor disku poskytuje konkrétní úložiště a obsahuje atributy, jako je délka a čas posledního přístupu; FileStream zatímco objekt poskytuje zobrazení souboru, který lze použít ke čtení z něj a zápisu do něj. Podobně LogStore má třída atributy jako zásady a kolekce rozsahů disků; a LogRecordSequence třída poskytuje mechanismus orientovaný na záznam pro čtení a zápis dat.
Konstruktory
LogRecordSequence(LogStore) |
Inicializuje novou instanci LogRecordSequence třídy se zadaným úložištěm protokolů. |
LogRecordSequence(LogStore, Int32, Int32) |
Inicializuje novou instanci LogRecordSequence třídy se zadaným úložištěm protokolů, velikost vyrovnávací paměti pro každý záznam a číslo vyrovnávací paměti. |
LogRecordSequence(String, FileMode) |
Inicializuje novou instanci LogRecordSequence třídy se zadanou cestou k úložišti protokolů a režimu přístupu. |
LogRecordSequence(String, FileMode, FileAccess) |
Inicializuje novou instanci LogRecordSequence třídy se zadanou cestou k úložišti protokolů a režimy přístupu a sdílení. |
LogRecordSequence(String, FileMode, FileAccess, FileShare) |
Inicializuje novou instanci LogRecordSequence třídy se zadanou cestou k úložišti protokolů a režimu přístupu. |
LogRecordSequence(String, FileMode, FileAccess, FileShare, Int32, Int32) |
Inicializuje novou instanci LogRecordSequence třídy se zadanou cestou k úložišti protokolů, oprávnění k souboru, režimu přístupu a sdílení a velikost vyrovnávací paměti a počet záznamů. |
LogRecordSequence(String, FileMode, FileAccess, FileShare, Int32, Int32, FileSecurity) |
Inicializuje novou instanci LogRecordSequence třídy. |
Vlastnosti
BaseSequenceNumber |
Získá pořadové číslo prvního platného záznamu v aktuálním LogRecordSequence. |
LastSequenceNumber |
Získá pořadové číslo, které je větší než poslední připojený záznam. |
LogStore |
LogStore Získá ten, který obsahuje data pro tuto posloupnost záznamů. Tuto metodu nelze zdědit. |
MaximumRecordLength |
Získá maximální velikost záznamu, který lze přidat do této sekvence záznamů. |
ReservedBytes |
Získá celkový počet bajtů, které byly rezervovány. |
RestartSequenceNumber |
Získá pořadové číslo oblasti restartování nejblíže ke konci protokolu. |
RetryAppend |
Získá nebo nastaví hodnotu určující, zda jsou připojení automaticky opakovat, pokud je protokol plný. |
Metody
AdvanceBaseSequenceNumber(SequenceNumber) |
Přesune základní pořadové číslo protokolu dopředu. Tuto metodu nelze dědit. |
Append(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions) |
Zapíše záznam protokolu do LogRecordSequencesouboru . Tuto metodu nelze dědit. |
Append(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection) |
Připojí záznam protokolu k záznamu IRecordSequence, pomocí místa, které bylo dříve rezervováno v posloupnosti. Tuto metodu nelze zdědit. |
Append(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions) |
Připojí záznam protokolu k objektu IRecordSequence. Tuto metodu nelze zdědit. |
Append(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection) |
Připojí záznam protokolu k záznamu IRecordSequence, pomocí místa, které bylo dříve rezervováno v posloupnosti. Tuto metodu nelze zdědit. |
BeginAppend(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions, AsyncCallback, Object) |
Zahájí asynchronní operaci připojení. Tuto metodu nelze zdědit. |
BeginAppend(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, AsyncCallback, Object) |
Zahájí asynchronní operaci připojení. Tuto metodu nelze dědit. |
BeginAppend(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions, AsyncCallback, Object) |
Zahájí asynchronní operaci připojení. Tuto metodu nelze dědit. |
BeginAppend(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, AsyncCallback, Object) |
Zahájí asynchronní operaci připojení. Tuto metodu nelze dědit. |
BeginFlush(SequenceNumber, AsyncCallback, Object) |
Zahájí asynchronní operaci vyprázdnění pomocí místa, které bylo dříve rezervováno v posloupnosti. Tuto metodu nelze zdědit. |
BeginReserveAndAppend(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[], AsyncCallback, Object) |
Zahájí asynchronní rezervu a operaci připojení. Tuto metodu nelze zdědit. |
BeginReserveAndAppend(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[], AsyncCallback, Object) |
Zahájí asynchronní rezervu a operaci připojení. Tuto metodu nelze zdědit. |
BeginWriteRestartArea(ArraySegment<Byte>, SequenceNumber, ReservationCollection, AsyncCallback, Object) |
Zahájí asynchronní operaci zápisu oblasti restartování pomocí místa, které bylo dříve rezervováno v sekvenci. Tuto metodu nelze zdědit. |
BeginWriteRestartArea(IList<ArraySegment<Byte>>, SequenceNumber, ReservationCollection, AsyncCallback, Object) |
Zahájí asynchronní operaci zápisu oblasti restartování pomocí místa, které bylo dříve rezervováno v sekvenci. Tuto metodu nelze zdědit. |
CreateReservationCollection() |
Vytvoří nový objekt ReservationCollection. Tuto metodu nelze zdědit. |
Dispose() |
Uvolní prostředky používané komponentou. |
EndAppend(IAsyncResult) |
Ukončí asynchronní operaci připojení. Tuto metodu nelze zdědit. |
EndFlush(IAsyncResult) |
Ukončí asynchronní operaci vyprázdnění. Tuto metodu nelze zdědit. |
EndReserveAndAppend(IAsyncResult) |
Ukončí asynchronní rezervu a operaci připojení. Tuto metodu nelze zdědit. |
EndWriteRestartArea(IAsyncResult) |
Ukončí asynchronní operaci zápisu oblasti restartování. Tuto metodu nelze zdědit. |
Equals(Object) |
Určí, zda se zadaný objekt rovná aktuálnímu objektu. (Zděděno od Object) |
Flush() |
Zajistí, aby byly zapsány všechny připojené záznamy. Tuto metodu nelze zdědit. |
Flush(SequenceNumber) |
Zajišťuje, že všechny připojené záznamy až do záznamu a včetně záznamu se zadaným pořadovým číslem byly trvale zapsány. Tuto metodu nelze zdědit. |
GetHashCode() |
Slouží jako výchozí funkce hash. (Zděděno od Object) |
GetType() |
Type Získá aktuální instanci. (Zděděno od Object) |
MemberwiseClone() |
Vytvoří použádnou kopii aktuálního souboru Object. (Zděděno od Object) |
ReadLogRecords(SequenceNumber, LogRecordEnumeratorType) |
Vrátí výčtovou kolekci záznamů v sekvenci. Tuto metodu nelze zdědit. |
ReadRestartAreas() |
Vrátí výčtovou kolekci oblastí restartování v posloupnosti. Tuto metodu nelze dědit. |
ReserveAndAppend(ArraySegment<Byte>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[]) |
Automaticky vytvoří jednu rezervaci a připojí záznam k sekvenci. Tuto metodu nelze dědit. |
ReserveAndAppend(IList<ArraySegment<Byte>>, SequenceNumber, SequenceNumber, RecordAppendOptions, ReservationCollection, Int64[]) |
Automaticky vytvoří jednu rezervaci a připojí záznam k sekvenci. Tuto metodu nelze dědit. |
SetLastRecord(SequenceNumber) |
Nastaví poslední záznam v souboru LogRecordSequence. |
ToString() |
Vrátí řetězec, který představuje aktuální objekt. (Zděděno od Object) |
WriteRestartArea(ArraySegment<Byte>) |
Zapíše do oblasti LogRecordSequencerestartování . Tuto metodu nelze dědit. |
WriteRestartArea(ArraySegment<Byte>, SequenceNumber) |
Zapíše do oblasti LogRecordSequence restartování a aktualizuje základní pořadové číslo. Tuto metodu nelze dědit. |
WriteRestartArea(ArraySegment<Byte>, SequenceNumber, ReservationCollection) |
Zapíše oblast restartování do LogRecordSequence rezervace a aktualizuje základní pořadové číslo. Tuto metodu nelze dědit. |
WriteRestartArea(IList<ArraySegment<Byte>>) |
Zapíše do oblasti LogRecordSequencerestartování . Tuto metodu nelze dědit. |
WriteRestartArea(IList<ArraySegment<Byte>>, SequenceNumber) |
Zapíše do oblasti LogRecordSequence restartování a aktualizuje základní pořadové číslo. Tuto metodu nelze dědit. |
WriteRestartArea(IList<ArraySegment<Byte>>, SequenceNumber, ReservationCollection) |
Zapíše oblast restartování do LogRecordSequence rezervace a aktualizuje základní pořadové číslo. Tuto metodu nelze dědit. |
událost
TailPinned |
Signalizuje, že je potřeba přesunout ocas sekvence. |