// <Snippet5>
// 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...");
}
static void Main2(string[] args)
{
try
{
string myLog = "MyMultiplexLog";
string logStream1 = "MyMultiplexLog::MyLogStream1";
string logStream2 = "MyMultiplexLog::MyLogStream2";
int containerSize = 32 * 1024;
LogRecordSequence sequence1 = null;
LogRecordSequence sequence2 = null;
Console.WriteLine("Creating Multiplexed log with two streams");
// <Snippet11>
// Create log stream 1.
sequence1 = new LogRecordSequence(logStream1,
FileMode.OpenOrCreate,
FileAccess.ReadWrite,
FileShare.ReadWrite);
// Log Extents are shared between the two streams.
// Add two extents to sequence1.
sequence1.LogStore.Extents.Add("MyExtent0", containerSize);
sequence1.LogStore.Extents.Add("MyExtent1");
// Create log stream 2.
sequence2 = new LogRecordSequence(logStream2,
FileMode.OpenOrCreate,
FileAccess.ReadWrite,
FileShare.ReadWrite);
// </Snippet11>
// <Snippet13>
// Start Appending in two streams with interleaving appends.
SequenceNumber previous1 = SequenceNumber.Invalid;
SequenceNumber previous2 = SequenceNumber.Invalid;
Console.WriteLine("Appending interleaving records in stream1 and stream2...");
Console.WriteLine();
// Append two records in stream1.
previous1 = sequence1.Append(
CreateData("MyLogStream1: Hello World!"),
SequenceNumber.Invalid,
SequenceNumber.Invalid,
RecordAppendOptions.ForceFlush);
previous1 = sequence1.Append(
CreateData("MyLogStream1: This is my first Logging App"),
previous1,
previous1,
RecordAppendOptions.ForceFlush);
// Append two records in stream2.
previous2 = sequence2.Append(
CreateData("MyLogStream2: Hello World!"),
SequenceNumber.Invalid,
SequenceNumber.Invalid,
RecordAppendOptions.ForceFlush);
previous2 = sequence2.Append(
CreateData("MyLogStream2: This is my first Logging App"),
previous2,
previous2,
RecordAppendOptions.ForceFlush);
// Append the third record in stream1.
previous1 = sequence1.Append(CreateData(
"MyLogStream1: Using LogRecordSequence..."),
previous1,
previous1,
RecordAppendOptions.ForceFlush);
// Append the third record in stream2.
previous2 = sequence2.Append(
CreateData("MyLogStream2: Using LogRecordSequence..."),
previous2,
previous2,
RecordAppendOptions.ForceFlush);
// </Snippet13>
// Read the log records from stream1 and stream2.
Encoding enc = Encoding.Unicode;
Console.WriteLine();
Console.WriteLine("Reading Log Records from stream1...");
// <Snippet10>
foreach (LogRecord record in sequence1.ReadLogRecords(sequence1.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);
}
// </Snippet10>
Console.WriteLine();
Console.WriteLine("Reading the log records from stream2...");
foreach (LogRecord record in sequence2.ReadLogRecords(sequence2.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);
}
// <Snippet12>
Console.WriteLine();
// Cleanup...
sequence1.Dispose();
sequence2.Dispose();
// </Snippet12>
LogStore.Delete(myLog);
Console.WriteLine("Done...");
}
catch (Exception e)
{
Console.WriteLine("Exception thrown {0} {1}", e.GetType(), e.Message);
}
}