public static BsonReader Create(
BsonBuffer buffer,
BsonBinaryReaderSettings settings
)
{
return new BsonBinaryReader(buffer, settings);
}
public static BsonWriter Create(
BsonBuffer buffer,
BsonBinaryWriterSettings settings
)
{
return new BsonBinaryWriter(null, buffer, settings);
}
public static BsonReader Create(
Stream stream,
BsonBinaryReaderSettings settings
)
{
BsonBuffer buffer = new BsonBuffer();
buffer.LoadFrom(stream);
return new BsonBinaryReader(buffer, settings);
}
public BsonBinaryReader(
BsonBuffer buffer,
BsonBinaryReaderSettings settings
) {
this.buffer = buffer ?? new BsonBuffer();
this.disposeBuffer = buffer == null; // only call Dispose if we allocated the buffer
this.settings = settings;
context = new BsonBinaryReaderContext(null, BsonReadState.Initial);
}
public void Dispose()
{
if (!disposed) {
if (disposeBuffer) {
buffer.Dispose();
}
buffer = null;
disposed = true;
}
}
protected MongoRequestMessage(
MessageOpcode opcode,
BsonBuffer buffer // not null if piggybacking this message onto an existing buffer
)
: base(opcode)
{
this.buffer = buffer ?? new BsonBuffer();
this.disposeBuffer = buffer == null; // only call Dispose if we allocated the buffer
this.requestId = Interlocked.Increment(ref lastRequestId);
}
public override void Dispose() {
if (!disposed) {
Close();
if (disposeBuffer) {
buffer.Dispose();
buffer = null;
}
disposed = true;
}
}
protected void ReadMessageHeaderFrom(
BsonBuffer buffer
)
{
messageLength = buffer.ReadInt32();
requestId = buffer.ReadInt32();
responseTo = buffer.ReadInt32();
if ((MessageOpcode) buffer.ReadInt32() != opcode) {
throw new FileFormatException("Message header opcode is not the expected one");
}
}
public BsonBinaryWriter(
Stream stream,
BsonBuffer buffer,
BsonBinaryWriterSettings settings
) {
this.stream = stream;
this.buffer = buffer ?? new BsonBuffer();
this.disposeBuffer = buffer == null; // only call Dispose if we allocated the buffer
this.settings = settings;
context = new BsonBinaryWriterContext(null, BsonWriteState.Initial);
}
public void TestBenchmarks()
{
int iterations;
DateTime start;
DateTime end;
TimeSpan duration;
iterations = 1;
start = DateTime.UtcNow;
for (int i = 0; i < iterations; i++) {
// about 2.06 on my machine
//var doc = new BsonDocument {
// { "a", 1 },
// { "b", 2.0 },
// { "c", "hello" },
// { "d", DateTime.UtcNow },
// { "e", true }
// };
byte[] value = { 1, 2, 3, 4 };
MemoryStream stream = new MemoryStream();
for (int n = 0; n < 100000; n++) {
stream.Write(value, 0, 4);
}
}
end = DateTime.UtcNow;
duration = end - start;
System.Diagnostics.Debug.WriteLine(duration);
start = DateTime.UtcNow;
for (int i = 0; i < iterations; i++) {
// about 2.22 on my machine
//var doc = new BsonDocument {
// { "a", BsonValue.Create((object) 1) },
// { "b", BsonValue.Create((object) 2.0) },
// { "c", BsonValue.Create((object) "hello") },
// { "d", BsonValue.Create((object) DateTime.UtcNow) },
// { "e", BsonValue.Create((object) true) }
//};
byte[] value = { 1, 2, 3, 4 };
var buffer = new BsonBuffer();
for (int n = 0; n < 100000; n++) {
buffer.WriteBytes(value);
}
}
end = DateTime.UtcNow;
duration = end - start;
System.Diagnostics.Debug.WriteLine(duration);
}
public static BsonReader Create(
BsonBuffer buffer
)
{
return Create(buffer, BsonBinaryReaderSettings.Defaults);
}
protected void WriteMessageHeaderTo(
BsonBuffer buffer
)
{
buffer.WriteInt32(0); // messageLength will be backpatched later
buffer.WriteInt32(requestId);
buffer.WriteInt32(0); // responseTo not used in requests sent by client
buffer.WriteInt32((int) opcode);
}
