internal Span StartSpan(IApmAgent agent, IDbCommand dbCommand, InstrumentationFlag instrumentationFlag, string subType = null,
bool captureStackTraceOnStart = false
)
{
var spanName = dbCommand.CommandText.Replace(Environment.NewLine, " ");
return(ExecutionSegmentCommon.StartSpanOnCurrentExecutionSegment(agent, spanName, ApiConstants.TypeDb, subType, instrumentationFlag,
captureStackTraceOnStart));
}
internal ISpan StartSpan(IApmAgent agent, IDbCommand dbCommand, InstrumentationFlag instrumentationFlag, string subType = null,
bool captureStackTraceOnStart = false
)
{
var spanName = GetDbSpanName(dbCommand);
return(ExecutionSegmentCommon.StartSpanOnCurrentExecutionSegment(agent, spanName, ApiConstants.TypeDb, subType, instrumentationFlag,
captureStackTraceOnStart, true));
}
public Span(
string name,
string type,
string parentId,
string traceId,
Transaction enclosingTransaction,
IPayloadSender payloadSender,
IApmLogger logger,
ICurrentExecutionSegmentsContainer currentExecutionSegmentsContainer,
Span parentSpan = null,
InstrumentationFlag instrumentationFlag = InstrumentationFlag.None,
bool captureStackTraceOnStart = false
)
{
InstrumentationFlag = instrumentationFlag;
Timestamp = TimeUtils.TimestampNow();
Id = RandomGenerator.GenerateRandomBytesAsString(new byte[8]);
_logger = logger?.Scoped($"{nameof(Span)}.{Id}");
_payloadSender = payloadSender;
_currentExecutionSegmentsContainer = currentExecutionSegmentsContainer;
_parentSpan = parentSpan;
_enclosingTransaction = enclosingTransaction;
Name = name;
Type = type;
ParentId = parentId;
TraceId = traceId;
if (IsSampled)
{
// Started and dropped spans should be counted only for sampled transactions
if (enclosingTransaction.SpanCount.IncrementTotal() > ConfigSnapshot.TransactionMaxSpans &&
ConfigSnapshot.TransactionMaxSpans >= 0)
{
_isDropped = true;
enclosingTransaction.SpanCount.IncrementDropped();
}
else
{
enclosingTransaction.SpanCount.IncrementStarted();
if (captureStackTraceOnStart)
{
_stackFrames = new EnhancedStackTrace(new StackTrace(true)).GetFrames();
}
}
}
_currentExecutionSegmentsContainer.CurrentSpan = this;
_logger.Trace()
?.Log("New Span instance created: {Span}. Start time: {Time} (as timestamp: {Timestamp}). Parent span: {Span}",
this, TimeUtils.FormatTimestampForLog(Timestamp), Timestamp, _parentSpan);
}
internal Span StartSpanInternal(string name, string type, string subType = null, string action = null,
InstrumentationFlag instrumentationFlag = InstrumentationFlag.None, bool captureStackTraceOnStart = false
)
{
var retVal = new Span(name, type, Id, TraceId, _enclosingTransaction, _payloadSender, _logger, _currentExecutionSegmentsContainer, this,
instrumentationFlag, captureStackTraceOnStart);
if (!string.IsNullOrEmpty(subType))
{
retVal.Subtype = subType;
}
if (!string.IsNullOrEmpty(action))
{
retVal.Action = action;
}
_logger.Trace()?.Log("Starting {SpanDetails}", retVal.ToString());
return(retVal);
}
public Span(
string name,
string type,
string parentId,
string traceId,
Transaction enclosingTransaction,
IPayloadSender payloadSender,
IApmLogger logger,
ICurrentExecutionSegmentsContainer currentExecutionSegmentsContainer,
IApmServerInfo apmServerInfo,
Span parentSpan = null,
InstrumentationFlag instrumentationFlag = InstrumentationFlag.None,
bool captureStackTraceOnStart = false
)
{
InstrumentationFlag = instrumentationFlag;
Timestamp = TimeUtils.TimestampNow();
Id = RandomGenerator.GenerateRandomBytesAsString(new byte[8]);
_logger = logger?.Scoped($"{nameof(Span)}.{Id}");
_payloadSender = payloadSender;
_currentExecutionSegmentsContainer = currentExecutionSegmentsContainer;
_parentSpan = parentSpan;
_enclosingTransaction = enclosingTransaction;
_apmServerInfo = apmServerInfo;
Name = name;
Type = type;
ParentId = parentId;
TraceId = traceId;
if (IsSampled)
{
SampleRate = enclosingTransaction.SampleRate;
// Started and dropped spans should be counted only for sampled transactions
if (enclosingTransaction.SpanCount.IncrementTotal() > ConfigSnapshot.TransactionMaxSpans &&
ConfigSnapshot.TransactionMaxSpans >= 0)
{
_isDropped = true;
enclosingTransaction.SpanCount.IncrementDropped();
}
else
{
enclosingTransaction.SpanCount.IncrementStarted();
// In some cases capturing the stacktrace in End() results in a stack trace which is not very useful.
// In such cases we capture the stacktrace on span start.
// These are typically async calls - e.g. capturing stacktrace for outgoing HTTP requests in the
// System.Net.Http.HttpRequestOut.Stop
// diagnostic source event produces a stack trace that does not contain the caller method in user code - therefore we
// capture the stacktrace is .Start
if (captureStackTraceOnStart && ConfigSnapshot.StackTraceLimit != 0 && ConfigSnapshot.SpanFramesMinDurationInMilliseconds != 0)
{
RawStackTrace = new StackTrace(true);
}
}
}
else
{
SampleRate = 0;
}
_currentExecutionSegmentsContainer.CurrentSpan = this;
_logger.Trace()
?.Log("New Span instance created: {Span}. Start time: {Time} (as timestamp: {Timestamp}). Parent span: {Span}",
this, TimeUtils.FormatTimestampForLog(Timestamp), Timestamp, _parentSpan);
}
static DbSpanFactory()
{
_type = typeof(T);
_instrumentationFlag = GetInstrumentationFlag(_type.FullName);
}
