public void HandleBefore()
{
Utils.DebugLogIfEnabled("lambda invoke event - START");
var coldStart = _coldStart;
_coldStart = false;
var awsRequestId = context.AwsRequestId != "1234567890" ? context.AwsRequestId : $"local-{Guid.NewGuid()}";
var awsAccount = this.context.InvokedFunctionArn.Split(':')[AWS_ACCOUNT_INDEX];
var awsRegion = Environment.GetEnvironmentVariable("AWS_REGION");
this.scope.Span.SetTag("event.id", awsRequestId);
this.scope.Span.SetTag("event.origin", "runner");
this.scope.Span.SetTag("event.error_code", 0); // OK
this.scope.Span.SetTag("resource.type", "lambda");
this.scope.Span.SetTag("resource.name", this.context.FunctionName);
this.scope.Span.SetTag("aws.agent", "aws-sdk");
this.scope.Span.SetTag("aws.service", "lambda");
this.scope.Span.SetTag("resource.operation", "invoke");
this.scope.Span.SetTag("aws.lambda.aws_account", awsAccount);
this.scope.Span.SetTag("aws.lambda.region", awsRegion);
this.scope.Span.SetTag("aws.lambda.memory", this.context.MemoryLimitInMB.ToString());
this.scope.Span.SetTag("aws.lambda.function_version", this.context.FunctionVersion);
this.scope.Span.SetTag("aws.lambda.log_group_name", this.context.LogGroupName);
this.scope.Span.SetTag("aws.lambda.log_stream_name", this.context.LogStreamName);
this.scope.Span.SetTag("aws.lambda.cold_start", coldStart);
EpsagonUtils.SetLambdaTraceUrl(awsAccount, awsRegion, this.context.FunctionName, awsRequestId);
}
private static void CreateTraceAndSend()
{
var trace = EpsagonConverter.CreateTrace(JaegerTracer.GetSpans());
EpsagonTrace.SendTrace(trace);
JaegerTracer.Clear();
EpsagonUtils.ClearTraceUrl();
}
public void HandleAfter(TRes returnValue)
{
this.scope.Span.SetTag("aws.lambda.return_value", JsonConvert.SerializeObject(returnValue, new JsonSerializerSettings()
{
ReferenceLoopHandling = ReferenceLoopHandling.Ignore
}));
EpsagonUtils.ClearTraceUrl();
Utils.DebugLogIfEnabled("lambda invoke event - FINISHED");
}
private static IScope CreateRunner(string methodName)
{
var scope = GlobalTracer.Instance.BuildSpan("invoke").StartActive(finishSpanOnDispose: true);
string traceId = Guid.NewGuid().ToString();
string startTime = ((int)DateTime.UtcNow.ToUnixTime()).ToString();
scope.Span.SetTag("event.id", Guid.NewGuid().ToString());
scope.Span.SetTag("event.origin", "runner");
scope.Span.SetTag("resource.name", methodName);
scope.Span.SetTag("resource.type", "dotnet_function");
scope.Span.SetTag("resource.operation", "invoke");
scope.Span.SetTag("trace_id", traceId);
EpsagonUtils.SetTraceUrl(traceId, startTime);
return(scope);
}
public static T Handle <T>(Func <T> clientFn, HttpContext context)
{
if (Utils.CurrentConfig == null || Utils.CurrentConfig.IsEpsagonDisabled)
{
return(clientFn());
}
T result;
var startTime = new DateTimeOffset(DateTime.UtcNow);
using (var scope = CreateRunner(context)) {
result = ExecuteClientCode(clientFn, scope);
}
CreateTrigger(context, startTime);
var trace = EpsagonConverter.CreateTrace(JaegerTracer.GetSpans());
EpsagonTrace.SendTrace(trace);
JaegerTracer.Clear();
EpsagonUtils.ClearTraceUrl();
return(result);
}
