Olympusat Node SDK

Reusable components for building Node applications in the Oly Cloud Platform

XRAY Tracing

Provides a simpler, unobtrusive interface for using XRAY to trace an application including decorators. All helpers return the values of the functions they call.

import XRAY from 'oly-node-sdk/build/src/xray'

• XRAY.openTraceSegment(myFunction, label, options).then(...)
  • Required to call this at the head of your execution tree to open a context for tracing
  • Opens a trace segment on myFunction which can have subsegments to granularly trace program execution
  • label represents the name/label of the trace in AWS XRAY dashboard
  • options can include HTTP request information, metadata and xray annotations. See typescript annotations for more details.
  • Returns the result of myFunction()
• Synchronus Functions
  • XRAY.traceFunction(myFunction, label, options): Traces non-async function and returns the result
  • XRAY.decorateMethod(label, options): Can be used with typescript class method decorator syntax to decorate a method with XRAY.traceFunction
  • XRAY.decorateFunction(myFunction, label, options): Returns a myFunction decorated with XRAY.traceFunction, useful for reuse and calling with arguments.
• Asynchronus Functions
  • XRAY.traceAsyncFunction(myFunction, label, options): Traces async function and returns the result in a promise
  • XRAY.decorateAsyncMethod(label, options): Can be used with typescript class method decorator syntax to decorate an async method with XRAY.traceAsyncFunction
  • XRAY.decorateAsyncFunction(myFunction, label, options): Returns a myFunction decorated with XRAY.traceAsyncFunction, useful for reuse and calling with arguments.