Merge pull request #12725 from Budibase/run-js-traces

Add some more spans to the JS runner

packages/server/src/jsRunner.ts

@@ -12,9 +12,13 @@ export function init() {
       const perRequestLimit = env.JS_PER_REQUEST_TIME_LIMIT_MS
       let track: TrackerFn = f => f()
       if (perRequestLimit) {
+        tracer.trace<any>("runJS.setupTracker", {}, span => {
           const bbCtx = context.getCurrentContext()
           if (bbCtx) {
             if (!bbCtx.jsExecutionTracker) {
+              span?.addTags({
+                createdExecutionTracker: true,
+              })
               bbCtx.jsExecutionTracker =
                 timers.ExecutionTimeTracker.withLimit(perRequestLimit)
             }
@@ -27,22 +31,33 @@ export function init() {
             // We call checkLimit() here to prevent paying the cost of creating
             // a new VM context below when we don't need to.
             bbCtx.jsExecutionTracker.checkLimit()
-          track = bbCtx.jsExecutionTracker.track.bind(bbCtx.jsExecutionTracker)
+            track = bbCtx.jsExecutionTracker.track.bind(
+              bbCtx.jsExecutionTracker
+            )
           }
+        })
       }
 
-      ctx = {
+      ctx = tracer.trace("runJS.ctxClone", {}, span => {
+        return {
           ...ctx,
           alert: undefined,
           setInterval: undefined,
           setTimeout: undefined,
         }
+      })
+
+      tracer.trace("runJS.vm.createContext", {}, span => {
         vm.createContext(ctx)
+      })
+
       return track(() =>
+        tracer.trace("runJS.vm.runInNewContext", {}, span =>
           vm.runInNewContext(js, ctx, {
             timeout: env.JS_PER_EXECUTION_TIME_LIMIT_MS,
           })
         )
+      )
     })
   })
 }