perf(flamegraph): Move calltree generation into readjob

CHANGELOG.md

@@ -102,6 +102,7 @@
 - Lift Intervals struct to utils ([#498](https://github.com/getsentry/vroom/pull/498))
 - Fix flakey test for profile examples ([#504](https://github.com/getsentry/vroom/pull/504))
 - Instrument flamegraph generation with spans ([#510](https://github.com/getsentry/vroom/pull/510)), ([#511](https://github.com/getsentry/vroom/pull/511))
+- Move calltree generation into readjob ([#514](https://github.com/getsentry/vroom/pull/514))
 
 ## 23.12.0
 

internal/chunk/readjob.go

@@ -3,6 +3,7 @@ package chunk
 import (
 	"context"
 
+	"github.com/getsentry/vroom/internal/nodetree"
 	"github.com/getsentry/vroom/internal/storageutil"
 	"gocloud.dev/blob"
 )
@@ -55,3 +56,49 @@ func (job ReadJob) Read() {
 func (result ReadJobResult) Error() error {
 	return result.Err
 }
+
+type (
+	CallTreesReadJob ReadJob
+
+	CallTreesReadJobResult struct {
+		Err           error
+		CallTrees     map[string][]*nodetree.Node
+		Chunk         Chunk
+		TransactionID string
+		ThreadID      *string
+		Start         uint64
+		End           uint64
+	}
+)
+
+func (job CallTreesReadJob) Read() {
+	var chunk Chunk
+
+	err := storageutil.UnmarshalCompressed(
+		job.Ctx,
+		job.Storage,
+		StoragePath(job.OrganizationID, job.ProjectID, job.ProfilerID, job.ChunkID),
+		&chunk,
+	)
+
+	if err != nil {
+		job.Result <- CallTreesReadJobResult{Err: err}
+		return
+	}
+
+	callTrees, err := chunk.CallTrees(job.ThreadID)
+
+	job.Result <- CallTreesReadJobResult{
+		Err:           err,
+		CallTrees:     callTrees,
+		Chunk:         chunk,
+		TransactionID: job.TransactionID,
+		ThreadID:      job.ThreadID,
+		Start:         job.Start,
+		End:           job.End,
+	}
+}
+
+func (result CallTreesReadJobResult) Error() error {
+	return result.Err
+}

internal/flamegraph/flamegraph.go

@@ -488,7 +488,7 @@ func GetFlamegraphFromCandidates(
 	dispatchSpan.SetData("continuous_candidates", len(continuousProfileCandidates))
 
 	for _, candidate := range transactionProfileCandidates {
-		jobs <- profile.ReadJob{
+		jobs <- profile.CallTreesReadJob{
 			Ctx:            ctx,
 			OrganizationID: organizationID,
 			ProjectID:      candidate.ProjectID,
@@ -499,7 +499,7 @@ func GetFlamegraphFromCandidates(
 	}
 
 	for _, candidate := range continuousProfileCandidates {
-		jobs <- chunk.ReadJob{
+		jobs <- chunk.CallTreesReadJob{
 			Ctx:            ctx,
 			OrganizationID: organizationID,
 			ProjectID:      candidate.ProjectID,
@@ -513,6 +513,7 @@ func GetFlamegraphFromCandidates(
 			Result:         results,
 		}
 	}
+
 	dispatchSpan.Finish()
 
 	var flamegraphTree []*nodetree.Node
@@ -536,42 +537,28 @@ func GetFlamegraphFromCandidates(
 			continue
 		}
 
-		if result, ok := res.(profile.ReadJobResult); ok {
+		if result, ok := res.(profile.CallTreesReadJobResult); ok {
 			transactionProfileSpan := span.StartChild("calltree")
 			transactionProfileSpan.Description = "transaction profile"
 
-			profileCallTrees, err := result.Profile.CallTrees()
-			if err != nil {
-				hub.CaptureException(err)
-				transactionProfileSpan.Finish()
-				continue
-			}
-
 			example := utils.NewExampleFromProfileID(result.Profile.ProjectID(), result.Profile.ID())
 			annotate := annotateWithProfileExample(example)
 
-			for _, callTree := range profileCallTrees {
+			for _, callTree := range result.CallTrees {
 				addCallTreeToFlamegraph(&flamegraphTree, callTree, annotate)
 			}
 			// if metrics aggregator is not null, while we're at it,
 			// compute the metrics as well
 			if ma != nil {
-				functions := metrics.CapAndFilterFunctions(metrics.ExtractFunctionsFromCallTrees(profileCallTrees), int(ma.MaxUniqueFunctions), true)
+				functions := metrics.CapAndFilterFunctions(metrics.ExtractFunctionsFromCallTrees(result.CallTrees), int(ma.MaxUniqueFunctions), true)
 				ma.AddFunctions(functions, example)
 			}
 
 			transactionProfileSpan.Finish()
-		} else if result, ok := res.(chunk.ReadJobResult); ok {
+		} else if result, ok := res.(chunk.CallTreesReadJobResult); ok {
 			chunkProfileSpan := span.StartChild("calltree")
 			chunkProfileSpan.Description = "continuous profile"
 
-			chunkCallTrees, err := result.Chunk.CallTrees(result.ThreadID)
-			if err != nil {
-				hub.CaptureException(err)
-				chunkProfileSpan.Finish()
-				continue
-			}
-
 			example := utils.NewExampleFromProfilerChunk(
 				result.Chunk.ProjectID,
 				result.Chunk.ProfilerID,
@@ -583,7 +570,7 @@ func GetFlamegraphFromCandidates(
 			)
 			annotate := annotateWithProfileExample(example)
 
-			for _, callTree := range chunkCallTrees {
+			for _, callTree := range result.CallTrees {
 				if result.Start > 0 && result.End > 0 {
 					interval := utils.Interval{
 						Start: result.Start,
@@ -596,7 +583,7 @@ func GetFlamegraphFromCandidates(
 			// if metrics aggregator is not null, while we're at it,
 			// compute the metrics as well
 			if ma != nil {
-				functions := metrics.CapAndFilterFunctions(metrics.ExtractFunctionsFromCallTrees(chunkCallTrees), int(ma.MaxUniqueFunctions), true)
+				functions := metrics.CapAndFilterFunctions(metrics.ExtractFunctionsFromCallTrees(result.CallTrees), int(ma.MaxUniqueFunctions), true)
 				ma.AddFunctions(functions, example)
 			}
 			chunkProfileSpan.Finish()

internal/profile/readjob.go

@@ -3,6 +3,7 @@ package profile
 import (
 	"context"
 
+	"github.com/getsentry/vroom/internal/nodetree"
 	"github.com/getsentry/vroom/internal/storageutil"
 	"gocloud.dev/blob"
 )
@@ -39,3 +40,41 @@ func (job ReadJob) Read() {
 func (result ReadJobResult) Error() error {
 	return result.Err
 }
+
+type (
+	CallTreesReadJob ReadJob
+
+	CallTreesReadJobResult struct {
+		Err       error
+		CallTrees map[uint64][]*nodetree.Node
+		Profile   Profile
+	}
+)
+
+func (job CallTreesReadJob) Read() {
+	var profile Profile
+
+	err := storageutil.UnmarshalCompressed(
+		job.Ctx,
+		job.Storage,
+		StoragePath(job.OrganizationID, job.ProjectID, job.ProfileID),
+		&profile,
+	)
+
+	if err != nil {
+		job.Result <- CallTreesReadJobResult{Err: err}
+		return
+	}
+
+	callTrees, err := profile.CallTrees()
+
+	job.Result <- CallTreesReadJobResult{
+		CallTrees: callTrees,
+		Profile:   profile,
+		Err:       err,
+	}
+}
+
+func (result CallTreesReadJobResult) Error() error {
+	return result.Err
+}