From d6f6ccefda7251002e0413b9fd6508fffce6c02b Mon Sep 17 00:00:00 2001
From: Andy Staples <andystaples@microsoft.com>
Date: Wed, 2 Jul 2025 12:04:33 -0600
Subject: [PATCH 1/2] DT change PoC

---
 ...osoft.Azure.Functions.PowerShellWorker.psm1 | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1 b/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1
index 7c1c5396..8a48603e 100644
--- a/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1
+++ b/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1
@@ -132,9 +132,25 @@ function Start-DurableOrchestration {
         }
 
     $Body = $InputObject | ConvertTo-Json -Compress
+
+    try {
+        $activity = Start-FunctionsOpenTelemetrySpan
+        $traceID = $activity.activity.TraceId
+        # Do whatever you need to do with the trace information using the activity here
+    } catch {
+        # Do something better - correctly handle errors when the OTel SDK is not available
+        # Output errors from this command in a reasonable way
+        # Detect if calling Stop-FunctionsOpenTelemetrySpan is necessary and change that logic too
+    }
               
     $null = Invoke-RestMethod -Uri $Uri -Method 'POST' -ContentType 'application/json' -Body $Body
-    
+
+    try {
+        Stop-FunctionsOpenTelemetrySpan -Activity $activity
+    } catch {
+        # Do something better here
+    }
+
     return $instanceId
 }
 

From 46daa71177efaa10add1ebc3282f77beed20880d Mon Sep 17 00:00:00 2001
From: Varshitha Bachu <vabachu@microsoft.com>
Date: Thu, 3 Jul 2025 17:54:47 -0700
Subject: [PATCH 2/2] updated how traceparent is created

---
 ...soft.Azure.Functions.PowerShellWorker.psm1 | 25 ++++++++++++++++---
 1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1 b/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1
index 8a48603e..8cd09af7 100644
--- a/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1
+++ b/src/Modules/Microsoft.Azure.Functions.PowerShellWorker/Microsoft.Azure.Functions.PowerShellWorker.psm1
@@ -133,9 +133,28 @@ function Start-DurableOrchestration {
 
     $Body = $InputObject | ConvertTo-Json -Compress
 
+    $invokeParams = @{
+        Uri         = $Uri
+        Method      = 'POST'
+        ContentType = 'application/json'
+        Body        = $Body
+    }
+
     try {
-        $activity = Start-FunctionsOpenTelemetrySpan
-        $traceID = $activity.activity.TraceId
+        $activity = Start-FunctionsOpenTelemetrySpan -ActivityName "Starting orchestration"
+
+        $traceId = $activity.activity.TraceId
+        $spanId = $activity.activity.SpanId
+
+        # Construct the traceparent header
+        $traceParent = "00-$traceId-$spanId-01"
+
+        $traceState = $activity.activity.TraceState
+
+        $invokeParams.Headers = @{
+            'traceparent' = $traceParent
+            'tracestate'  = $traceState
+        }
         # Do whatever you need to do with the trace information using the activity here
     } catch {
         # Do something better - correctly handle errors when the OTel SDK is not available
@@ -143,7 +162,7 @@ function Start-DurableOrchestration {
         # Detect if calling Stop-FunctionsOpenTelemetrySpan is necessary and change that logic too
     }
               
-    $null = Invoke-RestMethod -Uri $Uri -Method 'POST' -ContentType 'application/json' -Body $Body
+    $null = Invoke-RestMethod @invokeParams
 
     try {
         Stop-FunctionsOpenTelemetrySpan -Activity $activity