Expose retry context to custom handlers (#7768)

Author: madelinegordon

azure-pipelines.yml

@@ -349,6 +349,7 @@ jobs:
     inputs:
       targetType: 'inline'
       script: 'Install-Module -Name Az.Storage -RequiredVersion 1.11.0 -Scope CurrentUser -Force -AllowClobber'
+
   - task: AzureKeyVault@1
     inputs:
       # Note: This is actually a Service Connection in DevOps, not an Azure subscription name
@@ -410,6 +411,11 @@ jobs:
     inputs:
       targetType: 'inline'
       script: 'Install-Module -Name Az.Storage -RequiredVersion 1.11.0 -Scope CurrentUser -Force -AllowClobber'
+  - task: Npm@1
+    displayName: 'npm ci'
+    inputs:
+      command: ci
+      workingDir: sample/CustomHandlerRetry
   - task: AzureKeyVault@1
     inputs:
       # Note: This is actually a Service Connection in DevOps, not an Azure subscription name

sample/CustomHandlerRetry/HttpTrigger/function.json

@@ -0,0 +1,19 @@
+{
+  "bindings": [
+    {
+      "authLevel": "anonymous",
+      "type": "httpTrigger",
+      "direction": "in",
+      "name": "req",
+      "methods": [
+        "get",
+        "post"
+      ]
+    },
+    {
+      "type": "http",
+      "direction": "out",
+      "name": "res"
+    }
+  ]
+}

sample/CustomHandlerRetry/host.json

@@ -0,0 +1,15 @@
+{
+  "version": "2.0",
+  "customHandler": {
+    "enableForwardingHttpRequest": false,
+    "description": {
+      "defaultExecutablePath": "node",
+      "arguments": [ "server.js" ]
+    }
+  },
+  "retry": {
+    "strategy": "fixedDelay",
+    "maxRetryCount": 2,
+    "delayInterval": "00:00:00"
+  }
+}