Adding a web app custom handler configuration profile. (#11447)

* Adding a web app custom handler configuration profile.

* Minor PR feedback updates

Author: fabiocav

release_notes.md

@@ -2,4 +2,5 @@
 
 <!-- Please add your release notes in the following format:
 - My change description (#PR)
--->
+-->
+- Adding a "web app" configuration profile (#11447)

src/WebJobs.Script/Config/HostConfigurationProfile.cs

@@ -3,36 +3,37 @@
 
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Microsoft.Extensions.Configuration;
 
 namespace Microsoft.Azure.WebJobs.Script.Configuration
 {
     public sealed class HostConfigurationProfile
     {
-        public const string SectionKey = "configurationProfile";
+        private const string SectionKey = "configurationProfile";
 
         // note: profile name consts are intentionally private.
         // This ensures tests will fail if these values are changed without updating the test also.
         private const string DefaultProfile = "default";
 
-        private const string McpCustomerHandlerProfile = "mcp-custom-handler";
+        private const string McpCustomHandlerProfile = "mcp-custom-handler";
+
+        private const string WebAppCustomHandlerProfile = "web-app-custom-handler";
 
         // Make sure to update this as new profiles are added.
-        private const string SupportedValues = $"'', '{DefaultProfile}', '{McpCustomerHandlerProfile}'";
+        private const string SupportedValues = $"'', '{DefaultProfile}', '{McpCustomHandlerProfile}', '{WebAppCustomHandlerProfile}'";
+
+        private static readonly Dictionary<string, string> CommonHttpCustomHandlerConfiguration = new()
+        {
+            [ConfigurationPath.Combine(ConfigurationSectionNames.CustomHandler, ScriptConstants.EnableProxyingHttpRequest)] = "true",
+            [ConfigurationPath.Combine(ConfigurationSectionNames.Http, "routePrefix")] = string.Empty,
+            [ConfigurationPath.Combine(ConfigurationSectionNames.CustomHandler, "http", "routes", "0", "route")] = "{*route}"
+        };
 
         public static readonly HostConfigurationProfile Default = new(DefaultProfile, []);
 
-        public static readonly HostConfigurationProfile McpCustomHandler = new(
-            McpCustomerHandlerProfile,
-            [
-                KeyValuePair.Create(ConfigurationPath.Combine(
-                    ConfigurationSectionNames.CustomHandler, ScriptConstants.EnableProxyingHttpRequest), "true"),
-                KeyValuePair.Create(ConfigurationPath.Combine(
-                    ConfigurationSectionNames.Http, "routePrefix"), string.Empty),
-                KeyValuePair.Create(ConfigurationPath.Combine(
-                    ConfigurationSectionNames.CustomHandler, "http", "routes", "0", "route"), "{*route}"),
-            ]);
+        public static readonly HostConfigurationProfile McpCustomHandler = new(McpCustomHandlerProfile, CommonHttpCustomHandlerConfiguration);
+
+        public static readonly HostConfigurationProfile WebAppCustomHandler = new(WebAppCustomHandlerProfile, CommonHttpCustomHandlerConfiguration);
 
         private HostConfigurationProfile(
             string name,
@@ -49,9 +50,11 @@ private HostConfigurationProfile(
         public static HostConfigurationProfile Get(string name)
         {
             ArgumentNullException.ThrowIfNull(name);
+
             return name.ToLowerInvariant() switch
             {
-                McpCustomerHandlerProfile => McpCustomHandler,
+                McpCustomHandlerProfile => McpCustomHandler,
+                WebAppCustomHandlerProfile => WebAppCustomHandler,
                 "" or DefaultProfile => Default,
                 _ => throw new NotSupportedException(
                         $"Configuration profile '{name}' is not supported. Supported values: {SupportedValues}."),

test/WebJobs.Script.Tests/Configuration/HostConfigurationProfileTests.cs

@@ -29,15 +29,18 @@ public void Get_Default_ReturnsExpectedProfile(string name)
         [Theory]
         [InlineData("mcp-custom-handler")]
         [InlineData("MCP-Custom-Handler")]
-        public void Get_Mcp_ReturnsExpectedProfile(string name)
+        [InlineData("web-app-Custom-Handler")]
+        [InlineData("WEB-App-Custom-Handler")]
+        public void Get_HttpBasedHandler_ReturnsExpectedProfile(string name)
         {
-            HostConfigurationProfile profile = HostConfigurationProfile.Get(name);
+            var expectedProfileName = name.ToLowerInvariant();
 
+            HostConfigurationProfile profile = HostConfigurationProfile.Get(name);
             Dictionary<string, string> configDict = new(profile.Configuration);
-            profile.Name.Should().Be("mcp-custom-handler");
+            profile.Name.Should().Be(expectedProfileName);
             configDict.Should().HaveCount(4);
             configDict.Should().ContainKey("configurationProfile")
-                .WhoseValue.Should().Be("mcp-custom-handler");
+                .WhoseValue.Should().Be(expectedProfileName);
             configDict.Should().ContainKey("customHandler:enableProxyingHttpRequest")
                 .WhoseValue.Should().Be("true");
             configDict.Should().ContainKey("extensions:http:routePrefix")
@@ -60,7 +63,7 @@ public void Get_InvalidName_Throws()
 
             action.Should()
                 .ThrowExactly<NotSupportedException>()
-                .WithMessage("Configuration profile 'invalid' is not supported. Supported values: '', 'default', 'mcp-custom-handler'.");
+                .WithMessage("Configuration profile 'invalid' is not supported. Supported values: '', 'default', 'mcp-custom-handler', 'web-app-custom-handler'.");
         }
     }
 }