Add Azure Functions support with spring-cloud-function-adapter-azure-web

- Replace spring-cloud-function-context with spring-cloud-function-adapter-azure-web 5.0.1
- Add azure-functions-maven-plugin 1.41.0 for building and running Azure Functions
- Add spring-boot-thin-layout for thin JAR packaging
- Set start-class property for Azure Function runtime entry point
- Create host.json for Azure Functions runtime configuration
- Create local.settings.json for local development
- Update .gitignore with Azure Functions artifacts
- Update README with build/run/deploy instructions

Agent-Logs-Url: https://github.com/eggboy/springcloud-azurefunction/sessions/1bca7a50-e3eb-449d-a47f-1fef2633218f

Co-authored-by: eggboy <825593+eggboy@users.noreply.github.com>

Author: Copilot

.gitignore

@@ -31,3 +31,8 @@ build/
 
 ### VS Code ###
 .vscode/
+
+### Azure Functions ###
+local.settings.json
+obj/
+bin/

README.md

@@ -1,3 +1,38 @@
 [![CodeQL](https://github.com/eggboy/springcloud-azurefunction/actions/workflows/codeql.yml/badge.svg)](https://github.com/eggboy/springcloud-azurefunction/actions/workflows/codeql.yml)
 # springcloud-azurefunction
-Azure Function built with Spring Cloud Function in Java 17
+Azure Function built with Spring Cloud Function in Java 21
+
+## Prerequisites
+
+- JDK 21
+- Maven
+- [Azure Functions Core Tools](https://learn.microsoft.com/en-us/azure/azure-functions/functions-run-local) v4+
+
+## Build
+
+```shell
+mvn clean package
+```
+
+## Run Locally
+
+```shell
+mvn azure-functions:run
+```
+
+Then use `curl` to interact with the REST API:
+
+```shell
+# Create a user
+curl -X POST -H 'Content-Type:application/json' http://localhost:7072/api/AzureWebAdapter/user -d '{"userId":"1","lastName":"Doe","firstName":"John","email":"john@example.com"}'
+
+# Get a user
+curl -X GET http://localhost:7072/api/AzureWebAdapter/user/1
+```
+
+## Deploy to Azure
+
+```shell
+az login
+mvn azure-functions:deploy
+```

pom.xml

@@ -16,6 +16,13 @@
     <properties>
         <java.version>21</java.version>
         <spring-cloud.version>2025.0.2</spring-cloud.version>
+        <spring-boot-thin-layout.version>1.0.31.RELEASE</spring-boot-thin-layout.version>
+        <spring-cloud-function-adapter-azure-web.version>5.0.1</spring-cloud-function-adapter-azure-web.version>
+        <start-class>io.jaylee.springcloud.AzurefunctionApplication</start-class>
+        <azure.functions.maven.plugin.version>1.41.0</azure.functions.maven.plugin.version>
+        <functionAppName>springcloud-azurefunction</functionAppName>
+        <functionAppRegion>koreacentral</functionAppRegion>
+        <functionResourceGroup>java-functions-group</functionResourceGroup>
     </properties>
     <dependencies>
         <dependency>
@@ -28,7 +35,8 @@
         </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>
-            <artifactId>spring-cloud-function-context</artifactId>
+            <artifactId>spring-cloud-function-adapter-azure-web</artifactId>
+            <version>${spring-cloud-function-adapter-azure-web.version}</version>
         </dependency>
 
         <dependency>
@@ -61,6 +69,43 @@
 
     <build>
         <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-deploy-plugin</artifactId>
+                <configuration>
+                    <skip>true</skip>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>com.microsoft.azure</groupId>
+                <artifactId>azure-functions-maven-plugin</artifactId>
+                <version>${azure.functions.maven.plugin.version}</version>
+                <configuration>
+                    <appName>${functionAppName}</appName>
+                    <resourceGroup>${functionResourceGroup}</resourceGroup>
+                    <region>${functionAppRegion}</region>
+                    <hostJson>${project.basedir}/src/main/resources/host.json</hostJson>
+                    <runtime>
+                        <os>linux</os>
+                        <javaVersion>21</javaVersion>
+                    </runtime>
+                    <funcPort>7072</funcPort>
+                    <appSettings>
+                        <property>
+                            <name>FUNCTIONS_EXTENSION_VERSION</name>
+                            <value>~4</value>
+                        </property>
+                    </appSettings>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>package-functions</id>
+                        <goals>
+                            <goal>package</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
@@ -72,6 +117,13 @@
                         </exclude>
                     </excludes>
                 </configuration>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.springframework.boot.experimental</groupId>
+                        <artifactId>spring-boot-thin-layout</artifactId>
+                        <version>${spring-boot-thin-layout.version}</version>
+                    </dependency>
+                </dependencies>
             </plugin>
         </plugins>
     </build>

src/main/resources/host.json

@@ -0,0 +1,7 @@
+{
+    "version": "2.0",
+    "extensionBundle": {
+        "id": "Microsoft.Azure.Functions.ExtensionBundle",
+        "version": "[4.*, 5.0.0)"
+    }
+}