Fixes #621 - updated Documentation, test and sample code

spring-cloud-function-samples/function-sample-azure/src/main/java/example/Config.java

@@ -16,8 +16,11 @@
 
 package example;
 
+import java.io.IOException;
+import java.util.Map;
 import java.util.function.Function;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.Bean;
@@ -34,8 +37,24 @@ public class Config {
 	@Bean
 	public Function<String, String> uppercase(ExecutionContext context) {
 		return value -> {
-			context.getLogger().info("Uppercasing " + value);
-			return value.toUpperCase();
+			ObjectMapper mapper = new ObjectMapper();
+
+			try {
+				Map<String, String> map = mapper.readValue(value, Map.class);
+
+				if(map != null)
+					map.forEach((k, v) -> map.put(k, v != null ? v.toUpperCase() : null));
+
+				if(context != null)
+					context.getLogger().info(new StringBuilder().append("Function: ").append(context.getFunctionName()).append(" is uppercasing ").append(value.toString()).toString());
+
+				return mapper.writeValueAsString(map);
+			} catch (IOException e) {
+				if(context != null)
+					context.getLogger().severe("Function could not parse incoming request");
+
+				return ("Function error: - bad request");
+			}
 		};
 	}
 

spring-cloud-function-samples/function-sample-azure/src/test/java/example/MapTests.java

@@ -16,12 +16,13 @@
 
 package example;
 
+import com.microsoft.azure.functions.ExecutionContext;
 import org.junit.jupiter.api.Test;
+import java.util.logging.Logger;
+import static org.assertj.core.api.Assertions.assertThat;
 
 import org.springframework.cloud.function.adapter.azure.AzureSpringBootRequestHandler;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
 /**
  * @author Dave Syer
  *
@@ -32,9 +33,25 @@ public class MapTests {
 	public void start() throws Exception {
 		AzureSpringBootRequestHandler<String, String> handler = new AzureSpringBootRequestHandler<>(
 			Config.class);
-		String result = handler.handleRequest("foo", null);
-		handler.close();
-		assertThat(result).isEqualTo("FOO");
-	}
+		ExecutionContext ec = new ExecutionContext() {
+			@Override
+			public Logger getLogger() {
+				return Logger.getAnonymousLogger();
+			}
 
+			@Override
+			public String getInvocationId() {
+				return "id1";
+			}
+
+			@Override
+			public String getFunctionName() {
+				return "uppercase";
+			}
+		};
+
+		String result = handler.handleRequest("{\"greeting\": \"hello\",\"name\": \"your_name\"}", ec);
+		handler.close();
+		assertThat(result).isEqualTo("{\"greeting\":\"HELLO\",\"name\":\"YOUR_NAME\"}");
+	}
 }