Feat: Adds functions_helloworld_background (GoogleCloudPlatform#1549)

grant · web-flow · commit c2bc743d380e · 2019-08-15T15:19:56.000-07:00
diff --git a/functions/snippets/src/main/java/HelloBackground.java b/functions/snippets/src/main/java/HelloBackground.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// [START functions_helloworld_background]
+import com.google.gson.Gson;
+import com.google.gson.JsonObject;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.logging.Logger;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class HelloBackground {
+
+  // Use GSON (https://github.com/google/gson) to parse JSON content.
+  private Gson gsonParser = new Gson();
+
+  // Background Cloud Function.
+  public void helloBackground(HttpServletRequest request, HttpServletResponse response)
+      throws IOException {
+    String contentType = request.getContentType();
+    String name = "World";
+    JsonObject body = gsonParser.fromJson(request.getReader(), JsonObject.class);
+    if (body.has("name")) {
+      name = body.get("name").getAsString();
+    }
+    PrintWriter writer = response.getWriter();
+    writer.write(String.format("Hello %s!", name));
+  }
+}
+
+// [END functions_helloworld_background]
diff --git a/functions/snippets/src/test/java/SnippetsTests.java b/functions/snippets/src/test/java/SnippetsTests.java
@@ -149,4 +149,14 @@ public void retrieveLogsTest() throws IOException {
 
     assertThat(responseOut.toString(), containsString("Logs retrieved successfully."));
   }
+
+  @Test
+  public void helloBackgroundTest() throws IOException {
+    when(request.getContentType()).thenReturn("application/json");
+    BufferedReader bodyReader = new BufferedReader(new StringReader("{\"name\":\"John\"}"));
+    when(request.getReader()).thenReturn(bodyReader);
+
+    new HelloBackground().helloBackground(request, response);
+    assertThat(responseOut.toString(), containsString("Hello John!"));    
+  }
 }

Original file line number	Diff line number	Diff line change
`@@ -149,4 +149,14 @@ public void retrieveLogsTest() throws IOException {`
`149`	`149`
`150`	`150`	`assertThat(responseOut.toString(), containsString("Logs retrieved successfully."));`
`151`	`151`	`}`
	`152`	`+`
	`153`	`+ @Test`
	`154`	`+ public void helloBackgroundTest() throws IOException {`
	`155`	`+ when(request.getContentType()).thenReturn("application/json");`
	`156`	`+ BufferedReader bodyReader = new BufferedReader(new StringReader("{\"name\":\"John\"}"));`
	`157`	`+ when(request.getReader()).thenReturn(bodyReader);`
	`158`	`+`
	`159`	`+ new HelloBackground().helloBackground(request, response);`
	`160`	`+ assertThat(responseOut.toString(), containsString("Hello John!"));`
	`161`	`+ }`
`152`	`162`	`}`