Functions Concepts Filesystem (GoogleCloudPlatform#1574)

grant · web-flow · commit c9aab34adf44 · 2019-09-09T17:38:54.000-03:00
* feat: Add functions_concepts_filesystem

* feat: Add Functions filesystem snippet

* style: Functions Filesystem self review

* feat: functions FS.listFiles print stack trace

* fix: Simplifies Functions FS list files

* fix: Fixes lint issue

* fix: Fixes import order issue (again)
diff --git a/functions/snippets/src/main/java/FileSystem.java b/functions/snippets/src/main/java/FileSystem.java
@@ -0,0 +1,39 @@
+/*
+ * 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_concepts_filesystem]
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintWriter;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class FileSystem {
+
+  // Lists the files in the current directory.
+  public void listFiles(HttpServletRequest request, HttpServletResponse response)
+      throws IOException {
+    File curDir = new File(".");
+    File[] files = curDir.listFiles();
+    PrintWriter writer = response.getWriter();
+    writer.write("Files: \n");
+    for (File f : files) {
+      writer.write(String.format("\t%s\n", f.getName()));
+    }
+  }
+}
+
+// [END functions_concepts_filesystem]
diff --git a/functions/snippets/src/test/java/SnippetsTests.java b/functions/snippets/src/test/java/SnippetsTests.java
@@ -173,6 +173,12 @@ public void helloBackgroundTest() throws IOException {
     assertThat(responseOut.toString(), containsString("Hello John!"));    
   }
 
+  @Test
+  public void filesTest() throws IOException {
+    new FileSystem().listFiles(request, response);
+    assertThat(responseOut.toString(), containsString("Files:"));
+  }
+
   @Test
   public void envTest() throws IOException {
     environmentVariables.set("FOO", "BAR");
