adds compute engine logging sample

.travis.yml

@@ -78,6 +78,11 @@ script:
   - if [ ${TRAVIS_PHP_VERSION} == '5.5' ]; then composer install; fi;
   - if [ ${TRAVIS_PHP_VERSION} == '5.5' ]; then env PHP_CGI_PATH=`which php-cgi` LOCAL_TEST_TARGETS='app.yaml backend.yaml' phpunit; fi;
   - popd
+  # run compute engine logging tests
+  - pushd compute/logging
+  - composer install
+  - phpunit
+  - popd
 
 after_script:
   - composer require "satooshi/php-coveralls:^1.0"

compute/logging/README.md

@@ -0,0 +1,3 @@
+# Logging for Compute Engine
+
+This app demonstrates how to log to Compute Engine from a PHP application. Full instructions at [https://cloud.google.com/error-reporting/docs/setting-up-on-compute-engine](https://cloud.google.com/error-reporting/docs/setting-up-on-compute-engine)

compute/logging/composer.json

@@ -0,0 +1,5 @@
+{
+    "require": {
+        "fluent/logger": "^1.0"
+    }
+}

compute/logging/index.php

@@ -0,0 +1,23 @@
+<?php
+
+# [START logging]
+require_once __DIR__ . '/vendor/autoload.php';
+
+use Fluent\Logger\FluentLogger;
+
+$GLOBALS['logger'] = new FluentLogger('localhost', '24224');
+
+function fluentd_exception_handler(Exception $e)
+{
+    global $logger;
+
+    $msg = array(
+        'message' => $e->getMessage(),
+        'serviceContext' => array('service' => 'myapp'),
+        // ... add more metadata
+    );
+    $logger->post('myapp.errors', $msg);
+}
+
+set_exception_handler('fluentd_exception_handler');
+# [END logging]

compute/logging/phpunit.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Copyright 2016 Google Inc.
+
+  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.
+-->
+<phpunit bootstrap="test/bootstrap.php">
+    <testsuites>
+        <testsuite name="PHP GCE logging test">
+            <directory>test</directory>
+        </testsuite>
+    </testsuites>
+    <logging>
+        <log type="coverage-clover" target="../../build/logs/clover-gce-logging.xml"/>
+    </logging>
+    <filter>
+        <whitelist>
+            <file>index.php</file>
+        </whitelist>
+    </filter>
+</phpunit>

compute/logging/test/bootstrap.php

@@ -0,0 +1,4 @@
+<?php
+
+require_once __DIR__ . '/../vendor/autoload.php';
+require_once __DIR__ . '/mocks/FluentLogger.php';

compute/logging/test/loggingTest.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Copyright 2015 Google Inc. All Rights Reserved.
+ *
+ * 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.
+ */
+
+
+class compute_loggingTest extends PHPUnit_Framework_TestCase
+{
+    public function testExceptionHandler()
+    {
+        include __DIR__ . '/../index.php';
+        global $logger;
+
+        $lastHandler = set_exception_handler(null);
+        $this->assertEquals('fluentd_exception_handler', $lastHandler);
+
+        $exceptionMessage = 'testing exception handler';
+        $e = new Exception($exceptionMessage);
+        $lastHandler($e);
+        $this->assertEquals($logger->prefix, 'myapp.errors');
+        $this->assertEquals($exceptionMessage, $logger->msg['message']);
+        $this->assertEquals($logger->msg['serviceContext'], ['service' => 'myapp']);
+    }
+}

compute/logging/test/mocks/FluentLogger.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Fluent\Logger;
+
+class FluentLogger
+{
+    public $prefix;
+    public $msg;
+
+    public function post($prefix, $msg)
+    {
+        $this->prefix = $prefix;
+        $this->msg = $msg;
+    }
+}