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app.php
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app.php
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<?php
/**
* Copyright 2017 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.
*/
use Psr\Http\Message\ServerRequestInterface as Request;
use Psr\Http\Message\ResponseInterface as Response;
use Slim\Factory\AppFactory;
# [START gae_flex_metadata]
function get_external_ip_using_google_cloud()
{
$metadata = new Google\Cloud\Core\Compute\Metadata();
$externalIp = $metadata->get(
'instance/network-interfaces/0/access-configs/0/external-ip');
return $externalIp;
}
function get_external_ip_using_curl()
{
$url = 'http://metadata.google.internal/computeMetadata/v1/' .
'instance/network-interfaces/0/access-configs/0/external-ip';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Metadata-Flavor: Google'));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
return curl_exec($ch);
}
# [END gae_flex_metadata]
// Create App
$app = AppFactory::create();
// Display errors
$app->addErrorMiddleware(true, true, true);
$app->get('/', function (Request $request, Response $response) {
if (!$externalIp = get_external_ip_using_google_cloud()) {
return 'Unable to reach Metadata server - are you running locally?';
}
$response->getBody()->write(sprintf('External IP: %s', $externalIp));
return $response;
});
$app->get('/curl', function (Request $request, Response $response) {
if (!$externalIp = get_external_ip_using_curl()) {
return 'Unable to reach Metadata server - are you running locally?';
}
$response->getBody()->write(sprintf('External IP: %s', $externalIp));
return $response;
});
return $app;