first commit

bootstrap

@@ -0,0 +1,60 @@
+#! /opt/bin/php -c /opt/etc/php.ini
+<?php
+
+// This invokes Composer's autoloader so that we'll be able to use Guzzle and any other 3rd party libraries we need.
+require __DIR__ . '/vendor/autoload.php';
+
+
+function getNextRequest()
+{
+    $client = new \GuzzleHttp\Client();
+    $response = $client->get('http://' . $_ENV['AWS_LAMBDA_RUNTIME_API'] . '/2018-06-01/runtime/invocation/next');
+
+    return [
+        'invocationId' => $response->getHeader('Lambda-Runtime-Aws-Request-Id')[0],
+        'payload' => json_decode((string)$response->getBody(), true)
+    ];
+}
+
+
+function sendResponse($invocationId, $response)
+{
+    $client = new \GuzzleHttp\Client();
+    $client->post(
+        'http://' . $_ENV['AWS_LAMBDA_RUNTIME_API'] . '/2018-06-01/runtime/invocation/' . $invocationId . '/response',
+        ['body' => $response]
+    );
+}
+
+
+function sendError($invocationId, $error)
+{
+    $client = new \GuzzleHttp\Client();
+    $client->post(
+        'http://' . $_ENV['AWS_LAMBDA_RUNTIME_API'] . '/2018-06-01/runtime/invocation/' . $invocationId . '/error',
+        ['body' => $error]
+    );
+}
+
+
+// This is the request processing loop. Barring unrecoverable failure, this loop runs until the environment shuts down.
+do {
+    // Ask the runtime API for a request to handle.
+    $request = getNextRequest();
+
+    try {
+        // Obtain the function name from the _HANDLER environment variable and ensure the function's code is available.
+        $handlerFunction = array_slice(explode('.', $_ENV['_HANDLER']), -1)[0];
+        require_once $_ENV['LAMBDA_TASK_ROOT'] . '/src/' . $handlerFunction . '.php';
+
+        // Execute the desired function and obtain the response.
+        $response = $handlerFunction($request['payload']);
+
+        // Submit the response back to the runtime API.
+        sendResponse($request['invocationId'], $response);
+
+    } catch (Throwable $e) {
+        sendError($request['invocationId'], (string)$e);
+    }
+} while (true);
+