Example service

services/TransactionService/.gitignore

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+composer.lock
+composer.phar
+vendor

services/TransactionService/composer.json

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+{
+    "name": "islandora/transaction-service",
+    "description": "RESTful service providing transactions in Fedora 4",
+    "require": {
+        "islandora/chullo": "^0.0.1",
+        "silex/silex": "^1.3"
+    },
+    "autoload": {
+        "psr-4": {"Islandora\\TransactionService\\": "src/"}
+    },
+    "authors": [
+        {
+            "name": "Daniel Lamb",
+            "email": "daniel@discoverygarden.ca"
+        }
+    ]
+}

services/TransactionService/src/index.php

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+<?php
+
+namespace Islandora\TransactionService;
+
+require_once __DIR__.'/../vendor/autoload.php';
+
+use GuzzleHttp\Client;
+use GuzzleHttp\Exception\ClientException;
+use Islandora\Chullo\Chullo;
+use Silex\Application;
+use Symfony\Component\HttpFoundation\Response;
+
+date_default_timezone_set('UTC');
+
+$app = new Application();
+
+$app['debug'] = true;
+
+$app['fedora'] = function () use ($app) {
+    $client = new Client(['base_uri' => 'http://127.0.0.1:8080/fcrepo/rest']);
+    return new Chullo($client);
+};
+
+$app->post(
+    "/islandora/transaction",
+    function (Application $app) {
+        try {
+            return new Response($app['fedora']->createTransaction(), 201);
+        }
+        catch (ClientException $e) {
+            $response = $e->getResponse();
+            $app->abort($response->getStatusCode(), $response->getReasonPhrase());
+        }
+    }
+);
+
+$app->post(
+    "/islandora/transaction/{id}/extend",
+    function (Application $app, $id) {
+        try {
+            $app['fedora']->extendTransaction($id);
+            return new Response("", 204);
+        }
+        catch (ClientException $e) {
+            $response = $e->getResponse();
+            $app->abort($response->getStatusCode(), $response->getReasonPhrase());
+        }
+    }
+);
+
+$app->post(
+    "/islandora/transaction/{id}/commit",
+    function (Application $app, $id) {
+        try {
+            $app['fedora']->commitTransaction($id);
+            return new Response("", 204);
+        }
+        catch (ClientException $e) {
+            $response = $e->getResponse();
+            $app->abort($response->getStatusCode(), $response->getReasonPhrase());
+        }
+    }
+);
+
+$app->post(
+    "/islandora/transaction/{id}/rollback",
+    function (Application $app, $id) {
+        try {
+            return $app['fedora']->rollbackTransaction($id);
+            return new Response("", 204);
+        }
+        catch (ClientException $e) {
+            $response = $e->getResponse();
+            $app->abort($response->getStatusCode(), $response->getReasonPhrase());
+        }
+    }
+);
+
+$app->run();