2 files changed, 66 insertions, 0 deletions
diff --git a/lib/Server/InvalidUsage/__init__.py b/lib/Server/InvalidUsage/__init__.py
new file mode 100644
index 0000000..e5616d4
--- /dev/null
+++ b/lib/Server/InvalidUsage/__init__.py
@@ -0,0 +1,16 @@
+from flask import jsonify
+
+class InvalidUsage(Exception):
+    status_code = 400
+
+    def __init__(self, message, status_code=None, payload=None):
+        Exception.__init__(self)
+        self.message = message
+        if status_code is not None:
+            self.status_code = status_code
+        self.payload = payload
+
+    def to_dict(self):
+        rv = dict(self.payload or ())
+        rv['message'] = self.message
+        return rv
diff --git a/lib/Server/__init__.py b/lib/Server/__init__.py
new file mode 100644
index 0000000..c3688c2
--- /dev/null
+++ b/lib/Server/__init__.py
@@ -0,0 +1,50 @@
+from flask import Flask
+from flask import abort, redirect, url_for
+import sys, os
+sys.path.append("./lib")
+from Pb import *
+from Server.InvalidUsage import InvalidUsage
+
+class Server(object):
+  def __init__(self):
+    self.app = Flask(__name__)
+    @self.app.route('/im/pb/<pb_classname>', methods=['POST'])
+    def pb():
+      self._response_post(pb_classname, request)
+
+    @self.app.errorhandler(InvalidUsage)
+    def handle_invalid_usage(error):
+        response = jsonify(error.to_dict())
+        response.status_code = error.status_code
+        return response
+
+    self._classname_aliases = {
+      'generate' : 'PbGenerate', 
+      'imgrid' : 'PbGrid',
+    }
+  def _find_class_by_name(self, pb_classname):
+    pb_classname = self._classname_aliases.get(pb_classname, None) or pb_classname
+    try:
+      filter(lambda c: c.__name__ == pb_classname, Pb.__subclasses__())[0]
+    except IndexError:
+      raise InvalidUsage('No such api', status_code=410)
+
+  def _response_post(self, pb_classname, request):
+    pb_class = self._find_class_by_name(pb_classname)
+    classnames = map(lambda c: c.__name__, Pb.__subclasses__())
+    try:
+        im = pb_class(**(dict(request.forms)))
+        im.create();
+        return im.file_json();
+    #FIXME handle BadParamsError and PbError separately
+    except Exception as e:
+        sys.stderr.write("%s failure" % pb_class.__name__)
+        sys.stderr.write("params:\n")
+        for i in request.forms:
+            sys.stderr.write("{}:{}\n".format(i, request.forms[i]))
+        raise;
+        return json.dumps({ 'error' : 'Request could not be processed' })
+
+  def run(self):
+    self.app.run()
+