From d60306f8f8dfb850bcbdb5f0b17acfdacd3864e6 Mon Sep 17 00:00:00 2001
From: Marc Abramowitz <marc@marc-abramowitz.com>
Date: Mon, 2 Feb 2015 14:31:18 -0800
Subject: [PATCH] Retry opening output_file if it fails

Hoping that this fixes intermittent 500 errors due to inability to open
temp files, as seen in #28.
---
 lib/docverter-server/app.rb | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/lib/docverter-server/app.rb b/lib/docverter-server/app.rb
index b831142..2a225a2 100644
--- a/lib/docverter-server/app.rb
+++ b/lib/docverter-server/app.rb
@@ -40,10 +40,22 @@ class DocverterServer::App < Sinatra::Base
 
       content_type(DocverterServer::ConversionTypes.mime_type(manifest['to']))
 
+      num_tries = 0
+      max_retries = 10
       @output = nil
-      File.open(output_file) do |f|
-        @output = f.read
+
+      while num_tries < max_retries
+        begin
+          File.open(output_file) do |f|
+            @output = f.read
+          end
+          break
+        raise
+          puts "Failed to open #{output_file}"
+          sleep 0.020
+        end
       end
+
       @output
     end