set default timeout of check url promise to 20 seconds

Also allow to change promise timeout by editing check_url_PROMISE_TIMEOUT file

slapos/recipe/check_url_available/__init__.py

@@ -26,6 +26,7 @@
 ##############################################################################
 from slapos.recipe.librecipe import GenericBaseRecipe
 import sys
+import os
 
 class Recipe(GenericBaseRecipe):
   """
@@ -33,12 +34,14 @@ class Recipe(GenericBaseRecipe):
   """
 
   def install(self):
+    timeout_file = os.path.join(os.getcwd(), 'etc/check_url_PROMISE_TIMEOUT')
     config = {
       'url': self.options['url'],
       'shell_path': self.options['dash_path'],
       'curl_path': self.options['curl_path'],
       'check_secure': self.options.get('check-secure', 0),
       'http_code': self.options.get('http_code', '200'),
+      'time_out': self.options.get('timeout-file-path', timeout_file),
     }
 
     # XXX-Cedric in this script, curl won't check certificate

slapos/recipe/check_url_available/template/check_url.in

@@ -3,13 +3,24 @@
 # BEWARE: It will be overwritten automatically
 
 URL="%(url)s"
+F_TIMEOUT="%(time_out)s"
+TIMEOUT=20
 
 if [ -z "$URL" ]; then
   echo "No URL specified." >&2
   exit 3
 fi
 
-CODE=$(%(curl_path)s -g -k -sL $URL -w %%{http_code} --max-time 10 -o /dev/null)
+if [ -s "$F_TIMEOUT" ]; then
+  TIMEOUT=$(cat $F_TIMEOUT)
+  re="^[0-9]+$"
+  if ! [[ $TIMEOUT =~ $re ]]; then
+    # Not an integer
+    TIMEOUT=20
+  fi
+fi
+
+CODE=$(%(curl_path)s -g -k -sL $URL -w %%{http_code} --max-time $TIMEOUT -o /dev/null)
 
 if [ $? -eq 3 ]; then
   echo "URL malformed: $URL." >&2