check_parameter: Add a new promise checker

This checks if a certain parameter is the write one, normally it is required to know
if the value is not published but not yet ready.

setup.py

@@ -87,6 +87,7 @@ setup(name=name,
           'check_page_content = slapos.recipe.check_page_content:Recipe',
           'check_port_listening = slapos.recipe.check_port_listening:Recipe',
           'check_url_available = slapos.recipe.check_url_available:Recipe',
+          'check_parameter = slapos.recipe.check_parameter:Recipe',
           'cloud9 = slapos.recipe.cloud9:Recipe',
           'cloudooo.test = slapos.recipe.erp5_test:CloudoooRecipe',
           'condor = slapos.recipe.condor:Recipe',

slapos/recipe/check_parameter/__init__.py

+# vim: set et sts=2:
+##############################################################################
+#
+# Copyright (c) 2015 Vifib SARL and Contributors. All Rights Reserved.
+#
+# WARNING: This program as such is intended to be used by professional
+# programmers who take the whole responsibility of assessing all potential
+# consequences resulting from its eventual inadequacies and bugs
+# End users who are looking for a ready-to-use solution with commercial
+# guarantees and support are strongly adviced to contract a Free Software
+# Service Company
+#
+# This program is Free Software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 3
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#
+##############################################################################
+from slapos.recipe.librecipe import GenericBaseRecipe
+import sys
+
+class Recipe(GenericBaseRecipe):
+  """
+  Check listening port promise
+  """
+
+  def install(self):
+    config = dict(
+      value=self.options['value'],
+      python_path=sys.executable,
+    )
+
+    if self.options.get('expected-type') == "ipv6":
+      template = self.getTemplateFilename('check_ipv6.py.in')
+
+    elif self.options.get('expected-type') == "ipv4":
+      template = self.getTemplateFilename('check_ipv4.py.in')
+    else:
+      if self.options.get('expected-value'):
+        config["expected-value"] = self.options.get('expected-value')
+ 
+     if self.options.get('expected-not-value'):
+        config["expected-not-value"] = self.options.get('expected-not-value')
+
+      template = self.getTemplateFilename('check_parameter.py.in')
+
+    promise = self.createExecutable(
+      self.options['path'],
+      self.substituteTemplate(template, config))
+
+    return [promise]

slapos/recipe/check_parameter/template/check_ipv4.py.in

+#!%(python_path)s
+# BEWARE: This file is operated by slapgrid
+# BEWARE: It will be overwritten automatically
+import socket
+
+address = "%(value)s"
+
+try:
+  socket.inet_pton(socket.AF_INET, address)
+except AttributeError:  # no inet_pton here, sorry
+  try:
+    socket.inet_aton(address)
+  except socket.error:
+    sys.exit(127)
+  if address.count('.') != 3:
+    sys.exit(127)
+
+except socket.error:  # not a valid address
+   sys.exit(127)

slapos/recipe/check_parameter/template/check_ipv6.py.in

+#!%(python_path)s
+# BEWARE: This file is operated by slapgrid
+# BEWARE: It will be overwritten automatically
+import socket
+import sys
+
+address = "%(value)s"
+
+try:
+  socket.inet_pton(socket.AF_INET6, address)
+except socket.error:  # not a valid address
+  sys.exit(127)

slapos/recipe/check_parameter/template/check_parameter.py.in

+#!%(python_path)s
+# BEWARE: This file is operated by slapgrid
+# BEWARE: It will be overwritten automatically
+import socket
+import sys
+
+value = "%(value)s"
+expected = "%(expected-value)s"
+not_expected = "%(expected-not-value)s"
+
+if expected != "" and value != expected:
+  print "FAIL: %s != %s" % (value, expected)
+  sys.exit(127)
+
+if not_expected != "" and value == not_expected: 
+  print "FAIL: %s == %s" % (value, not_expected)
+  sys.exit(127)
+