From cbda6d2eb4b0a86d555f3ccca8987f9ae3bf09f0 Mon Sep 17 00:00:00 2001
From: hernani <hernani@0cfe37f9-358a-4d5e-be75-b63607b5c754>
Date: Sat, 29 May 2010 02:46:00 +0000
Subject: [PATCH] Initial implementation of a mangement command to check the
 the installation. Currently only checks dependencies, database connection and
 the APP_URL setting.

git-svn-id: http://svn.osqa.net/svnroot/osqa/trunk@342 0cfe37f9-358a-4d5e-be75-b63607b5c754
---
 forum/management/commands/checkinstall.py | 84 +++++++++++++++++++++++
 1 file changed, 84 insertions(+)
 create mode 100644 forum/management/commands/checkinstall.py

diff --git a/forum/management/commands/checkinstall.py b/forum/management/commands/checkinstall.py
new file mode 100644
index 0000000..efb0b19
--- /dev/null
+++ b/forum/management/commands/checkinstall.py
@@ -0,0 +1,84 @@
+import re
+import sys, traceback
+from django.core.management.base import NoArgsCommand
+
+OK_MESSAGE = "  Found %(what)s version %(version)s - OK"
+
+OLD_VERSION_ERROR = """  ERROR: Found %(what)s version %(version)s - you should upgrade it to at least %(minimum)s.
+                Package installers like apt-get or yum usually maintain old versions of libraries in the repositories."""
+
+NOT_FOUND_ERROR = "ERROR: %(what)s was not found on your system."
+
+HOW_TO_INSTALL = """  Try easy_install %(what)s or download it from %(where)s"""
+
+IMPORT_ERROR_MESSAGE = """Importing %(what)s is throwing an exception. Here's the full stack trace:"""
+
+class Command(NoArgsCommand):
+    def handle_noargs(self, **options):
+        print "Checking dependencies:"
+
+        try:
+            import html5lib
+            print "  Found html5lib - OK"
+        except ImportError:
+            print NOT_FOUND_ERROR % dict(what='html5lib')
+            print HOW_TO_INSTALL % dict(what='html5lib', where='http://code.google.com/p/html5lib/')
+        except Exception, e:
+            print IMPORT_ERROR_MESSAGE % dict(what='html5lib')
+            traceback.print_exc(file=sys.stdout)
+
+        try:
+            import markdown
+            version = int(re.findall('^\d+', markdown.version)[0])
+            if version < 2:
+                print OLD_VERSION_ERROR % dict(what='markdown', version=markdown.version, minimum='2.0')
+                print HOW_TO_INSTALL % dict(what='markdown', where='http://www.freewisdom.org/projects/python-markdown/')
+            else:
+                print OK_MESSAGE % dict(what='markdown', version=markdown.version)
+        except ImportError:
+            print NOT_FOUND_ERROR % dict(what='markdown')
+            print HOW_TO_INSTALL % dict(what='markdown', where='http://www.freewisdom.org/projects/python-markdown/')
+        except Exception, e:
+            print IMPORT_ERROR_MESSAGE % dict(what='markdown')
+            traceback.print_exc(file=sys.stdout)
+
+        try:
+            import south
+            version = re.findall('\d+', south.__version__)
+
+            if int(version[1]) < 6 and int(version[0]) == 0:
+                print OLD_VERSION_ERROR % dict(what='south', version=south.__version__, minimum='0.6')
+                print HOW_TO_INSTALL % dict(what='south', where='http://south.aeracode.org/')
+            else:
+                print OK_MESSAGE % dict(what='south', version=south.__version__)
+
+
+        except ImportError:
+            print NOT_FOUND_ERROR % dict(what='south')
+            print HOW_TO_INSTALL % dict(what='south', where='http://south.aeracode.org/')
+        except Exception, e:
+            print IMPORT_ERROR_MESSAGE % dict(what='south')
+            traceback.print_exc(file=sys.stdout)
+
+
+        print "\n\nChecking database connection:"
+
+        try:
+            from forum.models import User
+            User.objects.all().count()
+            print "  Connection OK"
+        except Exception, e:
+            print "There seems to be a problem with your database: %s" % str(e)
+
+
+
+        from django.conf import settings
+
+        print "\n\nChecking important settings:"
+
+        if not re.match('^https?:\/\/\w+', settings.APP_URL):
+            print " Your APP_URL does not seem to be a valid url. Please fill this setting with the URL of your OSQA installation"
+        else:
+            print " APP_URL - %s" % settings.APP_URL
+
+        
-- 
2.39.5