From 05b2c03cf3971303354b3a188fbbb0bbb8d554fc Mon Sep 17 00:00:00 2001
From: Daniel Narvaez <dwnarvaez@gmail.com>
Date: Thu, 29 Nov 2012 16:18:29 +0000
Subject: Make json configs a bit smarter

To get rid of the duplication in deps
---
(limited to 'devbot')

diff --git a/devbot/config.py b/devbot/config.py
index a264ccb..259c4f2 100644
--- a/devbot/config.py
+++ b/devbot/config.py
@@ -223,6 +223,15 @@ def load_prerequisites():
     path = os.path.join(config_dir, "deps", "prerequisites.json")
     return json.load(open(path))
 
+def _filter_if(item):
+    if "if" not in item:
+        return True
+
+    distro_info = distro.get_distro_info()
+    globals = { "gstreamer_version": distro_info.gstreamer_version }
+
+    return eval(item["if"], globals)
+
 def load_checks():
     version = distro.get_distro_info().system_version
 
@@ -231,7 +240,7 @@ def load_checks():
         path = os.path.join(config_dir, "deps", "%s.json" % file)
         checks.extend(json.load(open(path)))
 
-    return checks
+    return filter(_filter_if, checks)
 
 def load_modules():
     version = distro.get_distro_info().system_version
diff --git a/devbot/plugins/debian.py b/devbot/plugins/debian.py
index 8ba62b0..38d5be4 100644
--- a/devbot/plugins/debian.py
+++ b/devbot/plugins/debian.py
@@ -90,6 +90,7 @@ class DistroInfo(interfaces.DistroInfo):
         self.name = "debian"
         self.version = "unknown"
         self.system_version = "3.4"
+        self.gstreamer_version = "0.10"
         self.valid = True
         self.supported = (arch in ["i686", "x86_64"])
         self.use_lib64 = False
diff --git a/devbot/plugins/fedora.py b/devbot/plugins/fedora.py
index 083c479..3cfdfef 100644
--- a/devbot/plugins/fedora.py
+++ b/devbot/plugins/fedora.py
@@ -88,6 +88,7 @@ class DistroInfo(interfaces.DistroInfo):
         self.name = "fedora"
         self.version = "unknown"
         self.system_version = "3.6"
+        self.gstreamer_version = "1.0"
         self.use_lib64 = (arch == "x86_64")
         self.valid = True
         self.supported = (arch in ["i386", "i686", "x86_64"])
@@ -101,6 +102,7 @@ class DistroInfo(interfaces.DistroInfo):
         if release == "Fedora release 17 (Beefy Miracle)":
             self.version = "17"
             self.system_version = "3.4"
+            self.gstreamer_version = "0.10"
         elif release == "Fedora release 18 (Spherical Cow)":
             self.version = "18"
         else:
diff --git a/devbot/plugins/interfaces.py b/devbot/plugins/interfaces.py
index 0c9c0b6..c6db014 100644
--- a/devbot/plugins/interfaces.py
+++ b/devbot/plugins/interfaces.py
@@ -48,6 +48,9 @@ class DistroInfo:
            major version of GNOME installed on the system.
         """
 
+        self.gstreamer_version = None
+        """The version of gstreamer shipped with the distribution."""
+
         self.valid = False
         """If set to True we are running on this distribution and the
            attributes are all valid.
diff --git a/devbot/plugins/ubuntu.py b/devbot/plugins/ubuntu.py
index 4db0dd1..556aaab 100644
--- a/devbot/plugins/ubuntu.py
+++ b/devbot/plugins/ubuntu.py
@@ -13,6 +13,7 @@ class DistroInfo(interfaces.DistroInfo):
         self.name = "ubuntu"
         self.version = "unknown"
         self.system_version = "3.4"
+        self.gstreamer_version = "1.0"
         self.valid = True
         self.supported = (arch in ["i386", "i686", "x86_64"])
         self.use_lib64 = False
diff --git a/devbot/plugins/unknown.py b/devbot/plugins/unknown.py
index 826f643..f843fd5 100644
--- a/devbot/plugins/unknown.py
+++ b/devbot/plugins/unknown.py
@@ -32,6 +32,7 @@ class DistroInfo(interfaces.DistroInfo):
         self.name = "unknown"
         self.version = "unknown"
         self.system_version = "3.4"
+        self.gstreamer_version = "0.10"
         self.valid = True
         self.supported = False
  
diff --git a/devbot/system.py b/devbot/system.py
index 0bbfe8d..5757424 100644
--- a/devbot/system.py
+++ b/devbot/system.py
@@ -77,6 +77,17 @@ def _print_checks(checks):
     for check in checks:
         print "[%s] %s" % (check["checker"], check["check"])
 
+def _eval_check_if(check):
+    if "check_if" not in check:
+        return True
+
+    distro_info = distro.get_distro_info()
+    globals = { "distro": "%s-%s" % (distro_info.name, distro_info.version) }
+
+    print eval(check["check_if"], globals)
+
+    return eval(check["check_if"], globals) == "True"
+
 def run_checks(package_manager, checks, packages):
     distro_info = distro.get_distro_info()
 
@@ -85,6 +96,10 @@ def run_checks(package_manager, checks, packages):
     to_install = []
 
     for check in checks:
+        if not _eval_check_if(check):
+            print "uuuuu"
+            continue
+
         checker = checkers[check["checker"]]
         if checker(check["check"]):
             if distro_info.name in packages[check["name"]]:
--
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