Add version detection.

[wizard.git] / wizard / deploy.py

diff --git a/wizard/deploy.py b/wizard/deploy.py
index e591d36426ba46ecd288b6b636513cae56ea761b..89f8232c681d124be16859cf8cf67b9758e1f324 100644 (file)
--- a/wizard/deploy.py
+++ b/wizard/deploy.py
@@ -174,6 +174,17 @@ class Deployment(object):
         if not self.configured:
             raise NotConfiguredError(self.location)
 
+    def verifyVersion(self):
+        """
+        Checks if our version and the version number recorded in a file
+        are consistent.
+        """
+        real = self.application.detectVersion(self)
+        if not real:
+            raise VersionDetectionError
+        elif not str(real) == self.app_version.pristine_tag.partition('-')[2]:
+            raise VersionMismatchError(real, self.version)
+
     @property
     def configured(self):
         """Whether or not an autoinstall has been configured/installed for use."""
@@ -340,6 +351,11 @@ class Application(object):
         non-versioned data in an application.
         """
         raise NotImplemented
+    def detectVersion(self, deployment):
+        """
+        Checks source files to determine the version manually.
+        """
+        return None
     @property
     def extractors(self):
         """
@@ -582,6 +598,22 @@ ERROR: HEAD is not a descendant of %s.  This probably
 means that an upstream rebase occurred, and new tags were
 pulled, but local user commits were never rebased.""" % self.tag
 
+class VersionDetectionError(Error):
+    def __str__(self):
+        return """
+
+ERROR: Could not detect the real version of the application."""
+
+class VersionMismatchError(Error):
+    def __init__(self, real_version, git_version):
+        self.real_version = real_version
+        self.git_version = git_version
+    def __str__(self):
+        return """
+
+ERROR: The detected version %s did not match the Git
+version %s.""" % (self.real_version, self.git_version)
+
 _application_list = [
     "mediawiki", "wordpress", "joomla", "e107", "gallery2",
     "phpBB", "advancedbook", "phpical", "trac", "turbogears", "django",