]> scripts.mit.edu Git - wizard.git/blobdiff - wizard/deploy.py
Major updates to resolution code from runs.
[wizard.git] / wizard / deploy.py
index 8f976b986588332b44b645096590d8eb32d5d4dc..b4d21528310bc6bee43fdf2a2e733f7d5021463f 100644 (file)
@@ -10,22 +10,25 @@ import dateutil.parser
 import distutils.version
 import tempfile
 import logging
+import shutil
 
 import wizard
-from wizard import git, old_log, shell, util
+from wizard import git, old_log, scripts, shell, util
 
 ## -- Global Functions --
 
-def get_install_lines(versions_store):
+def get_install_lines(versions_store, user=None):
     """
     Low level function that retrieves a list of lines from the
     :term:`versions store` that can be passed to :meth:`Deployment.parse`.
     """
     if os.path.isfile(versions_store):
         return fileinput.input([versions_store])
+    if user:
+        return fileinput.input([versions_store + "/" + user])
     return fileinput.input([versions_store + "/" + f for f in sorted(os.listdir(versions_store))])
 
-def parse_install_lines(show, versions_store, yield_errors = False):
+def parse_install_lines(show, versions_store, yield_errors = False, user = None):
     """
     Generator function for iterating through all autoinstalls.
     Each item is an instance of :class:`Deployment`, or possibly
@@ -41,7 +44,7 @@ def parse_install_lines(show, versions_store, yield_errors = False):
         show = frozenset([show])
     else:
         show = frozenset(show)
-    for line in get_install_lines(versions_store):
+    for line in get_install_lines(versions_store, user):
         # construction
         try:
             d = Deployment.parse(line)
@@ -105,6 +108,27 @@ class Deployment(object):
         as such dir will generally not equal :attr:`location`.
         """
         return self.application.parametrize(self, dir)
+    def upgrade(self, version, options):
+        """
+        Performs an upgrae of database schemas and other non-versioned data.
+        """
+        with util.ChangeDirectory(self.location):
+            return self.application.upgrade(self, version, options)
+    def backup(self, options):
+        """
+        Performs a backup of database schemas and other non-versioned data.
+        """
+        with util.ChangeDirectory(self.location):
+            return self.application.backup(self, options)
+    def restore(self, backup, options):
+        """
+        Restores a backup. Destroys state, so be careful! Also, this does
+        NOT restore the file-level backup, which is what 'wizard restore'
+        does, so you probably do NOT want to call this elsewhere unless
+        you know what you're doing.
+        """
+        with util.ChangeDirectory(self.location):
+            return self.application.restore(self, backup, options)
     def prepareConfig(self):
         """
         Edits files in the deployment such that any user-specific configuration
@@ -190,6 +214,24 @@ class Deployment(object):
         elif not str(real) == self.app_version.pristine_tag.partition('-')[2]:
             raise VersionMismatchError(real, self.version)
 
+    def verifyWeb(self):
+        """
+        Checks if the autoinstall is viewable from the web.
+        """
+        out = []
+        if not self.application.checkWeb(self, out):
+            raise WebVerificationError(out[0])
+
+    def fetch(self, path, post=None):
+        """
+        Performs a HTTP request on the website.
+        """
+        try:
+            host, basepath = scripts.get_web_host_and_path(self.location)
+        except (ValueError, TypeError):
+            raise UnknownWebPath
+        return util.fetch(host, basepath, path, post)
+
     @property
     def configured(self):
         """Whether or not an autoinstall has been configured/installed for use."""
@@ -329,9 +371,24 @@ class Application(object):
             for key, value in variables.items():
                 if value is None: continue
                 contents = contents.replace(key, value)
-            tmp = tempfile.NamedTemporaryFile(delete=False)
-            tmp.write(contents)
-            os.rename(tmp.name, fullpath)
+            f = open(fullpath, "w")
+            f.write(contents)
+    def resolveConflicts(self, dir):
+        """
+        Takes a directory with conflicted files and attempts to
+        resolve them.  Returns whether or not all conflicted
+        files were resolved or not.  Fully resolved files are
+        added to the index, but no commit is made.
+        """
+        return False
+    def prepareMerge(self, dir):
+        """
+        Takes a directory and performs various edits to files in
+        order to make a merge go more smoothly.  This is usually
+        used to fix botched line-endings.  If you add new files,
+        you have to 'git add' them; this is not necessary for edits.
+        """
+        pass
     def prepareConfig(self, deployment):
         """
         Takes a deployment and replaces any explicit instances
@@ -344,16 +401,32 @@ class Application(object):
             subs = subst(deployment)
             if not subs and key not in self.deprecated_keys:
                 logging.warning("No substitutions for %s" % key)
-    def install(self, options):
+    def install(self, version, options):
         """
         Run for 'wizard configure' (and, by proxy, 'wizard install')
-        to configure an application.
+        to configure an application.  This assumes that the current
+        working directory is a deployment.
         """
         raise NotImplemented
-    def upgrade(self, options):
+    def upgrade(self, deployment, version, options):
         """
         Run for 'wizard upgrade' to upgrade database schemas and other
-        non-versioned data in an application.
+        non-versioned data in an application.  This assumes that
+        the current working directory is the deployment.
+        """
+        raise NotImplemented
+    def backup(self, deployment, options):
+        """
+        Run for 'wizard backup' and upgrades to backup database schemas
+        and other non-versioned data in an application.  This assumes
+        that the current working directory is the deployment.
+        """
+        raise NotImplemented
+    def restore(self, deployment, backup, options):
+        """
+        Run for 'wizard restore' and failed upgrades to restore database
+        and other non-versioned data to a backed up version.  This assumes
+        that the current working directory is the deployment.
         """
         raise NotImplemented
     def detectVersion(self, deployment):
@@ -361,6 +434,12 @@ class Application(object):
         Checks source files to determine the version manually.
         """
         return None
+    def checkWeb(self, deployment, output=None):
+        """
+        Checks if the autoinstall is viewable from the web.  Output
+        should be an empty list that will get mutated by this function.
+        """
+        raise NotImplemented
     @property
     def extractors(self):
         """
@@ -654,6 +733,33 @@ class VersionMismatchError(Error):
 ERROR: The detected version %s did not match the Git
 version %s.""" % (self.real_version, self.git_version)
 
+class WebVerificationError(Error):
+    """Could not access the application on the web"""
+    #: Contents of web page access
+    contents = None
+    def __init__(self, contents):
+        self.contents = contents
+    def __str__(self):
+        return """
+
+ERROR: We were not able to access the application on the
+web.  This may indicate that the website is behind
+authentication on the htaccess level.  The contents
+of the page were:
+
+%s""" % self.contents
+
+class UnknownWebPath(Error):
+    """Could not determine application's web path."""
+    def __str__(self):
+        return """
+
+ERROR: We were not able to determine what the application's
+host and path were in order to perform a web request
+on the application.  You can specify this manually using
+the WIZARD_WEB_HOST and WIZARD_WEB_PATH environment
+variables."""
+
 _application_list = [
     "mediawiki", "wordpress", "joomla", "e107", "gallery2",
     "phpBB", "advancedbook", "phpical", "trac", "turbogears", "django",