gitclone: add depth option

slapos/recipe/gitclone.py

@@ -134,7 +134,7 @@ class Recipe(object):
     options.setdefault('location',
         os.path.join(buildout['buildout']['parts-directory'], name))
     self.name = name
-    for option in ('branch', 'revision', 'location', 'repository'):
+    for option in ('branch', 'revision', 'location', 'repository', 'depth'):
       value = options.get(option, '').strip()
       if value == '':
         setattr(self, option, None)
@@ -172,6 +172,14 @@ class Recipe(object):
       command.append(revision)
     check_call(command, cwd=self.location)
 
+  def gitSubmoduleUpdate(self):
+    """Updates submodules recursively."""
+    command = [self.git_command, 'submodule', 'update', '--init',
+               '--force', '--recursive']
+    if self.depth != None:
+      command += '--depth', self.depth
+    check_call(command, cwd=self.location)
+
   def install(self):
     """
     Do a git clone.
@@ -208,6 +216,8 @@ class Recipe(object):
       config.append('core.sparseCheckout=true')
     if self.branch:
       git_clone_command += '--branch', self.branch
+    if self.depth != None:
+      git_clone_command += '--depth', self.depth
     if self.ignore_ssl_certificate:
       config.append('http.sslVerify=false')
 
@@ -240,8 +250,7 @@ class Recipe(object):
       if not self.ignore_cloning_submodules:
         # Update submodule repository to the commit which is being pointed to
         # in main repo
-        check_call([self.git_command, 'submodule', 'update', '--init',
-                    '--recursive'], cwd=self.location)
+        self.gitSubmoduleUpdate()
     except CalledProcessError:
       print("Unable to download from git repository."
             " Trying from network cache...")
@@ -285,7 +294,10 @@ class Recipe(object):
     self.deletePycFiles(self.location)
 
     # Fetch and reset to the upstream
-    check_call([self.git_command, 'fetch', '--all'], cwd=self.location)
+    update_commend = [self.git_command, 'fetch', '--all']
+    if self.depth != None:
+      update_command += '--depth', self.depth
+    check_call(update_command, cwd=self.location)
     self.gitReset('@{upstream}')
 
     if not self.ignore_cloning_submodules:
@@ -297,8 +309,7 @@ class Recipe(object):
       # repo being checked out to the desired one.
       # It will also init a submodule if required
       # NOTE: This will put the submodule repo in a `Detached` state.
-      check_call([self.git_command, 'submodule', 'update', '--init', '-f',
-                  '--recursive'], cwd=self.location)
+      self.gitSubmoduleUpdate()
 
 def uninstall(name, options):
   """Keep the working copy, unless develop is set to false.