1 files changed, 102 insertions, 0 deletions

diff --git a/meta/lib/bblayers/makesetup.py b/meta/lib/bblayers/makesetup.py
new file mode 100644
index 0000000000..99d5973760
--- /dev/null
+++ b/meta/lib/bblayers/makesetup.py
@@ -0,0 +1,102 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: GPL-2.0-only
+#
+
+import logging
+import os
+import sys
+
+import bb.utils
+
+from bblayers.common import LayerPlugin
+
+logger = logging.getLogger('bitbake-layers')
+
+sys.path.insert(0, os.path.dirname(os.path.dirname(__file__)))
+
+import oe.buildcfg
+
+def plugin_init(plugins):
+    return MakeSetupPlugin()
+
+class MakeSetupPlugin(LayerPlugin):
+
+    def _get_remotes_with_url(self, repo_path):
+        remotes = {}
+        for r in oe.buildcfg.get_metadata_git_remotes(repo_path):
+            remotes[r] = {'uri':oe.buildcfg.get_metadata_git_remote_url(repo_path, r)}
+        return remotes
+
+    def _is_submodule(self, repo_path):
+        # This is slightly brittle: git does not offer a way to tell whether
+        # a given repo dir is a submodule checkout, so we need to rely on .git
+        # being a file (rather than a dir like it is in standalone checkouts).
+        # The file typically contains a gitdir pointer to elsewhere.
+        return os.path.isfile(os.path.join(repo_path,".git"))
+
+    def make_repo_config(self, destdir):
+        """ This is a helper function for the writer plugins that discovers currently configured layers.
+        The writers do not have to use it, but it can save a bit of work and avoid duplicated code, hence it is
+        available here. """
+        repos = {}
+        layers = oe.buildcfg.get_layer_revisions(self.tinfoil.config_data)
+        destdir_repo = oe.buildcfg.get_metadata_git_toplevel(destdir)
+
+        for (l_path, l_name, l_branch, l_rev, l_ismodified) in layers:
+            if l_name == 'workspace':
+                continue
+            if l_ismodified:
+                logger.error("Layer {name} in {path} has uncommitted modifications or is not in a git repository.".format(name=l_name,path=l_path))
+                return
+            repo_path = oe.buildcfg.get_metadata_git_toplevel(l_path)
+
+            if self._is_submodule(repo_path):
+                continue
+            if repo_path not in repos.keys():
+                repos[repo_path] = {'path':os.path.basename(repo_path),'git-remote':{
+                        'rev':l_rev,
+                        'branch':l_branch,
+                        'remotes':self._get_remotes_with_url(repo_path),
+                        'describe':oe.buildcfg.get_metadata_git_describe(repo_path)}}
+                if repo_path == destdir_repo:
+                    repos[repo_path]['contains_this_file'] = True
+                if not repos[repo_path]['git-remote']['remotes'] and not repos[repo_path]['contains_this_file']:
+                    logger.error("Layer repository in {path} does not have any remotes configured. Please add at least one with 'git remote add'.".format(path=repo_path))
+                    return
+
+        top_path = os.path.commonpath([os.path.dirname(r) for r in repos.keys()])
+
+        repos_nopaths = {}
+        for r in repos.keys():
+            r_nopath = os.path.basename(r)
+            repos_nopaths[r_nopath] = repos[r]
+            r_relpath = os.path.relpath(r, top_path)
+            repos_nopaths[r_nopath]['path'] = r_relpath
+        return repos_nopaths
+
+    def do_make_setup(self, args):
+        """ Writes out a configuration file and/or a script that replicate the directory structure and revisions of the layers in a current build. """
+        for p in self.plugins:
+            if str(p) == args.writer:
+                p.do_write(self, args)
+
+    def register_commands(self, sp):
+        parser_setup_layers = self.add_command(sp, 'create-layers-setup', self.do_make_setup, parserecipes=False)
+        parser_setup_layers.add_argument('destdir',
+            help='Directory where to write the output\n(if it is inside one of the layers, the layer becomes a bootstrap repository and thus will be excluded from fetching).')
+        parser_setup_layers.add_argument('--output-prefix', '-o',
+            help='File name prefix for the output files, if the default (setup-layers) is undesirable.')
+
+        self.plugins = []
+
+        for path in (self.tinfoil.config_data.getVar('BBPATH').split(':')):
+            pluginpath = os.path.join(path, 'lib', 'bblayers', 'setupwriters')
+            bb.utils.load_plugins(logger, self.plugins, pluginpath)
+
+        parser_setup_layers.add_argument('--writer', '-w', choices=[str(p) for p in self.plugins], help="Choose the output format (defaults to oe-setup-layers).\n\nCurrently supported options are:\noe-setup-layers - a self-contained python script and a json config for it.\n\n", default="oe-setup-layers")
+
+        for plugin in self.plugins:
+            if hasattr(plugin, 'register_arguments'):
+                plugin.register_arguments(parser_setup_layers)