lib/oe/manifest.py: add library for image manifest creation

This new library allows for the creation of 2 types of manifests:
 * initial manifest - used by the new rootfs creation routines to
   generate the rootfs;
 * final_manifest - this will contain all the packages in the image,
   after all installations finished;

Usage:
  Manifest(d, manifest_dir).create_initial()
  Manifest(d, manifest_dir).create_final()
or using the provided wrapper function:
  create_manifest(d, False, manifest_dir) -> creates initial manifest
  create_manifest(d, True, manifest_dir) -> creates final manifest

If manifest_dir argument is ommited, it defaults to ${WORKDIR}.

NOTE: this commit creates fixed manifests for minimal/sato/sato-sdk
images, for Rpm & Opkg backends, in order to help speed up
development of rootfs refactoring. Dpkg initial manifest creation is
implemented.

Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>

1 files changed, 165 insertions, 0 deletions

diff --git a/meta/lib/oe/manifest.py b/meta/lib/oe/manifest.py
new file mode 100644
index 0000000000..5d01022c36
--- /dev/null
+++ b/meta/lib/oe/manifest.py
@@ -0,0 +1,165 @@
+from abc import ABCMeta, abstractmethod
+import os
+import re
+
+
+class Manifest(object):
+    """
+    This is an abstract class. Do not instantiate this directly.
+    """
+    __metaclass__ = ABCMeta
+
+    initial_manifest_file_header = \
+        "# This file was generated automatically and contains the packages\n" \
+        "# passed on to the package manager in order to create the rootfs.\n\n" \
+        "# Format:\n" \
+        "#  <package_type>,<package_name>\n" \
+        "# where:\n" \
+        "#   <package_type> can be:\n" \
+        "#      'mip' = must install package\n" \
+        "#      'aop' = attempt only package\n" \
+        "#      'mlp' = multilib package\n" \
+        "#      'lgp' = language package\n\n"
+
+    def __init__(self, d, manifest_dir=None):
+        self.d = d
+        self.image_rootfs = d.getVar('IMAGE_ROOTFS', True)
+
+        if manifest_dir is None:
+            self.manifest_dir = self.d.getVar('WORKDIR', True)
+        else:
+            self.manifest_dir = manifest_dir
+
+        self.initial_manifest = os.path.join(self.manifest_dir, "initial_manifest")
+        self.final_manifest = os.path.join(self.manifest_dir, "final_manifest")
+
+    """
+    This creates a standard initial manifest for core-image-(minimal|sato|sato-sdk).
+    This will be used for testing until the class is implemented properly!
+    """
+    def _create_dummy_initial(self):
+        pkg_list = dict()
+        if self.image_rootfs.find("core-image-sato-sdk") > 0:
+            pkg_list['mip'] = \
+                "packagegroup-core-x11-sato-games packagegroup-base-extended " \
+                "packagegroup-core-x11-sato packagegroup-core-x11-base " \
+                "packagegroup-core-sdk packagegroup-core-tools-debug " \
+                "packagegroup-core-boot packagegroup-core-tools-testapps " \
+                "packagegroup-core-eclipse-debug packagegroup-core-qt-demoapps " \
+                "apt packagegroup-core-tools-profile psplash " \
+                "packagegroup-core-standalone-sdk-target " \
+                "packagegroup-core-ssh-openssh dpkg kernel-dev"
+            pkg_list['lgp'] = \
+                "locale-base-en-us locale-base-en-gb"
+        elif self.image_rootfs.find("core-image-sato") > 0:
+            pkg_list['mip'] = \
+                "packagegroup-core-ssh-dropbear packagegroup-core-x11-sato-games " \
+                "packagegroup-core-x11-base psplash apt dpkg packagegroup-base-extended " \
+                "packagegroup-core-x11-sato packagegroup-core-boot"
+            pkg_list['lgp'] = \
+                "locale-base-en-us locale-base-en-gb"
+        elif self.image_rootfs.find("core-image-minimal") > 0:
+            pkg_list['mip'] = "run-postinsts packagegroup-core-boot"
+
+        with open(self.initial_manifest, "w+") as manifest:
+            manifest.write(self.initial_manifest_file_header)
+
+            for pkg_type in pkg_list:
+                for pkg in pkg_list[pkg_type].split():
+                    manifest.write("%s,%s\n" % (pkg_type, pkg))
+
+    """
+    This will create the initial manifest which will be used by Rootfs class to
+    generate the rootfs
+    """
+    @abstractmethod
+    def create_initial(self):
+        pass
+
+    """
+    This creates the manifest after everything has been installed.
+    """
+    @abstractmethod
+    def create_final(self):
+        pass
+
+    """
+    The following function parses an initial manifest and returns a dictionary
+    object with the must install, attempt only, multilib and language packages.
+    """
+    def parse_initial_manifest(self):
+        pkgs = dict()
+
+        with open(self.initial_manifest) as manifest:
+            for line in manifest.read().split('\n'):
+                comment = re.match("^#.*", line)
+                pkg = re.match("^(mip|aop|mlp|lgp),(.*)$", line)
+
+                if comment is not None:
+                    continue
+
+                if pkg is not None:
+                    pkg_type = pkg.group(1)
+                    pkg_name = pkg.group(2)
+
+                    if not pkg_type in pkgs:
+                        pkgs[pkg_type] = [pkg_name]
+                    else:
+                        pkgs[pkg_type].append(pkg_name)
+
+        return pkgs
+
+
+class RpmManifest(Manifest):
+    def create_initial(self):
+        self._create_dummy_initial()
+
+    def create_final(self):
+        pass
+
+
+class OpkgManifest(Manifest):
+    def create_initial(self):
+        self._create_dummy_initial()
+
+    def create_final(self):
+        pass
+
+
+class DpkgManifest(Manifest):
+    def create_initial(self):
+        var_map = {"PACKAGE_INSTALL": "mip",
+                   "PACKAGE_INSTALL_ATTEMPTONLY": "aop",
+                   "LINGUAS_INSTALL": "lgp"}
+
+        with open(self.initial_manifest, "w+") as manifest:
+            manifest.write(self.initial_manifest_file_header)
+
+            for var in var_map:
+                pkg_list = self.d.getVar(var, True)
+
+                if pkg_list is None:
+                    continue
+
+                for pkg in pkg_list.split():
+                    manifest.write("%s,%s\n" % (var_map[var], pkg))
+
+    def create_final(self):
+        pass
+
+
+def create_manifest(d, final_manifest=False, manifest_dir=None):
+    manifest_map = {'rpm': RpmManifest,
+                    'ipk': OpkgManifest,
+                    'deb': DpkgManifest}
+
+    manifest = manifest_map[d.getVar('IMAGE_PKGTYPE', True)](d, manifest_dir)
+
+    if final_manifest:
+        manifest.create_final()
+    else:
+        manifest.create_initial()
+
+
+if __name__ == "__main__":
+    pass