Merge lp:~larryprice/libertine-scope/libertine-store-appstream into lp:~larryprice/libertine-scope/libertine-store-search

[Larry Price]

Appstream backend for libertine-service.

Appstream backend for libertine-service.

Requires version 0.9.7 > appstream > 0.10 as this bug needs to have been addressed: https://github.com/ximion/appstream/issues/63

[lp:~larryprice/libertine-scope/libertine-store-appstream]

97. By Larry Price on 2016-08-15

New AppStream syntax

98. By Larry Price on 2016-08-15

Fallback

99. By Larry Price on 2016-08-15

Fixing compile issue

100. By Larry Price on 2016-08-23

Largest versions of icons and screenshots

101. By Larry Price on 2016-08-25

appstream deps

102. By Larry Price on 2016-08-25

merge

103. By Larry Price on 2016-08-25

no more ratings

104. By Larry Price on 2016-08-26

merge

105. By Larry Price on 2016-08-26

add apt to install file

106. By Larry Price on 2016-08-31

merge

107. By Larry Price on 2016-09-01

Update app_info for official version of appstream 0.10

108. By Larry Price on 2016-09-15

merge

109. By Larry Price on 2016-09-15

Add back in liburl-dispatcher1-dev dep since we still use it in this mp

[Christopher Townsend (townsend)]

This works well and is good.

Let's go ahead and merge this in the base MP as well.

review: Approve

=== modified file 'debian/control'
--- debian/control	2016-08-31 14:49:27 +0000
+++ debian/control	2016-09-15 18:45:03 +0000
@@ -40,6 +40,8 @@
 Depends: python3-libertine,
          python3-apt (>= 0.9.3),
          python3-dbus (>= 1.2.0),
+         appstream,
+         gir1.2-appstream,
          ${python3:Depends}
 Description: Libertine packages scope for Unity
  The libertined package provides the d-bus service for finding and

=== modified file 'debian/libertined.install'
--- debian/libertined.install	2016-08-29 16:20:35 +0000
+++ debian/libertined.install	2016-09-15 18:45:03 +0000
@@ -1,5 +1,6 @@
 usr/share/dbus-1/services/com.canonical.libertine.ContainerManager.service
 usr/bin/libertined
 usr/lib/python*/*/libertine_service/__init__.py
+usr/lib/python*/*/libertine_service/appstream.py
 usr/lib/python*/*/libertine_service/apt.py
 usr/lib/python*/*/libertine_service/dbus.py

=== added file 'service/libertine_service/appstream.py'
--- service/libertine_service/appstream.py	1970-01-01 00:00:00 +0000
+++ service/libertine_service/appstream.py	2016-09-15 18:45:03 +0000
@@ -0,0 +1,79 @@
+# Copyright 2016 Canonical Ltd.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 3 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import gi
+gi.require_version('AppStream', '1.0')
+from gi.repository import AppStream
+
+
+def xstr(s):
+	"""Converts anything to a string"""
+	return str(s or "")
+
+
+class AppStreamCache(object):
+	"""AppStreamCache"""
+	def __init__(self, config):
+		super(AppStreamCache, self).__init__()
+		self.config = config
+		self.pool = AppStream.Pool()
+		self.pool.load()
+
+	def search(self, query):
+		packages = []
+		for component in self.pool.search(query):
+			if component.is_valid():
+				package = {}
+				package["name"] = xstr(component.get_name())
+				package["id"] = xstr(component.get_id())
+				package["summary"] = xstr(component.get_summary())
+				package["uri"] = xstr(component.get_url(AppStream.UrlKind.HOMEPAGE))
+
+				if len(component.get_icons()) > 0:
+					package["icon"] = xstr(self._get_largest_icon(component.get_icons()).get_filename())
+				packages.append(package)
+
+		return packages[::-1]
+
+	def app_info(self, app_id):
+		apps = self.pool.get_components_by_id(app_id)
+		app_data = {}
+		if len(apps) == 1 and apps[0].is_valid():
+			app = apps[0]
+			app_data["name"] = xstr(app.get_name())
+			app_data["id"] = xstr(app.get_id())
+			app_data["summary"] = xstr(app.get_summary())
+			app_data["website"] = xstr(app.get_url(AppStream.UrlKind.HOMEPAGE))
+			app_data["license"] = xstr(app.get_project_license())
+			for screenshot in app.get_screenshots():
+				if screenshot.is_valid() and screenshot.get_kind() is AppStream.ScreenshotKind.EXTRA:
+					largest = self._get_largest_icon(screenshot.get_images())
+					if largest is not None:
+						if "screenshots" not in app_data:
+							app_data["screenshots"] = []
+						app_data["screenshots"].append(largest.get_url())
+
+			app_data["description"] = xstr(app.get_description())
+
+			if len(app.get_icons()) > 0:
+				app_data["icon"] = xstr(self._get_largest_icon(app.get_icons()).get_filename())
+
+		return app_data
+
+	def _get_largest_icon(self, images):
+		largest = None
+		for icon in images:
+			if largest is None or icon.get_width() > largest.get_width():
+				largest = icon
+		return largest

=== modified file 'service/libertine_service/dbus.py'
--- service/libertine_service/dbus.py	2016-09-15 18:45:02 +0000
+++ service/libertine_service/dbus.py	2016-09-15 18:45:03 +0000
@@ -16,6 +16,7 @@
 import dbus.service
 import logging
 from libertine_service import apt
+from libertine_service import appstream
 from dbus.mainloop.glib import DBusGMainLoop
 
 
@@ -30,7 +31,6 @@
 
     def __init__(self, config):
         log.info("creating service")
-        self.cache = apt.AptCache(config)
         DBusGMainLoop(set_as_default=True)
         try:
             bus_name = dbus.service.BusName(LIBERTINE_SERVICE_NAME,
@@ -39,6 +39,13 @@
         except dbus.exceptions.NameExistsException:
             log.warning("service is already running")
             raise
+
+        try:
+            self.cache = appstream.AppStreamCache(config)
+        except:
+            log.warning("AppStream backend unavailable, falling back to Apt backend.")
+            self.cache = apt.AptCache(config)
+
         super().__init__(bus_name, LIBERTINE_STORE_PATH)
 
     @dbus.service.method(LIBERTINE_STORE_INTERFACE,