Add a component that tracks global requirements

There is a separate repository that stores the whole set of
package requrements of various OpenStack components. So it
makes sense to add such component-helper to anvil.

Change-Id: Id32af1262c881c1bf5e0cbe4f13ce543b95747c9

anvil/components/base.py

@@ -16,10 +16,14 @@
 
 from anvil import exceptions as excp
 from anvil import log as logging
+from anvil import patcher
+from anvil import settings
 from anvil import shell as sh
+from anvil import trace as tr
 from anvil import type_utils as tu
 from anvil import utils
 
+from anvil.components.configurators import base as conf
 
 LOG = logging.getLogger(__name__)
 
@@ -124,3 +128,35 @@ class Component(object):
             except KeyError:
                 names.add("openstack-%s-%s" % (self.name, key))
         return names
+
+
+class BasicComponent(Component):
+    def __init__(self, *args, **kargs):
+        super(BasicComponent, self).__init__(*args, **kargs)
+        trace_fn = tr.trace_filename(self.get_option('trace_dir'), 'created')
+        self.tracewriter = tr.TraceWriter(trace_fn, break_if_there=False)
+        self.configurator = conf.Configurator(self)
+
+    def download(self):
+        return []
+
+    def list_patches(self, section):
+        what_patches = self.get_option('patches', section)
+        if not what_patches:
+            what_patches = [sh.joinpths(settings.CONFIG_DIR, 'patches',
+                                        self.name, section)]
+        canon_what_patches = []
+        for path in what_patches:
+            if sh.isdir(path):
+                patches = sorted(fn for fn in sh.listdir(path, files_only=True)
+                                 if fn.endswith('patch'))
+                canon_what_patches.extend(patches)
+            elif sh.isfile(path):
+                canon_what_patches.append(path)
+        return canon_what_patches
+
+    def patch(self, section):
+        canon_what_patches = self.list_patches(section)
+        if canon_what_patches:
+            target_dir = self.get_option('app_dir')
+            patcher.apply_patches(canon_what_patches, target_dir)

anvil/components/base_install.py

@@ -15,70 +15,16 @@
 from anvil.components import base
 from anvil import downloader as down
 from anvil import log as logging
-from anvil import patcher
-from anvil import settings
 from anvil import shell as sh
 from anvil import trace as tr
 from anvil import utils
 
 from anvil.packaging.helpers import pip_helper
 
-from anvil.components.configurators import base as conf
-
 LOG = logging.getLogger(__name__)
 
 
-class PkgInstallComponent(base.Component):
-    def __init__(self, *args, **kargs):
-        super(PkgInstallComponent, self).__init__(*args, **kargs)
-        trace_fn = tr.trace_filename(self.get_option('trace_dir'), 'created')
-        self.tracewriter = tr.TraceWriter(trace_fn, break_if_there=False)
-        self.configurator = conf.Configurator(self)
-
-    def download(self):
-        return []
-
-    def list_patches(self, section):
-        what_patches = self.get_option('patches', section)
-        if not what_patches:
-            what_patches = [sh.joinpths(settings.CONFIG_DIR, 'patches',
-                                        self.name, section)]
-        canon_what_patches = []
-        for path in what_patches:
-            if sh.isdir(path):
-                patches = sorted(fn for fn in sh.listdir(path, files_only=True)
-                                 if fn.endswith('patch'))
-                canon_what_patches.extend(patches)
-            elif sh.isfile(path):
-                canon_what_patches.append(path)
-        return canon_what_patches
-
-    def patch(self, section):
-        canon_what_patches = self.list_patches(section)
-        if canon_what_patches:
-            target_dir = self.get_option('app_dir')
-            patcher.apply_patches(canon_what_patches, target_dir)
-
-    def config_params(self, config_fn):
-        mp = dict(self.params)
-        if config_fn:
-            mp['CONFIG_FN'] = config_fn
-        return mp
-
-    @property
-    def packages(self):
-        return self.extended_packages()
-
-    def extended_packages(self):
-        pkg_list = self.get_option('packages', default_value=[])
-        if not pkg_list:
-            pkg_list = []
-        for name, values in self.subsystems.items():
-            if 'packages' in values:
-                LOG.debug("Extending package list with packages for subsystem: %r", name)
-                pkg_list.extend(values.get('packages'))
-        return pkg_list
-
+class InstallableMixin(base.Component):
     def pre_install(self):
         pkgs = self.packages
         for p in pkgs:
@@ -124,10 +70,24 @@ class PkgInstallComponent(base.Component):
                              self.cfg_dir, uid, gid, e)
         return files
 
+    @property
+    def packages(self):
+        return self.extended_packages()
 
-class PythonInstallComponent(PkgInstallComponent):
+    def extended_packages(self):
+        pkg_list = self.get_option('packages', default_value=[])
+        if not pkg_list:
+            pkg_list = []
+        for name, values in self.subsystems.items():
+            if 'packages' in values:
+                LOG.debug("Extending package list with packages for subsystem: %r", name)
+                pkg_list.extend(values.get('packages'))
+        return pkg_list
+
+
+class PythonComponent(base.BasicComponent):
     def __init__(self, *args, **kargs):
-        PkgInstallComponent.__init__(self, *args, **kargs)
+        super(PythonComponent, self).__init__(*args, **kargs)
         app_dir = self.get_option('app_dir')
         tools_dir = sh.joinpths(app_dir, 'tools')
         self.requires_files = [
@@ -140,6 +100,12 @@ class PythonInstallComponent(PkgInstallComponent):
         ]
         self._origins_fn = kargs['origins_fn']
 
+    def config_params(self, config_fn):
+        mp = dict(self.params)
+        if config_fn:
+            mp['CONFIG_FN'] = config_fn
+        return mp
+
     def download(self):
         """Download sources needed to build the component, if any."""
         target_dir = self.get_option('app_dir')
@@ -171,6 +137,14 @@ class PythonInstallComponent(PkgInstallComponent):
         return egg_info
 
 
+class PkgInstallComponent(base.BasicComponent, InstallableMixin):
+    pass
+
+
+class PythonInstallComponent(PythonComponent, InstallableMixin):
+    pass
+
+
 class PkgUninstallComponent(base.Component):
     def __init__(self, *args, **kargs):
         super(PkgUninstallComponent, self).__init__(*args, **kargs)

anvil/components/global_requirements.py

@@ -0,0 +1,28 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+#    Copyright (C) 2014 Yahoo! Inc. All Rights Reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from anvil import shell as sh
+
+from anvil.components import base_install as base
+
+
+class GlobalRequirements(base.PythonComponent):
+    def __init__(self, *args, **kargs):
+        super(GlobalRequirements, self).__init__(*args, **kargs)
+        app_dir = self.get_option('app_dir')
+        self.requires_files = [
+            sh.joinpths(app_dir, 'global-requirements.txt'),
+        ]

anvil/packaging/helpers/py2rpm_helper.py

@@ -46,10 +46,11 @@ class Helper(object):
             "--rpm-base",
             self._rpmbuild_dir
         ]
-        cmdline += [
-            "--epoch-map"
-        ] + ["%s==%s" % (key, value)
-             for key, value in self._epoch_map.iteritems()]
+        if self._epoch_map:
+            cmdline += [
+                "--epoch-map"
+            ] + ["%s==%s" % (key, value)
+                 for key, value in self._epoch_map.iteritems()]
         if self._package_map:
             cmdline += [
                 "--package-map",

conf/components/global-requirements.yaml

@@ -0,0 +1,4 @@
+# Settings for component global_requirements
+---
+
+...

conf/distros/rhel.yaml

@@ -23,6 +23,7 @@ dependency_handler:
         sqlalchemy-migrate: python-migrate
         qpid-python: python-qpid # Why is this one backwards :-/
         PyYAML: PyYAML
+        pyzmq: python-zmq
     arch_dependent:
     - selenium
     - xattr
@@ -407,6 +408,13 @@ components:
             api-cfn: openstack-heat-api-cfn
             api-cloudwatch: openstack-heat-api-cloudwatch
             engine: openstack-heat-engine
+    global-requirements:
+        action_classes:
+            install: anvil.components.global_requirements:GlobalRequirements
+            running: anvil.components.base_runtime:EmptyRuntime
+            test: anvil.components.base_testing:PythonTestingComponent
+            coverage: anvil.components.base_testing:PythonTestingComponent
+            uninstall: anvil.components.base_install:PkgUninstallComponent
     ceilometer:
         pip:
         -   name: wsme

conf/origins/havana-git.yaml

@@ -19,6 +19,9 @@ glance-client:
 glance:
   repo: git://github.com/openstack/glance.git
   branch: stable/havana
+global-requirements:
+  repo: git://github.com/openstack/requirements.git
+  branch: stable/havana
 heat-client:
   repo: git://github.com/openstack/python-heatclient.git
   tag: 0.2.5

conf/origins/master.yaml

@@ -19,6 +19,9 @@ glance-client:
 glance:
   repo: git://github.com/openstack/glance.git
   branch: master
+global-requirements:
+  repo: git://github.com/openstack/requirements.git
+  branch: master
 heat-client:
   repo: git://github.com/openstack/python-heatclient.git
   branch: master

conf/personas/requirements.yaml

@@ -0,0 +1,7 @@
+---
+components:
+- general
+- global-requirements
+supports:
+- rhel
+...