Early code for Actor-side implementation of configs

gistfile1.diff

diff --git a/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/actor.py b/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/actor.py
index 4ef726f5..e85240be 100644
--- a/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/actor.py
+++ b/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/actor.py
@@ -6,6 +6,94 @@ from leapp.tags import FactsPhaseTag, IPUWorkflowTag
 CONFIGURATION_BASE_PATH = '/etc/leapp/transaction'
 
 
+import abc
+import six
+
+try: import yaml
+from leapp.fields import List,
+
+
+
+"""
+Example config file, can be generated programmatically:
+
+transaction:
+    to_install_description__: |
+        List of packages to be added to the upgrade transaction.
+        Signed packages which are already installed will be skipped.
+    to_remove_description__: |
+        List of packages to be removed from the upgrade transaction
+        initial-setup should be removed to avoid it asking for EULA acceptance during upgrade
+    to_remove:
+        - initial-setup
+    to_keep_description__: |
+        List of packages to be kept in the upgrade transaction
+    to_keep:
+        - leapp
+        - python2-leapp
+        - python3-leapp
+        - leapp-repository
+        - snactor
+"""
+@six.add_metaclass(abc.ABCMeta)
+class Config:
+    @abc.abstractproperty
+    def section():
+        pass
+
+    @abc.abstractproperty
+    def name():
+        pass
+
+    @abc.abstractproperty
+    def type_():
+        pass
+
+    @abc.abstractproperty
+    def description():
+        pass
+
+
+### Nested containers?
+### Duplication of default value in type_ and Config.  If we eliminate that, we need to extract default from the type_ for the documentation.
+class Transaction_ToInstall(Config):
+    section = "transaction"
+    name = "to_install"
+    type_ = fields.List(fields.String(), default=[])
+    default = []
+    description = """
+        List of packages to be added to the upgrade transaction.
+        Signed packages which are already installed will be skipped.
+    """
+
+
+class Transaction_ToKeep(Config):
+    section = "transaction"
+    name = "to_keep"
+    type_ = fields.List(fields.String(), default=[
+        "leapp",
+        "python2-leapp",
+        "python3-leapp",
+        "leapp-repository",
+        "snactor",
+    ])
+    description = """
+        List of packages to be kept in the upgrade transaction.
+    """
+
+
+class Transaction_ToRemove(Config):
+    section = "transaction"
+    name = "to_remove"
+    type_ = fields.List(fields.String(), default=[
+        "initial-setup",
+    ])
+    description = """
+        List of packages to be removed from the upgrade transaction.
+        initial-setup should be removed to avoid it asking for EULA acceptance during upgrade.
+    """
+
+
 class RpmTransactionConfigTasksCollector(Actor):
     """
     Provides additional RPM transaction tasks from /etc/leapp/transaction.
@@ -13,11 +101,11 @@ class RpmTransactionConfigTasksCollector(Actor):
     After collecting task data from /etc/leapp/transaction directory, a message with relevant data
     will be produced.
     """
-
+    configs = (Transaction_ToInstall, Transaction_ToKeep, Transation_ToRemove)
     name = 'rpm_transaction_config_tasks_collector'
     consumes = (InstalledRedHatSignedRPM,)
     produces = (RpmTransactionTasks,)
     tags = (FactsPhaseTag, IPUWorkflowTag)
 
     def process(self):
-        self.produce(load_tasks(CONFIGURATION_BASE_PATH, self.log))
+        self.produce(load_tasks(self.config, self.log))
diff --git a/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/libraries/rpmtransactionconfigtaskscollector.py b/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/libraries/rpmtransactionconfigtaskscollector.py
index fb6ae8ff..4c37b709 100644
--- a/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/libraries/rpmtransactionconfigtaskscollector.py
+++ b/repos/system_upgrade/common/actors/rpmtransactionconfigtaskscollector/libraries/rpmtransactionconfigtaskscollector.py
@@ -18,11 +18,11 @@ def load_tasks_file(path, logger):
     return []
 
 
-def load_tasks(base_dir, logger):
+def load_tasks(config, logger):
     # Loads configuration files to_install, to_keep, and to_remove from the given base directory
     rpms = next(api.consume(InstalledRedHatSignedRPM))
     rpm_names = [rpm.name for rpm in rpms.items]
-    to_install = load_tasks_file(os.path.join(base_dir, 'to_install'), logger)
+    to_install = config['transaction']['to_install']
     # we do not want to put into rpm transaction what is already installed (it will go to "to_upgrade" bucket)
     to_install_filtered = [pkg for pkg in to_install if pkg not in rpm_names]
 
@@ -34,5 +34,5 @@ def load_tasks(base_dir, logger):
 
     return RpmTransactionTasks(
         to_install=to_install_filtered,
-        to_keep=load_tasks_file(os.path.join(base_dir, 'to_keep'), logger),
-        to_remove=load_tasks_file(os.path.join(base_dir, 'to_remove'), logger))
+        to_keep=config['transaction']['to_keep'],
+        to_remove=config['transaction']['to_remove'])