Add: core cli, lazy_group, example apps

isp_maintenance/apps/dci6/access/commands.py

@@ -0,0 +1,12 @@
+import click
+
+
+@click.group(help='access command for lazy example')
+@click.option('--debug/--no-debug', default=False)
+def cli(debug):
+    click.echo(f"Debug mode is {'on' if debug else 'off'}")
+
+
+@cli.command()
+def enable():
+    click.echo('Access granted')

isp_maintenance/apps/dci6/commands.py

@@ -0,0 +1,13 @@
+import click
+
+from core.cli.lazy_group import LazyGroup
+from settings.general import INSTALLED_APPS
+
+
+@click.group(
+    cls=LazyGroup,
+    lazy_subcommands=INSTALLED_APPS['dci6'],
+    help='dci6 command for lazy example',
+)
+def cli():
+    pass

isp_maintenance/apps/vm6/access/commands.py

@@ -0,0 +1,12 @@
+import click
+
+
+@click.group(help='access command for lazy example')
+@click.option('--debug/--no-debug', default=False)
+def cli(debug):
+    click.echo(f"Debug mode is {'on' if debug else 'off'}")
+
+
+@cli.command()
+def enable():
+    click.echo('Access granted')

isp_maintenance/apps/vm6/commands.py

@@ -0,0 +1,12 @@
+import click
+from core.cli.lazy_group import LazyGroup
+from settings.general import INSTALLED_APPS
+
+
+@click.group(
+    cls=LazyGroup,
+    lazy_subcommands=INSTALLED_APPS['vm6'],
+    help='vm6 command for lazy example',
+)
+def cli():
+    pass

isp_maintenance/apps/vm6/nodes/commands.py

@@ -0,0 +1,13 @@
+import click
+
+
+@click.group(help='nodes command for lazy example')
+def cli():
+    pass
+
+
+@cli.command(name='list')
+def nodes_list():
+    click.echo('NODES LIST: etc...')
+    for num in range(1, 10):
+        click.echo(num)

isp_maintenance/core/cli/lazy_group.py

@@ -0,0 +1,39 @@
+import importlib
+import click
+
+
+class LazyGroup(click.Group):
+    def __init__(self, *args, lazy_subcommands=None, **kwargs):
+        super().__init__(*args, **kwargs)
+        # lazy_subcommands is a map of the form:
+        #
+        #   {command-name} -> {module-name}.{command-object-name}
+        #
+        self.lazy_subcommands = lazy_subcommands or {}
+
+    def list_commands(self, ctx):
+        base = super().list_commands(ctx)
+        lazy = sorted(self.lazy_subcommands.keys())
+        return base + lazy
+
+    def get_command(self, ctx, cmd_name):
+        if cmd_name in self.lazy_subcommands:
+            return self._lazy_load(cmd_name)
+        return super().get_command(ctx, cmd_name)
+
+    def _lazy_load(self, cmd_name):
+        # lazily loading a command,
+        # first get the module name and attribute name
+        import_path = self.lazy_subcommands[cmd_name]
+        modname, cmd_object_name = import_path.rsplit(".", 1)
+        # do the import
+        mod = importlib.import_module(modname)
+        # get the Command object from that module
+        cmd_object = getattr(mod, cmd_object_name)
+        # check the result to make debugging easier
+        if not isinstance(cmd_object, click.BaseCommand):
+            raise ValueError(
+                f"Lazy loading of {import_path} failed by returning "
+                "a non-command object"
+            )
+        return cmd_object

isp_maintenance/ispmgr.py

@@ -1,9 +1,21 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-from settings.environment import env
+import click
+
+from core.cli.lazy_group import LazyGroup
 
 
-# TODO: delete this demo
-# Just show you which env get application or default values
-for key, value in env.dump().items():
-    print(key, '|', value)
+@click.group(
+    cls=LazyGroup,
+    lazy_subcommands={
+        'vm6': 'apps.vm6.commands.cli',
+        'dci6': 'apps.dci6.commands.cli',
+    },
+    help='main CLI command for lazy example',
+)
+def cli():
+    pass
+
+
+if __name__ == '__main__':
+    cli()

isp_maintenance/settings/__init__.py

@@ -1,4 +1,4 @@
-from settings.environment import BASE_DIR
+from settings.general import BASE_DIR
 
 from settings.platform import (
     PLATFORM_TYPE,

isp_maintenance/settings/db.py

@@ -9,7 +9,10 @@ DB_ENGINE = env.str(
 )
 
 # Connection parameters:
-DB_HOST = env.str('DB_HOST', 'mysql')
+DB_HOST = env.str(
+    'DB_HOST',
+    PLATFORM_CONFIG.get('DatabaseType', 'mysql')
+)
 DB_PORT = env.int('DB_PORT', 3306)
 DB_USER = env.str('DB_USER', 'root')
 

isp_maintenance/settings/environment.py

@@ -1,11 +1,6 @@
-import pathlib
 from environs import Env
 
 
-# Build paths inside the project like this: BASE_DIR / 'subdir'.
-BASE_DIR = pathlib.Path(__file__).resolve().parent.parent
-
-
 # Init environment:
 env = Env()
 

isp_maintenance/settings/general.py

@@ -0,0 +1,15 @@
+import pathlib
+
+
+# Build paths inside the project like this: BASE_DIR / 'subdir'.
+BASE_DIR = pathlib.Path(__file__).resolve().parent.parent
+
+INSTALLED_APPS = {
+    'vm6': {
+        'access': 'apps.vm6.access.commands.cli',
+        'nodes': 'apps.vm6.nodes.commands.cli',
+    },
+    'dci6': {
+        'access': 'apps.dci6.access.commands.cli',
+    },
+}

isp_maintenance/settings/platform.py

@@ -1,4 +1,5 @@
-from settings.environment import env, BASE_DIR
+from settings.environment import env
+from settings.general import BASE_DIR
 from utils.helpers import parse_json_file