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import contextlib
import logging
from django.core.management.base import BaseCommand
from django.db import DEFAULT_DB_ALIAS
from pgtrigger import core, installation, registry, runtime
def _setup_logging(): # pragma: no cover
installation.LOGGER.addHandler(logging.StreamHandler())
if not installation.LOGGER.level:
installation.LOGGER.setLevel(logging.INFO)
class SubCommands(BaseCommand): # pragma: no cover
"""
Subcommand class vendored in from
https://github.com/andrewp-as-is/django-subcommands.py
because of installation issues
"""
argv = []
subcommands = {}
def add_arguments(self, parser):
subparsers = parser.add_subparsers(dest="subcommand", title="subcommands", description="")
subparsers.required = True
for command_name, command_class in self.subcommands.items():
command = command_class()
subparser = subparsers.add_parser(command_name, help=command_class.help)
command.add_arguments(subparser)
prog_name = subcommand = ""
if self.argv:
prog_name = self.argv[0]
subcommand = self.argv[1]
command_parser = command.create_parser(prog_name, subcommand)
subparser._actions = command_parser._actions
def run_from_argv(self, argv):
self.argv = argv
return super().run_from_argv(argv)
def handle(self, *args, **options):
command_name = options["subcommand"]
self.subcommands.get(command_name)
command_class = self.subcommands[command_name]
if self.argv:
args = [self.argv[0]] + self.argv[2:]
return command_class().run_from_argv(args)
else:
return command_class().execute(*args, **options)
class BaseSchemaCommand(BaseCommand):
"""Sets the search path based on any "schema" option that's found"""
def handle(self, *args, **options):
database = options["database"] or DEFAULT_DB_ALIAS
schemas = options["schema"] or []
if schemas:
context = runtime.schema(*schemas, databases=[database])
else:
context = contextlib.nullcontext()
with context:
return self.handle_with_schema(*args, **options)
class LsCommand(BaseSchemaCommand):
help = "List triggers and their installation state."
def add_arguments(self, parser):
parser.add_argument("uris", nargs="*", type=str)
parser.add_argument("-d", "--database", help="The database")
parser.add_argument(
"-s",
"--schema",
action="append",
help="Set the search path to this schema",
)
def handle_with_schema(self, *args, **options):
uris = options["uris"]
status_formatted = {
core.UNINSTALLED: "\033[91mUNINSTALLED\033[0m",
core.INSTALLED: "\033[92mINSTALLED\033[0m",
core.OUTDATED: "\033[93mOUTDATED\033[0m",
core.PRUNE: "\033[96mPRUNE\033[0m",
core.UNALLOWED: "\033[94mUNALLOWED\033[0m",
}
enabled_formatted = {
True: "\033[92mENABLED\033[0m",
False: "\033[91mDISABLED\033[0m",
None: "\033[94mN/A\033[0m",
}
def _format_status(status, enabled, uri):
if status in (core.UNINSTALLED, core.UNALLOWED):
enabled = None
return status_formatted[status], enabled_formatted[enabled], uri
formatted = []
for model, trigger in registry.registered(*uris):
uri = trigger.get_uri(model)
status, enabled = trigger.get_installation_status(model, database=options["database"])
formatted.append(_format_status(status, enabled, uri))
if not uris:
for trigger in installation.prunable(database=options["database"]):
formatted.append(_format_status("PRUNE", trigger[2], f"{trigger[0]}:{trigger[1]}"))
max_status_len = max(len(val) for val, _, _ in formatted)
max_enabled_len = max(len(val) for _, val, _ in formatted)
for status, enabled, uri in formatted:
print(
f"{{: <{max_status_len}}} {{: <{max_enabled_len}}} {{}}".format(
status, enabled, uri
)
)
class InstallCommand(BaseSchemaCommand):
help = "Install triggers."
def add_arguments(self, parser):
parser.add_argument("uris", nargs="*", type=str)
parser.add_argument("-d", "--database", help="The database")
parser.add_argument(
"-s",
"--schema",
action="append",
help="Set the search path to this schema",
)
def handle_with_schema(self, *args, **options):
_setup_logging()
installation.install(*options["uris"], database=options["database"])
class UninstallCommand(BaseSchemaCommand):
help = "Uninstall triggers."
def add_arguments(self, parser):
parser.add_argument("uris", nargs="*", type=str)
parser.add_argument("-d", "--database", help="The database")
parser.add_argument(
"-s",
"--schema",
action="append",
help="Set the search path to this schema",
)
def handle_with_schema(self, *args, **options):
_setup_logging()
installation.uninstall(*options["uris"], database=options["database"])
class EnableCommand(BaseSchemaCommand):
help = "Enable triggers."
def add_arguments(self, parser):
parser.add_argument("uris", nargs="*", type=str)
parser.add_argument("-d", "--database", help="The database")
parser.add_argument(
"-s",
"--schema",
action="append",
help="Set the search path to this schema",
)
def handle_with_schema(self, *args, **options):
_setup_logging()
installation.enable(*options["uris"], database=options["database"])
class DisableCommand(BaseSchemaCommand):
help = "Disable triggers."
def add_arguments(self, parser):
parser.add_argument("uris", nargs="*", type=str)
parser.add_argument("-d", "--database", help="The database")
parser.add_argument(
"-s",
"--schema",
action="append",
help="Set the search path to this schema",
)
def handle_with_schema(self, *args, **options):
_setup_logging()
installation.disable(*options["uris"], database=options["database"])
class PruneCommand(BaseSchemaCommand):
help = "Prune installed triggers that are no longer in the codebase."
def add_arguments(self, parser):
parser.add_argument("-d", "--database", help="The database")
parser.add_argument(
"-s",
"--schema",
action="append",
help="Set the search path to this schema",
)
def handle_with_schema(self, *args, **options):
_setup_logging()
installation.prune(database=options["database"])
class Command(SubCommands):
help = "Core django-pgtrigger subcommands."
subcommands = {
"ls": LsCommand,
"install": InstallCommand,
"uninstall": UninstallCommand,
"enable": EnableCommand,
"disable": DisableCommand,
"prune": PruneCommand,
}
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