Task scheduler and backup

wilfred/database.py

@@ -37,6 +37,7 @@ class Server(Base):
     status = Column(String)
 
     environment_variables = relationship("EnvironmentVariable")
+    scheduled_tasks = relationship("ScheduledTask")
 
     def __repr__(self):
         return f"<Server(id='{self.id}', name='{self.name}', image_uid='{self.image_uid}', port='{self.port}')>"
@@ -51,6 +52,22 @@ class EnvironmentVariable(Base):
     value = Column(String)
 
 
+class ScheduledTask(Base):
+    __tablename__ = "scheduled_task"
+
+    id = Column(Integer, primary_key=True)
+    server_id = Column(String, ForeignKey("servers.id"), unique=False)
+
+    minute = Column(Integer, nullable=True)
+    hour = Column(Integer, nullable=True)
+    day_of_the_month = Column(Integer, nullable=True)
+    month = Column(Integer, nullable=True)
+    day_of_the_week = Column(Integer, nullable=True)
+
+    task_type = Column(String)
+    value = Column(String)
+
+
 Base.metadata.create_all(engine)
 
 Session = sessionmaker()

wilfred/scheduler.py

@@ -0,0 +1,56 @@
+#################################################################
+#                                                               #
+# Wilfred                                                       #
+# Copyright (C) 2020, Vilhelm Prytz, <vilhelm@prytznet.se>      #
+#                                                               #
+# Licensed under the terms of the MIT license, see LICENSE.     #
+# https://github.com/wilfred-dev/wilfred                        #
+#                                                               #
+#################################################################
+
+import click
+
+from tabulate import tabulate
+
+from wilfred.database import session, ScheduledTask
+
+
+class TaskScheduler(object):
+    def __init__(self, server):
+        self._server = server
+
+    def pretty(self):
+        data = [u.__dict__ for u in self._server.scheduled_tasks]
+
+        headers = {
+            "minute": click.style("Minute", bold=True),
+            "hour": click.style("Hour", bold=True),
+            "day_of_the_month": click.style("Day of the Month", bold=True),
+            "month": click.style("Month", bold=True),
+            "day_of_the_week": click.style("Hour", bold=True),
+            "task_type": click.style("Task Type", bold=True),
+            "value": click.style("Value", bold=True),
+        }
+
+        return tabulate(data, headers=headers, tablefmt="fancy_grid",)
+
+    def create(
+        self, minute, hour, day_of_the_month, month, day_of_the_week, task_type, value
+    ):
+        # create
+        new_task = ScheduledTask(
+            server_id=self._server.id,
+            minute=minute,
+            hour=hour,
+            day_of_the_month=day_of_the_month,
+            month=month,
+            day_of_the_week=day_of_the_week,
+            task_type=task_type,
+            value=value,
+        )
+        session.add(new_task)
+
+        try:
+            session.commit()
+        except Exception as e:
+            raise Exception(f"could not create task, {str(e)}")

wilfred/wilfred.py

@@ -32,6 +32,7 @@
 from wilfred.core import is_integer, random_string, check_for_new_releases
 from wilfred.migrate import Migrate
 from wilfred.server_config import ServerConfig
+from wilfred.scheduler import TaskScheduler
 
 if sys.platform.startswith("win"):
     click.echo("Wilfred does not support Windows")
@@ -717,5 +718,24 @@ def _get_variable_occurrences(variable, raw):
     click.echo(server_conf.pretty())
 
 
+@cli.command(short_help="Schedule tasks/scripts for a specific server.")
+@click.argument("name")
+@click.argument("action", required=False)
+def tasks(name, action):
+    server = session.query(Server).filter_by(name=name.lower()).first()
+
+    if not server:
+        error("Server does not exist", exit_code=1)
+
+    _tasks = TaskScheduler(server)
+
+    if not action:
+        click.echo(_tasks.pretty())
+        exit(0)
+
+    if action.lower() == "create":
+        click.echo("todo")
+
+
 if __name__ == "__main__":
     main()