Moved to SQLAlchemy

Finished switch to JSONRPC commit 9cf6dd9a0e03c71135c01d4ad4f7d3be0f1e3066 Author: Giovanni Harting <giovanni.harting@touchdata.net> Date: Sat Oct 10 21:09:20 2015 +0200 fixed some bugs added some missing things from transition commit 8ed44b8fcde739b541b1834049025b055a50e6fe Author: Marius Schiffer <marius@mschiffer.de> Date: Sat Oct 10 05:53:41 2015 +0200 Creating fresh database works now. Fixed pwm_freq property. commit dc88ef0df427f90746a499912eff70dfce967c55 Author: Marius Schiffer <marius@mschiffer.de> Date: Sat Oct 10 04:40:41 2015 +0200 Completed SQLAlchemy integration. Completed JSON-RPC integration. All daemon class functionality is now on module-level (required for JSON-RPC decorators). Migrations will have to be reimplemented with alembic. commit a4cabdcd00a3e2a3cbbd92a3c9d59a4235e4d277 Author: Marius Schiffer <marius@mschiffer.de> Date: Sat Oct 10 03:00:19 2015 +0200 First steps towards SQLAlchemy integration.
2015-10-10 21:13:29 +02:00
parent 87f2d12c22
commit d5f403d557
8 changed files with 341 additions and 363 deletions
--- a/ledd.py
+++ b/ledd.py
@@ -36,9 +36,6 @@ from pkgutil import iter_modules

 from docopt import docopt

-import ledd.daemon
-import ledd
-
 if "smbus" not in (name for loader, name, ispkg in iter_modules()):
    print("smbus not found, installing replacement")

@@ -65,6 +62,9 @@ if "smbus" not in (name for loader, name, ispkg in iter_modules()):
    sys.modules['smbus'] = SMBusModule
    sys.modules['smbus'].SMBus = SMBus

+import ledd.daemon
+import ledd
+

 def pid_exists(processid):
    if processid < 0:
@@ -118,7 +118,7 @@ if __name__ == "__main__":
                    os.chdir(wdir)
                    with open("ledd.pid", 'w') as pidf:
                        pidf.write(str(os.getpid()) + '\n')
-                    daemon = ledd.daemon.Daemon()
+                    ledd.daemon.run()
                else:
                    sys.exit()
            else:
@@ -126,4 +126,4 @@ if __name__ == "__main__":
        except OSError as e:
            log.fatal("Start failed: %s", e)
    else:
-        daemon = ledd.daemon.Daemon()
+        ledd.daemon.run()
--- a/ledd/init.py
+++ b/ledd/init.py
@@ -14,4 +14,13 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.

+from sqlalchemy.orm import sessionmaker, scoped_session
+from sqlalchemy.ext.declarative import declarative_base
+
 VERSION = "0.1"
+
+engine = None
+session = scoped_session(sessionmaker())
+""" :type : sqlalchemy.orm.scoping.scoped_session """
+Base = declarative_base()
+Base.query = session.query_property()
--- a/ledd/controller.py
+++ b/ledd/controller.py
@@ -18,9 +18,12 @@ from json import JSONEncoder
 import logging
 import time

-import smbus
+from sqlalchemy import Column, Integer, String
+from sqlalchemy.orm import relationship

+import smbus
 from ledd.stripe import Stripe
+from . import Base

 PCA9685_SUBADR1 = 0x2
 PCA9685_SUBADR2 = 0x3
@@ -41,61 +44,25 @@ ALLLED_OFF_L = 0xFC
 ALLLED_OFF_H = 0xFD


-class Controller:
+class Controller(Base):
+    __tablename__ = "controller"
+
+    id = Column(Integer, primary_key=True)
+    channels = Column(Integer)
+    i2c_device = Column(Integer)
+    address = Column(String)
+    stripes = relationship("Stripe", backref="controller")
+    _pwm_freq = Column("pwm_freq", Integer)
+
    """
    A controller controls a number of stripes.
    """

-    @classmethod
-    def from_row(cls, db, row):
-        # load from db
-        return cls(db, pwm_freq=row["pwm_freq"], channels=row["channels"], i2c_device=row["i2c_device"],
-                   address=row["address"], cid=row["id"], from_db=True)
-
-    @staticmethod
-    def from_db(db):
-        l = []
-        cur = db.cursor()
-        for row in cur.execute("select * from controller"):
-            c = Controller.from_row(db, row)
-            l.append(c)
-        cur.close()
-        return l
-
-    def save_to_db(self):
-        cur = self.db.cursor()
-        if self.id == -1:
-            cur.execute("INSERT INTO controller (pwm_freq, channels, i2c_device, address) VALUES (?,?,?,?)",
-                        (self._pwm_freq, self.channels, self.i2c_device, self.address))
-            self.id = cur.lastrowid
-        else:
-            cur.execute("UPDATE controller SET pwm_freq=?, channels=?, i2c_device=?, address=? WHERE id = ?",
-                        (self._pwm_freq, self.channels, self.i2c_device, self.address, self.id))
-        cur.close()
-        self.db.commit()
-
-    def __init__(self, db, channels, i2c_device, address, pwm_freq=1526, cid=-1, from_db=False):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
        self._mode = None
-        self.channels = channels
-        self.i2c_device = i2c_device
-        self.bus = smbus.SMBus(i2c_device)
-        self.address = address
-        self._address = int(address, 16)
-        self.id = cid
-        self.db = db
-        self.stripes = []
-        self._pwm_freq = None
-        self.pwm_freq = pwm_freq
-        if not from_db:
-            self.save_to_db()
-        self.load_stripes()
-
-    def load_stripes(self):
-        cur = self.db.cursor()
-        for stripe in cur.execute("select * from stripes where controller_id = ?", (self.id,)):
-            self.stripes.append(Stripe.from_db(self, stripe))
-        logging.getLogger(__name__).debug("Loaded %s stripes for controller %s", len(self.stripes), self.id)
-        cur.close()
+        self.bus = smbus.SMBus(self.i2c_device)
+        self._address = int(self.address, 16)

    def __repr__(self):
        return "<Controller stripes={} cid={}>".format(len(self.stripes), self.id)
@@ -114,9 +81,6 @@ class Controller:
    def get_channel(self, channel):
        return self.bus.read_word_data(self._address, LED0_OFF_L + 4 * channel) / 4095

-    def add_stripe(self, stripe):
-        self.stripes.append(stripe)
-
    def reset(self):
        self.mode = int("0b00100001", 2)  # MODE1 -> 0b00000001
        time.sleep(0.015)
--- a/ledd/daemon.py
+++ b/ledd/daemon.py
@@ -17,155 +17,135 @@
 import logging
 import configparser
 import json
-import sqlite3
 import os
 import sys
 import asyncio
 import signal

+from sqlalchemy import create_engine
 from jsonrpc import JSONRPCResponseManager, dispatcher
-
 from jsonrpc.exceptions import JSONRPCError
 import spectra
+from sqlalchemy.exc import OperationalError
+from sqlalchemy.orm.exc import NoResultFound

-from ledd import controller, VERSION
+from ledd import VERSION
 from ledd.effectstack import EffectStack
+from ledd.models import Meta
 from ledd.stripe import Stripe
+from ledd.controller import Controller, ControllerEncoder
+from . import Base, session

 log = logging.getLogger(__name__)

+daemonSection = 'daemon'
+databaseSection = 'db'
+loop = None
+""" :type : asyncio.BaseEventLoop """
+effects = []

-class Daemon:
-    daemonSection = 'daemon'
-    databaseSection = 'db'
-    instance = None
-    """:type : Daemon """
-    loop = None
-    """ :type : asyncio.BaseEventLoop """
-    effects = []
-
-    def __init__(self):
-        Daemon.instance = self

+def run():
+    try:
+        # read config
+        config = configparser.ConfigParser()
        try:
-            # read config
-            self.config = configparser.ConfigParser()
-            try:
-                with open('ledd.config', 'w+') as f:
-                    self.config.read_file(f)
-            except FileNotFoundError:
-                log.info("No config file found!")
-                pass
+            with open('ledd.config', 'w+') as f:
+                config.read_file(f)
+        except FileNotFoundError:
+            log.info("No config file found!")
+            pass

-            # SQL init
-            self.sqldb = sqlite3.connect(self.config.get(self.databaseSection, 'name', fallback='ledd.sqlite'))
-            self.sqldb.row_factory = sqlite3.Row
+        # SQL init
+        global engine
+        engine = create_engine("sqlite:///" + config.get(databaseSection, 'name', fallback='ledd.sqlite'),
+                               echo=log.getEffectiveLevel() == logging.DEBUG)
+        session.configure(bind=engine)
+        Base.metadata.bind = engine
+        if not check_db():
+            init_db()

-            if not self.check_db():
-                self.init_db()
+        log.debug(Controller.query.all())
+        logging.getLogger("asyncio").setLevel(log.getEffectiveLevel())

-            self.sqldb.commit()
+        # sigterm handler
+        def sigterm_handler():
+            raise SystemExit

-            # init controllers from db
-            self.controllers = controller.Controller.from_db(self.sqldb)
-            log.debug(self.controllers)
-            logging.getLogger("asyncio").setLevel(log.getEffectiveLevel())
+        signal.signal(signal.SIGTERM, sigterm_handler)

-            # sigterm handler
-            def sigterm_handler():
-                raise SystemExit
+        # init plugins
+        # TODO: check all plugins for existing hooks

-            signal.signal(signal.SIGTERM, sigterm_handler)
-
-            # init plugins
-            # TODO: check all plugins for existing hooks
-
-            # main loop
-            self.loop = asyncio.get_event_loop()
-            coro = self.loop.create_server(LedDProtocol,
-                                           self.config.get(self.daemonSection, 'host', fallback='0.0.0.0'),
-                                           self.config.get(self.daemonSection, 'port', fallback=1425))
-            self.server = self.loop.run_until_complete(coro)
-            self.loop.run_forever()
-        except (KeyboardInterrupt, SystemExit):
-            log.info("Exiting")
-            try:
-                os.remove("ledd.pid")
-            except FileNotFoundError:
-                pass
-            self.sqldb.close()
-            self.server.close()
-            self.loop.run_until_complete(self.server.wait_closed())
-            self.loop.close()
-            sys.exit(0)
-
-    def check_db(self):
-        """
-        Checks database version
-        :return: database validity
-        :rtype: bool
-        """
-        c = self.sqldb.cursor()
+        # main loop
+        global loop
+        loop = asyncio.get_event_loop()
+        coro = loop.create_server(LedDProtocol,
+                                  config.get(daemonSection, 'host', fallback='0.0.0.0'),
+                                  config.get(daemonSection, 'port', fallback=1425))
+        global server
+        server = loop.run_until_complete(coro)
+        loop.run_forever()
+    except (KeyboardInterrupt, SystemExit):
+        log.info("Exiting")
        try:
-            c.execute("SELECT value FROM meta WHERE option = 'db_version'")
-            db_version = c.fetchone()
-            c.close()
+            os.remove("ledd.pid")
+        except FileNotFoundError:
+            pass
+        # TODO: close engine?
+        if server is not None:
+            server.close()
+        if loop is not None:
+            loop.run_until_complete(server.wait_closed())
+            loop.close()
+        sys.exit(0)

-            if db_version is not None:
-                log.info("DB connection established; db-version=%s", db_version[0])

-                if int(db_version[0]) < 2:
-                    with open("ledd/sql/upgrade_1_2.sql", "r") as ufile:
-                        u = self.sqldb.cursor()
-                        u.executescript(ufile.read())
-                        u.close()
-                        log.info("Database upgraded to version %s", 2)
+def check_db():
+    """
+    Checks database version
+    :return: database validity
+    :rtype: bool
+    """
+    try:
+        db_version = Meta.get_version()

-                return True
-            else:
-                return False
-        except sqlite3.OperationalError as e:
-            log.debug("SQLite error: %s", e)
-            c.close()
-            return False
+        if db_version is not None:
+            log.info("DB connection established; db-version=%s", db_version)
+            return True
+    except OperationalError:
+        return False
+    return False

-    def init_db(self):
-        self.sqldb.close()
-        if os.path.exists("ledd.sqlite"):
-            os.remove("ledd.sqlite")
-        self.sqldb = sqlite3.connect(self.config.get(self.databaseSection, 'name', fallback='ledd.sqlite'))
-        self.sqldb.row_factory = sqlite3.Row
-        with open("ledd/sql/ledd.sql", "r") as sqlfile:
-            c = self.sqldb.cursor()
-            c.executescript(sqlfile.read())
-            c.close()
-        self.check_db()

-    @dispatcher.add_method
-    def start_effect(self, **kwargs):
-        """
-        Part of the Color API. Used to start a specific effect.
-        Required JSON parameters: stripe IDs: sids; effect id: eid, effect options: eopt
-        :param req_json: dict of request json
-        """
-        stripes = []
+def init_db():
+    Base.metadata.drop_all()
+    Base.metadata.create_all()
+    session.add(Meta(option="db_version", value="2"))
+    session.commit()
+    check_db()

-        if "sids" in kwargs:
-            for sid in kwargs['sids']:
-                found_s = self.find_stripe(sid)

-                if found_s is not None:
-                    stripes.append(found_s)
+@dispatcher.add_method
+def start_effect(**kwargs):
+    """
+    Part of the Color API. Used to start a specific effect.
+    Required JSON parameters: stripe IDs: sids; effect id: eid, effect options: eopt
+    :param req_json: dict of request json
+    """

-        if len(stripes) > 0:
+    stripes = []
+
+    if "sids" in kwargs:
+        for stripe in Stripe.query.filter(Stripe.id.in_(kwargs['sids'])):
            # TODO: add anything required to start effect with req_json['eid']
            # on stripes[] with options in req_json['eopt']
            effect = EffectStack()
-            self.effects.append(effect)
-            effect.stripes.append(self.controllers[0].stripes[0])
+            effects.append(effect)
+            effect.stripes.append(stripe)
            effect.start()

-            # asyncio.ensure_future(asyncio.get_event_loop().run_in_executor(self.executor, effect.execute))
+            # asyncio.ensure_future(asyncio.get_event_loop().run_in_executor(executor, effect.execute))

            rjson = {
                'eident': None,  # unique effect identifier that identifies excatly this effect started on this set of
@@ -176,171 +156,175 @@ class Daemon:
        else:
            return JSONRPCError(-1003, "Stripeid not found")

-    @dispatcher.add_method
-    def stop_effect(self, **kwargs):
-        """
-        Part of the Color API. Used to stop a specific effect.
-        Required JSON parameters: effect identifier: eident
-        :param req_json: dict of request json
-        """

-        # TODO: add stop effect by eident logic
+@dispatcher.add_method
+def stop_effect(**kwargs):
+    """
+    Part of the Color API. Used to stop a specific effect.
+    Required JSON parameters: effect identifier: eident
+    :param req_json: dict of request json
+    """

-    @dispatcher.add_method
-    def get_effects(self, **kwargs):
-        """
-        Part of the Color API. Used to show all available and running effects.
-        Required JSON parameters: -
-        :param req_json: dict of request json
-        """
+    # TODO: add stop effect by eident logic

-        # TODO: list all effects here and on which stripes they run atm
-        # TODO: all effects get runtime only ids, "eid"'s. They are shown here for the client to start effects.
-        # TODO: All options that an effect may have need to be transmitted here too with "eopt".

-    @dispatcher.add_method
-    def set_color(self, **kwargs):
-        """
-        Part of the Color API. Used to set color of a stripe.
-        Required JSON parameters: stripe ID: sid; HSV values hsv: h,s,v, controller id: cid
-        :param req_json: dict of request json
-        """
+@dispatcher.add_method
+def get_effects(**kwargs):
+    """
+    Part of the Color API. Used to show all available and running effects.
+    Required JSON parameters: -
+    :param req_json: dict of request json
+    """

-        found_s = self.find_stripe(kwargs['sid'])
+    # TODO: list all effects here and on which stripes they run atm
+    # TODO: all effects get runtime only ids, "eid"'s. They are shown here for the client to start effects.
+    # TODO: All options that an effect may have need to be transmitted here too with "eopt".

-        if found_s is None:
-            log.warning("Stripe not found: id=%s", kwargs['sid'])
-        else:
-            found_s.set_color(spectra.hsv(kwargs['hsv']['h'], kwargs['hsv']['s'], kwargs['hsv']['v']))

-    @dispatcher.add_method
-    def add_controller(self, **kwargs):
-        """
-        Part of the Color API. Used to add a controller.
-        Required JSON parameters: channels; i2c_dev: number of i2c device (e.g. /dev/i2c-1 would be i2c_dev = 1);
-                                  address: hexdecimal address of controller on i2c bus, e.g. 0x40
-        :param req_json: dict of request json
-        """
-        try:
-            ncontroller = controller.Controller(Daemon.instance.sqldb, kwargs['channels'],
-                                                kwargs['i2c_dev'], kwargs['address'])
-        except OSError as e:
-            log.error("Error opening i2c device: %s (%s)", kwargs['i2c_dev'], e)
-            return JSONRPCError(-1004, "Error while opening i2c device", e)
+@dispatcher.add_method
+def set_color(**kwargs):
+    """
+    Part of the Color API. Used to set color of a stripe.
+    Required JSON parameters: stripe ID: sid; HSV values hsv: h,s,v, controller id: cid
+    :param req_json: dict of request json
+    """
+    try:
+        stripe = Stripe.query.filter(Stripe.id == kwargs['sid']).one()
+        stripe.set_color(spectra.hsv(kwargs['hsv']['h'], kwargs['hsv']['s'], kwargs['hsv']['v']))
+    except NoResultFound:
+        log.warning("Stripe not found: id=%s", kwargs['sid'])

-        self.controllers.append(ncontroller)
+
+@dispatcher.add_method
+def add_controller(**kwargs):
+    """
+    Part of the Color API. Used to add a controller.
+    Required JSON parameters: channels; i2c_dev: number of i2c device (e.g. /dev/i2c-1 would be i2c_dev = 1);
+                              address: hexdecimal address of controller on i2c bus, e.g. 0x40
+    :param req_json: dict of request json
+    """
+    try:
+        ncontroller = Controller(channels=int(kwargs['channels']), i2c_device=int(kwargs['i2c_dev']),
+                                 address=kwargs['address'])
+    except OSError as e:
+        log.error("Error opening i2c device: %s (%s)", kwargs['i2c_dev'], e)
+        return JSONRPCError(-1004, "Error while opening i2c device", e)
+
+    session.add(ncontroller)
+    session.commit()
+
+    rjson = {
+        'cid': ncontroller.id,
+    }
+
+    return rjson
+
+
+@dispatcher.add_method
+def get_color(**kwargs):
+    """
+    Part of the Color API. Used to get the current color of an stripe.
+    Required JSON parameters: stripes
+    :param req_json: dict of request json
+    """
+    try:
+        stripe = Stripe.query.filter(Stripe.id == kwargs['sid']).one()
+    except NoResultFound:
+        log.warning("Stripe not found: id=%s", kwargs['sid'])
+        return JSONRPCError(-1003, "Stripeid not found")
+
+    rjson = {
+        'color': stripe.color.values,
+    }
+
+    return rjson
+
+
+@dispatcher.add_method
+def add_stripe(**kwargs):
+    """
+    Part of the Color API. Used to add stripes.
+    Required JSON parameters: name; rgb: bool; map: r: r-channel, g: g-channel, b: b-channel, cid
+    :param req_json: dict of request json
+    """
+
+    if "stripe" in kwargs:
+        stripe = kwargs['stripe']
+        c = Controller.query.filter(Controller.id == int(stripe['cid'])).first()
+        """ :type c: ledd.controller.Controller """
+
+        if c is None:
+            return JSONRPCError(-1002, "Controller not found")
+
+        s = Stripe(name=stripe['name'], rgb=bool(stripe['rgb']),
+                   channel_r=stripe['map']['r'], channel_g=stripe['map']['g'], channel_b=stripe['map']['b'])
+        s.controller = c
+        log.debug("Added stripe %s to controller %s; new len %s", c.id, s.id, len(c.stripes))

        rjson = {
-            'cid': ncontroller.id,
+            'sid': s.id,
        }

        return rjson

-    @dispatcher.add_method
-    def get_color(self, **kwargs):
-        """
-        Part of the Color API. Used to get the current color of an stripe.
-        Required JSON parameters: stripes
-        :param req_json: dict of request json
-        """

-        found_s = self.find_stripe(kwargs['sid'])
+@dispatcher.add_method
+def get_stripes(**kwargs):
+    """
+    Part of the Color API. Used to get all registered stripes known to the daemon.
+    Required JSON parameters: none
+    :param req_json: dict of request json
+    """

-        if found_s is None:
-            log.warning("StripeId not found: id=%s", kwargs['sid'])
-            return JSONRPCError(-1003, "Stripeid not found")
+    rjson = {
+        'ccount': len(Controller.query),
+        'controller': json.dumps(Controller.query, cls=ControllerEncoder),
+    }

-        rjson = {
-            'color': found_s.color.values,
-        }
+    return rjson

-        return rjson

-    @dispatcher.add_method
-    def add_stripe(self, **kwargs):
-        """
-        Part of the Color API. Used to add stripes.
-        Required JSON parameters: name; rgb: bool; map: r: r-channel, g: g-channel, b: b-channel, cid
-        :param req_json: dict of request json
-        """
+@dispatcher.add_method
+def test_channel(**kwargs):
+    """
+    Part of the Color API. Used to test a channel on a specified controller.
+    Required JSON parameters: controller id: cid, channel, value
+    :param req_json: dict of request json
+    """

-        if "stripe" in kwargs:
-            stripe = kwargs['stripe']
-            c = next((x for x in self.controllers if x.id == stripe['cid']), None)
-            """ :type c: ledd.controller.Controller """
+    result = Controller.query.filter(Controller.id == kwargs['cid']).first()
+    """ :type : ledd.controller.Controller """

-            if c is None:
-                return JSONRPCError(-1002, "Controller not found")
+    if result is not None:
+        result.set_channel(kwargs['channel'], kwargs['value'], 2.8)

-            s = Stripe(c, stripe['name'], stripe['rgb'],
-                       (stripe['map']['r'], stripe['map']['g'], stripe['map']['b']))

-            c.stripes.append(s)
-            log.debug("Added stripe %s to controller %s; new len %s", c.id, s.id, len(c.stripes))
+@dispatcher.add_method
+def discover(**kwargs):
+    """
+    Part of the Color API. Used by mobile applications to find the controller.
+    Required JSON parameters: none
+    :param req_json: dict of request json
+    """
+    log.debug("recieved action: %s", kwargs['action'])

-            rjson = {
-                'sid': s.id,
-            }
+    rjson = {
+        'version': VERSION
+    }

-            return rjson
+    return rjson

-    @dispatcher.add_method
-    def get_stripes(self, **kwargs):
-        """
-        Part of the Color API. Used to get all registered stripes known to the daemon.
-        Required JSON parameters: none
-        :param req_json: dict of request json
-        """

-        rjson = {
-            'ccount': len(Daemon.instance.controllers),
-            'controller': json.dumps(Daemon.instance.controllers, cls=controller.ControllerEncoder),
-        }
+def find_stripe(sid):
+    """
+    Deprecated. Use a query instead. Or this should be moved to a classmethod in Stripe
+    Finds a given stripeid in the currently known controllers
+    :param sid stripe id
+    :return: stripe if found or none
+    :rtype: ledd.Stripe | None
+    """

-        return rjson
-
-    @dispatcher.add_method
-    def test_channel(self, **kwargs):
-        """
-        Part of the Color API. Used to test a channel on a specified controller.
-        Required JSON parameters: controller id: cid, channel, value
-        :param req_json: dict of request json
-        """
-
-        result = next(filter(lambda x: x.id == kwargs['cid'], self.controllers), None)
-        """ :type : ledd.controller.Controller """
-
-        if result is not None:
-            result.set_channel(kwargs['channel'], kwargs['value'], 2.8)
-
-    @dispatcher.add_method
-    def discover(self, **kwargs):
-        """
-        Part of the Color API. Used by mobile applications to find the controller.
-        Required JSON parameters: none
-        :param req_json: dict of request json
-        """
-        log.debug("recieved action: %s", kwargs['action'])
-
-        rjson = {
-            'version': VERSION
-        }
-
-        return rjson
-
-    def find_stripe(self, sid):
-        """
-        Finds a given stripeid in the currently known controllers
-        :param sid stripe id
-        :return: stripe if found or none
-        :rtype: ledd.Stripe | None
-        """
-        for c in self.controllers:
-            for s in c.stripes:
-                if s.id == sid:
-                    return s
-
-        return None
+    return Stripe.query.filter(Stripe.id == sid).first()


 class LedDProtocol(asyncio.Protocol):
--- a/ledd/models.py
+++ b/ledd/models.py
@@ -0,0 +1,29 @@
+# LEDD Project
+# Copyright (C) 2015 LEDD Team
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from sqlalchemy import String, Column
+
+from . import Base
+
+
+class Meta(Base):
+    __tablename__ = "meta"
+    option = Column(String, primary_key=True)
+    value = Column(String)
+
+    @classmethod
+    def get_version(cls):
+        return cls.query.filter(Meta.option == "db_version").first()
--- a/ledd/sql/ledd.sql
+++ b/ledd/sql/ledd.sql
@@ -1,24 +1,24 @@
 CREATE TABLE `stripes` (
-	`id`	INTEGER PRIMARY KEY AUTOINCREMENT UNIQUE,
-	`name`	TEXT,
-	`rgb`	INTEGER,
-	`controller_id`	INTEGER,
-	`channel_r`	INTEGER,
-	`channel_g`	INTEGER,
-	`channel_b`	INTEGER,
-	`channel_r_gamma` REAL DEFAULT 2.8,
-	`channel_g_gamma` REAL DEFAULT 2.8,
-	`channel_b_gamma` REAL DEFAULT 2.8
+  `id`              INTEGER PRIMARY KEY AUTOINCREMENT UNIQUE,
+  `name`            TEXT,
+  `rgb`             INTEGER,
+  `controller_id`   INTEGER,
+  `channel_r`       INTEGER,
+  `channel_g`       INTEGER,
+  `channel_b`       INTEGER,
+  `channel_r_gamma` REAL DEFAULT 2.8,
+  `channel_g_gamma` REAL DEFAULT 2.8,
+  `channel_b_gamma` REAL DEFAULT 2.8
 );
 CREATE TABLE "meta" (
-	`option` TEXT,
-	`value` TEXT
+  `option` TEXT,
+  `value`  TEXT
 );
-INSERT INTO `meta` VALUES ('db_version','2');
+INSERT INTO `meta` VALUES ('db_version', '2');
 CREATE TABLE "controller" (
-	`id`	INTEGER PRIMARY KEY AUTOINCREMENT UNIQUE,
-	`address`	TEXT,
-	`i2c_device`	INTEGER,
-	`channels`	INTEGER,
-	`pwm_freq`	INTEGER
+  `id`         INTEGER PRIMARY KEY AUTOINCREMENT UNIQUE,
+  `address`    TEXT,
+  `i2c_device` INTEGER,
+  `channels`   INTEGER,
+  `pwm_freq`   INTEGER
 );
--- a/ledd/stripe.py
+++ b/ledd/stripe.py
@@ -13,44 +13,42 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 from spectra import Color
+from sqlalchemy import Integer, ForeignKey, String, Float, Boolean
+from sqlalchemy import Column
+
+from . import Base


-class Stripe:
+class Stripe(Base):
+    __tablename__ = "stripe"
    """
    A stripe is the smallest controllable unit.
    """
+    id = Column(Integer, primary_key=True)
+    controller_id = Column(Integer, ForeignKey('controller.id'))
+    name = Column(String)
+    channel_r = Column(Integer)
+    channel_g = Column(Integer)
+    channel_b = Column(Integer)
+    channel_r_gamma = Column(Float, default=2.8)
+    channel_g_gamma = Column(Float, default=2.8)
+    channel_b_gamma = Column(Float, default=2.8)
+    rgb = Column(Boolean)

-    def __init__(self, controller, name, rgb, channels, sid=-1, gamma_correct=(2.8, 2.8, 2.8), from_db=False):
-        self.controller = controller
-        self.name = name
-        self.rgb = bool(rgb)
-        self.channels = channels
-        self.id = sid
-        self._color = None
-        self.gamma_correct = gamma_correct
-        self.read_color()
-        if not from_db:
-            self.save_to_db()
+    @property
+    def channels(self):
+        return self.channel_r, self.channel_b, self.channel_g

-    def save_to_db(self):
-        cur = self.controller.db.cursor()
-        if self.id == -1:
-            cur.execute("INSERT INTO stripes DEFAULT VALUES")
-            self.id = cur.lastrowid
-        cur.execute(
-            "UPDATE stripes SET "
-            "channel_r_gamma = ?,"
-            "channel_g_gamma = ?,"
-            "channel_b_gamma = ?,"
-            "channel_r = ?,"
-            "channel_g = ?,"
-            "channel_b = ?,"
-            "controller_id = ?,"
-            "name = ? WHERE id = ?",
-            self.gamma_correct + self.channels + (self.controller.id, self.name, self.id))
-        cur.close()
-        self.controller.db.commit()
+    # TODO save channels to db
+
+    @channels.setter
+    def channels(self, t):
+        self.channel_r, self.channel_g, self.channel_b = t
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)

    def read_color(self):
        rc = tuple([float(self.controller.get_channel(channel)) for channel in self.channels])
@@ -60,12 +58,6 @@ class Stripe:
    def __repr__(self):
        return "<Stripe id={}>".format(self.id)

-    @classmethod
-    def from_db(cls, controller, row):
-        return cls(controller, name=row["name"], rgb=row["rgb"],
-                   channels=(row["channel_r"], row["channel_g"], row["channel_b"]), sid=row["id"],
-                   gamma_correct=(row["channel_r_gamma"], row["channel_g_gamma"], row["channel_b_gamma"]), from_db=True)
-
    def set_color(self, c):
        self._color = c
        for channel, gamma_correct, value in zip(self.channels, self.gamma_correct, c.clamped_rgb):
--- a/setup.py
+++ b/setup.py
@@ -25,6 +25,6 @@ setup(name='LedD',
      license='GPLv3',
      packages=['ledd'],
      install_requires=[
-            'nose', 'spectra', 'docopt', 'jsonrpc',
+            'nose', 'spectra', 'docopt', 'jsonrpc', 'sqlalchemy',
      ],
      zip_safe=False)