Allow stop/start home-assistant & flow of startup (#182)

* Allow config boot

* Read boot settings

* Use internal boot time for detect reboot

* Check if Home-Assistant need to watch

* Make datetime string and parse_datetime

* Add api calls

* fix lint p1

* Use new datetime parser for sessions and make a real default boot time

* fix lint p2

* only start docker if they is running

* convert to int (timestamp)

* add boot flag

API.md

@@ -283,7 +283,8 @@ Optional:
     "last_version": "LAST_VERSION",
     "devices": [""],
     "image": "str",
-    "custom": "bool -> if custom image"
+    "custom": "bool -> if custom image",
+    "boot": "bool"
 }
 ```
 
@@ -304,6 +305,8 @@ Output is the raw Docker log.
 - POST `/homeassistant/restart`
 - POST `/homeassistant/options`
 - POST `/homeassistant/check`
+- POST `/homeassistant/start`
+- POST `/homeassistant/stop`
 
 ```json
 {

hassio/api/__init__.py

@@ -72,6 +72,8 @@ class RestAPI(object):
         self.webapp.router.add_post('/homeassistant/options', api_hass.options)
         self.webapp.router.add_post('/homeassistant/update', api_hass.update)
         self.webapp.router.add_post('/homeassistant/restart', api_hass.restart)
+        self.webapp.router.add_post('/homeassistant/stop', api_hass.stop)
+        self.webapp.router.add_post('/homeassistant/start', api_hass.start)
         self.webapp.router.add_post('/homeassistant/check', api_hass.check)
 
     def register_addons(self, addons):

hassio/api/homeassistant.py

@@ -7,14 +7,16 @@ import voluptuous as vol
 from .util import api_process, api_process_raw, api_validate
 from ..const import (
     ATTR_VERSION, ATTR_LAST_VERSION, ATTR_DEVICES, ATTR_IMAGE, ATTR_CUSTOM,
-    CONTENT_TYPE_BINARY)
+    ATTR_BOOT, CONTENT_TYPE_BINARY)
 from ..validate import HASS_DEVICES
 
 _LOGGER = logging.getLogger(__name__)
 
 
+# pylint: disable=no-value-for-parameter
 SCHEMA_OPTIONS = vol.Schema({
     vol.Optional(ATTR_DEVICES): HASS_DEVICES,
+    vol.Optional(ATTR_BOOT): vol.Boolean(),
     vol.Inclusive(ATTR_IMAGE, 'custom_hass'): vol.Any(None, vol.Coerce(str)),
     vol.Inclusive(ATTR_LAST_VERSION, 'custom_hass'):
         vol.Any(None, vol.Coerce(str)),
@@ -43,6 +45,7 @@ class APIHomeAssistant(object):
             ATTR_IMAGE: self.homeassistant.image,
             ATTR_DEVICES: self.homeassistant.devices,
             ATTR_CUSTOM: self.homeassistant.is_custom_image,
+            ATTR_BOOT: self.homeassistant.boot,
         }
 
     @api_process
@@ -57,6 +60,9 @@ class APIHomeAssistant(object):
             self.homeassistant.set_custom(
                 body[ATTR_IMAGE], body[ATTR_LAST_VERSION])
 
+        if ATTR_BOOT in body:
+            self.homeassistant.boot = body[ATTR_BOOT]
+
         return True
 
     @api_process
@@ -71,6 +77,16 @@ class APIHomeAssistant(object):
         return await asyncio.shield(
             self.homeassistant.update(version), loop=self.loop)
 
+    @api_process
+    def stop(self, request):
+        """Stop homeassistant."""
+        return asyncio.shield(self.homeassistant.stop(), loop=self.loop)
+
+    @api_process
+    def start(self, request):
+        """Start homeassistant."""
+        return asyncio.shield(self.homeassistant.run(), loop=self.loop)
+
     @api_process
     def restart(self, request):
         """Restart homeassistant."""

hassio/config.py

@@ -7,14 +7,12 @@ from pathlib import Path, PurePath
 from .const import (
     FILE_HASSIO_CONFIG, HASSIO_DATA, ATTR_SECURITY, ATTR_SESSIONS,
     ATTR_PASSWORD, ATTR_TOTP, ATTR_TIMEZONE, ATTR_ADDONS_CUSTOM_LIST,
-    ATTR_AUDIO_INPUT, ATTR_AUDIO_OUTPUT)
-from .tools import JsonConfig
+    ATTR_AUDIO_INPUT, ATTR_AUDIO_OUTPUT, ATTR_LAST_BOOT)
+from .tools import JsonConfig, parse_datetime
 from .validate import SCHEMA_HASSIO_CONFIG
 
 _LOGGER = logging.getLogger(__name__)
 
-DATETIME_FORMAT = "%Y%m%d %H:%M:%S"
-
 HOMEASSISTANT_CONFIG = PurePath("homeassistant")
 
 HASSIO_SSL = PurePath("ssl")
@@ -28,6 +26,8 @@ BACKUP_DATA = PurePath("backup")
 SHARE_DATA = PurePath("share")
 TMP_DATA = PurePath("tmp")
 
+DEFAULT_BOOT_TIME = datetime.utcfromtimestamp(0).isoformat()
+
 
 class CoreConfig(JsonConfig):
     """Hold all core config data."""
@@ -48,6 +48,22 @@ class CoreConfig(JsonConfig):
         self._data[ATTR_TIMEZONE] = value
         self.save()
 
+    @property
+    def last_boot(self):
+        """Return last boot datetime."""
+        boot_str = self._data.get(ATTR_LAST_BOOT, DEFAULT_BOOT_TIME)
+
+        boot_time = parse_datetime(boot_str)
+        if not boot_time:
+            return datetime.utcfromtimestamp(1)
+        return boot_time
+
+    @last_boot.setter
+    def last_boot(self, value):
+        """Set last boot datetime."""
+        self._data[ATTR_LAST_BOOT] = value.isoformat()
+        self.save()
+
     @property
     def path_hassio(self):
         """Return hassio data path."""
@@ -191,14 +207,14 @@ class CoreConfig(JsonConfig):
     def security_sessions(self):
         """Return api sessions."""
         return {
-            session: datetime.strptime(until, DATETIME_FORMAT) for
+            session: parse_datetime(until) for
             session, until in self._data[ATTR_SESSIONS].items()
         }
 
     def add_security_session(self, session, valid):
         """Set the a new session."""
         self._data[ATTR_SESSIONS].update(
-            {session: valid.strftime(DATETIME_FORMAT)}
+            {session: valid.isoformat()}
         )
         self.save()
 

hassio/const.py

@@ -61,6 +61,7 @@ ATTR_SOURCE = 'source'
 ATTR_FEATURES = 'features'
 ATTR_ADDONS = 'addons'
 ATTR_VERSION = 'version'
+ATTR_LAST_BOOT = 'last_boot'
 ATTR_LAST_VERSION = 'last_version'
 ATTR_BETA_CHANNEL = 'beta_channel'
 ATTR_NAME = 'name'

hassio/core.py

@@ -142,7 +142,7 @@ class HassIO(object):
 
         try:
             # HomeAssistant is already running / supervisor have only reboot
-            if await self.homeassistant.is_running():
+            if self.hardware.last_boot == self.config.last_boot:
                 _LOGGER.info("HassIO reboot detected")
                 return
 
@@ -153,11 +153,15 @@ class HassIO(object):
             await self.addons.auto_boot(STARTUP_SERVICES)
 
             # run HomeAssistant
-            await self.homeassistant.run()
+            if self.homeassistant.boot:
+                await self.homeassistant.run()
 
             # start addon mark as application
             await self.addons.auto_boot(STARTUP_APPLICATION)
 
+            # store new last boot
+            self.config.last_boot = self.hardware.last_boot
+
         finally:
             # schedule homeassistant watchdog
             self.scheduler.register_task(

hassio/dock/homeassistant.py

@@ -1,6 +1,8 @@
 """Init file for HassIO docker object."""
 import logging
 
+import docker
+
 from .interface import DockerInterface
 
 _LOGGER = logging.getLogger(__name__)
@@ -93,3 +95,19 @@ class DockerHomeAssistant(DockerInterface):
                     {'bind': '/ssl', 'mode': 'ro'},
             }
         )
+
+    def is_initialize(self):
+        """Return True if docker container exists."""
+        return self.loop.run_in_executor(None, self._is_initialize)
+
+    def _is_initialize(self):
+        """Return True if docker container exists.
+
+        Need run inside executor.
+        """
+        try:
+            self.docker.containers.get(self.name)
+        except docker.errors.DockerException:
+            return False
+
+        return True

hassio/hardware.py

@@ -1,4 +1,5 @@
 """Read hardware info from system."""
+from datetime import datetime
 import logging
 from pathlib import Path
 import re
@@ -15,6 +16,9 @@ RE_CARDS = re.compile(r"(\d+) \[(\w*) *\]: (.*\w)")
 ASOUND_DEVICES = Path("/proc/asound/devices")
 RE_DEVICES = re.compile(r"\[.*(\d+)- (\d+).*\]: ([\w ]*)")
 
+PROC_STAT = Path("/proc/stat")
+RE_BOOT_TIME = re.compile(r"btime (\d+)")
+
 
 class Hardware(object):
     """Represent a interface to procfs, sysfs and udev."""
@@ -85,3 +89,21 @@ class Hardware(object):
                 continue
 
         return audio_list
+
+    @property
+    def last_boot(self):
+        """Return last boot time."""
+        try:
+            with PROC_STAT.open("r") as stat_file:
+                stats = stat_file.read()
+        except OSError as err:
+            _LOGGER.error("Can't read stat data -> %s", err)
+            return
+
+        # parse stat file
+        found = RE_BOOT_TIME.search(stats)
+        if not found:
+            _LOGGER.error("Can't found last boot time!")
+            return
+
+        return datetime.utcfromtimestamp(int(found.group(1)))

hassio/homeassistant.py

@@ -6,7 +6,7 @@ import re
 
 from .const import (
     FILE_HASSIO_HOMEASSISTANT, ATTR_DEVICES, ATTR_IMAGE, ATTR_LAST_VERSION,
-    ATTR_VERSION)
+    ATTR_VERSION, ATTR_BOOT)
 from .dock.homeassistant import DockerHomeAssistant
 from .tools import JsonConfig, convert_to_ascii
 from .validate import SCHEMA_HASS_CONFIG
@@ -73,6 +73,17 @@ class HomeAssistant(JsonConfig):
         self._data[ATTR_DEVICES] = value
         self.save()
 
+    @property
+    def boot(self):
+        """Return True if home-assistant boot is enabled."""
+        return self._data[ATTR_BOOT]
+
+    @boot.setter
+    def boot(self, value):
+        """Set home-assistant boot options."""
+        self._data[ATTR_BOOT] = value
+        self.save()
+
     def set_custom(self, image, version):
         """Set a custom image for homeassistant."""
         # reset
@@ -119,6 +130,7 @@ class HomeAssistant(JsonConfig):
     async def update(self, version=None):
         """Update HomeAssistant version."""
         version = version or self.last_version
+        running = await self.docker.is_running()
 
         if version == self.docker.version:
             _LOGGER.warning("Version %s is already installed", version)
@@ -127,7 +139,8 @@ class HomeAssistant(JsonConfig):
         try:
             return await self.docker.update(version)
         finally:
-            await self.docker.run()
+            if running:
+                await self.docker.run()
 
     def run(self):
         """Run HomeAssistant docker.
@@ -164,6 +177,13 @@ class HomeAssistant(JsonConfig):
         """
         return self.docker.is_running()
 
+    def is_initialize(self):
+        """Return True if a docker container is exists.
+
+        Return a coroutine.
+        """
+        return self.docker.is_initialize()
+
     @property
     def in_progress(self):
         """Return True if a task is in progress."""

hassio/tasks.py

@@ -66,6 +66,11 @@ def homeassistant_watchdog(loop, homeassistant):
     """Create scheduler task for montoring running state."""
     async def _homeassistant_watchdog():
         """Check running state and start if they is close."""
+        # if Home-Assistant is active
+        if not await homeassistant.is_initialize():
+            return
+
+        # If Home-Assistant is running
         if homeassistant.in_progress or await homeassistant.is_running():
             return
 

hassio/tools.py

@@ -1,13 +1,14 @@
 """Tools file for HassIO."""
 import asyncio
 from contextlib import suppress
-from datetime import datetime
+from datetime import datetime, timedelta, timezone
 import json
 import logging
 import re
 
 import aiohttp
 import async_timeout
+import pytz
 import voluptuous as vol
 from voluptuous.humanize import humanize_error
 
@@ -17,6 +18,16 @@ FREEGEOIP_URL = "https://freegeoip.io/json/"
 
 RE_STRING = re.compile(r"\x1b(\[.*?[@-~]|\].*?(\x07|\x1b\\))")
 
+# Copyright (c) Django Software Foundation and individual contributors.
+# All rights reserved.
+# https://github.com/django/django/blob/master/LICENSE
+DATETIME_RE = re.compile(
+    r'(?P<year>\d{4})-(?P<month>\d{1,2})-(?P<day>\d{1,2})'
+    r'[T ](?P<hour>\d{1,2}):(?P<minute>\d{1,2})'
+    r'(?::(?P<second>\d{1,2})(?:\.(?P<microsecond>\d{1,6})\d{0,6})?)?'
+    r'(?P<tzinfo>Z|[+-]\d{2}(?::?\d{2})?)?$'
+)
+
 
 def write_json_file(jsonfile, data):
     """Write a json file."""
@@ -53,6 +64,42 @@ def convert_to_ascii(raw):
     return RE_STRING.sub("", raw.decode())
 
 
+# Copyright (c) Django Software Foundation and individual contributors.
+# All rights reserved.
+# https://github.com/django/django/blob/master/LICENSE
+def parse_datetime(dt_str):
+    """Parse a string and return a datetime.datetime.
+
+    This function supports time zone offsets. When the input contains one,
+    the output uses a timezone with a fixed offset from UTC.
+    Raises ValueError if the input is well formatted but not a valid datetime.
+    Returns None if the input isn't well formatted.
+    """
+    match = DATETIME_RE.match(dt_str)
+    if not match:
+        return None
+    kws = match.groupdict()  # type: Dict[str, Any]
+    if kws['microsecond']:
+        kws['microsecond'] = kws['microsecond'].ljust(6, '0')
+    tzinfo_str = kws.pop('tzinfo')
+
+    tzinfo = None  # type: Optional[dt.tzinfo]
+    if tzinfo_str == 'Z':
+        tzinfo = pytz.utc
+    elif tzinfo_str is not None:
+        offset_mins = int(tzinfo_str[-2:]) if len(tzinfo_str) > 3 else 0
+        offset_hours = int(tzinfo_str[1:3])
+        offset = timedelta(hours=offset_hours, minutes=offset_mins)
+        if tzinfo_str[0] == '-':
+            offset = -offset
+        tzinfo = timezone(offset)
+    else:
+        tzinfo = None
+    kws = {k: int(v) for k, v in kws.items() if v is not None}
+    kws['tzinfo'] = tzinfo
+    return datetime(**kws)
+
+
 class JsonConfig(object):
     """Hass core object for handle it."""
 

hassio/validate.py

@@ -7,7 +7,7 @@ from .const import (
     ATTR_DEVICES, ATTR_IMAGE, ATTR_LAST_VERSION, ATTR_SESSIONS, ATTR_PASSWORD,
     ATTR_TOTP, ATTR_SECURITY, ATTR_BETA_CHANNEL, ATTR_TIMEZONE,
     ATTR_ADDONS_CUSTOM_LIST, ATTR_AUDIO_OUTPUT, ATTR_AUDIO_INPUT,
-    ATTR_HOMEASSISTANT, ATTR_HASSIO)
+    ATTR_HOMEASSISTANT, ATTR_HASSIO, ATTR_BOOT, ATTR_LAST_BOOT)
 
 
 NETWORK_PORT = vol.All(vol.Coerce(int), vol.Range(min=1, max=65535))
@@ -55,8 +55,10 @@ DOCKER_PORTS = vol.Schema({
 })
 
 
+# pylint: disable=no-value-for-parameter
 SCHEMA_HASS_CONFIG = vol.Schema({
     vol.Optional(ATTR_DEVICES, default=[]): HASS_DEVICES,
+    vol.Optional(ATTR_BOOT, default=True): vol.Boolean(),
     vol.Inclusive(ATTR_IMAGE, 'custom_hass'): vol.Coerce(str),
     vol.Inclusive(ATTR_LAST_VERSION, 'custom_hass'): vol.Coerce(str),
 })
@@ -73,6 +75,7 @@ SCHEMA_UPDATER_CONFIG = vol.Schema({
 # pylint: disable=no-value-for-parameter
 SCHEMA_HASSIO_CONFIG = vol.Schema({
     vol.Optional(ATTR_TIMEZONE, default='UTC'): validate_timezone,
+    vol.Optional(ATTR_LAST_BOOT): vol.Coerce(str),
     vol.Optional(ATTR_ADDONS_CUSTOM_LIST, default=[]): [vol.Url()],
     vol.Optional(ATTR_SECURITY, default=False): vol.Boolean(),
     vol.Optional(ATTR_TOTP): vol.Coerce(str),