feat(api): Add advanced settings endpoints to api server

Fixes #1656

api/opentrons/config/advanced_settings.py

@@ -0,0 +1,127 @@
+import json
+import logging
+from copy import copy
+from opentrons.config import get_config_index
+
+log = logging.getLogger(__name__)
+
+
+class Setting:
+    def __init__(self, _id, title, description, old_id=None):
+        self.id = _id
+        self.old_id = old_id
+        self.title = title
+        self.description = description
+
+    def __repr__(self):
+        return '{}: {}'.format(self.__class__, self.id)
+
+
+settings = [
+    Setting(
+        _id='shortFixedTrash',
+        old_id='short-fixed-trash',
+        title='Short (55mm) fixed trash',
+        description='Trash box is 55mm tall (rather than the 77mm default)'
+    ),
+    Setting(
+        _id='splitLabwareDefinitions',
+        old_id='split-labware-def',
+        title='New JSON labware definitions',
+        description='JSON labware definitions with a separate def file and'
+                    ' offset file for each labware'
+    ),
+    Setting(
+        _id='calibrateToBottom',
+        old_id='calibrate-to-bottom',
+        title='Calibrate to bottom',
+        description='Calibrate using the bottom-center of well A1 for each'
+                    ' labware (rather than the top-center)'
+    ),
+    Setting(
+        _id='deckCalibrationDots',
+        old_id='dots-deck-type',
+        title='Deck calibration to dots',
+        description='Perform deck calibration to dots rather than crosses, for'
+                    ' robots that do not have crosses etched on the deck'
+    ),
+    Setting(
+        _id='disableHomeOnBoot',
+        old_id='disable-home-on-boot',
+        title='Disable home on boot',
+        description='Prevent robot from homing motors on boot'
+    )
+]
+
+settings_by_id = {s.id: s for s in settings}
+settings_by_old_id = {s.old_id: s for s in settings}
+
+
+def get_adv_setting(_id: str) -> bool:
+    _id = _clean_id(_id)
+    s = get_all_adv_settings()
+    return bool(s.get(_id))
+
+
+def get_all_adv_settings() -> dict:
+    settings_file = get_config_index().get('featureFlagFile')
+
+    values = _read_settings_file(settings_file)
+    for key, value in values.items():
+        s = copy(settings_by_id[key].__dict__)
+        s.pop('old_id')
+        values[key] = s
+        values[key]['value'] = value
+    return values
+
+
+def set_adv_setting(_id: str, value):
+    _id = _clean_id(_id)
+    settings_file = get_config_index().get('featureFlagFile')
+    s = _read_settings_file(settings_file)
+    s[_id] = value
+    _write_settings_file(s, settings_file)
+
+
+def _clean_id(_id: str) -> str:
+    if _id in settings_by_old_id.keys():
+        _id = settings_by_old_id[_id].id
+    return _id
+
+
+def _read_json_file(path: str) -> dict:
+    try:
+        with open(path, 'r') as fd:
+            data = json.load(fd)
+    except FileNotFoundError:
+        data = {}
+    return data
+
+
+def _read_settings_file(settings_file: str) -> dict:
+    # Read settings from persistent file
+    data = _read_json_file(settings_file)
+    all_ids = [s.id for s in settings]
+
+    # If any old keys are stored in the file, replace them with the new key
+    old_keys = settings_by_old_id.keys()
+    if any([k in old_keys for k in data.keys()]):
+        for v in data.keys():
+            if v in old_keys:
+                new_key = settings_by_old_id.get(v).id
+                data[new_key] = data[v]
+                data.pop(v)
+        _write_settings_file(data, settings_file)
+
+    # If any settings do not have a key in the data, default to `False`
+    res = {key: data.get(key, False) for key in all_ids}
+    return res
+
+
+def _write_settings_file(data: dict, settings_file: str):
+    try:
+        with open(settings_file, 'w') as fd:
+            json.dump(data, fd)
+    except OSError:
+        log.exception('Failed to write advanced settings file to: {}'.format(
+            settings_file))

api/opentrons/config/feature_flags.py

@@ -1,63 +1,21 @@
-import os
-import json
-from opentrons.config import get_config_index
+from opentrons.config import advanced_settings as advs
 
 
-def get_feature_flag(name: str) -> bool:
-    settings = get_all_feature_flags()
-    return bool(settings.get(name))
+def short_fixed_trash():
+    return advs.get_adv_setting('shortFixedTrash')
 
 
-def get_all_feature_flags() -> dict:
-    settings_file = get_config_index().get('featureFlagFile')
-    if settings_file and os.path.exists(settings_file):
-        with open(settings_file, 'r') as fd:
-            settings = json.load(fd)
-    else:
-        settings = {}
-    return settings
+def split_labware_definitions():
+    return advs.get_adv_setting('splitLabwareDefinitions')
 
 
-def set_feature_flag(name: str, value):
-    settings_file = get_config_index().get('featureFlagFile')
-    if os.path.exists(settings_file):
-        with open(settings_file, 'r') as fd:
-            settings = json.load(fd)
-        settings[name] = value
-    else:
-        settings = {name: value}
-    with open(settings_file, 'w') as fd:
-        json.dump(settings, fd)
+def calibrate_to_bottom():
+    return advs.get_adv_setting('calibrateToBottom')
 
 
-# short_fixed_trash
-# - True ('55.0'): Old (55mm tall) fixed trash
-# - False:         77mm tall fixed trash
-# - EOL: when all short fixed trash containers have been replaced
-def short_fixed_trash(): return get_feature_flag('short-fixed-trash')
+def dots_deck_type():
+    return advs.get_adv_setting('deckCalibrationDots')
 
 
-# split_labware_definitions
-# - True:  Use new labware definitions (See: labware_definitions.py and
-#          serializers.py)
-# - False: Use sqlite db
-def split_labware_definitions(): return get_feature_flag('split-labware-def')
-
-
-# calibrate_to_bottom
-# - True:  You must calibrate your containers to bottom
-# - False: Otherwise the default
-# will be that you calibrate to the top
-def calibrate_to_bottom(): return get_feature_flag('calibrate-to-bottom')
-
-
-# dots_deck_type
-# - True: The deck layout has etched "dots"
-# - False: The deck layout has etched "crosses"
-def dots_deck_type(): return get_feature_flag('dots-deck-type')
-
-
-# disable_home_on_boot
-# - True: The robot should not home the carriages on boot
-# - False: The robot should home the carriages on boot
-def disable_home_on_boot(): return get_feature_flag('disable-home-on-boot')
+def disable_home_on_boot():
+    return advs.get_adv_setting('disableHomeOnBoot')

api/opentrons/server/endpoints/__init__.py

@@ -3,6 +3,8 @@
 import logging
 from aiohttp import web
 from opentrons import robot, __version__
+from opentrons.config import advanced_settings as advs
+
 
 log = logging.getLogger(__name__)
 
@@ -12,7 +14,7 @@
     os.environ.get('RESIN_DEVICE_NAME_AT_INIT', 'dev'))
 
 
-async def health(request):
+async def health(request: web.Request) -> web.Response:
     res = {
         'name': NAME,
         'api_version': __version__,
@@ -21,3 +23,40 @@ async def health(request):
     return web.json_response(
         headers={'Access-Control-Allow-Origin': '*'},
         body=json.dumps(res))
+
+
+async def get_advanced_settings(request: web.Request) -> web.Response:
+    """
+    Handles a GET request and returns a json body with the key "settings" and a
+    value that is a list of objects where each object has keys "id", "title",
+    "description", and "value"
+    """
+    res = _get_adv_settings()
+    return web.json_response(res)
+
+
+def _get_adv_settings() -> dict:
+    data = advs.get_all_adv_settings()
+    return {"settings": list(data.values())}
+
+
+async def set_advanced_setting(request: web.Request) -> web.Response:
+    """
+    Handles a POST request with a json body that has keys "id" and "value",
+    where the value of "id" must correspond to an id field of a setting in
+    `opentrons.config.advanced_settings.settings`. Saves the value of "value"
+    for the setting that matches the supplied id.
+    """
+    data = await request.json()
+    key = data.get('id')
+    value = data.get('value')
+    if key and key in advs.settings_by_id.keys():
+        advs.set_adv_setting(key, value)
+        res = _get_adv_settings()
+        status = 200
+    else:
+        res = _get_adv_settings()
+        res.update(
+            {'error': 'ID {} not found in advanced settings list'.format(key)})
+        status = 400
+    return web.json_response(res, status=status)

api/opentrons/server/endpoints/serverlib_fallback.py

@@ -1,4 +1,5 @@
-# This file duplicates the implementation of ot2serverlib
+# This file duplicates the implementation of ot2serverlib. Remove once all
+# robots have new update endpoints
 import os
 import json
 import asyncio

api/opentrons/server/main.py

@@ -185,11 +185,9 @@ def init(loop=None):
     server.app.router.add_post(
         '/robot/lights', control.set_rail_lights)
     server.app.router.add_get(
-        '/settings', update.get_feature_flag)
-    server.app.router.add_get(
-        '/settings/environment', update.environment)
+        '/settings', endp.get_advanced_settings)
     server.app.router.add_post(
-        '/settings/set', update.set_feature_flag)
+        '/settings', endp.set_advanced_setting)
 
     return server.app
 

api/tests/opentrons/server/test_settings_endpoints.py

@@ -0,0 +1,36 @@
+from opentrons.server.main import init
+
+
+def validate_response_body(body):
+    settings_list = body.get('settings')
+    assert type(settings_list) == list
+    for obj in settings_list:
+        assert 'id' in obj, '"id" field not found in settings object'
+        assert 'title' in obj, '"title" not found for {}'.format(obj['id'])
+        assert 'description' in obj, '"description" not found for {}'.format(
+            obj['id'])
+        assert 'value' in obj, '"value" not found for {}'.format(obj['id'])
+
+
+async def test_get(virtual_smoothie_env, loop, test_client):
+    app = init(loop)
+    cli = await loop.create_task(test_client(app))
+
+    resp = await cli.get('/settings')
+    body = await resp.json()
+    assert resp.status == 200
+    validate_response_body(body)
+
+
+async def test_set(virtual_smoothie_env, loop, test_client):
+    app = init(loop)
+    cli = await loop.create_task(test_client(app))
+    test_id = 'disableHomeOnBoot'
+
+    resp = await cli.post('/settings', json={"id": test_id, "value": True})
+    body = await resp.json()
+    assert resp.status == 200
+    validate_response_body(body)
+    test_setting = list(
+        filter(lambda x: x.get('id') == test_id, body.get('settings')))[0]
+    assert test_setting.get('value')