First step of the migration

README.rst

@@ -101,8 +101,10 @@ Optional dependencies:
 - ``hddtemp`` (for HDD temperature monitoring support) [Linux-only]
 - ``influxdb`` (for the InfluxDB version 1 export module)
 - ``influxdb-client``  (for the InfluxDB version 2 export module)
+- ``jinja2`` (for templating, used under the hood by FastAPI)
 - ``kafka-python`` (for the Kafka export module)
 - ``netifaces`` (for the IP plugin)
+- ``orjson`` (fast JSON library, used under the hood by FastAPI)
 - ``py3nvml`` (for the GPU plugin)
 - ``pycouchdb`` (for the CouchDB export module)
 - ``pika`` (for the RabbitMQ/ActiveMQ export module)
@@ -319,7 +321,7 @@ Start Termux on your device and enter:
     $ apt update
     $ apt upgrade
     $ apt install clang python
-    $ pip install fastapi uvicorn
+    $ pip install fastapi uvicorn orjson jinja2
     $ pip install glances
 
 And start Glances:

glances/globals.py

@@ -315,10 +315,10 @@ def json_dumps(data):
         return ujson.dumps(data, ensure_ascii=False)
 
 
-def json_dumps_dictlist(data, item):
+def dictlist(data, item):
     if isinstance(data, dict):
         try:
-            return json_dumps({item: data[item]})
+            return {item: data[item]}
         except (TypeError, IndexError, KeyError):
             return None
     elif isinstance(data, list):
@@ -326,13 +326,21 @@ def json_dumps_dictlist(data, item):
             # Source:
             # http://stackoverflow.com/questions/4573875/python-get-index-of-dictionary-item-in-list
             # But https://github.com/nicolargo/glances/issues/1401
-            return json_dumps({item: list(map(itemgetter(item), data))})
+            return {item: list(map(itemgetter(item), data))}
         except (TypeError, IndexError, KeyError):
             return None
     else:
         return None
 
 
+def json_dumps_dictlist(data, item):
+    dl = dictlist(data, item)
+    if dl is None:
+        return None
+    else:
+        return json_dumps(dl)
+
+
 def string_value_to_float(s):
     """Convert a string with a value and an unit to a float.
     Example:

glances/main.py

@@ -363,7 +363,7 @@ Examples of use:
             action='store_true',
             default=False,
             dest='webserver',
-            help='run Glances in web server mode (FastAPI and Uvicorn lib needed)',
+            help='run Glances in web server mode (FastAPI, Uvicorn, Jinja2 and OrJsonLib needed)',
         )
         parser.add_argument(
             '--cached-time',

glances/plugins/plugin/model.py

@@ -16,7 +16,7 @@ I am your father...
 import re
 import copy
 
-from glances.globals import iterkeys, itervalues, listkeys, mean, nativestr, json_dumps, json_dumps_dictlist
+from glances.globals import iterkeys, itervalues, listkeys, mean, nativestr, json_dumps, json_dumps_dictlist, dictlist
 from glances.actions import GlancesActions
 from glances.history import GlancesHistory
 from glances.logger import logger
@@ -395,6 +395,13 @@ class GlancesPluginModel(object):
         """Return the stats object in JSON format."""
         return self.get_stats()
 
+    def get_raw_stats_item(self, item):
+        """Return the stats object for a specific item in RAW format.
+
+        Stats should be a list of dict (processlist, network...)
+        """
+        return dictlist(self.stats, item)
+
     def get_stats_item(self, item):
         """Return the stats object for a specific item in JSON format.
 
@@ -402,8 +409,8 @@ class GlancesPluginModel(object):
         """
         return json_dumps_dictlist(self.stats, item)
 
-    def get_stats_value(self, item, value):
-        """Return the stats object for a specific item=value in JSON format.
+    def get_raw_stats_value(self, item, value):
+        """Return the stats object for a specific item=value.
 
         Stats should be a list of dict (processlist, network...)
         """
@@ -413,11 +420,22 @@ class GlancesPluginModel(object):
             if not isinstance(value, int) and value.isdigit():
                 value = int(value)
             try:
-                return json_dumps({value: [i for i in self.stats if i[item] == value]})
+                return {value: [i for i in self.stats if i[item] == value]}
             except (KeyError, ValueError) as e:
                 logger.error("Cannot get item({})=value({}) ({})".format(item, value, e))
                 return None
 
+    def get_stats_value(self, item, value):
+        """Return the stats object for a specific item=value in JSON format.
+
+        Stats should be a list of dict (processlist, network...)
+        """
+        rsv = self.get_raw_stats_value(item, value)
+        if rsv is None:
+            return None
+        else:
+            return json_dumps(rsv)
+
     def update_views_hidden(self):
         """Update the hidden views
 

optional-requirements.txt

@@ -12,8 +12,10 @@ graphitesender
 hddtemp
 influxdb>=1.0.0 # For InfluxDB < 1.8
 influxdb-client; python_version >= "3.7" # For InfluxDB >= 1.8
+jinja2
 kafka-python
 netifaces
+orjson; python_version >= "3.8"
 packaging; python_version >= "3.7"
 paho-mqtt
 pika

setup.py

@@ -46,6 +46,8 @@ def get_install_requires():
     if sys.platform.startswith('win'):
         requires.append('fastapi')
         requires.append('uvicorn')
+        requires.append('orjson')
+        requires.append('jinja2')
         requires.append('requests')
 
     return requires
@@ -68,7 +70,7 @@ def get_install_extras_require():
         'smart': ['pySMART.smartx'],
         'snmp': ['pysnmp'],
         'sparklines': ['sparklines'],
-        'web': ['fastapi', 'uvicorn', 'requests'],
+        'web': ['fastapi', 'uvicorn', 'jinja2', 'orjson', 'requests'],
         'wifi': ['wifi']
     }
     if sys.platform.startswith('linux'):

snap/snapcraft.yaml

@@ -76,6 +76,28 @@ parts:
     organize:
       uvicorn-dist: uvicorn/dist
 
+  orjson:
+    plugin: python
+    source: https://github.com/ijl/orjson.git
+    source-tag: '3.9.10'
+    source-depth: 1
+    override-build: |
+      mkdir -p $SNAPCRAFT_PART_BUILD/dist
+      cp -r $SNAPCRAFT_PART_BUILD/dist $SNAPCRAFT_PART_INSTALL/orjson-dist
+    organize:
+      orjson-dist: orjson/dist
+
+  jinja2:
+    plugin: python
+    source: https://github.com/pallets/jinja.git
+    source-tag: '3.1.2'
+    source-depth: 1
+    override-build: |
+      mkdir -p $SNAPCRAFT_PART_BUILD/dist
+      cp -r $SNAPCRAFT_PART_BUILD/dist $SNAPCRAFT_PART_INSTALL/jinja2-dist
+    organize:
+      jinja2-dist: jinja2/dist
+
   docker:
     plugin: python
     source: https://github.com/docker/docker-py.git

tox.ini

@@ -21,6 +21,8 @@ deps =
     ujson
     fastapi
     uvicorn
+    orjson
+    jinja2
     requests
 commands =
     python unitest.py

webui-requirements.txt

@@ -3,3 +3,5 @@
 
 fastapi; python_version >= "3.8"
 uvicorn; python_version >= "3.8"
+orjson; python_version >= "3.8"
+jinja2