Add filtering by area and label

check_home_assistant_state.py

@@ -4,15 +4,16 @@
 
 import argparse
 import dataclasses
+import json
 import logging
 import re
 import sys
-from urllib.parse import urljoin
-from typing import Optional
 from pathlib import Path
+from typing import Any
+from urllib.parse import urljoin
 
-import requests
 import nagiosplugin
+import requests
 
 _log = logging.getLogger("nagiosplugin")
 
@@ -60,9 +61,6 @@ class AttributeFilter:
         else:
             return cls(k, v, False)
 
-    def check(self, attributes: dict[str, str]) -> bool:
-        return self.negated ^ (attributes.get(self.attribute) == self.value)
-
 
 @dataclasses.dataclass
 class Entities(nagiosplugin.Resource):
@@ -70,16 +68,18 @@ class Entities(nagiosplugin.Resource):
     token: str
     device_class: str
     numeric: bool
+    area: str
+    label: str
     filters: list[AttributeFilter]
-    attribute: Optional[str]
+    attribute: str | None
     friendly_name: bool
     ignore_missing: bool
     include: list[str]
     exclude: list[str]
-    min: Optional[float] = None
-    max: Optional[float] = None
+    min: float | None = None
+    max: float | None = None
 
-    def hass_get(self, endpoint: str) -> requests.Response:
+    def hass_get(self, endpoint: str) -> Any:
         headers = {
             "Authorization": "Bearer " + self.token,
             "Content-Type": "application/json",
@@ -91,6 +91,18 @@ class Entities(nagiosplugin.Resource):
 
         return r.json()
 
+    def hass_post(self, endpoint: str, data: Any) -> Any:
+        headers = {
+            "Authorization": "Bearer " + self.token,
+            "Content-Type": "application/json",
+        }
+
+        r = requests.post(urljoin(self.url, endpoint), headers=headers, json=data)
+        if not r.ok:
+            raise Exception("Failed to query Home Assistant API: " + r.text)
+
+        return r.json()
+
     def check_api(self):
         message = self.hass_get("/api/").get("message")
         if message != "API running.":
@@ -136,14 +148,47 @@ class Entities(nagiosplugin.Resource):
         )
 
     def probe(self):
-        response = self.hass_get("/api/states")
+        template_filter = f"states|selectattr('attributes.device_class', 'eq', '{ self.device_class }')"
+        for f in self.filters:
+            op = "ne" if f.negated else "eq"
+            template_filter += (
+                f"|selectattr('attributes.{ f.attribute }', '{ op }', '{ f.value }')"
+            )
+
+        if self.area:
+            template_filter += (
+                f"|selectattr('entity_id', 'in', area_entities('{ self.area }'))"
+            )
+        if self.label:
+            template_filter += (
+                f"|selectattr('entity_id', 'in', label_entities('{ self.label }'))"
+            )
+
+        if self.exclude:
+            template_filter += (
+                f"|rejectattr('entity_id', 'in', { json.dumps(self.exclude) })"
+            )
+        if self.include:
+            template_filter = (
+                f"({template_filter}|list + "
+                f" states|selectattr('entity_id', 'in', { json.dumps(self.include) })|list"
+                ")|unique(attribute='entity_id')"
+            )
+        template = (
+            "{% set ns = namespace(out=[]) %}\n"
+            f"{{% for s in { template_filter } %}}\n"
+            "  {% set ns.out = ns.out + [{\n"
+            '    "entity_id": s.entity_id,\n'
+            '    "state": s.state,\n'
+            '    "attributes": s.attributes,\n'
+            "  }]\n"
+            "  %}\n"
+            "{% endfor %}\n"
+            "{{ ns.out|tojson }}"
+        )
+
+        response = self.hass_post("/api/template", {"template": template})
         for state in response:
-            if (
-                state["attributes"].get("device_class") == self.device_class
-                and all(filter.check(state["attributes"]) for filter in self.filters)
-                and (len(self.include) == 0 or state["entity_id"] in self.include)
-                and state["entity_id"] not in self.exclude
-            ):
             yield from self._state_to_metric(state)
 
 
@@ -151,9 +196,9 @@ class RegexContext(nagiosplugin.Context):
     def __init__(
         self,
         name: str,
-        ok: str = None,
-        warning: str = None,
-        critical: str = None,
+        ok: str | None = None,
+        warning: str | None = None,
+        critical: str | None = None,
         fmt_metric=None,
         result_cls=nagiosplugin.Result,
     ):
@@ -207,7 +252,7 @@ class Icinga2ConfAction(argparse.Action):
         self,
         param_prefix: str,
         parser: argparse.ArgumentParser,
-        order: Optional[int] = None,
+        order: int | None = None,
     ):
         for action in parser._actions:
             if action.dest in [self.dest, "help", "version"] or isinstance(
@@ -329,6 +374,8 @@ def main():
         action="extend",
         help="explicitly include entities by id. Other entities will not be considered if this is specified. Listed entities must also match the specified device class",
     )
+    common_args.add_argument("--area", type=str, help="area to filter by")
+    common_args.add_argument("--label", type=str, help="label to filter by")
     common_args.add_argument(
         "-e",
         "--exclude",
@@ -405,6 +452,8 @@ def main():
         "device_class": args.device_class,
         "attribute": args.attribute,
         "filters": args.filter,
+        "area": args.area,
+        "label": args.label,
         "include": args.include,
         "exclude": args.exclude,
         "friendly_name": args.friendly,

pyproject.toml

@@ -1 +1,6 @@
-[tool.black]
+[tool.ruff]
+line-length = 88
+
+[tool.ruff.lint]
+select = ["E4", "E7", "E9", "F", "I", "C4", "UP", "PERF", "PL", "SIM"]
+