From 7ccfded86837d87ca7426b289a52e2f400c74ff7 Mon Sep 17 00:00:00 2001
From: Benjamin Webb <40066515+webb-ben@users.noreply.github.com>
Date: Tue, 6 Jun 2023 17:42:58 -0400
Subject: [PATCH] Return numberMatched if in STA response (#1259)

Attempt to return `@iot.count` in included in response. Including the query param `'$count' = 'true'` is costly on the SensorThings API endpoint when accessing the Observations entity. Some STA endpoints are including the count as a default.
---
 pygeoapi/provider/sensorthings.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/pygeoapi/provider/sensorthings.py b/pygeoapi/provider/sensorthings.py
index 1aa75e3..6b497b4 100644
--- a/pygeoapi/provider/sensorthings.py
+++ b/pygeoapi/provider/sensorthings.py
@@ -249,9 +249,13 @@ class SensorThingsProvider(BaseProvider):
 
         # Make features
         response = self._get_response(url=self._url, params=params)
-        v = response.get('value')
+
+        matched = response.get('@iot.count')
+        if matched:
+            fc['numberMatched'] = matched
 
         # Query if values are less than expected
+        v = response.get('value')
         while len(v) < limit:
             try:
                 LOGGER.debug('Fetching next set of values')