Update CentreonAPI.py (#1084)

* Update CentreonAPI.py

add hosts and services filters to the API request in order to reduce network traffic when there is large number of non ok services which your are not accoutable

* Update CentreonAPI.py

Error in reverse parameter

* Update CentreonAPI.py

change search filter in order to match with CQL criteria

Nagstamon/Servers/Centreon/CentreonAPI.py

@@ -315,16 +315,30 @@ def _get_status(self):
                     result.error = 'Connection error'
                 return result
 
+        # filter regexep to reduce network traffic
+        # waiting to find a solution to reverse regexp
+        # my first idea is 
+        # begin by (^(?!(.*
+        # ending by )))
+        # replace | by )))(^(?!(.*
+        # replace )( by )|(
+        self.re_service_filter = ''
+        self.re_host_filter = ''
+        if conf.re_service_enabled is True and conf.re_service_reverse is True:
+            self.re_service_filter = '&search={"s.description":{"$rg":"' + str(conf.re_service_pattern) + '"}}'
+        if conf.re_host_enabled is True and conf.re_host_reverse is True:
+            self.re_host_filter = '&search={"h.name":{"$rg":"' + str(conf.re_host_pattern) + '"}}'
+
         # Services URL
         # https://demo.centreon.com/centreon/api/latest/monitoring/resources?page=1&limit=30&sort_by={"status_severity_code":"asc","last_status_change":"desc"}&types=["service"]&statuses=["WARNING","DOWN","CRITICAL","UNKNOWN"]
         url_services = self.urls_centreon[
-                           'services'] + '?types=["metaservice","service"]&statuses=["WARNING","DOWN","CRITICAL","UNKNOWN"]&limit=' + str(
+                           'services'] + '?types=["metaservice","service"]&statuses=["WARNING","DOWN","CRITICAL","UNKNOWN"]' + self.re_service_filter + '&limit=' + str(
             self.limit_services_number)
 
         # Hosts URL
         # https://demo.centreon.com/centreon/api/latest/monitoring/resources?page=1&limit=30&sort_by={"status_severity_code":"asc","last_status_change":"desc"}&types=["host"]&statuses=["WARNING","DOWN","CRITICAL","UNKNOWN"]
         url_hosts = self.urls_centreon[
-                        'hosts'] + '?types=["host"]&statuses=["WARNING","DOWN","CRITICAL","UNKNOWN"]&limit=' + str(
+                        'hosts'] + '?types=["host"]&statuses=["WARNING","DOWN","CRITICAL","UNKNOWN"]' + self.re_host_filter + '&limit=' + str(
             self.limit_services_number)
 
         # Hosts