fix: fixed Cache Hit Ratio and Sync Duty formula syntax

Author: cuprumtan

mamonsu/plugins/pgsql/health.py

@@ -41,10 +41,10 @@ def items(self, template, dashboard=False):
         }) + template.item({
             'name': 'PostgreSQL: cache hit ratio',
             'key': self.right_type(self.key_cache, "hit"),
-            'value_type': value_type,
+            'value_type': Plugin.VALUE_TYPE.numeric_float,
             'units': Plugin.UNITS.percent,
             'type': Plugin.TYPE.CALCULATED,
-            'params': "last(//pgsql.blocks[hit])*100/(last(//pgsql.blocks[hit])+last(//pgsql.blocks[read]))"
+            'params': "last(pgsql.blocks[hit])*100/(last(pgsql.blocks[hit])+last(pgsql.blocks[read]))"
         }) + template.item({
             'name': 'PostgreSQL: service uptime',
             'key': self.right_type(self.key_uptime),

mamonsu/plugins/pgsql/xlog.py

@@ -182,7 +182,7 @@ def items(self, template, dashboard=False):
             'value_type': Plugin.VALUE_TYPE.numeric_float,
             'units': Plugin.UNITS.percent,
             'type': Plugin.TYPE.CALCULATED,
-            'params': "last(//" + self.key_wal_sync_time + ")/10/" + self.plugin_config('interval')
+            'params': "last(" + self.key_wal_sync_time + ")/10/" + self.plugin_config('interval')
         })
         if not dashboard:
             return result