Fixed Issue #29 for not existing volume grups

flasharray_collector/flasharray_metrics/host_volume_metrics.py

@@ -0,0 +1,23 @@
+from prometheus_client.core import GaugeMetricFamily
+
+
+class HostVolumeMetrics():
+    """
+    Base class for mapping FlashArray hosts to connected volumes
+    """
+
+    def __init__(self, fa):
+        self.fa = fa
+        self.map_host_vol = GaugeMetricFamily('purefa_host_volumes_info',
+                                              'FlashArray host volumes connections',
+                                              labels=['host', 'naaid'])
+
+    def _map_host_vol(self):
+        for hv in self.fa.get_host_volumes():
+            self.map_host_vol.add_metric([hv['host'], hv['naaid']], 1)
+
+
+
+    def get_metrics(self):
+        self._map_host_vol()
+        yield self.map_host_vol