self-defining pattern for Value type

src/metrics.rs

@@ -2,6 +2,8 @@ use crate::structs::v3::MetricOutput;
 use serde_json::{Map, Value};
 use prometheus::Gauge;
 use tracing::error;
+use prometheus::Opts;
+use prometheus::GaugeVec;
 
 #[derive(Debug)]
 pub enum MetricsValueType { 
@@ -32,6 +34,8 @@ impl MetricsProcesser {
         }
         MetricsValueType::None
     }
+
+    // TODO: i64 and f63 support
     pub fn gauge_from_number(
         metric: &MetricOutput,
         metric_name: &str,
@@ -102,9 +106,6 @@ impl MetricsProcesser {
                             metric_value = value.as_f64().unwrap_or(0.0)
                         }
                     });
-                use prometheus::Opts;
-                use prometheus::GaugeVec;
-
                 let opts = Opts::new(&name, &help);
                 let gauge_vec = GaugeVec::new(opts, &[&label_name]);
                 match gauge_vec {
@@ -177,4 +178,19 @@ impl MetricsProcesser {
         metrics
             .value.is_number()
     }
+}
+
+
+
+trait IsTaggedArray {
+    fn is_tagged_array(&self) -> bool;
+}
+
+impl IsTaggedArray for Value {
+    fn is_tagged_array(&self) -> bool {
+        if let Some(arr) = self.as_array() {
+            return arr[0].get("tag_name").is_some();
+        }
+        false
+    }
 }