Change scapedMetricsNameCache method to support `/` (#10349)

docs/en/changes/changes.md

@@ -88,6 +88,7 @@
 * Remove handler scan in otel receiver, manual initialization instead
 * Add aws-firehose-receiver to support collecting AWS CloudWatch metric(OpenTelemetry format)
 * Avoid Antlr dependencies' versions might be different in compile time and runtime.
+* Now `PrometheusMetricConverter#escapedName` also support converting `/` to `_`.
 
 #### UI
 

oap-server/analyzer/meter-analyzer/src/main/java/org/apache/skywalking/oap/meter/analyzer/prometheus/PrometheusMetricConverter.java

@@ -71,7 +71,7 @@ public class PrometheusMetricConverter {
 
     public PrometheusMetricConverter(Rule rule, MeterSystem service) {
         this.convert = new MetricConvert(rule, service);
-        this.metricsNameEscapePattern = Pattern.compile("\\.");
+        this.metricsNameEscapePattern = Pattern.compile("[/.]");
     }
 
     /**
@@ -160,7 +160,7 @@ public class PrometheusMetricConverter {
         return Optional.of(Tuple.of(escapedName(metric.getName()), SampleFamilyBuilder.newBuilder(ss).build()));
     }
 
-    // Returns the escaped name of the given one, with "." replaced by "_"
+    // Returns the escaped name of the given one, with "." and "/" replaced by "_"
     protected String escapedName(final String name) {
         try {
             return escapedMetricsNameCache.get(name);