[all] OpenTelemetry metrics integration in venice-router

internal/venice-client-common/src/main/java/com/linkedin/venice/stats/dimensions/RequestRetryAbortReason.java

@@ -1,13 +1,12 @@
 package com.linkedin.venice.stats.dimensions;
 
 public enum RequestRetryAbortReason {
-  SLOW_ROUTE("slow_route"), DELAY_CONSTRAINT("delay_constraint"), MAX_RETRY_ROUTE_LIMIT("max_retry_router_limit"),
-  NO_AVAILABLE_REPLICA("no_available_replica");
+  SLOW_ROUTE, DELAY_CONSTRAINT, MAX_RETRY_ROUTE_LIMIT, NO_AVAILABLE_REPLICA;
 
   private final String abortReason;
 
-  RequestRetryAbortReason(String abortReason) {
-    this.abortReason = abortReason;
+  RequestRetryAbortReason() {
+    this.abortReason = name().toLowerCase();
   }
 
   public String getAbortReason() {

internal/venice-client-common/src/main/java/com/linkedin/venice/stats/dimensions/RequestRetryType.java

@@ -1,12 +1,12 @@
 package com.linkedin.venice.stats.dimensions;
 
 public enum RequestRetryType {
-  ERROR_RETRY("error_retry"), LONG_TAIL_RETRY("long_tail_retry");
+  ERROR_RETRY, LONG_TAIL_RETRY;
 
   private final String retryType;
 
-  RequestRetryType(String retryType) {
-    this.retryType = retryType;
+  RequestRetryType() {
+    this.retryType = name().toLowerCase();
   }
 
   public String getRetryType() {

internal/venice-client-common/src/main/java/com/linkedin/venice/stats/dimensions/RequestValidationOutcome.java

@@ -1,12 +1,12 @@
 package com.linkedin.venice.stats.dimensions;
 
 public enum RequestValidationOutcome {
-  VALID("valid"), INVALID_KEY_COUNT_LIMIT_EXCEEDED("invalid_key_count_limit_exceeded");
+  VALID, INVALID_KEY_COUNT_LIMIT_EXCEEDED;
 
   private final String outcome;
 
-  RequestValidationOutcome(String outcome) {
-    this.outcome = outcome;
+  RequestValidationOutcome() {
+    this.outcome = name().toLowerCase();
   }
 
   public String getOutcome() {

internal/venice-client-common/src/main/java/com/linkedin/venice/stats/dimensions/VeniceResponseStatusCategory.java

@@ -8,12 +8,12 @@
  * to account for all healthy requests. This dimensions makes it easier to make Venice specific aggregations.
  */
 public enum VeniceResponseStatusCategory {
-  HEALTHY("healthy"), UNHEALTHY("unhealthy"), TARDY("tardy"), THROTTLED("throttled"), BAD_REQUEST("bad_request");
+  HEALTHY, UNHEALTHY, TARDY, THROTTLED, BAD_REQUEST;
 
   private final String category;
 
-  VeniceResponseStatusCategory(String category) {
-    this.category = category;
+  VeniceResponseStatusCategory() {
+    this.category = name().toLowerCase();
   }
 
   public String getCategory() {

internal/venice-client-common/src/test/java/com/linkedin/venice/stats/dimensions/RequestRetryAbortReasonTest.java

@@ -17,7 +17,7 @@ public void testRetryRequestAbortReason() {
           assertEquals(reason.getAbortReason(), "delay_constraint");
           break;
         case MAX_RETRY_ROUTE_LIMIT:
-          assertEquals(reason.getAbortReason(), "max_retry_router_limit");
+          assertEquals(reason.getAbortReason(), "max_retry_route_limit");
           break;
         case NO_AVAILABLE_REPLICA:
           assertEquals(reason.getAbortReason(), "no_available_replica");