code review

src/_flow/baggage_restriction_manager.js

@@ -28,5 +28,5 @@ import Restriction from '../baggage/restriction.js'
  * allowed and any other applicable restrictions on the baggage value.
  */
 declare interface BaggageRestrictionManager {
-    getRestriction(key: string): Restriction;
+    getRestriction(service: string, key: string): Restriction;
 }

src/baggage/baggage_setter.js

@@ -49,7 +49,7 @@ export default class BaggageSetter {
         let value = baggageValue;
         let truncated = false;
         let prevItem = '';
-        let restriction = this._restrictionManager.getRestriction(key);
+        let restriction = this._restrictionManager.getRestriction(span.serviceName, key);
         if (!restriction.keyAllowed) {
             this._logFields(span, key, value, prevItem, truncated, restriction.keyAllowed);
             this._metrics.baggageUpdateFailure.increment(1);

src/baggage/default_baggage_restriction_manager.js

@@ -34,7 +34,7 @@ export default class DefaultBaggageRestrictionManager {
         this._restriction = new Restriction(true, length);
     }
 
-    getRestriction(key: string): Restriction {
+    getRestriction(service: string, key: string): Restriction {
         return this._restriction;
     }
 }

src/span.js

@@ -59,6 +59,10 @@ export default class Span {
         return this._operationName;
     }
 
+    get serviceName(): string {
+        return this._tracer._serviceName;
+    }
+
     static _getBaggageHeaderCache() {
         if (!Span._baggageHeaderCache) {
             Span._baggageHeaderCache = {};

src/tracer.js

@@ -75,7 +75,8 @@ export default class Tracer {
         this._reporter = reporter;
         this._sampler = sampler;
         this._logger = options.logger || new NullLogger();
-        this._baggageSetter  = new BaggageSetter(options.baggageRestrictionManager || new DefaultBaggageRestrictionManager(),
+        this._baggageSetter = new BaggageSetter(
+            options.baggageRestrictionManager || new DefaultBaggageRestrictionManager(),
             this._metrics);
         this._injectors = {};
         this._extractors = {};