chore: use semver to determine API compatibility

src/api/context.ts

@@ -17,12 +17,12 @@
 import { NoopContextManager } from '../context/NoopContextManager';
 import { Context, ContextManager } from '../context/types';
 import {
-  API_BACKWARDS_COMPATIBILITY_VERSION,
-  GLOBAL_CONTEXT_MANAGER_API_KEY,
-  makeGetter,
-  _global,
-} from './global-utils';
+  getGlobal,
+  registerGlobal,
+  unregisterGlobal,
+} from '../internal/global-utils';
 
+const API_NAME = 'context';
 const NOOP_CONTEXT_MANAGER = new NoopContextManager();
 
 /**
@@ -49,17 +49,7 @@ export class ContextAPI {
   public setGlobalContextManager(
     contextManager: ContextManager
   ): ContextManager {
-    if (_global[GLOBAL_CONTEXT_MANAGER_API_KEY]) {
-      // global context manager has already been set
-      return this._getContextManager();
-    }
-
-    _global[GLOBAL_CONTEXT_MANAGER_API_KEY] = makeGetter(
-      API_BACKWARDS_COMPATIBILITY_VERSION,
-      contextManager,
-      NOOP_CONTEXT_MANAGER
-    );
-
+    registerGlobal(API_NAME, contextManager);
     return contextManager;
   }
 
@@ -98,16 +88,12 @@ export class ContextAPI {
   }
 
   private _getContextManager(): ContextManager {
-    return (
-      _global[GLOBAL_CONTEXT_MANAGER_API_KEY]?.(
-        API_BACKWARDS_COMPATIBILITY_VERSION
-      ) ?? NOOP_CONTEXT_MANAGER
-    );
+    return getGlobal(API_NAME) || NOOP_CONTEXT_MANAGER;
   }
 
   /** Disable and remove the global context manager */
   public disable() {
     this._getContextManager().disable();
-    delete _global[GLOBAL_CONTEXT_MANAGER_API_KEY];
+    unregisterGlobal(API_NAME);
   }
 }

src/api/diag.ts

@@ -23,48 +23,27 @@ import {
 } from '../diag/logger';
 import { DiagLogLevel, createLogLevelDiagLogger } from '../diag/logLevel';
 import {
-  API_BACKWARDS_COMPATIBILITY_VERSION,
-  GLOBAL_DIAG_LOGGER_API_KEY,
-  makeGetter,
-  _global,
-} from './global-utils';
-
-/** Internal simple Noop Diag API that returns a noop logger and does not allow any changes */
-function noopDiagApi(): DiagAPI {
-  const noopLogger = createNoopDiagLogger();
-  return {
-    disable: () => {},
-    getLogger: () => noopLogger,
-    setLogger: () => {},
-    ...noopLogger,
-  };
-}
+  getGlobal,
+  registerGlobal,
+  unregisterGlobal,
+} from '../internal/global-utils';
+
+const API_NAME = 'diag';
 
 /**
  * Singleton object which represents the entry point to the OpenTelemetry internal
  * diagnostic API
  */
 export class DiagAPI implements DiagLogger {
+  private static _instance?: DiagAPI;
+
   /** Get the singleton instance of the DiagAPI API */
   public static instance(): DiagAPI {
-    let theInst = null;
-    if (_global[GLOBAL_DIAG_LOGGER_API_KEY]) {
-      // Looks like a previous instance was set, so try and fetch it
-      theInst = _global[GLOBAL_DIAG_LOGGER_API_KEY]?.(
-        API_BACKWARDS_COMPATIBILITY_VERSION
-      ) as DiagAPI;
+    if (!this._instance) {
+      this._instance = new DiagAPI();
     }
 
-    if (!theInst) {
-      theInst = new DiagAPI();
-      _global[GLOBAL_DIAG_LOGGER_API_KEY] = makeGetter(
-        API_BACKWARDS_COMPATIBILITY_VERSION,
-        theInst,
-        noopDiagApi()
-      );
-    }
-
-    return theInst;
+    return this._instance;
   }
 
   /**
@@ -73,12 +52,11 @@ export class DiagAPI implements DiagLogger {
    */
   private constructor() {
     const _noopLogger = createNoopDiagLogger();
-    let _filteredLogger: FilteredDiagLogger | undefined;
 
     function _logProxy(funcName: keyof DiagLogger): DiagLogFunction {
       return function () {
         const orgArguments = arguments as unknown;
-        const theLogger = _filteredLogger || _noopLogger;
+        const theLogger = self.getLogger();
         const theFunc = theLogger[funcName];
         if (typeof theFunc === 'function') {
           return theFunc.apply(
@@ -95,7 +73,7 @@ export class DiagAPI implements DiagLogger {
     // DiagAPI specific functions
 
     self.getLogger = (): FilteredDiagLogger => {
-      return _filteredLogger || _noopLogger;
+      return getGlobal(API_NAME) || _noopLogger;
     };
 
     self.setLogger = (
@@ -106,11 +84,15 @@ export class DiagAPI implements DiagLogger {
       // is used as a child of itself accidentally.
       logger = logger === self ? self.getLogger().getChild() : logger;
       logger = logger ?? _noopLogger;
-      _filteredLogger = createLogLevelDiagLogger(logLevel, logger);
+      registerGlobal(
+        API_NAME,
+        createLogLevelDiagLogger(logLevel, logger),
+        true
+      );
     };
 
     self.disable = () => {
-      _filteredLogger = undefined;
+      unregisterGlobal(API_NAME);
     };
 
     for (let i = 0; i < diagLoggerFunctions.length; i++) {

src/api/propagation.ts

@@ -24,11 +24,12 @@ import {
   TextMapSetter,
 } from '../propagation/TextMapPropagator';
 import {
-  API_BACKWARDS_COMPATIBILITY_VERSION,
-  GLOBAL_PROPAGATION_API_KEY,
-  makeGetter,
-  _global,
-} from './global-utils';
+  getGlobal,
+  registerGlobal,
+  unregisterGlobal,
+} from '../internal/global-utils';
+
+const API_NAME = 'propagation';
 
 /**
  * Singleton object which represents the entry point to the OpenTelemetry Propagation API
@@ -52,17 +53,7 @@ export class PropagationAPI {
    * Set the current propagator. Returns the initialized propagator
    */
   public setGlobalPropagator(propagator: TextMapPropagator): TextMapPropagator {
-    if (_global[GLOBAL_PROPAGATION_API_KEY]) {
-      // global propagator has already been set
-      return this._getGlobalPropagator();
-    }
-
-    _global[GLOBAL_PROPAGATION_API_KEY] = makeGetter(
-      API_BACKWARDS_COMPATIBILITY_VERSION,
-      propagator,
-      NOOP_TEXT_MAP_PROPAGATOR
-    );
-
+    registerGlobal(API_NAME, propagator);
     return propagator;
   }
 
@@ -105,14 +96,10 @@ export class PropagationAPI {
 
   /** Remove the global propagator */
   public disable() {
-    delete _global[GLOBAL_PROPAGATION_API_KEY];
+    unregisterGlobal(API_NAME);
   }
 
   private _getGlobalPropagator(): TextMapPropagator {
-    return (
-      _global[GLOBAL_PROPAGATION_API_KEY]?.(
-        API_BACKWARDS_COMPATIBILITY_VERSION
-      ) ?? NOOP_TEXT_MAP_PROPAGATOR
-    );
+    return getGlobal(API_NAME) || NOOP_TEXT_MAP_PROPAGATOR;
   }
 }

src/api/trace.ts

@@ -14,17 +14,17 @@
  * limitations under the License.
  */
 
-import { NOOP_TRACER_PROVIDER } from '../trace/NoopTracerProvider';
 import { ProxyTracerProvider } from '../trace/ProxyTracerProvider';
 import { Tracer } from '../trace/tracer';
 import { TracerProvider } from '../trace/tracer_provider';
 import { isSpanContextValid } from '../trace/spancontext-utils';
 import {
-  API_BACKWARDS_COMPATIBILITY_VERSION,
-  GLOBAL_TRACE_API_KEY,
-  makeGetter,
-  _global,
-} from './global-utils';
+  getGlobal,
+  registerGlobal,
+  unregisterGlobal,
+} from '../internal/global-utils';
+
+const API_NAME = 'trace';
 
 /**
  * Singleton object which represents the entry point to the OpenTelemetry Tracing API
@@ -50,30 +50,16 @@ export class TraceAPI {
    * Set the current global tracer. Returns the initialized global tracer provider
    */
   public setGlobalTracerProvider(provider: TracerProvider): TracerProvider {
-    if (_global[GLOBAL_TRACE_API_KEY]) {
-      // global tracer provider has already been set
-      return this.getTracerProvider();
-    }
-
     this._proxyTracerProvider.setDelegate(provider);
-
-    _global[GLOBAL_TRACE_API_KEY] = makeGetter(
-      API_BACKWARDS_COMPATIBILITY_VERSION,
-      this._proxyTracerProvider,
-      NOOP_TRACER_PROVIDER
-    );
-
-    return this.getTracerProvider();
+    registerGlobal(API_NAME, this._proxyTracerProvider);
+    return this._proxyTracerProvider;
   }
 
   /**
    * Returns the global tracer provider.
    */
   public getTracerProvider(): TracerProvider {
-    return (
-      _global[GLOBAL_TRACE_API_KEY]?.(API_BACKWARDS_COMPATIBILITY_VERSION) ??
-      this._proxyTracerProvider
-    );
+    return getGlobal(API_NAME) || this._proxyTracerProvider;
   }
 
   /**
@@ -85,7 +71,7 @@ export class TraceAPI {
 
   /** Remove the global tracer provider */
   public disable() {
-    delete _global[GLOBAL_TRACE_API_KEY];
+    unregisterGlobal(API_NAME);
     this._proxyTracerProvider = new ProxyTracerProvider();
   }