feat(core): Add getGlobalScope() method

This scope lives in module scope and is applied to _all_ events.

packages/core/src/globals.ts

@@ -0,0 +1,22 @@
+import type { Scope } from '@sentry/types';
+
+interface GlobalData {
+  globalScope?: Scope;
+}
+
+const GLOBAL_DATA: GlobalData = {};
+
+/**
+ * Get the global data.
+ */
+export function getGlobalData(): GlobalData {
+  return GLOBAL_DATA;
+}
+
+/**
+ * Reset all global data.
+ * Mostly useful for tests.
+ */
+export function clearGlobalData(): void {
+  delete GLOBAL_DATA.globalScope;
+}

packages/core/src/index.ts

@@ -42,7 +42,8 @@ export {
 } from './hub';
 export { makeSession, closeSession, updateSession } from './session';
 export { SessionFlusher } from './sessionflusher';
-export { Scope } from './scope';
+export { Scope, getGlobalScope } from './scope';
+export { clearGlobalData, getGlobalData } from './globals';
 export {
   notifyEventProcessors,
   // eslint-disable-next-line deprecation/deprecation
@@ -63,7 +64,7 @@ export {
   convertIntegrationFnToClass,
 } from './integration';
 export { FunctionToString, InboundFilters, LinkedErrors } from './integrations';
-export { applyScopeDataToEvent } from './utils/applyScopeDataToEvent';
+export { applyScopeDataToEvent, mergeScopeData } from './utils/applyScopeDataToEvent';
 export { prepareEvent } from './utils/prepareEvent';
 export { createCheckInEnvelope } from './checkin';
 export { hasTracingEnabled } from './utils/hasTracingEnabled';

packages/core/src/scope.ts

@@ -23,11 +23,12 @@ import type {
   Transaction,
   User,
 } from '@sentry/types';
-import { arrayify, dateTimestampInSeconds, isPlainObject, uuid4 } from '@sentry/utils';
+import { dateTimestampInSeconds, isPlainObject, uuid4 } from '@sentry/utils';
 
 import { getGlobalEventProcessors, notifyEventProcessors } from './eventProcessors';
+import { getGlobalData } from './globals';
 import { updateSession } from './session';
-import { applyScopeDataToEvent } from './utils/applyScopeDataToEvent';
+import { applyScopeDataToEvent, mergeScopeData } from './utils/applyScopeDataToEvent';
 
 /**
  * Default value for maximum number of breadcrumbs added to an event.
@@ -457,7 +458,9 @@ export class Scope implements ScopeInterface {
    * @inheritDoc
    */
   public getAttachments(): Attachment[] {
-    return this._attachments;
+    const data = this.getScopeData();
+
+    return data.attachments;
   }
 
   /**
@@ -469,7 +472,7 @@ export class Scope implements ScopeInterface {
   }
 
   /** @inheritDoc */
-  public getScopeData(): ScopeData {
+  public getPerScopeData(): ScopeData {
     const {
       _breadcrumbs,
       _attachments,
@@ -503,6 +506,16 @@ export class Scope implements ScopeInterface {
     };
   }
 
+  /** @inheritdoc */
+  public getScopeData(): ScopeData {
+    const data = getGlobalScope().getPerScopeData();
+    const scopeData = this.getPerScopeData();
+
+    mergeScopeData(data, scopeData);
+
+    return data;
+  }
+
   /**
    * Applies data from the scope to the event and runs all event processors on it.
    *
@@ -570,6 +583,19 @@ export class Scope implements ScopeInterface {
   }
 }
 
+/**
+ * Get the global scope.
+ * This scope is applied to _all_ events.
+ */
+export function getGlobalScope(): ScopeInterface {
+  const globalData = getGlobalData();
+  if (!globalData.globalScope) {
+    globalData.globalScope = new Scope();
+  }
+
+  return globalData.globalScope;
+}
+
 function generatePropagationContext(): PropagationContext {
   return {
     traceId: uuid4(),

packages/core/src/utils/applyScopeDataToEvent.ts

@@ -22,6 +22,104 @@ export function applyScopeDataToEvent(event: Event, data: ScopeData): void {
   applySdkMetadataToEvent(event, sdkProcessingMetadata, propagationContext);
 }
 
+/** Merge data of two scopes together. */
+export function mergeScopeData(data: ScopeData, mergeData: ScopeData): void {
+  const {
+    extra,
+    tags,
+    user,
+    contexts,
+    level,
+    sdkProcessingMetadata,
+    breadcrumbs,
+    fingerprint,
+    eventProcessors,
+    attachments,
+    propagationContext,
+    transactionName,
+    span,
+  } = mergeData;
+
+  mergePropOverwrite(data, 'extra', extra);
+  mergePropOverwrite(data, 'tags', tags);
+  mergePropOverwrite(data, 'user', user);
+  mergePropOverwrite(data, 'contexts', contexts);
+  mergePropOverwrite(data, 'sdkProcessingMetadata', sdkProcessingMetadata);
+
+  if (level) {
+    data.level = level;
+  }
+
+  if (transactionName) {
+    data.transactionName = transactionName;
+  }
+
+  if (span) {
+    data.span = span;
+  }
+
+  if (breadcrumbs.length) {
+    data.breadcrumbs = [...data.breadcrumbs, ...breadcrumbs];
+  }
+
+  if (fingerprint.length) {
+    data.fingerprint = [...data.fingerprint, ...fingerprint];
+  }
+
+  if (eventProcessors.length) {
+    data.eventProcessors = [...data.eventProcessors, ...eventProcessors];
+  }
+
+  if (attachments.length) {
+    data.attachments = [...data.attachments, ...attachments];
+  }
+
+  data.propagationContext = { ...data.propagationContext, ...propagationContext };
+}
+
+/**
+ * Merge properties, overwriting existing keys.
+ * Exported only for tests.
+ */
+export function mergePropOverwrite<
+  Prop extends 'extra' | 'tags' | 'user' | 'contexts' | 'sdkProcessingMetadata',
+  Data extends ScopeData | Event,
+>(data: Data, prop: Prop, mergeVal: Data[Prop]): void {
+  if (mergeVal && Object.keys(mergeVal).length) {
+    data[prop] = { ...data[prop], ...mergeVal };
+  }
+}
+
+/**
+ * Merge properties, keeping existing keys.
+ * Exported only for tests.
+ */
+export function mergePropKeep<
+  Prop extends 'extra' | 'tags' | 'user' | 'contexts' | 'sdkProcessingMetadata',
+  Data extends ScopeData | Event,
+>(data: Data, prop: Prop, mergeVal: Data[Prop]): void {
+  if (mergeVal && Object.keys(mergeVal).length) {
+    data[prop] = { ...mergeVal, ...data[prop] };
+  }
+}
+
+/** Exported only for tests */
+export function mergeArray<Prop extends 'breadcrumbs' | 'fingerprint'>(
+  event: Event,
+  prop: Prop,
+  mergeVal: ScopeData[Prop],
+): void {
+  const prevVal = event[prop];
+  // If we are not merging any new values,
+  // we only need to proceed if there was an empty array before (as we want to replace it with undefined)
+  if (!mergeVal.length && (!prevVal || prevVal.length)) {
+    return;
+  }
+
+  const merged = [...(prevVal || []), ...mergeVal] as ScopeData[Prop];
+  event[prop] = merged.length ? merged : undefined;
+}
+
 function applyDataToEvent(event: Event, data: ScopeData): void {
   const { extra, tags, user, contexts, level, transactionName } = data;