core: Introduce sampleRate option

kamilogorek · kamilogorek · commit 9cbfdcd23b51 · 2018-08-02T13:34:06.000+02:00
diff --git a/packages/core/src/base.ts b/packages/core/src/base.ts
@@ -277,8 +277,15 @@ export abstract class BaseClient<B extends Backend, O extends Options> implement
       };
     }
 
+    const { shouldSend, beforeSend, afterSend, sampleRate } = this.getOptions();
+
+    if (typeof sampleRate === 'number' && sampleRate > Math.random()) {
+      return {
+        status: Status.Skipped,
+      };
+    }
+
     const prepared = await this.prepareEvent(event, scope);
-    const { shouldSend, beforeSend, afterSend } = this.getOptions();
     if (prepared === null || (shouldSend && !shouldSend(prepared))) {
       return {
         status: Status.Skipped,
diff --git a/packages/core/src/interfaces.ts b/packages/core/src/interfaces.ts
@@ -81,6 +81,9 @@ export interface Options {
   /** Console logging verbosity for the SDK Client. */
   logLevel?: LogLevel;
 
+  /** A global sample rate to apply to all events (0 - 1). */
+  sampleRate?: number;
+
   /**
    * A callback invoked during event submission, allowing to cancel the process.
    * If unspecified, all events will be sent to Sentry.
