doc: migrate away from defunct `addMetricReader` in examples (#5349)

doc/metrics.md

@@ -504,8 +504,9 @@ const options = { port: 9464 };
 const exporter = new PrometheusExporter(options);
 
 // Creates MeterProvider and installs the exporter as a MetricReader
-const meterProvider = new MeterProvider();
-meterProvider.addMetricReader(exporter);
+const meterProvider = new MeterProvider({
+  readers: [exporter],
+});
 const meter = meterProvider.getMeter('example-prometheus');
 
 // Now, start recording data
@@ -541,12 +542,14 @@ const collectorOptions = {
   concurrencyLimit: 1, // an optional limit on pending requests
 };
 const exporter = new OTLPMetricExporter(collectorOptions);
-const meterProvider = new MeterProvider({});
-
-meterProvider.addMetricReader(new PeriodicExportingMetricReader({
-  exporter: metricExporter,
-  exportIntervalMillis: 1000,
-}));
+const meterProvider = new MeterProvider({
+  readers: [
+    new PeriodicExportingMetricReader({
+      exporter,
+      exportIntervalMillis: 1000,
+    }),
+  ],
+});
 
 // Now, start recording data
 const meter = meterProvider.getMeter('example-meter');

examples/opentelemetry-web/examples/metrics/index.js

@@ -18,14 +18,16 @@ function stopMetrics() {
 function startMetrics() {
   console.log('STARTING METRICS');
 
-  const meterProvider = new MeterProvider();
+  const meterProvider = new MeterProvider({
+    readers: [
+      new PeriodicExportingMetricReader({
+        exporter: new OTLPMetricExporter(),
+        exportIntervalMillis: 1000
+      }),
+    ],
+  });
   metrics.setGlobalMeterProvider(meterProvider);
 
-  meterProvider.addMetricReader(new PeriodicExportingMetricReader({
-    exporter: new OTLPMetricExporter(),
-    exportIntervalMillis: 1000
-  }));
-
   meter = meterProvider.getMeter('example-exporter-collector')
 
   const requestCounter = meter.createCounter('requests', {

examples/otlp-exporter-node/metrics.js

@@ -39,16 +39,15 @@ const meterProvider = new MeterProvider({
     [SEMRESATTRS_SERVICE_NAME]: 'basic-metric-service',
   }),
   views: [expHistogramView],
+  readers: [
+    new PeriodicExportingMetricReader({
+      exporter: metricExporter,
+      // exporter: new ConsoleMetricExporter(),
+      exportIntervalMillis: 1000,
+    }),
+  ],
 });
 
-meterProvider.addMetricReader(
-  new PeriodicExportingMetricReader({
-    exporter: metricExporter,
-    // exporter: new ConsoleMetricExporter(),
-    exportIntervalMillis: 1000,
-  })
-);
-
 const meter = meterProvider.getMeter('example-exporter-collector');
 
 const requestCounter = meter.createCounter('requests', {

experimental/examples/opencensus-shim/setup.js

@@ -53,22 +53,24 @@ module.exports = function setup(serviceName) {
     spanProcessors: [
       new BatchSpanProcessor(new OTLPTraceExporter(), {
         scheduledDelayMillis: 5000,
-      })
-    ]
+      }),
+    ],
   });
   tracerProvider.register();
 
-  const meterProvider = new MeterProvider({ resource });
-  meterProvider.addMetricReader(
-    new PrometheusExporter({
-      metricProducers: [
-        new OpenCensusMetricProducer({
-          openCensusMetricProducerManager:
-            oc.Metrics.getMetricProducerManager(),
-        }),
-      ],
-    })
-  );
+  const meterProvider = new MeterProvider({
+    resource,
+    readers: [
+      new PrometheusExporter({
+        metricProducers: [
+          new OpenCensusMetricProducer({
+            openCensusMetricProducerManager:
+              oc.Metrics.getMetricProducerManager(),
+          }),
+        ],
+      }),
+    ],
+  });
   metrics.setGlobalMeterProvider(meterProvider);
 
   // Start OpenCensus tracing

experimental/examples/prometheus/index.js

@@ -16,8 +16,9 @@ const exporter = new PrometheusExporter({}, () => {
 });
 
 // Creates MeterProvider and installs the exporter as a MetricReader
-const meterProvider = new MeterProvider();
-meterProvider.addMetricReader(exporter);
+const meterProvider = new MeterProvider({
+  readers: [exporter],
+});
 const meter = meterProvider.getMeter('example-prometheus');
 
 // Creates metric instruments

experimental/packages/opentelemetry-exporter-metrics-otlp-grpc/README.md

@@ -36,12 +36,14 @@ const collectorOptions = {
 };
 
 const metricExporter = new OTLPMetricExporter(collectorOptions);
-const meterProvider = new MeterProvider({});
-
-meterProvider.addMetricReader(new PeriodicExportingMetricReader({
-  exporter: metricExporter,
-  exportIntervalMillis: 1000,
-}));
+const meterProvider = new MeterProvider({
+  readers: [
+    new PeriodicExportingMetricReader({
+      exporter: metricExporter,
+      exportIntervalMillis: 1000,
+    }),
+  ],
+});
 
 ['SIGINT', 'SIGTERM'].forEach(signal => {
   process.on(signal, () => meterProvider.shutdown().catch(console.error));

experimental/packages/opentelemetry-exporter-metrics-otlp-http/README.md

@@ -35,12 +35,14 @@ const collectorOptions = {
   concurrencyLimit: 1, // an optional limit on pending requests
 };
 const metricExporter = new OTLPMetricExporter(collectorOptions);
-const meterProvider = new MeterProvider({});
-
-meterProvider.addMetricReader(new PeriodicExportingMetricReader({
-  exporter: metricExporter,
-  exportIntervalMillis: 1000,
-}));
+const meterProvider = new MeterProvider({
+  readers: [
+    new PeriodicExportingMetricReader({
+      exporter: metricExporter,
+      exportIntervalMillis: 1000,
+    }),
+  ],
+});
 
 // Now, start recording data
 const meter = meterProvider.getMeter('example-meter');
@@ -58,12 +60,14 @@ const collectorOptions = {
   concurrencyLimit: 1, // an optional limit on pending requests
 };
 const metricExporter = new OTLPMetricExporter(collectorOptions);
-const meterProvider = new MeterProvider({});
-
-meterProvider.addMetricReader(new PeriodicExportingMetricReader({
-  exporter: metricExporter,
-  exportIntervalMillis: 1000,
-}));
+const meterProvider = new MeterProvider({
+  readers: [
+    new PeriodicExportingMetricReader({
+      exporter: metricExporter,
+      exportIntervalMillis: 1000,
+    }),
+  ],
+});
 
 // Now, start recording data
 const meter = meterProvider.getMeter('example-meter');

experimental/packages/opentelemetry-exporter-metrics-otlp-proto/README.md

@@ -28,12 +28,14 @@ const collectorOptions = {
   url: '<opentelemetry-collector-url>', // url is optional and can be omitted - default is http://localhost:4318/v1/metrics
 };
 const metricExporter = new OTLPMetricExporter(collectorOptions);
-const meterProvider = new MeterProvider({});
-
-meterProvider.addMetricReader(new PeriodicExportingMetricReader({
-  exporter: metricExporter,
-  exportIntervalMillis: 1000,
-}));
+const meterProvider = new MeterProvider({
+  readers: [
+    new PeriodicExportingMetricReader({
+      exporter: metricExporter,
+      exportIntervalMillis: 1000,
+    }),
+  ],
+});
 
 // Now, start recording data
 const meter = meterProvider.getMeter('example-meter');

experimental/packages/opentelemetry-exporter-prometheus/README.md

@@ -29,8 +29,9 @@ const options = {port: 9464};
 const exporter = new PrometheusExporter(options);
 
 // Creates MeterProvider and installs the exporter as a MetricReader
-const meterProvider = new MeterProvider();
-meterProvider.addMetricReader(exporter);
+const meterProvider = new MeterProvider({
+  readers: [exporter],
+});
 const meter = meterProvider.getMeter('example-prometheus');
 
 // Now, start recording data

experimental/packages/shim-opencensus/README.md

@@ -79,16 +79,18 @@ OpenCensus metrics can be collected and sent to an OpenTelemetry exporter by pro
 through the OpenTelemetry Prometheus exporter:
 
 ```js
-meterProvider.addMetricReader(
-  new PrometheusExporter({
-    metricProducers: [
-      new OpenCensusMetricProducer({
-        openCensusMetricProducerManager:
-          oc.Metrics.getMetricProducerManager(),
-      }),
-    ],
-  })
-);
+new MeterProvider({
+  readers: [
+    new PrometheusExporter({
+      metricProducers: [
+        new OpenCensusMetricProducer({
+          openCensusMetricProducerManager:
+            oc.Metrics.getMetricProducerManager(),
+        }),
+      ],
+    }),
+  ],
+});
 ```
 
 ## Example

experimental/packages/shim-opencensus/src/OpenCensusMetricProducer.ts

@@ -46,12 +46,13 @@ interface OpenCensusMetricProducerOptions {
  *
  * @example
  * ```
- * const meterProvider = new MeterProvider();
  * const reader = new PeriodicExportingMetricReader({
  *   metricProducers: [new OpenCensusMetricProducer()],
  *   exporter: exporter,
  * });
- * meterProvider.addMetricReader(reader);
+ * const meterProvider = new MeterProvider({
+ *   readers: [reader],
+ * });
  * ```
  */
 export class OpenCensusMetricProducer implements MetricProducer {