docs(samples): updated samples code to use async await (#151)

googleapis · Nov 22, 2018 · 4661f13 · 4661f13
1 parent 021a7b2
commit 4661f13
Showing 1 changed file with 53 additions and 56 deletions.
diff --git a/packages/google-cloud-videointelligence/samples/quickstart.js b/packages/google-cloud-videointelligence/samples/quickstart.js
@@ -14,67 +14,64 @@
  */
 
 'use strict';
+async function main() {
+  // [START video_quickstart]
+  // Imports the Google Cloud Video Intelligence library
+  const videoIntelligence = require('@google-cloud/video-intelligence');
 
-// [START video_quickstart]
-// Imports the Google Cloud Video Intelligence library
-const videoIntelligence = require('@google-cloud/video-intelligence');
+  // Creates a client
+  const client = new videoIntelligence.VideoIntelligenceServiceClient();
 
-// Creates a client
-const client = new videoIntelligence.VideoIntelligenceServiceClient();
+  // The GCS uri of the video to analyze
+  const gcsUri = 'gs://nodejs-docs-samples-video/quickstart_short.mp4';
 
-// The GCS uri of the video to analyze
-const gcsUri = 'gs://nodejs-docs-samples-video/quickstart_short.mp4';
+  // Construct request
+  const request = {
+    inputUri: gcsUri,
+    features: ['LABEL_DETECTION'],
+  };
 
-// Construct request
-const request = {
-  inputUri: gcsUri,
-  features: ['LABEL_DETECTION'],
-};
+  // Execute request
+  const [operation] = await client.annotateVideo(request);
 
-// Execute request
-client
-  .annotateVideo(request)
-  .then(results => {
-    const operation = results[0];
-    console.log(
-      'Waiting for operation to complete... (this may take a few minutes)'
-    );
-    return operation.promise();
-  })
-  .then(results => {
-    // Gets annotations for video
-    const annotations = results[0].annotationResults[0];
+  console.log(
+    'Waiting for operation to complete... (this may take a few minutes)'
+  );
 
-    // Gets labels for video from its annotations
-    const labels = annotations.segmentLabelAnnotations;
-    labels.forEach(label => {
-      console.log(`Label ${label.entity.description} occurs at:`);
-      label.segments.forEach(segment => {
-        segment = segment.segment;
-        if (segment.startTimeOffset.seconds === undefined) {
-          segment.startTimeOffset.seconds = 0;
-        }
-        if (segment.startTimeOffset.nanos === undefined) {
-          segment.startTimeOffset.nanos = 0;
-        }
-        if (segment.endTimeOffset.seconds === undefined) {
-          segment.endTimeOffset.seconds = 0;
-        }
-        if (segment.endTimeOffset.nanos === undefined) {
-          segment.endTimeOffset.nanos = 0;
-        }
-        console.log(
-          `\tStart: ${segment.startTimeOffset.seconds}` +
-            `.${(segment.startTimeOffset.nanos / 1e6).toFixed(0)}s`
-        );
-        console.log(
-          `\tEnd: ${segment.endTimeOffset.seconds}.` +
-            `${(segment.endTimeOffset.nanos / 1e6).toFixed(0)}s`
-        );
-      });
+  const [operationResult] = await operation.promise();
+
+  // Gets annotations for video
+  const annotations = operationResult.annotationResults[0];
+
+  // Gets labels for video from its annotations
+  const labels = annotations.segmentLabelAnnotations;
+  labels.forEach(label => {
+    console.log(`Label ${label.entity.description} occurs at:`);
+    label.segments.forEach(segment => {
+      segment = segment.segment;
+      if (segment.startTimeOffset.seconds === undefined) {
+        segment.startTimeOffset.seconds = 0;
+      }
+      if (segment.startTimeOffset.nanos === undefined) {
+        segment.startTimeOffset.nanos = 0;
+      }
+      if (segment.endTimeOffset.seconds === undefined) {
+        segment.endTimeOffset.seconds = 0;
+      }
+      if (segment.endTimeOffset.nanos === undefined) {
+        segment.endTimeOffset.nanos = 0;
+      }
+      console.log(
+        `\tStart: ${segment.startTimeOffset.seconds}` +
+          `.${(segment.startTimeOffset.nanos / 1e6).toFixed(0)}s`
+      );
+      console.log(
+        `\tEnd: ${segment.endTimeOffset.seconds}.` +
+          `${(segment.endTimeOffset.nanos / 1e6).toFixed(0)}s`
+      );
     });
-  })
-  .catch(err => {
-    console.error('ERROR:', err);
   });
-// [END video_quickstart]
+  // [END video_quickstart]
+}
+
+main().catch(console.error);