Business errors differenciated from technical errors in the Lambda runner

bin/lambda.js

@@ -6,18 +6,42 @@ const ylt = require('..');
 async function runner({id, url, options = {}}, context) {
     console.log(`Processing run #${id} on ${url}`);
     
+    // AWS S3 bucket and path
     const bucket = process.env.RESULT_BUCKET_NAME;
     const keyPrefix = `results/${id}`;
 
+    // Function that can save any file on S3 (JSON, screenshot,...)
     const saveFile = async (path, content) => s3.putObject({Bucket: bucket, Key: `${keyPrefix}/${path}`, Body: content})
         .promise();
     
-    const results = JSON.stringify(await ylt(url, {...options, saveFile}));
-    results.runId = id;
+    // Let's launch ylt
+    const result = await ylt(url, {...options, saveScreenshotFn: saveFile})
     
-    await saveFile('results.json', results);
+    .then(async data => {
+        console.log(`Run succeeded`);
+
+        data.runId = id;
+        await saveFile('results.json', JSON.stringify(data));
+
+        return {
+            status: 'processed',
+            id,
+            bucket,
+            keyPrefix
+        };
+    })
     
-    return {status: 'processed', id, bucket, keyPrefix};
+    .fail(error => {
+        console.log(`Run failed with error: ${error}`);
+        return {
+            status: 'failed',
+            id,
+            bucket,
+            errorMessage: error
+        };
+    });
+    
+    return result;
 }
 
-module.exports = {runner}
+module.exports = {runner};