Add DB index (#846)

Signed-off-by: Lan Xia <[email protected]>

Author: llxia

TestResultSummaryService/Database.js

@@ -1,5 +1,6 @@
 const { MongoClient, ObjectID } = require('mongodb');
 const ArgParser = require('./ArgParser');
+const { logger } = require('./Utils');
 
 let db;
 (async function () {
@@ -33,6 +34,22 @@ let db;
             // do nothing. The collection may already exist
         }
     }
+    const testResultsDB = db.collection('testResults');
+
+    const parentIdIndex = await testResultsDB.createIndex({ parentId: 1 });
+    logger.info('Index created: ', parentIdIndex);
+    const urlBuildNameBuildNumIndex = await testResultsDB.createIndex({
+        url: 1,
+        buildName: 1,
+        buildNum: 1,
+    });
+    logger.info('Index created: ', urlBuildNameBuildNumIndex);
+
+    const result = await testResultsDB.listIndexes().toArray();
+    logger.info('Existing testResults indexes:');
+    for (const doc of result) {
+        logger.info(doc);
+    }
 })();
 
 class Database {