Backend: Add DB Indexes

Signed-off-by: Fred Boniface <fred@fjla.uk>

UpNext.md

@@ -3,7 +3,6 @@
 ## Frontend:
 
 * Alerts box should not be clickable, bar should be.
-* Issue page: Captcha.
 * Enable text search for `locationName` on find-code page.
 * Responsive text sizes for boards.
 

src/services/dbAccess.services.js

@@ -78,10 +78,19 @@ async function query(collection, query){
     return (await qcursor.toArray());
 }
 
+async function ensureIndex(col, field) {
+    await client.connect();
+    log.out(`dbAccess.ensureIndex: Creating index in collection ${col} for field ${field}`)
+    let res = await db.createIndex(col, field);
+    log.out(`dbAccess.ensureIndex: Index created`);
+    return;
+}
+
 module.exports = {
     putCorpus,
     putStations,
     dropCollection,
     updateMeta,
-    query
+    query,
+    ensureIndex
 }

src/utils/dbinit.utils.js

@@ -12,7 +12,7 @@ async function init(){
     var status = await check('corpus');
     if (status == "not_ready") {
         try {
-            build("corpus")
+            await build("corpus")
         } catch (err) {
             log.out("dbInitUtils.init: Error building corpus database")
             log.out(err)
@@ -22,12 +22,13 @@ async function init(){
     var status = await check('stations')
     if (status == "not_ready") {
         try {
-            build("stations")
+            await build("stations")
         } catch (err) {
             log.out("dbInitUtils.init: Error building stations database")
             log.out(err)
         }
     }
+    indexes();
 }
 
 async function check(coll){
@@ -61,7 +62,7 @@ async function build(db){  // `db` must be one of: `corpus`, `stations`, `all`.
         await dbAccess.dropCollection("corpus");
         dbAccess.putCorpus(corpusAll);
 
-        log.out(`dbInitUtils.build: Updating corpus meta`)
+        log.out(`dbInitUtils.build: Updating corpus meta`);
         dbAccess.updateMeta("collection", "corpus", time.jsUnix(Date.now()));
     }
     if (db === "stations") {
@@ -69,11 +70,19 @@ async function build(db){  // `db` must be one of: `corpus`, `stations`, `all`.
         var corpusSubset = await corpus.subset(corpusAll);
         dbAccess.putStations(corpusSubset);
 
-        log.out(`dbInitUtils.build: Updating stations meta`)
+        log.out(`dbInitUtils.build: Updating stations meta`);
         dbAccess.updateMeta("collection", "stations", time.jsUnix(Date.now()));
     }
 }
 
+async function indexes() {
+    dbAccess.ensureIndex("corpus", "NLC");
+    dbAccess.ensureIndex("corpus", "3ALPHA");
+    dbAccess.ensureIndex("stations", "3ALPHA");
+    dbAccess.ensureIndex("stations", "STANOX");
+    dbAccess.ensureIndex("stations", "TIPLOC");
+}
+
 module.exports = {
     init
 }