ui: set index created time as last used time

pkg/ui/workspaces/cluster-ui/src/databaseTablePage/databaseTablePage.stories.tsx

@@ -126,6 +126,12 @@ const withData: DatabaseTablePageProps = {
         lastUsedType: "reset",
         indexName: "secondary",
       },
+      {
+        totalReads: 0,
+        lastUsed: moment("2022-03-12T14:31:00Z"),
+        lastUsedType: "created",
+        indexName: "secondary",
+      },
     ],
     lastReset: moment("2021-09-04T13:55:00Z"),
   },

pkg/ui/workspaces/cluster-ui/src/databaseTablePage/databaseTablePage.tsx

@@ -239,25 +239,15 @@ export class DatabaseTablePage extends React.Component<
   }
 
   private getLastUsedString(indexStat: IndexStat) {
-    const lastReset = this.props.indexStats.lastReset;
-    switch (indexStat.lastUsedType) {
-      case "read":
-        return formatDate(
-          indexStat.lastUsed,
-          "[Last read:] MMM DD, YYYY [at] h:mm A",
-        );
-      case "reset":
-      default:
-        // TODO(lindseyjin): replace default case with create time after it's added to table_indexes
-        if (lastReset.isSame(this.minDate)) {
-          return "Never";
-        } else {
-          return formatDate(
-            lastReset,
-            "[Last reset:] MMM DD, YYYY [at] h:mm A",
-          );
-        }
+    // This case only occurs when we have no reads, resets, or creation time on
+    // the index.
+    if (indexStat.lastUsed.isSame(this.minDate)) {
+      return "Never";
     }
+    return formatDate(
+      indexStat.lastUsed,
+      `[Last ${indexStat.lastUsedType}:] MMM DD, YYYY [at] h:mm A`,
+    );
   }
 
   private indexStatsColumns: ColumnDescriptor<IndexStat>[] = [

pkg/ui/workspaces/db-console/src/views/databases/databaseTablePage/redux.spec.ts

@@ -275,8 +275,27 @@ describe("Database Table Page", function() {
           index_name: "jobs_status_created_idx",
           index_type: "secondary",
         },
+        {
+          statistics: {
+            key: {
+              table_id: 1,
+              index_id: 2,
+            },
+            stats: {
+              total_read_count: new Long(0),
+              last_read: makeTimestamp("0001-01-01T00:00:00Z"),
+              total_rows_read: new Long(0),
+              total_write_count: new Long(0),
+              last_write: makeTimestamp("0001-01-01T00:00:00Z"),
+              total_rows_written: new Long(0),
+            },
+          },
+          index_name: "index_no_reads_no_resets",
+          index_type: "secondary",
+          created_at: makeTimestamp("0001-01-01T00:00:00Z"),
+        },
       ],
-      last_reset: makeTimestamp("2021-11-12T20:18:22.167627Z"),
+      last_reset: makeTimestamp("0001-01-01T00:00:00Z"),
     });
 
     await driver.refreshIndexStats();
@@ -293,10 +312,16 @@ describe("Database Table Page", function() {
           ),
           lastUsedType: "read",
         },
+        {
+          indexName: "index_no_reads_no_resets",
+          totalReads: 0,
+          lastUsed: util.TimestampToMoment(
+            makeTimestamp("0001-01-01T00:00:00Z"),
+          ),
+          lastUsedType: "created",
+        },
       ],
-      lastReset: util.TimestampToMoment(
-        makeTimestamp("2021-11-12T20:18:22.167627Z"),
-      ),
+      lastReset: util.TimestampToMoment(makeTimestamp("0001-01-01T00:00:00Z")),
     });
   });
 });

pkg/ui/workspaces/db-console/src/views/databases/databaseTablePage/redux.ts

@@ -74,13 +74,21 @@ export const mapStateToProps = createSelector(
           indexStat.statistics?.stats?.last_read,
         );
         let lastUsed, lastUsedType;
-        if (lastRead.isAfter(lastReset)) {
-          lastUsed = lastRead;
-          lastUsedType = "read";
+        if (indexStat.created_at !== null) {
+          lastUsed = util.TimestampToMoment(indexStat.created_at);
+          lastUsedType = "created";
         } else {
           lastUsed = lastReset;
           lastUsedType = "reset";
         }
+        if (lastReset.isAfter(lastUsed)) {
+          lastUsed = lastReset;
+          lastUsedType = "reset";
+        }
+        if (lastRead.isAfter(lastUsed)) {
+          lastUsed = lastRead;
+          lastUsedType = "read";
+        }
         return {
           indexName: indexStat.index_name,
           totalReads: longToInt(indexStat.statistics?.stats?.total_read_count),

pkg/ui/workspaces/db-console/src/views/databases/utils.ts

@@ -67,6 +67,6 @@ export function getNodesByRegionString(
 // makeTimestamp converts a string to a google.protobuf.Timestamp object.
 export function makeTimestamp(date: string): Timestamp {
   return new protos.google.protobuf.Timestamp({
-    seconds: new Long(Date.parse(date) * 1e-3),
+    seconds: new Long(new Date(date).getUTCSeconds()),
   });
 }