[feat] sync: print sync duration at end

app/modules/crawler/lib/sync.ts

@@ -140,6 +140,7 @@ export class Synchroniser extends stream.Duplex {
       this.logger.info("Sync started.");
 
       const fullSync = !to;
+      const syncStartTime = Date.now();
 
       //============
       // Blockchain headers
@@ -240,9 +241,10 @@ export class Synchroniser extends stream.Duplex {
         await this.syncStrategy.syncPeers(fullSync, to);
       }
 
-      this.watcher.end();
+      const syncDuration = Date.now() - syncStartTime;
+      this.watcher.end(syncDuration);
       this.push({ sync: true });
-      this.logger.info("Sync finished.");
+      this.logger.info("Sync finished (duration %s ms).", syncDuration);
     } catch (err) {
       this.push({ sync: false, msg: err });
       err &&

app/modules/crawler/lib/sync/Watcher.ts

@@ -11,7 +11,7 @@ export interface Watcher {
   appliedPercent(pct?: number): number;
   sbxPercent(pct?: number): number;
   peersPercent(pct?: number): number;
-  end(): void;
+  end(duration?: number): void;
 
   reserveNodes(nodesAvailable: P2pCandidate[]): void;
 
@@ -114,8 +114,8 @@ export class EventWatcher extends events.EventEmitter implements Watcher {
     return method(pct);
   }
 
-  end(): void {
-    this.innerWatcher.end();
+  end(syncDuration?: number): void {
+    this.innerWatcher.end(syncDuration);
   }
 
   onEvent(e: EventName, cb: (pct: number) => void) {
@@ -261,8 +261,14 @@ export class MultimeterWatcher implements Watcher {
     return 0;
   }
 
-  end() {
+  end(duration?: number) {
+    if (duration) {
+      const durationSecs = Math.floor(duration / 1000);
+      const durationMillisRemain = duration % 1000;
+      this.multi.write("\nAll done in " + durationSecs + "." + durationMillisRemain + " seconds.\n");
+    } else {
       this.multi.write("\nAll done.\n");
+    }
     this.multi.destroy();
   }