Merge branch 'master' into nymkappa/bugfix/asn-mapping

backend/src/api/bitcoin/bitcoin.routes.ts

@@ -510,7 +510,12 @@ class BitcoinRoutes {
 
   private getDifficultyChange(req: Request, res: Response) {
     try {
-      res.json(difficultyAdjustment.getDifficultyAdjustment());
+      const da = difficultyAdjustment.getDifficultyAdjustment();
+      if (da) {
+        res.json(da);
+      } else {
+        res.status(503).send(`Service Temporarily Unavailable`);
+      }
     } catch (e) {
       res.status(500).send(e instanceof Error ? e.message : e);
     }

backend/src/api/difficulty-adjustment.ts

@@ -81,14 +81,15 @@ export function calcDifficultyAdjustment(
 }
 
 class DifficultyAdjustmentApi {
-  constructor() { }
-
-  public getDifficultyAdjustment(): IDifficultyAdjustment {
+  public getDifficultyAdjustment(): IDifficultyAdjustment | null {
     const DATime = blocks.getLastDifficultyAdjustmentTime();
     const previousRetarget = blocks.getPreviousDifficultyRetarget();
     const blockHeight = blocks.getCurrentBlockHeight();
     const blocksCache = blocks.getBlocks();
     const latestBlock = blocksCache[blocksCache.length - 1];
+    if (!latestBlock) {
+      return null;
+    }
     const nowSeconds = Math.floor(new Date().getTime() / 1000);
 
     return calcDifficultyAdjustment(

frontend/src/app/lightning/nodes-channels/node-channels.component.ts

@@ -130,10 +130,6 @@ export class NodeChannels implements OnChanges {
   }
 
   onChartInit(ec: ECharts): void {
-    if (this.chartInstance !== undefined) {
-      return;
-    }
-
     this.chartInstance = ec;
 
     this.chartInstance.on('click', (e) => {

production/nginx/server-common.conf

@@ -48,6 +48,9 @@ add_header Vary Cookie;
 # for exact / requests, redirect based on $lang
 # cache redirect for 5 minutes
 location = / {
+	if ($unfurlbot) {
+		proxy_pass $mempoolSpaceUnfurler;
+	}
 	if ($lang != '') {
 		return 302 $scheme://$host/$lang/;
 	}