ADD: /getchaninfo/:chanid

controllers/api.js

@@ -109,6 +109,17 @@ subscribeInvoicesCall.on('end', function () {
   // The server has closed the stream.
 });
 
+let lightningDescribeGraph = {};
+function updateDescribeGraph() {
+  console.log('updateDescribeGraph()');
+  lightning.describeGraph({ include_unannounced: true }, function (err, response) {
+    if (!err) lightningDescribeGraph = response;
+    console.log('updated graph');
+  });
+}
+updateDescribeGraph();
+setInterval(updateDescribeGraph, 120000);
+
 // ######################## ROUTES ########################
 
 const rateLimit = require('express-rate-limit');
@@ -489,6 +500,20 @@ router.get('/queryroutes/:source/:dest/:amt', async function (req, res) {
   });
 });
 
+router.get('/getchaninfo/:chanid', async function (req, res) {
+  logger.log('/getchaninfo', [req.id]);
+
+  if (lightningDescribeGraph && lightningDescribeGraph.edges) {
+    for (const edge of lightningDescribeGraph.edges) {
+      console.log('edge.channel_id = ' + edge.channel_id);
+      if (edge.channel_id == req.params.chanid) {
+        return res.send(JSON.stringify(edge, null, 2));
+      }
+    }
+  }
+  res.send('');
+});
+
 module.exports = router;
 
 // ################# HELPERS ###########################

controllers/website.js

@@ -14,6 +14,7 @@ function updateLightning() {
     lightning.getInfo({}, function (err, info) {
       if (err) {
         console.error('lnd failure:', err);
+        return;
       }
       lightningGetInfo = info;
     });
@@ -23,6 +24,7 @@ function updateLightning() {
         console.error('lnd failure:', err);
         return;
       }
+      console.log('updated');
       lightningListChannels = response;
       let channels = [];
       let max_chan_capacity = -1;
@@ -47,7 +49,6 @@ function updateLightning() {
   } catch (Err) {
     console.log(Err);
   }
-  console.log('updated');
 }
 updateLightning();
 setInterval(updateLightning, 60000);