improved chart functionality in the web monitor and added handlers for errors such as no response from the miner

tools/web_monitor/app.py

@@ -43,18 +43,29 @@ async def miner_websocket(websocket: WebSocket, miner_ip):
     await websocket.accept()
     try:
         while True:
-            miner = await miner_factory.get_miner(str(miner_ip))
+            try:
-            miner_summary = await miner.api.summary()
+                miner = await asyncio.wait_for(miner_factory.get_miner(str(miner_ip)), 5)
-            print(miner_summary)
+                miner_summary = await asyncio.wait_for(miner.api.summary(), 5)
                 if 'MHS av' in miner_summary['SUMMARY'][0].keys():
-                hashrate = format(round(miner_summary['SUMMARY'][0]['MHS av']/1000000, 2), ".2f")
+                    hashrate = format(
+                        round(miner_summary['SUMMARY'][0]['MHS av'] / 1000000,
+                              2), ".2f")
                 elif 'GHS av' in miner_summary['summary'][0]['SUMMARY'][0].keys():
-                hashrate = format(round(miner_summary['SUMMARY'][0]['GHS av']/1000, 2), ".2f")
+                    hashrate = format(
+                        round(miner_summary['SUMMARY'][0]['GHS av'] / 1000, 2),
+                        ".2f")
                 else:
                     hashrate = 0
-            data = {"hashrate": hashrate, "datetime": datetime.datetime.now().isoformat()}
+                data = {"hashrate": hashrate,
+                        "datetime": datetime.datetime.now().isoformat()}
                 await websocket.send_json(data)
                 await asyncio.sleep(5)
+            except asyncio.exceptions.TimeoutError:
+                data = {"error": "The miner is not responding."}
+                await websocket.send_json(data)
+            except KeyError:
+                data = {"error": "The miner returned incorrect data."}
+                await websocket.send_json(data)
     except WebSocketDisconnect:
         print("Websocket disconnected.")
         pass

tools/web_monitor/templates/miner.html

@@ -2,8 +2,25 @@
 {% block content %}
 <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/luxon@2.3.1/build/global/luxon.min.js"></script>
-<h2 class="mt-2 ms-4">{{miner}}</h2>
+<div class="row mt-2">
+    <div class="col">
+        <h2 class="ms-4">{{miner}}</h2>
+    </div>
+    <div class="col">
+        <div class="d-flex flex-row-reverse">
+        <a class="btn btn-outline-danger mx-1" href="#" role="button">Remove</a>
+        <a class="btn btn-primary mx-1" target="_blank" href="http://{{miner}}" role="button">Web Interface</a>
+        </div>
+    </div>
+</div>
+
+
+
 <canvas id="line-chart" width="600" height="360" class="mt-3"></canvas>
+<div id="errorContainer" class="d-flex align-items-center mt-4 ms-4 alert alert-danger invisible">
+    <strong id="errorCode"></strong>
+  <div class="spinner-border ms-auto"></div>
+</div>
 
 <script>
 var ws = new WebSocket("ws://localhost:80/miner/{{miner}}/ws");
@@ -11,12 +28,24 @@ let all_data = []
 let all_labels = []
 ws.onmessage = function(event) {
     var new_data = JSON.parse(event.data)
+    if (new_data.hasOwnProperty("error")) {
+        var err_container = document.getElementById("errorContainer")
+        var err_code = document.getElementById("errorCode")
+        err_code.innerHTML = new_data['error']
+        err_container.classList.remove("invisible")
+    } else {
+        var chart = document.getElementById("line-chart")
+        var err_container = document.getElementById("errorContainer")
+        if (!err_container.classList.hasOwnProperty("invisible")) {
+            err_container.classList.add("invisible")
+        }
         datetime = luxon.DateTime.fromISO(new_data["datetime"]).toLocal();
         if (minerDataChart.data.labels.length > 49) minerDataChart.data.labels.shift();
         if (minerDataChart.data.datasets[0].data.length > 49) minerDataChart.data.datasets[0].data.shift();
         minerDataChart.data.labels.push(datetime.toLocaleString(luxon.DateTime.TIME_WITH_SECONDS));
         minerDataChart.data.datasets[0].data.push(new_data["hashrate"]);
         minerDataChart.update();
+    };
 };
 
 var ctx = document.getElementById("line-chart").getContext("2d");
@@ -43,6 +72,10 @@ var minerDataChart = new Chart(document.getElementById("line-chart"), {
     ]
   },
   options: {
+      animation: {
+        easing: 'easeInSine',
+        duration: 250
+      },
       plugins: {
             legend: {
                 display: false
@@ -51,9 +84,9 @@ var minerDataChart = new Chart(document.getElementById("line-chart"), {
     scales: {
         y: {
             min: 0, // minimum value
+            suggestedMax: 10,
             stepSize: 1
         },
-
         x: {
             ticks: {
                 maxTicksLimit: 8,