adding healthchecks

xmrnodes/app.py

@@ -11,7 +11,7 @@ from flask import render_template, flash, url_for
 from urllib.parse import urlparse
 from xmrnodes.helpers import determine_crypto, is_onion, make_request
 from xmrnodes.forms import SubmitNode
-from xmrnodes.models import Node
+from xmrnodes.models import Node, HealthCheck
 from xmrnodes import config
 
 
@@ -93,6 +93,7 @@ def check():
     nodes = Node.select().where(Node.validated == True)
     for node in nodes:
         now = datetime.utcnow()
+        hc = HealthCheck(node=node)
         logging.info(f"Attempting to check {node.url}")
         try:
             r = make_request(node.url)
@@ -103,15 +104,18 @@ def check():
                 logging.info("success")
                 node.available = True
                 node.last_height = r.json()["height"]
+                hc.health = True
             else:
                 raise
         except:
             logging.info("fail")
             node.datetime_failed = now
             node.available = False
+            hc.health = False
         finally:
             node.datetime_checked = now
             node.save()
+            hc.save()
 
 @app.cli.command("validate")
 def validate():
@@ -171,11 +175,14 @@ def import_():
     export_dir = f"{config.DATA_DIR}/export.txt"
     with open(export_dir, 'r') as f:
         for url in f.readlines():
+            try:
                 n = url.rstrip()
-            all_nodes.append(n)
                 logging.info(f"Adding {n}")
                 node = Node(url=n)
                 node.save()
+                all_nodes.append(n)
+            except:
+                pass
     logging.info(f"{len(all_nodes)} node urls imported and ready to be validated")
 
 @app.template_filter("humanize")

xmrnodes/models.py

@@ -7,7 +7,7 @@ db = SqliteDatabase(f"{config.DATA_DIR}/sqlite.db")
 
 class Node(Model):
     id = AutoField()
-    url = CharField()
+    url = CharField(unique=True)
     is_tor = BooleanField(default=False)
     available = BooleanField(default=False)
     validated = BooleanField(default=False)
@@ -22,4 +22,13 @@ class Node(Model):
     class Meta:
         database = db
 
-db.create_tables([Node])
+class HealthCheck(Model):
+    id = AutoField()
+    node = ForeignKeyField(Node, backref='healthchecks')
+    datetime = DateTimeField(default=datetime.utcnow)
+    health = BooleanField()
+
+    class Meta:
+        database = db
+
+db.create_tables([Node, HealthCheck])

xmrnodes/static/css/style.css

@@ -33,3 +33,18 @@ input[type="text"] {
 .wownero {
   background-color: rgb(235, 74, 206);
 }
+
+.dot {
+  height: 10px;
+  width: 10px;
+  border-radius: 50%;
+  display: inline-block;
+}
+
+.glowing-green {
+  background-color: #00cd00;
+}
+
+.glowing-red {
+  background-color: #cd0000;
+}

xmrnodes/templates/index.html

@@ -38,6 +38,7 @@
           <th>Network</th>
           <th>Height</th>
           <th>Last Checked</th>
+          <th>History</th>
         </tr>
       </thead>
       <tbody>
@@ -54,6 +55,12 @@
           <td>{{ node.nettype }}</td>
           <td>{{ node.last_height }}</td>
           <td>{{ node.datetime_checked | humanize }}</td>
+          <td>{% for hc in node.healthchecks %}
+            {% if loop.index > loop.length - 11 %}
+            <span class="dot glowing-{% if hc.health %}green{% else %}red{% endif %}"></span>
+            {% endif %}
+          {% endfor %}
+          </td>
         </tr>
       {% endfor %}
       </tbody>