fix: [dashboard] Filter out dashboard event-stream SSL.SSLEOFError from the log if a client disconnects

bin/lib/ail_logger.py

@@ -27,7 +27,3 @@ def get_config(name=None):
         config = json.load(f)
         config['handlers']['file']['filename'] = os.path.join(os.environ['AIL_HOME'], 'logs', name)
     return config
-
-
-if __name__ == '__main__':
-    pass

var/www/Flask_server.py

@@ -81,13 +81,30 @@ log_dir = os.path.join(os.environ['AIL_HOME'], 'logs')
 if not os.path.isdir(log_dir):
     os.makedirs(log_dir)
 
-logging.config.dictConfig(ail_logger.get_config(name='flask'))
+# ========= LOGS =========#
+
+class FilterLogErrors(logging.Filter):
+    def filter(self, record):
+        # print(dict(record.__dict__))
+        if record.levelname == 'ERROR':
+            if record.msg.startswith('Error on request:'):
+                if 'ssl.SSLEOFError: EOF occurred in violation of protocol' in record.msg:
+                    return False
+        return True
+
+
+logging.config.dictConfig(ail_logger.get_config(name='flask'))
+flask_logger = logging.getLogger()
+ignore_filter = FilterLogErrors()
+for handler in flask_logger.handlers:
+    handler.addFilter(ignore_filter)
 
-# =========       =========#
 
 # =========  TLS  =========#
-ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
+
+ssl_context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
 ssl_context.load_cert_chain(certfile=os.path.join(Flask_dir, 'server.crt'), keyfile=os.path.join(Flask_dir, 'server.key'))
+ssl_context.suppress_ragged_eofs = True
 # print(ssl_context.get_ciphers())
 # =========       =========#
 

var/www/modules/dashboard/Flask_dashboard.py

@@ -11,7 +11,7 @@ import datetime
 import time
 import flask
 
-from flask import Flask, render_template, jsonify, request, Blueprint, url_for
+from flask import Flask, render_template, jsonify, request, Blueprint, url_for, stream_with_context
 
 from Role_Manager import login_admin, login_analyst, login_read_only
 from flask_login import login_required
@@ -38,33 +38,34 @@ max_dashboard_logs = Flask_config.max_dashboard_logs
 dashboard = Blueprint('dashboard', __name__, template_folder='templates')
 
 # ============ FUNCTIONS ============
-
 def event_stream():
     pubsub = r_serv_log.pubsub()
     pubsub.psubscribe("Script" + '.*')
-    for msg in pubsub.listen():
+    try:
+        for msg in pubsub.listen():
+            mtype = msg['type']
+            pattern = msg['pattern']
+            channel = msg['channel']
+            data = msg['data']
 
-        # print(msg)
-        type = msg['type']
-        pattern = msg['pattern']
-        channel = msg['channel']
-        data = msg['data']
+            msg = {'channel': channel, 'type': mtype, 'pattern': pattern, 'data': data}
 
-        msg = {'channel': channel, 'type': type, 'pattern': pattern, 'data': data}
-
-        level = (msg['channel']).split('.')[1]
-        if msg['type'] == 'pmessage' and level != "DEBUG":
-            yield 'data: %s\n\n' % json.dumps(msg)
+            level = (msg['channel']).split('.')[1]
+            if msg['type'] == 'pmessage' and level != "DEBUG":
+                yield 'data: %s\n\n' % json.dumps(msg)
+    except GeneratorExit:
+        print("Generator Exited")
+        pubsub.unsubscribe()
 
 def event_stream_dashboard():
     try:
         while True:
-            # jsonify(row1=get_queues())
             data = {'queues': get_queues()}
             yield f'data: {json.dumps(data)}\n\n'
             time.sleep(1)
     except GeneratorExit:
-        print("Generator Exited")
+        print("Generator dashboard Exited")
+        pass
 
 def get_queues():
     # We may want to put the llen in a pipeline to do only one query.
@@ -117,7 +118,7 @@ def logs():
 @login_required
 @login_read_only
 def _dashboard():
-    return flask.Response(event_stream_dashboard(), content_type="text/event-stream")
+    return flask.Response(stream_with_context(event_stream_dashboard()), content_type="text/event-stream")
 
 @dashboard.route("/_get_last_logs_json")
 @login_required

var/www/modules/dashboard/templates/index.html

@@ -18,7 +18,7 @@
   <script src="{{ url_for('static', filename='js/bootstrap4.min.js')}}"></script>
 
   <script type="text/javascript" src="{{ url_for('static', filename='js/indexjavascript.js')}}"
-      data-urlstuff="{{ url_for('dashboard.stuff') }}" data-urllog="{{ url_for('dashboard.logs') }}">
+      data-urllog="{{ url_for('dashboard.logs') }}">
   </script>
 
   <style>
@@ -38,15 +38,6 @@
 
   <script>
       window.default_minute = {{ default_minute }};
-      window.glob_tabvar = []; // Avoid undefined
-      window.threshold_stucked_module = {{ threshold_stucked_module }}
-      function update_values() {
-          $.getJSON("{{ url_for('dashboard.stuff') }}",
-              function(data) {
-                  window.glob_tabvar = data;
-              });
-      };
-      update_values();
   </script>
 
 </head>
@@ -162,7 +153,11 @@
 
 </body>
 
-<script> var url_showSavedPath = "{{ url_for('investigations_b.get_object_gid') }}"; </script>
+
+
+<script>
+    var url_showSavedPath = "{{ url_for('investigations_b.get_object_gid') }}";
+</script>
 
     <script>
         $("#page-Dashboard").addClass("active");
@@ -317,21 +312,32 @@ function create_queue_table(data) {
     Tablediv.appendChild(table);
 }
 
+//
+//
 
-document.addEventListener("DOMContentLoaded", function() {
-    let eventSource = new EventSource("{{ url_for('dashboard._dashboard') }}");
 
-    eventSource.onmessage = function(event) {
+
+var event_queues
+
+$(document).ready(function() {
+    // Hide Browser Error: connection interrupted while the page was loading
+    $(window).on("beforeunload", function() {
+        event_queues.close();
+        source.close();
+    });
+
+    event_queues = new EventSource("{{ url_for('dashboard._dashboard') }}");
+    event_queues.onmessage = function(event) {
         let data = JSON.parse(event.data);
         create_queue_table(data['queues'])
-
     };
-
-    eventSource.onerror = function(event) {
+    event_queues.onerror = function(event) {
         console.error('EventSource failed:', event);
-        eventSource.close(); // Close the connection
+        event_queues.close();
     };
+
 });
+
 </script>
 
 </html>

var/www/static/js/indexjavascript.js

@@ -140,6 +140,10 @@ source.onmessage = function(event) {
     var feed = JSON.parse( event.data );
     create_log_table(feed);
 };
+source.onerror = function(event) {
+    console.error('EventSource failed:', event);
+    source.close();
+};
 
 function pad_2(number) {
     return (number < 10 ? '0' : '') + number;