LIME-1343 - Added FE Vital Signs logging

Signed-off-by: ElliotMurphyGDS <[email protected]>
govuk-one-login · Jan 13, 2025 · e4ffd71 · e4ffd71
1 parent e581aa7
commit e4ffd71
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Showing 3 changed files with 96 additions and 0 deletions.
diff --git a/deploy/template.yaml b/deploy/template.yaml
@@ -1078,6 +1078,79 @@ Resources:
             Period: 60
             Stat: Sum
 
+  EventLoopDelayMetricFilter:
+    Type: AWS::Logs::MetricFilter
+    Properties:
+      LogGroupName: !Ref ECSAccessLogsGroup
+      FilterPattern: "{($.eventLoopDelay = *)}"
+      MetricTransformations:
+        - MetricValue: $.eventLoopDelay
+          MetricName: EventLoopDelay
+          MetricNamespace: !Sub ${AWS::StackName}/LogMessages
+
+  EventLoopUtilizationIdleMetricFilter:
+    Type: AWS::Logs::MetricFilter
+    Properties:
+      LogGroupName: !Ref ECSAccessLogsGroup
+      FilterPattern: "{ $.eventLoopUtilization.idle = * }"
+      MetricTransformations:
+        - MetricValue: $.eventLoopUtilization.idle
+          MetricName: EventLoopUtilizationIdle
+          MetricNamespace: !Sub ${AWS::StackName}/LogMessages
+
+  EventLoopUtilizationActiveMetricFilter:
+    Type: AWS::Logs::MetricFilter
+    Properties:
+      LogGroupName: !Ref ECSAccessLogsGroup
+      FilterPattern: "{ $.eventLoopUtilization.active = * }"
+      MetricTransformations:
+        - MetricValue: $.eventLoopUtilization.active
+          MetricName: EventLoopUtilizationActive
+          MetricNamespace: !Sub ${AWS::StackName}/LogMessages
+
+  EventLoopUtilizationUtilizationMetricFilter:
+    Type: AWS::Logs::MetricFilter
+    Properties:
+      LogGroupName: !Ref ECSAccessLogsGroup
+      FilterPattern: "{ $.eventLoopUtilization.utilization = * }"
+      MetricTransformations:
+        - MetricValue: $.eventLoopUtilization.utilization
+          MetricName: EventLoopUtilizationUtilization
+          MetricNamespace: !Sub ${AWS::StackName}/LogMessages
+
+  RequestsPerSecondMetricFilter:
+    Type: AWS::Logs::MetricFilter
+    Properties:
+      LogGroupName: !Ref ECSAccessLogsGroup
+      FilterPattern: "{ $.requestsPerSecond.dynamic = * }"
+      MetricTransformations:
+        - MetricValue: $.requestsPerSecond.dynamic
+          MetricName: RequestsPerSecond
+          MetricNamespace: !Sub ${AWS::StackName}/LogMessages
+          Unit: Count/Second
+
+  AvgResponseTimeMetricFilter:
+    Type: AWS::Logs::MetricFilter
+    Properties:
+      LogGroupName: !Ref ECSAccessLogsGroup
+      FilterPattern: "{ $.avgResponseTime.dynamic = * }"
+      MetricTransformations:
+        - MetricValue: $.avgResponseTime.dynamic
+          MetricName: AvgResponseTime
+          MetricNamespace: !Sub ${AWS::StackName}/LogMessages
+          Unit: Count/Second
+
+  MaxConcurrentConnectionsMetricFilter:
+    Type: AWS::Logs::MetricFilter
+    Properties:
+      LogGroupName: !Ref ECSAccessLogsGroup
+      FilterPattern: "{ $.maxConcurrentConnections = * }"
+      MetricTransformations:
+        - MetricValue: $.maxConcurrentConnections
+          MetricName: MaxConcurrentConnections
+          MetricNamespace: !Sub ${AWS::StackName}/LogMessages
+          Unit: Count            
+
   ####################################################################
   #                                                                  #
   # Alarm setup                                                      #

diff --git a/package.json b/package.json
@@ -66,6 +66,7 @@
     "@govuk-one-login/frontend-analytics": "2.0.1",
     "@govuk-one-login/frontend-language-toggle": "1.1.0",
     "@govuk-one-login/frontend-passthrough-headers": "1.1.1",
+    "@govuk-one-login/frontend-vital-signs": "0.0.4",
     "axios": "1.6.1",
     "cfenv": "1.2.4",
     "connect-dynamodb": "3.0.3",

diff --git a/src/app-setup.js b/src/app-setup.js
@@ -14,6 +14,9 @@ const {
 } = require("@govuk-one-login/di-ipv-cri-common-express/src/lib/i18next");
 // Common express relies on 0/1 strings
 const showLanguageToggle = APP.LANGUAGE_TOGGLE_DISABLED === "true" ? "0" : "1";
+const {
+  frontendVitalSignsInitFromApp,
+} = require("@govuk-one-login/frontend-vital-signs");
 
 const init = (app, router) => {
   setAPIConfig({
@@ -88,6 +91,25 @@ const create = (setup) => {
       "views"
     ],
     middlewareSetupFn: (app) => {
+      frontendVitalSignsInitFromApp(app, {
+        interval: 60000,
+        logLevel: "info",
+        metrics: [
+          "requestsPerSecond",
+          "avgResponseTime",
+          "maxConcurrentConnections",
+          "eventLoopDelay",
+          "eventLoopUtilization",
+        ],
+        staticPaths: [
+          /^\/assets\/.*/,
+          "/ga4-assets",
+          "/javascript",
+          "/javascripts",
+          "/images",
+          "/stylesheets",
+        ],
+      });
       app.use(setHeaders);
     },
     dev: true