[Heartbeat]: add mappings for performance metrics (#26140)

* [Heartbeat]: add mappings for performance metrics

* build new mappings

* address review comments

* update fields

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

heartbeat/_meta/fields.common.yml

@@ -174,6 +174,52 @@
               type: text
             - name: stack
               type: text
+        - name: browser
+          type: group
+          fields:
+            - name: experience
+              type: group
+              fields:
+                - name: name
+                  type: keyword
+                - name: type
+                  type: text
+                  description: >
+                    denotes the 'mark' event
+                - name: start
+                  type: long
+                  description: >
+                    offset of time relative to journey start in milliseconds
+            - name: user_timing
+              type: group
+              fields:
+                - name: name
+                  type: keyword
+                - name: type
+                  type: text
+                  description: >
+                    could be one of mark or measure event types.
+                - name: start
+                  type: long
+                  description: >
+                    offset of time relative to journey start in milliseconds
+                - name: end
+                  type: long
+                  description: >
+                    offset of time relative to journey start in milliseconds
+            - name: layout_shift
+              type: group
+              fields:
+                - name: name
+                  type: keyword
+                - name: score
+                  type: integer
+                - name: exists
+                  type: boolean
+                  description: >
+                    flag that indicates if there was any layout shift events
+                    present on the page.
+
 - key: http
   title: "HTTP monitor"
   description:
@@ -379,12 +425,12 @@
           type: group
           description: Detailed x509 certificate metadata
           fields:
-              - name: version_number
-                type: keyword
-                ignore_above: 1024
-                description: Version of x509 format.
-                example: 3
-                default_field: false
+            - name: version_number
+              type: keyword
+              ignore_above: 1024
+              description: Version of x509 format.
+              example: 3
+              default_field: false
 
 - key: icmp
   title: "ICMP"

heartbeat/docs/fields.asciidoc

@@ -10499,6 +10499,98 @@ type: text
 
 --
 
+
+
+*`synthetics.browser.experience.name`*::
++
+--
+type: keyword
+
+--
+
+*`synthetics.browser.experience.type`*::
++
+--
+denotes the 'mark' event
+
+
+type: text
+
+--
+
+*`synthetics.browser.experience.start`*::
++
+--
+offset of time relative to journey start in milliseconds
+
+
+type: long
+
+--
+
+
+*`synthetics.browser.user_timing.name`*::
++
+--
+type: keyword
+
+--
+
+*`synthetics.browser.user_timing.type`*::
++
+--
+could be one of mark or measure event types.
+
+
+type: text
+
+--
+
+*`synthetics.browser.user_timing.start`*::
++
+--
+offset of time relative to journey start in milliseconds
+
+
+type: long
+
+--
+
+*`synthetics.browser.user_timing.end`*::
++
+--
+offset of time relative to journey start in milliseconds
+
+
+type: long
+
+--
+
+
+*`synthetics.browser.layout_shift.name`*::
++
+--
+type: keyword
+
+--
+
+*`synthetics.browser.layout_shift.score`*::
++
+--
+type: integer
+
+--
+
+*`synthetics.browser.layout_shift.exists`*::
++
+--
+flag that indicates if there was any layout shift events present on the page.
+
+
+type: boolean
+
+--
+
 [[exported-fields-tcp]]
 == TCP layer fields