[docseng-32] read synthetics metadata (#30422)

* render synthetics

Signed-off-by: Brian Deutsch <[email protected]>

* update to include cloud foundry

Signed-off-by: Brian Deutsch <[email protected]>

---------

Signed-off-by: Brian Deutsch <[email protected]>

Author: bgdeutsch

layouts/shortcodes/get-metrics-from-git.html

@@ -1,5 +1,44 @@
 {{- $int_name := (.Get 0 ) -}}
+{{- $metric_namespaces := (.Get 1 ) -}}
+{{- if and $metric_namespaces (not (reflect.IsSlice $metric_namespaces)) -}}
+  {{- $metric_namespaces = slice $metric_namespaces -}}
+{{- end -}}
+
 {{- if $int_name -}}
+  <!-- Some edge cases the metadata is from a non-integration source, we get the JSON from websites-sources -->
+   <!-- The datafile in sources needs to follow the convention to match: appid_metadata.json -->
+  {{- $exceptions := slice "synthetics" "cloud-foundry" -}}
+  {{- if in $exceptions $int_name -}}
+    {{- $data := index .Site.Data (print $int_name "_metadata") -}}
+    {{- if $data -}}
+      <table>
+        {{- range $data -}}
+          {{- $metric := . -}}
+          {{- $shouldRender := false -}}
+          {{- if not $metric_namespaces -}}
+            {{- $shouldRender = true -}}
+          {{- else -}}
+            {{- range $metric_namespaces -}}
+              {{- if hasPrefix $metric.metric_name . -}}
+                {{- $shouldRender = true -}}
+              {{- end -}}
+            {{- end -}}
+          {{- end -}}
+
+          {{- if $shouldRender -}}
+            <tr>
+              <td><strong>{{ .metric_name }}</strong> <br>({{ .metric_type }})</td>
+              <td>{{ .description }} {{ with .unit_name }}<br><em>Shown as {{ . }}{{ end }}</em></td>
+            </tr>
+          {{- end -}}
+        {{- end -}}
+      </table>
+    {{- else -}}
+      {{ warnf "%s_metadata.json datafile not found for %s integration." $int_name $int_name }}
+    {{- end -}}
+  {{- else -}}
+
+  <!-- For integrations we get the metrics from the integration page -->
   <!-- if the page is a draft we can skip -->
   {{- if not .Page.Draft -}}
     <!-- if non english page load from english integration -->
@@ -25,4 +64,5 @@
       {{- end -}}
     {{- end -}}
   {{- end -}}
+  {{- end -}}
 {{- end -}}