For #800 - Adds metrics for the default search engine

app/metrics.yaml

@@ -308,3 +308,53 @@ metrics:
     - fenix-core@mozilla.com
     expires: "2020-03-01"
 
+search.default_engine:
+  code:
+    type: string
+    description: >
+      If the search engine is pre-loaded with Fenix this value
+      will be the search engine identifier. If it's a custom search engine
+      (defined: https://github.com/mozilla-mobile/fenix/issues/1607) the
+      value will be "custom"
+    send_in_pings:
+    - metrics
+    bugs:
+    - 800
+    data_reviews:
+    - https://github.com/mozilla-mobile/fenix/issues/1607
+    notification_emails:
+    - fenix-core@mozilla.com
+    expires: "2019-09-01"
+  name:
+    type: string
+    description: >
+      If the search engine is pre-loaded with Fenix this value
+      will be the search engine name. If it's a custom search engine
+      (defined: https://github.com/mozilla-mobile/fenix/issues/1607) the
+      value will be "custom"
+    send_in_pings:
+    - metrics
+    bugs:
+    - 800
+    data_reviews:
+    - https://github.com/mozilla-mobile/fenix/issues/1607
+    notification_emails:
+    - fenix-core@mozilla.com
+    expires: "2019-09-01"
+  submission_url:
+    type: string
+    description: >
+      If the search engine is pre-loaded with Fenix this value
+      will be he base URL we use to build the search query for the search engine.
+      For example: https://mysearchengine.com/?query=%s. If it's a custom search engine
+      (defined: https://github.com/mozilla-mobile/fenix/issues/1607) the
+      value will be "custom"
+    send_in_pings:
+    - metrics
+    bugs:
+    - 800
+    data_reviews:
+    - https://github.com/mozilla-mobile/fenix/issues/1607
+    notification_emails:
+    - fenix-core@mozilla.com
+    expires: "2019-09-01"

app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt

@@ -13,6 +13,8 @@ import org.mozilla.fenix.GleanMetrics.FindInPage
 import org.mozilla.fenix.GleanMetrics.ContextMenu
 import org.mozilla.fenix.GleanMetrics.QuickActionSheet
 import org.mozilla.fenix.GleanMetrics.Metrics
+import org.mozilla.fenix.GleanMetrics.SearchDefaultEngine
+import org.mozilla.fenix.ext.components
 
 private class EventWrapper<T : Enum<T>>(
     private val recorder: ((Map<T, String>?) -> Unit),
@@ -119,6 +121,18 @@ class GleanMetricsService(private val context: Context) : MetricsService {
             defaultBrowser.set(Browsers.all(context).isDefaultBrowser)
         }
 
+        SearchDefaultEngine.apply {
+            val defaultEngine = context
+                .components
+                .search
+                .searchEngineManager
+                .defaultSearchEngine ?: return@apply
+
+            code.set(defaultEngine.identifier)
+            name.set(defaultEngine.name)
+            submissionUrl.set(defaultEngine.buildSearchUrl(""))
+        }
+
         initialized = true
     }