Bug 1894702 - "hg id --id" is called many times when building geckoview. r=gl,android-reviewers,pollymce,tthibaud

Differential Revision: https://phabricator.services.mozilla.com/D217717

mobile/android/android-components/plugins/config/src/main/java/ConfigPlugin.kt

@@ -18,6 +18,9 @@ class ConfigPlugin : Plugin<Settings> {
 
 object Config {
 
+    @JvmStatic
+    val vcsHash by lazy { readVcsHash() }
+
     @JvmStatic
     private fun generateDebugVersionName(): String {
         val today = Date()
@@ -172,8 +175,7 @@ object Config {
      * Returns the git or hg hash of the currently checked out revision. If there are uncommitted changes,
      * a "+" will be appended to the hash, e.g. "c8ba05ad0+".
      */
-    @JvmStatic
-    fun getVcsHash(): String {
+    private fun readVcsHash(): String {
         val gitRevision: String
         try {
             val revisionCmd = arrayOf("git", "rev-parse", "--short", "HEAD")
@@ -189,7 +191,6 @@ object Config {
         val status = execReadStandardOutOrThrow(statusCmd)
         val hasUnstagedChanges = status.isNotBlank()
         val statusSuffix = if (hasUnstagedChanges) "+" else ""
-
         return "git-$gitRevision$statusSuffix"
     }
 

mobile/android/fenix/app/build.gradle

@@ -125,7 +125,7 @@ android {
         if (gradle.ext.vcsHashFileContent) {
             buildConfigField "String", "VCS_HASH", "hg-\"${gradle.ext.vcsHashFileContent}\""
         } else {
-            buildConfigField "String", "VCS_HASH", "\"${Config.getVcsHash()}\""
+            buildConfigField "String", "VCS_HASH", "\"${Config.vcsHash}\""
         }
 
         if (gradle.hasProperty("localProperties.autosignReleaseWithDebugKey")) {

mobile/android/focus-android/app/build.gradle

@@ -82,7 +82,7 @@ android {
             if (gradle.ext.vcsHashFileContent) {
                 buildConfigField "String", "VCS_HASH", "hg-\"${gradle.ext.vcsHashFileContent}\""
             } else {
-                buildConfigField "String", "VCS_HASH", "\"${Config.getVcsHash()}\""
+                buildConfigField "String", "VCS_HASH", "\"${Config.vcsHash}\""
             }
 
             if (gradle.hasProperty("localProperties.autosignReleaseWithDebugKey")) {