Only report a violation when the file exists.

This CL fixes a bug discovered when turning on sandbox from
frameworks/base metalava targets on RBE. The JVM tries to access the
cache directory under $HOME/.cache, and if the directory doesn't exist
(which is the case on RBE), the action still reports a violation.
Bug: b/156613606
Test: ./gradlew. Also built entire topic with and without RBE_METALAVA.
Change-Id: Ia694408004b2cac5e7106ec7a12b8ed68b4db6ba
Merged-In: Ia694408004b2cac5e7106ec7a12b8ed68b4db6ba

1 files changed, 4 insertions, 1 deletions

diff --git a/src/main/java/com/android/tools/metalava/FileReadSandbox.kt b/src/main/java/com/android/tools/metalava/FileReadSandbox.kt
index 02bbae2..a4ebb98 100644
--- a/src/main/java/com/android/tools/metalava/FileReadSandbox.kt
+++ b/src/main/java/com/android/tools/metalava/FileReadSandbox.kt
@@ -172,6 +172,9 @@ internal object FileReadSandbox {
     }
 
     fun isAccessAllowed(file: File): Boolean {
+        if (!file.exists()) {
+            return true
+        }
         val absPath = file.absolutePath
 
         if (allowedPaths.contains(absPath)) {
@@ -312,4 +315,4 @@ internal object FileReadSandbox {
         override fun checkSetFactory() {
         }
     }
-}
\ No newline at end of file
+}