Try locking fingerprints dir

yim-lee · yim-lee · commit 087800e4da1e · 2021-12-11T18:25:52.000-08:00
diff --git a/Sources/Commands/SwiftTool.swift b/Sources/Commands/SwiftTool.swift
@@ -648,6 +648,8 @@ public class SwiftTool {
             if !fileSystem.exists(sharedFingerprintsDirectory) {
                 try fileSystem.createDirectory(sharedFingerprintsDirectory, recursive: true)
             }
+            // And make sure we can lock the directory (which writes a lock file)
+            try fileSystem.withLock(on: sharedFingerprintsDirectory, type: .exclusive) { }
             return sharedFingerprintsDirectory
         } catch {
             self.observabilityScope.emit(warning: "Failed creating shared fingerprints directory: \(error)")

Original file line number	Diff line number	Diff line change
`@@ -648,6 +648,8 @@ public class SwiftTool {`
`648`	`648`	`if !fileSystem.exists(sharedFingerprintsDirectory) {`
`649`	`649`	`try fileSystem.createDirectory(sharedFingerprintsDirectory, recursive: true)`
`650`	`650`	`}`
	`651`	`+ // And make sure we can lock the directory (which writes a lock file)`
	`652`	`+ try fileSystem.withLock(on: sharedFingerprintsDirectory, type: .exclusive) { }`
`651`	`653`	`return sharedFingerprintsDirectory`
`652`	`654`	`} catch {`
`653`	`655`	`self.observabilityScope.emit(warning: "Failed creating shared fingerprints directory: \(error)")`