/**
* Helper method to remove an Artifact. If the Artifact refers to a directory recursively removes
* the contents of the directory.
*/
protected void deleteOutput(Artifact output) throws IOException {
Path path = output.getPath();
try {
// Optimize for the common case: output artifacts are files.
path.delete();
} catch (IOException e) {
// Only try to recursively delete a directory if the output root is known. This is just a
// sanity check so that we do not start deleting random files on disk.
// TODO(bazel-team): Strengthen this test by making sure that the output is part of the
// output tree.
if (path.isDirectory(Symlinks.NOFOLLOW) && output.getRoot() != null) {
FileSystemUtils.deleteTree(path);
} else {
throw e;
}
}
}
/** If the action might create directories as outputs this method must be called. */
protected void checkOutputsForDirectories(EventHandler eventHandler) {
for (Artifact output : getOutputs()) {
Path path = output.getPath();
String ownerString = Label.print(getOwner().getLabel());
if (path.isDirectory()) {
eventHandler.handle(
new Event(
EventKind.WARNING,
getOwner().getLocation(),
"output '"
+ output.prettyPrint()
+ "' of "
+ ownerString
+ " is a directory; dependency checking of directories is unsound",
ownerString));
}
}
}