IOException {
        if (ignoreShas.contains(depName)) {
            // local deps should not have sha files!
            if (getShaFile(jarName).exists()) {
                throw new GradleException("SHA file " + getShaFile(jarName) + " exists for ignored dependency " + depName);
            }
        } else {
            logger.info("Checking sha for {}", jarName);

        Set<File> shaFiles = parentTask.get().getShaFiles();

        for (File dependency : parentTask.get().getDependencies()) {
            String jarName = dependency.getName();
            File shaFile = parentTask.get().getShaFile(jarName);

            if (shaFile.exists() == false) {
                createSha(dependency, jarName, shaFile);
            } else {
                shaFiles.remove(shaFile);
            }
        }