DigestCaptureUpdateListener Class — spring-boot Architecture

Source Code

buildpack/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/docker/DockerApi.java lines 571–587

	private static final class DigestCaptureUpdateListener implements UpdateListener<ProgressUpdateEvent> {

		private static final String PREFIX = "Digest:";

		private @Nullable String digest;

		@Override
		public void onUpdate(ProgressUpdateEvent event) {
			String status = event.getStatus();
			if (status != null && status.startsWith(PREFIX)) {
				String digest = status.substring(PREFIX.length()).trim();
				Assert.state(this.digest == null || this.digest.equals(digest), "Different digests IDs provided");
				this.digest = digest;
			}
		}

	}