ProfilesValidator Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/context/config/ProfilesValidator.java lines 41–96

final class ProfilesValidator implements BindHandler {

	private static final String ALLOWED_CHARS = "-_.+@";

	private final boolean validate;

	private ProfilesValidator(boolean validate) {
		this.validate = validate;
	}

	@Override
	public Object onSuccess(ConfigurationPropertyName name, Bindable<?> target, BindContext context, Object result) {
		validate(result);
		return result;
	}

	void validate(Object value, Supplier<String> wrappedExceptionMessage) {
		try {
			validate(value);
		}
		catch (IllegalStateException ex) {
			throw new IllegalStateException(wrappedExceptionMessage.get(), ex);
		}
	}

	private void validate(@Nullable Object value) {
		if (!this.validate) {
			return;
		}
		if (value instanceof Collection<?> list) {
			list.forEach(this::validate);
			return;
		}
		if (value instanceof Map<?, ?> map) {
			map.forEach((k, v) -> validate(v));
			return;
		}
		String profile = (value != null) ? value.toString() : null;
		Assert.state(StringUtils.hasText(profile), "Invalid empty profile");
		for (int i = 0; i < profile.length(); i++) {
			int codePoint = profile.codePointAt(i);
			boolean isAllowedChar = ALLOWED_CHARS.indexOf(codePoint) != -1;
			Assert.state(isAllowedChar || Character.isLetterOrDigit(codePoint),
					() -> "Profile '%s' must contain a letter, digit or allowed char (%s)".formatted(profile,
							Arrays.stream(ALLOWED_CHARS.split("")).collect(Collectors.joining("', '", "'", "'"))));
			Assert.state((i > 0 && i < profile.length() - 1) || Character.isLetterOrDigit(codePoint),
					() -> "Profile '%s' must start and end with a letter or digit".formatted(profile));
		}

	}

	static ProfilesValidator get(Binder binder) {
		return new ProfilesValidator(binder.bind("spring.profiles.validate", Boolean.class).orElse(true));
	}

}