RegexLogMatcher Class — netty Architecture

Source Code

handler/src/test/java/io/netty/handler/logging/LoggingHandlerTest.java lines 292–318

    private static final class RegexLogMatcher implements ArgumentMatcher<ILoggingEvent> {

        private final String expected;
        private final boolean shouldContainNewline;
        private String actualMsg;

        RegexLogMatcher(String expected) {
            this(expected, false);
        }

        RegexLogMatcher(String expected, boolean shouldContainNewline) {
            this.expected = expected;
            this.shouldContainNewline = shouldContainNewline;
        }

        @Override
        @SuppressWarnings("DynamicRegexReplaceableByCompiledPattern")
        public boolean matches(ILoggingEvent actual) {
            // Match only the first line to skip the validation of hex-dump format.
            actualMsg = actual.getMessage().split("(?s)[\\r\\n]+")[0];
            if (actualMsg.matches(expected)) {
                // The presence of a newline implies a hex-dump was logged
                return actual.getMessage().contains(NEWLINE) == shouldContainNewline;
            }
            return false;
        }
    }