@Override
public void doFilter(
@Nonnull ServletRequest request,
@Nonnull ServletResponse response,
@Nonnull FilterChain chain)
throws IOException, ServletException {
final StopWatch stopWatch = new StopWatch();
request.setAttribute(CURRENT_REQUEST_STOP_WATCH_ATTRIBUTE_NAME, stopWatch);
final ScopeMapping globalMapping = _patternToMapping.get(null);
final ScopeMapping specificMapping =
request instanceof HttpServletRequest
? getMappingFor(((HttpServletRequest) request).getRequestURI())
: null;
try {
chain.doFilter(request, response);
} finally {
request.removeAttribute(CURRENT_REQUEST_STOP_WATCH_ATTRIBUTE_NAME);
final Duration duration = stopWatch.getCurrentDuration();
final ServletHealthInterceptor interceptor = _interceptor;
if (interceptor == null
|| interceptor.isRecordAllowed(request, globalMapping, specificMapping)) {
globalMapping.record(null, duration);
if (specificMapping != null) {
final String targetName =
interceptor != null
? interceptor.getSpecificTargetName(request, specificMapping)
: null;
specificMapping.record(targetName, duration);
}
}
}
}
public void setMapping(@Nullable String mappingAsString) {
final Map<Pattern, ScopeMapping> patternToMapping = new LinkedHashMap<>();
final ServletHealthInterceptor interceptor = _interceptor;
if (mappingAsString != null) {
for (String parts : mappingAsString.split("[,\\n\\r]")) {
final String trimmedPart = parts.trim();
if (!trimmedPart.isEmpty()) {
final int lastArrow = trimmedPart.lastIndexOf('>');
if (lastArrow > 0 && lastArrow + 1 < trimmedPart.length()) {
try {
final Pattern pattern = Pattern.compile(trimmedPart.substring(0, lastArrow).trim());
final String name = trimmedPart.substring(lastArrow + 1).trim();
if (name.isEmpty()) {
throw new IllegalArgumentException("Illegal formatted mapping: " + mappingAsString);
}
final Collection<String> possibleSpecificNames =
interceptor != null ? interceptor.getPossibleNames(name) : null;
patternToMapping.put(pattern, new ScopeMapping(name, possibleSpecificNames));
} catch (PatternSyntaxException e) {
throw new IllegalArgumentException(
"Illegal formatted mapping: " + mappingAsString, e);
}
} else {
throw new IllegalArgumentException("Illegal formatted mapping: " + mappingAsString);
}
}
}
}
patternToMapping.put(null, new ScopeMapping(null, Collections.<String>emptyList()));
_nameToMapping = asNameToMapping(patternToMapping.values());
_patternToMapping = unmodifiableMap(patternToMapping);
synchronized (_pathToMappingCache) {
_pathToMappingCache.clear();
}
}
