public final class FileContentType {
public static final MediaType DEFAULT_CONTENT_TYPE_WITH_CHARSET = MediaType.PLAIN_TEXT_UTF_8;
private static final MediaType DEFAULT_CONTENT_TYPE = MediaType.create("text", "plain");
private static final ImmutableMap<String, MediaType> contentTypeMap =
ImmutableMap.<String, MediaType>builder()
.put("png", MediaType.PNG)
.put("gif", MediaType.GIF)
.put("jpg", MediaType.JPEG)
.put("jpeg", MediaType.JPEG)
.put("tiff", MediaType.TIFF)
.put("css", MediaType.CSS_UTF_8)
.put("html", MediaType.HTML_UTF_8)
.put("txt", MediaType.create("text", "plain"))
.put("js", MediaType.JAVASCRIPT_UTF_8)
.put("json", MediaType.create("application", "json"))
.put("pdf", MediaType.PDF)
.put("zip", MediaType.ZIP)
.put("xml", MediaType.create("text", "xml"))
.build();
private final String filename;
private final Optional<Charset> charset;
public FileContentType(final String filename, final Optional<Charset> charset) {
this.filename = filename;
this.charset = charset;
}
public MediaType getContentType() {
Optional<MediaType> optionalType = toContentType(Files.getFileExtension(filename));
Optional<Charset> charset = toCharset(optionalType);
MediaType type = optionalType.or(DEFAULT_CONTENT_TYPE);
if (charset.isPresent() && !type.charset().equals(charset)) {
return type.withCharset(charset.get());
}
return type;
}
private Optional<Charset> toCharset(final Optional<MediaType> type) {
if (charset.isPresent()) {
return charset;
}
if (!type.isPresent()) {
return of(Charsets.UTF_8);
}
return type.get().charset();
}
private Optional<MediaType> toContentType(final String extension) {
return fromNullable(contentTypeMap.get(extension.toLowerCase()));
}
}
public class HttpDiscoveryAnnouncementClient implements DiscoveryAnnouncementClient {
private static final MediaType MEDIA_TYPE_JSON = MediaType.create("application", "json");
private final Provider<URI> discoveryServiceURI;
private final NodeInfo nodeInfo;
private final JsonCodec<Announcement> announcementCodec;
private final AsyncHttpClient httpClient;
@Inject
public HttpDiscoveryAnnouncementClient(
@ForDiscoveryClient Provider<URI> discoveryServiceURI,
NodeInfo nodeInfo,
JsonCodec<Announcement> announcementCodec,
@ForDiscoveryClient AsyncHttpClient httpClient) {
Preconditions.checkNotNull(discoveryServiceURI, "discoveryServiceURI is null");
Preconditions.checkNotNull(nodeInfo, "nodeInfo is null");
Preconditions.checkNotNull(announcementCodec, "announcementCodec is null");
Preconditions.checkNotNull(httpClient, "httpClient is null");
this.nodeInfo = nodeInfo;
this.discoveryServiceURI = discoveryServiceURI;
this.announcementCodec = announcementCodec;
this.httpClient = httpClient;
}
@Override
public CheckedFuture<Duration, DiscoveryException> announce(Set<ServiceAnnouncement> services) {
Preconditions.checkNotNull(services, "services is null");
URI uri = discoveryServiceURI.get();
if (uri == null) {
return Futures.immediateFailedCheckedFuture(
new DiscoveryException("No discovery servers are available"));
}
Announcement announcement =
new Announcement(
nodeInfo.getEnvironment(),
nodeInfo.getNodeId(),
nodeInfo.getPool(),
nodeInfo.getLocation(),
services);
Request request =
preparePut()
.setUri(URI.create(uri + "/v1/announcement/" + nodeInfo.getNodeId()))
.setHeader("User-Agent", nodeInfo.getNodeId())
.setHeader("Content-Type", MEDIA_TYPE_JSON.toString())
.setBodyGenerator(jsonBodyGenerator(announcementCodec, announcement))
.build();
return httpClient.executeAsync(
request,
new DiscoveryResponseHandler<Duration>("Announcement") {
@Override
public Duration handle(Request request, Response response) throws DiscoveryException {
int statusCode = response.getStatusCode();
if (!isSuccess(statusCode)) {
throw new DiscoveryException(
String.format(
"Announcement failed with status code %s: %s",
statusCode, getBodyForError(response)));
}
Duration maxAge = extractMaxAge(response);
return maxAge;
}
});
}
private boolean isSuccess(int statusCode) {
return statusCode / 100 == 2;
}
private static String getBodyForError(Response response) {
try {
return CharStreams.toString(new InputStreamReader(response.getInputStream(), Charsets.UTF_8));
} catch (IOException e) {
return "(error getting body)";
}
}
@Override
public CheckedFuture<Void, DiscoveryException> unannounce() {
URI uri = discoveryServiceURI.get();
if (uri == null) {
return Futures.immediateFailedCheckedFuture(
new DiscoveryException("No discovery servers are available"));
}
Request request =
prepareDelete()
.setUri(URI.create(uri + "/v1/announcement/" + nodeInfo.getNodeId()))
.setHeader("User-Agent", nodeInfo.getNodeId())
.build();
return httpClient.executeAsync(request, new DiscoveryResponseHandler<Void>("Unannouncement"));
}
private Duration extractMaxAge(Response response) {
String header = response.getHeader(HttpHeaders.CACHE_CONTROL);
if (header != null) {
CacheControl cacheControl = CacheControl.valueOf(header);
if (cacheControl.getMaxAge() > 0) {
return new Duration(cacheControl.getMaxAge(), TimeUnit.SECONDS);
}
}
return DEFAULT_DELAY;
}
private class DiscoveryResponseHandler<T> implements ResponseHandler<T, DiscoveryException> {
private final String name;
protected DiscoveryResponseHandler(String name) {
this.name = name;
}
@Override
public T handle(Request request, Response response) {
return null;
}
@Override
public final DiscoveryException handleException(Request request, Exception exception) {
if (exception instanceof InterruptedException) {
return new DiscoveryException(name + " was interrupted");
}
if (exception instanceof CancellationException) {
return new DiscoveryException(name + " was canceled");
}
if (exception instanceof DiscoveryException) {
return (DiscoveryException) exception;
}
return new DiscoveryException(name + " failed", exception);
}
}
}
@Sharable
class HttpServerHandler extends ChannelInboundHandlerAdapter {
private static final Logger logger = LoggerFactory.getLogger(HttpServerHandler.class);
private static final JsonFactory jsonFactory = new JsonFactory();
private static final long TEN_YEARS = DAYS.toMillis(365 * 10);
private static final long ONE_DAY = DAYS.toMillis(1);
private static final long FIVE_MINUTES = MINUTES.toMillis(5);
private static final String RESOURCE_BASE = "org/glowroot/ui/app-dist";
// only null when running tests with glowroot.ui.skip=true (e.g. travis "deploy" build)
private static final @Nullable String RESOURCE_BASE_URL_PREFIX;
private static final ImmutableMap<String, MediaType> mediaTypes =
ImmutableMap.<String, MediaType>builder()
.put("html", MediaType.HTML_UTF_8)
.put("js", MediaType.JAVASCRIPT_UTF_8)
.put("css", MediaType.CSS_UTF_8)
.put("ico", MediaType.ICO)
.put("woff", MediaType.WOFF)
.put("woff2", MediaType.create("application", "font-woff2"))
.put("swf", MediaType.create("application", "vnd.adobe.flash-movie"))
.put("map", MediaType.JSON_UTF_8)
.build();
static {
URL resourceBaseUrl = getUrlForPath(RESOURCE_BASE);
if (resourceBaseUrl == null) {
RESOURCE_BASE_URL_PREFIX = null;
} else {
RESOURCE_BASE_URL_PREFIX = resourceBaseUrl.toExternalForm();
}
}
private final ChannelGroup allChannels;
private final LayoutService layoutService;
private final ImmutableMap<Pattern, HttpService> httpServices;
private final ImmutableList<JsonServiceMapping> jsonServiceMappings;
private final HttpSessionManager httpSessionManager;
private final ThreadLocal</*@Nullable*/ Channel> currentChannel =
new ThreadLocal</*@Nullable*/ Channel>();
HttpServerHandler(
LayoutService layoutService,
Map<Pattern, HttpService> httpServices,
HttpSessionManager httpSessionManager,
List<Object> jsonServices) {
this.layoutService = layoutService;
this.httpServices = ImmutableMap.copyOf(httpServices);
this.httpSessionManager = httpSessionManager;
List<JsonServiceMapping> jsonServiceMappings = Lists.newArrayList();
for (Object jsonService : jsonServices) {
for (Method method : jsonService.getClass().getDeclaredMethods()) {
GET annotationGET = method.getAnnotation(GET.class);
if (annotationGET != null) {
jsonServiceMappings.add(
ImmutableJsonServiceMapping.builder()
.httpMethod(HttpMethod.GET)
.path(annotationGET.value())
.service(jsonService)
.methodName(method.getName())
.build());
}
POST annotationPOST = method.getAnnotation(POST.class);
if (annotationPOST != null) {
jsonServiceMappings.add(
ImmutableJsonServiceMapping.builder()
.httpMethod(HttpMethod.POST)
.path(annotationPOST.value())
.service(jsonService)
.methodName(method.getName())
.build());
}
}
}
this.jsonServiceMappings = ImmutableList.copyOf(jsonServiceMappings);
allChannels = new DefaultChannelGroup(GlobalEventExecutor.INSTANCE);
}
@Override
public void channelActive(ChannelHandlerContext ctx) throws Exception {
allChannels.add(ctx.channel());
super.channelActive(ctx);
}
void close() {
allChannels.close().awaitUninterruptibly();
}
void closeAllButCurrent() {
Channel current = currentChannel.get();
for (Channel channel : allChannels) {
if (channel != current) {
channel.close().awaitUninterruptibly();
}
}
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
FullHttpRequest request = (FullHttpRequest) msg;
logger.debug("messageReceived(): request.uri={}", request.uri());
Channel channel = ctx.channel();
currentChannel.set(channel);
try {
FullHttpResponse response = handleRequest(ctx, request);
if (response != null) {
sendFullResponse(ctx, request, response);
}
} catch (Exception f) {
logger.error(f.getMessage(), f);
FullHttpResponse response = newHttpResponseWithStackTrace(f, INTERNAL_SERVER_ERROR, null);
sendFullResponse(ctx, request, response);
} finally {
currentChannel.remove();
request.release();
}
}
@SuppressWarnings("argument.type.incompatible")
private void sendFullResponse(
ChannelHandlerContext ctx, FullHttpRequest request, FullHttpResponse response)
throws Exception {
boolean keepAlive = HttpUtil.isKeepAlive(request);
if (httpSessionManager.getSessionId(request) != null
&& httpSessionManager.getAuthenticatedUser(request) == null
&& !response.headers().contains("Set-Cookie")) {
httpSessionManager.deleteSessionCookie(response);
}
response.headers().add("Glowroot-Layout-Version", layoutService.getLayoutVersion());
if (response.headers().contains("Glowroot-Port-Changed")) {
// current connection is the only open channel on the old port, keepAlive=false will add
// the listener below to close the channel after the response completes
//
// remove the hacky header, no need to send it back to client
response.headers().remove("Glowroot-Port-Changed");
response.headers().add("Connection", "close");
keepAlive = false;
}
response.headers().add(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes());
if (keepAlive && !request.protocolVersion().isKeepAliveDefault()) {
response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
}
ChannelFuture f = ctx.write(response);
if (!keepAlive) {
f.addListener(ChannelFutureListener.CLOSE);
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
if (HttpServices.shouldLogException(cause)) {
logger.warn(cause.getMessage(), cause);
}
ctx.close();
}
private @Nullable FullHttpResponse handleRequest(
ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
logger.debug("handleRequest(): request.uri={}", request.uri());
QueryStringDecoder decoder = new QueryStringDecoder(request.uri());
String path = decoder.path();
logger.debug("handleRequest(): path={}", path);
FullHttpResponse response = handleIfLoginOrLogoutRequest(path, request);
if (response != null) {
return response;
}
HttpService httpService = getHttpService(path);
if (httpService != null) {
return handleHttpService(ctx, request, httpService);
}
JsonServiceMatcher jsonServiceMatcher = getJsonServiceMatcher(request, path);
if (jsonServiceMatcher != null) {
return handleJsonServiceMappings(
request, jsonServiceMatcher.jsonServiceMapping(), jsonServiceMatcher.matcher());
}
return handleStaticResource(path, request);
}
private @Nullable FullHttpResponse handleIfLoginOrLogoutRequest(
String path, FullHttpRequest request) throws Exception {
if (path.equals("/backend/authenticated-user")) {
// this is only used when running under 'grunt serve'
return handleAuthenticatedUserRequest(request);
}
if (path.equals("/backend/admin-login")) {
return httpSessionManager.login(request, true);
}
if (path.equals("/backend/read-only-login")) {
return httpSessionManager.login(request, false);
}
if (path.equals("/backend/sign-out")) {
return httpSessionManager.signOut(request);
}
return null;
}
private FullHttpResponse handleAuthenticatedUserRequest(FullHttpRequest request)
throws Exception {
String authenticatedUser = httpSessionManager.getAuthenticatedUser(request);
if (authenticatedUser == null) {
return HttpServices.createJsonResponse("null", OK);
} else {
return HttpServices.createJsonResponse("\"" + authenticatedUser + "\"", OK);
}
}
private @Nullable HttpService getHttpService(String path) throws Exception {
for (Entry<Pattern, HttpService> entry : httpServices.entrySet()) {
Matcher matcher = entry.getKey().matcher(path);
if (matcher.matches()) {
return entry.getValue();
}
}
return null;
}
private @Nullable FullHttpResponse handleHttpService(
ChannelHandlerContext ctx, FullHttpRequest request, HttpService httpService)
throws Exception {
if (!httpSessionManager.hasReadAccess(request)
&& !(httpService instanceof UnauthenticatedHttpService)) {
return handleNotAuthenticated(request);
}
boolean isGetRequest = request.method().name().equals(HttpMethod.GET.name());
if (!isGetRequest && !httpSessionManager.hasAdminAccess(request)) {
return handleNotAuthorized();
}
return httpService.handleRequest(ctx, request);
}
private @Nullable JsonServiceMatcher getJsonServiceMatcher(FullHttpRequest request, String path) {
for (JsonServiceMapping jsonServiceMapping : jsonServiceMappings) {
if (!jsonServiceMapping.httpMethod().name().equals(request.method().name())) {
continue;
}
Matcher matcher = jsonServiceMapping.pattern().matcher(path);
if (matcher.matches()) {
return ImmutableJsonServiceMatcher.of(jsonServiceMapping, matcher);
}
}
return null;
}
private FullHttpResponse handleJsonServiceMappings(
FullHttpRequest request, JsonServiceMapping jsonServiceMapping, Matcher matcher)
throws Exception {
if (!httpSessionManager.hasReadAccess(request)) {
return handleNotAuthenticated(request);
}
boolean isGetRequest = request.method().name().equals(HttpMethod.GET.name());
if (!isGetRequest && !httpSessionManager.hasAdminAccess(request)) {
return handleNotAuthorized();
}
String requestText = getRequestText(request);
String[] args = new String[matcher.groupCount()];
for (int i = 0; i < args.length; i++) {
String group = matcher.group(i + 1);
checkNotNull(group);
args[i] = group;
}
logger.debug(
"handleJsonRequest(): serviceMethodName={}, args={}, requestText={}",
jsonServiceMapping.methodName(),
args,
requestText);
Object responseObject;
try {
responseObject =
callMethod(
jsonServiceMapping.service(), jsonServiceMapping.methodName(), args, requestText);
} catch (Exception e) {
return newHttpResponseFromException(e);
}
return buildJsonResponse(responseObject);
}
private FullHttpResponse buildJsonResponse(@Nullable Object responseObject) {
FullHttpResponse response;
if (responseObject == null) {
response = new DefaultFullHttpResponse(HTTP_1_1, OK);
} else if (responseObject instanceof FullHttpResponse) {
response = (FullHttpResponse) responseObject;
} else if (responseObject instanceof String) {
ByteBuf content = Unpooled.copiedBuffer(responseObject.toString(), Charsets.ISO_8859_1);
response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
} else {
logger.warn(
"unexpected type of json service response: {}", responseObject.getClass().getName());
return new DefaultFullHttpResponse(HTTP_1_1, INTERNAL_SERVER_ERROR);
}
response.headers().add(HttpHeaderNames.CONTENT_TYPE, MediaType.JSON_UTF_8);
HttpServices.preventCaching(response);
return response;
}
private FullHttpResponse handleNotAuthenticated(HttpRequest request) {
if (httpSessionManager.getSessionId(request) != null) {
return HttpServices.createJsonResponse("{\"timedOut\":true}", UNAUTHORIZED);
} else {
return new DefaultFullHttpResponse(HTTP_1_1, UNAUTHORIZED);
}
}
private FullHttpResponse handleNotAuthorized() {
return new DefaultFullHttpResponse(HTTP_1_1, FORBIDDEN);
}
private FullHttpResponse handleStaticResource(String path, HttpRequest request)
throws IOException {
URL url = getSecureUrlForPath(RESOURCE_BASE + path);
if (url == null) {
// log at debug only since this is typically just exploit bot spam
logger.debug("unexpected path: {}", path);
return new DefaultFullHttpResponse(HTTP_1_1, NOT_FOUND);
}
Date expires = getExpiresForPath(path);
if (request.headers().contains(HttpHeaderNames.IF_MODIFIED_SINCE) && expires == null) {
// all static resources without explicit expires are versioned and can be safely
// cached forever
return new DefaultFullHttpResponse(HTTP_1_1, NOT_MODIFIED);
}
ByteBuf content = Unpooled.copiedBuffer(Resources.toByteArray(url));
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
if (expires != null) {
response.headers().add(HttpHeaderNames.EXPIRES, expires);
} else {
response.headers().add(HttpHeaderNames.LAST_MODIFIED, new Date(0));
response
.headers()
.add(HttpHeaderNames.EXPIRES, new Date(System.currentTimeMillis() + TEN_YEARS));
}
int extensionStartIndex = path.lastIndexOf('.');
checkState(
extensionStartIndex != -1,
"found path under %s with no extension: %s",
RESOURCE_BASE,
path);
String extension = path.substring(extensionStartIndex + 1);
MediaType mediaType = mediaTypes.get(extension);
checkNotNull(
mediaType, "found extension under %s with no media type: %s", RESOURCE_BASE, extension);
response.headers().add(HttpHeaderNames.CONTENT_TYPE, mediaType);
response.headers().add(HttpHeaderNames.CONTENT_LENGTH, Resources.toByteArray(url).length);
return response;
}
private static @Nullable URL getSecureUrlForPath(String path) {
URL url = getUrlForPath(path);
if (url != null
&& RESOURCE_BASE_URL_PREFIX != null
&& url.toExternalForm().startsWith(RESOURCE_BASE_URL_PREFIX)) {
return url;
}
return null;
}
private static @Nullable URL getUrlForPath(String path) {
ClassLoader classLoader = HttpServerHandler.class.getClassLoader();
if (classLoader == null) {
return ClassLoader.getSystemResource(path);
} else {
return classLoader.getResource(path);
}
}
private static @Nullable Date getExpiresForPath(String path) {
if (path.startsWith("org/glowroot/ui/app-dist/favicon.")) {
return new Date(System.currentTimeMillis() + ONE_DAY);
} else if (path.endsWith(".js.map") || path.startsWith("/sources/")) {
// javascript source maps and source files are not versioned
return new Date(System.currentTimeMillis() + FIVE_MINUTES);
} else {
return null;
}
}
@VisibleForTesting
static FullHttpResponse newHttpResponseFromException(Exception exception) {
Exception e = exception;
if (e instanceof InvocationTargetException) {
Throwable cause = e.getCause();
if (cause instanceof Exception) {
e = (Exception) cause;
}
}
if (e instanceof JsonServiceException) {
// this is an "expected" exception, no need to log
JsonServiceException jsonServiceException = (JsonServiceException) e;
return newHttpResponseWithMessage(
jsonServiceException.getStatus(), jsonServiceException.getMessage());
}
logger.error(e.getMessage(), e);
if (e instanceof SQLException
&& ((SQLException) e).getErrorCode() == ErrorCode.STATEMENT_WAS_CANCELED) {
return newHttpResponseWithMessage(
REQUEST_TIMEOUT,
"Query timed out (timeout is configurable under Configuration > Advanced)");
}
return newHttpResponseWithStackTrace(e, INTERNAL_SERVER_ERROR, null);
}
private static FullHttpResponse newHttpResponseWithMessage(
HttpResponseStatus status, @Nullable String message) {
// this is an "expected" exception, no need to send back stack trace
StringBuilder sb = new StringBuilder();
try {
JsonGenerator jg = jsonFactory.createGenerator(CharStreams.asWriter(sb));
jg.writeStartObject();
jg.writeStringField("message", message);
jg.writeEndObject();
jg.close();
return HttpServices.createJsonResponse(sb.toString(), status);
} catch (IOException f) {
logger.error(f.getMessage(), f);
return new DefaultFullHttpResponse(HTTP_1_1, INTERNAL_SERVER_ERROR);
}
}
private static FullHttpResponse newHttpResponseWithStackTrace(
Exception e, HttpResponseStatus status, @Nullable String simplifiedMessage) {
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
StringBuilder sb = new StringBuilder();
try {
JsonGenerator jg = jsonFactory.createGenerator(CharStreams.asWriter(sb));
jg.writeStartObject();
String message;
if (simplifiedMessage == null) {
Throwable cause = e;
Throwable childCause = cause.getCause();
while (childCause != null) {
cause = childCause;
childCause = cause.getCause();
}
message = cause.getMessage();
} else {
message = simplifiedMessage;
}
jg.writeStringField("message", message);
jg.writeStringField("stackTrace", sw.toString());
jg.writeEndObject();
jg.close();
return HttpServices.createJsonResponse(sb.toString(), status);
} catch (IOException f) {
logger.error(f.getMessage(), f);
return new DefaultFullHttpResponse(HTTP_1_1, INTERNAL_SERVER_ERROR);
}
}
private static @Nullable Object callMethod(
Object object, String methodName, String[] args, String requestText) throws Exception {
List<Class<?>> parameterTypes = Lists.newArrayList();
List<Object> parameters = Lists.newArrayList();
for (int i = 0; i < args.length; i++) {
parameterTypes.add(String.class);
parameters.add(args[i]);
}
Method method = null;
try {
method =
object
.getClass()
.getDeclaredMethod(
methodName, parameterTypes.toArray(new Class[parameterTypes.size()]));
} catch (Exception e) {
// log exception at trace level
logger.trace(e.getMessage(), e);
// try again with requestText
parameterTypes.add(String.class);
parameters.add(requestText);
try {
method =
object
.getClass()
.getDeclaredMethod(
methodName, parameterTypes.toArray(new Class[parameterTypes.size()]));
} catch (Exception f) {
// log exception at debug level
logger.trace(f.getMessage(), f);
throw new NoSuchMethodException(methodName);
}
}
if (logger.isDebugEnabled()) {
String params = Joiner.on(", ").join(parameters);
logger.debug("{}.{}(): {}", object.getClass().getSimpleName(), methodName, params);
}
return method.invoke(object, parameters.toArray(new Object[parameters.size()]));
}
private static String getRequestText(FullHttpRequest request) {
if (request.method() == io.netty.handler.codec.http.HttpMethod.POST) {
return request.content().toString(Charsets.ISO_8859_1);
} else {
int index = request.uri().indexOf('?');
if (index == -1) {
return "";
} else {
return request.uri().substring(index + 1);
}
}
}
@Value.Immutable
@Styles.AllParameters
interface JsonServiceMatcher {
JsonServiceMapping jsonServiceMapping();
Matcher matcher();
}
@Value.Immutable
abstract static class JsonServiceMapping {
abstract HttpMethod httpMethod();
abstract String path();
abstract Object service();
abstract String methodName();
@Value.Derived
Pattern pattern() {
String path = path();
if (path.contains("(")) {
return Pattern.compile(path);
} else {
return Pattern.compile(Pattern.quote(path));
}
}
}
enum HttpMethod {
GET,
POST
}
}