Move compatibility layer to separate package (#10)

src/main/java/io/jenkins/servlet/AsyncContextWrapper.java

@@ -0,0 +1,192 @@
+package io.jenkins.servlet;
+
+import io.jenkins.servlet.http.HttpServletRequestWrapper;
+import io.jenkins.servlet.http.HttpServletResponseWrapper;
+import java.util.Objects;
+import javax.servlet.AsyncContext;
+import javax.servlet.AsyncListener;
+import javax.servlet.ServletContext;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class AsyncContextWrapper {
+    public static jakarta.servlet.AsyncContext toJakartaAsyncContext(AsyncContext from) {
+        Objects.requireNonNull(from);
+        return new jakarta.servlet.AsyncContext() {
+            @Override
+            public jakarta.servlet.ServletRequest getRequest() {
+                ServletRequest request = from.getRequest();
+                return request instanceof HttpServletRequest
+                        ? HttpServletRequestWrapper.toJakartaHttpServletRequest(((HttpServletRequest) request))
+                        : io.jenkins.servlet.ServletRequestWrapper.toJakartaServletRequest(request);
+            }
+
+            @Override
+            public jakarta.servlet.ServletResponse getResponse() {
+                ServletResponse response = from.getResponse();
+                return response instanceof HttpServletResponse
+                        ? HttpServletResponseWrapper.toJakartaHttpServletResponse(((HttpServletResponse) response))
+                        : ServletResponseWrapper.toJakartaServletResponse(response);
+            }
+
+            @Override
+            public boolean hasOriginalRequestAndResponse() {
+                return from.hasOriginalRequestAndResponse();
+            }
+
+            @Override
+            public void dispatch() {
+                from.dispatch();
+            }
+
+            @Override
+            public void dispatch(String path) {
+                from.dispatch(path);
+            }
+
+            @Override
+            public void dispatch(jakarta.servlet.ServletContext context, String path) {
+                from.dispatch(ServletContextWrapper.fromJakartServletContext(context), path);
+            }
+
+            @Override
+            public void complete() {
+                from.complete();
+            }
+
+            @Override
+            public void start(Runnable run) {
+                from.start(run);
+            }
+
+            @Override
+            public void addListener(jakarta.servlet.AsyncListener listener) {
+                from.addListener(AsyncListenerWrapper.fromJakartaAsyncListener(listener));
+            }
+
+            @Override
+            public void addListener(
+                    jakarta.servlet.AsyncListener listener,
+                    jakarta.servlet.ServletRequest servletRequest,
+                    jakarta.servlet.ServletResponse servletResponse) {
+                from.addListener(
+                        AsyncListenerWrapper.fromJakartaAsyncListener(listener),
+                        servletRequest instanceof jakarta.servlet.http.HttpServletRequest
+                                ? HttpServletRequestWrapper.fromJakartaHttpServletRequest(
+                                        (jakarta.servlet.http.HttpServletRequest) servletRequest)
+                                : io.jenkins.servlet.ServletRequestWrapper.fromJakartaServletRequest(servletRequest),
+                        servletResponse instanceof jakarta.servlet.http.HttpServletResponse
+                                ? HttpServletResponseWrapper.fromJakartaHttpServletResponse(
+                                        (jakarta.servlet.http.HttpServletResponse) servletResponse)
+                                : ServletResponseWrapper.fromJakartaServletResponse(servletResponse));
+            }
+
+            @Override
+            public <T extends jakarta.servlet.AsyncListener> T createListener(Class<T> clazz) {
+                // TODO implement this
+                throw new UnsupportedOperationException();
+            }
+
+            @Override
+            public void setTimeout(long timeout) {
+                from.setTimeout(timeout);
+            }
+
+            @Override
+            public long getTimeout() {
+                return from.getTimeout();
+            }
+        };
+    }
+
+    public static AsyncContext fromJakartaAsyncContext(jakarta.servlet.AsyncContext from) {
+        Objects.requireNonNull(from);
+        return new AsyncContext() {
+            @Override
+            public ServletRequest getRequest() {
+                jakarta.servlet.ServletRequest request = from.getRequest();
+                return request instanceof jakarta.servlet.http.HttpServletRequest
+                        ? HttpServletRequestWrapper.fromJakartaHttpServletRequest(
+                                (jakarta.servlet.http.HttpServletRequest) request)
+                        : ServletRequestWrapper.fromJakartaServletRequest(request);
+            }
+
+            @Override
+            public ServletResponse getResponse() {
+                jakarta.servlet.ServletResponse response = from.getResponse();
+                return response instanceof jakarta.servlet.http.HttpServletResponse
+                        ? HttpServletResponseWrapper.fromJakartaHttpServletResponse(
+                                (jakarta.servlet.http.HttpServletResponse) response)
+                        : ServletResponseWrapper.fromJakartaServletResponse(response);
+            }
+
+            @Override
+            public boolean hasOriginalRequestAndResponse() {
+                return from.hasOriginalRequestAndResponse();
+            }
+
+            @Override
+            public void dispatch() {
+                from.dispatch();
+            }
+
+            @Override
+            public void dispatch(String path) {
+                from.dispatch(path);
+            }
+
+            @Override
+            public void dispatch(ServletContext context, String path) {
+                from.dispatch(ServletContextWrapper.toJakartaServletContext(context), path);
+            }
+
+            @Override
+            public void complete() {
+                from.complete();
+            }
+
+            @Override
+            public void start(Runnable run) {
+                from.start(run);
+            }
+
+            @Override
+            public void addListener(AsyncListener listener) {
+                from.addListener(AsyncListenerWrapper.toJakartaAsyncListener(listener));
+            }
+
+            @Override
+            public void addListener(
+                    AsyncListener listener, ServletRequest servletRequest, ServletResponse servletResponse) {
+                from.addListener(
+                        AsyncListenerWrapper.toJakartaAsyncListener(listener),
+                        servletRequest instanceof HttpServletRequest
+                                ? HttpServletRequestWrapper.toJakartaHttpServletRequest(
+                                        ((HttpServletRequest) servletRequest))
+                                : io.jenkins.servlet.ServletRequestWrapper.toJakartaServletRequest(servletRequest),
+                        servletResponse instanceof HttpServletResponse
+                                ? HttpServletResponseWrapper.toJakartaHttpServletResponse(
+                                        ((HttpServletResponse) servletResponse))
+                                : ServletResponseWrapper.toJakartaServletResponse(servletResponse));
+            }
+
+            @Override
+            public <T extends AsyncListener> T createListener(Class<T> clazz) {
+                // TODO implement this
+                throw new UnsupportedOperationException();
+            }
+
+            @Override
+            public void setTimeout(long timeout) {
+                from.setTimeout(timeout);
+            }
+
+            @Override
+            public long getTimeout() {
+                return from.getTimeout();
+            }
+        };
+    }
+}

src/main/java/io/jenkins/servlet/AsyncEventWrapper.java

@@ -0,0 +1,24 @@
+package io.jenkins.servlet;
+
+import java.util.Objects;
+import javax.servlet.AsyncEvent;
+
+public class AsyncEventWrapper {
+    public static jakarta.servlet.AsyncEvent toJakartaServletHttpAsyncEvent(AsyncEvent from) {
+        Objects.requireNonNull(from);
+        return new jakarta.servlet.AsyncEvent(
+                AsyncContextWrapper.toJakartaAsyncContext(from.getAsyncContext()),
+                io.jenkins.servlet.ServletRequestWrapper.toJakartaServletRequest(from.getSuppliedRequest()),
+                ServletResponseWrapper.toJakartaServletResponse(from.getSuppliedResponse()),
+                from.getThrowable());
+    }
+
+    public static AsyncEvent fromJakartaServletHttpAsyncEvent(jakarta.servlet.AsyncEvent from) {
+        Objects.requireNonNull(from);
+        return new AsyncEvent(
+                AsyncContextWrapper.fromJakartaAsyncContext(from.getAsyncContext()),
+                ServletRequestWrapper.fromJakartaServletRequest(from.getSuppliedRequest()),
+                ServletResponseWrapper.fromJakartaServletResponse(from.getSuppliedResponse()),
+                from.getThrowable());
+    }
+}

src/main/java/io/jenkins/servlet/AsyncListenerWrapper.java

@@ -0,0 +1,60 @@
+package io.jenkins.servlet;
+
+import java.io.IOException;
+import java.util.Objects;
+import javax.servlet.AsyncEvent;
+import javax.servlet.AsyncListener;
+
+public class AsyncListenerWrapper {
+    public static jakarta.servlet.AsyncListener toJakartaAsyncListener(AsyncListener from) {
+        Objects.requireNonNull(from);
+        return new jakarta.servlet.AsyncListener() {
+
+            @Override
+            public void onComplete(jakarta.servlet.AsyncEvent event) throws IOException {
+                from.onComplete(AsyncEventWrapper.fromJakartaServletHttpAsyncEvent(event));
+            }
+
+            @Override
+            public void onTimeout(jakarta.servlet.AsyncEvent event) throws IOException {
+                from.onTimeout(AsyncEventWrapper.fromJakartaServletHttpAsyncEvent(event));
+            }
+
+            @Override
+            public void onError(jakarta.servlet.AsyncEvent event) throws IOException {
+                from.onError(AsyncEventWrapper.fromJakartaServletHttpAsyncEvent(event));
+            }
+
+            @Override
+            public void onStartAsync(jakarta.servlet.AsyncEvent event) throws IOException {
+                from.onStartAsync(AsyncEventWrapper.fromJakartaServletHttpAsyncEvent(event));
+            }
+        };
+    }
+
+    public static AsyncListener fromJakartaAsyncListener(jakarta.servlet.AsyncListener from) {
+        Objects.requireNonNull(from);
+        return new AsyncListener() {
+
+            @Override
+            public void onComplete(AsyncEvent event) throws IOException {
+                from.onComplete(AsyncEventWrapper.toJakartaServletHttpAsyncEvent(event));
+            }
+
+            @Override
+            public void onTimeout(AsyncEvent event) throws IOException {
+                from.onTimeout(AsyncEventWrapper.toJakartaServletHttpAsyncEvent(event));
+            }
+
+            @Override
+            public void onError(AsyncEvent event) throws IOException {
+                from.onError(AsyncEventWrapper.toJakartaServletHttpAsyncEvent(event));
+            }
+
+            @Override
+            public void onStartAsync(AsyncEvent event) throws IOException {
+                from.onStartAsync(AsyncEventWrapper.toJakartaServletHttpAsyncEvent(event));
+            }
+        };
+    }
+}

src/main/java/io/jenkins/servlet/DispatcherTypeWrapper.java

@@ -0,0 +1,42 @@
+package io.jenkins.servlet;
+
+import java.util.Objects;
+import javax.servlet.DispatcherType;
+
+public class DispatcherTypeWrapper {
+    public static jakarta.servlet.DispatcherType toJakartaDispatcherType(DispatcherType from) {
+        Objects.requireNonNull(from);
+        switch (from) {
+            case FORWARD:
+                return jakarta.servlet.DispatcherType.FORWARD;
+            case INCLUDE:
+                return jakarta.servlet.DispatcherType.INCLUDE;
+            case REQUEST:
+                return jakarta.servlet.DispatcherType.REQUEST;
+            case ASYNC:
+                return jakarta.servlet.DispatcherType.ASYNC;
+            case ERROR:
+                return jakarta.servlet.DispatcherType.ERROR;
+            default:
+                throw new IllegalArgumentException("Unknown DispatcherType: " + from);
+        }
+    }
+
+    public static DispatcherType fromJakartaDispatcherType(jakarta.servlet.DispatcherType from) {
+        Objects.requireNonNull(from);
+        switch (from) {
+            case FORWARD:
+                return DispatcherType.FORWARD;
+            case INCLUDE:
+                return DispatcherType.INCLUDE;
+            case REQUEST:
+                return DispatcherType.REQUEST;
+            case ASYNC:
+                return DispatcherType.ASYNC;
+            case ERROR:
+                return DispatcherType.ERROR;
+            default:
+                throw new IllegalArgumentException("Unknown DispatcherType: " + from);
+        }
+    }
+}

src/main/java/io/jenkins/servlet/FilterChainWrapper.java

@@ -0,0 +1,67 @@
+package io.jenkins.servlet;
+
+import io.jenkins.servlet.http.HttpServletRequestWrapper;
+import io.jenkins.servlet.http.HttpServletResponseWrapper;
+import java.io.IOException;
+import java.util.Objects;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class FilterChainWrapper {
+    public static jakarta.servlet.FilterChain toJakartaFilterChain(FilterChain from) {
+        Objects.requireNonNull(from);
+        return new jakarta.servlet.FilterChain() {
+            @Override
+            public void doFilter(jakarta.servlet.ServletRequest request, jakarta.servlet.ServletResponse response)
+                    throws IOException, jakarta.servlet.ServletException {
+                try {
+                    if (request instanceof jakarta.servlet.http.HttpServletRequest
+                            && response instanceof jakarta.servlet.http.HttpServletResponse) {
+                        jakarta.servlet.http.HttpServletRequest httpRequest =
+                                (jakarta.servlet.http.HttpServletRequest) request;
+                        jakarta.servlet.http.HttpServletResponse httpResponse =
+                                (jakarta.servlet.http.HttpServletResponse) response;
+                        from.doFilter(
+                                HttpServletRequestWrapper.fromJakartaHttpServletRequest(httpRequest),
+                                HttpServletResponseWrapper.fromJakartaHttpServletResponse(httpResponse));
+                    } else {
+                        from.doFilter(
+                                ServletRequestWrapper.fromJakartaServletRequest(request),
+                                ServletResponseWrapper.fromJakartaServletResponse(response));
+                    }
+                } catch (ServletException e) {
+                    throw ServletExceptionWrapper.toJakartaServletException(e);
+                }
+            }
+        };
+    }
+
+    public static FilterChain fromJakartaFilterChain(jakarta.servlet.FilterChain from) {
+        Objects.requireNonNull(from);
+        return new FilterChain() {
+            @Override
+            public void doFilter(ServletRequest request, ServletResponse response)
+                    throws IOException, ServletException {
+                try {
+                    if (request instanceof HttpServletRequest && response instanceof HttpServletResponse) {
+                        HttpServletRequest httpRequest = (HttpServletRequest) request;
+                        HttpServletResponse httpResponse = (HttpServletResponse) response;
+                        from.doFilter(
+                                HttpServletRequestWrapper.toJakartaHttpServletRequest(httpRequest),
+                                HttpServletResponseWrapper.toJakartaHttpServletResponse(httpResponse));
+                    } else {
+                        from.doFilter(
+                                io.jenkins.servlet.ServletRequestWrapper.toJakartaServletRequest(request),
+                                ServletResponseWrapper.toJakartaServletResponse(response));
+                    }
+                } catch (jakarta.servlet.ServletException e) {
+                    throw ServletExceptionWrapper.fromJakartaServletException(e);
+                }
+            }
+        };
+    }
+}