--- /dev/null
+package org.argeo.cms.ui.rcp;
+
+import static java.lang.System.Logger.Level.DEBUG;
+
+import java.io.IOException;
+import java.lang.System.Logger;
+import java.lang.System.Logger.Level;
+import java.net.DatagramSocket;
+import java.net.ServerSocket;
+import java.net.URI;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+
+import org.argeo.api.cms.CmsApp;
+
+import com.sun.net.httpserver.HttpExchange;
+import com.sun.net.httpserver.HttpHandler;
+import com.sun.net.httpserver.HttpServer;
+
+/** Publishes one {@link CmsRcpServlet} per {@link CmsApp}. */
+public class CmsRcpHttpLauncher {
+ private final static Logger logger = System.getLogger(CmsRcpHttpLauncher.class.getName());
+ private CompletableFuture<HttpServer> httpServer = new CompletableFuture<>();
+
+ public void init() {
+
+ }
+
+ public void destroy() {
+ Path runFile = CmsRcpDisplayFactory.getUrlRunFile();
+ try {
+ if (Files.exists(runFile)) {
+ Files.delete(runFile);
+ }
+ } catch (IOException e) {
+ logger.log(Level.ERROR, "Cannot delete " + runFile, e);
+ }
+ }
+
+ public void addCmsApp(CmsApp cmsApp, Map<String, String> properties) {
+ final String contextName = properties.get(CmsApp.CONTEXT_NAME_PROPERTY);
+ if (contextName != null) {
+ httpServer.thenAcceptAsync((httpServer) -> {
+ httpServer.createContext("/" + contextName, new HttpHandler() {
+
+ @Override
+ public void handle(HttpExchange exchange) throws IOException {
+ String path = exchange.getRequestURI().getPath();
+ String uiName = path != null ? path.substring(path.lastIndexOf('/') + 1) : "";
+ CmsRcpDisplayFactory.openCmsApp(cmsApp, uiName, null);
+ exchange.sendResponseHeaders(200, -1);
+ logger.log(Level.DEBUG, "Opened RCP UI " + uiName + " of CMS App /" + contextName);
+ }
+ });
+ }).exceptionally(e -> {
+ logger.log(Level.ERROR, "Cannot register RCO app " + contextName, e);
+ return null;
+ });
+ logger.log(Level.DEBUG, "Registered RCP CMS APP /" + contextName);
+ }
+ }
+
+ public void removeCmsApp(CmsApp cmsApp, Map<String, String> properties) {
+ String contextName = properties.get(CmsApp.CONTEXT_NAME_PROPERTY);
+ if (contextName != null) {
+ httpServer.thenAcceptAsync((httpServer) -> {
+ httpServer.removeContext("/" + contextName);
+ });
+ }
+ }
+
+ public void setHttpServer(HttpServer httpServer) {
+ Integer httpPort = httpServer.getAddress().getPort();
+ String baseUrl = "http://localhost:" + httpPort + "/";
+ Path runFile = CmsRcpDisplayFactory.getUrlRunFile();
+ try {
+ if (!Files.exists(runFile)) {
+ Files.createDirectories(runFile.getParent());
+ // TODO give read permission only to the owner
+ Files.createFile(runFile);
+ } else {
+ URI uri = URI.create(Files.readString(runFile));
+ if (!httpPort.equals(uri.getPort()))
+ if (!isPortAvailable(uri.getPort())) {
+ throw new IllegalStateException("Another CMS is running on " + runFile);
+ } else {
+ logger.log(Level.WARNING,
+ "Run file " + runFile + " found but port of " + uri + " is available. Overwriting...");
+ }
+ }
+ Files.writeString(runFile, baseUrl, StandardCharsets.UTF_8);
+ } catch (IOException e) {
+ throw new RuntimeException("Cannot write run file to " + runFile, e);
+ }
+ logger.log(DEBUG, "RCP available under " + baseUrl + ", written to " + runFile);
+ this.httpServer.complete(httpServer);
+ }
+
+ protected boolean isPortAvailable(int port) {
+ ServerSocket ss = null;
+ DatagramSocket ds = null;
+ try {
+ ss = new ServerSocket(port);
+ ss.setReuseAddress(true);
+ ds = new DatagramSocket(port);
+ ds.setReuseAddress(true);
+ return true;
+ } catch (IOException e) {
+ } finally {
+ if (ds != null) {
+ ds.close();
+ }
+
+ if (ss != null) {
+ try {
+ ss.close();
+ } catch (IOException e) {
+ /* should not be thrown */
+ }
+ }
+ }
+
+ return false;
+ }
+}