io.virtdata.docsys.core.DocServer Maven / Gradle / Ivy
package io.virtdata.docsys.core;
import io.virtdata.docsys.DocsysDefaultAppPath;
import io.virtdata.docsys.api.Docs;
import io.virtdata.docsys.api.WebServiceObject;
import io.virtdata.docsys.handlers.FavIconHandler;
import org.eclipse.jetty.rewrite.handler.RedirectRegexRule;
import org.eclipse.jetty.rewrite.handler.RewriteHandler;
import org.eclipse.jetty.server.*;
import org.eclipse.jetty.server.handler.DefaultHandler;
import org.eclipse.jetty.server.handler.HandlerList;
import org.eclipse.jetty.server.handler.ResourceHandler;
import org.eclipse.jetty.servlet.ServletContextHandler;
import org.eclipse.jetty.servlet.ServletHolder;
import org.eclipse.jetty.util.resource.PathResource;
import org.eclipse.jetty.util.resource.Resource;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.server.ServerProperties;
import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.servlet.ServletContainer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.ServletRegistration;
import java.net.MalformedURLException;
import java.net.URL;
import java.nio.file.AccessMode;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
public class DocServer implements Runnable {
private final static Logger logger = LoggerFactory.getLogger(DocServer.class);
private final List basePaths = new ArrayList<>();
private final List servletClasses = new ArrayList<>();
private ServletContextHandler contextHandler;
private ServletHolder servletHolder;
private HandlerList handlers;
private String bindScheme = "http";
private String bindHost = "localhost";
private int bindPort = 12345;
public DocServer withHost(String bindHost) {
this.bindHost = bindHost;
return this;
}
public DocServer withPort(int bindPort) {
this.bindPort = bindPort;
return this;
}
public DocServer withURL(String urlSpec) {
try {
URL url = new URL(urlSpec);
this.bindPort = url.getPort();
this.bindHost = url.getHost();
if (url.getPath() != null && url.getPath().isEmpty()) {
throw new UnsupportedOperationException("You may not specify a path for the hosting URL.");
}
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
return this;
}
public DocServer withScheme(String scheme) {
this.bindScheme = scheme;
return this;
}
private void addWebObject(Class... objects) {
servletClasses.addAll(Arrays.asList(objects));
// String servletClasses = this.servletClasses
// .stream()
// .map(Class::getCanonicalName)
// .collect(Collectors.joining(","));
//
// getServletHolder().setInitParameter(
// "jersey.config.server.provider.classnames",
// servletClasses
// );
// return this;
}
private void loadDynamicEndpoints() {
List serviceObjects = WebObjectLoader.loadWebServiceObjects();
for (WebServiceObject serviceObject : serviceObjects) {
logger.info("Adding web service object: " + serviceObject.toString());
this.addWebObject(serviceObject.getClass());
}
logger.debug("Loaded " + this.servletClasses.size() + " root resources.");
}
private ServletContextHandler getContextHandler() {
if (contextHandler == null) {
contextHandler = new ServletContextHandler();
contextHandler.setContextPath("/*");
}
return contextHandler;
}
private ServletHolder getServletHolder() {
if (servletHolder == null) {
servletHolder = getContextHandler().addServlet(
ServletContainer.class,
"/apps"
);
servletHolder.setInitOrder(0);
}
return servletHolder;
}
public DocServer addPaths(Path... paths) {
for (Path path : paths) {
try {
path.getFileSystem().provider().checkAccess(path, AccessMode.READ);
this.basePaths.add(path);
} catch (Exception e) {
logger.error("Unable to access path " + path.toString());
throw new RuntimeException(e);
}
}
return this;
}
public void run() {
//new InetSocketAddress("")
Server server = new Server(bindPort);
handlers = new HandlerList();
if (this.basePaths.size() == 0 && this.servletClasses.size() == 0) {
logger.warn("No service endpoints or doc paths have been added. Loading dynamically.");
}
RewriteHandler rh = new RewriteHandler();
rh.addRule(new RedirectRegexRule("/","/docs/"));
// rh.addRule(new RedirectPatternRule("/","/docs/"));
handlers.addHandler(rh);
// ShutdownHandler shutdownHandler; // for easy recycles
// Favicon
for (Path basePath : basePaths) {
Path icon = basePath.resolve("/favicon.ico");
if (Files.exists(icon)) {
FavIconHandler favIconHandler = new FavIconHandler(basePaths.get(0) + "/favicon.ico", false);
handlers.addHandler(favIconHandler);
break;
}
}
if (basePaths.size()==0) {
Docs docs = new Docs();
// Load static path contexts which are published within the runtime.
docs.merge(DocsysPathLoader.loadStaticPaths());
// If none claims the "docsys-app" namespace, then install the
// default static copy of the docs app
if (!docs.getPathMap().containsKey("docsys-app")) {
docs.merge(new DocsysDefaultAppPath().getDocs());
}
basePaths.addAll(docs.getPaths());
}
for (Path basePath : basePaths) {
logger.info("Adding path to server: " + basePath.toString());
ResourceHandler resourceHandler = new ResourceHandler();
resourceHandler.setDirAllowed(true);
resourceHandler.setAcceptRanges(true);
resourceHandler.setWelcomeFiles(new String[]{"index.html"});
resourceHandler.setRedirectWelcome(true);
Resource baseResource = new PathResource(basePath);
resourceHandler.setBaseResource(baseResource);
resourceHandler.setCacheControl("no-cache");
handlers.addHandler(resourceHandler);
}
// ResourceConfig statusResourceCfg = new ResourceConfig(DocServerStatusEndpoint.class);
// statusResourceCfg.property("server", this);
// ServletContainer statusResourceContainer = new ServletContainer(statusResourceCfg);
// ServletHolder statusResourceServletHolder = new ServletHolder(statusResourceContainer);
// getContextHandler().addServlet(statusResourceServletHolder, "/_");
logger.info("adding " + servletClasses.size() + " context handlers...");
loadDynamicEndpoints();
ResourceConfig rc = new ResourceConfig();
rc.property("server", this);
ServletContainer container = new ServletContainer(rc);
ServletHolder servlets = new ServletHolder(container);
String classnames = this.servletClasses
.stream()
.map(Class::getCanonicalName)
.collect(Collectors.joining(","));
rc.property(ServerProperties.PROVIDER_CLASSNAMES,classnames);
// servlets.setInitParameter(ServerProperties.PROVIDER_CLASSNAMES,
// classnames
// );
ServletContextHandler sch = new ServletContextHandler();
sch.setContextPath("/*");
sch.addServlet(servlets,"/*");
handlers.addHandler(sch);
// Show contexts
DefaultHandler defaultHandler = new DefaultHandler();
defaultHandler.setShowContexts(true);
defaultHandler.setServeIcon(false);
handlers.addHandler(defaultHandler);
server.setHandler(handlers);
for (Connector connector : server.getConnectors()) {
if (connector instanceof AbstractConnector) {
logger.debug("Setting idle timeout for " + connector.toString() + " to 300,000ms");
((AbstractConnector) connector).setIdleTimeout(300000);
}
}
try {
ServerConnector sc = null;
if (bindScheme.equals("http")) {
sc = new ServerConnector(server);
sc.setPort(bindPort);
sc.setHost(bindHost);
server.setConnectors(new Connector[]{sc});
} else if (bindScheme.equals("https")) {
throw new UnsupportedOperationException("TLS is not supported yet");
}
server.start();
logger.info("Started documentation server at http://" + bindHost + ":" + bindPort + "/");
server.join();
} catch (Exception e) {
logger.error(e.getMessage(),e);
e.printStackTrace(System.out);
System.exit(2);
}
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
for (Class servletClass : this.servletClasses) {
sb.append("- ").append(servletClass.getCanonicalName()).append("\n");
ResourceConfig rc = new ResourceConfig(servletClass);
Set resources = rc.getResources();
for (org.glassfish.jersey.server.model.Resource resource : resources) {
sb.append("resource name:").append(resource.getName()).append("\n");
List resourceMethods = resource.getResourceMethods();
for (ResourceMethod resourceMethod : resourceMethods) {
String rm = resourceMethod.toString();
sb.append("rm:").append(rm);
}
}
}
sb.append("- - - -\n");
for (Handler handler : handlers.getHandlers()) {
String summary = handlerSummary(handler);
sb.append(summary == null ? "NULL SUMMARY" : summary);
sb.append("\n");
}
return sb.toString();
}
private String handlerSummary(Handler handler) {
StringBuilder sb = new StringBuilder();
sb.append("----> handler type ").append(handler.getClass().getSimpleName()).append("\n");
if (handler instanceof ResourceHandler) {
ResourceHandler h = (ResourceHandler) handler;
sb.append(" base resource: ").append(h.getBaseResource().toString())
.append("\n");
sb.append(h.dump());
} else if (handler instanceof ServletContextHandler) {
ServletContextHandler h = (ServletContextHandler) handler;
sb.append(h.dump()).append("\n");
h.getServletContext().getServletRegistrations().forEach(
(k, v) -> {
sb.append("==> servlet type ").append(k).append("\n");
sb.append(getServletSummary(v)).append("\n");
}
);
sb.append("context path:").append(h.getContextPath());
} else if (handler instanceof DefaultHandler) {
DefaultHandler h = (DefaultHandler) handler;
sb.append(h.dump());
}
return sb.toString();
}
private String getServletSummary(ServletRegistration v) {
return v.getClassName() + "('" + v.getName() + "')" + v.getInitParameters().keySet().stream().map(
k -> k + "=" + v.getInitParameters().get(k)).collect(Collectors.joining(","));
}
}
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