org.apache.james.jmap.JMAPServer Maven / Gradle / Ivy

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package org.apache.james.jmap;

import static org.apache.james.jmap.BypassAuthOnRequestMethod.bypass;

import java.util.Optional;

import javax.annotation.PreDestroy;
import javax.inject.Inject;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.HierarchicalConfiguration;
import org.apache.james.http.jetty.Configuration;
import org.apache.james.http.jetty.Configuration.Builder;
import org.apache.james.http.jetty.JettyHttpServer;
import org.apache.james.lifecycle.api.Configurable;

import com.github.fge.lambdas.Throwing;

public class JMAPServer implements Configurable {

    private final Optional server;

    @Inject
    private JMAPServer(JMAPConfiguration jmapConfiguration,
                       AuthenticationServlet authenticationServlet, JMAPServlet jmapServlet, DownloadServlet downloadServlet, UploadServlet uploadServlet,
                       AuthenticationFilter authenticationFilter, UserProvisioningFilter userProvisioningFilter, DefaultMailboxesProvisioningFilter defaultMailboxesProvisioningFilter) {
        if (jmapConfiguration.isEnabled()) {
            server = Optional.of(JettyHttpServer.create(
                configurationBuilderFor(jmapConfiguration)
                    .serve(JMAPUrls.AUTHENTICATION)
                        .with(authenticationServlet)
                    .filter(JMAPUrls.AUTHENTICATION)
                        .with(new AllowAllCrossOriginRequests(bypass(authenticationFilter).on("POST").and("OPTIONS").only()))
                        .only()
                    .serve(JMAPUrls.JMAP)
                        .with(jmapServlet)
                    .filter(JMAPUrls.JMAP)
                        .with(new AllowAllCrossOriginRequests(bypass(authenticationFilter).on("OPTIONS").only()))
                        .and(userProvisioningFilter)
                        .and(defaultMailboxesProvisioningFilter)
                        .only()
                    .serveAsOneLevelTemplate(JMAPUrls.DOWNLOAD)
                        .with(downloadServlet)
                    .filterAsOneLevelTemplate(JMAPUrls.DOWNLOAD)
                        .with(new AllowAllCrossOriginRequests(bypass(authenticationFilter).on("OPTIONS").only()))
                        .only()
                    .serve(JMAPUrls.UPLOAD)
                        .with(uploadServlet)
                    .filterAsOneLevelTemplate(JMAPUrls.UPLOAD)
                        .with(new AllowAllCrossOriginRequests(bypass(authenticationFilter).on("OPTIONS").only()))
                        .only()
                    .build()));
        } else {
            server = Optional.empty();
        }
    }

    private Builder configurationBuilderFor(JMAPConfiguration jmapConfiguration) {
        Builder builder = Configuration.builder();
        if (jmapConfiguration.getPort().isPresent()) {
            builder.port(jmapConfiguration.getPort().get());
        } else {
            builder.randomPort();
        }
        return builder;
    }

    @Override
    public void configure(HierarchicalConfiguration config) throws ConfigurationException {
        server.ifPresent(Throwing.consumer(JettyHttpServer::start).sneakyThrow());
    }

    @PreDestroy
    public void stop() {
        server.ifPresent(Throwing.consumer(JettyHttpServer::stop).sneakyThrow());
    }

    public int getPort() {
        return server.map(JettyHttpServer::getPort).orElseThrow(() -> new RuntimeException("JMAP server was disabled. No port bound"));
    }
}