/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.runtimes.dflt.runtime;
import java.util.ArrayList;
import java.util.List;
import com.google.inject.Injector;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.Predicate;
import org.apache.isis.core.commons.lang.Threads;
import org.apache.isis.runtimes.dflt.runtime.installerregistry.InstallerLookup;
import org.apache.isis.runtimes.dflt.runtime.installerregistry.installerapi.EmbeddedWebServerInstaller;
import org.apache.isis.runtimes.dflt.runtime.runner.IsisBootstrapper;
import org.apache.isis.runtimes.dflt.runtime.runner.IsisModule.ViewerList;
import org.apache.isis.runtimes.dflt.runtime.system.IsisSystem;
import org.apache.isis.runtimes.dflt.runtime.system.context.IsisContext;
import org.apache.isis.runtimes.dflt.runtime.viewer.IsisViewer;
import org.apache.isis.runtimes.dflt.runtime.viewer.web.WebAppSpecification;
import org.apache.isis.runtimes.dflt.runtime.web.EmbeddedWebServer;
final class RuntimeBootstrapper implements IsisBootstrapper {
@Override
public void bootstrap(final Injector injector) {
bootstrapSystem(injector);
bootstrapViewers(injector);
}
private void bootstrapSystem(final Injector injector) {
// sufficient just to look it up
@SuppressWarnings("unused")
final IsisSystem system = injector.getInstance(IsisSystem.class);
}
private void bootstrapViewers(final Injector injector) {
final List<IsisViewer> viewers = lookupViewers(injector);
// split viewers into web viewers and non-web viewers
final List<IsisViewer> webViewers = findWebViewers(viewers);
final List<IsisViewer> nonWebViewers = findNonWebViewers(viewers, webViewers);
startNonWebViewers(nonWebViewers);
startWebViewers(injector, webViewers);
}
private List<IsisViewer> lookupViewers(final Injector injector) {
final List<IsisViewer> viewers = injector.getInstance(ViewerList.class).getViewers();
// looking up viewers may have merged in some further config files,
// so update the NOContext global
// REVIEW: would rather inject this
final InstallerLookup installerLookup = injector.getInstance(InstallerLookup.class);
IsisContext.setConfiguration(installerLookup.getConfiguration());
return viewers;
}
private List<IsisViewer> findWebViewers(final List<IsisViewer> viewers) {
final List<IsisViewer> webViewers = new ArrayList<IsisViewer>(viewers);
CollectionUtils.filter(webViewers, new Predicate() {
@Override
public boolean evaluate(final Object object) {
final IsisViewer viewer = (IsisViewer) object;
return viewer.getWebAppSpecification() != null;
}
});
return webViewers;
}
private List<IsisViewer> findNonWebViewers(final List<IsisViewer> viewers, final List<IsisViewer> webViewers) {
final List<IsisViewer> nonWebViewers = new ArrayList<IsisViewer>(viewers);
nonWebViewers.removeAll(webViewers);
return nonWebViewers;
}
/**
* Starts each (non web) {@link IsisViewer viewer} in its own thread.
*/
private void startNonWebViewers(final List<IsisViewer> viewers) {
for (final IsisViewer viewer : viewers) {
final Runnable target = new Runnable() {
@Override
public void run() {
viewer.init();
}
};
Threads.startThread(target, "Viewer");
}
}
/**
* Starts all the web {@link IsisViewer viewer}s in an instance of an
* {@link EmbeddedWebServer}.
*/
private void startWebViewers(final Injector injector, final List<IsisViewer> webViewers) {
if (webViewers.size() == 0) {
return;
}
final InstallerLookup installerLookup = injector.getInstance(InstallerLookup.class);
// TODO: we could potentially offer pluggability here
final EmbeddedWebServerInstaller webServerInstaller = installerLookup.embeddedWebServerInstaller(Isis.DEFAULT_EMBEDDED_WEBSERVER);
final EmbeddedWebServer embeddedWebServer = webServerInstaller.createEmbeddedWebServer();
for (final IsisViewer viewer : webViewers) {
final WebAppSpecification webContainerRequirements = viewer.getWebAppSpecification();
embeddedWebServer.addWebAppSpecification(webContainerRequirements);
}
embeddedWebServer.init();
}
}