Activator.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.io.IOException;
   4 import java.net.URL;
   5 import java.nio.file.Files;
   6 import java.nio.file.Path;
   7 import java.util.Dictionary;
   8 import java.util.List;
   9 import java.util.Locale;
  10
  11 import javax.security.auth.login.Configuration;
  12
  13 import org.apache.commons.logging.Log;
  14 import org.apache.commons.logging.LogFactory;
  15 import org.argeo.cms.CmsException;
  16 import org.argeo.node.ArgeoLogger;
  17 import org.argeo.node.NodeConstants;
  18 import org.argeo.node.NodeDeployment;
  19 import org.argeo.node.NodeInstance;
  20 import org.argeo.node.NodeState;
  21 import org.argeo.util.LangUtils;
  22 import org.ietf.jgss.GSSCredential;
  23 import org.osgi.framework.BundleActivator;
  24 import org.osgi.framework.BundleContext;
  25 import org.osgi.framework.Constants;
  26 import org.osgi.framework.ServiceReference;
  27 import org.osgi.service.log.LogReaderService;
  28 import org.osgi.service.useradmin.UserAdmin;
  29 import org.osgi.util.tracker.ServiceTracker;
  30
  31 /**
  32  * Activates the kernel. Gives access to kernel information for the rest of the
  33  * bundle (and only it)
  34  */
  35 public class Activator implements BundleActivator {
  36         private final static Log log = LogFactory.getLog(Activator.class);
  37
  38         private static Activator instance;
  39
  40         private BundleContext bc;
  41
  42         private LogReaderService logReaderService;
  43
  44         private NodeLogger logger;
  45         private CmsState nodeState;
  46         private CmsDeployment nodeDeployment;
  47         private CmsInstance nodeInstance;
  48
  49         private ServiceTracker<UserAdmin, NodeUserAdmin> userAdminSt;
  50
  51         @Override
  52         public void start(BundleContext bundleContext) throws Exception {
  53                 Runtime.getRuntime().addShutdownHook(new CmsShutdown());
  54                 instance = this;
  55                 this.bc = bundleContext;
  56                 this.logReaderService = getService(LogReaderService.class);
  57
  58                 try {
  59                         initSecurity();
  60                         initArgeoLogger();
  61                         initNode();
  62
  63                         userAdminSt = new ServiceTracker<>(instance.bc, UserAdmin.class, null);
  64                         userAdminSt.open();
  65                         log.debug("Kernel bundle started");
  66                 } catch (Throwable e) {
  67                         log.error("## FATAL: CMS activator failed", e);
  68                 }
  69         }
  70
  71         private void initSecurity() {
  72                 if (System.getProperty(KernelConstants.JAAS_CONFIG_PROP) == null) {
  73                         String jaasConfig = KernelConstants.JAAS_CONFIG;
  74                         URL url = getClass().getClassLoader().getResource(jaasConfig);
  75                         // System.setProperty(KernelConstants.JAAS_CONFIG_PROP,
  76                         // url.toExternalForm());
  77                         KernelUtils.setJaasConfiguration(url);
  78                 }
  79                 // explicitly load JAAS configuration
  80                 Configuration.getConfiguration();
  81
  82                 // ConditionalPermissionAdmin permissionAdmin = bc
  83                 // .getService(bc.getServiceReference(ConditionalPermissionAdmin.class));
  84                 // ConditionalPermissionUpdate update =
  85                 // permissionAdmin.newConditionalPermissionUpdate();
  86                 // // Self
  87                 // update.getConditionalPermissionInfos()
  88                 // .add(permissionAdmin.newConditionalPermissionInfo(null,
  89                 // new ConditionInfo[] {
  90                 // new ConditionInfo(BundleLocationCondition.class.getName(), new
  91                 // String[] { "*" }) },
  92                 // new PermissionInfo[] { new
  93                 // PermissionInfo(AllPermission.class.getName(), null, null) },
  94                 // ConditionalPermissionInfo.ALLOW));
  95                 //
  96         }
  97
  98         private void initArgeoLogger() {
  99                 logger = new NodeLogger(logReaderService);
 100                 bc.registerService(ArgeoLogger.class, logger, null);
 101         }
 102
 103         private void initNode() throws IOException {
 104                 // Node state
 105                 Path stateUuidPath = bc.getDataFile("stateUuid").toPath();
 106                 String stateUuid;
 107                 if (Files.exists(stateUuidPath)) {
 108                         stateUuid = Files.readAllLines(stateUuidPath).get(0);
 109                 } else {
 110                         stateUuid = bc.getProperty(Constants.FRAMEWORK_UUID);
 111                         Files.write(stateUuidPath, stateUuid.getBytes());
 112                 }
 113                 nodeState = new CmsState(stateUuid);
 114                 Dictionary<String, Object> regProps = LangUtils.dico(Constants.SERVICE_PID, NodeConstants.NODE_STATE_PID);
 115                 regProps.put(NodeConstants.CN, stateUuid);
 116                 bc.registerService(NodeState.class, nodeState, regProps);
 117
 118                 // Node deployment
 119                 nodeDeployment = new CmsDeployment();
 120                 bc.registerService(NodeDeployment.class, nodeDeployment, null);
 121
 122                 // Node instance
 123                 nodeInstance = new CmsInstance();
 124                 bc.registerService(NodeInstance.class, nodeInstance, null);
 125         }
 126
 127         @Override
 128         public void stop(BundleContext bundleContext) throws Exception {
 129                 try {
 130                         if (nodeInstance != null)
 131                                 nodeInstance.shutdown();
 132                         if (nodeDeployment != null)
 133                                 nodeDeployment.shutdown();
 134                         if (nodeState != null)
 135                                 nodeState.shutdown();
 136
 137                         if (userAdminSt != null)
 138                                 userAdminSt.close();
 139
 140                         instance = null;
 141                         this.bc = null;
 142                         this.logReaderService = null;
 143                         // this.configurationAdmin = null;
 144                 } catch (Exception e) {
 145                         log.error("CMS activator shutdown failed", e);
 146                 }
 147         }
 148
 149         private <T> T getService(Class<T> clazz) {
 150                 ServiceReference<T> sr = bc.getServiceReference(clazz);
 151                 if (sr == null)
 152                         throw new CmsException("No service available for " + clazz);
 153                 return bc.getService(sr);
 154         }
 155
 156         public static NodeState getNodeState() {
 157                 return instance.nodeState;
 158         }
 159
 160         public static GSSCredential getAcceptorCredentials() {
 161                 return getNodeUserAdmin().getAcceptorCredentials();
 162         }
 163
 164         public static boolean isSingleUser() {
 165                 return getNodeUserAdmin().isSingleUser();
 166         }
 167
 168         public static UserAdmin getUserAdmin() {
 169                 return (UserAdmin) getNodeUserAdmin();
 170         }
 171
 172         public static String getHttpProxySslHeader() {
 173                 return KernelUtils.getFrameworkProp(NodeConstants.HTTP_PROXY_SSL_DN);
 174         }
 175
 176         private static NodeUserAdmin getNodeUserAdmin() {
 177                 NodeUserAdmin res;
 178                 try {
 179                         res = instance.userAdminSt.waitForService(60000);
 180                 } catch (InterruptedException e) {
 181                         throw new CmsException("Cannot retrieve Node user admin", e);
 182                 }
 183                 if (res == null)
 184                         throw new CmsException("No Node user admin found");
 185
 186                 return res;
 187                 // ServiceReference<UserAdmin> sr =
 188                 // instance.bc.getServiceReference(UserAdmin.class);
 189                 // NodeUserAdmin userAdmin = (NodeUserAdmin) instance.bc.getService(sr);
 190                 // return userAdmin;
 191
 192         }
 193
 194         // static CmsSecurity getCmsSecurity() {
 195         // return instance.nodeSecurity;
 196         // }
 197
 198         public String[] getLocales() {
 199                 // TODO optimize?
 200                 List<Locale> locales = getNodeState().getLocales();
 201                 String[] res = new String[locales.size()];
 202                 for (int i = 0; i < locales.size(); i++)
 203                         res[i] = locales.get(i).toString();
 204                 return res;
 205         }
 206
 207 }