kernel/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 org.apache.commons.logging.Log;
  12 import org.apache.commons.logging.LogFactory;
  13 import org.argeo.cms.CmsException;
  14 import org.argeo.node.ArgeoLogger;
  15 import org.argeo.node.NodeConstants;
  16 import org.argeo.node.NodeDeployment;
  17 import org.argeo.node.NodeInstance;
  18 import org.argeo.node.NodeState;
  19 import org.argeo.util.LangUtils;
  20 import org.osgi.framework.BundleActivator;
  21 import org.osgi.framework.BundleContext;
  22 import org.osgi.framework.Constants;
  23 import org.osgi.framework.ServiceReference;
  24 import org.osgi.service.condpermadmin.ConditionalPermissionAdmin;
  25 import org.osgi.service.log.LogReaderService;
  26
  27 /**
  28  * Activates the {@link Kernel} from the provided {@link BundleContext}. Gives
  29  * access to kernel information for the rest of the bundle (and only it)
  30  */
  31 public class Activator implements BundleActivator {
  32         private final Log log = LogFactory.getLog(Activator.class);
  33
  34         private static Activator instance;
  35
  36         private BundleContext bc;
  37         private ConditionalPermissionAdmin permissionAdmin;
  38         private LogReaderService logReaderService;
  39         // private ConfigurationAdmin configurationAdmin;
  40
  41         private NodeLogger logger;
  42         private CmsState nodeState;
  43         private CmsDeployment nodeDeployment;
  44         private CmsInstance nodeInstance;
  45
  46         @Override
  47         public void start(BundleContext bundleContext) throws Exception {
  48                 instance = this;
  49                 this.bc = bundleContext;
  50                 this.permissionAdmin = getService(ConditionalPermissionAdmin.class);
  51                 this.logReaderService = getService(LogReaderService.class);
  52                 // this.configurationAdmin = getService(ConfigurationAdmin.class);
  53
  54                 initSecurity();// must be first
  55                 initArgeoLogger();
  56                 try {
  57                         initNode();
  58                 } catch (Exception e) {
  59                         e.printStackTrace();
  60                         throw new CmsException("Cannot initialize node", e);
  61                 }
  62         }
  63
  64         private void initSecurity() {
  65                 URL url = getClass().getClassLoader().getResource(KernelConstants.JAAS_CONFIG);
  66                 System.setProperty("java.security.auth.login.config", url.toExternalForm());
  67         }
  68
  69         private void initArgeoLogger() {
  70                 logger = new NodeLogger(logReaderService);
  71                 bc.registerService(ArgeoLogger.class, logger, null);
  72         }
  73
  74         private void initNode() throws IOException {
  75                 // Node state
  76                 Path stateUuidPath = bc.getDataFile("stateUuid").toPath();
  77                 String stateUuid;
  78                 if (Files.exists(stateUuidPath)) {
  79                         stateUuid = Files.readAllLines(stateUuidPath).get(0);
  80                 } else {
  81                         stateUuid = bc.getProperty(Constants.FRAMEWORK_UUID);
  82                         Files.write(stateUuidPath, stateUuid.getBytes());
  83                 }
  84                 nodeState = new CmsState(stateUuid);
  85                 // Object cn;
  86                 // Configuration nodeConf =
  87                 // configurationAdmin.getConfiguration(NodeConstants.NODE_STATE_PID);
  88                 // Dictionary<String, Object> props = nodeConf.getProperties();
  89                 // if (props == null) {
  90                 // if (log.isDebugEnabled())
  91                 // log.debug("Clean node state");
  92                 // Dictionary<String, Object> envProps = new Hashtable<>();
  93                 // // Use the UUID of the first framework run as state UUID
  94                 // cn = bc.getProperty(Constants.FRAMEWORK_UUID);
  95                 // envProps.put(NodeConstants.CN, cn);
  96                 // nodeConf.update(envProps);
  97                 // } else {
  98                 // cn = props.get(NodeConstants.CN);
  99                 // if (cn == null)
 100                 // throw new CmsException("No state UUID available");
 101                 // }
 102                 Dictionary<String, Object> regProps = LangUtils.init(Constants.SERVICE_PID, NodeConstants.NODE_STATE_PID);
 103                 regProps.put(NodeConstants.CN, stateUuid);
 104                 bc.registerService(NodeState.class, nodeState, regProps);
 105
 106                 // Node deployment
 107                 nodeDeployment = new CmsDeployment();
 108                 bc.registerService(NodeDeployment.class, nodeDeployment, null);
 109
 110                 // Node instance
 111                 nodeInstance = new CmsInstance();
 112                 bc.registerService(NodeInstance.class, nodeInstance, null);
 113         }
 114
 115         @Override
 116         public void stop(BundleContext bundleContext) throws Exception {
 117                 nodeInstance.shutdown();
 118                 nodeDeployment.shutdown();
 119                 nodeState.shutdown();
 120
 121                 instance = null;
 122                 this.bc = null;
 123                 this.permissionAdmin = null;
 124                 this.logReaderService = null;
 125                 // this.configurationAdmin = null;
 126         }
 127
 128         private <T> T getService(Class<T> clazz) {
 129                 ServiceReference<T> sr = bc.getServiceReference(clazz);
 130                 if (sr == null)
 131                         throw new CmsException("No service available for " + clazz);
 132                 return bc.getService(sr);
 133         }
 134
 135         public static NodeState getNodeState() {
 136                 return instance.nodeState;
 137         }
 138
 139         public String[] getLocales() {
 140                 // TODO optimize?
 141                 List<Locale> locales = getNodeState().getLocales();
 142                 String[] res = new String[locales.size()];
 143                 for (int i = 0; i < locales.size(); i++)
 144                         res[i] = locales.get(i).toString();
 145                 return res;
 146         }
 147
 148 }