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