Activator.java

   1 package org.argeo.cms.internal.kernel;
   2
   3 import java.io.IOException;
   4 import java.nio.file.Files;
   5 import java.nio.file.Path;
   6 import java.util.Dictionary;
   7 import java.util.List;
   8 import java.util.Locale;
   9
  10 import org.apache.commons.logging.Log;
  11 import org.apache.commons.logging.LogFactory;
  12 import org.argeo.cms.CmsException;
  13 import org.argeo.node.ArgeoLogger;
  14 import org.argeo.node.NodeConstants;
  15 import org.argeo.node.NodeDeployment;
  16 import org.argeo.node.NodeInstance;
  17 import org.argeo.node.NodeState;
  18 import org.argeo.util.LangUtils;
  19 import org.ietf.jgss.GSSCredential;
  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.log.LogReaderService;
  25
  26 /**
  27  * Activates the {@link Kernel} from the provided {@link BundleContext}. Gives
  28  * access to kernel information for the rest of the bundle (and only it)
  29  */
  30 public class Activator implements BundleActivator {
  31         private final static Log log = LogFactory.getLog(Activator.class);
  32
  33         private static Activator instance;
  34
  35         private BundleContext bc;
  36         private CmsSecurity nodeSecurity;
  37         private LogReaderService logReaderService;
  38         // private ConfigurationAdmin configurationAdmin;
  39
  40         private NodeLogger logger;
  41         private CmsState nodeState;
  42         private CmsDeployment nodeDeployment;
  43         private CmsInstance nodeInstance;
  44
  45         @Override
  46         public void start(BundleContext bundleContext) throws Exception {
  47                 instance = this;
  48                 this.bc = bundleContext;
  49                 this.logReaderService = getService(LogReaderService.class);
  50                 // this.configurationAdmin = getService(ConfigurationAdmin.class);
  51
  52                 try {
  53                         nodeSecurity = new CmsSecurity();
  54                         initArgeoLogger();
  55                         initNode();
  56                 } catch (Exception e) {
  57                         log.error("## FATAL: CMS activator failed", e);
  58                         // throw new CmsException("Cannot initialize node", e);
  59                 }
  60         }
  61
  62         private void initArgeoLogger() {
  63                 logger = new NodeLogger(logReaderService);
  64                 bc.registerService(ArgeoLogger.class, logger, null);
  65         }
  66
  67         private void initNode() throws IOException {
  68                 // Node state
  69                 Path stateUuidPath = bc.getDataFile("stateUuid").toPath();
  70                 String stateUuid;
  71                 if (Files.exists(stateUuidPath)) {
  72                         stateUuid = Files.readAllLines(stateUuidPath).get(0);
  73                 } else {
  74                         stateUuid = bc.getProperty(Constants.FRAMEWORK_UUID);
  75                         Files.write(stateUuidPath, stateUuid.getBytes());
  76                 }
  77                 nodeState = new CmsState(stateUuid);
  78                 Dictionary<String, Object> regProps = LangUtils.dico(Constants.SERVICE_PID, NodeConstants.NODE_STATE_PID);
  79                 regProps.put(NodeConstants.CN, stateUuid);
  80                 bc.registerService(NodeState.class, nodeState, regProps);
  81
  82                 // Node deployment
  83                 nodeDeployment = new CmsDeployment();
  84                 bc.registerService(NodeDeployment.class, nodeDeployment, null);
  85
  86                 // Node instance
  87                 nodeInstance = new CmsInstance();
  88                 bc.registerService(NodeInstance.class, nodeInstance, null);
  89         }
  90
  91         @Override
  92         public void stop(BundleContext bundleContext) throws Exception {
  93                 nodeInstance.shutdown();
  94                 nodeDeployment.shutdown();
  95                 nodeState.shutdown();
  96
  97                 instance = null;
  98                 this.bc = null;
  99                 this.logReaderService = null;
 100                 // this.configurationAdmin = null;
 101         }
 102
 103         private <T> T getService(Class<T> clazz) {
 104                 ServiceReference<T> sr = bc.getServiceReference(clazz);
 105                 if (sr == null)
 106                         throw new CmsException("No service available for " + clazz);
 107                 return bc.getService(sr);
 108         }
 109
 110         public static NodeState getNodeState() {
 111                 return instance.nodeState;
 112         }
 113
 114         public static GSSCredential getAcceptorCredentials() {
 115                 return getCmsSecurity().getServerCredentials();
 116         }
 117
 118         static CmsSecurity getCmsSecurity() {
 119                 return instance.nodeSecurity;
 120         }
 121
 122         public String[] getLocales() {
 123                 // TODO optimize?
 124                 List<Locale> locales = getNodeState().getLocales();
 125                 String[] res = new String[locales.size()];
 126                 for (int i = 0; i < locales.size(); i++)
 127                         res[i] = locales.get(i).toString();
 128                 return res;
 129         }
 130
 131 }