Revision 6600
Added by Chris Jones about 13 years ago
| src/edu/ucsb/nceas/metacat/dataone/MNodeService.java | ||
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import java.io.InputStream; |
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import java.security.NoSuchAlgorithmException; |
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import java.sql.SQLException; |
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import java.util.ArrayList; |
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import java.util.Calendar; |
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import java.util.Date; |
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import java.util.List; |
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import org.dataone.service.types.v1.MonitorInfo; |
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import org.dataone.service.types.v1.MonitorList; |
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import org.dataone.service.types.v1.Node; |
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import org.dataone.service.types.v1.NodeList; |
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import org.dataone.service.types.v1.NodeReference; |
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import org.dataone.service.types.v1.NodeState; |
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import org.dataone.service.types.v1.NodeType; |
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import org.dataone.service.types.v1.Services; |
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import org.dataone.service.types.v1.Session; |
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import org.dataone.service.types.v1.Subject; |
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import org.dataone.service.types.v1.SubjectList; |
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import org.dataone.service.types.v1.Synchronization; |
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import org.dataone.service.types.v1.SystemMetadata; |
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import org.dataone.service.types.v1.util.ChecksumUtil; |
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} |
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/** |
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* A method to notifiy the Member Node that the authoritative copy of
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* A method to notify the Member Node that the authoritative copy of |
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* system metadata on the Coordinating Nodes has changed. |
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* |
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* @param session Session information that contains the identity of the |
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throws NotImplemented, ServiceFailure, NotAuthorized, InvalidRequest, |
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InvalidToken {
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SystemMetadata currentLocalSysMeta = null; |
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SystemMetadata newSysMeta = null; |
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CNode cn = D1Client.getCN(); |
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NodeList nodeList = null; |
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Subject callingSubject = null; |
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boolean allowed = false; |
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// are we allowed to call this? |
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callingSubject = session.getSubject(); |
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nodeList = cn.listNodes(); |
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for(Node node : nodeList.getNodeList()) {
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// must be a CN |
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if ( node.getType().equals(NodeType.CN)) {
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List<Subject> subjectList = node.getSubjectList(); |
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// the calling subject must be in the subject list |
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if ( subjectList.contains(callingSubject)) {
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allowed = true; |
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} |
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} |
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} |
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if (!allowed ) {
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String msg = "The subject identified by " + callingSubject.getValue() + |
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" is not authorized to call this service."; |
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throw new NotAuthorized("1331", msg);
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} |
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// compare what we have locally to what is sent in the change notification |
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try {
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currentLocalSysMeta = |
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IdentifierManager.getInstance().getSystemMetadata(pid.getValue()); |
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} catch (McdbDocNotFoundException e) {
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String msg = "SystemMetadata for pid " + pid.getValue() + |
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" cpouldn't be updated because it couldn't be found locally: " + |
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e.getMessage(); |
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logMetacat.warn(msg); |
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} |
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if (currentLocalSysMeta.getSerialVersion().longValue() < serialVersion ) {
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try {
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newSysMeta = cn.getSystemMetadata(null, pid); |
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} catch (NotFound e) {
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// huh? you just said you had it |
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logMetacat.error("On updating the local copy of system metadata " +
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"for pid " + pid.getValue() +", the CN reports it is not found." + |
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" The error message was: " + e.getMessage()); |
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} |
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// update the local copy of system metadata for the pid |
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try {
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IdentifierManager.getInstance().updateSystemMetadata(newSysMeta); |
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logMetacat.info("Updated local copy of system metadata for pid " +
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pid.getValue() + " after change notification from the CN."); |
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} catch (McdbDocNotFoundException e) {
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String msg = "SystemMetadata for pid " + pid.getValue() + |
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" cpouldn't be updated because it couldn't be found: " + |
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e.getMessage(); |
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logMetacat.warn(msg); |
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} |
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} |
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} |
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|
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} |
Also available in: Unified diff
Add in the systemMetadataChanged() method in MNodeService to respond to notifications. Only allow subjects from CNs listed in the node list to make the call. Update the local copy of the system metadata document for the given pid.