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package net.brutex.xservices.ws.rs;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import javax.ws.rs.core.GenericEntity;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.jcs.JCS;
import org.apache.jcs.access.exception.CacheException;
import org.apache.log4j.Logger;
import org.netbeans.lib.cvsclient.Client;
import org.netbeans.lib.cvsclient.command.CommandAbortedException;
import org.netbeans.lib.cvsclient.command.CommandException;
import org.netbeans.lib.cvsclient.command.checkout.CheckoutCommand;
import org.netbeans.lib.cvsclient.command.checkout.ModuleListInformation;
import org.netbeans.lib.cvsclient.command.log.LogInformation;
import org.netbeans.lib.cvsclient.command.log.RlogCommand;
import org.netbeans.lib.cvsclient.connection.AuthenticationException;
import org.netbeans.lib.cvsclient.event.FileInfoEvent;
import net.brutex.xservices.types.scm.ModuleType;
import net.brutex.xservices.types.scm.FileType;
import net.brutex.xservices.types.scm.Revision;
import net.brutex.xservices.util.BasicCVSListener;
import net.brutex.xservices.util.CVSClient;
/**
* @author Brian Rosenberger
* @since 0.5.0-20120824
*
*/
public class CVSInfoImpl implements CVSInfo {
final Logger logger = Logger.getLogger(CVSInfoImpl.class);
public Response getRepositoryFiles(HttpHeaders h, File f, String modules,
boolean showRevisions,
boolean forceNoCache) {
final List<FileType> list = new ArrayList<FileType>();
String cachekey = "getFiles" + f.toURI().toString();
logger.debug("forceNoCache="+forceNoCache);
List<FileType> cacheresult = (List<FileType>) getCacheInstance().get(
cachekey);
if (!forceNoCache && cacheresult != null) {
// Cache hit
list.addAll(cacheresult);
} else {
// Cache miss
try {
CVSClient cvsclient = new CVSClient(f);
Client client = cvsclient.client;
client.getEventManager().addCVSListener(new BasicCVSListener() {
@Override
public void fileInfoGenerated(FileInfoEvent arg0) {
LogInformation info = (LogInformation) arg0
.getInfoContainer();
FileType cvsfile = new FileType(info.getFile(), info
.getRepositoryFilename(), info.getDescription());
cvsfile.setHeadRevision(info.getHeadRevision());
cvsfile.setBranch(info.getBranch());
cvsfile.setTotalRevisions(info.getTotalRevisions());
for (LogInformation.Revision r : info.getRevisionList()) {
cvsfile.addRevision(new Revision(r.getNumber(), r
.getMessage()));
}
list.add(cvsfile);
}
});
RlogCommand rlog = new RlogCommand();
StringTokenizer tk = new StringTokenizer(modules, ",");
while (tk.hasMoreTokens()) {
rlog.setModule(tk.nextToken());
}
if (rlog.getModules().length == 0)
rlog.setModule("");
rlog.setDefaultBranch(true); // -b Print information about the
// revisions on the default
// branch,
// normally the highest branch
// on
// the trunk.
rlog.setNoTags(true); // -N Do not print the list of tags for
// this
// file. This option can be very useful
// when
// your site uses a lot of tags, so
// rather
// than "more"'ing over 3 pages of tag
// information, the log information is
// presented without tags at all.
rlog.setHeaderAndDescOnly(false); // -t Print only the name of
// the
// rcs file, name of the
// file in
// the working directory,
// head,
// default branch, access
// list,
// locks, symbolic names,
// and
// suffix. + description
// rlog.setRevisionFilter("1.1.");
// rlog.setSuppressHeader(true); // -S Supress log output when
// no
// revisions are selected within a file.
client.executeCommand(rlog, cvsclient.getGlobalOptions());
logger.info("Execute CVS command '" + rlog.getCVSCommand() + "' against '"+cvsclient.getRoot().host+"@" + cvsclient.getRoot().repository+"'");
//need to put a new list into cache as we will filter the result
//afterwards
getCacheInstance().put(cachekey, new ArrayList<FileType>(list));
} catch (ConfigurationException e) {
logger.error("CVS Configuration File '"
+ f.getAbsolutePath() + f.getName() + "'not found.", e);
} catch (CommandAbortedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (AuthenticationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (CommandException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (CacheException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// prepare output after everything is cached
if (!showRevisions) {
for (FileType t : list) {
t.clearRevisionList();
}
}
GenericEntity entity = new GenericEntity<List<FileType>>(list) {};
return Response.ok(entity).build();
}
@Override
public Response getModules(HttpHeaders h, File f, boolean forceNoCache) {
// Try to deliver from Cache
String cachekey = "Modules" + f.toURI().toString();
logger.debug("forceNoCache="+forceNoCache);
List<ModuleType> response = (List<ModuleType>) getCacheInstance().get(
cachekey);
if (!forceNoCache && response != null) {
GenericEntity entity = new GenericEntity<List<ModuleType>>(response) {
};
return Response.ok(entity).build();
}
// -------------------------
try {
CVSClient cvsclient = new CVSClient(f);
Client client = cvsclient.client;
final List<ModuleType> list = new ArrayList<ModuleType>();
client.getEventManager().addCVSListener(new BasicCVSListener() {
public void fileInfoGenerated(FileInfoEvent e) {
ModuleListInformation info = (ModuleListInformation) e
.getInfoContainer();
list.add(new ModuleType(info.getModuleName(), info
.getModuleStatus(), info.getPaths(), info.getType()));
}
});
CheckoutCommand co = new CheckoutCommand();
co.setShowModulesWithStatus(true);
client.executeCommand(co, cvsclient.getGlobalOptions());
logger.info("Execute CVS command '" + co.getCVSCommand() + "' against '"+cvsclient.getRoot().host+"@" + cvsclient.getRoot().repository+"'");
if(list.size()==0) {
logger.warn("Repository '" + cvsclient.getRoot().repository + "' does not have modules");
list.add(new ModuleType("","","",""));
}
GenericEntity entity = new GenericEntity<List<ModuleType>>(list) {
};
getCacheInstance().put(cachekey, list);
return Response.ok(entity).build();
} catch (Exception e) {
e.printStackTrace();
}
return Response.serverError().build();
}
/**
* Get the caching manager for CVS objects
*
* @return The CVSCaching JCS region
*/
public JCS getCacheInstance() {
JCS jcs = null;
final String cacheinstance = "CVSCache";
try {
logger.debug("Getting cache instance named '"+cacheinstance+"'" );
jcs = JCS.getInstance(cacheinstance);
} catch (CacheException e) {
logger.error("Failed to get cache instance", e);
e.printStackTrace();
}
return jcs;
}
}