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Added per-project synchronisation.

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This commit is contained in:
Winston Li 2014-11-20 09:19:21 +00:00
parent b51b37f71f
commit 08277baa77
3 changed files with 40 additions and 1 deletions
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2
services/git-bridge/src/uk/ac/ic/wlgitbridge/bridge/WLBridgedProject.java
View file

@ -27,11 +27,13 @@ public class WLBridgedProject {
}
public void buildRepository() throws RepositoryNotFoundException, ServiceNotEnabledException, FailedConnectionException {
writeLatexDataSource.lockForProject(name);
if (repository.getObjectDatabase().exists()) {
updateRepositoryFromSnapshots(repository);
} else {
buildRepositoryFromScratch(repository);
}
writeLatexDataSource.unlockForProject(name);
}
private void updateRepositoryFromSnapshots(Repository repository) throws ServiceNotEnabledException, RepositoryNotFoundException, FailedConnectionException {

4
services/git-bridge/src/uk/ac/ic/wlgitbridge/bridge/WriteLatexDataSource.java
View file

@ -13,6 +13,10 @@ import java.util.List;
*/
public interface WriteLatexDataSource {
void lockForProject(String projectName);
void unlockForProject(String projectName);
/* Called by request thread. */
public boolean repositoryExists(String projectName) throws FailedConnectionException;
public List<WritableRepositoryContents> getWritableRepositories(String projectName) throws FailedConnectionException, InvalidProjectException;

35
services/git-bridge/src/uk/ac/ic/wlgitbridge/writelatex/WriteLatexAPI.java
View file

@ -16,7 +16,11 @@ import uk.ac.ic.wlgitbridge.writelatex.api.request.push.exception.SnapshotPostEx
import uk.ac.ic.wlgitbridge.writelatex.model.WLDataModel;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
/**
* Created by Winston on 16/11/14.
@ -25,20 +29,48 @@ public class WriteLatexAPI implements WriteLatexDataSource {
private final WLDataModel dataModel;
private final PostbackManager postbackManager;
private final Map<String, Lock> projectLocks;
private final Lock projectLocksLock;
public WriteLatexAPI(WLDataModel dataModel) {
this.dataModel = dataModel;
postbackManager = new PostbackManager();
projectLocks = new HashMap<String, Lock>();
projectLocksLock = new ReentrantLock();
}
private Lock getLockForProjectName(String projectName) {
projectLocksLock.lock();
Lock lock = projectLocks.get(projectName);
if (lock == null) {
lock = new ReentrantLock();
projectLocks.put(projectName, lock);
}
projectLocksLock.unlock();
return lock;
}
@Override
public void lockForProject(String projectName) {
getLockForProjectName(projectName).lock();
}
@Override
public void unlockForProject(String projectName) {
getLockForProjectName(projectName).unlock();
}
@Override
public boolean repositoryExists(String projectName) throws FailedConnectionException {
lockForProject(projectName);
SnapshotGetDocRequest snapshotGetDocRequest = new SnapshotGetDocRequest(projectName);
snapshotGetDocRequest.request();
try {
snapshotGetDocRequest.getResult().getVersionID();
} catch (InvalidProjectException e) {
return false;
} finally {
unlockForProject(projectName);
}
return true;
}
@ -46,7 +78,8 @@ public class WriteLatexAPI implements WriteLatexDataSource {
@Override
public List<WritableRepositoryContents> getWritableRepositories(String projectName) throws FailedConnectionException, InvalidProjectException {
System.out.println("Fetching project: " + projectName);
return dataModel.updateProjectWithName(projectName);
List<WritableRepositoryContents> writableRepositoryContents = dataModel.updateProjectWithName(projectName);
return writableRepositoryContents;
}
@Override