/**
* Read a chunk of repository connections.
*
* @param rval is the place to put the read policies.
* @param returnIndex is a map from the object id (resource id) and the rval index.
* @param params is the set of parameters.
*/
protected void getRepositoryConnectionsChunk(
RepositoryConnection[] rval, Map returnIndex, ArrayList params) throws ManifoldCFException {
ArrayList list = new ArrayList();
String query =
buildConjunctionClause(list, new ClauseDescription[] {new MultiClause(nameField, params)});
IResultSet set =
performQuery("SELECT * FROM " + getTableName() + " WHERE " + query, list, null, null);
int i = 0;
while (i < set.getRowCount()) {
IResultRow row = set.getRow(i++);
String name = row.getValue(nameField).toString();
int index = ((Integer) returnIndex.get(name)).intValue();
RepositoryConnection rc = new RepositoryConnection();
rc.setIsNew(false);
rc.setName(name);
rc.setDescription((String) row.getValue(descriptionField));
rc.setClassName((String) row.getValue(classNameField));
rc.setACLAuthority((String) row.getValue(groupNameField));
rc.setMaxConnections((int) ((Long) row.getValue(maxCountField)).longValue());
String xml = (String) row.getValue(configField);
if (xml != null && xml.length() > 0) rc.getConfigParams().fromXML(xml);
rval[index] = rc;
}
// Do throttle part
throttleSpecManager.getRows(rval, returnIndex, params);
}
/** Uninstall the manager. */
public void deinstall() throws ManifoldCFException {
beginTransaction();
try {
throttleSpecManager.deinstall();
historyManager.deinstall();
performDrop(null);
} catch (ManifoldCFException e) {
signalRollback();
throw e;
} catch (Error e) {
signalRollback();
throw e;
} finally {
endTransaction();
}
}
/**
* Delete a repository connection.
*
* @param name is the name of the connection to delete. If the name does not exist, no error is
* returned.
*/
public void delete(String name) throws ManifoldCFException {
// Grab a job manager handle. We will need to check if any jobs refer to this connection.
IJobManager jobManager = JobManagerFactory.make(threadContext);
StringSetBuffer ssb = new StringSetBuffer();
ssb.add(getRepositoryConnectionsKey());
ssb.add(getRepositoryConnectionKey(name));
StringSet cacheKeys = new StringSet(ssb);
ICacheHandle ch = cacheManager.enterCache(null, cacheKeys, getTransactionID());
try {
beginTransaction();
try {
// Check if any jobs refer to this connection name
if (jobManager.checkIfReference(name))
throw new ManifoldCFException(
"Can't delete repository connection '" + name + "': existing jobs refer to it");
ManifoldCF.noteConfigurationChange();
throttleSpecManager.deleteRows(name);
historyManager.deleteOwner(name);
ArrayList params = new ArrayList();
String query =
buildConjunctionClause(
params, new ClauseDescription[] {new UnitaryClause(nameField, name)});
performDelete("WHERE " + query, params, null);
cacheManager.invalidateKeys(ch);
} catch (ManifoldCFException e) {
signalRollback();
throw e;
} catch (Error e) {
signalRollback();
throw e;
} finally {
endTransaction();
}
} finally {
cacheManager.leaveCache(ch);
}
}
/** Install the manager. */
public void install() throws ManifoldCFException {
// First, get the authority manager table name and name column
IAuthorityGroupManager authMgr = AuthorityGroupManagerFactory.make(threadContext);
// Always use a loop, and no transaction, as we may need to retry due to upgrade
while (true) {
Map existing = getTableSchema(null, null);
if (existing == null) {
// Install the "objects" table.
HashMap map = new HashMap();
map.put(nameField, new ColumnDescription("VARCHAR(32)", true, false, null, null, false));
map.put(
descriptionField,
new ColumnDescription("VARCHAR(255)", false, true, null, null, false));
map.put(
classNameField, new ColumnDescription("VARCHAR(255)", false, false, null, null, false));
map.put(
groupNameField,
new ColumnDescription(
"VARCHAR(32)",
false,
true,
authMgr.getTableName(),
authMgr.getGroupNameColumn(),
false));
map.put(maxCountField, new ColumnDescription("BIGINT", false, false, null, null, false));
map.put(configField, new ColumnDescription("LONGTEXT", false, true, null, null, false));
performCreate(map, null);
} else {
// Upgrade code
ColumnDescription cd = (ColumnDescription) existing.get(groupNameField);
if (cd == null) {
Map addMap = new HashMap();
addMap.put(
groupNameField,
new ColumnDescription(
"VARCHAR(32)",
false,
true,
authMgr.getTableName(),
authMgr.getGroupNameColumn(),
false));
performAlter(addMap, null, null, null);
}
// Get rid of the authorityName field. When we do this we need to copy into the group name
// field, adding groups if they don't yet exist first
cd = (ColumnDescription) existing.get(authorityNameField);
if (cd != null) {
ArrayList params = new ArrayList();
IResultSet set =
performQuery(
"SELECT " + nameField + "," + authorityNameField + " FROM " + getTableName(),
null,
null,
null);
for (int i = 0; i < set.getRowCount(); i++) {
IResultRow row = set.getRow(i);
String repoName = (String) row.getValue(nameField);
String authName = (String) row.getValue(authorityNameField);
if (authName != null && authName.length() > 0) {
// Attempt to create a matching auth group. This will fail if the group
// already exists
IAuthorityGroup grp = authMgr.create();
grp.setName(authName);
try {
authMgr.save(grp);
} catch (ManifoldCFException e) {
if (e.getErrorCode() == ManifoldCFException.INTERRUPTED) throw e;
// Fall through; the row exists already
}
Map<String, String> map = new HashMap<String, String>();
map.put(groupNameField, authName);
params.clear();
String query =
buildConjunctionClause(
params, new ClauseDescription[] {new UnitaryClause(nameField, repoName)});
performUpdate(map, " WHERE " + query, params, null);
}
}
List<String> deleteList = new ArrayList<String>();
deleteList.add(authorityNameField);
performAlter(null, null, deleteList, null);
}
}
// Install dependent tables.
historyManager.install(getTableName(), nameField);
throttleSpecManager.install(getTableName(), nameField);
// Index management
IndexDescription authorityIndex = new IndexDescription(false, new String[] {groupNameField});
IndexDescription classIndex = new IndexDescription(false, new String[] {classNameField});
// Get rid of indexes that shouldn't be there
Map indexes = getTableIndexes(null, null);
Iterator iter = indexes.keySet().iterator();
while (iter.hasNext()) {
String indexName = (String) iter.next();
IndexDescription id = (IndexDescription) indexes.get(indexName);
if (authorityIndex != null && id.equals(authorityIndex)) authorityIndex = null;
else if (classIndex != null && id.equals(classIndex)) classIndex = null;
else if (indexName.indexOf("_pkey") == -1)
// This index shouldn't be here; drop it
performRemoveIndex(indexName);
}
// Add the ones we didn't find
if (authorityIndex != null) performAddIndex(null, authorityIndex);
if (classIndex != null) performAddIndex(null, classIndex);
break;
}
}
/** Calculate how many repository connections to get at once. */
protected int maxClauseGetRepositoryConnectionsChunk() {
return Math.min(
findConjunctionClauseMax(new ClauseDescription[] {}),
throttleSpecManager.maxClauseGetRows());
}
/**
* Save a repository connection object.
*
* @param object is the object to save.
* @return true if the object was created, false otherwise.
*/
public boolean save(IRepositoryConnection object) throws ManifoldCFException {
StringSetBuffer ssb = new StringSetBuffer();
ssb.add(getRepositoryConnectionsKey());
ssb.add(getRepositoryConnectionKey(object.getName()));
StringSet cacheKeys = new StringSet(ssb);
while (true) {
// Catch deadlock condition
long sleepAmt = 0L;
try {
ICacheHandle ch = cacheManager.enterCache(null, cacheKeys, getTransactionID());
try {
beginTransaction();
try {
// performLock();
// Notify of a change to the configuration
ManifoldCF.noteConfigurationChange();
boolean isNew = object.getIsNew();
// See whether the instance exists
ArrayList params = new ArrayList();
String query =
buildConjunctionClause(
params,
new ClauseDescription[] {new UnitaryClause(nameField, object.getName())});
IResultSet set =
performQuery(
"SELECT * FROM " + getTableName() + " WHERE " + query + " FOR UPDATE",
params,
null,
null);
HashMap values = new HashMap();
values.put(descriptionField, object.getDescription());
values.put(classNameField, object.getClassName());
values.put(groupNameField, object.getACLAuthority());
values.put(maxCountField, new Long((long) object.getMaxConnections()));
String configXML = object.getConfigParams().toXML();
values.put(configField, configXML);
boolean notificationNeeded = false;
boolean isCreated;
if (set.getRowCount() > 0) {
// If the object is supposedly new, it is bad that we found one that already exists.
if (isNew)
throw new ManifoldCFException(
"Repository connection '" + object.getName() + "' already exists");
isCreated = false;
IResultRow row = set.getRow(0);
String oldXML = (String) row.getValue(configField);
if (oldXML == null || !oldXML.equals(configXML)) notificationNeeded = true;
// Update
params.clear();
query =
buildConjunctionClause(
params,
new ClauseDescription[] {new UnitaryClause(nameField, object.getName())});
performUpdate(values, " WHERE " + query, params, null);
throttleSpecManager.deleteRows(object.getName());
} else {
// If the object is not supposed to be new, it is bad that we did not find one.
if (!isNew)
throw new ManifoldCFException(
"Repository connection '" + object.getName() + "' no longer exists");
isCreated = true;
// Insert
values.put(nameField, object.getName());
// We only need the general key because this is new.
performInsert(values, null);
}
// Write secondary table stuff
throttleSpecManager.writeRows(object.getName(), object);
// If notification required, do it.
if (notificationNeeded) {
IJobManager jobManager = JobManagerFactory.make(threadContext);
jobManager.noteConnectionChange(object.getName());
}
cacheManager.invalidateKeys(ch);
return isCreated;
} catch (ManifoldCFException e) {
signalRollback();
throw e;
} catch (Error e) {
signalRollback();
throw e;
} finally {
endTransaction();
}
} finally {
cacheManager.leaveCache(ch);
}
} catch (ManifoldCFException e) {
// Is this a deadlock exception? If so, we want to try again.
if (e.getErrorCode() != ManifoldCFException.DATABASE_TRANSACTION_ABORT) throw e;
sleepAmt = getSleepAmt();
} finally {
sleepFor(sleepAmt);
}
}
}