* generated a log message, but the docs warn that "generating caller
* location information is extremely slow and should be avoided unless
* execution speed is not an issue."
*/
CTConnection conn = null;
try {
conn = pool.borrowObject(SYSTEM_KS);
Cassandra.Client client = conn.getClient();
KsDef ksDef;
try {
client.set_keyspace(keySpaceName);
ksDef = client.describe_keyspace(keySpaceName);
} catch (NotFoundException e) {
log.debug(lp + "Keyspace {} does not exist, not attempting to truncate.", keySpaceName);
return;
} catch (InvalidRequestException e) {
log.debug(lp + "InvalidRequestException when attempting to describe keyspace {}, not attempting to truncate.", keySpaceName);
return;
}
if (null == ksDef) {
log.debug(lp + "Received null KsDef for keyspace {}; not truncating its CFs", keySpaceName);
return;
}
List<CfDef> cfDefs = ksDef.getCf_defs();
if (null == cfDefs) {
log.debug(lp + "Received empty CfDef list for keyspace {}; not truncating CFs", keySpaceName);
return;
}
for (CfDef cfDef : ksDef.getCf_defs()) {
client.truncate(cfDef.name);
log.info(lp + "Truncated CF {} in keyspace {}", cfDef.name, keySpaceName);
}
/*
* Clearing the CTConnectionPool is unnecessary. This method
* removes no keyspaces. All open Cassandra connections will
* remain valid.
*/
} catch (Exception e) {
throw new TemporaryStorageException(e);
} finally {
if (conn != null && conn.getClient() != null) {
try {
conn.getClient().set_keyspace(SYSTEM_KS);
} catch (InvalidRequestException e) {
log.warn("Failed to reset keyspace", e);
} catch (TException e) {
log.warn("Failed to reset keyspace", e);
}