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/*-
* Public Domain 2014-present MongoDB, Inc.
* Public Domain 2008-2014 WiredTiger, Inc.
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "operation_tracker.h"
#include "src/common/constants.h"
#include "src/common/logger.h"
#include "src/storage/connection_manager.h"
namespace test_harness {
operation_tracker::operation_tracker(
configuration *_config, const bool use_compression, timestamp_manager &tsm)
: component(OPERATION_TRACKER, _config), _operation_table_name(TABLE_OPERATION_TRACKING),
_schema_table_config(SCHEMA_TRACKING_TABLE_CONFIG), _schema_table_name(TABLE_SCHEMA_TRACKING),
_use_compression(use_compression), _tsm(tsm)
{
_operation_table_config = "key_format=" + _config->get_string(TRACKING_KEY_FORMAT) +
",value_format=" + _config->get_string(TRACKING_VALUE_FORMAT) + ",log=(enabled=true)";
}
const std::string &
operation_tracker::get_schema_table_name() const
{
return (_schema_table_name);
}
const std::string &
operation_tracker::get_operation_table_name() const
{
return (_operation_table_name);
}
void
operation_tracker::load()
{
component::load();
if (!_enabled)
return;
/* Initiate schema tracking. */
_session = connection_manager::instance().create_session();
testutil_check(
_session->create(_session.get(), _schema_table_name.c_str(), _schema_table_config.c_str()));
_schema_track_cursor = _session.open_scoped_cursor(_schema_table_name);
logger::log_msg(LOG_TRACE, "Schema tracking initiated");
/* Initiate operations tracking. */
testutil_check(_session->create(
_session.get(), _operation_table_name.c_str(), _operation_table_config.c_str()));
logger::log_msg(LOG_TRACE, "Operations tracking created");
/*
* Open sweep cursor in a dedicated sweep session. This cursor will be used to clear out
* obsolete data from the tracking table.
*/
_sweep_session = connection_manager::instance().create_session();
_sweep_cursor = _sweep_session.open_scoped_cursor(_operation_table_name);
logger::log_msg(LOG_TRACE, "Tracking table sweep initialized");
}
void
operation_tracker::do_work()
{
WT_DECL_RET;
wt_timestamp_t ts, oldest_ts;
uint64_t collection_id, sweep_collection_id;
int op_type;
const char *key, *value;
char *sweep_key;
bool globally_visible_update_found;
/*
* This function prunes old data from the tracking table as the default validation logic doesn't
* use it. User-defined validation may need this data, so don't allow it to be removed.
*/
const std::string key_format(_sweep_cursor->key_format);
const std::string value_format(_sweep_cursor->value_format);
if (key_format != OPERATION_TRACKING_KEY_FORMAT ||
value_format != OPERATION_TRACKING_VALUE_FORMAT)
return;
key = sweep_key = nullptr;
globally_visible_update_found = false;
/* Take a copy of the oldest so that we sweep with a consistent timestamp. */
oldest_ts = _tsm.get_oldest_ts();
/* We need to check if the component is still running to avoid unnecessary iterations. */
while (_running && (ret = _sweep_cursor->prev(_sweep_cursor.get())) == 0) {
testutil_check(_sweep_cursor->get_key(_sweep_cursor.get(), &collection_id, &key, &ts));
testutil_check(_sweep_cursor->get_value(_sweep_cursor.get(), &op_type, &value));
/*
* If we're on a new key, reset the check. We want to track whether we have a globally
* visible update for the current key.
*/
if (sweep_key == nullptr || sweep_collection_id != collection_id ||
strcmp(sweep_key, key) != 0) {
globally_visible_update_found = false;
if (sweep_key != nullptr)
free(sweep_key);
sweep_key = static_cast<char *>(dstrdup(key));
sweep_collection_id = collection_id;
}
if (ts <= oldest_ts) {
if (globally_visible_update_found) {
if (logger::trace_level == LOG_TRACE)
logger::log_msg(LOG_TRACE,
std::string("workload tracking: Obsoleted update, key=") + sweep_key +
", collection_id=" + std::to_string(collection_id) +
", timestamp=" + std::to_string(ts) +
", oldest_timestamp=" + std::to_string(oldest_ts) + ", value=" + value);
/*
* Wrap the removal in a transaction as we need to specify we aren't using a
* timestamp on purpose.
*/
testutil_check(
_sweep_session->begin_transaction(_sweep_session.get(), "no_timestamp=true"));
testutil_check(_sweep_cursor->remove(_sweep_cursor.get()));
testutil_check(_sweep_session->commit_transaction(_sweep_session.get(), nullptr));
} else if (static_cast<tracking_operation>(op_type) == tracking_operation::INSERT) {
if (logger::trace_level == LOG_TRACE)
logger::log_msg(LOG_TRACE,
std::string("workload tracking: Found globally visible update, key=") +
sweep_key + ", collection_id=" + std::to_string(collection_id) +
", timestamp=" + std::to_string(ts) +
", oldest_timestamp=" + std::to_string(oldest_ts) + ", value=" + value);
globally_visible_update_found = true;
}
}
}
free(sweep_key);
/*
* If we get here and the test is still running, it means we must have reached the end of the
* table. We can also get here because the test is no longer running. In this case, the cursor
* can either be at the end of the table or still on a valid entry since we interrupted the
* work.
*/
if (ret != 0 && ret != WT_NOTFOUND)
testutil_die(LOG_ERROR,
"Tracking table sweep failed: cursor->next() returned an unexpected error %d.", ret);
/* If we have a position, give it up. */
testutil_check(_sweep_cursor->reset(_sweep_cursor.get()));
}
void
operation_tracker::save_schema_operation(
const tracking_operation &operation, const uint64_t &collection_id, wt_timestamp_t ts)
{
std::string error_message;
if (!_enabled)
return;
if (operation == tracking_operation::CREATE_COLLECTION ||
operation == tracking_operation::DELETE_COLLECTION) {
_schema_track_cursor->set_key(_schema_track_cursor.get(), collection_id, ts);
_schema_track_cursor->set_value(_schema_track_cursor.get(), static_cast<int>(operation));
testutil_check(_schema_track_cursor->insert(_schema_track_cursor.get()));
} else {
error_message =
"save_schema_operation: invalid operation " + std::to_string(static_cast<int>(operation));
testutil_die(EINVAL, error_message.c_str());
}
}
int
operation_tracker::save_operation(WT_SESSION *session, const tracking_operation &operation,
const uint64_t &collection_id, const std::string &key, const std::string &value,
wt_timestamp_t ts, scoped_cursor &op_track_cursor)
{
WT_DECL_RET;
if (!_enabled)
return (0);
testutil_assert(op_track_cursor.get() != nullptr);
if (operation == tracking_operation::CREATE_COLLECTION ||
operation == tracking_operation::DELETE_COLLECTION) {
const std::string error_message =
"save_operation: invalid operation " + std::to_string(static_cast<int>(operation));
testutil_die(EINVAL, error_message.c_str());
} else {
set_tracking_cursor(session, operation, collection_id, key, value, ts, op_track_cursor);
ret = op_track_cursor->insert(op_track_cursor.get());
}
return (ret);
}
/* Note that session is not used in the default implementation of the tracking table. */
void
operation_tracker::set_tracking_cursor(WT_SESSION *session, const tracking_operation &operation,
const uint64_t &collection_id, const std::string &key, const std::string &value,
wt_timestamp_t ts, scoped_cursor &op_track_cursor)
{
op_track_cursor->set_key(op_track_cursor.get(), collection_id, key.c_str(), ts);
op_track_cursor->set_value(op_track_cursor.get(), static_cast<int>(operation), value.c_str());
}
} // namespace test_harness
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