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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.
*/
#ifndef THREAD_CONTEXT_H
#define THREAD_CONTEXT_H
#include <string>
extern "C" {
#include "test_util.h"
}
#include "../core/throttle.h"
#include "../workload/database_model.h"
/* Forward declarations for classes to reduce compilation time and modules coupling. */
class configuration;
class timestamp_manager;
class workload_tracking;
namespace test_harness {
enum thread_type { READ, INSERT, UPDATE };
static std::string
type_string(thread_type type)
{
switch (type) {
case thread_type::INSERT:
return ("insert");
case thread_type::READ:
return ("read");
case thread_type::UPDATE:
return ("update");
default:
testutil_die(EINVAL, "unexpected thread_type: %d", static_cast<int>(type));
}
}
class transaction_context {
public:
explicit transaction_context(
configuration *config, timestamp_manager *timestamp_manager, WT_SESSION *session);
bool active() const;
void add_op();
void begin(const std::string &config = "");
/* Begin a transaction if we are not currently in one. */
void try_begin(const std::string &config = "");
/*
* Commit a transaction and return true if the commit was successful.
*/
bool commit(const std::string &config = "");
/* Rollback a transaction, failure will abort the test. */
void rollback(const std::string &config = "");
/* Attempt to rollback the transaction given the requirements are met. */
void try_rollback(const std::string &config = "");
/* Set a commit timestamp. */
void set_commit_timestamp(wt_timestamp_t ts);
/* Set that the transaction needs to be rolled back. */
void set_needs_rollback(bool rollback);
/*
* Returns true if a transaction can be committed as determined by the op count and the state of
* the transaction.
*/
bool can_commit();
/*
* Returns true if a transaction can be rolled back as determined by the op count and the state
* of the transaction.
*/
bool can_rollback();
private:
/*
* op_count is the current number of operations that have been executed in the current
* transaction.
*/
int64_t _op_count = 0;
/*
* _min_op_count and _max_op_count are the minimum and maximum number of operations within one
* transaction. is the current maximum number of operations that can be executed in the current
* transaction.
*/
int64_t _min_op_count = 0;
int64_t _max_op_count = INT64_MAX;
int64_t _target_op_count = 0;
bool _in_txn = false;
bool _needs_rollback = false;
WT_SESSION *_session = nullptr;
timestamp_manager *_timestamp_manager = nullptr;
};
/* Container class for a thread and any data types it may need to interact with the database. */
class thread_context {
public:
thread_context(uint64_t id, thread_type type, configuration *config,
scoped_session &&created_session, timestamp_manager *timestamp_manager,
workload_tracking *tracking, database &dbase);
virtual ~thread_context() = default;
void finish();
/*
* Convert a key_id to a string. If the resulting string is less than the given length, padding
* of '0' is added.
*/
std::string key_to_string(uint64_t key_id);
/*
* Generic update function, takes a collection_id and key, will generate the value.
*
* Return true if the operation was successful, a return value of false implies the transaction
* needs to be rolled back.
*/
bool update(scoped_cursor &cursor, uint64_t collection_id, const std::string &key);
/*
* Generic insert function, takes a collection_id and key_id, will generate the value. If a
* timestamp is not specified, the timestamp manager will generate one.
*
* Return true if the operation was successful, a return value of false implies the transaction
* needs to be rolled back.
*/
bool insert(
scoped_cursor &cursor, uint64_t collection_id, uint64_t key_id, wt_timestamp_t ts = 0);
bool insert(
scoped_cursor &cursor, uint64_t collection_id, const std::string &key, wt_timestamp_t ts = 0);
void sleep();
bool running() const;
public:
scoped_session session;
scoped_cursor op_track_cursor;
transaction_context transaction;
timestamp_manager *tsm;
workload_tracking *tracking;
database &db;
const int64_t collection_count;
const int64_t key_count;
const int64_t key_size;
const int64_t value_size;
const int64_t thread_count;
const uint64_t id;
const thread_type type;
private:
throttle _throttle;
bool _running = true;
};
} // namespace test_harness
#endif
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