shard_proxy_handler.h

Go to the documentation of this file.

/*
 * Copyright 2008 Search Solution Corporation
 * Copyright 2016 CUBRID Corporation
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */


/*
 * shard_proxy_handler.h -
 *
 */

#ifndef _SHARD_PROXY_HANDLER_H_
#define _SHARD_PROXY_HANDLER_H_

#ident "$Id$"


#include "porting.h"
#include "shard_proxy_common.h"

typedef int (*T_PROXY_EVENT_FUNC) (char *driver_info, char **buffer);
typedef int (*T_PROXY_EVENT_FUNC_EX) (char *driver_info, char **buffer, void *argv);

extern T_WAIT_CONTEXT *proxy_waiter_new (int ctx_cid, unsigned int ctx_uid, int timeout);
extern void proxy_waiter_free (T_WAIT_CONTEXT * waiter);
extern void proxy_waiter_timeout (T_SHARD_QUEUE * waitq, INT64 * counter, int now);
extern int proxy_waiter_comp_fn (const void *arg1, const void *arg2);


extern bool proxy_handler_is_cas_in_tran (int shard_id, int cas_id);
extern void proxy_context_set_error (T_PROXY_CONTEXT * ctx_p, int error_ind, int error_code);
extern void proxy_context_set_error_with_msg (T_PROXY_CONTEXT * ctx_p, int error_ind, int error_code,
                          const char *error_msg);
extern void proxy_context_clear_error (T_PROXY_CONTEXT * ctx_p);
extern int proxy_context_send_error (T_PROXY_CONTEXT * ctx_p);

extern void proxy_context_set_in_tran (T_PROXY_CONTEXT * ctx_p, int shard_id, int cas_id);
extern void proxy_context_set_out_tran (T_PROXY_CONTEXT * ctx_p);

extern T_PROXY_CONTEXT *proxy_context_new (void);
extern void proxy_context_free (T_PROXY_CONTEXT * ctx_p);
#if defined (ENABLE_UNUSED_FUNCTION)
extern void proxy_context_free_by_cid (int cid, unsigned int uid);
#endif /* ENABLE_UNUSED_FUNCTION */
extern T_PROXY_CONTEXT *proxy_context_find (int cid, unsigned int uid);
extern T_PROXY_CONTEXT *proxy_context_find_by_socket_client_io (T_SOCKET_IO * sock_io_p);
extern T_CONTEXT_STMT *proxy_context_find_stmt (T_PROXY_CONTEXT * ctx_p, int stmt_h_id);
extern T_CONTEXT_STMT *proxy_context_add_stmt (T_PROXY_CONTEXT * ctx_p, T_SHARD_STMT * stmt_p);
extern void proxy_context_free_stmt (T_PROXY_CONTEXT * ctx_p);
extern void proxy_context_timeout (T_PROXY_CONTEXT * ctx_p);

#if defined (PROXY_VERBOSE_DEBUG)
extern void proxy_context_dump_stmt (FILE * fp, T_PROXY_CONTEXT * ctx_p);
extern void proxy_context_dump_title (FILE * fp);
extern void proxy_context_dump (FILE * fp, T_PROXY_CONTEXT * ctx_p);
extern void proxy_context_dump_all (FILE * fp);
extern void proxy_context_print (bool print_all);
#endif /* PROXY_VERBOSE_DEBUG */
extern char *proxy_str_context (T_PROXY_CONTEXT * ctx_p);


extern void proxy_handler_destroy (void);
extern int proxy_handler_initialize (void);
extern void proxy_handler_process (void);

extern int proxy_wakeup_context_by_shard (T_WAIT_CONTEXT * waiter_p, int shard_id, int cas_id);
extern int proxy_wakeup_context_by_statement (T_WAIT_CONTEXT * waiter_p);

extern T_PROXY_EVENT *proxy_event_new (unsigned int type, int from_cas);
extern T_PROXY_EVENT *proxy_event_dup (T_PROXY_EVENT * event_p);
extern T_PROXY_EVENT *proxy_event_new_with_req (char *driver_info, unsigned int type, int from,
                        T_PROXY_EVENT_FUNC req_func);
extern T_PROXY_EVENT *proxy_event_new_with_rsp (char *driver_info, unsigned int type, int from,
                        T_PROXY_EVENT_FUNC resp_func);
extern T_PROXY_EVENT *proxy_event_new_with_rsp_ex (char *driver_info, unsigned int type, int from,
                           T_PROXY_EVENT_FUNC_EX resp_func, void *argv);
extern T_PROXY_EVENT *proxy_event_new_with_error (char *driver_info, unsigned int type, int from,
                          int (*err_func) (char *driver_info, char **buffer, int error_ind,
                                   int error_code, const char *error_msg,
                                   char is_in_tran), int error_ind, int error_code,
                          const char *error_msg, char is_in_tran);

extern int proxy_event_alloc_buffer (T_PROXY_EVENT * event_p, unsigned int size);
extern int proxy_event_realloc_buffer (T_PROXY_EVENT * event_p, unsigned int size);
extern void proxy_event_set_buffer (T_PROXY_EVENT * event_p, char *data, unsigned int size);
extern void proxy_event_set_type_from (T_PROXY_EVENT * event_p, unsigned int type, int from_cas);
extern void proxy_event_set_context (T_PROXY_EVENT * event_p, int cid, unsigned int uid);
extern void proxy_event_set_shard (T_PROXY_EVENT * event_p, int shard_id, int cas_id);
extern bool proxy_event_io_read_complete (T_PROXY_EVENT * event_p);
#if defined (ENABLE_UNUSED_FUNCTION)
extern bool proxy_event_io_write_complete (T_PROXY_EVENT * event_p);
#endif /* ENABLE_UNUSED_FUNCTION */
extern void proxy_event_free (T_PROXY_EVENT * event_p);
extern char *proxy_str_event (T_PROXY_EVENT * event_p);

extern void proxy_timer_process (void);

extern char *shard_str_sqls (char *sql);
#endif /* _SHARD_PROXY_HANDLER_H_ */