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/*
* Copyright (c) 2010, FRiCKLE Piotr Sikora <info@frickle.com>
* Copyright (c) 2009-2010, Xiaozhe Wang <chaoslawful@gmail.com>
* Copyright (c) 2009-2010, Yichun Zhang <agentzh@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _NGX_HTTP_UPSTREAM_POSTGRES_H_
#define _NGX_HTTP_UPSTREAM_POSTGRES_H_
#include <ngx_core.h>
#include <ngx_http.h>
#include <libpq-fe.h>
#include "ngx_postgres_module.h"
typedef enum {
state_db_connect,
state_db_send_query,
state_db_get_result,
state_db_get_ack,
state_db_idle
} ngx_postgres_state_t;
typedef struct {
ngx_postgres_upstream_srv_conf_t *srv_conf;
ngx_postgres_loc_conf_t *loc_conf;
ngx_http_upstream_t *upstream;
ngx_http_request_t *request;
PGconn *pgconn;
ngx_postgres_state_t state;
ngx_str_t query;
ngx_str_t name;
struct sockaddr sockaddr;
unsigned failed;
} ngx_postgres_upstream_peer_data_t;
ngx_int_t ngx_postgres_upstream_init(ngx_conf_t *,
ngx_http_upstream_srv_conf_t *);
ngx_int_t ngx_postgres_upstream_init_peer(ngx_http_request_t *,
ngx_http_upstream_srv_conf_t *);
ngx_int_t ngx_postgres_upstream_get_peer(ngx_peer_connection_t *, void *);
void ngx_postgres_upstream_free_peer(ngx_peer_connection_t *, void *,
ngx_uint_t);
ngx_flag_t ngx_postgres_upstream_is_my_peer(const ngx_peer_connection_t *);
void ngx_postgres_upstream_free_connection(ngx_log_t *,
ngx_connection_t *, PGconn *,
ngx_postgres_upstream_srv_conf_t *);
#endif /* _NGX_HTTP_UPSTREAM_POSTGRES_H_ */
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