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Introduce synchronous pgsql queries. 

Semantics for using pgsql API have changed quite heavily
with this commit. See the examples for more information.

Based on Github issue #95 by PauloMelo (paulo.melo@vintageform.pt)
with several modifications by me.
This commit is contained in:
Joris Vink 2016-01-04 11:12:43 +01:00
parent 8368f6d471
commit a281fd5713
6 changed files with 359 additions and 110 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
examples/pgsql-sync/.gitignore vendored Normal file
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@ -0,0 +1,5 @@
*.o
.objs
pgsql-sync.so
assets.h
cert

11
examples/pgsql-sync/conf/pgsql-sync.conf Normal file
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@ -0,0 +1,11 @@
# Placeholder configuration
bind 127.0.0.1 8888
load ./pgsql-sync.so init
tls_dhparam dh2048.pem
domain 127.0.0.1 {
certfile cert/server.crt
certkey cert/server.key
static / page
}

92
examples/pgsql-sync/src/pgsql-sync.c Normal file
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@ -0,0 +1,92 @@
/*
* Copyright (c) 2015 Joris Vink <joris@coders.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This example demonstrates how to use synchronous PGSQL queries
* with Kore. For an asynchronous example see pgsql/ under examples/.
*
* This example does the same as the asynchronous one, select all entries
* from a table called "coders".
*/
#include <kore/kore.h>
#include <kore/http.h>
#include <kore/pgsql.h>
int init(int);
int page(struct http_request *);
/* Called when our module is loaded (see config) */
int
init(int state)
{
/* Register our database. */
kore_pgsql_register("db", "host=/tmp dbname=test");
return (KORE_RESULT_OK);
}
/* Page handler entry point (see config) */
int
page(struct http_request *req)
{
struct kore_pgsql sql;
char *name;
int rows, i;
req->status = HTTP_STATUS_INTERNAL_ERROR;
/*
* Initialise our kore_pgsql data structure with the database name
* we want to connect to (note that we registered this earlier with
* kore_pgsql_register()). We also say we will perform a synchronous
* query (KORE_PGSQL_SYNC) and we do not need to pass our http_request
* so we pass NULL instead.
*/
if (!kore_pgsql_query_init(&sql, NULL, "db", KORE_PGSQL_SYNC)) {
kore_pgsql_logerror(&sql);
goto out;
}
/*
* Now we can fire off the query, once it returns we either have
* a result on which we can operate or an error occured.
*/
if (!kore_pgsql_query(&sql, "SELECT * FROM coders")) {
kore_pgsql_logerror(&sql);
goto out;
}
/*
* Iterate over the result and dump it to somewhere.
*/
rows = kore_pgsql_ntuples(&sql);
for (i = 0; i < rows; i++) {
name = kore_pgsql_getvalue(&sql, i, 0);
kore_log(LOG_NOTICE, "name: '%s'", name);
}
/* All good. */
req->status = HTTP_STATUS_OK;
out:
http_response(req, req->status, NULL, 0);
/* Don't forget to cleanup the kore_pgsql data structure. */
kore_pgsql_cleanup(&sql);
return (KORE_RESULT_OK);
}

66
examples/pgsql/src/pgsql.c
View File

@ -16,7 +16,8 @@
/*
* This example demonstrates on how to use state machines and
* asynchronous pgsql queries.
* asynchronous pgsql queries. For a synchronous query example
* see the pgsql-sync/ example under the examples/ directory.
*
* While this example might seem overly complex for a simple pgsql
* query, there is a reason behind its complexity:
@ -36,15 +37,17 @@
#include <kore/http.h>
#include <kore/pgsql.h>
#define REQ_STATE_QUERY 0
#define REQ_STATE_DB_WAIT 1
#define REQ_STATE_DB_READ 2
#define REQ_STATE_ERROR 3
#define REQ_STATE_DONE 4
#define REQ_STATE_INIT 0
#define REQ_STATE_QUERY 1
#define REQ_STATE_DB_WAIT 2
#define REQ_STATE_DB_READ 3
#define REQ_STATE_ERROR 4
#define REQ_STATE_DONE 5
int init(int);
int page(struct http_request *);
static int request_perform_init(struct http_request *);
static int request_perform_query(struct http_request *);
static int request_db_wait(struct http_request *);
static int request_db_read(struct http_request *);
@ -52,6 +55,7 @@ static int request_error(struct http_request *);
static int request_done(struct http_request *);
struct http_state mystates[] = {
{ "REQ_STATE_INIT", request_perform_init },
{ "REQ_STATE_QUERY", request_perform_query },
{ "REQ_STATE_DB_WAIT", request_db_wait },
{ "REQ_STATE_DB_READ", request_db_read },
@ -62,6 +66,7 @@ struct http_state mystates[] = {
#define mystates_size (sizeof(mystates) / sizeof(mystates[0]))
struct rstate {
int cnt;
struct kore_pgsql sql;
};
@ -69,8 +74,8 @@ struct rstate {
int
init(int state)
{
/* Set our connection string. */
pgsql_conn_string = "host=/var/run/postgresql/ dbname=test";
/* Register our database. */
kore_pgsql_register("db", "host=/tmp dbname=test");
return (KORE_RESULT_OK);
}
@ -84,29 +89,48 @@ page(struct http_request *req)
return (http_state_run(mystates, mystates_size, req));
}
/* The initial state, we setup our context and fire off the pgsql query. */
/* Initialize our PGSQL data structure and prepare for an async query. */
int
request_perform_query(struct http_request *req)
request_perform_init(struct http_request *req)
{
struct rstate *state;
/* Setup our state context. */
state = kore_malloc(sizeof(*state));
/* Setup our state context (if not yet set). */
if (req->hdlr_extra == NULL) {
state = kore_malloc(sizeof(*state));
req->hdlr_extra = state;
} else {
state = req->hdlr_extra;
}
/* Attach the state to our request. */
req->hdlr_extra = state;
/* Initialize our kore_pgsql data structure. */
if (!kore_pgsql_query_init(&state->sql, req, "db", KORE_PGSQL_ASYNC)) {
/* If the state was still INIT, we'll try again later. */
if (state->sql.state == KORE_PGSQL_STATE_INIT) {
req->fsm_state = REQ_STATE_INIT;
return (HTTP_STATE_RETRY);
}
kore_pgsql_logerror(&state->sql);
req->fsm_state = REQ_STATE_ERROR;
} else {
req->fsm_state = REQ_STATE_QUERY;
}
return (HTTP_STATE_CONTINUE);
}
/* After setting everything up we will execute our async query. */
int
request_perform_query(struct http_request *req)
{
struct rstate *state = req->hdlr_extra;
/* We want to move to read result after this. */
req->fsm_state = REQ_STATE_DB_WAIT;
/* Fire off the query. */
if (!kore_pgsql_query(&state->sql, req, "SELECT * FROM coders")) {
/* If the state was still INIT, we'll try again later. */
if (state->sql.state == KORE_PGSQL_STATE_INIT) {
req->fsm_state = REQ_STATE_QUERY;
return (HTTP_STATE_RETRY);
}
if (!kore_pgsql_query(&state->sql, "SELECT * FROM coders")) {
/*
* Let the state machine continue immediately since we
* have an error anyway.

22
includes/pgsql.h
View File

@ -22,6 +22,9 @@
#define KORE_PGSQL_FORMAT_TEXT 0
#define KORE_PGSQL_FORMAT_BINARY 1
#define KORE_PGSQL_SYNC 0x0001
#define KORE_PGSQL_ASYNC 0x0002
#if defined(__cplusplus)
extern "C" {
#endif
@ -29,14 +32,23 @@ extern "C" {
struct pgsql_conn {
u_int8_t type;
u_int8_t flags;
char *name;
PGconn *db;
struct pgsql_job *job;
TAILQ_ENTRY(pgsql_conn) list;
};
struct pgsql_db {
char *name;
char *conn_string;
LIST_ENTRY(pgsql_db) rlist;
};
struct kore_pgsql {
u_int8_t state;
int flags;
char *error;
PGresult *result;
struct pgsql_conn *conn;
@ -45,17 +57,17 @@ struct kore_pgsql {
};
extern u_int16_t pgsql_conn_max;
extern char *pgsql_conn_string;
void kore_pgsql_init(void);
int kore_pgsql_query_init(struct kore_pgsql *, struct http_request *,
const char *, int);
void kore_pgsql_handle(void *, int);
void kore_pgsql_cleanup(struct kore_pgsql *);
void kore_pgsql_continue(struct http_request *, struct kore_pgsql *);
int kore_pgsql_query(struct kore_pgsql *, struct http_request *,
const char *);
int kore_pgsql_query_params(struct kore_pgsql *, struct http_request *,
int kore_pgsql_query(struct kore_pgsql *, const char *);
int kore_pgsql_query_params(struct kore_pgsql *,
const char *, int, u_int8_t, ...);
int kore_pgsql_register(const char *, const char *);
int kore_pgsql_ntuples(struct kore_pgsql *);
void kore_pgsql_logerror(struct kore_pgsql *);
void kore_pgsql_queue_remove(struct http_request *);

273
src/pgsql.c
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2014 Joris Vink <joris@coders.se>
* Copyright (c) 2014-2015 Joris Vink <joris@coders.se>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@ -25,7 +25,6 @@
#include "pgsql.h"
struct pgsql_job {
char *query;
struct http_request *req;
struct kore_pgsql *pgsql;
@ -37,28 +36,30 @@ struct pgsql_wait {
TAILQ_ENTRY(pgsql_wait) list;
};
#define PGSQL_IS_BLOCKING 0
#define PGSQL_IS_ASYNC 1
#define PGSQL_CONN_MAX 2
#define PGSQL_CONN_FREE 0x01
#define PGSQL_LIST_INSERTED 0x0100
static void pgsql_queue_wakeup(void);
static int pgsql_conn_create(struct kore_pgsql *);
static void pgsql_set_error(struct kore_pgsql *, const char *);
static void pgsql_queue_add(struct http_request *);
static void pgsql_conn_release(struct kore_pgsql *);
static void pgsql_conn_cleanup(struct pgsql_conn *);
static void pgsql_read_result(struct kore_pgsql *, int);
static void pgsql_schedule(struct kore_pgsql *, struct http_request *);
static int pgsql_prepare(struct kore_pgsql *, struct http_request *,
const char *);
static void pgsql_read_result(struct kore_pgsql *);
static void pgsql_schedule(struct kore_pgsql *);
static struct pgsql_conn *pgsql_conn_create(struct kore_pgsql *,
struct pgsql_db *);
static struct pgsql_conn *pgsql_conn_next(struct kore_pgsql *,
struct pgsql_db *,
struct http_request *);
static struct kore_pool pgsql_job_pool;
static struct kore_pool pgsql_wait_pool;
static TAILQ_HEAD(, pgsql_conn) pgsql_conn_free;
static TAILQ_HEAD(, pgsql_wait) pgsql_wait_queue;
static LIST_HEAD(, pgsql_db) pgsql_db_conn_strings;
static u_int16_t pgsql_conn_count;
char *pgsql_conn_string = NULL;
u_int16_t pgsql_conn_max = PGSQL_CONN_MAX;
void
@ -67,6 +68,7 @@ kore_pgsql_init(void)
pgsql_conn_count = 0;
TAILQ_INIT(&pgsql_conn_free);
TAILQ_INIT(&pgsql_wait_queue);
LIST_INIT(&pgsql_db_conn_strings);
kore_pool_init(&pgsql_job_pool, "pgsql_job_pool",
sizeof(struct pgsql_job), 100);
@ -75,32 +77,91 @@ kore_pgsql_init(void)
}
int
kore_pgsql_query(struct kore_pgsql *pgsql, struct http_request *req,
const char *query)
kore_pgsql_query_init(struct kore_pgsql *pgsql, struct http_request *req,
const char *dbname, int flags)
{
if (!pgsql_prepare(pgsql, req, query))
return (KORE_RESULT_ERROR);
struct pgsql_db *db;
if (!PQsendQuery(pgsql->conn->db, query)) {
pgsql_conn_cleanup(pgsql->conn);
memset(pgsql, 0, sizeof(*pgsql));
pgsql->flags = flags;
pgsql->state = KORE_PGSQL_STATE_INIT;
if ((req == NULL && (flags & KORE_PGSQL_ASYNC)) ||
((flags & KORE_PGSQL_ASYNC) && (flags & KORE_PGSQL_SYNC))) {
pgsql_set_error(pgsql, "invalid query init parameters");
return (KORE_RESULT_ERROR);
}
pgsql_schedule(pgsql, req);
db = NULL;
LIST_FOREACH(db, &pgsql_db_conn_strings, rlist) {
if (!strcmp(db->name, dbname))
break;
}
if (db == NULL) {
pgsql_set_error(pgsql, "no database found");
return (KORE_RESULT_ERROR);
}
if ((pgsql->conn = pgsql_conn_next(pgsql, db, req)) == NULL)
return (KORE_RESULT_ERROR);
if (pgsql->flags & KORE_PGSQL_ASYNC) {
pgsql->conn->job = kore_pool_get(&pgsql_job_pool);
pgsql->conn->job->req = req;
pgsql->conn->job->pgsql = pgsql;
http_request_sleep(req);
pgsql->flags |= PGSQL_LIST_INSERTED;
LIST_INSERT_HEAD(&(req->pgsqls), pgsql, rlist);
}
return (KORE_RESULT_OK);
}
int
kore_pgsql_query_params(struct kore_pgsql *pgsql, struct http_request *req,
kore_pgsql_query(struct kore_pgsql *pgsql, const char *query)
{
if (pgsql->conn == NULL) {
pgsql_set_error(pgsql, "no connection was set before query");
return (KORE_RESULT_ERROR);
}
if (pgsql->flags & KORE_PGSQL_SYNC) {
pgsql->result = PQexec(pgsql->conn->db, query);
if ((PQresultStatus(pgsql->result) != PGRES_TUPLES_OK) &&
(PQresultStatus(pgsql->result) != PGRES_COMMAND_OK)) {
pgsql_set_error(pgsql, PQerrorMessage(pgsql->conn->db));
return (KORE_RESULT_ERROR);
}
pgsql->state = KORE_PGSQL_STATE_DONE;
} else {
if (!PQsendQuery(pgsql->conn->db, query)) {
pgsql_set_error(pgsql, PQerrorMessage(pgsql->conn->db));
return (KORE_RESULT_ERROR);
}
pgsql_schedule(pgsql);
}
return (KORE_RESULT_OK);
}
int
kore_pgsql_query_params(struct kore_pgsql *pgsql,
const char *query, int result, u_int8_t count, ...)
{
u_int8_t i;
va_list args;
char **values;
int *lengths, *formats;
int *lengths, *formats, ret;
if (!pgsql_prepare(pgsql, req, query))
if (pgsql->conn == NULL) {
pgsql_set_error(pgsql, "no connection was set before query");
return (KORE_RESULT_ERROR);
}
if (count > 0) {
va_start(args, count);
@ -120,20 +181,55 @@ kore_pgsql_query_params(struct kore_pgsql *pgsql, struct http_request *req,
values = NULL;
}
if (!PQsendQueryParams(pgsql->conn->db, query, count, NULL,
(const char * const *)values, lengths, formats, result)) {
kore_mem_free(values);
kore_mem_free(lengths);
kore_mem_free(formats);
pgsql_conn_cleanup(pgsql->conn);
return (KORE_RESULT_ERROR);
ret = KORE_RESULT_ERROR;
if (pgsql->flags & KORE_PGSQL_SYNC) {
pgsql->result = PQexecParams(pgsql->conn->db, query, count,
NULL, (const char * const *)values, lengths, formats,
result);
if ((PQresultStatus(pgsql->result) != PGRES_TUPLES_OK) &&
(PQresultStatus(pgsql->result) != PGRES_COMMAND_OK)) {
pgsql_set_error(pgsql, PQerrorMessage(pgsql->conn->db));
goto cleanup;
}
pgsql->state = KORE_PGSQL_STATE_DONE;
} else {
if (!PQsendQueryParams(pgsql->conn->db, query, count, NULL,
(const char * const *)values, lengths, formats, result)) {
pgsql_set_error(pgsql, PQerrorMessage(pgsql->conn->db));
goto cleanup;
}
pgsql_schedule(pgsql);
}
ret = KORE_RESULT_OK;
cleanup:
kore_mem_free(values);
kore_mem_free(lengths);
kore_mem_free(formats);
pgsql_schedule(pgsql, req);
return (ret);
}
int
kore_pgsql_register(const char *dbname, const char *connstring)
{
struct pgsql_db *pgsqldb;
LIST_FOREACH(pgsqldb, &pgsql_db_conn_strings, rlist) {
if (!strcmp(pgsqldb->name, dbname))
return (KORE_RESULT_ERROR);
}
pgsqldb = kore_malloc(sizeof(*pgsqldb));
pgsqldb->name = kore_strdup(dbname);
pgsqldb->conn_string = kore_strdup(connstring);
LIST_INSERT_HEAD(&pgsql_db_conn_strings, pgsqldb, rlist);
return (KORE_RESULT_OK);
}
@ -157,7 +253,7 @@ kore_pgsql_handle(void *c, int err)
pgsql->state = KORE_PGSQL_STATE_ERROR;
pgsql->error = kore_strdup(PQerrorMessage(conn->db));
} else {
pgsql_read_result(pgsql, PGSQL_IS_ASYNC);
pgsql_read_result(pgsql);
}
if (pgsql->state == KORE_PGSQL_STATE_WAIT) {
@ -218,7 +314,10 @@ kore_pgsql_cleanup(struct kore_pgsql *pgsql)
pgsql->error = NULL;
pgsql->conn = NULL;
LIST_REMOVE(pgsql, rlist);
if (pgsql->flags & PGSQL_LIST_INSERTED) {
LIST_REMOVE(pgsql, rlist);
pgsql->flags &= ~PGSQL_LIST_INSERTED;
}
}
void
@ -262,47 +361,55 @@ kore_pgsql_queue_remove(struct http_request *req)
}
}
static int
pgsql_prepare(struct kore_pgsql *pgsql, struct http_request *req,
const char *query)
static struct pgsql_conn *
pgsql_conn_next(struct kore_pgsql *pgsql, struct pgsql_db *db,
struct http_request *req)
{
struct pgsql_conn *conn;
pgsql->state = KORE_PGSQL_STATE_INIT;
pgsql->result = NULL;
pgsql->error = NULL;
pgsql->conn = NULL;
conn = NULL;
if (TAILQ_EMPTY(&pgsql_conn_free)) {
if (pgsql_conn_count >= pgsql_conn_max) {
pgsql_queue_add(req);
return (KORE_RESULT_ERROR);
}
if (!pgsql_conn_create(pgsql))
return (KORE_RESULT_ERROR);
TAILQ_FOREACH(conn, &pgsql_conn_free, list) {
if (!(conn->flags & PGSQL_CONN_FREE))
fatal("got a pgsql connection that was not free?");
if (!strcmp(conn->name, db->name))
break;
}
http_request_sleep(req);
conn = TAILQ_FIRST(&pgsql_conn_free);
if (!(conn->flags & PGSQL_CONN_FREE))
fatal("received a pgsql conn that was not free?");
if (conn == NULL) {
if (pgsql_conn_count >= pgsql_conn_max) {
if (pgsql->flags & KORE_PGSQL_ASYNC) {
pgsql_queue_add(req);
} else {
pgsql_set_error(pgsql,
"no available connection");
}
return (NULL);
}
if ((conn = pgsql_conn_create(pgsql, db)) == NULL)
return (NULL);
}
conn->flags &= ~PGSQL_CONN_FREE;
TAILQ_REMOVE(&pgsql_conn_free, conn, list);
pgsql->conn = conn;
conn->job = kore_pool_get(&pgsql_job_pool);
conn->job->query = kore_strdup(query);
conn->job->pgsql = pgsql;
conn->job->req = req;
LIST_INSERT_HEAD(&(req->pgsqls), pgsql, rlist);
return (KORE_RESULT_OK);
return (conn);
}
static void
pgsql_schedule(struct kore_pgsql *pgsql, struct http_request *req)
pgsql_set_error(struct kore_pgsql *pgsql, const char *msg)
{
if (pgsql->error != NULL)
kore_mem_free(pgsql->error);
pgsql->error = kore_strdup(msg);
pgsql->state = KORE_PGSQL_STATE_ERROR;
}
static void
pgsql_schedule(struct kore_pgsql *pgsql)
{
int fd;
@ -347,33 +454,32 @@ pgsql_queue_wakeup(void)
}
}
static int
pgsql_conn_create(struct kore_pgsql *pgsql)
static struct pgsql_conn *
pgsql_conn_create(struct kore_pgsql *pgsql, struct pgsql_db *db)
{
struct pgsql_conn *conn;
if (pgsql_conn_string == NULL)
if (db == NULL || db->conn_string == NULL)
fatal("pgsql_conn_create: no connection string");
pgsql_conn_count++;
conn = kore_malloc(sizeof(*conn));
kore_debug("pgsql_conn_create(): %p", conn);
memset(conn, 0, sizeof(*conn));
conn->db = PQconnectdb(pgsql_conn_string);
conn->db = PQconnectdb(db->conn_string);
if (conn->db == NULL || (PQstatus(conn->db) != CONNECTION_OK)) {
pgsql->state = KORE_PGSQL_STATE_ERROR;
pgsql->error = kore_strdup(PQerrorMessage(conn->db));
pgsql_set_error(pgsql, PQerrorMessage(conn->db));
pgsql_conn_cleanup(conn);
return (KORE_RESULT_ERROR);
return (NULL);
}
conn->job = NULL;
conn->flags = PGSQL_CONN_FREE;
conn->type = KORE_TYPE_PGSQL_CONN;
conn->name = kore_strdup(db->name);
TAILQ_INSERT_TAIL(&pgsql_conn_free, conn, list);
return (KORE_RESULT_OK);
return (conn);
}
static void
@ -384,8 +490,14 @@ pgsql_conn_release(struct kore_pgsql *pgsql)
if (pgsql->conn == NULL)
return;
kore_mem_free(pgsql->conn->job->query);
kore_pool_put(&pgsql_job_pool, pgsql->conn->job);
/* Async query cleanup */
if (pgsql->flags & KORE_PGSQL_ASYNC) {
if (pgsql->conn != NULL) {
fd = PQsocket(pgsql->conn->db);
kore_platform_disable_read(fd);
kore_pool_put(&pgsql_job_pool, pgsql->conn->job);
}
}
/* Drain just in case. */
while (PQgetResult(pgsql->conn->db) != NULL)
@ -395,9 +507,6 @@ pgsql_conn_release(struct kore_pgsql *pgsql)
pgsql->conn->flags |= PGSQL_CONN_FREE;
TAILQ_INSERT_TAIL(&pgsql_conn_free, pgsql->conn, list);
fd = PQsocket(pgsql->conn->db);
kore_platform_disable_read(fd);
pgsql->conn = NULL;
pgsql->state = KORE_PGSQL_STATE_COMPLETE;
@ -421,10 +530,8 @@ pgsql_conn_cleanup(struct pgsql_conn *conn)
http_request_wakeup(req);
pgsql->conn = NULL;
pgsql->state = KORE_PGSQL_STATE_ERROR;
pgsql->error = kore_strdup(PQerrorMessage(conn->db));
pgsql_set_error(pgsql, PQerrorMessage(conn->db));
kore_mem_free(conn->job->query);
kore_pool_put(&pgsql_job_pool, conn->job);
conn->job = NULL;
}
@ -433,17 +540,16 @@ pgsql_conn_cleanup(struct pgsql_conn *conn)
PQfinish(conn->db);
pgsql_conn_count--;
kore_mem_free(conn->name);
kore_mem_free(conn);
}
static void
pgsql_read_result(struct kore_pgsql *pgsql, int async)
pgsql_read_result(struct kore_pgsql *pgsql)
{
if (async) {
if (PQisBusy(pgsql->conn->db)) {
pgsql->state = KORE_PGSQL_STATE_WAIT;
return;
}
if (PQisBusy(pgsql->conn->db)) {
pgsql->state = KORE_PGSQL_STATE_WAIT;
return;
}
pgsql->result = PQgetResult(pgsql->conn->db);
@ -470,8 +576,7 @@ pgsql_read_result(struct kore_pgsql *pgsql, int async)
case PGRES_EMPTY_QUERY:
case PGRES_BAD_RESPONSE:
case PGRES_FATAL_ERROR:
pgsql->state = KORE_PGSQL_STATE_ERROR;
pgsql->error = kore_strdup(PQresultErrorMessage(pgsql->result));
pgsql_set_error(pgsql, PQresultErrorMessage(pgsql->result));
break;
}
}