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odyssey
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odissey: forward ParameterStatus messages during client configure

This commit is contained in:
Dmitry Simonenko 2017-09-05 17:07:50 +03:00
parent d89fe4e580
commit b964dbdc4f
6 changed files with 51 additions and 23 deletions
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16
sources/backend.c
View File

@ -345,7 +345,8 @@ int od_backend_connect_cancel(od_server_t *server,
return 0;
}
int od_backend_ready_wait(od_server_t *server, char *context, int time_ms)
int od_backend_ready_wait(od_server_t *server, shapito_stream_t *params,
char *context, int time_ms)
{
od_instance_t *instance = server->system->instance;
@ -372,6 +373,14 @@ int od_backend_ready_wait(od_server_t *server, char *context, int time_ms)
od_backend_error(server, context, stream->start,
shapito_stream_used(stream));
}
/* ParameterStatus */
if (type == 'S' && params) {
/* copy status messages */
rc = shapito_stream_ensure(params, shapito_stream_used(stream));
if (rc == -1)
return -1;
shapito_stream_write(params, stream->start, shapito_stream_used(stream));
}
/* ReadyForQuery */
if (type == 'Z') {
od_backend_ready(server, context,
@ -383,7 +392,8 @@ int od_backend_ready_wait(od_server_t *server, char *context, int time_ms)
return 0;
}
int od_backend_query(od_server_t *server, char *context, char *query, int len)
int od_backend_query(od_server_t *server, shapito_stream_t *params,
char *context, char *query, int len)
{
od_instance_t *instance = server->system->instance;
int rc;
@ -404,7 +414,7 @@ int od_backend_query(od_server_t *server, char *context, char *query, int len)
od_server_sync_request(server);
od_server_stat_request(server);
rc = od_backend_ready_wait(server, context, UINT32_MAX);
rc = od_backend_ready_wait(server, params, context, UINT32_MAX);
if (rc == -1)
return -1;
return 0;

4
sources/backend.h
View File

@ -13,7 +13,7 @@ void od_backend_close(od_server_t*);
int od_backend_terminate(od_server_t*);
void od_backend_error(od_server_t*, char*, char*, int);
int od_backend_ready(od_server_t*, char*, char*, int);
int od_backend_ready_wait(od_server_t*, char*, int);
int od_backend_query(od_server_t*, char*, char*, int);
int od_backend_ready_wait(od_server_t*, shapito_stream_t*, char*, int);
int od_backend_query(od_server_t*, shapito_stream_t*, char*, char*, int);
#endif /* OD_BACKEND_H */

34
sources/frontend.c
View File

@ -339,14 +339,9 @@ od_frontend_remote(od_client_t *client)
server->id.id);
/* configure server using client startup parameters,
* if it has not been configured before. */
if (od_idmgr_cmp(&server->last_client_id, &client->id)) {
assert(server->io != NULL);
od_debug_client(&instance->logger, &client->id, NULL,
"previously owned, no need to reconfigure %s%.*s",
server->id.id_prefix, sizeof(server->id.id),
server->id.id);
} else {
* if it has not been configured before */
if (! od_idmgr_cmp(&server->last_client_id, &client->id))
{
/* connect to server, if necessary */
if (server->io == NULL) {
rc = od_backend_connect(server);
@ -354,17 +349,36 @@ od_frontend_remote(od_client_t *client)
return OD_RS_ESERVER_CONNECT;
}
shapito_stream_reset(&server->stream_params);
/* discard last server configuration */
if (route->scheme->pool_discard) {
rc = od_reset_discard(client->server);
rc = od_reset_discard(client->server, &server->stream_params);
if (rc == -1)
return OD_RS_ESERVER_CONFIGURE;
}
/* set client parameters */
rc = od_reset_configure(client->server, &client->startup);
rc = od_reset_configure(client->server, &server->stream_params,
&client->startup);
if (rc == -1)
return OD_RS_ESERVER_CONFIGURE;
/* forward ParameterStatus messages */
if (shapito_stream_used(&server->stream_params)) {
od_debug_client(&instance->logger, &client->id, "configure",
"sending parameter statuses to client: %d bytes",
shapito_stream_used(&server->stream_params));
rc = od_write(client->io, &server->stream_params);
if (rc == -1)
return OD_RS_ECLIENT_WRITE;
}
} else {
assert(server->io != NULL);
od_debug_client(&instance->logger, &client->id, NULL,
"previously owned, no need to reconfigure %s%.*s",
server->id.id_prefix, sizeof(server->id.id),
server->id.id);
}
}

13
sources/reset.c
View File

@ -110,7 +110,7 @@ int od_reset(od_server_t *server)
wait_timeout,
wait_try);
wait_try++;
rc = od_backend_ready_wait(server, "reset", wait_timeout);
rc = od_backend_ready_wait(server, NULL, "reset", wait_timeout);
if (rc == -1)
break;
}
@ -144,7 +144,7 @@ int od_reset(od_server_t *server)
if (route->scheme->pool_rollback) {
if (server->is_transaction) {
char query_rlb[] = "ROLLBACK";
rc = od_backend_query(server, "reset rollback", query_rlb,
rc = od_backend_query(server, NULL, "reset rollback", query_rlb,
sizeof(query_rlb));
if (rc == -1)
goto error;
@ -160,7 +160,8 @@ error:
return -1;
}
int od_reset_configure(od_server_t *server, shapito_be_startup_t *startup)
int od_reset_configure(od_server_t *server, shapito_stream_t *params,
shapito_be_startup_t *startup)
{
od_instance_t *instance = server->system->instance;
@ -185,17 +186,17 @@ int od_reset_configure(od_server_t *server, shapito_be_startup_t *startup)
od_debug_server(&instance->logger, &server->id, "configure",
"%s", query_configure);
int rc;
rc = od_backend_query(server, "configure", query_configure,
rc = od_backend_query(server, params, "configure", query_configure,
size + 1);
return rc;
}
int od_reset_discard(od_server_t *server)
int od_reset_discard(od_server_t *server, shapito_stream_t *params)
{
od_instance_t *instance = server->system->instance;
char query_discard[] = "DISCARD ALL";
od_debug_server(&instance->logger, &server->id, "discard",
"%s", query_discard);
return od_backend_query(server, "reset", query_discard,
return od_backend_query(server, params, "reset", query_discard,
sizeof(query_discard));
}

4
sources/reset.h
View File

@ -8,7 +8,7 @@
*/
int od_reset(od_server_t*);
int od_reset_configure(od_server_t*, shapito_be_startup_t*);
int od_reset_discard(od_server_t*);
int od_reset_configure(od_server_t*, shapito_stream_t*, shapito_be_startup_t*);
int od_reset_discard(od_server_t*, shapito_stream_t*);
#endif /* OD_RESET_H */

3
sources/server.h
View File

@ -32,6 +32,7 @@ struct od_server
od_serverstate_t state;
od_id_t id;
shapito_stream_t stream;
shapito_stream_t stream_params;
machine_io_t *io;
machine_tls_t *tls;
int is_allocated;
@ -67,6 +68,7 @@ od_server_init(od_server_t *server)
shapito_key_init(&server->key);
shapito_key_init(&server->key_client);
shapito_stream_init(&server->stream);
shapito_stream_init(&server->stream_params);
od_list_init(&server->link);
memset(&server->id, 0, sizeof(server->id));
memset(&server->last_client_id, 0, sizeof(server->last_client_id));
@ -87,6 +89,7 @@ static inline void
od_server_free(od_server_t *server)
{
shapito_stream_free(&server->stream);
shapito_stream_free(&server->stream_params);
if (server->is_allocated)
free(server);
}