mirror of https://github.com/yandex/odyssey.git
90 lines
2.0 KiB
C
90 lines
2.0 KiB
C
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/*
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* odissey.
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*
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* PostgreSQL connection pooler and request router.
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*/
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <machinarium.h>
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#include <soprano.h>
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#include "od_macro.h"
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#include "od_list.h"
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#include "od_log.h"
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#include "od_scheme.h"
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#include "od_lex.h"
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#include "od_config.h"
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#include "od_server.h"
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#include "od_server_pool.h"
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#include "od_route_id.h"
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#include "od_route.h"
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#include "od_route_pool.h"
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#include "od_client.h"
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#include "od_client_pool.h"
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#include "od.h"
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#include "od_io.h"
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#include "od_pooler.h"
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#include "od_cancel.h"
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#include "od_fe.h"
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#include "od_be.h"
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static inline int
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od_cancel_cmp(odserver_t *server, void *arg)
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{
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sokey_t *key = arg;
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return so_keycmp(&server->key_client, key);
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}
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int od_cancel_of(odpooler_t *pooler,
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odscheme_server_t *server_scheme,
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sokey_t *key)
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{
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mmio_t io = mm_io_new(pooler->env);
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if (io == NULL)
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return -1;
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/* connect to server */
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int rc;
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rc = mm_connect(io, server_scheme->host,
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server_scheme->port, 0);
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if (rc < 0) {
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od_error(&pooler->od->log, "(cancel) failed to connect to %s:%d",
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server_scheme->host,
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server_scheme->port);
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mm_close(io);
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return -1;
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}
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/* send cancel and disconnect */
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sostream_t stream;
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so_stream_init(&stream);
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rc = so_fewrite_cancel(&stream, key->key_pid, key->key);
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if (rc == -1) {
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mm_close(io);
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so_stream_free(&stream);
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return -1;
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}
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od_write(io, &stream);
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mm_close(io);
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so_stream_free(&stream);
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return 0;
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}
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int od_cancel(odpooler_t *pooler, sokey_t *key)
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{
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/* match server by client key (forge) */
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odserver_t *server;
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server = od_routepool_foreach(&pooler->route_pool, OD_SACTIVE,
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od_cancel_cmp, key);
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if (server == NULL)
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return -1;
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odroute_t *route = server->route;
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odscheme_server_t *server_scheme = route->scheme->server;
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sokey_t cancel_key = server->key;
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return od_cancel_of(pooler, server_scheme, &cancel_key);
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}
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