X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;ds=sidebyside;f=src%2Fconnection.c;h=9381b53fc8374d0975b8309a9730076ff61566ae;hb=57e4ad5d9d4b321cbd7af18584f805835226a981;hp=643f1a7c61c5b1d941290873cd519964b070380f;hpb=39e16afca77ea4bfaee853ff5b689be8fd82de45;p=pazpar2-moved-to-github.git diff --git a/src/connection.c b/src/connection.c index 643f1a7..9381b53 100644 --- a/src/connection.c +++ b/src/connection.c @@ -1,5 +1,5 @@ /* This file is part of Pazpar2. - Copyright (C) 2006-2010 Index Data + Copyright (C) 2006-2011 Index Data Pazpar2 is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free @@ -48,22 +48,39 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA #include "settings.h" /* connection counting (1) , disable connection counting (0) */ -#if 0 +#if 1 static YAZ_MUTEX g_mutex = 0; static int no_connections = 0; +static int total_no_connections = 0; -static void connection_use(int delta) +static int connection_use(int delta) { + int result; if (!g_mutex) yaz_mutex_create(&g_mutex); yaz_mutex_enter(g_mutex); no_connections += delta; + result = no_connections; + if (delta > 0) + total_no_connections += delta; yaz_mutex_leave(g_mutex); + if (delta == 0) + return result; yaz_log(YLOG_LOG, "%s connections=%d", delta > 0 ? "INC" : "DEC", no_connections); + return result; +} + +int connections_count(void) +{ + return connection_use(0); } + + #else #define connection_use(x) +#define connections_count(x) 0 +#define connections_count_total(x) 0 #endif @@ -78,7 +95,8 @@ struct connection { enum { Conn_Resolving, Conn_Connecting, - Conn_Open + Conn_Open, + Conn_Dead } state; int operation_timeout; int session_timeout; @@ -133,14 +151,13 @@ static void connection_destroy(struct connection *co) ZOOM_connection_destroy(co->link); iochan_destroy(co->iochan); } - yaz_log(YLOG_DEBUG, "Connection destroy %s", co->host->hostport); + yaz_log(YLOG_DEBUG, "%p Connection destroy %s", co, co->host->hostport); if (co->client) { client_disconnect(co->client); } - remove_connection_from_host(co); xfree(co->zproxy); xfree(co); connection_use(-1); @@ -149,12 +166,12 @@ static void connection_destroy(struct connection *co) // Creates a new connection for client, associated with the host of // client's database static struct connection *connection_create(struct client *cl, + struct host *host, int operation_timeout, int session_timeout, iochan_man_t iochan_man) { struct connection *co; - struct host *host = client_get_host(cl); co = xmalloc(sizeof(*co)); co->host = host; @@ -166,8 +183,8 @@ static struct connection *connection_create(struct client *cl, co->state = Conn_Resolving; co->operation_timeout = operation_timeout; co->session_timeout = session_timeout; - if (host->ipport) - connection_connect(co, iochan_man); + + connection_connect(co, iochan_man); yaz_mutex_enter(host->mutex); co->next = co->host->connections; @@ -206,7 +223,7 @@ static void non_block_events(struct connection *co) if ((err = ZOOM_connection_error(link, &error, &addinfo))) { yaz_log(YLOG_LOG, "Error %s from %s", - error, client_get_url(cl)); + error, client_get_id(cl)); client_set_diagnostic(cl, err); client_set_state(cl, Client_Error); } @@ -231,7 +248,7 @@ static void non_block_events(struct connection *co) case ZOOM_EVENT_RECV_APDU: break; case ZOOM_EVENT_CONNECT: - yaz_log(YLOG_LOG, "Connected to %s", client_get_url(cl)); + yaz_log(YLOG_LOG, "Connected to %s", client_get_id(cl)); co->state = Conn_Open; break; case ZOOM_EVENT_RECV_SEARCH: @@ -243,7 +260,7 @@ static void non_block_events(struct connection *co) break; default: yaz_log(YLOG_LOG, "Unhandled event (%d) from %s", - ev, client_get_url(cl)); + ev, client_get_id(cl)); } } if (got_records) @@ -280,24 +297,28 @@ static void connection_handler(IOCHAN iochan, int event) a closed connection from the target.. Or, perhaps, an unexpected package.. We will just close the connection */ yaz_log(YLOG_LOG, "timeout connection %p event=%d", co, event); - connection_destroy(co); + remove_connection_from_host(co); yaz_mutex_leave(host->mutex); + connection_destroy(co); } else if (event & EVENT_TIMEOUT) { if (co->state == Conn_Connecting) { - yaz_log(YLOG_WARN, "connect timeout %s", client_get_url(cl)); + yaz_log(YLOG_WARN, "%p connect timeout %s", co, client_get_id(cl)); client_set_state(cl, Client_Error); + remove_connection_from_host(co); + yaz_mutex_leave(host->mutex); connection_destroy(co); } else { - yaz_log(YLOG_LOG, "idle timeout %s", client_get_url(cl)); + yaz_log(YLOG_LOG, "%p Connection idle timeout %s", co, client_get_id(cl)); + remove_connection_from_host(co); + yaz_mutex_leave(host->mutex); connection_destroy(co); } - yaz_mutex_leave(host->mutex); } else { @@ -331,48 +352,6 @@ static void connection_release(struct connection *co) co->client = 0; } -void connect_resolver_host(struct host *host, iochan_man_t iochan_man) -{ - struct connection *con; - -start: - yaz_mutex_enter(host->mutex); - con = host->connections; - while (con) - { - if (con->state == Conn_Resolving) - { - if (!host->ipport) /* unresolved */ - { - yaz_mutex_leave(host->mutex); - connection_destroy(con); - goto start; - /* start all over .. at some point it will be NULL */ - } - else if (!con->client) - { - yaz_mutex_leave(host->mutex); - connection_destroy(con); - /* start all over .. at some point it will be NULL */ - goto start; - } - else - { - yaz_mutex_leave(host->mutex); - connection_connect(con, iochan_man); - client_start_search(con->client); - goto start; - } - } - else - { - yaz_log(YLOG_LOG, "connect_resolver_host: state=%d", con->state); - con = con->next; - } - } - yaz_mutex_leave(host->mutex); -} - static struct host *connection_get_host(struct connection *con) { return con->host; @@ -392,7 +371,6 @@ static int connection_connect(struct connection *con, iochan_man_t iochan_man) const char *zproxy = session_setting_oneval(sdb, PZ_ZPROXY); const char *apdulog = session_setting_oneval(sdb, PZ_APDULOG); - assert(host->ipport); assert(con); ZOOM_options_set(zoptions, "async", "1"); @@ -417,7 +395,6 @@ static int connection_connect(struct connection *con, iochan_man_t iochan_man) if ((sru_version = session_setting_oneval(sdb, PZ_SRU_VERSION)) && *sru_version) ZOOM_options_set(zoptions, "sru_version", sru_version); - if (!(link = ZOOM_connection_create(zoptions))) { yaz_log(YLOG_FATAL|YLOG_ERRNO, "Failed to create ZOOM Connection"); @@ -433,7 +410,9 @@ static int connection_connect(struct connection *con, iochan_man_t iochan_man) ZOOM_connection_connect(link, http_hostport, 0); } else - ZOOM_connection_connect(link, host->ipport, 0); + { + ZOOM_connection_connect(link, host->hostport, 0); + } con->link = link; con->iochan = iochan_create(-1, connection_handler, 0, "connection_socket"); @@ -455,20 +434,37 @@ int client_prep_connection(struct client *cl, const struct timeval *abstime) { struct connection *co; - struct host *host = client_get_host(cl); struct session_database *sdb = client_get_database(cl); const char *zproxy = session_setting_oneval(sdb, PZ_ZPROXY); + const char *url = session_setting_oneval(sdb, PZ_URL); + struct host *host = 0; if (zproxy && zproxy[0] == '\0') zproxy = 0; - if (!host) - return 0; + if (!url || !*url) + url = sdb->database->id; - co = client_get_connection(cl); + host = find_host(client_get_session(cl)->service->server->database_hosts, + url); + + yaz_log(YLOG_DEBUG, "client_prep_connection: target=%s url=%s", + client_get_id(cl), url); - yaz_log(YLOG_DEBUG, "Client prep %s", client_get_url(cl)); + co = client_get_connection(cl); + if (co) + { + assert(co->host); + if (co->host == host) + ; /* reusing connection. It's ours! */ + else + { + client_incref(cl); + connection_release(co); + co = 0; + } + } if (!co) { int max_connections = 0; @@ -477,7 +473,7 @@ int client_prep_connection(struct client *cl, PZ_MAX_CONNECTIONS); if (v && *v) max_connections = atoi(v); - + v = session_setting_oneval(client_get_database(cl), PZ_REUSE_CONNECTIONS); if (v && *v) @@ -491,7 +487,8 @@ int client_prep_connection(struct client *cl, int num_connections = 0; for (co = host->connections; co; co = co->next) num_connections++; - if (reuse_connections) { + if (reuse_connections) + { for (co = host->connections; co; co = co->next) { if (connection_is_idle(co) && @@ -522,7 +519,7 @@ int client_prep_connection(struct client *cl, num_connections, max_connections); if (yaz_cond_wait(host->cond_ready, host->mutex, abstime)) { - yaz_log(YLOG_LOG, "out of connections %s", client_get_url(cl)); + yaz_log(YLOG_LOG, "out of connections %s", client_get_id(cl)); client_set_state(cl, Client_Error); yaz_mutex_leave(host->mutex); return 0; @@ -530,6 +527,7 @@ int client_prep_connection(struct client *cl, } if (co) { + yaz_log(YLOG_LOG, "%p Connection reuse. state: %d", co, co->state); connection_release(co); client_set_connection(cl, co); co->client = cl; @@ -546,9 +544,10 @@ int client_prep_connection(struct client *cl, else { yaz_mutex_leave(host->mutex); - co = connection_create(cl, operation_timeout, session_timeout, + co = connection_create(cl, host, operation_timeout, session_timeout, iochan_man); } + assert(co->host); } if (co && co->link)