X-Git-Url: http://git.indexdata.com/?a=blobdiff_plain;f=src%2Fconnection.c;h=1ed62295c2964dbad585be45724bf6216da93a4c;hb=4f3cae465927f5127f9c8b637cf7b07908f566d3;hp=012d99492cf54fa74017975918339ddf41acb5fb;hpb=8432e60d3fa90e5bb4abf49607fdeca3fa8a19ba;p=pazpar2-moved-to-github.git diff --git a/src/connection.c b/src/connection.c index 012d994..1ed6229 100644 --- a/src/connection.c +++ b/src/connection.c @@ -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 @@ -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) @@ -288,7 +305,7 @@ static void connection_handler(IOCHAN iochan, int event) { if (co->state == Conn_Connecting) { - yaz_log(YLOG_WARN, "%p connect timeout %s", co, 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); @@ -297,7 +314,7 @@ static void connection_handler(IOCHAN iochan, int event) } else { - yaz_log(YLOG_LOG, "%p Connection idle timeout %s", co, 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); @@ -335,50 +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 */ - { - remove_connection_from_host(con); - yaz_mutex_leave(host->mutex); - connection_destroy(con); - goto start; - /* start all over .. at some point it will be NULL */ - } - else if (!con->client) - { - remove_connection_from_host(con); - 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; @@ -398,7 +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"); @@ -437,10 +409,10 @@ static int connection_connect(struct connection *con, iochan_man_t iochan_man) strcat(http_hostport, host->hostport); ZOOM_connection_connect(link, http_hostport, 0); } - else if (zproxy && *zproxy) - ZOOM_connection_connect(link, host->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"); @@ -449,7 +421,6 @@ static int connection_connect(struct connection *con, iochan_man_t iochan_man) iochan_setdata(con->iochan, con); iochan_add(iochan_man, con->iochan); - /* this fragment is bad DRY: from client_prep_connection */ client_set_state(con->client, Client_Connecting); ZOOM_options_destroy(zoptions); return 0; @@ -462,20 +433,37 @@ 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 %s", client_get_url(cl)); + yaz_log(YLOG_DEBUG, "client_prep_connection: target=%s url=%s", + client_get_id(cl), url); + 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; @@ -484,7 +472,7 @@ 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) @@ -498,7 +486,8 @@ 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) && @@ -529,7 +518,7 @@ 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; @@ -554,9 +543,10 @@ 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)