fca09e0d7b
The service start retry mechanism mistakenly returned an error when a service failed to start but a retry was queued. This caused MaxScale to stop whenever a service failed to start.
2026 lines
53 KiB
C
2026 lines
53 KiB
C
/*
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* Copyright (c) 2016 MariaDB Corporation Ab
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*
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* Use of this software is governed by the Business Source License included
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* in the LICENSE.TXT file and at www.mariadb.com/bsl.
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*
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* Change Date: 2019-01-01
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*
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* On the date above, in accordance with the Business Source License, use
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* of this software will be governed by version 2 or later of the General
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* Public License.
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*/
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/**
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* @file service.c - A representation of the service within the gateway.
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*
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* @verbatim
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* Revision History
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*
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* Date Who Description
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* 18/06/13 Mark Riddoch Initial implementation
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* 24/06/13 Massimiliano Pinto Added: Loading users from mysql backend in serviceStart
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* 06/02/14 Massimiliano Pinto Added: serviceEnableRootUser routine
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* 25/02/14 Massimiliano Pinto Added: service refresh limit feature
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* 28/02/14 Massimiliano Pinto users_alloc moved from service_alloc to
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* serviceStartPort (generic hashable for services)
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* 07/05/14 Massimiliano Pinto Added: version_string initialized to NULL
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* 23/05/14 Mark Riddoch Addition of service validation call
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* 29/05/14 Mark Riddoch Filter API implementation
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* 09/09/14 Massimiliano Pinto Added service option for localhost authentication
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* 13/10/14 Massimiliano Pinto Added hashtable for resources (i.e database names for MySQL services)
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* 06/02/15 Mark Riddoch Added caching of authentication data
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* 18/02/15 Mark Riddoch Added result set management
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* 03/03/15 Massimiliano Pinto Added config_enable_feedback_task() call in serviceStartAll
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* 19/06/15 Martin Brampton More meaningful names for temp variables
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* 31/05/16 Martin Brampton Implement connection throttling
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*
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* @endverbatim
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <errno.h>
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#include <session.h>
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#include <service.h>
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#include <gw_protocol.h>
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#include <listener.h>
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#include <server.h>
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#include <router.h>
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#include <spinlock.h>
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#include <modules.h>
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#include <dcb.h>
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#include <users.h>
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#include <filter.h>
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#include <dbusers.h>
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#include <maxscale/poll.h>
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#include <skygw_utils.h>
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#include <log_manager.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <housekeeper.h>
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#include <resultset.h>
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#include <gw.h>
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#include <gwdirs.h>
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#include <math.h>
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#include <version.h>
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#include <queuemanager.h>
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/** To be used with configuration type checks */
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typedef struct typelib_st
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{
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int tl_nelems;
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const char* tl_name;
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const char** tl_p_elems;
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} typelib_t;
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/** Set of subsequent false,true pairs */
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static const char* bool_strings[11] = {"FALSE", "TRUE", "OFF", "ON", "N", "Y", "0", "1", "NO", "YES", 0};
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typelib_t bool_type = {array_nelems(bool_strings) - 1, "bool_type", bool_strings};
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/** List of valid values */
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static const char* sqlvar_target_strings[4] = {"MASTER", "ALL", 0};
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typelib_t sqlvar_target_type =
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{
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array_nelems(sqlvar_target_strings) - 1,
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"sqlvar_target_type",
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sqlvar_target_strings
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};
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static SPINLOCK service_spin = SPINLOCK_INIT;
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static SERVICE *allServices = NULL;
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static int find_type(typelib_t* tl, const char* needle, int maxlen);
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static void service_add_qualified_param(SERVICE* svc,
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CONFIG_PARAMETER* param);
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static void service_internal_restart(void *data);
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/**
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* Allocate a new service for the gateway to support
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*
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*
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* @param servname The service name
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* @param router Name of the router module this service uses
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*
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* @return The newly created service or NULL if an error occurred
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*/
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SERVICE *
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service_alloc(const char *servname, const char *router)
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{
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SERVICE *service;
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if ((service = (SERVICE *)calloc(1, sizeof(SERVICE))) == NULL)
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{
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return NULL;
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}
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if ((service->router = load_module(router, MODULE_ROUTER)) == NULL)
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{
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char* home = get_libdir();
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char* ldpath = getenv("LD_LIBRARY_PATH");
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MXS_ERROR("Unable to load %s module \"%s\".\n\t\t\t"
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" Ensure that lib%s.so exists in one of the "
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"following directories :\n\t\t\t "
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"- %s\n%s%s",
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MODULE_ROUTER,
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router,
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router,
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home,
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ldpath ? "\t\t\t - " : "",
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ldpath ? ldpath : "");
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free(service);
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return NULL;
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}
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service->client_count = 0;
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service->name = strdup(servname);
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service->routerModule = strdup(router);
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service->users_from_all = false;
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service->queued_connections = NULL;
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service->resources = NULL;
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service->localhost_match_wildcard_host = SERVICE_PARAM_UNINIT;
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service->retry_start = true;
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service->conn_idle_timeout = SERVICE_NO_SESSION_TIMEOUT;
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service->weightby = NULL;
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service->credentials.authdata = NULL;
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service->credentials.name = NULL;
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service->version_string = NULL;
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service->svc_config_param = NULL;
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service->users = NULL;
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service->routerOptions = NULL;
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service->log_auth_warnings = true;
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service->strip_db_esc = true;
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if (service->name == NULL || service->routerModule == NULL)
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{
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if (service->name)
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{
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free(service->name);
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}
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free(service);
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return NULL;
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}
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service->stats.started = time(0);
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service->stats.n_failed_starts = 0;
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service->state = SERVICE_STATE_ALLOC;
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spinlock_init(&service->spin);
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spinlock_init(&service->users_table_spin);
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spinlock_acquire(&service_spin);
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service->next = allServices;
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allServices = service;
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spinlock_release(&service_spin);
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return service;
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}
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/**
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* Check to see if a service pointer is valid
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*
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* @param service The pointer to check
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* @return 1 if the service is in the list of all services
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*/
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int
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service_isvalid(SERVICE *service)
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{
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SERVICE *checkservice;
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int rval = 0;
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spinlock_acquire(&service_spin);
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checkservice = allServices;
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while (checkservice)
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{
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if (checkservice == service)
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{
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rval = 1;
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break;
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}
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checkservice = checkservice->next;
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}
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spinlock_release(&service_spin);
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return rval;
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}
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/**
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* Start an individual port/protocol pair
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*
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* @param service The service
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* @param port The port to start
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* @return The number of listeners started
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*/
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static int
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serviceStartPort(SERVICE *service, SERV_LISTENER *port)
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{
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int listeners = 0;
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char config_bind[40];
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GWPROTOCOL *funcs;
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if (service == NULL || service->router == NULL || service->router_instance == NULL)
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{
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/* Should never happen, this guarantees it can't */
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MXS_ERROR("Attempt to start port with null or incomplete service");
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goto retblock;
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}
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port->listener = dcb_alloc(DCB_ROLE_SERVICE_LISTENER, port);
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if (port->listener == NULL)
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{
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MXS_ERROR("Failed to create listener for service %s.", service->name);
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goto retblock;
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}
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if (port->ssl)
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{
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listener_init_SSL(port->ssl);
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}
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if (strcmp(port->protocol, "MySQLClient") == 0)
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{
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int loaded;
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if (service->users == NULL)
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{
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/*
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* Allocate specific data for MySQL users
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* including hosts and db names
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*/
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service->users = mysql_users_alloc();
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if ((loaded = load_mysql_users(service)) < 0)
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{
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MXS_ERROR("Unable to load users for "
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"service %s listening at %s:%d.",
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service->name,
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(port->address == NULL ? "0.0.0.0" : port->address),
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port->port);
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{
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/* Try loading authentication data from file cache */
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char *ptr, path[PATH_MAX + 1];
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strncpy(path, get_cachedir(), sizeof(path) - 1);
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strncat(path, "/", sizeof(path) - 1);
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strncat(path, service->name, sizeof(path) - 1);
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strncat(path, "/.cache/dbusers", sizeof(path) - 1);
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loaded = dbusers_load(service->users, path);
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if (loaded != -1)
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{
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MXS_ERROR("Using cached credential information.");
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}
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}
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if (loaded == -1)
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{
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users_free(service->users);
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service->users = NULL;
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dcb_close(port->listener);
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port->listener = NULL;
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goto retblock;
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}
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}
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else
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{
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/* Save authentication data to file cache */
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char *ptr, path[PATH_MAX + 1];
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int mkdir_rval = 0;
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strncpy(path, get_cachedir(), PATH_MAX);
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strncat(path, "/", 4096);
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strncat(path, service->name, PATH_MAX);
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if (access(path, R_OK) == -1)
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{
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mkdir_rval = mkdir(path, 0777);
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}
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if (mkdir_rval)
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{
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if (errno != EEXIST)
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{
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char errbuf[STRERROR_BUFLEN];
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MXS_ERROR("Failed to create directory '%s': [%d] %s",
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path,
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errno,
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strerror_r(errno, errbuf, sizeof(errbuf)));
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}
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mkdir_rval = 0;
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}
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strncat(path, "/.cache", PATH_MAX);
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if (access(path, R_OK) == -1)
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{
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mkdir_rval = mkdir(path, 0777);
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}
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if (mkdir_rval)
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{
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if (errno != EEXIST)
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{
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char errbuf[STRERROR_BUFLEN];
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MXS_ERROR("Failed to create directory '%s': [%d] %s",
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path,
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errno,
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strerror_r(errno, errbuf, sizeof(errbuf)));
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}
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mkdir_rval = 0;
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}
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strncat(path, "/dbusers", PATH_MAX);
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dbusers_save(service->users, path);
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}
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if (loaded == 0)
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{
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MXS_ERROR("Service %s: failed to load any user "
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"information. Authentication will "
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"probably fail as a result.",
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service->name);
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}
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/* At service start last update is set to USERS_REFRESH_TIME seconds earlier.
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* This way MaxScale could try reloading users' just after startup
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*/
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service->rate_limit.last = time(NULL) - USERS_REFRESH_TIME;
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service->rate_limit.nloads = 1;
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MXS_NOTICE("Loaded %d MySQL Users for service [%s].",
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loaded, service->name);
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}
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}
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else
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{
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if (service->users == NULL)
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{
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/* Generic users table */
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service->users = users_alloc();
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}
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}
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if ((funcs = (GWPROTOCOL *)load_module(port->protocol, MODULE_PROTOCOL)) == NULL)
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{
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users_free(service->users);
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service->users = NULL;
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dcb_close(port->listener);
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service->users = NULL;
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port->listener = NULL;
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MXS_ERROR("Unable to load protocol module %s. Listener "
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"for service %s not started.",
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port->protocol,
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service->name);
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goto retblock;
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}
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memcpy(&(port->listener->func), funcs, sizeof(GWPROTOCOL));
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if (port->address)
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{
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sprintf(config_bind, "%s:%d", port->address, port->port);
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}
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else
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{
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sprintf(config_bind, "0.0.0.0:%d", port->port);
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}
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if (port->listener->func.listen(port->listener, config_bind))
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{
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port->listener->session = session_alloc(service, port->listener);
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if (port->listener->session != NULL)
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{
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port->listener->session->state = SESSION_STATE_LISTENER;
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listeners += 1;
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}
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else
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{
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MXS_ERROR("Failed to create session to service %s.",
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service->name);
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users_free(service->users);
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service->users = NULL;
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dcb_close(port->listener);
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port->listener = NULL;
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service->users = NULL;
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goto retblock;
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}
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}
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else
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{
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MXS_ERROR("Unable to start to listen port %d for %s %s.",
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port->port,
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port->protocol,
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service->name);
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users_free(service->users);
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service->users = NULL;
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dcb_close(port->listener);
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port->listener = NULL;
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}
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retblock:
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return listeners;
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}
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/**
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* Start all ports for a service.
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* serviceStartAllPorts will try to start all listeners associated with the service.
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* If no listeners are started, the starting of ports will be retried after a period of time.
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* @param service Service to start
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* @return Number of started listeners. This is equal to the number of ports the service
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* is listening to.
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*/
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int serviceStartAllPorts(SERVICE* service)
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{
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SERV_LISTENER *port = service->ports;
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int listeners = 0;
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if (port)
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{
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while (!service->svc_do_shutdown && port)
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{
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listeners += serviceStartPort(service, port);
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port = port->next;
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}
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if (listeners)
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{
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service->state = SERVICE_STATE_STARTED;
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service->stats.started = time(0);
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}
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else if (service->retry_start)
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{
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/** Service failed to start any ports. Try again later. */
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service->stats.n_failed_starts++;
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char taskname[strlen(service->name) + strlen("_start_retry_") +
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(int) ceil(log10(INT_MAX)) + 1];
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int retry_after = MIN(service->stats.n_failed_starts * 10, SERVICE_MAX_RETRY_INTERVAL);
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snprintf(taskname, sizeof(taskname), "%s_start_retry_%d",
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service->name, service->stats.n_failed_starts);
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hktask_oneshot(taskname, service_internal_restart,
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(void*) service, retry_after);
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MXS_NOTICE("Failed to start service %s, retrying in %d seconds.",
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service->name, retry_after);
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|
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/** This will prevent MaxScale from shutting down if service start is retried later */
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listeners = 1;
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}
|
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}
|
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else
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{
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MXS_WARNING("Service '%s' has no listeners defined.", service->name);
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listeners = 1; /** Set this to one to suppress errors */
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}
|
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|
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return listeners;
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}
|
|
|
|
/** Helper function for copying an array of strings */
|
|
static char** copy_string_array(char** original)
|
|
{
|
|
char **array = NULL;
|
|
|
|
if (original)
|
|
{
|
|
int values = 0;
|
|
|
|
while (original[values])
|
|
{
|
|
values++;
|
|
}
|
|
|
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array = malloc(sizeof(char*) * (values + 1));
|
|
|
|
if (array)
|
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{
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for (int i = 0; i < values; i++)
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|
{
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array[i] = strdup(original[i]);
|
|
}
|
|
array[values] = NULL;
|
|
}
|
|
}
|
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return array;
|
|
}
|
|
|
|
/** Helper function for freeing an array of strings */
|
|
static void free_string_array(char** array)
|
|
{
|
|
if (array)
|
|
{
|
|
for (int i = 0; array[i]; i++)
|
|
{
|
|
free(array[i]);
|
|
}
|
|
free(array);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Start a service
|
|
*
|
|
* This function loads the protocol modules for each port on which the
|
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* service listens and starts the listener on that port
|
|
*
|
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* Also create the router_instance for the service.
|
|
*
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|
* @param service The Service that should be started
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|
* @return Returns the number of listeners created
|
|
*/
|
|
int
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serviceStart(SERVICE *service)
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|
{
|
|
int listeners = 0;
|
|
|
|
if (check_service_permissions(service))
|
|
{
|
|
char **router_options = copy_string_array(service->routerOptions);
|
|
if ((service->router_instance = service->router->createInstance(
|
|
service, router_options)))
|
|
{
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|
listeners += serviceStartAllPorts(service);
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|
}
|
|
else
|
|
{
|
|
MXS_ERROR("%s: Failed to create router instance for service. Service not started.",
|
|
service->name);
|
|
service->state = SERVICE_STATE_FAILED;
|
|
}
|
|
free_string_array(router_options);
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("%s: Inadequate user permissions for service. Service not started.",
|
|
service->name);
|
|
service->state = SERVICE_STATE_FAILED;
|
|
}
|
|
return listeners;
|
|
}
|
|
|
|
/**
|
|
* Start an individual listener
|
|
*
|
|
* @param service The service to start the listener for
|
|
* @param protocol The name of the protocol
|
|
* @param port The port number
|
|
*/
|
|
void
|
|
serviceStartProtocol(SERVICE *service, char *protocol, int port)
|
|
{
|
|
SERV_LISTENER *ptr;
|
|
|
|
ptr = service->ports;
|
|
while (ptr)
|
|
{
|
|
if (strcmp(ptr->protocol, protocol) == 0 && ptr->port == port)
|
|
{
|
|
serviceStartPort(service, ptr);
|
|
}
|
|
ptr = ptr->next;
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Start all the services
|
|
*
|
|
* @return Return the number of services started
|
|
*/
|
|
int
|
|
serviceStartAll()
|
|
{
|
|
SERVICE *ptr;
|
|
int n = 0, i;
|
|
bool error = false;
|
|
|
|
config_enable_feedback_task();
|
|
|
|
ptr = allServices;
|
|
while (ptr && !ptr->svc_do_shutdown)
|
|
{
|
|
n += (i = serviceStart(ptr));
|
|
|
|
if (i == 0)
|
|
{
|
|
MXS_ERROR("Failed to start service '%s'.", ptr->name);
|
|
error = true;
|
|
}
|
|
|
|
ptr = ptr->next;
|
|
}
|
|
return error ? 0 : n;
|
|
}
|
|
|
|
/**
|
|
* Stop a service
|
|
*
|
|
* This function stops the listener for the service
|
|
*
|
|
* @param service The Service that should be stopped
|
|
* @return Returns the number of listeners restarted
|
|
*/
|
|
int
|
|
serviceStop(SERVICE *service)
|
|
{
|
|
SERV_LISTENER *port;
|
|
int listeners = 0;
|
|
|
|
port = service->ports;
|
|
while (port)
|
|
{
|
|
if (port->listener && port->listener->session->state == SESSION_STATE_LISTENER)
|
|
{
|
|
if (poll_remove_dcb(port->listener) == 0)
|
|
{
|
|
port->listener->session->state = SESSION_STATE_LISTENER_STOPPED;
|
|
listeners++;
|
|
}
|
|
}
|
|
port = port->next;
|
|
}
|
|
service->state = SERVICE_STATE_STOPPED;
|
|
|
|
return listeners;
|
|
}
|
|
|
|
/**
|
|
* Restart a service
|
|
*
|
|
* This function stops the listener for the service
|
|
*
|
|
* @param service The Service that should be restarted
|
|
* @return Returns the number of listeners restarted
|
|
*/
|
|
int
|
|
serviceRestart(SERVICE *service)
|
|
{
|
|
SERV_LISTENER *port;
|
|
int listeners = 0;
|
|
|
|
port = service->ports;
|
|
while (port)
|
|
{
|
|
if (port->listener && port->listener->session->state == SESSION_STATE_LISTENER_STOPPED)
|
|
{
|
|
if (poll_add_dcb(port->listener) == 0)
|
|
{
|
|
port->listener->session->state = SESSION_STATE_LISTENER;
|
|
listeners++;
|
|
}
|
|
}
|
|
port = port->next;
|
|
}
|
|
service->state = SERVICE_STATE_STARTED;
|
|
return listeners;
|
|
}
|
|
|
|
|
|
/**
|
|
* Deallocate the specified service
|
|
*
|
|
* @param service The service to deallocate
|
|
* @return Returns true if the service was freed
|
|
*/
|
|
int
|
|
service_free(SERVICE *service)
|
|
{
|
|
SERVICE *ptr;
|
|
SERVER_REF *srv;
|
|
if (service->stats.n_current)
|
|
{
|
|
return 0;
|
|
}
|
|
/* First of all remove from the linked list */
|
|
spinlock_acquire(&service_spin);
|
|
if (allServices == service)
|
|
{
|
|
allServices = service->next;
|
|
}
|
|
else
|
|
{
|
|
ptr = allServices;
|
|
while (ptr && ptr->next != service)
|
|
{
|
|
ptr = ptr->next;
|
|
}
|
|
if (ptr)
|
|
{
|
|
ptr->next = service->next;
|
|
}
|
|
}
|
|
spinlock_release(&service_spin);
|
|
|
|
/* Clean up session and free the memory */
|
|
while (service->dbref)
|
|
{
|
|
srv = service->dbref;
|
|
service->dbref = service->dbref->next;
|
|
free(srv);
|
|
}
|
|
|
|
free(service->name);
|
|
free(service->routerModule);
|
|
free(service->weightby);
|
|
free(service->version_string);
|
|
free(service->credentials.name);
|
|
free(service->credentials.authdata);
|
|
|
|
free_config_parameter(service->svc_config_param);
|
|
users_free(service->users);
|
|
hashtable_free(service->resources);
|
|
serviceClearRouterOptions(service);
|
|
|
|
free(service);
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Add a protocol/port pair to the service
|
|
*
|
|
* @param service The service
|
|
* @param protocol The name of the protocol module
|
|
* @param address The address to listen with
|
|
* @param port The port to listen on
|
|
* @param authenticator Name of the authenticator to be used
|
|
* @param ssl SSL configuration
|
|
* @return TRUE if the protocol/port could be added
|
|
*/
|
|
int
|
|
serviceAddProtocol(SERVICE *service, char *protocol, char *address, unsigned short port, char *authenticator,
|
|
SSL_LISTENER *ssl)
|
|
{
|
|
SERV_LISTENER *proto;
|
|
|
|
if ((proto = listener_alloc(protocol, address, port, authenticator, ssl)) != NULL)
|
|
{
|
|
spinlock_acquire(&service->spin);
|
|
proto->next = service->ports;
|
|
service->ports = proto;
|
|
spinlock_release(&service->spin);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Check if a protocol/port pair is part of the service
|
|
*
|
|
* @param service The service
|
|
* @param protocol The name of the protocol module
|
|
* @param address The address to listen on
|
|
* @param port The port to listen on
|
|
* @return TRUE if the protocol/port is already part of the service
|
|
*/
|
|
int serviceHasProtocol(SERVICE *service, const char *protocol,
|
|
const char* address, unsigned short port)
|
|
{
|
|
SERV_LISTENER *proto;
|
|
|
|
spinlock_acquire(&service->spin);
|
|
proto = service->ports;
|
|
while (proto)
|
|
{
|
|
if (strcmp(proto->protocol, protocol) == 0 && proto->port == port &&
|
|
((address && proto->address && strcmp(proto->address, address) == 0) ||
|
|
(address == NULL && proto->address == NULL)))
|
|
{
|
|
break;
|
|
}
|
|
proto = proto->next;
|
|
}
|
|
spinlock_release(&service->spin);
|
|
|
|
return proto != NULL;
|
|
}
|
|
|
|
/**
|
|
* Add a backend database server to a service
|
|
*
|
|
* @param service The service to add the server to
|
|
* @param server The server to add
|
|
*/
|
|
void
|
|
serviceAddBackend(SERVICE *service, SERVER *server)
|
|
{
|
|
SERVER_REF *sref = malloc(sizeof(SERVER_REF));
|
|
|
|
if (sref)
|
|
{
|
|
sref->next = NULL;
|
|
sref->server = server;
|
|
|
|
spinlock_acquire(&service->spin);
|
|
if (service->dbref)
|
|
{
|
|
SERVER_REF *ref = service->dbref;
|
|
while (ref->next)
|
|
{
|
|
ref = ref->next;
|
|
}
|
|
ref->next = sref;
|
|
}
|
|
else
|
|
{
|
|
service->dbref = sref;
|
|
}
|
|
spinlock_release(&service->spin);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test if a server is part of a service
|
|
*
|
|
* @param service The service to add the server to
|
|
* @param server The server to add
|
|
* @return Non-zero if the server is already part of the service
|
|
*/
|
|
int
|
|
serviceHasBackend(SERVICE *service, SERVER *server)
|
|
{
|
|
SERVER_REF *ptr;
|
|
|
|
spinlock_acquire(&service->spin);
|
|
ptr = service->dbref;
|
|
while (ptr && ptr->server != server)
|
|
{
|
|
ptr = ptr->next;
|
|
}
|
|
spinlock_release(&service->spin);
|
|
|
|
return ptr != NULL;
|
|
}
|
|
|
|
/**
|
|
* Add a router option to a service
|
|
*
|
|
* @param service The service to add the router option to
|
|
* @param option The option string
|
|
*/
|
|
void
|
|
serviceAddRouterOption(SERVICE *service, char *option)
|
|
{
|
|
int i;
|
|
|
|
spinlock_acquire(&service->spin);
|
|
if (service->routerOptions == NULL)
|
|
{
|
|
service->routerOptions = (char **)calloc(2, sizeof(char *));
|
|
service->routerOptions[0] = strdup(option);
|
|
service->routerOptions[1] = NULL;
|
|
}
|
|
else
|
|
{
|
|
for (i = 0; service->routerOptions[i]; i++)
|
|
{
|
|
;
|
|
}
|
|
service->routerOptions = (char **)realloc(service->routerOptions,
|
|
(i + 2) * sizeof(char *));
|
|
service->routerOptions[i] = strdup(option);
|
|
service->routerOptions[i + 1] = NULL;
|
|
}
|
|
spinlock_release(&service->spin);
|
|
}
|
|
|
|
/**
|
|
* Remove the router options for the service
|
|
*
|
|
* @param service The service to remove the options from
|
|
*/
|
|
void
|
|
serviceClearRouterOptions(SERVICE *service)
|
|
{
|
|
int i;
|
|
|
|
spinlock_acquire(&service->spin);
|
|
if (service->routerOptions != NULL)
|
|
{
|
|
for (i = 0; service->routerOptions[i]; i++)
|
|
{
|
|
free(service->routerOptions[i]);
|
|
}
|
|
free(service->routerOptions);
|
|
service->routerOptions = NULL;
|
|
}
|
|
spinlock_release(&service->spin);
|
|
}
|
|
/**
|
|
* Set the service user that is used to log in to the backebd servers
|
|
* associated with this service.
|
|
*
|
|
* @param service The service we are setting the data for
|
|
* @param user The user name to use for connections
|
|
* @param auth The authentication data we need, e.g. MySQL SHA1 password
|
|
* @return 0 on failure
|
|
*/
|
|
int
|
|
serviceSetUser(SERVICE *service, char *user, char *auth)
|
|
{
|
|
if (service->credentials.name)
|
|
{
|
|
free(service->credentials.name);
|
|
}
|
|
if (service->credentials.authdata)
|
|
{
|
|
free(service->credentials.authdata);
|
|
}
|
|
service->credentials.name = strdup(user);
|
|
service->credentials.authdata = strdup(auth);
|
|
|
|
if (service->credentials.name == NULL || service->credentials.authdata == NULL)
|
|
{
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Get the service user that is used to log in to the backebd servers
|
|
* associated with this service.
|
|
*
|
|
* @param service The service we are setting the data for
|
|
* @param user The user name to use for connections
|
|
* @param auth The authentication data we need, e.g. MySQL SHA1 password
|
|
* @return 0 on failure
|
|
*/
|
|
int
|
|
serviceGetUser(SERVICE *service, char **user, char **auth)
|
|
{
|
|
if (service->credentials.name == NULL || service->credentials.authdata == NULL)
|
|
{
|
|
return 0;
|
|
}
|
|
*user = service->credentials.name;
|
|
*auth = service->credentials.authdata;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Enable/Disable root user for this service
|
|
* associated with this service.
|
|
*
|
|
* @param service The service we are setting the data for
|
|
* @param action 1 for root enable, 0 for disable access
|
|
* @return 0 on failure
|
|
*/
|
|
|
|
int
|
|
serviceEnableRootUser(SERVICE *service, int action)
|
|
{
|
|
if (action != 0 && action != 1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
service->enable_root = action;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Enable/Disable loading the user data from only one server or all of them
|
|
*
|
|
* @param service The service we are setting the data for
|
|
* @param action 1 for all servers, 0 for single server
|
|
* @return 0 on failure
|
|
*/
|
|
|
|
int
|
|
serviceAuthAllServers(SERVICE *service, int action)
|
|
{
|
|
if (action != 0 && action != 1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
service->users_from_all = action;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Whether to strip escape characters from the name of the database the client
|
|
* is connecting to.
|
|
* @param service Service to configure
|
|
* @param action 0 for disabled, 1 for enabled
|
|
* @return 1 if successful, 0 on error
|
|
*/
|
|
int serviceStripDbEsc(SERVICE* service, int action)
|
|
{
|
|
if (action != 0 && action != 1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
service->strip_db_esc = action;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the session timeout for the service.
|
|
* @param service Service to configure
|
|
* @param val Timeout in seconds
|
|
* @return 1 on success, 0 when the value is invalid
|
|
*/
|
|
int
|
|
serviceSetTimeout(SERVICE *service, int val)
|
|
{
|
|
|
|
if (val < 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/** Enable the session timeout checks if and only if at least one service is
|
|
* configured with a idle timeout. */
|
|
if ((service->conn_idle_timeout = val))
|
|
{
|
|
enable_session_timeouts();
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Sets the connection limits, if any, for the service.
|
|
* @param service Service to configure
|
|
* @param max The maximum number of client connections at any one time
|
|
* @param queued The maximum number of connections to queue up when
|
|
* max_connections clients are already connected
|
|
* @return 1 on success, 0 when the values are invalid
|
|
*/
|
|
int
|
|
serviceSetConnectionLimits(SERVICE *service, int max, int queued, int timeout)
|
|
{
|
|
|
|
if (max < 0 || queued < 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
service->max_connections = max;
|
|
if (queued && timeout)
|
|
{
|
|
/* If memory allocation fails, result will be null so no queue */
|
|
service->queued_connections = mxs_queue_alloc(queued, timeout);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Enable or disable the restarting of the service on failure.
|
|
* @param service Service to configure
|
|
* @param value A string representation of a boolean value
|
|
*/
|
|
void serviceSetRetryOnFailure(SERVICE *service, char* value)
|
|
{
|
|
if (value)
|
|
{
|
|
service->retry_start = config_truth_value(value);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the filters used by the service
|
|
*
|
|
* @param service The service itself
|
|
* @param filters ASCII string of filters to use
|
|
* @return True if loading and creating all filters was successful. False if a
|
|
* filter module was not found or the instance creation failed.
|
|
*/
|
|
bool
|
|
serviceSetFilters(SERVICE *service, char *filters)
|
|
{
|
|
FILTER_DEF **flist;
|
|
char *ptr, *brkt;
|
|
int n = 0;
|
|
bool rval = true;
|
|
|
|
if ((flist = (FILTER_DEF **) malloc(sizeof(FILTER_DEF *))) == NULL)
|
|
{
|
|
MXS_ERROR("Out of memory adding filters to service.\n");
|
|
return false;
|
|
}
|
|
ptr = strtok_r(filters, "|", &brkt);
|
|
while (ptr)
|
|
{
|
|
n++;
|
|
FILTER_DEF **tmp;
|
|
if ((tmp = (FILTER_DEF **) realloc(flist,
|
|
(n + 1) * sizeof(FILTER_DEF *))) == NULL)
|
|
{
|
|
MXS_ERROR("Out of memory adding filters to service.");
|
|
rval = false;
|
|
break;
|
|
}
|
|
|
|
flist = tmp;
|
|
char *filter_name = trim(ptr);
|
|
|
|
if ((flist[n - 1] = filter_find(filter_name)))
|
|
{
|
|
if (!filter_load(flist[n - 1]))
|
|
{
|
|
MXS_ERROR("Failed to load filter '%s' for service '%s'.",
|
|
filter_name, service->name);
|
|
rval = false;
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("Unable to find filter '%s' for service '%s'\n",
|
|
filter_name, service->name);
|
|
rval = false;
|
|
break;
|
|
}
|
|
|
|
flist[n] = NULL;
|
|
ptr = strtok_r(NULL, "|", &brkt);
|
|
}
|
|
|
|
if (rval)
|
|
{
|
|
service->filters = flist;
|
|
service->n_filters = n;
|
|
}
|
|
else
|
|
{
|
|
free(flist);
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
/**
|
|
* Return a named service
|
|
*
|
|
* @param servname The name of the service to find
|
|
* @return The service or NULL if not found
|
|
*/
|
|
SERVICE *
|
|
service_find(char *servname)
|
|
{
|
|
SERVICE *service;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
service = allServices;
|
|
while (service && strcmp(service->name, servname) != 0)
|
|
{
|
|
service = service->next;
|
|
}
|
|
spinlock_release(&service_spin);
|
|
|
|
return service;
|
|
}
|
|
|
|
|
|
/**
|
|
* Print details of an individual service
|
|
*
|
|
* @param service Service to print
|
|
*/
|
|
void
|
|
printService(SERVICE *service)
|
|
{
|
|
SERVER_REF *ptr = service->dbref;
|
|
struct tm result;
|
|
char time_buf[30];
|
|
int i;
|
|
|
|
printf("Service %p\n", (void *)service);
|
|
printf("\tService: %s\n", service->name);
|
|
printf("\tRouter: %s (%p)\n",
|
|
service->routerModule, (void *)service->router);
|
|
printf("\tStarted: %s",
|
|
asctime_r(localtime_r(&service->stats.started, &result), time_buf));
|
|
printf("\tBackend databases\n");
|
|
while (ptr)
|
|
{
|
|
printf("\t\t%s:%d Protocol: %s\n", ptr->server->name, ptr->server->port, ptr->server->protocol);
|
|
ptr = ptr->next;
|
|
}
|
|
if (service->n_filters)
|
|
{
|
|
printf("\tFilter chain: ");
|
|
for (i = 0; i < service->n_filters; i++)
|
|
{
|
|
printf("%s %s ", service->filters[i]->name,
|
|
i + 1 < service->n_filters ? "|" : "");
|
|
}
|
|
printf("\n");
|
|
}
|
|
printf("\tUsers data: %p\n", (void *)service->users);
|
|
printf("\tTotal connections: %d\n", service->stats.n_sessions);
|
|
printf("\tCurrently connected: %d\n", service->stats.n_current);
|
|
}
|
|
|
|
/**
|
|
* Print all services
|
|
*
|
|
* Designed to be called within a debugger session in order
|
|
* to display all active services within the gateway
|
|
*/
|
|
void
|
|
printAllServices()
|
|
{
|
|
SERVICE *ptr;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
ptr = allServices;
|
|
while (ptr)
|
|
{
|
|
printService(ptr);
|
|
ptr = ptr->next;
|
|
}
|
|
spinlock_release(&service_spin);
|
|
}
|
|
|
|
/**
|
|
* Print all services to a DCB
|
|
*
|
|
* Designed to be called within a CLI command in order
|
|
* to display all active services within the gateway
|
|
*/
|
|
void
|
|
dprintAllServices(DCB *dcb)
|
|
{
|
|
SERVICE *ptr;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
ptr = allServices;
|
|
while (ptr)
|
|
{
|
|
dprintService(dcb, ptr);
|
|
ptr = ptr->next;
|
|
}
|
|
spinlock_release(&service_spin);
|
|
}
|
|
|
|
/**
|
|
* Print details of a single service.
|
|
*
|
|
* @param dcb DCB to print data to
|
|
* @param service The service to print
|
|
*/
|
|
void dprintService(DCB *dcb, SERVICE *service)
|
|
{
|
|
SERVER_REF *server = service->dbref;
|
|
struct tm result;
|
|
char timebuf[30];
|
|
int i;
|
|
|
|
dcb_printf(dcb, "Service %p\n", service);
|
|
dcb_printf(dcb, "\tService: %s\n",
|
|
service->name);
|
|
dcb_printf(dcb, "\tRouter: %s (%p)\n",
|
|
service->routerModule, service->router);
|
|
switch (service->state)
|
|
{
|
|
case SERVICE_STATE_STARTED:
|
|
dcb_printf(dcb, "\tState: Started\n");
|
|
break;
|
|
case SERVICE_STATE_STOPPED:
|
|
dcb_printf(dcb, "\tState: Stopped\n");
|
|
break;
|
|
case SERVICE_STATE_FAILED:
|
|
dcb_printf(dcb, "\tState: Failed\n");
|
|
break;
|
|
case SERVICE_STATE_ALLOC:
|
|
dcb_printf(dcb, "\tState: Allocated\n");
|
|
break;
|
|
}
|
|
if (service->router && service->router_instance)
|
|
{
|
|
service->router->diagnostics(service->router_instance, dcb);
|
|
}
|
|
dcb_printf(dcb, "\tStarted: %s",
|
|
asctime_r(localtime_r(&service->stats.started, &result), timebuf));
|
|
dcb_printf(dcb, "\tRoot user access: %s\n",
|
|
service->enable_root ? "Enabled" : "Disabled");
|
|
if (service->n_filters)
|
|
{
|
|
dcb_printf(dcb, "\tFilter chain: ");
|
|
for (i = 0; i < service->n_filters; i++)
|
|
{
|
|
dcb_printf(dcb, "%s %s ", service->filters[i]->name,
|
|
i + 1 < service->n_filters ? "|" : "");
|
|
}
|
|
dcb_printf(dcb, "\n");
|
|
}
|
|
dcb_printf(dcb, "\tBackend databases:\n");
|
|
while (server)
|
|
{
|
|
dcb_printf(dcb, "\t\t%s:%d Protocol: %s\n", server->server->name, server->server->port,
|
|
server->server->protocol);
|
|
server = server->next;
|
|
}
|
|
if (service->weightby)
|
|
{
|
|
dcb_printf(dcb, "\tRouting weight parameter: %s\n",
|
|
service->weightby);
|
|
}
|
|
dcb_printf(dcb, "\tUsers data: %p\n",
|
|
service->users);
|
|
dcb_printf(dcb, "\tTotal connections: %d\n",
|
|
service->stats.n_sessions);
|
|
dcb_printf(dcb, "\tCurrently connected: %d\n",
|
|
service->stats.n_current);
|
|
}
|
|
|
|
/**
|
|
* List the defined services in a tabular format.
|
|
*
|
|
* @param dcb DCB to print the service list to.
|
|
*/
|
|
void
|
|
dListServices(DCB *dcb)
|
|
{
|
|
SERVICE *service;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
service = allServices;
|
|
if (service)
|
|
{
|
|
dcb_printf(dcb, "Services.\n");
|
|
dcb_printf(dcb, "--------------------------+----------------------+--------+---------------\n");
|
|
dcb_printf(dcb, "%-25s | %-20s | #Users | Total Sessions\n",
|
|
"Service Name", "Router Module");
|
|
dcb_printf(dcb, "--------------------------+----------------------+--------+---------------\n");
|
|
}
|
|
while (service)
|
|
{
|
|
ss_dassert(service->stats.n_current >= 0);
|
|
dcb_printf(dcb, "%-25s | %-20s | %6d | %5d\n",
|
|
service->name, service->routerModule,
|
|
service->stats.n_current, service->stats.n_sessions);
|
|
service = service->next;
|
|
}
|
|
if (allServices)
|
|
{
|
|
dcb_printf(dcb, "--------------------------+----------------------+--------+---------------\n\n");
|
|
}
|
|
spinlock_release(&service_spin);
|
|
}
|
|
|
|
/**
|
|
* List the defined listeners in a tabular format.
|
|
*
|
|
* @param dcb DCB to print the service list to.
|
|
*/
|
|
void
|
|
dListListeners(DCB *dcb)
|
|
{
|
|
SERVICE *service;
|
|
SERV_LISTENER *lptr;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
service = allServices;
|
|
if (service)
|
|
{
|
|
dcb_printf(dcb, "Listeners.\n");
|
|
dcb_printf(dcb, "---------------------+--------------------+-----------------+-------+--------\n");
|
|
dcb_printf(dcb, "%-20s | %-18s | %-15s | Port | State\n",
|
|
"Service Name", "Protocol Module", "Address");
|
|
dcb_printf(dcb, "---------------------+--------------------+-----------------+-------+--------\n");
|
|
}
|
|
while (service)
|
|
{
|
|
lptr = service->ports;
|
|
while (lptr)
|
|
{
|
|
dcb_printf(dcb, "%-20s | %-18s | %-15s | %5d | %s\n",
|
|
service->name, lptr->protocol,
|
|
(lptr && lptr->address) ? lptr->address : "*",
|
|
lptr->port,
|
|
(!lptr->listener ||
|
|
!lptr->listener->session ||
|
|
lptr->listener->session->state == SESSION_STATE_LISTENER_STOPPED) ?
|
|
"Stopped" : "Running");
|
|
|
|
lptr = lptr->next;
|
|
}
|
|
service = service->next;
|
|
}
|
|
if (allServices)
|
|
{
|
|
dcb_printf(dcb, "---------------------+--------------------+-----------------+-------+--------\n\n");
|
|
}
|
|
spinlock_release(&service_spin);
|
|
}
|
|
|
|
/**
|
|
* Update the definition of a service
|
|
*
|
|
* @param service The service to update
|
|
* @param router The router module to use
|
|
* @param user The user to use to extract information from the database
|
|
* @param auth The password for the user above
|
|
*/
|
|
void
|
|
service_update(SERVICE *service, char *router, char *user, char *auth)
|
|
{
|
|
void *router_obj;
|
|
|
|
if (!strcmp(service->routerModule, router))
|
|
{
|
|
if ((router_obj = load_module(router, MODULE_ROUTER)) == NULL)
|
|
{
|
|
MXS_ERROR("Failed to update router "
|
|
"for service %s to %s.",
|
|
service->name,
|
|
router);
|
|
}
|
|
else
|
|
{
|
|
MXS_NOTICE("Update router for service %s to %s.",
|
|
service->name,
|
|
router);
|
|
free(service->routerModule);
|
|
service->routerModule = strdup(router);
|
|
service->router = router_obj;
|
|
}
|
|
}
|
|
if (user &&
|
|
(strcmp(service->credentials.name, user) != 0 ||
|
|
strcmp(service->credentials.authdata, auth) != 0))
|
|
{
|
|
MXS_NOTICE("Update credentials for service %s.", service->name);
|
|
serviceSetUser(service, user, auth);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Refresh the database users for the service
|
|
* This function replaces the MySQL users used by the service with the latest
|
|
* version found on the backend servers. There is a limit on how often the users
|
|
* can be reloaded and if this limit is exceeded, the reload will fail.
|
|
* @param service Service to reload
|
|
* @return 0 on success and 1 on error
|
|
*/
|
|
int service_refresh_users(SERVICE *service)
|
|
{
|
|
int ret = 1;
|
|
/* check for another running getUsers request */
|
|
if (!spinlock_acquire_nowait(&service->users_table_spin))
|
|
{
|
|
MXS_DEBUG("%s: [service_refresh_users] failed to get get lock for "
|
|
"loading new users' table: another thread is loading users",
|
|
service->name);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* check if refresh rate limit has exceeded */
|
|
if ((time(NULL) < (service->rate_limit.last + USERS_REFRESH_TIME)) ||
|
|
(service->rate_limit.nloads > USERS_REFRESH_MAX_PER_TIME))
|
|
{
|
|
spinlock_release(&service->users_table_spin);
|
|
MXS_ERROR("%s: Refresh rate limit exceeded for load of users' table.",
|
|
service->name);
|
|
|
|
return 1;
|
|
}
|
|
|
|
service->rate_limit.nloads++;
|
|
|
|
/* update time and counter */
|
|
if (service->rate_limit.nloads > USERS_REFRESH_MAX_PER_TIME)
|
|
{
|
|
service->rate_limit.nloads = 1;
|
|
service->rate_limit.last = time(NULL);
|
|
}
|
|
|
|
ret = replace_mysql_users(service);
|
|
|
|
/* remove lock */
|
|
spinlock_release(&service->users_table_spin);
|
|
|
|
if (ret >= 0)
|
|
{
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
bool service_set_param_value(SERVICE* service,
|
|
CONFIG_PARAMETER* param,
|
|
char* valstr,
|
|
count_spec_t count_spec,
|
|
config_param_type_t type)
|
|
{
|
|
char* p;
|
|
int valint;
|
|
bool valbool;
|
|
target_t valtarget;
|
|
bool succp = true;
|
|
|
|
if (PARAM_IS_TYPE(type, PERCENT_TYPE) || PARAM_IS_TYPE(type, COUNT_TYPE))
|
|
{
|
|
/**
|
|
* Find out whether the value is numeric and ends with '%' or '\0'
|
|
*/
|
|
p = valstr;
|
|
|
|
while (isdigit(*p))
|
|
{
|
|
p++;
|
|
}
|
|
|
|
errno = 0;
|
|
|
|
if (p == valstr || (*p != '%' && *p != '\0'))
|
|
{
|
|
succp = false;
|
|
}
|
|
else if (*p == '%')
|
|
{
|
|
if (*(p + 1) == '\0')
|
|
{
|
|
*p = '\0';
|
|
valint = (int) strtol(valstr, (char **)NULL, 10);
|
|
|
|
if (valint == 0 && errno != 0)
|
|
{
|
|
succp = false;
|
|
}
|
|
else if (PARAM_IS_TYPE(type, PERCENT_TYPE))
|
|
{
|
|
succp = true;
|
|
config_set_qualified_param(param, (void *)&valint, PERCENT_TYPE);
|
|
}
|
|
else
|
|
{
|
|
/** Log error */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
succp = false;
|
|
}
|
|
}
|
|
else if (*p == '\0')
|
|
{
|
|
valint = (int) strtol(valstr, (char **)NULL, 10);
|
|
|
|
if (valint == 0 && errno != 0)
|
|
{
|
|
succp = false;
|
|
}
|
|
else if (PARAM_IS_TYPE(type, COUNT_TYPE))
|
|
{
|
|
succp = true;
|
|
config_set_qualified_param(param, (void *)&valint, COUNT_TYPE);
|
|
}
|
|
else
|
|
{
|
|
/** Log error */
|
|
}
|
|
}
|
|
}
|
|
else if (type == BOOL_TYPE)
|
|
{
|
|
unsigned int rc;
|
|
|
|
rc = find_type(&bool_type, valstr, strlen(valstr) + 1);
|
|
|
|
if (rc > 0)
|
|
{
|
|
succp = true;
|
|
if (rc % 2 == 1)
|
|
{
|
|
valbool = false;
|
|
}
|
|
else if (rc % 2 == 0)
|
|
{
|
|
valbool = true;
|
|
}
|
|
/** add param to config */
|
|
config_set_qualified_param(param, (void *)&valbool, BOOL_TYPE);
|
|
}
|
|
else
|
|
{
|
|
succp = false;
|
|
}
|
|
}
|
|
else if (type == SQLVAR_TARGET_TYPE)
|
|
{
|
|
unsigned int rc;
|
|
|
|
rc = find_type(&sqlvar_target_type, valstr, strlen(valstr) + 1);
|
|
|
|
if (rc > 0 && rc < 3)
|
|
{
|
|
succp = true;
|
|
if (rc == 1)
|
|
{
|
|
valtarget = TYPE_MASTER;
|
|
}
|
|
else if (rc == 2)
|
|
{
|
|
valtarget = TYPE_ALL;
|
|
}
|
|
/** add param to config */
|
|
config_set_qualified_param(param, (void *)&valtarget, SQLVAR_TARGET_TYPE);
|
|
}
|
|
else
|
|
{
|
|
succp = false;
|
|
}
|
|
}
|
|
|
|
if (succp)
|
|
{
|
|
service_add_qualified_param(service, param); /*< add param to svc */
|
|
}
|
|
return succp;
|
|
}
|
|
/*
|
|
* Function to find a string in typelib_t
|
|
* (similar to find_type() of mysys/typelib.c)
|
|
*
|
|
* SYNOPSIS
|
|
* find_type()
|
|
* lib typelib_t
|
|
* find String to find
|
|
* length Length of string to find
|
|
* part_match Allow part matching of value
|
|
*
|
|
* RETURN
|
|
* 0 error
|
|
* > 0 position in TYPELIB->type_names +1
|
|
*/
|
|
static int find_type(typelib_t* tl,
|
|
const char* needle,
|
|
int maxlen)
|
|
{
|
|
int i;
|
|
|
|
if (tl == NULL || needle == NULL || maxlen <= 0)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
for (i = 0; i < tl->tl_nelems; i++)
|
|
{
|
|
if (strncasecmp(tl->tl_p_elems[i], needle, maxlen) == 0)
|
|
{
|
|
return i + 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Add qualified config parameter to SERVICE struct.
|
|
*/
|
|
static void service_add_qualified_param(SERVICE* svc,
|
|
CONFIG_PARAMETER* param)
|
|
{
|
|
spinlock_acquire(&svc->spin);
|
|
|
|
if (svc->svc_config_param == NULL)
|
|
{
|
|
svc->svc_config_param = config_clone_param(param);
|
|
svc->svc_config_param->next = NULL;
|
|
}
|
|
else
|
|
{
|
|
CONFIG_PARAMETER* p = svc->svc_config_param;
|
|
CONFIG_PARAMETER* prev = NULL;
|
|
|
|
while (true)
|
|
{
|
|
CONFIG_PARAMETER* old;
|
|
|
|
/** Replace existing parameter in the list, free old */
|
|
if (strncasecmp(param->name,
|
|
p->name,
|
|
strlen(param->name)) == 0)
|
|
{
|
|
old = p;
|
|
p = config_clone_param(param);
|
|
p->next = old->next;
|
|
|
|
if (prev != NULL)
|
|
{
|
|
prev->next = p;
|
|
}
|
|
else
|
|
{
|
|
svc->svc_config_param = p;
|
|
}
|
|
free(old);
|
|
break;
|
|
}
|
|
prev = p;
|
|
p = p->next;
|
|
|
|
/** Hit end of the list, add new parameter */
|
|
if (p == NULL)
|
|
{
|
|
p = config_clone_param(param);
|
|
prev->next = p;
|
|
p->next = NULL;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
/** Increment service's configuration version */
|
|
atomic_add(&svc->svc_config_version, 1);
|
|
spinlock_release(&svc->spin);
|
|
}
|
|
|
|
/**
|
|
* Return the name of the service
|
|
*
|
|
* @param svc The service
|
|
*/
|
|
char *
|
|
service_get_name(SERVICE *svc)
|
|
{
|
|
return svc->name;
|
|
}
|
|
|
|
/**
|
|
* Set the weighting parameter for the service
|
|
*
|
|
* @param service The service pointer
|
|
* @param weightby The parameter name to weight the routing by
|
|
*/
|
|
void
|
|
serviceWeightBy(SERVICE *service, char *weightby)
|
|
{
|
|
if (service->weightby)
|
|
{
|
|
free(service->weightby);
|
|
}
|
|
service->weightby = strdup(weightby);
|
|
}
|
|
|
|
/**
|
|
* Return the parameter the wervice shoudl use to weight connections
|
|
* by
|
|
* @param service The Service pointer
|
|
*/
|
|
char *
|
|
serviceGetWeightingParameter(SERVICE *service)
|
|
{
|
|
return service->weightby;
|
|
}
|
|
|
|
/**
|
|
* Enable/Disable localhost authentication match criteria
|
|
* associated with this service.
|
|
*
|
|
* @param service The service we are setting the data for
|
|
* @param action 1 for enable, 0 for disable access
|
|
* @return 0 on failure
|
|
*/
|
|
|
|
int
|
|
serviceEnableLocalhostMatchWildcardHost(SERVICE *service, int action)
|
|
{
|
|
if (action != 0 && action != 1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
service->localhost_match_wildcard_host = action;
|
|
|
|
return 1;
|
|
}
|
|
|
|
void service_shutdown()
|
|
{
|
|
SERVICE* svc;
|
|
spinlock_acquire(&service_spin);
|
|
svc = allServices;
|
|
while (svc != NULL)
|
|
{
|
|
svc->svc_do_shutdown = true;
|
|
svc = svc->next;
|
|
}
|
|
spinlock_release(&service_spin);
|
|
}
|
|
|
|
/**
|
|
* Return the count of all sessions active for all services
|
|
*
|
|
* @return Count of all active sessions
|
|
*/
|
|
int
|
|
serviceSessionCountAll()
|
|
{
|
|
SERVICE *service;
|
|
int rval = 0;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
service = allServices;
|
|
while (service)
|
|
{
|
|
rval += service->stats.n_current;
|
|
service = service->next;
|
|
}
|
|
spinlock_release(&service_spin);
|
|
return rval;
|
|
}
|
|
|
|
/**
|
|
* Provide a row to the result set that defines the set of service
|
|
* listeners
|
|
*
|
|
* @param set The result set
|
|
* @param data The index of the row to send
|
|
* @return The next row or NULL
|
|
*/
|
|
static RESULT_ROW *
|
|
serviceListenerRowCallback(RESULTSET *set, void *data)
|
|
{
|
|
int *rowno = (int *)data;
|
|
int i = 0;;
|
|
char buf[20];
|
|
RESULT_ROW *row;
|
|
SERVICE *service;
|
|
SERV_LISTENER *lptr = NULL;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
service = allServices;
|
|
if (service)
|
|
{
|
|
lptr = service->ports;
|
|
}
|
|
while (i < *rowno && service)
|
|
{
|
|
lptr = service->ports;
|
|
while (i < *rowno && lptr)
|
|
{
|
|
if ((lptr = lptr->next) != NULL)
|
|
{
|
|
i++;
|
|
}
|
|
}
|
|
if (i < *rowno)
|
|
{
|
|
service = service->next;
|
|
if (service && (lptr = service->ports) != NULL)
|
|
{
|
|
i++;
|
|
}
|
|
}
|
|
}
|
|
if (lptr == NULL)
|
|
{
|
|
spinlock_release(&service_spin);
|
|
free(data);
|
|
return NULL;
|
|
}
|
|
(*rowno)++;
|
|
row = resultset_make_row(set);
|
|
resultset_row_set(row, 0, service->name);
|
|
resultset_row_set(row, 1, lptr->protocol);
|
|
resultset_row_set(row, 2, (lptr && lptr->address) ? lptr->address : "*");
|
|
sprintf(buf, "%d", lptr->port);
|
|
resultset_row_set(row, 3, buf);
|
|
resultset_row_set(row, 4,
|
|
(!lptr->listener || !lptr->listener->session ||
|
|
lptr->listener->session->state == SESSION_STATE_LISTENER_STOPPED) ?
|
|
"Stopped" : "Running");
|
|
spinlock_release(&service_spin);
|
|
return row;
|
|
}
|
|
|
|
/**
|
|
* Return a resultset that has the current set of services in it
|
|
*
|
|
* @return A Result set
|
|
*/
|
|
RESULTSET *
|
|
serviceGetListenerList()
|
|
{
|
|
RESULTSET *set;
|
|
int *data;
|
|
|
|
if ((data = (int *)malloc(sizeof(int))) == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
*data = 0;
|
|
if ((set = resultset_create(serviceListenerRowCallback, data)) == NULL)
|
|
{
|
|
free(data);
|
|
return NULL;
|
|
}
|
|
resultset_add_column(set, "Service Name", 25, COL_TYPE_VARCHAR);
|
|
resultset_add_column(set, "Protocol Module", 20, COL_TYPE_VARCHAR);
|
|
resultset_add_column(set, "Address", 15, COL_TYPE_VARCHAR);
|
|
resultset_add_column(set, "Port", 5, COL_TYPE_VARCHAR);
|
|
resultset_add_column(set, "State", 8, COL_TYPE_VARCHAR);
|
|
|
|
return set;
|
|
}
|
|
|
|
/**
|
|
* Provide a row to the result set that defines the set of services
|
|
*
|
|
* @param set The result set
|
|
* @param data The index of the row to send
|
|
* @return The next row or NULL
|
|
*/
|
|
static RESULT_ROW *
|
|
serviceRowCallback(RESULTSET *set, void *data)
|
|
{
|
|
int *rowno = (int *)data;
|
|
int i = 0;
|
|
char buf[20];
|
|
RESULT_ROW *row;
|
|
SERVICE *service;
|
|
|
|
spinlock_acquire(&service_spin);
|
|
service = allServices;
|
|
while (i < *rowno && service)
|
|
{
|
|
i++;
|
|
service = service->next;
|
|
}
|
|
if (service == NULL)
|
|
{
|
|
spinlock_release(&service_spin);
|
|
free(data);
|
|
return NULL;
|
|
}
|
|
(*rowno)++;
|
|
row = resultset_make_row(set);
|
|
resultset_row_set(row, 0, service->name);
|
|
resultset_row_set(row, 1, service->routerModule);
|
|
sprintf(buf, "%d", service->stats.n_current);
|
|
resultset_row_set(row, 2, buf);
|
|
sprintf(buf, "%d", service->stats.n_sessions);
|
|
resultset_row_set(row, 3, buf);
|
|
spinlock_release(&service_spin);
|
|
return row;
|
|
}
|
|
|
|
/**
|
|
* Return a result set that has the current set of services in it
|
|
*
|
|
* @return A Result set
|
|
*/
|
|
RESULTSET *
|
|
serviceGetList()
|
|
{
|
|
RESULTSET *set;
|
|
int *data;
|
|
|
|
if ((data = (int *)malloc(sizeof(int))) == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
*data = 0;
|
|
if ((set = resultset_create(serviceRowCallback, data)) == NULL)
|
|
{
|
|
free(data);
|
|
return NULL;
|
|
}
|
|
resultset_add_column(set, "Service Name", 25, COL_TYPE_VARCHAR);
|
|
resultset_add_column(set, "Router Module", 20, COL_TYPE_VARCHAR);
|
|
resultset_add_column(set, "No. Sessions", 10, COL_TYPE_VARCHAR);
|
|
resultset_add_column(set, "Total Sessions", 10, COL_TYPE_VARCHAR);
|
|
|
|
return set;
|
|
}
|
|
|
|
/**
|
|
* Function called by the housekeeper thread to retry starting of a service
|
|
* @param data Service to restart
|
|
*/
|
|
static void service_internal_restart(void *data)
|
|
{
|
|
SERVICE* service = (SERVICE*)data;
|
|
serviceStartAllPorts(service);
|
|
}
|
|
|
|
/**
|
|
* Check that all services have listeners
|
|
* @return True if all services have listeners
|
|
*/
|
|
bool service_all_services_have_listeners()
|
|
{
|
|
bool rval = true;
|
|
spinlock_acquire(&service_spin);
|
|
|
|
SERVICE* service = allServices;
|
|
|
|
while (service)
|
|
{
|
|
if (service->ports == NULL)
|
|
{
|
|
MXS_ERROR("Service '%s' has no listeners.", service->name);
|
|
rval = false;
|
|
}
|
|
service = service->next;
|
|
}
|
|
|
|
spinlock_release(&service_spin);
|
|
return rval;
|
|
}
|