48791c3877
The service parameter list had two router entries in it due to the assumption that the parameter list never contained the router itself in it.
2426 lines
66 KiB
C++
2426 lines
66 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/bsl11.
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*
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* Change Date: 2022-01-01
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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 a service within MaxScale
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*/
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#include <maxscale/ccdefs.hh>
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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 <sys/stat.h>
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#include <sys/types.h>
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#include <math.h>
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#include <fcntl.h>
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#include <atomic>
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#include <map>
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#include <string>
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#include <set>
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#include <vector>
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#include <unordered_set>
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#include <maxbase/atomic.hh>
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#include <maxbase/jansson.h>
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#include <maxscale/service.h>
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#include <maxscale/alloc.h>
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#include <maxscale/dcb.h>
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#include <maxscale/paths.h>
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#include <maxscale/housekeeper.h>
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#include <maxscale/listener.h>
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#include <maxscale/log.h>
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#include <maxscale/poll.h>
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#include <maxscale/protocol.h>
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#include <maxscale/resultset.hh>
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#include <maxscale/router.h>
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#include <maxscale/server.h>
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#include <maxscale/session.h>
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#include <maxscale/users.h>
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#include <maxscale/utils.h>
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#include <maxscale/utils.hh>
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#include <maxscale/version.h>
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#include <maxscale/json_api.h>
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#include <maxscale/routingworker.h>
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#include <maxscale/routingworker.hh>
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#include "internal/config.hh"
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#include "internal/filter.hh"
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#include "internal/modules.h"
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#include "internal/service.hh"
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#include "internal/maxscale.h"
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/** This define is needed in CentOS 6 systems */
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#if !defined (UINT64_MAX)
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#define UINT64_MAX (18446744073709551615UL)
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#endif
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using std::string;
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using std::set;
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using namespace maxscale;
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using LockGuard = std::lock_guard<std::mutex>;
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using UniqueLock = std::unique_lock<std::mutex>;
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static struct
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{
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std::mutex lock;
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std::vector<Service*> services;
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} this_unit;
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static bool service_internal_restart(void* data);
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static void service_calculate_weights(SERVICE* service);
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Service* service_alloc(const char* name, const char* router, MXS_CONFIG_PARAMETER* params)
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{
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MXS_ROUTER_OBJECT* router_api = (MXS_ROUTER_OBJECT*)load_module(router, MODULE_ROUTER);
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if (router_api == NULL)
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{
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MXS_ERROR("Unable to load router module '%s'", router);
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return NULL;
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}
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Service* service = new(std::nothrow) Service(name, router, params);
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if (service == nullptr)
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{
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MXS_OOM();
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return NULL;
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}
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if (service->conn_idle_timeout)
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{
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dcb_enable_session_timeouts();
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}
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// Store parameters in the service
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service_add_parameters(service, params);
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// Store router, used when service is serialized
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service_replace_parameter(service, CN_ROUTER, router);
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service->router_instance = router_api->createInstance(service, params);
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if (service->router_instance == NULL)
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{
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MXS_ERROR("%s: Failed to create router instance. Service not started.", service->name);
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service->active = false;
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delete service;
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return NULL;
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}
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if (router_api->getCapabilities)
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{
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service->capabilities |= router_api->getCapabilities(service->router_instance);
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}
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LockGuard guard(this_unit.lock);
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this_unit.services.push_back(service);
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return service;
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}
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static std::string get_version_string(MXS_CONFIG_PARAMETER* params)
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{
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std::string version_string = config_get_string(params, CN_VERSION_STRING);
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if (!version_string.empty() && version_string[0] != '5')
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{
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/**
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* Add the 5.5.5- string to the start of the version string if the version
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* string starts with "10.". This mimics MariaDB 10.0 which adds 5.5.5-
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* for backwards compatibility.
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*/
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version_string = "5.5.5-" + version_string;
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}
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return version_string;
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}
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Service::Service(const std::string& service_name,
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const std::string& router_name,
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MXS_CONFIG_PARAMETER* params)
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: m_name(service_name)
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, m_router_name(router_name)
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, m_user(config_get_string(params, CN_USER))
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, m_password(config_get_string(params, CN_PASSWORD))
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, m_weightby(config_get_string(params, CN_WEIGHTBY))
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, m_version_string(get_version_string(params))
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, m_rate_limits(config_threadcount())
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, m_wkey(mxs_rworker_create_key())
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{
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const MXS_MODULE* module = get_module(router_name.c_str(), MODULE_ROUTER);
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mxb_assert(module);
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mxb_assert(load_module(router_name.c_str(), MODULE_ROUTER) == module->module_object);
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router = (MXS_ROUTER_OBJECT*)module->module_object;
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capabilities = module->module_capabilities;
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client_count = 0;
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n_dbref = 0;
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// TODO: Remove once the name and router module are not directly visible to modules
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name = m_name.c_str();
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routerModule = m_router_name.c_str();
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svc_config_param = NULL;
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svc_config_version = 0;
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stats.started = time(0);
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stats.n_failed_starts = 0;
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stats.n_current = 0;
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stats.n_sessions = 0;
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state = SERVICE_STATE_ALLOC;
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active = true;
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ports = NULL;
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dbref = NULL;
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n_dbref = 0;
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snprintf(user, sizeof(user), "%s", m_user.c_str());
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snprintf(password, sizeof(password), "%s", m_password.c_str());
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snprintf(weightby, sizeof(weightby), "%s", m_weightby.c_str());
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snprintf(version_string, sizeof(version_string), "%s", m_version_string.c_str());
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max_retry_interval = config_get_integer(params, CN_MAX_RETRY_INTERVAL);
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users_from_all = config_get_bool(params, CN_AUTH_ALL_SERVERS);
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localhost_match_wildcard_host = config_get_bool(params, CN_LOCALHOST_MATCH_WILDCARD_HOST);
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retry_start = config_get_bool(params, CN_RETRY_ON_FAILURE);
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enable_root = config_get_bool(params, CN_ENABLE_ROOT_USER);
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conn_idle_timeout = config_get_integer(params, CN_CONNECTION_TIMEOUT);
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max_connections = config_get_integer(params, CN_MAX_CONNECTIONS);
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log_auth_warnings = config_get_bool(params, CN_LOG_AUTH_WARNINGS);
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strip_db_esc = config_get_bool(params, CN_STRIP_DB_ESC);
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session_track_trx_state = config_get_bool(params, CN_SESSION_TRACK_TRX_STATE);
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retain_last_statements = config_get_integer(params, CN_RETAIN_LAST_STATEMENTS);
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/**
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* At service start last update is set to config->users_refresh_time seconds earlier.
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* This way MaxScale could try reloading users just after startup. But only if user
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* refreshing has not been turned off.
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*/
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MXS_CONFIG* cnf = config_get_global_options();
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// Defaults for disabled reloading of users
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bool warned = true;
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bool last = time(NULL);
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if (cnf->users_refresh_time != INT32_MAX)
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{
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last -= cnf->users_refresh_time;
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warned = false;
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}
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for (auto& a : m_rate_limits)
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{
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a.last = last;
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a.warned = warned;
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}
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}
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Service::~Service()
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{
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mxs_rworker_delete_data(m_wkey);
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while (auto tmp = ports)
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{
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ports = ports->next;
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mxb_assert(!tmp->active || maxscale_teardown_in_progress());
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listener_free(tmp);
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}
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if (router && router_instance && router->destroyInstance)
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{
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router->destroyInstance(router_instance);
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}
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while (SERVER_REF* tmp = dbref)
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{
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mxb_assert(!tmp->active || maxscale_teardown_in_progress());
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dbref = dbref->next;
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MXS_FREE(tmp);
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}
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config_parameter_free(svc_config_param);
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}
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void service_free(Service* service)
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{
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mxb_assert(mxb::atomic::load(&service->client_count) == 0 || maxscale_teardown_in_progress());
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mxb_assert(!service->active || maxscale_teardown_in_progress());
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{
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LockGuard guard(this_unit.lock);
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auto it = std::remove(this_unit.services.begin(), this_unit.services.end(), service);
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mxb_assert(it != this_unit.services.end());
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this_unit.services.erase(it);
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}
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delete service;
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}
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void service_destroy(Service* service)
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{
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#ifdef SS_DEBUG
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auto current = mxs::RoutingWorker::get_current();
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auto main = mxs::RoutingWorker::get(mxs::RoutingWorker::MAIN);
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mxb_assert_message(current == main, "Destruction of service must be done on the main worker");
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#endif
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mxb_assert(service->active);
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atomic_store_int(&service->active, false);
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char filename[PATH_MAX + 1];
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snprintf(filename,
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sizeof(filename),
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"%s/%s.cnf",
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get_config_persistdir(),
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service->name);
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if (unlink(filename) == -1 && errno != ENOENT)
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{
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MXS_ERROR("Failed to remove persisted service configuration at '%s': %d, %s",
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filename,
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errno,
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mxs_strerror(errno));
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}
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if (mxb::atomic::load(&service->client_count) == 0)
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{
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// The service has no active sessions, it can be closed immediately
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service_free(service);
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}
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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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bool service_isvalid(Service* service)
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{
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LockGuard guard(this_unit.lock);
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return std::find(this_unit.services.begin(),
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this_unit.services.end(),
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service) != this_unit.services.end();
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}
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static inline void close_port(SERV_LISTENER* port)
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{
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if (port->service->state == SERVICE_STATE_ALLOC)
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{
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/** The service failed when it was being allocated */
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port->service->state = SERVICE_STATE_FAILED;
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}
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if (port->listener)
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{
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dcb_close(port->listener);
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port->listener = NULL;
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}
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listener_set_active(port, false);
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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 serviceStartPort(Service* service, SERV_LISTENER* port)
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{
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const size_t ANY_IPV4_ADDRESS_LEN = 7; // strlen("0:0:0:0");
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int listeners = 0;
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size_t config_bind_len =
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(port->address ? strlen(port->address) : ANY_IPV4_ADDRESS_LEN) + 1 + UINTLEN(port->port);
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char config_bind[config_bind_len + 1]; // +1 for NULL
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MXS_PROTOCOL* 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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close_port(port);
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mxb_assert(false);
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return 0;
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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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close_port(port);
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return 0;
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}
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port->listener->service = service;
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if ((funcs = (MXS_PROTOCOL*)load_module(port->protocol, MODULE_PROTOCOL)) == NULL)
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{
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MXS_ERROR("Unable to load protocol module %s. Listener for service %s not started.",
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port->protocol,
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service->name);
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close_port(port);
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return 0;
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}
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memcpy(&(port->listener->func), funcs, sizeof(MXS_PROTOCOL));
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const char* authenticator_name = "NullAuthDeny";
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if (port->authenticator)
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{
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authenticator_name = port->authenticator;
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}
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else if (port->listener->func.auth_default)
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{
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authenticator_name = port->listener->func.auth_default();
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}
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MXS_AUTHENTICATOR* authfuncs = (MXS_AUTHENTICATOR*)load_module(authenticator_name, MODULE_AUTHENTICATOR);
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if (authfuncs == NULL)
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{
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MXS_ERROR("Failed to load authenticator module '%s' for listener '%s'",
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authenticator_name,
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port->name);
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close_port(port);
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return 0;
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}
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// Add protocol and authenticator capabilities from the listener
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const MXS_MODULE* proto_mod = get_module(port->protocol, MODULE_PROTOCOL);
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const MXS_MODULE* auth_mod = get_module(authenticator_name, MODULE_AUTHENTICATOR);
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mxb_assert(proto_mod && auth_mod);
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service->capabilities |= proto_mod->module_capabilities | auth_mod->module_capabilities;
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memcpy(&port->listener->authfunc, authfuncs, sizeof(MXS_AUTHENTICATOR));
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/**
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* Normally, we'd allocate the DCB specific authentication data. As the
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* listeners aren't normal DCBs, we can skip that.
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*/
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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, "::|%d", port->port);
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}
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/** Load the authentication users before before starting the listener */
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if (port->listener->authfunc.loadusers)
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{
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switch (port->listener->authfunc.loadusers(port))
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{
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case MXS_AUTH_LOADUSERS_FATAL:
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MXS_ERROR("[%s] Fatal error when loading users for listener '%s', "
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"service is not started.",
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service->name,
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port->name);
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close_port(port);
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return 0;
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case MXS_AUTH_LOADUSERS_ERROR:
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MXS_WARNING("[%s] Failed to load users for listener '%s', authentication"
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" might not work.",
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service->name,
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port->name);
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break;
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default:
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break;
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}
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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("[%s] Failed to create listener session.", service->name);
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close_port(port);
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}
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}
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else
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{
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MXS_ERROR("[%s] Failed to listen on %s", service->name, config_bind);
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close_port(port);
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}
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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 (!maxscale_is_shutting_down() && 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 (service->state == SERVICE_STATE_FAILED)
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{
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listeners = 0;
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}
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else 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 = MXS_MIN(service->stats.n_failed_starts * 10, service->max_retry_interval);
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snprintf(taskname,
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sizeof(taskname),
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"%s_start_retry_%d",
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service->name,
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service->stats.n_failed_starts);
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hktask_add(taskname, service_internal_restart, service, retry_after);
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MXS_NOTICE("Failed to start service %s, retrying in %d seconds.",
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service->name,
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retry_after);
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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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{
|
|
MXS_WARNING("Service '%s' has no listeners defined.", service->name);
|
|
listeners = 1; /** Set this to one to suppress errors */
|
|
}
|
|
|
|
return listeners;
|
|
}
|
|
|
|
/**
|
|
* Start a service
|
|
*
|
|
* This function loads the protocol modules for each port on which the
|
|
* service listens and starts the listener on that port
|
|
*
|
|
* @param service The Service that should be started
|
|
*
|
|
* @return Returns the number of listeners created
|
|
*/
|
|
int serviceInitialize(Service* service)
|
|
{
|
|
/** Calculate the server weights */
|
|
service_calculate_weights(service);
|
|
|
|
int listeners = 0;
|
|
|
|
if (!config_get_global_options()->config_check)
|
|
{
|
|
listeners = serviceStartAllPorts(service);
|
|
}
|
|
else
|
|
{
|
|
/** We're only checking that the configuration is valid */
|
|
listeners++;
|
|
}
|
|
|
|
return listeners;
|
|
}
|
|
|
|
bool serviceLaunchListener(Service* service, SERV_LISTENER* port)
|
|
{
|
|
mxb_assert(service->state != SERVICE_STATE_FAILED);
|
|
bool rval = true;
|
|
LockGuard guard(service->lock);
|
|
|
|
if (serviceStartPort(service, port) == 0)
|
|
{
|
|
/** Failed to start the listener */
|
|
rval = false;
|
|
}
|
|
|
|
|
|
return rval;
|
|
}
|
|
|
|
bool serviceStopListener(SERVICE* svc, const char* name)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
bool rval = false;
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener) && strcmp(listener->name, name) == 0)
|
|
{
|
|
if (poll_remove_dcb(listener->listener) == 0)
|
|
{
|
|
listener->listener->session->state = SESSION_STATE_LISTENER_STOPPED;
|
|
rval = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
bool serviceStartListener(SERVICE* svc, const char* name)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
bool rval = false;
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener) && strcmp(listener->name, name) == 0)
|
|
{
|
|
if (listener->listener && listener->listener->session->state == SESSION_STATE_LISTENER_STOPPED
|
|
&& poll_add_dcb(listener->listener) == 0)
|
|
{
|
|
listener->listener->session->state = SESSION_STATE_LISTENER;
|
|
rval = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
int service_launch_all()
|
|
{
|
|
int n = 0, i;
|
|
bool error = false;
|
|
int num_svc = this_unit.services.size();
|
|
|
|
MXS_NOTICE("Starting a total of %d services...", num_svc);
|
|
|
|
int curr_svc = 1;
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
n += (i = serviceInitialize(service));
|
|
MXS_NOTICE("Service '%s' started (%d/%d)", service->name, curr_svc++, num_svc);
|
|
|
|
if (i == 0)
|
|
{
|
|
MXS_ERROR("Failed to start service '%s'.", service->name);
|
|
error = true;
|
|
}
|
|
|
|
if (maxscale_is_shutting_down())
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
return error ? -1 : n;
|
|
}
|
|
|
|
bool serviceStop(SERVICE* service)
|
|
{
|
|
int listeners = 0;
|
|
|
|
if (service)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener)
|
|
&& listener->listener && listener->listener->session->state == SESSION_STATE_LISTENER)
|
|
{
|
|
if (poll_remove_dcb(listener->listener) == 0)
|
|
{
|
|
listener->listener->session->state = SESSION_STATE_LISTENER_STOPPED;
|
|
listeners++;
|
|
}
|
|
}
|
|
}
|
|
|
|
service->state = SERVICE_STATE_STOPPED;
|
|
}
|
|
|
|
return listeners > 0;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
bool serviceStart(SERVICE* service)
|
|
{
|
|
int listeners = 0;
|
|
|
|
if (service)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener)
|
|
&& listener->listener && listener->listener->session->state == SESSION_STATE_LISTENER_STOPPED)
|
|
{
|
|
if (poll_add_dcb(listener->listener) == 0)
|
|
{
|
|
listener->listener->session->state = SESSION_STATE_LISTENER;
|
|
listeners++;
|
|
}
|
|
}
|
|
}
|
|
|
|
service->state = SERVICE_STATE_STARTED;
|
|
}
|
|
|
|
return listeners > 0;
|
|
}
|
|
|
|
/**
|
|
* Add a listener to a service
|
|
*
|
|
* @param service Service where listener is added
|
|
* @param proto Listener to add
|
|
*/
|
|
static void service_add_listener(SERVICE* service, SERV_LISTENER* proto)
|
|
{
|
|
do
|
|
{
|
|
/** Read the current value of the list's head. This will be our expected
|
|
* value for the following compare-and-swap operation. */
|
|
proto->next = (SERV_LISTENER*)atomic_load_ptr((void**)&service->ports);
|
|
}
|
|
/** Compare the current value to our expected value and if they match, replace
|
|
* the current value with our new value. */
|
|
while (!atomic_cas_ptr((void**)&service->ports, (void**)&proto->next, proto));
|
|
}
|
|
|
|
bool service_remove_listener(Service* service, const char* target)
|
|
{
|
|
bool rval = false;
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener) && strcmp(listener->name, target) == 0)
|
|
{
|
|
listener_set_active(listener, false);
|
|
|
|
if (poll_remove_dcb(listener->listener) == 0)
|
|
{
|
|
listener->listener->session->state = SESSION_STATE_LISTENER_STOPPED;
|
|
rval = true;
|
|
|
|
// TODO: This is not pretty but it works, revise when listeners are refactored. This is
|
|
// thread-safe as the listener is freed on the same thread that closes the socket.
|
|
close(listener->listener->fd);
|
|
listener->listener->fd = -1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
/**
|
|
* Create a listener for 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 Created listener or NULL on error
|
|
*/
|
|
SERV_LISTENER* serviceCreateListener(Service* service,
|
|
const char* name,
|
|
const char* protocol,
|
|
const char* address,
|
|
unsigned short port,
|
|
const char* authenticator,
|
|
const char* options,
|
|
SSL_LISTENER* ssl)
|
|
{
|
|
SERV_LISTENER* proto = listener_alloc(service,
|
|
name,
|
|
protocol,
|
|
address,
|
|
port,
|
|
authenticator,
|
|
options,
|
|
ssl);
|
|
|
|
if (proto)
|
|
{
|
|
service_add_listener(service, proto);
|
|
}
|
|
|
|
return proto;
|
|
}
|
|
|
|
SERV_LISTENER* service_find_listener(Service* service,
|
|
const char* socket,
|
|
const char* address,
|
|
unsigned short port)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener))
|
|
{
|
|
bool is_same_port = false;
|
|
|
|
if (port && (port == listener->port)
|
|
&& ((address && listener->address && strcmp(listener->address, address) == 0)
|
|
|| (address == NULL && listener->address == NULL)))
|
|
{
|
|
is_same_port = true;
|
|
}
|
|
|
|
bool is_same_socket = false;
|
|
|
|
if (!is_same_port)
|
|
{
|
|
if (socket && listener->address && strcmp(listener->address, socket) == 0)
|
|
{
|
|
is_same_socket = true;
|
|
}
|
|
}
|
|
|
|
if (is_same_port || is_same_socket)
|
|
{
|
|
return listener;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
bool serviceHasListener(Service* service,
|
|
const char* name,
|
|
const char* protocol,
|
|
const char* address,
|
|
unsigned short port)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener)
|
|
&& // Listener with same name exists
|
|
(strcmp(listener->name, name) == 0
|
|
|| // Listener listening on the same interface and port exists
|
|
((strcmp(listener->protocol, protocol) == 0 && listener->port == port
|
|
&& ((address && listener->address && strcmp(listener->address, address) == 0)
|
|
|| (address == NULL && listener->address == NULL))))))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool service_has_named_listener(Service* service, const char* name)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener) && strcmp(listener->name, name) == 0)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool service_can_be_destroyed(Service* service)
|
|
{
|
|
bool rval = true;
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener))
|
|
{
|
|
rval = false;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (rval)
|
|
{
|
|
for (auto s = service->dbref; s; s = s->next)
|
|
{
|
|
if (s->active)
|
|
{
|
|
rval = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!service->get_filters().empty())
|
|
{
|
|
rval = false;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
/**
|
|
* Allocate a new server reference
|
|
*
|
|
* @param server Server to refer to
|
|
* @return Server reference or NULL on error
|
|
*/
|
|
static SERVER_REF* server_ref_create(SERVER* server)
|
|
{
|
|
SERVER_REF* sref = (SERVER_REF*)MXS_MALLOC(sizeof(SERVER_REF));
|
|
|
|
if (sref)
|
|
{
|
|
sref->next = NULL;
|
|
sref->server = server;
|
|
// all servers have weight 1.0, when weights are not configured.
|
|
sref->server_weight = 1.0;
|
|
sref->connections = 0;
|
|
sref->active = true;
|
|
}
|
|
|
|
return sref;
|
|
}
|
|
|
|
/**
|
|
* Add a backend database server to a service
|
|
*
|
|
* @param service The service to add the server to
|
|
* @param server The server to add
|
|
*/
|
|
bool serviceAddBackend(SERVICE* svc, SERVER* server)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
bool rval = false;
|
|
|
|
if (!serviceHasBackend(service, server))
|
|
{
|
|
SERVER_REF* new_ref = server_ref_create(server);
|
|
|
|
if (new_ref)
|
|
{
|
|
rval = true;
|
|
LockGuard guard(service->lock);
|
|
|
|
service->n_dbref++;
|
|
|
|
if (service->dbref)
|
|
{
|
|
SERVER_REF* ref = service->dbref;
|
|
SERVER_REF* prev = ref;
|
|
|
|
while (ref)
|
|
{
|
|
if (ref->server == server)
|
|
{
|
|
ref->active = true;
|
|
break;
|
|
}
|
|
prev = ref;
|
|
ref = ref->next;
|
|
}
|
|
|
|
if (ref == NULL)
|
|
{
|
|
/** A new server that hasn't been used by this service */
|
|
atomic_synchronize();
|
|
prev->next = new_ref;
|
|
}
|
|
else
|
|
{
|
|
MXS_FREE(new_ref);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
atomic_synchronize();
|
|
service->dbref = new_ref;
|
|
}
|
|
}
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
/**
|
|
* @brief Remove a server from a service
|
|
*
|
|
* This function sets the server reference into an inactive state. This does not
|
|
* remove the server from the list or free any of the memory.
|
|
*
|
|
* @param service Service to modify
|
|
* @param server Server to remove
|
|
*/
|
|
void serviceRemoveBackend(Service* service, const SERVER* server)
|
|
{
|
|
LockGuard guard(service->lock);
|
|
|
|
for (SERVER_REF* ref = service->dbref; ref; ref = ref->next)
|
|
{
|
|
if (ref->server == server && ref->active)
|
|
{
|
|
ref->active = false;
|
|
service->n_dbref--;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
bool serviceHasBackend(Service* service, SERVER* server)
|
|
{
|
|
SERVER_REF* ptr;
|
|
|
|
LockGuard guard(service->lock);
|
|
ptr = service->dbref;
|
|
while (ptr)
|
|
{
|
|
if (ptr->server == server && ptr->active)
|
|
{
|
|
break;
|
|
}
|
|
ptr = ptr->next;
|
|
}
|
|
|
|
return ptr != NULL;
|
|
}
|
|
|
|
/**
|
|
* Get the service user that is used to log in to the backend 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
|
|
*/
|
|
void serviceGetUser(SERVICE* svc, const char** user, const char** auth)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
*user = service->user;
|
|
*auth = service->password;
|
|
}
|
|
|
|
/**
|
|
* 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 service_enable_root(Service* svc, int action)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
|
|
if (action != 0 && action != 1)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
service->enable_root = action;
|
|
|
|
return 1;
|
|
}
|
|
|
|
bool Service::set_filters(const std::vector<std::string>& filters)
|
|
{
|
|
bool rval = true;
|
|
std::vector<SFilterDef> flist;
|
|
uint64_t my_capabilities = 0;
|
|
|
|
for (auto f : filters)
|
|
{
|
|
fix_object_name(f);
|
|
|
|
if (auto def = filter_find(f.c_str()))
|
|
{
|
|
flist.push_back(def);
|
|
|
|
const MXS_MODULE* module = get_module(def->module.c_str(), MODULE_FILTER);
|
|
mxb_assert(module);
|
|
my_capabilities |= module->module_capabilities;
|
|
|
|
if (def->obj->getCapabilities)
|
|
{
|
|
my_capabilities |= def->obj->getCapabilities(def->filter);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("Unable to find filter '%s' for service '%s'", f.c_str(), name);
|
|
rval = false;
|
|
}
|
|
}
|
|
|
|
if (rval)
|
|
{
|
|
UniqueLock guard(lock);
|
|
m_filters = flist;
|
|
capabilities |= my_capabilities;
|
|
guard.unlock();
|
|
|
|
// Broadcast a message to other workers to update their filter lists
|
|
mxs_rworker_broadcast(update_filters_cb, this);
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
static void destroy_filter_list(void* data)
|
|
{
|
|
Service::FilterList* filters = static_cast<Service::FilterList*>(data);
|
|
delete filters;
|
|
}
|
|
|
|
Service::FilterList* Service::get_local_filters() const
|
|
{
|
|
FilterList* filters = static_cast<FilterList*>(mxs_rworker_get_data(m_wkey));
|
|
|
|
if (filters == nullptr)
|
|
{
|
|
UniqueLock guard(lock);
|
|
filters = new FilterList(m_filters);
|
|
guard.unlock();
|
|
mxs_rworker_set_data(m_wkey, filters, destroy_filter_list);
|
|
}
|
|
|
|
return filters;
|
|
}
|
|
|
|
void Service::update_local_filters()
|
|
{
|
|
FilterList* filters = get_local_filters();
|
|
LockGuard guard(lock);
|
|
*filters = m_filters;
|
|
}
|
|
|
|
const Service::FilterList& Service::get_filters() const
|
|
{
|
|
return *get_local_filters();
|
|
}
|
|
|
|
Service* service_internal_find(const char* name)
|
|
{
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* s : this_unit.services)
|
|
{
|
|
if (strcmp(s->name, name) == 0 && atomic_load_int(&s->active))
|
|
{
|
|
return s;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* Return a named service
|
|
*
|
|
* @param servname The name of the service to find
|
|
* @return The service or NULL if not found
|
|
*/
|
|
SERVICE* service_find(const char* servname)
|
|
{
|
|
return service_internal_find(servname);
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
{
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* s : this_unit.services)
|
|
{
|
|
dprintService(dcb, s);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Print details of a single service.
|
|
*
|
|
* @param dcb DCB to print data to
|
|
* @param service The service to print
|
|
*/
|
|
void dprintService(DCB* dcb, SERVICE* svc)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
SERVER_REF* server = service->dbref;
|
|
struct tm result;
|
|
char timebuf[30];
|
|
|
|
dcb_printf(dcb, "\tService: %s\n", service->name);
|
|
dcb_printf(dcb, "\tRouter: %s\n", service->routerModule);
|
|
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");
|
|
auto filters = service->get_filters();
|
|
|
|
if (!filters.empty())
|
|
{
|
|
dcb_printf(dcb, "\tFilter chain: ");
|
|
const char* sep = "";
|
|
for (const auto& f : filters)
|
|
{
|
|
dcb_printf(dcb, "%s %s ", f->name.c_str(), sep);
|
|
sep = "|";
|
|
}
|
|
dcb_printf(dcb, "\n");
|
|
}
|
|
dcb_printf(dcb, "\tBackend databases:\n");
|
|
while (server)
|
|
{
|
|
if (SERVER_REF_IS_ACTIVE(server))
|
|
{
|
|
dcb_printf(dcb,
|
|
"\t\t[%s]:%d Protocol: %s Name: %s\n",
|
|
server->server->address,
|
|
server->server->port,
|
|
server->server->protocol,
|
|
server->server->name);
|
|
}
|
|
server = server->next;
|
|
}
|
|
if (*service->weightby)
|
|
{
|
|
dcb_printf(dcb,
|
|
"\tRouting weight parameter: %s\n",
|
|
service->weightby);
|
|
}
|
|
|
|
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)
|
|
{
|
|
const char HORIZ_SEPARATOR[] = "--------------------------+-------------------"
|
|
"+--------+----------------+-------------------\n";
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
if (!this_unit.services.empty())
|
|
{
|
|
dcb_printf(dcb, "Services.\n");
|
|
dcb_printf(dcb, "%s", HORIZ_SEPARATOR);
|
|
dcb_printf(dcb,
|
|
"%-25s | %-17s | #Users | Total Sessions | Backend databases\n",
|
|
"Service Name",
|
|
"Router Module");
|
|
dcb_printf(dcb, "%s", HORIZ_SEPARATOR);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
mxb_assert(service->stats.n_current >= 0);
|
|
dcb_printf(dcb,
|
|
"%-25s | %-17s | %6d | %14d | ",
|
|
service->name,
|
|
service->routerModule,
|
|
service->stats.n_current,
|
|
service->stats.n_sessions);
|
|
|
|
SERVER_REF* server_ref = service->dbref;
|
|
bool first = true;
|
|
while (server_ref)
|
|
{
|
|
if (SERVER_REF_IS_ACTIVE(server_ref))
|
|
{
|
|
if (first)
|
|
{
|
|
dcb_printf(dcb, "%s", server_ref->server->name);
|
|
}
|
|
else
|
|
{
|
|
dcb_printf(dcb, ", %s", server_ref->server->name);
|
|
}
|
|
first = false;
|
|
}
|
|
server_ref = server_ref->next;
|
|
}
|
|
dcb_printf(dcb, "\n");
|
|
}
|
|
dcb_printf(dcb, "%s\n", HORIZ_SEPARATOR);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* List the defined listeners in a tabular format.
|
|
*
|
|
* @param dcb DCB to print the service list to.
|
|
*/
|
|
void dListListeners(DCB* dcb)
|
|
{
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
if (!this_unit.services.empty())
|
|
{
|
|
dcb_printf(dcb, "Listeners.\n");
|
|
dcb_printf(dcb,
|
|
"---------------------+---------------------+"
|
|
"--------------------+-----------------+-------+--------\n");
|
|
dcb_printf(dcb,
|
|
"%-20s | %-19s | %-18s | %-15s | Port | State\n",
|
|
"Name",
|
|
"Service Name",
|
|
"Protocol Module",
|
|
"Address");
|
|
dcb_printf(dcb,
|
|
"---------------------+---------------------+"
|
|
"--------------------+-----------------+-------+--------\n");
|
|
}
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener))
|
|
{
|
|
dcb_printf(dcb,
|
|
"%-20s | %-19s | %-18s | %-15s | %5d | %s\n",
|
|
listener->name,
|
|
service->name,
|
|
listener->protocol,
|
|
(listener && listener->address) ? listener->address : "*",
|
|
listener->port,
|
|
listener_state_to_string(listener));
|
|
}
|
|
}
|
|
}
|
|
if (!this_unit.services.empty())
|
|
{
|
|
dcb_printf(dcb,
|
|
"---------------------+---------------------+"
|
|
"--------------------+-----------------+-------+--------\n\n");
|
|
}
|
|
}
|
|
|
|
bool Service::refresh_users()
|
|
{
|
|
mxs::WatchdogWorkaround workaround;
|
|
bool ret = true;
|
|
int self = mxs_rworker_get_current_id();
|
|
mxb_assert(self >= 0);
|
|
time_t now = time(NULL);
|
|
|
|
// Use unique_lock instead of lock_guard to make the locking conditional
|
|
UniqueLock guard(lock, std::defer_lock);
|
|
|
|
if ((capabilities & ACAP_TYPE_ASYNC) == 0)
|
|
{
|
|
// Use only one rate limitation for synchronous authenticators to keep
|
|
// rate limitations synchronous as well
|
|
self = 0;
|
|
guard.lock();
|
|
}
|
|
|
|
MXS_CONFIG* config = config_get_global_options();
|
|
|
|
/* Check if refresh rate limit has been exceeded */
|
|
if (now < m_rate_limits[self].last + config->users_refresh_time)
|
|
{
|
|
if (!m_rate_limits[self].warned)
|
|
{
|
|
MXS_WARNING("[%s] Refresh rate limit (once every %ld seconds) exceeded for "
|
|
"load of users' table.",
|
|
m_name.c_str(),
|
|
config->users_refresh_time);
|
|
m_rate_limits[self].warned = true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
m_rate_limits[self].last = now;
|
|
m_rate_limits[self].warned = false;
|
|
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(this, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
/** Load the authentication users before before starting the listener */
|
|
if (listener_is_active(listener) && listener->listener
|
|
&& listener->listener->authfunc.loadusers)
|
|
{
|
|
switch (listener->listener->authfunc.loadusers(listener))
|
|
{
|
|
case MXS_AUTH_LOADUSERS_FATAL:
|
|
MXS_ERROR("[%s] Fatal error when loading users for listener '%s',"
|
|
" authentication will not work.",
|
|
m_name.c_str(),
|
|
listener->name);
|
|
ret = false;
|
|
break;
|
|
|
|
case MXS_AUTH_LOADUSERS_ERROR:
|
|
MXS_WARNING("[%s] Failed to load users for listener '%s', authentication"
|
|
" might not work.",
|
|
m_name.c_str(),
|
|
listener->name);
|
|
ret = false;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* 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* svc)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
mxb_assert(service);
|
|
return service->refresh_users() ? 0 : 1;
|
|
}
|
|
|
|
void service_add_parameters(Service* service, const MXS_CONFIG_PARAMETER* param)
|
|
{
|
|
while (param)
|
|
{
|
|
MXS_CONFIG_PARAMETER* new_param = config_clone_param(param);
|
|
new_param->next = service->svc_config_param;
|
|
service->svc_config_param = new_param;
|
|
param = param->next;
|
|
}
|
|
}
|
|
|
|
void service_add_parameter(Service* service, const char* key, const char* value)
|
|
{
|
|
MXS_CONFIG_PARAMETER p {const_cast<char*>(key), const_cast<char*>(value), nullptr};
|
|
service_add_parameters(service, &p);
|
|
}
|
|
|
|
void service_remove_parameter(Service* service, const char* key)
|
|
{
|
|
if (MXS_CONFIG_PARAMETER* params = service->svc_config_param)
|
|
{
|
|
MXS_CONFIG_PARAMETER* to_free = NULL;
|
|
|
|
if (strcasecmp(params->name, key) == 0)
|
|
{
|
|
service->svc_config_param = params->next;
|
|
to_free = params;
|
|
}
|
|
else
|
|
{
|
|
while (MXS_CONFIG_PARAMETER* p = params->next)
|
|
{
|
|
if (strcasecmp(p->name, key) == 0)
|
|
{
|
|
params->next = p->next;
|
|
to_free = p;
|
|
break;
|
|
}
|
|
|
|
params = p;
|
|
}
|
|
}
|
|
|
|
if (to_free)
|
|
{
|
|
// Set next pointer to null to prevent freeing of other parameters
|
|
to_free->next = NULL;
|
|
config_parameter_free(to_free);
|
|
}
|
|
}
|
|
}
|
|
|
|
void service_replace_parameter(Service* service, const char* key, const char* value)
|
|
{
|
|
for (MXS_CONFIG_PARAMETER* p = service->svc_config_param; p; p = p->next)
|
|
{
|
|
if (strcasecmp(p->name, key) == 0)
|
|
{
|
|
MXS_FREE(p->value);
|
|
p->value = MXS_STRDUP_A(value);
|
|
return;
|
|
}
|
|
}
|
|
|
|
service_add_parameter(service, key, value);
|
|
}
|
|
|
|
/**
|
|
* Return the parameter the wervice shoudl use to weight connections
|
|
* by
|
|
* @param service The Service pointer
|
|
*/
|
|
const char* serviceGetWeightingParameter(SERVICE* svc)
|
|
{
|
|
Service* service = static_cast<Service*>(svc);
|
|
return service->weightby;
|
|
}
|
|
|
|
void service_destroy_instances(void)
|
|
{
|
|
// The global list is modified by service_free so we need a copy of it
|
|
std::vector<Service*> my_services = this_unit.services;
|
|
|
|
for (Service* s : my_services)
|
|
{
|
|
service_free(s);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the count of all sessions active for all services
|
|
*
|
|
* @return Count of all active sessions
|
|
*/
|
|
int serviceSessionCountAll()
|
|
{
|
|
int rval = 0;
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
rval += service->stats.n_current;
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
/**
|
|
* Return a resultset that has the current set of services in it
|
|
*
|
|
* @return A Result set
|
|
*/
|
|
std::unique_ptr<ResultSet> serviceGetListenerList()
|
|
{
|
|
std::unique_ptr<ResultSet> set = ResultSet::create({"Service Name", "Protocol Module", "Address", "Port",
|
|
"State"});
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* lptr = listener_iterator_init(service, &iter);
|
|
lptr; lptr = listener_iterator_next(&iter))
|
|
{
|
|
set->add_row({service->name, lptr->protocol, lptr->address,
|
|
std::to_string(lptr->port), listener_state_to_string(lptr)});
|
|
}
|
|
}
|
|
|
|
return set;
|
|
}
|
|
|
|
/**
|
|
* Return a result set that has the current set of services in it
|
|
*
|
|
* @return A Result set
|
|
*/
|
|
std::unique_ptr<ResultSet> serviceGetList()
|
|
{
|
|
std::unique_ptr<ResultSet> set = ResultSet::create({"Service Name", "Router Module", "No. Sessions",
|
|
"Total Sessions"});
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* s : this_unit.services)
|
|
{
|
|
set->add_row({s->name, s->routerModule, std::to_string(s->stats.n_current),
|
|
std::to_string(s->stats.n_sessions)});
|
|
}
|
|
|
|
return set;
|
|
}
|
|
|
|
/**
|
|
* Function called by the housekeeper thread to retry starting of a service
|
|
* @param data Service to restart
|
|
*/
|
|
static bool service_internal_restart(void* data)
|
|
{
|
|
Service* service = (Service*)data;
|
|
serviceStartAllPorts(service);
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Check that all services have listeners
|
|
* @return True if all services have listeners
|
|
*/
|
|
bool service_all_services_have_listeners()
|
|
{
|
|
bool rval = true;
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
|
|
if (listener == NULL)
|
|
{
|
|
MXS_ERROR("Service '%s' has no listeners.", service->name);
|
|
rval = false;
|
|
}
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
static void service_calculate_weights(SERVICE* service)
|
|
{
|
|
const char* weightby = serviceGetWeightingParameter(service);
|
|
|
|
if (*weightby && service->dbref)
|
|
{
|
|
// DEPRECATED in 2.3, remove in 2.4.
|
|
MXS_WARNING("Setting of server weights (%s) has been deprecated"
|
|
" and will be removed in a later version of MaxScale.",
|
|
weightby);
|
|
|
|
char buf[50]; // Enough to hold most numbers
|
|
/** Service has a weighting parameter and at least one server */
|
|
double total {0};
|
|
|
|
/** Calculate total weight */
|
|
for (SERVER_REF* server = service->dbref; server; server = server->next)
|
|
{
|
|
if (server_get_parameter(server->server, weightby, buf, sizeof(buf)))
|
|
{
|
|
long w = atol(buf);
|
|
if (w > 0)
|
|
{
|
|
total += w;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (total == 0)
|
|
{
|
|
MXS_WARNING("Weighting parameters for service '%s' will be ignored as "
|
|
"no servers have (positive) values for the parameter '%s'.",
|
|
service->name,
|
|
weightby);
|
|
}
|
|
else
|
|
{
|
|
/** Calculate the relative weight of the servers */
|
|
for (SERVER_REF* server = service->dbref; server; server = server->next)
|
|
{
|
|
if (server_get_parameter(server->server, weightby, buf, sizeof(buf)))
|
|
{
|
|
long config_weight = atol(buf);
|
|
if (config_weight <= 0)
|
|
{
|
|
MXS_WARNING("Weighting parameter '%s' is set to %ld for server '%s'."
|
|
" The runtime weight will be set to 0, and the server"
|
|
" will only be used if no other servers are available.",
|
|
weightby,
|
|
config_weight,
|
|
server->server->name);
|
|
config_weight = 0;
|
|
}
|
|
server->server_weight = config_weight / total;
|
|
}
|
|
else
|
|
{
|
|
MXS_WARNING("Weighting parameter '%s' is not set for server '%s'."
|
|
" The runtime weight will be set to 0, and the server"
|
|
" will only be used if no other servers are available.",
|
|
weightby,
|
|
server->server->name);
|
|
server->server_weight = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void service_update_weights()
|
|
{
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
service_calculate_weights(service);
|
|
}
|
|
}
|
|
|
|
bool service_server_in_use(const SERVER* server)
|
|
{
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
LockGuard guard(service->lock);
|
|
|
|
for (SERVER_REF* ref = service->dbref; ref; ref = ref->next)
|
|
{
|
|
if (ref->active && ref->server == server)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool service_filter_in_use(const SFilterDef& filter)
|
|
{
|
|
mxb_assert(filter);
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
for (const auto& f : service->get_filters())
|
|
{
|
|
if (filter == f)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Creates a service configuration at the location pointed by @c filename
|
|
*
|
|
* @param service Service to serialize into a configuration
|
|
* @param filename Filename where configuration is written
|
|
* @return True on success, false on error
|
|
*/
|
|
bool Service::dump_config(const char* filename) const
|
|
{
|
|
int file = open(filename, O_EXCL | O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
|
|
|
|
if (file == -1)
|
|
{
|
|
MXS_ERROR("Failed to open file '%s' when serializing service '%s': %d, %s",
|
|
filename,
|
|
m_name.c_str(),
|
|
errno,
|
|
mxs_strerror(errno));
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* TODO: Check for return values on all of the dprintf calls
|
|
*/
|
|
dprintf(file, "[%s]\n", m_name.c_str());
|
|
dprintf(file, "%s=service\n", CN_TYPE);
|
|
|
|
if (!m_filters.empty())
|
|
{
|
|
dprintf(file, "%s=", CN_FILTERS);
|
|
const char* sep = "";
|
|
|
|
for (const auto& f : m_filters)
|
|
{
|
|
dprintf(file, "%s%s", sep, f->name.c_str());
|
|
sep = "|";
|
|
}
|
|
|
|
dprintf(file, "\n");
|
|
}
|
|
|
|
if (dbref)
|
|
{
|
|
dprintf(file, "%s=", CN_SERVERS);
|
|
const char* sep = "";
|
|
|
|
for (SERVER_REF* db = dbref; db; db = db->next)
|
|
{
|
|
if (SERVER_REF_IS_ACTIVE(db))
|
|
{
|
|
dprintf(file, "%s%s", sep, db->server->name);
|
|
sep = ",";
|
|
}
|
|
}
|
|
dprintf(file, "\n");
|
|
}
|
|
|
|
const MXS_MODULE* mod = get_module(m_router_name.c_str(), NULL);
|
|
mxb_assert(mod);
|
|
|
|
dump_param_list(file,
|
|
svc_config_param,
|
|
{CN_TYPE, CN_FILTERS, CN_SERVERS},
|
|
config_service_params,
|
|
mod->parameters);
|
|
|
|
close(file);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool service_serialize(const Service* service)
|
|
{
|
|
bool rval = false;
|
|
char filename[PATH_MAX];
|
|
snprintf(filename,
|
|
sizeof(filename),
|
|
"%s/%s.cnf.tmp",
|
|
get_config_persistdir(),
|
|
service->name);
|
|
|
|
if (unlink(filename) == -1 && errno != ENOENT)
|
|
{
|
|
MXS_ERROR("Failed to remove temporary service configuration at '%s': %d, %s",
|
|
filename,
|
|
errno,
|
|
mxs_strerror(errno));
|
|
}
|
|
else if (service->dump_config(filename))
|
|
{
|
|
char final_filename[PATH_MAX];
|
|
strcpy(final_filename, filename);
|
|
|
|
char* dot = strrchr(final_filename, '.');
|
|
mxb_assert(dot);
|
|
*dot = '\0';
|
|
|
|
if (rename(filename, final_filename) == 0)
|
|
{
|
|
rval = true;
|
|
}
|
|
else
|
|
{
|
|
MXS_ERROR("Failed to rename temporary service configuration at '%s': %d, %s",
|
|
filename,
|
|
errno,
|
|
mxs_strerror(errno));
|
|
}
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
void service_print_users(DCB* dcb, const SERVICE* service)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener) && listener->listener
|
|
&& listener->listener->authfunc.diagnostic)
|
|
{
|
|
dcb_printf(dcb, "User names (%s): ", listener->name);
|
|
|
|
listener->listener->authfunc.diagnostic(dcb, listener);
|
|
|
|
dcb_printf(dcb, "\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
bool service_port_is_used(unsigned short port)
|
|
{
|
|
bool rval = false;
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener) && listener->port == port)
|
|
{
|
|
rval = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (rval)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
return rval;
|
|
}
|
|
|
|
static const char* service_state_to_string(int state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case SERVICE_STATE_STARTED:
|
|
return "Started";
|
|
|
|
case SERVICE_STATE_STOPPED:
|
|
return "Stopped";
|
|
|
|
case SERVICE_STATE_FAILED:
|
|
return "Failed";
|
|
|
|
case SERVICE_STATE_ALLOC:
|
|
return "Allocated";
|
|
|
|
default:
|
|
mxb_assert(false);
|
|
return "Unknown";
|
|
}
|
|
}
|
|
|
|
json_t* service_parameters_to_json(const SERVICE* service)
|
|
{
|
|
json_t* rval = json_object();
|
|
|
|
const MXS_MODULE* mod = get_module(service->routerModule, MODULE_ROUTER);
|
|
config_add_module_params_json(service->svc_config_param,
|
|
{CN_TYPE, CN_ROUTER, CN_SERVERS, CN_FILTERS},
|
|
config_service_params,
|
|
mod->parameters,
|
|
rval);
|
|
|
|
return rval;
|
|
}
|
|
|
|
static inline bool have_active_servers(const SERVICE* service)
|
|
{
|
|
for (SERVER_REF* ref = service->dbref; ref; ref = ref->next)
|
|
{
|
|
if (SERVER_REF_IS_ACTIVE(ref))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static json_t* service_all_listeners_json_data(const SERVICE* service)
|
|
{
|
|
json_t* arr = json_array();
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener))
|
|
{
|
|
json_array_append_new(arr, listener_to_json(listener));
|
|
}
|
|
}
|
|
|
|
return arr;
|
|
}
|
|
|
|
static json_t* service_listener_json_data(const SERVICE* service, const char* name)
|
|
{
|
|
LISTENER_ITERATOR iter;
|
|
|
|
for (SERV_LISTENER* listener = listener_iterator_init(service, &iter);
|
|
listener; listener = listener_iterator_next(&iter))
|
|
{
|
|
if (listener_is_active(listener) && strcmp(listener->name, name) == 0)
|
|
{
|
|
return listener_to_json(listener);
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
json_t* service_attributes(const SERVICE* service)
|
|
{
|
|
json_t* attr = json_object();
|
|
|
|
json_object_set_new(attr, CN_ROUTER, json_string(service->routerModule));
|
|
json_object_set_new(attr, CN_STATE, json_string(service_state_to_string(service->state)));
|
|
|
|
if (service->router && service->router_instance && service->router->diagnostics_json)
|
|
{
|
|
json_t* diag = service->router->diagnostics_json(service->router_instance);
|
|
|
|
if (diag)
|
|
{
|
|
json_object_set_new(attr, CN_ROUTER_DIAGNOSTICS, diag);
|
|
}
|
|
}
|
|
|
|
struct tm result;
|
|
char timebuf[30];
|
|
|
|
asctime_r(localtime_r(&service->stats.started, &result), timebuf);
|
|
trim(timebuf);
|
|
|
|
json_object_set_new(attr, "started", json_string(timebuf));
|
|
json_object_set_new(attr, "total_connections", json_integer(service->stats.n_sessions));
|
|
json_object_set_new(attr, "connections", json_integer(service->stats.n_current));
|
|
|
|
/** Add service parameters and listeners */
|
|
json_object_set_new(attr, CN_PARAMETERS, service_parameters_to_json(service));
|
|
json_object_set_new(attr, CN_LISTENERS, service_all_listeners_json_data(service));
|
|
|
|
return attr;
|
|
}
|
|
|
|
json_t* Service::json_relationships(const char* host) const
|
|
{
|
|
/** Store relationships to other objects */
|
|
json_t* rel = json_object();
|
|
|
|
if (!m_filters.empty())
|
|
{
|
|
json_t* filters = mxs_json_relationship(host, MXS_JSON_API_FILTERS);
|
|
|
|
for (const auto& f : m_filters)
|
|
{
|
|
mxs_json_add_relation(filters, f->name.c_str(), CN_FILTERS);
|
|
}
|
|
|
|
json_object_set_new(rel, CN_FILTERS, filters);
|
|
}
|
|
|
|
if (have_active_servers(this))
|
|
{
|
|
json_t* servers = mxs_json_relationship(host, MXS_JSON_API_SERVERS);
|
|
|
|
for (SERVER_REF* ref = dbref; ref; ref = ref->next)
|
|
{
|
|
if (SERVER_REF_IS_ACTIVE(ref))
|
|
{
|
|
mxs_json_add_relation(servers, ref->server->name, CN_SERVERS);
|
|
}
|
|
}
|
|
|
|
json_object_set_new(rel, CN_SERVERS, servers);
|
|
}
|
|
|
|
return rel;
|
|
}
|
|
|
|
json_t* service_json_data(const SERVICE* svc, const char* host)
|
|
{
|
|
const Service* service = static_cast<const Service*>(svc);
|
|
json_t* rval = json_object();
|
|
LockGuard guard(service->lock);
|
|
|
|
json_object_set_new(rval, CN_ID, json_string(service->name));
|
|
json_object_set_new(rval, CN_TYPE, json_string(CN_SERVICES));
|
|
json_object_set_new(rval, CN_ATTRIBUTES, service_attributes(service));
|
|
json_object_set_new(rval, CN_RELATIONSHIPS, service->json_relationships(host));
|
|
json_object_set_new(rval, CN_LINKS, mxs_json_self_link(host, CN_SERVICES, service->name));
|
|
|
|
return rval;
|
|
}
|
|
|
|
json_t* service_to_json(const Service* service, const char* host)
|
|
{
|
|
string self = MXS_JSON_API_SERVICES;
|
|
self += service->name;
|
|
return mxs_json_resource(host, self.c_str(), service_json_data(service, host));
|
|
}
|
|
|
|
json_t* service_listener_list_to_json(const Service* service, const char* host)
|
|
{
|
|
/** This needs to be done here as the listeners are sort of sub-resources
|
|
* of the service. */
|
|
string self = MXS_JSON_API_SERVICES;
|
|
self += service->name;
|
|
self += "/listeners";
|
|
|
|
return mxs_json_resource(host, self.c_str(), service_all_listeners_json_data(service));
|
|
}
|
|
|
|
json_t* service_listener_to_json(const Service* service, const char* name, const char* host)
|
|
{
|
|
/** This needs to be done here as the listeners are sort of sub-resources
|
|
* of the service. */
|
|
string self = MXS_JSON_API_SERVICES;
|
|
self += service->name;
|
|
self += "/listeners/";
|
|
self += name;
|
|
|
|
return mxs_json_resource(host, self.c_str(), service_listener_json_data(service, name));
|
|
}
|
|
|
|
json_t* service_list_to_json(const char* host)
|
|
{
|
|
json_t* arr = json_array();
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
json_t* svc = service_json_data(service, host);
|
|
|
|
if (svc)
|
|
{
|
|
json_array_append_new(arr, svc);
|
|
}
|
|
}
|
|
|
|
return mxs_json_resource(host, MXS_JSON_API_SERVICES, arr);
|
|
}
|
|
|
|
json_t* service_relations_to_filter(const SFilterDef& filter, const char* host)
|
|
{
|
|
json_t* rel = mxs_json_relationship(host, MXS_JSON_API_SERVICES);
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
for (const auto& f : service->get_filters())
|
|
{
|
|
if (f == filter)
|
|
{
|
|
mxs_json_add_relation(rel, service->name, CN_SERVICES);
|
|
}
|
|
}
|
|
}
|
|
|
|
return rel;
|
|
}
|
|
|
|
|
|
json_t* service_relations_to_server(const SERVER* server, const char* host)
|
|
{
|
|
std::vector<std::string> names;
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
LockGuard guard(service->lock);
|
|
|
|
for (SERVER_REF* ref = service->dbref; ref; ref = ref->next)
|
|
{
|
|
if (ref->server == server && SERVER_REF_IS_ACTIVE(ref))
|
|
{
|
|
names.push_back(service->name);
|
|
}
|
|
}
|
|
}
|
|
|
|
json_t* rel = NULL;
|
|
|
|
if (!names.empty())
|
|
{
|
|
rel = mxs_json_relationship(host, MXS_JSON_API_SERVICES);
|
|
|
|
for (std::vector<std::string>::iterator it = names.begin();
|
|
it != names.end(); it++)
|
|
{
|
|
mxs_json_add_relation(rel, it->c_str(), CN_SERVICES);
|
|
}
|
|
}
|
|
|
|
return rel;
|
|
}
|
|
|
|
uint64_t service_get_version(const SERVICE* svc, service_version_which_t which)
|
|
{
|
|
const Service* service = static_cast<const Service*>(svc);
|
|
uint64_t version = 0;
|
|
|
|
if (which == SERVICE_VERSION_ANY)
|
|
{
|
|
SERVER_REF* sref = service->dbref;
|
|
|
|
while (sref && !sref->active)
|
|
{
|
|
sref = sref->next;
|
|
}
|
|
|
|
if (sref)
|
|
{
|
|
version = server_get_version(sref->server);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
size_t n = 0;
|
|
|
|
uint64_t v;
|
|
|
|
if (which == SERVICE_VERSION_MIN)
|
|
{
|
|
v = UINT64_MAX;
|
|
}
|
|
else
|
|
{
|
|
mxb_assert(which == SERVICE_VERSION_MAX);
|
|
|
|
v = 0;
|
|
}
|
|
|
|
SERVER_REF* sref = service->dbref;
|
|
|
|
while (sref)
|
|
{
|
|
if (sref->active)
|
|
{
|
|
++n;
|
|
|
|
SERVER* s = sref->server;
|
|
uint64_t server_version = server_get_version(s);
|
|
|
|
if (which == SERVICE_VERSION_MIN)
|
|
{
|
|
if (server_version < v)
|
|
{
|
|
v = server_version;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
mxb_assert(which == SERVICE_VERSION_MAX);
|
|
|
|
if (server_version > v)
|
|
{
|
|
v = server_version;
|
|
}
|
|
}
|
|
}
|
|
|
|
sref = sref->next;
|
|
}
|
|
|
|
if (n == 0)
|
|
{
|
|
v = 0;
|
|
}
|
|
|
|
version = v;
|
|
}
|
|
|
|
return version;
|
|
}
|
|
|
|
bool service_thread_init()
|
|
{
|
|
LockGuard guard(this_unit.lock);
|
|
|
|
for (Service* service : this_unit.services)
|
|
{
|
|
if (service->capabilities & ACAP_TYPE_ASYNC)
|
|
{
|
|
service_refresh_users(service);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Service::is_basic_parameter(const std::string& name)
|
|
{
|
|
static const std::set<std::string> names =
|
|
{
|
|
CN_AUTH_ALL_SERVERS,
|
|
CN_CONNECTION_TIMEOUT,
|
|
CN_ENABLE_ROOT_USER,
|
|
CN_LOCALHOST_MATCH_WILDCARD_HOST,
|
|
CN_LOG_AUTH_WARNINGS,
|
|
CN_MAX_CONNECTIONS,
|
|
CN_MAX_RETRY_INTERVAL,
|
|
CN_PASSWORD,
|
|
CN_RETRY_ON_FAILURE,
|
|
CN_STRIP_DB_ESC,
|
|
CN_USER,
|
|
CN_VERSION_STRING,
|
|
CN_WEIGHTBY,
|
|
CN_FILTERS,
|
|
CN_RETAIN_LAST_STATEMENTS
|
|
};
|
|
|
|
return names.find(name) != names.end();
|
|
}
|
|
|
|
void Service::update_basic_parameter(const std::string& key, const std::string& value)
|
|
{
|
|
if (key == CN_USER)
|
|
{
|
|
m_user = value;
|
|
snprintf(user, sizeof(user), "%s", value.c_str());
|
|
}
|
|
else if (key == CN_PASSWORD)
|
|
{
|
|
m_password = value;
|
|
snprintf(password, sizeof(password), "%s", value.c_str());
|
|
}
|
|
else if (key == CN_ENABLE_ROOT_USER)
|
|
{
|
|
enable_root = config_truth_value(value.c_str());
|
|
}
|
|
else if (key == CN_MAX_RETRY_INTERVAL)
|
|
{
|
|
max_retry_interval = std::stoi(value);
|
|
mxb_assert(max_retry_interval > 0);
|
|
}
|
|
else if (key == CN_MAX_CONNECTIONS)
|
|
{
|
|
max_connections = std::stoi(value);
|
|
mxb_assert(max_connections > 0);
|
|
}
|
|
else if (key == CN_CONNECTION_TIMEOUT)
|
|
{
|
|
if ((conn_idle_timeout = std::stoi(value)))
|
|
{
|
|
dcb_enable_session_timeouts();
|
|
}
|
|
|
|
mxb_assert(conn_idle_timeout >= 0);
|
|
}
|
|
else if (key == CN_AUTH_ALL_SERVERS)
|
|
{
|
|
users_from_all = config_truth_value(value.c_str());
|
|
}
|
|
else if (key == CN_STRIP_DB_ESC)
|
|
{
|
|
strip_db_esc = config_truth_value(value.c_str());
|
|
}
|
|
else if (key == CN_LOCALHOST_MATCH_WILDCARD_HOST)
|
|
{
|
|
localhost_match_wildcard_host = config_truth_value(value.c_str());
|
|
}
|
|
else if (key == CN_VERSION_STRING)
|
|
{
|
|
m_version_string = value;
|
|
snprintf(version_string, sizeof(version_string), "%s", value.c_str());
|
|
}
|
|
else if (key == CN_WEIGHTBY)
|
|
{
|
|
m_weightby = value;
|
|
snprintf(weightby, sizeof(weightby), "%s", value.c_str());
|
|
}
|
|
else if (key == CN_LOG_AUTH_WARNINGS)
|
|
{
|
|
log_auth_warnings = config_truth_value(value.c_str());
|
|
}
|
|
else if (key == CN_RETRY_ON_FAILURE)
|
|
{
|
|
retry_start = config_truth_value(value.c_str());
|
|
}
|
|
else if (key == CN_RETAIN_LAST_STATEMENTS)
|
|
{
|
|
retain_last_statements = std::stoi(value);
|
|
}
|
|
}
|