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5cf0ede080
WL#2703 restart for ndb_mgmd Solving two problems with one stone. Allows the stopping and restarting of mgm nodes other than the one the mgmclient is connected to.
110 lines
3 KiB
C++
110 lines
3 KiB
C++
/* Copyright (C) 2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef ConfigRetriever_H
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#define ConfigRetriever_H
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#include <ndb_types.h>
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#include <mgmapi.h>
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#include <BaseString.hpp>
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/**
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* @class ConfigRetriever
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* @brief Used by nodes (DB, MGM, API) to get their config from MGM server.
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*/
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class ConfigRetriever {
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public:
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ConfigRetriever(const char * _connect_string,
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Uint32 version, Uint32 nodeType);
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~ConfigRetriever();
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int do_connect(int no_retries, int retry_delay_in_seconds, int verbose);
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int disconnect();
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/**
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* Get configuration for current node.
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*
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* Configuration is fetched from one MGM server configured in local config
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* file. The method loops over all the configured MGM servers and tries
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* to establish a connection. This is repeated until a connection is
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* established, so the function hangs until a connection is established.
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*
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* @return ndb_mgm_configuration object if succeeded,
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* NULL if erroneous local config file or configuration error.
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*/
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struct ndb_mgm_configuration * getConfig();
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void resetError();
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int hasError();
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const char * getErrorString();
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/**
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* @return Node id of this node (as stated in local config or connectString)
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*/
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Uint32 allocNodeId(int no_retries, int retry_delay_in_seconds);
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int setNodeId(Uint32 nodeid);
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/**
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* Get config using socket
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*/
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struct ndb_mgm_configuration * getConfig(NdbMgmHandle handle);
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/**
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* Get config from file
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*/
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struct ndb_mgm_configuration * getConfig(const char * file);
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/**
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* Verify config
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*/
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bool verifyConfig(const struct ndb_mgm_configuration *, Uint32 nodeid);
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Uint32 get_mgmd_port() const;
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const char *get_mgmd_host() const;
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const char *get_connectstring(char *buf, int buf_sz) const;
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NdbMgmHandle get_mgmHandle() { return m_handle; };
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NdbMgmHandle* get_mgmHandlePtr() { return &m_handle; };
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void end_session(bool end) { m_end_session= end; };
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Uint32 get_configuration_nodeid() const;
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private:
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BaseString errorString;
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enum ErrorType {
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CR_NO_ERROR = 0,
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CR_ERROR = 1,
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CR_RETRY = 2
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};
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ErrorType latestErrorType;
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void setError(ErrorType, const char * errorMsg);
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Uint32 _ownNodeId;
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bool m_end_session;
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/*
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Uint32 m_mgmd_port;
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const char *m_mgmd_host;
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*/
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Uint32 m_version;
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Uint32 m_node_type;
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NdbMgmHandle m_handle;
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};
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#endif
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