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MXS-2424 Stop passing redundant information around

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mysql_get_host_info(MYSQL*) returns enough information to identify
the connection.
This commit is contained in:
Johan Wikman 2019-04-08 15:07:13 +03:00
parent c422aafe1d
commit 164ca7b5f1
2 changed files with 25 additions and 31 deletions
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43
server/modules/monitor/clustrixmon/clustrix.cc
View File

@ -98,13 +98,10 @@ Clustrix::SubState Clustrix::substate_from_string(const std::string& substate)
}
}
bool Clustrix::is_part_of_the_quorum(const char* zName, const SERVER& server, MYSQL* pCon)
bool Clustrix::is_part_of_the_quorum(const char* zName, MYSQL* pCon)
{
bool rv = false;
const char* zAddress = server.address;
int port = server.port;
const char ZQUERY[] = "SELECT status FROM system.membership WHERE nid = gtmnid()";
if (mysql_query(pCon, ZQUERY) == 0)
@ -127,51 +124,50 @@ bool Clustrix::is_part_of_the_quorum(const char* zName, const SERVER& server, MY
break;
case Clustrix::Status::STATIC:
MXS_NOTICE("%s: Node %s:%d is not part of the quorum (static), switching to "
MXS_NOTICE("%s: Node %s is not part of the quorum (static), switching to "
"other node for monitoring.",
zName, zAddress, port);
zName, mysql_get_host_info(pCon));
break;
case Clustrix::Status::DYNAMIC:
MXS_NOTICE("%s: Node %s:%d is not part of the quorum (dynamic), switching to "
MXS_NOTICE("%s: Node %s is not part of the quorum (dynamic), switching to "
"other node for monitoring.",
zName, zAddress, port);
zName, mysql_get_host_info(pCon));
break;
case Clustrix::Status::UNKNOWN:
MXS_WARNING("%s: Do not know how to interpret '%s'. Assuming node %s:%d "
MXS_WARNING("%s: Do not know how to interpret '%s'. Assuming node %s "
"is not part of the quorum.",
zName, row[0], zAddress, port);
zName, row[0], mysql_get_host_info(pCon));
}
}
else
{
MXS_WARNING("%s: No status returned for '%s' on %s:%d.", zName, ZQUERY, zAddress, port);
MXS_WARNING("%s: No status returned for '%s' on %s.",
zName, ZQUERY, mysql_get_host_info(pCon));
}
mysql_free_result(pResult);
}
else
{
MXS_WARNING("%s: No result returned for '%s' on %s:%d.", zName, ZQUERY, zAddress, port);
MXS_WARNING("%s: No result returned for '%s' on %s.",
zName, ZQUERY, mysql_get_host_info(pCon));
}
}
else
{
MXS_ERROR("%s: Could not execute '%s' on %s:%d: %s",
zName, ZQUERY, zAddress, port, mysql_error(pCon));
MXS_ERROR("%s: Could not execute '%s' on %s: %s",
zName, ZQUERY, mysql_get_host_info(pCon), mysql_error(pCon));
}
return rv;
}
bool Clustrix::is_being_softfailed(const char* zName, const SERVER& server, MYSQL* pCon)
bool Clustrix::is_being_softfailed(const char* zName, MYSQL* pCon)
{
bool rv = false;
const char* zAddress = server.address;
int port = server.port;
const char ZQUERY[] = "SELECT nodeid FROM system.softfailed_nodes WHERE nodeid = gtmnid()";
if (mysql_query(pCon, ZQUERY) == 0)
@ -193,13 +189,14 @@ bool Clustrix::is_being_softfailed(const char* zName, const SERVER& server, MYSQ
}
else
{
MXS_WARNING("%s: No result returned for '%s' on %s:%d.", zName, ZQUERY, zAddress, port);
MXS_WARNING("%s: No result returned for '%s' on %s.",
zName, ZQUERY, mysql_get_host_info(pCon));
}
}
else
{
MXS_ERROR("%s: Could not execute '%s' on %s:%d: %s",
zName, ZQUERY, zAddress, port, mysql_error(pCon));
MXS_ERROR("%s: Could not execute '%s' on %s: %s",
zName, ZQUERY, mysql_get_host_info(pCon), mysql_error(pCon));
}
return rv;
@ -216,9 +213,9 @@ bool Clustrix::ping_or_connect_to_hub(const char* zName,
if (Monitor::connection_is_ok(rv))
{
if (Clustrix::is_part_of_the_quorum(zName, server, *ppCon))
if (Clustrix::is_part_of_the_quorum(zName, *ppCon))
{
if ((softfailed == Softfailed::REJECT) && Clustrix::is_being_softfailed(zName, server, *ppCon))
if ((softfailed == Softfailed::REJECT) && Clustrix::is_being_softfailed(zName, *ppCon))
{
MXS_NOTICE("%s: The Clustrix node %s used as hub is part of the quorum, "
"but it is being softfailed. Switching to another node.",

13
server/modules/monitor/clustrixmon/clustrix.hh
View File

@ -50,12 +50,11 @@ enum class Softfailed
* Is a particular Clustrix node part of the quorum.
*
* @param zName The name of the Clustrix monitor instance.
* @param server The server object of a Clustrix node.
* @param pCon Valid MYSQL handle to the server.
*
* @return True, if the node is part of the quorum, false otherwise.
*/
bool is_part_of_the_quorum(const char* zName, const SERVER& server, MYSQL* pCon);
bool is_part_of_the_quorum(const char* zName, MYSQL* pCon);
/**
* Is a particular Clustrix node part of the quorum.
@ -67,22 +66,20 @@ bool is_part_of_the_quorum(const char* zName, const SERVER& server, MYSQL* pCon)
*/
inline bool is_part_of_the_quorum(const char* zName, mxs::MonitorServer& ms)
{
mxb_assert(ms.server);
mxb_assert(ms.con);
return is_part_of_the_quorum(zName, *ms.server, ms.con);
return is_part_of_the_quorum(zName, ms.con);
}
/**
* Is a particular Clustrix node being softfailed.
*
* @param zName The name of the Clustrix monitor instance.
* @param server The server object of a Clustrix node.
* @param pCon Valid MYSQL handle to the server.
* @param zName The name of the Clustrix monitor instance.
* @param pCon Valid MYSQL handle to the server.
*
* @return True, if the node is being softfailed, false otherwise.
*/
bool is_being_softfailed(const char* zName, const SERVER& server, MYSQL* pCon);
bool is_being_softfailed(const char* zName, MYSQL* pCon);
/**
* Ping or create connection to server and check whether it can be used