2c4228db47
Added more comments. Also the filter now demonstrates how to 1) read configuration parameters 2) react to queries and replies 3) handle shared filter data 4) print diagnostics output 5) add log entries As the filter is already built and moved to the library directory, it is immediately usable. This should be helpful with assignments.
60 lines
1.5 KiB
C++
60 lines
1.5 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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// All log messages from this module are prefixed with this
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#define MXS_MODULE_NAME "examplefilter"
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#include "examplefiltersession.hh"
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#include "examplefilter.hh"
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ExampleFilterSession::ExampleFilterSession(MXS_SESSION* pSession, ExampleFilter& filter)
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: mxs::FilterSession(pSession)
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, m_filter(filter)
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, m_session_id(pSession->ses_id)
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{
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}
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ExampleFilterSession::~ExampleFilterSession()
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{
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}
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// static
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ExampleFilterSession* ExampleFilterSession::create(MXS_SESSION* pSession, ExampleFilter& filter)
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{
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return new ExampleFilterSession(pSession, filter);
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}
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void ExampleFilterSession::close()
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{
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// When the session is closed, report the numbers to the log.
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MXS_NOTICE("Session %lu routed %i queries and %i replies.", m_session_id, m_queries, m_replies);
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}
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int ExampleFilterSession::routeQuery(GWBUF* pPacket)
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{
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m_queries++;
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m_filter.query_seen();
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// Pass the query forward.
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return mxs::FilterSession::routeQuery(pPacket);
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}
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int ExampleFilterSession::clientReply(GWBUF* pPacket)
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{
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m_replies++;
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m_filter.reply_seen();
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// Pass the reply forward.
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return mxs::FilterSession::clientReply(pPacket);
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}
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