107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
/**@file Module for performance-reporting mechanisms. */
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/*
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* Copyright 2012, 2013, 2014 Range Networks, Inc.
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*
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* This software is distributed under the terms of the GNU Affero Public License.
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* See the COPYING file in the main directory for details.
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*
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* This use of this software may be subject to additional restrictions.
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* See the LEGAL file in the main directory for details.
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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 Affero General Public License as published by
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the Free Software Foundation, either version 3 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 Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef REPORTING_H
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#define REPORTING_H
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#include <sqlite3util.h>
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#include <ostream>
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#include <map>
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#include <string>
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#include <Threads.h>
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#include <Timeval.h>
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typedef std::map<std::string, unsigned> ReportBatch;
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/**
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Collect performance statistics into a database.
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Parameters are counters or max/min trackers, all integer.
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*/
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class ReportingTable {
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private:
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sqlite3* mDB; ///< database connection
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int mFacility; ///< rsyslogd facility
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ReportBatch mBatch; ///< batch of report updates, not yet stored in the db
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mutable Mutex mLock; ///< control for multithreaded read/write access to the batch
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Thread mBatchCommitter; ///< thread responsible for committing batches of report updates to the db
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public:
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bool mReportRunning;
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/**
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Open the database connection;
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create the table if it does not exist yet.
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*/
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ReportingTable(const char* filename);
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/** Create a new parameter. */
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bool create(const char* paramName);
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/** Create an indexed parameter set. */
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bool create(const char* baseBame, unsigned minIndex, unsigned maxIndex);
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/** Increment a counter. */
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bool incr(const char* paramName);
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/** Increment an indexed counter. */
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bool incr(const char* baseName, unsigned index);
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/** Take a max of a parameter. */
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bool max(const char* paramName, unsigned newVal);
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/** Take a max of an indexed parameter. */
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bool max(const char* paramName, unsigned index, unsigned newVal);
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/** Clear the whole table. */
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bool clear();
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/** Clear a value. */
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bool clear(const char* paramName);
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/** Clear an indexed value. */
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bool clear(const char* paramName, unsigned index);
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/** Dump the database to a stream. */
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void dump(std::ostream&) const;
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/** Commit outstanding report updates to the database */
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bool commit();
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void reportShutdown() { mReportRunning = false; }
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};
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/** Periodically triggers ReportingTable::commit(). */
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void* reportingBatchCommitter(void*);
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extern ReportingTable gReports;
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#endif
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// vim: ts=4 sw=4
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