71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/* Copyright (c) 2022, 2024, Oracle and/or its affiliates.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is designed to work with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have either included with
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the program or referenced in the documentation.
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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, version 2.0, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef TEST_SERVER_METRICS_HELPERS_INCLUDED
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#define TEST_SERVER_METRICS_HELPERS_INCLUDED
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#include <stdio.h>
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#include <stdlib.h>
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#include <cstdarg> // va_list
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#include <string>
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class FileLogger {
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public:
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explicit FileLogger(const char *filename) : m_path(filename) {}
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void write(const char *format, ...)
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#ifdef __GNUC__
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__attribute__((format(printf, 2, 3)))
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#endif
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{
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if (m_suppress) return;
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// to be thread-safe each call opens the file by itself
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FILE *outfile = fopen(m_path.c_str(), "a+");
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if (outfile) {
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char msg[2048];
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va_list args;
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va_start(args, format);
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const int len = vsnprintf(msg, sizeof(msg), format, args);
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va_end(args);
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const int bytes = std::min(len, (int)(sizeof(msg) - 1));
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auto written [[maybe_unused]] = fwrite(msg, sizeof(char), bytes, outfile);
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(void)fclose(outfile);
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}
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}
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inline void suppress(bool set) { m_suppress = set; }
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private:
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std::string m_path;
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bool m_suppress{false};
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};
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int enumerate_meters_with_metrics(FileLogger &log);
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int enumerate_metrics(const char *meter, FileLogger &log,
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bool read_value = true);
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long long get_metric_value(const char *meter, const char *metric);
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#endif /* TEST_SERVER_METRICS_HELPERS_INCLUDED */
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