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/*
This file is part of TALER
Copyright (C) 2014--2021 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-exchange-httpd_metrics.h
* @brief Handle /metrics requests
* @author Christian Grothoff
*/
#ifndef TALER_EXCHANGE_HTTPD_METRICS_H
#define TALER_EXCHANGE_HTTPD_METRICS_H
#include <gnunet/gnunet_util_lib.h>
#include <microhttpd.h>
#include "taler-exchange-httpd.h"
/**
* Request types for which we collect metrics.
*/
enum TEH_MetricTypeRequest
{
TEH_MT_REQUEST_OTHER = 0,
TEH_MT_REQUEST_DEPOSIT = 1,
TEH_MT_REQUEST_WITHDRAW = 2,
TEH_MT_REQUEST_MELT = 3,
TEH_MT_REQUEST_PURSE_CREATE = 4,
TEH_MT_REQUEST_PURSE_MERGE = 5,
TEH_MT_REQUEST_RESERVE_PURSE = 6,
TEH_MT_REQUEST_PURSE_DEPOSIT = 7,
TEH_MT_REQUEST_COUNT = 8 /* MUST BE LAST! */
};
/**
* Cipher types for which we collect signature metrics.
*/
enum TEH_MetricTypeSignature
{
TEH_MT_SIGNATURE_RSA = 0,
TEH_MT_SIGNATURE_CS = 1,
TEH_MT_SIGNATURE_EDDSA = 2,
TEH_MT_SIGNATURE_COUNT = 3
};
/**
* Cipher types for which we collect key exchange metrics.
*/
enum TEH_MetricTypeKeyX
{
TEH_MT_KEYX_ECDH = 0,
TEH_MT_KEYX_COUNT = 1
};
/**
* Number of requests handled of the respective type.
*/
extern unsigned long long TEH_METRICS_num_requests[TEH_MT_REQUEST_COUNT];
/**
* Number of coins withdrawn in a batch-withdraw request
*/
extern unsigned long long TEH_METRICS_batch_withdraw_num_coins;
/**
* Number of serialization errors encountered when
* handling requests of the respective type.
*/
extern unsigned long long TEH_METRICS_num_conflict[TEH_MT_REQUEST_COUNT];
/**
* Number of signatures created by the respecitve cipher.
*/
extern unsigned long long TEH_METRICS_num_signatures[TEH_MT_SIGNATURE_COUNT];
/**
* Number of signatures verified by the respecitve cipher.
*/
extern unsigned long long TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_COUNT];
/**
* Number of key exchnages done with the respective cipher.
*/
extern unsigned long long TEH_METRICS_num_keyexchanges[TEH_MT_KEYX_COUNT];
/**
* Handle a "/metrics" request.
*
* @param rc request context
* @param args array of additional options (must be empty for this function)
* @return MHD result code
*/
MHD_RESULT
TEH_handler_metrics (struct TEH_RequestContext *rc,
const char *const args[]);
#endif
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