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-rw-r--r--src/exchange/taler-exchange-httpd_metrics.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/src/exchange/taler-exchange-httpd_metrics.c b/src/exchange/taler-exchange-httpd_metrics.c
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index 000000000..1542801fe
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+++ b/src/exchange/taler-exchange-httpd_metrics.c
@@ -0,0 +1,165 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2015-2021 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.c
+ * @brief Handle /metrics requests
+ * @author Christian Grothoff
+ */
+#include "platform.h"
+#include <gnunet/gnunet_json_lib.h>
+#include "taler_dbevents.h"
+#include "taler-exchange-httpd_responses.h"
+#include "taler-exchange-httpd_keys.h"
+#include "taler-exchange-httpd_metrics.h"
+#include "taler_json_lib.h"
+#include "taler_mhd_lib.h"
+#include <jansson.h>
+
+
+unsigned long long TEH_METRICS_num_requests[TEH_MT_REQUEST_COUNT];
+
+unsigned long long TEH_METRICS_batch_withdraw_num_coins;
+
+unsigned long long TEH_METRICS_num_conflict[TEH_MT_REQUEST_COUNT];
+
+unsigned long long TEH_METRICS_num_signatures[TEH_MT_SIGNATURE_COUNT];
+
+unsigned long long TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_COUNT];
+
+unsigned long long TEH_METRICS_num_keyexchanges[TEH_MT_KEYX_COUNT];
+
+unsigned long long TEH_METRICS_num_success[TEH_MT_SUCCESS_COUNT];
+
+
+MHD_RESULT
+TEH_handler_metrics (struct TEH_RequestContext *rc,
+ const char *const args[])
+{
+ char *reply;
+ struct MHD_Response *resp;
+ MHD_RESULT ret;
+
+ (void) args;
+ GNUNET_asprintf (&reply,
+ "taler_exchange_success_transactions{type=\"%s\"} %llu\n"
+ "taler_exchange_success_transactions{type=\"%s\"} %llu\n"
+ "taler_exchange_success_transactions{type=\"%s\"} %llu\n"
+ "taler_exchange_success_transactions{type=\"%s\"} %llu\n"
+ "taler_exchange_success_transactions{type=\"%s\"} %llu\n"
+ "# HELP taler_exchange_serialization_failures "
+ " number of database serialization errors by type\n"
+ "# TYPE taler_exchange_serialization_failures counter\n"
+ "taler_exchange_serialization_failures{type=\"%s\"} %llu\n"
+ "taler_exchange_serialization_failures{type=\"%s\"} %llu\n"
+ "taler_exchange_serialization_failures{type=\"%s\"} %llu\n"
+ "taler_exchange_serialization_failures{type=\"%s\"} %llu\n"
+ "# HELP taler_exchange_received_requests "
+ " number of received requests by type\n"
+ "# TYPE taler_exchange_received_requests counter\n"
+ "taler_exchange_received_requests{type=\"%s\"} %llu\n"
+ "taler_exchange_received_requests{type=\"%s\"} %llu\n"
+ "taler_exchange_received_requests{type=\"%s\"} %llu\n"
+ "taler_exchange_received_requests{type=\"%s\"} %llu\n"
+ "taler_exchange_idempotent_requests{type=\"%s\"} %llu\n"
+#if NOT_YET_IMPLEMENTED
+ "taler_exchange_idempotent_requests{type=\"%s\"} %llu\n"
+ "taler_exchange_idempotent_requests{type=\"%s\"} %llu\n"
+#endif
+ "taler_exchange_idempotent_requests{type=\"%s\"} %llu\n"
+ "# HELP taler_exchange_num_signatures "
+ " number of signatures created by cipher\n"
+ "# TYPE taler_exchange_num_signatures counter\n"
+ "taler_exchange_num_signatures{type=\"%s\"} %llu\n"
+ "taler_exchange_num_signatures{type=\"%s\"} %llu\n"
+ "taler_exchange_num_signatures{type=\"%s\"} %llu\n"
+ "# HELP taler_exchange_num_signature_verifications "
+ " number of signatures verified by cipher\n"
+ "# TYPE taler_exchange_num_signature_verifications counter\n"
+ "taler_exchange_num_signature_verifications{type=\"%s\"} %llu\n"
+ "taler_exchange_num_signature_verifications{type=\"%s\"} %llu\n"
+ "taler_exchange_num_signature_verifications{type=\"%s\"} %llu\n"
+ "# HELP taler_exchange_num_keyexchanges "
+ " number of key exchanges done by cipher\n"
+ "# TYPE taler_exchange_num_keyexchanges counter\n"
+ "taler_exchange_num_keyexchanges{type=\"%s\"} %llu\n"
+ "# HELP taler_exchange_batch_withdraw_num_coins "
+ " number of coins withdrawn in a batch-withdraw request\n"
+ "# TYPE taler_exchange_batch_withdraw_num_coins counter\n"
+ "taler_exchange_batch_withdraw_num_coins{} %llu\n",
+ "deposit",
+ TEH_METRICS_num_success[TEH_MT_SUCCESS_DEPOSIT],
+ "withdraw",
+ TEH_METRICS_num_success[TEH_MT_SUCCESS_WITHDRAW],
+ "batch-withdraw",
+ TEH_METRICS_num_success[TEH_MT_SUCCESS_BATCH_WITHDRAW],
+ "melt",
+ TEH_METRICS_num_success[TEH_MT_SUCCESS_MELT],
+ "refresh-reveal",
+ TEH_METRICS_num_success[TEH_MT_SUCCESS_REFRESH_REVEAL],
+ "other",
+ TEH_METRICS_num_conflict[TEH_MT_REQUEST_OTHER],
+ "deposit",
+ TEH_METRICS_num_conflict[TEH_MT_REQUEST_DEPOSIT],
+ "withdraw",
+ TEH_METRICS_num_conflict[TEH_MT_REQUEST_WITHDRAW],
+ "melt",
+ TEH_METRICS_num_conflict[TEH_MT_REQUEST_MELT],
+ "other",
+ TEH_METRICS_num_requests[TEH_MT_REQUEST_OTHER],
+ "deposit",
+ TEH_METRICS_num_requests[TEH_MT_REQUEST_DEPOSIT],
+ "withdraw",
+ TEH_METRICS_num_requests[TEH_MT_REQUEST_WITHDRAW],
+ "melt",
+ TEH_METRICS_num_requests[TEH_MT_REQUEST_MELT],
+ "withdraw",
+ TEH_METRICS_num_requests[TEH_MT_REQUEST_IDEMPOTENT_WITHDRAW],
+#if NOT_YET_IMPLEMENTED
+ "deposit",
+ TEH_METRICS_num_requests[TEH_MT_REQUEST_IDEMPOTENT_DEPOSIT],
+ "melt",
+ TEH_METRICS_num_requests[TEH_MT_REQUEST_IDEMPOTENT_MELT],
+#endif
+ "batch-withdraw",
+ TEH_METRICS_num_requests[
+ TEH_MT_REQUEST_IDEMPOTENT_BATCH_WITHDRAW],
+ "rsa",
+ TEH_METRICS_num_signatures[TEH_MT_SIGNATURE_RSA],
+ "cs",
+ TEH_METRICS_num_signatures[TEH_MT_SIGNATURE_CS],
+ "eddsa",
+ TEH_METRICS_num_signatures[TEH_MT_SIGNATURE_EDDSA],
+ "rsa",
+ TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_RSA],
+ "cs",
+ TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_CS],
+ "eddsa",
+ TEH_METRICS_num_verifications[TEH_MT_SIGNATURE_EDDSA],
+ "ecdh",
+ TEH_METRICS_num_keyexchanges[TEH_MT_KEYX_ECDH],
+ TEH_METRICS_batch_withdraw_num_coins);
+ resp = MHD_create_response_from_buffer (strlen (reply),
+ reply,
+ MHD_RESPMEM_MUST_FREE);
+ ret = MHD_queue_response (rc->connection,
+ MHD_HTTP_OK,
+ resp);
+ MHD_destroy_response (resp);
+ return ret;
+}
+
+
+/* end of taler-exchange-httpd_metrics.c */