| /* |
| * (C) 2015 by sysmocom - s.f.m.c. GmbH |
| * Author: Jacob Erlbeck <jerlbeck@sysmocom.de> |
| * All Rights Reserved |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program 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 General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| */ |
| |
| /*! \addtogroup stats |
| * @{ |
| * \file stats_statsd.c */ |
| |
| #include "config.h" |
| #if !defined(EMBEDDED) |
| |
| #include <osmocom/core/stats.h> |
| |
| #include <string.h> |
| #include <stdint.h> |
| #include <errno.h> |
| |
| #include <osmocom/core/utils.h> |
| #include <osmocom/core/logging.h> |
| #include <osmocom/core/rate_ctr.h> |
| #include <osmocom/core/stat_item.h> |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/stats.h> |
| |
| static int osmo_stats_reporter_statsd_send_counter(struct osmo_stats_reporter *srep, |
| const struct rate_ctr_group *ctrg, |
| const struct rate_ctr_desc *desc, |
| int64_t value, int64_t delta); |
| static int osmo_stats_reporter_statsd_send_item(struct osmo_stats_reporter *srep, |
| const struct osmo_stat_item_group *statg, |
| const struct osmo_stat_item_desc *desc, int64_t value); |
| |
| /*! Create a stats_reporter reporting to statsd. This creates a stats_reporter |
| * instance which reports the related statistics data to statsd. |
| * \param[in] name Name of the to-be-created stats_reporter |
| * \returns stats_reporter on success; NULL on error */ |
| struct osmo_stats_reporter *osmo_stats_reporter_create_statsd(const char *name) |
| { |
| struct osmo_stats_reporter *srep; |
| srep = osmo_stats_reporter_alloc(OSMO_STATS_REPORTER_STATSD, name); |
| |
| srep->have_net_config = 1; |
| |
| srep->open = osmo_stats_reporter_udp_open; |
| srep->close = osmo_stats_reporter_udp_close; |
| srep->send_counter = osmo_stats_reporter_statsd_send_counter; |
| srep->send_item = osmo_stats_reporter_statsd_send_item; |
| |
| return srep; |
| } |
| |
| /*! Replace all illegal ':' in the stats name, but not when used as value seperator. |
| * ':' is used as seperator between the name and the value in the statsd protocol. |
| * \param[inout] buf is a null terminated string containing name, value, unit. */ |
| static void osmo_stats_reporter_sanitize_name(char *buf) |
| { |
| /* e.g. msc.loc_update_type:normal:1|c -> msc.loc_update_type.normal:1|c |
| * last is the seperator between name and value */ |
| char *last = strrchr(buf, ':'); |
| char *tmp = strchr(buf, ':'); |
| |
| if (!last) |
| return; |
| |
| while (tmp < last) { |
| *tmp = '.'; |
| tmp = strchr(buf, ':'); |
| } |
| } |
| |
| static int osmo_stats_reporter_statsd_send(struct osmo_stats_reporter *srep, |
| const char *name1, unsigned int index1, const char *name2, int64_t value, |
| const char *unit) |
| { |
| char *buf; |
| int buf_size; |
| int nchars, rc = 0; |
| char *fmt = NULL; |
| char *prefix = srep->name_prefix; |
| int old_len = msgb_length(srep->buffer); |
| |
| if (prefix) { |
| if (name1) { |
| if (index1 != 0) |
| fmt = "%1$s.%2$s.%6$u.%3$s:%4$d|%5$s"; |
| else |
| fmt = "%1$s.%2$s.%3$s:%4$d|%5$s"; |
| } else { |
| fmt = "%1$s.%2$0.0s%3$s:%4$d|%5$s"; |
| } |
| } else { |
| prefix = ""; |
| if (name1) { |
| if (index1 != 0) |
| fmt = "%1$s%2$s.%6$u.%3$s:%4$d|%5$s"; |
| else |
| fmt = "%1$s%2$s.%3$s:%4$d|%5$s"; |
| } else { |
| fmt = "%1$s%2$0.0s%3$s:%4$d|%5$s"; |
| } |
| } |
| |
| if (srep->agg_enabled) { |
| if (msgb_length(srep->buffer) > 0 && |
| msgb_tailroom(srep->buffer) > 0) |
| { |
| msgb_put_u8(srep->buffer, '\n'); |
| } |
| } |
| |
| buf = (char *)msgb_put(srep->buffer, 0); |
| buf_size = msgb_tailroom(srep->buffer); |
| |
| nchars = snprintf(buf, buf_size, fmt, |
| prefix, name1, name2, |
| value, unit, index1); |
| |
| if (nchars >= buf_size) { |
| /* Truncated */ |
| /* Restore original buffer (without trailing LF) */ |
| msgb_trim(srep->buffer, old_len); |
| /* Send it */ |
| rc = osmo_stats_reporter_send_buffer(srep); |
| |
| /* Try again */ |
| buf = (char *)msgb_put(srep->buffer, 0); |
| buf_size = msgb_tailroom(srep->buffer); |
| |
| nchars = snprintf(buf, buf_size, fmt, |
| prefix, name1, name2, |
| value, unit, index1); |
| |
| if (nchars >= buf_size) |
| return -EMSGSIZE; |
| } |
| |
| if (nchars > 0) { |
| osmo_stats_reporter_sanitize_name(buf); |
| msgb_trim(srep->buffer, msgb_length(srep->buffer) + nchars); |
| } |
| |
| if (!srep->agg_enabled) |
| rc = osmo_stats_reporter_send_buffer(srep); |
| |
| return rc; |
| } |
| |
| static int osmo_stats_reporter_statsd_send_counter(struct osmo_stats_reporter *srep, |
| const struct rate_ctr_group *ctrg, |
| const struct rate_ctr_desc *desc, |
| int64_t value, int64_t delta) |
| { |
| if (ctrg) |
| return osmo_stats_reporter_statsd_send(srep, |
| ctrg->desc->group_name_prefix, |
| ctrg->idx, |
| desc->name, delta, "c"); |
| else |
| return osmo_stats_reporter_statsd_send(srep, |
| NULL, 0, |
| desc->name, delta, "c"); |
| } |
| |
| static int osmo_stats_reporter_statsd_send_item(struct osmo_stats_reporter *srep, |
| const struct osmo_stat_item_group *statg, |
| const struct osmo_stat_item_desc *desc, int64_t value) |
| { |
| const char *unit = desc->unit; |
| |
| if (unit == OSMO_STAT_ITEM_NO_UNIT) { |
| unit = "g"; |
| if (value < 0) |
| osmo_stats_reporter_statsd_send(srep, |
| statg->desc->group_name_prefix, |
| statg->idx, |
| desc->name, 0, unit); |
| } |
| return osmo_stats_reporter_statsd_send(srep, |
| statg->desc->group_name_prefix, |
| statg->idx, |
| desc->name, value, unit); |
| } |
| #endif /* !EMBEDDED */ |
| |
| /* @} */ |