Jacob Erlbeck | b6e6bea | 2015-11-09 15:33:44 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) 2015 by Sysmocom s.f.m.c. GmbH |
| 3 | * |
| 4 | * Author: Jacob Erlbeck <jerlbeck@sysmocom.de> |
| 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <osmocom/core/stats.h> |
| 25 | |
| 26 | #include <string.h> |
| 27 | #include <stdint.h> |
| 28 | #include <errno.h> |
| 29 | |
| 30 | #include <osmocom/core/utils.h> |
| 31 | #include <osmocom/core/logging.h> |
| 32 | #include <osmocom/core/rate_ctr.h> |
| 33 | #include <osmocom/core/stat_item.h> |
| 34 | #include <osmocom/core/msgb.h> |
| 35 | |
| 36 | static int osmo_stats_reporter_statsd_send_counter(struct osmo_stats_reporter *srep, |
| 37 | const struct rate_ctr_group *ctrg, |
| 38 | const struct rate_ctr_desc *desc, |
| 39 | int64_t value, int64_t delta); |
| 40 | static int osmo_stats_reporter_statsd_send_item(struct osmo_stats_reporter *srep, |
| 41 | const struct osmo_stat_item_group *statg, |
| 42 | const struct osmo_stat_item_desc *desc, int value); |
| 43 | |
| 44 | struct osmo_stats_reporter *osmo_stats_reporter_create_statsd(const char *name) |
| 45 | { |
| 46 | struct osmo_stats_reporter *srep; |
| 47 | srep = osmo_stats_reporter_alloc(OSMO_STATS_REPORTER_STATSD, name); |
| 48 | |
| 49 | srep->have_net_config = 1; |
| 50 | |
| 51 | srep->open = osmo_stats_reporter_udp_open; |
| 52 | srep->close = osmo_stats_reporter_udp_close; |
| 53 | srep->send_counter = osmo_stats_reporter_statsd_send_counter; |
| 54 | srep->send_item = osmo_stats_reporter_statsd_send_item; |
| 55 | |
| 56 | return srep; |
| 57 | } |
| 58 | |
| 59 | static int osmo_stats_reporter_statsd_send(struct osmo_stats_reporter *srep, |
| 60 | const char *name1, unsigned int index1, const char *name2, int value, |
| 61 | const char *unit) |
| 62 | { |
| 63 | char *buf; |
| 64 | int buf_size; |
| 65 | int nchars, rc = 0; |
| 66 | char *fmt = NULL; |
| 67 | char *prefix = srep->name_prefix; |
| 68 | int old_len = msgb_length(srep->buffer); |
| 69 | |
| 70 | if (prefix) { |
| 71 | if (name1) { |
| 72 | if (index1 != 0) |
| 73 | fmt = "%1$s.%2$s.%6$u.%3$s:%4$d|%5$s"; |
| 74 | else |
| 75 | fmt = "%1$s.%2$s.%3$s:%4$d|%5$s"; |
| 76 | } else { |
| 77 | fmt = "%1$s.%2$0.0s%3$s:%4$d|%5$s"; |
| 78 | } |
| 79 | } else { |
| 80 | prefix = ""; |
| 81 | if (name1) { |
| 82 | if (index1 != 0) |
| 83 | fmt = "%1$s%2$s.%6$u.%3$s:%4$d|%5$s"; |
| 84 | else |
| 85 | fmt = "%1$s%2$s.%3$s:%4$d|%5$s"; |
| 86 | } else { |
| 87 | fmt = "%1$s%2$0.0s%3$s:%4$d|%5$s"; |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | if (srep->agg_enabled) { |
| 92 | if (msgb_length(srep->buffer) > 0 && |
| 93 | msgb_tailroom(srep->buffer) > 0) |
| 94 | { |
| 95 | msgb_put_u8(srep->buffer, '\n'); |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | buf = (char *)msgb_put(srep->buffer, 0); |
| 100 | buf_size = msgb_tailroom(srep->buffer); |
| 101 | |
| 102 | nchars = snprintf(buf, buf_size, fmt, |
| 103 | prefix, name1, name2, |
| 104 | value, unit, index1); |
| 105 | |
| 106 | if (nchars >= buf_size) { |
| 107 | /* Truncated */ |
| 108 | /* Restore original buffer (without trailing LF) */ |
| 109 | msgb_trim(srep->buffer, old_len); |
| 110 | /* Send it */ |
| 111 | rc = osmo_stats_reporter_send_buffer(srep); |
| 112 | |
| 113 | /* Try again */ |
| 114 | buf = (char *)msgb_put(srep->buffer, 0); |
| 115 | buf_size = msgb_tailroom(srep->buffer); |
| 116 | |
| 117 | nchars = snprintf(buf, buf_size, fmt, |
| 118 | prefix, name1, name2, |
| 119 | value, unit, index1); |
| 120 | |
| 121 | if (nchars >= buf_size) |
| 122 | return -EMSGSIZE; |
| 123 | } |
| 124 | |
| 125 | if (nchars > 0) |
| 126 | msgb_trim(srep->buffer, msgb_length(srep->buffer) + nchars); |
| 127 | |
| 128 | if (!srep->agg_enabled) |
| 129 | rc = osmo_stats_reporter_send_buffer(srep); |
| 130 | |
| 131 | return rc; |
| 132 | } |
| 133 | |
| 134 | static int osmo_stats_reporter_statsd_send_counter(struct osmo_stats_reporter *srep, |
| 135 | const struct rate_ctr_group *ctrg, |
| 136 | const struct rate_ctr_desc *desc, |
| 137 | int64_t value, int64_t delta) |
| 138 | { |
| 139 | if (ctrg) |
| 140 | return osmo_stats_reporter_statsd_send(srep, |
| 141 | ctrg->desc->group_name_prefix, |
| 142 | ctrg->idx, |
| 143 | desc->name, delta, "c"); |
| 144 | else |
| 145 | return osmo_stats_reporter_statsd_send(srep, |
| 146 | NULL, 0, |
| 147 | desc->name, delta, "c"); |
| 148 | } |
| 149 | |
| 150 | static int osmo_stats_reporter_statsd_send_item(struct osmo_stats_reporter *srep, |
| 151 | const struct osmo_stat_item_group *statg, |
| 152 | const struct osmo_stat_item_desc *desc, int value) |
| 153 | { |
Holger Hans Peter Freyther | 5ab8e2c | 2015-12-17 14:13:22 +0100 | [diff] [blame] | 154 | const char *unit = desc->unit; |
Jacob Erlbeck | af5bad5 | 2015-11-27 18:54:58 +0100 | [diff] [blame] | 155 | |
| 156 | if (unit == OSMO_STAT_ITEM_NO_UNIT) { |
| 157 | unit = "g"; |
| 158 | if (value < 0) |
| 159 | osmo_stats_reporter_statsd_send(srep, |
| 160 | statg->desc->group_name_prefix, |
| 161 | statg->idx, |
| 162 | desc->name, 0, unit); |
| 163 | } |
Jacob Erlbeck | b6e6bea | 2015-11-09 15:33:44 +0100 | [diff] [blame] | 164 | return osmo_stats_reporter_statsd_send(srep, |
| 165 | statg->desc->group_name_prefix, |
| 166 | statg->idx, |
Jacob Erlbeck | af5bad5 | 2015-11-27 18:54:58 +0100 | [diff] [blame] | 167 | desc->name, value, unit); |
Jacob Erlbeck | b6e6bea | 2015-11-09 15:33:44 +0100 | [diff] [blame] | 168 | } |