Annotation of embedaddon/bmon/src/out_rrd.c, revision 1.1
1.1 ! misho 1: /*
! 2: * out_rrd.c RRD Output
! 3: *
! 4: * Copyright (c) 2001-2005 Thomas Graf <tgraf@suug.ch>
! 5: *
! 6: * Permission is hereby granted, free of charge, to any person obtaining a
! 7: * copy of this software and associated documentation files (the "Software"),
! 8: * to deal in the Software without restriction, including without limitation
! 9: * the rights to use, copy, modify, merge, publish, distribute, sublicense,
! 10: * and/or sell copies of the Software, and to permit persons to whom the
! 11: * Software is furnished to do so, subject to the following conditions:
! 12: *
! 13: * The above copyright notice and this permission notice shall be included
! 14: * in all copies or substantial portions of the Software.
! 15: *
! 16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
! 17: * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
! 18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
! 19: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
! 20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
! 21: * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
! 22: * DEALINGS IN THE SOFTWARE.
! 23: */
! 24:
! 25: #include <bmon/bmon.h>
! 26: #include <bmon/node.h>
! 27: #include <bmon/output.h>
! 28: #include <bmon/graph.h>
! 29: #include <bmon/input.h>
! 30: #include <bmon/utils.h>
! 31: #include <inttypes.h>
! 32:
! 33: #define MAX_RRA 128
! 34:
! 35: static const char *c_path = "./";
! 36: static char *c_step = "1";
! 37: static char *c_heartbeat = "2";
! 38: static char *c_rra[MAX_RRA];
! 39: static int c_rra_index;
! 40: static int c_update_interval = 1;
! 41:
! 42: static void create_rrd(char *file, item_t *it)
! 43: {
! 44: char *argv[256];
! 45: char nows[32];
! 46: int i, m, ul;
! 47:
! 48: memset(argv, 0, sizeof(argv));
! 49:
! 50: snprintf(nows, sizeof(nows), "%lld", (unsigned long long) (time(0) - 1));
! 51:
! 52: argv[0] = "create";
! 53: argv[1] = file;
! 54: argv[2] = "--start";
! 55: argv[3] = nows;
! 56: argv[4] = "--step";
! 57: argv[5] = c_step;
! 58:
! 59: i = 6;
! 60:
! 61: for (m = 0; m < ATTR_HASH_MAX; m++) {
! 62: stat_attr_t *a;
! 63: for (a = it->i_attrs[m]; a; a = a->a_next) {
! 64: char ds[128];
! 65: if (i >= (253 - c_rra_index))
! 66: goto overflow;
! 67: snprintf(ds, sizeof(ds), "DS:%s_rx:%s:%s:U:U",
! 68: type2name(a->a_type),
! 69: a->a_flags & ATTR_FLAG_IS_RATE ? "GAUGE" : "COUNTER",
! 70: c_heartbeat);
! 71: argv[i++] = strdup(ds);
! 72:
! 73: if (i >= (253 - c_rra_index))
! 74: goto overflow;
! 75: snprintf(ds, sizeof(ds), "DS:%s_tx:%s:%s:U:U",
! 76: type2name(a->a_type),
! 77: a->a_flags & ATTR_FLAG_IS_RATE ? "GAUGE" : "COUNTER",
! 78: c_heartbeat);
! 79: argv[i++] = strdup(ds);
! 80: }
! 81: }
! 82:
! 83: ul = i;
! 84:
! 85: if (i + c_rra_index >= 255)
! 86: goto overflow;
! 87:
! 88: for (m = 0; m < c_rra_index; m++)
! 89: argv[i++] = c_rra[m];
! 90:
! 91: optind = 0; /* What a nice undocumented precondition */
! 92: opterr = 0;
! 93:
! 94: if (rrd_create(i, argv) < 0)
! 95: fprintf(stderr, "rrd_create failed: %s\n", rrd_get_error());
! 96:
! 97: for (i = 6; i < ul && argv[i]; i++)
! 98: free(argv[i]);
! 99:
! 100: return;
! 101:
! 102: overflow:
! 103: quit("Argument overflow, blame the RRD API\n");
! 104: }
! 105:
! 106: static void update_rrd(char *file, item_t *it)
! 107: {
! 108: char *argv[6];
! 109: char template[256];
! 110: char data[1024];
! 111: int m;
! 112:
! 113: memset(argv, 0, sizeof(argv));
! 114:
! 115: argv[0] = "update";
! 116: argv[1] = file;
! 117: argv[2] = "--template";
! 118:
! 119: memset(template, 0, sizeof(template));
! 120:
! 121: for (m = 0; m < ATTR_HASH_MAX; m++) {
! 122: stat_attr_t *a;
! 123: for (a = it->i_attrs[m]; a; a = a->a_next) {
! 124: if (template[0])
! 125: strncat(template, ":",
! 126: sizeof(template) - strlen(template) - 1);
! 127: strncat(template, type2name(a->a_type),
! 128: sizeof(template) - strlen(template) - 1);
! 129: strncat(template, "_rx",
! 130: sizeof(template) - strlen(template) - 1);
! 131: strncat(template, ":",
! 132: sizeof(template) - strlen(template) - 1);
! 133: strncat(template, type2name(a->a_type),
! 134: sizeof(template) - strlen(template) - 1);
! 135: strncat(template, "_tx",
! 136: sizeof(template) - strlen(template) - 1);
! 137: }
! 138: }
! 139:
! 140: argv[3] = template;
! 141:
! 142: snprintf(data, sizeof(data), "%lld",
! 143: rtiming.rt_last_read.tv_sec);
! 144:
! 145: for (m = 0; m < ATTR_HASH_MAX; m++) {
! 146: stat_attr_t *a;
! 147: for (a = it->i_attrs[m]; a; a = a->a_next) {
! 148: char valuepair[64];
! 149: snprintf(valuepair, sizeof(valuepair),
! 150: "%s%lld:%lld",
! 151: data[0] ? ":" : "", attr_get_rx(a),
! 152: attr_get_tx(a));
! 153:
! 154: strncat(data, valuepair,
! 155: sizeof(data) - strlen(data) - 1);
! 156: }
! 157: }
! 158:
! 159: argv[4] = data;
! 160:
! 161: for (m = 0; m < 5; m++)
! 162: printf("%s ", argv[m]);
! 163: printf("\n");
! 164:
! 165: optind = 0; /* What a nice undocumented precondition */
! 166: opterr = 0;
! 167:
! 168: rrd_update(5, argv);
! 169: }
! 170:
! 171: static void write_per_item(item_t *it, void *arg)
! 172: {
! 173: node_t *node = (node_t *) arg;
! 174: char file[FILENAME_MAX];
! 175:
! 176: snprintf(file, sizeof(file), "%s/%s_%d.rrd", c_path, node->n_name, it->i_index);
! 177:
! 178: if (access(file, W_OK) != 0)
! 179: create_rrd(file, it);
! 180:
! 181: if (access(file, W_OK) == 0)
! 182: update_rrd(file, it);
! 183: }
! 184:
! 185: static void write_per_node(node_t *node, void *arg)
! 186: {
! 187: foreach_item(node, write_per_item, (void *) node);
! 188: }
! 189:
! 190: void rrd_draw(void)
! 191: {
! 192: static int rem = 1;
! 193:
! 194: if (--rem)
! 195: return;
! 196: else
! 197: rem = c_update_interval;
! 198:
! 199: foreach_node(write_per_node, NULL);
! 200: }
! 201:
! 202: static void print_module_help(void)
! 203: {
! 204: printf(
! 205: "RRD - RRD Output\n" \
! 206: "\n" \
! 207: " Writes updated to RRD databases. Databases are created if needed\n" \
! 208: " and non-existent\n" \
! 209: " Author: Thomas Graf <tgraf@suug.ch>\n" \
! 210: "\n" \
! 211: " Options:\n" \
! 212: " path=PATH Output directory\n" \
! 213: " step=SECS Interval RRD expects updates (default: 1 second)\n" \
! 214: " heartbeat=SECS Maximum interval until RRD throws away an\n" \
! 215: " update (default: 2 seconds)\n" \
! 216: " interval=NUM Update interval in read interval cycles\n" \
! 217: " rra=RRA_DEF RRA definition (default: RRA:AVERAGE:0.5:1:86400)\n");
! 218: }
! 219:
! 220: static void rrd_set_opts(tv_t *attrs)
! 221: {
! 222: static int first_rra = 1;
! 223:
! 224: while (attrs) {
! 225: if (!strcasecmp(attrs->type, "path") && attrs->value)
! 226: c_path = attrs->value;
! 227: else if (!strcasecmp(attrs->type, "step") && attrs->value)
! 228: c_step = attrs->value;
! 229: else if (!strcasecmp(attrs->type, "heartbeat") && attrs->value)
! 230: c_heartbeat = attrs->value;
! 231: else if (!strcasecmp(attrs->type, "interval") && attrs->value)
! 232: c_update_interval = strtol(attrs->value, NULL, 0);
! 233: else if (!strcasecmp(attrs->type, "rra") && attrs->value) {
! 234: if (first_rra) {
! 235: c_rra_index = 0;
! 236: first_rra = 0;
! 237: }
! 238: if (c_rra_index < MAX_RRA)
! 239: c_rra[c_rra_index++] = attrs->value;
! 240: } else if (!strcasecmp(attrs->type, "help")) {
! 241: print_module_help();
! 242: exit(0);
! 243: }
! 244:
! 245: attrs = attrs->next;
! 246: }
! 247: }
! 248:
! 249: static int rrd_probe(void)
! 250: {
! 251: return 1;
! 252: }
! 253:
! 254: static struct output_module rrd_ops = {
! 255: .om_name = "rrd",
! 256: .om_draw = rrd_draw,
! 257: .om_set_opts = rrd_set_opts,
! 258: .om_probe = rrd_probe,
! 259: };
! 260:
! 261: static void __init save_init(void)
! 262: {
! 263: c_rra[0] = "RRA:AVERAGE:0.5:1:86400";
! 264: c_rra_index = 1;
! 265: register_secondary_output_module(&rrd_ops);
! 266: }
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