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- /* Copyright 2004 Roger Dingledine */
- /* See LICENSE for licensing information */
- /* $Id$ */
- #include "or.h"
- typedef struct link_history_t {
- time_t since;
- unsigned long n_extend_ok;
- unsigned long n_extend_fail;
- } link_history_t;
- typedef struct or_history_t {
- time_t since;
- unsigned long n_conn_ok;
- unsigned long n_conn_fail;
- unsigned long uptime;
- unsigned long downtime;
- time_t up_since;
- time_t down_since;
- strmap_t *link_history_map;
- } or_history_t;
- static strmap_t *history_map;
- /* Return the or_history_t for the named OR, creating it if necessary.
- */
- static or_history_t *get_or_history(const char* nickname)
- {
- or_history_t *hist;
- hist = (or_history_t*) strmap_get(history_map, nickname);
- if (!hist) {
- hist = tor_malloc_zero(sizeof(or_history_t));
- hist->link_history_map = strmap_new();
- hist->since = time(NULL);
- strmap_set(history_map, nickname, hist);
- }
- return hist;
- }
- /* Return the link_history_t for the link from the first named OR to
- * the second, creating it if necessary.
- */
- static link_history_t *get_link_history(const char *from_name,
- const char *to_name)
- {
- or_history_t *orhist;
- link_history_t *lhist;
- orhist = get_or_history(from_name);
- lhist = (link_history_t*) strmap_get(orhist->link_history_map, to_name);
- if (!lhist) {
- lhist = tor_malloc_zero(sizeof(link_history_t));
- lhist->since = time(NULL);
- strmap_set(orhist->link_history_map, to_name, lhist);
- }
- return lhist;
- }
- /* Update an or_history_t object so that its uptime/downtime count is
- * up-to-date.
- */
- static void update_or_history(or_history_t *hist, time_t when)
- {
- assert(hist);
- if (hist->up_since) {
- assert(!hist->down_since);
- hist->uptime += (when - hist->up_since);
- hist->up_since = when;
- } else if (hist->down_since) {
- hist->downtime += (when - hist->down_since);
- hist->down_since = when;
- }
- }
- /* Initialize the static data structures for tracking history.
- */
- void rep_hist_init(void)
- {
- history_map = strmap_new();
- }
- /* Remember that an attempt to connect to the OR 'nickname' failed at
- * 'when'.
- */
- void rep_hist_note_connect_failed(const char* nickname, time_t when)
- {
- or_history_t *hist;
- hist = get_or_history(nickname);
- ++hist->n_conn_fail;
- if (hist->up_since) {
- hist->uptime += (when - hist->up_since);
- hist->up_since = 0;
- }
- if (!hist->down_since)
- hist->down_since = when;
- }
- /* Remember that an attempt to connect to the OR 'nickname' succeeded
- * at 'when'.
- */
- void rep_hist_note_connect_succeeded(const char* nickname, time_t when)
- {
- or_history_t *hist;
- hist = get_or_history(nickname);
- ++hist->n_conn_ok;
- if (hist->down_since) {
- hist->downtime += (when - hist->down_since);
- hist->down_since = 0;
- }
- if (!hist->up_since)
- hist->up_since = when;
- }
- /* Remember that we intentionally closed our connection to the OR
- * 'nickname' at 'when'.
- */
- void rep_hist_note_disconnect(const char* nickname, time_t when)
- {
- or_history_t *hist;
- hist = get_or_history(nickname);
- ++hist->n_conn_ok;
- if (hist->up_since) {
- hist->uptime += (when - hist->up_since);
- hist->up_since = 0;
- }
- }
- /* Remember that our connection to the OR 'nickname' had an error and
- * stopped working at 'when'.
- */
- void rep_hist_note_connection_died(const char* nickname, time_t when)
- {
- or_history_t *hist;
- if(!nickname) {
- /* XXX
- * If conn has no nickname, it's either an OP, or it is an OR
- * which didn't complete its handshake (or did and was unapproved).
- * Ignore it. Is there anything better we could do?
- */
- return;
- }
- hist = get_or_history(nickname);
- if (hist->up_since) {
- hist->uptime += (when - hist->up_since);
- hist->up_since = 0;
- }
- if (!hist->down_since)
- hist->down_since = when;
- }
- /* Remember that we successfully extended from the OR 'from_name' to
- * the OR 'to_name'.
- */
- void rep_hist_note_extend_succeeded(const char *from_name,
- const char *to_name)
- {
- link_history_t *hist;
- /* log_fn(LOG_WARN, "EXTEND SUCCEEDED: %s->%s",from_name,to_name); */
- hist = get_link_history(from_name, to_name);
- ++hist->n_extend_ok;
- }
- /* Remember that we tried to extend from the OR 'from_name' to the OR
- * 'to_name', but failed.
- */
- void rep_hist_note_extend_failed(const char *from_name, const char *to_name)
- {
- link_history_t *hist;
- /* log_fn(LOG_WARN, "EXTEND FAILED: %s->%s",from_name,to_name); */
- hist = get_link_history(from_name, to_name);
- ++hist->n_extend_fail;
- }
- /* Log all the reliability data we have rememberred, with the chosen
- * severity.
- */
- void rep_hist_dump_stats(time_t now, int severity)
- {
- strmap_iter_t *lhist_it;
- strmap_iter_t *orhist_it;
- const char *name1, *name2;
- or_history_t *or_history;
- link_history_t *link_history;
- void *or_history_p, *link_history_p;
- double uptime;
- char buffer[2048];
- int len;
- unsigned long upt, downt;
- log(severity, "--------------- Dumping history information:");
- for (orhist_it = strmap_iter_init(history_map); !strmap_iter_done(orhist_it);
- orhist_it = strmap_iter_next(history_map,orhist_it)) {
- strmap_iter_get(orhist_it, &name1, &or_history_p);
- or_history = (or_history_t*) or_history_p;
- update_or_history(or_history, now);
- upt = or_history->uptime;
- downt = or_history->downtime;
- if (upt+downt) {
- uptime = ((double)upt) / (upt+downt);
- } else {
- uptime=1.0;
- }
- log(severity,
- "OR %s: %ld/%ld good connections; uptime %ld/%ld sec (%.2f%%)",
- name1,
- or_history->n_conn_ok, or_history->n_conn_fail+or_history->n_conn_ok,
- upt, upt+downt, uptime*100.0);
- strcpy(buffer, " Good extend attempts: ");
- len = strlen(buffer);
- for (lhist_it = strmap_iter_init(or_history->link_history_map);
- !strmap_iter_done(lhist_it);
- lhist_it = strmap_iter_next(or_history->link_history_map, lhist_it)) {
- strmap_iter_get(lhist_it, &name2, &link_history_p);
- link_history = (link_history_t*) link_history_p;
- len += snprintf(buffer+len, 2048-len, "%s(%ld/%ld); ", name2,
- link_history->n_extend_ok,
- link_history->n_extend_ok+link_history->n_extend_fail);
- if (len >= 2048) {
- buffer[2047]='\0';
- break;
- }
- }
- log(severity, buffer);
- }
- }
- /*
- Local Variables:
- mode:c
- indent-tabs-mode:nil
- c-basic-offset:2
- End:
- */
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