mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-10 13:13:44 +01:00
Split bidi connection-stats code into a new C file.
This commit is contained in:
parent
1a4e475d5d
commit
50bf2520b3
@ -105,6 +105,7 @@
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#include "feature/relay/routermode.h"
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#include "feature/rend/rendclient.h"
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#include "feature/rend/rendcommon.h"
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#include "feature/stats/connstats.h"
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#include "feature/stats/rephist.h"
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#include "feature/stats/bwhist.h"
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#include "lib/crypt_ops/crypto_util.h"
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@ -95,6 +95,7 @@
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#include "feature/rend/rendservice.h"
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#include "feature/stats/geoip_stats.h"
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#include "feature/stats/predict_ports.h"
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#include "feature/stats/connstats.h"
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#include "feature/stats/rephist.h"
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#include "lib/buf/buffers.h"
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#include "lib/crypt_ops/crypto_rand.h"
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@ -36,6 +36,7 @@
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#include "feature/nodelist/nickname.h"
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#include "feature/stats/geoip_stats.h"
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#include "feature/stats/predict_ports.h"
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#include "feature/stats/connstats.h"
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#include "feature/stats/rephist.h"
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#include "feature/dirauth/authmode.h"
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235
src/feature/stats/connstats.c
Normal file
235
src/feature/stats/connstats.c
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@ -0,0 +1,235 @@
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/* Copyright (c) 2001 Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2020, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* @file connstats.c
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* @brief Count bidirectional vs one-way connections.
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*
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* Connection statistics, used by relays to count connections, and track
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* one-way and bidirectional connections.
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**/
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#include "orconfig.h"
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#include "core/or/or.h"
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#include "feature/stats/connstats.h"
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#include "app/config/config.h"
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/** Start of the current connection stats interval or 0 if we're not
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* collecting connection statistics. */
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static time_t start_of_conn_stats_interval;
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/** Initialize connection stats. */
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void
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rep_hist_conn_stats_init(time_t now)
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{
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start_of_conn_stats_interval = now;
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}
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/* Count connections that we read and wrote less than these many bytes
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* from/to as below threshold. */
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#define BIDI_THRESHOLD 20480
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/* Count connections that we read or wrote at least this factor as many
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* bytes from/to than we wrote or read to/from as mostly reading or
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* writing. */
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#define BIDI_FACTOR 10
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/* Interval length in seconds for considering read and written bytes for
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* connection stats. */
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#define BIDI_INTERVAL 10
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/** Start of next BIDI_INTERVAL second interval. */
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static time_t bidi_next_interval = 0;
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/** Number of connections that we read and wrote less than BIDI_THRESHOLD
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* bytes from/to in BIDI_INTERVAL seconds. */
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static uint32_t below_threshold = 0;
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/** Number of connections that we read at least BIDI_FACTOR times more
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* bytes from than we wrote to in BIDI_INTERVAL seconds. */
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static uint32_t mostly_read = 0;
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/** Number of connections that we wrote at least BIDI_FACTOR times more
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* bytes to than we read from in BIDI_INTERVAL seconds. */
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static uint32_t mostly_written = 0;
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/** Number of connections that we read and wrote at least BIDI_THRESHOLD
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* bytes from/to, but not BIDI_FACTOR times more in either direction in
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* BIDI_INTERVAL seconds. */
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static uint32_t both_read_and_written = 0;
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/** Entry in a map from connection ID to the number of read and written
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* bytes on this connection in a BIDI_INTERVAL second interval. */
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typedef struct bidi_map_entry_t {
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HT_ENTRY(bidi_map_entry_t) node;
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uint64_t conn_id; /**< Connection ID */
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size_t read; /**< Number of read bytes */
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size_t written; /**< Number of written bytes */
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} bidi_map_entry_t;
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/** Map of OR connections together with the number of read and written
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* bytes in the current BIDI_INTERVAL second interval. */
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static HT_HEAD(bidimap, bidi_map_entry_t) bidi_map =
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HT_INITIALIZER();
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static int
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bidi_map_ent_eq(const bidi_map_entry_t *a, const bidi_map_entry_t *b)
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{
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return a->conn_id == b->conn_id;
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}
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/* DOCDOC bidi_map_ent_hash */
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static unsigned
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bidi_map_ent_hash(const bidi_map_entry_t *entry)
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{
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return (unsigned) entry->conn_id;
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}
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HT_PROTOTYPE(bidimap, bidi_map_entry_t, node, bidi_map_ent_hash,
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bidi_map_ent_eq);
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HT_GENERATE2(bidimap, bidi_map_entry_t, node, bidi_map_ent_hash,
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bidi_map_ent_eq, 0.6, tor_reallocarray_, tor_free_);
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/** Release all storage held in connstats.c */
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void
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bidi_map_free_all(void)
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{
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bidi_map_entry_t **ptr, **next, *ent;
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for (ptr = HT_START(bidimap, &bidi_map); ptr; ptr = next) {
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ent = *ptr;
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next = HT_NEXT_RMV(bidimap, &bidi_map, ptr);
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tor_free(ent);
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}
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HT_CLEAR(bidimap, &bidi_map);
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}
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/** Reset counters for conn statistics. */
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void
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rep_hist_reset_conn_stats(time_t now)
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{
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start_of_conn_stats_interval = now;
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below_threshold = 0;
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mostly_read = 0;
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mostly_written = 0;
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both_read_and_written = 0;
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bidi_map_free_all();
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}
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/** Stop collecting connection stats in a way that we can re-start doing
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* so in rep_hist_conn_stats_init(). */
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void
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rep_hist_conn_stats_term(void)
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{
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rep_hist_reset_conn_stats(0);
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}
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/** We read <b>num_read</b> bytes and wrote <b>num_written</b> from/to OR
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* connection <b>conn_id</b> in second <b>when</b>. If this is the first
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* observation in a new interval, sum up the last observations. Add bytes
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* for this connection. */
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void
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rep_hist_note_or_conn_bytes(uint64_t conn_id, size_t num_read,
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size_t num_written, time_t when)
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{
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if (!start_of_conn_stats_interval)
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return;
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/* Initialize */
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if (bidi_next_interval == 0)
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bidi_next_interval = when + BIDI_INTERVAL;
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/* Sum up last period's statistics */
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if (when >= bidi_next_interval) {
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bidi_map_entry_t **ptr, **next, *ent;
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for (ptr = HT_START(bidimap, &bidi_map); ptr; ptr = next) {
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ent = *ptr;
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if (ent->read + ent->written < BIDI_THRESHOLD)
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below_threshold++;
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else if (ent->read >= ent->written * BIDI_FACTOR)
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mostly_read++;
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else if (ent->written >= ent->read * BIDI_FACTOR)
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mostly_written++;
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else
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both_read_and_written++;
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next = HT_NEXT_RMV(bidimap, &bidi_map, ptr);
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tor_free(ent);
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}
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while (when >= bidi_next_interval)
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bidi_next_interval += BIDI_INTERVAL;
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log_info(LD_GENERAL, "%d below threshold, %d mostly read, "
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"%d mostly written, %d both read and written.",
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below_threshold, mostly_read, mostly_written,
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both_read_and_written);
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}
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/* Add this connection's bytes. */
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if (num_read > 0 || num_written > 0) {
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bidi_map_entry_t *entry, lookup;
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lookup.conn_id = conn_id;
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entry = HT_FIND(bidimap, &bidi_map, &lookup);
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if (entry) {
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entry->written += num_written;
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entry->read += num_read;
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} else {
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entry = tor_malloc_zero(sizeof(bidi_map_entry_t));
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entry->conn_id = conn_id;
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entry->written = num_written;
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entry->read = num_read;
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HT_INSERT(bidimap, &bidi_map, entry);
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}
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}
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}
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/** Return a newly allocated string containing the connection statistics
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* until <b>now</b>, or NULL if we're not collecting conn stats. Caller must
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* ensure start_of_conn_stats_interval is in the past. */
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char *
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rep_hist_format_conn_stats(time_t now)
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{
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char *result, written[ISO_TIME_LEN+1];
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if (!start_of_conn_stats_interval)
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return NULL; /* Not initialized. */
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tor_assert(now >= start_of_conn_stats_interval);
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format_iso_time(written, now);
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tor_asprintf(&result, "conn-bi-direct %s (%d s) %d,%d,%d,%d\n",
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written,
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(unsigned) (now - start_of_conn_stats_interval),
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below_threshold,
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mostly_read,
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mostly_written,
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both_read_and_written);
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return result;
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}
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/** If 24 hours have passed since the beginning of the current conn stats
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* period, write conn stats to $DATADIR/stats/conn-stats (possibly
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* overwriting an existing file) and reset counters. Return when we would
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* next want to write conn stats or 0 if we never want to write. */
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time_t
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rep_hist_conn_stats_write(time_t now)
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{
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char *str = NULL;
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if (!start_of_conn_stats_interval)
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return 0; /* Not initialized. */
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if (start_of_conn_stats_interval + WRITE_STATS_INTERVAL > now)
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goto done; /* Not ready to write */
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/* Generate history string. */
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str = rep_hist_format_conn_stats(now);
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/* Reset counters. */
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rep_hist_reset_conn_stats(now);
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/* Try to write to disk. */
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if (!check_or_create_data_subdir("stats")) {
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write_to_data_subdir("stats", "conn-stats", str, "connection statistics");
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}
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done:
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tor_free(str);
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return start_of_conn_stats_interval + WRITE_STATS_INTERVAL;
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}
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24
src/feature/stats/connstats.h
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24
src/feature/stats/connstats.h
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@ -0,0 +1,24 @@
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/* Copyright (c) 2001 Matej Pfajfar.
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* Copyright (c) 2001-2004, Roger Dingledine.
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* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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* Copyright (c) 2007-2020, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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/**
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* @file connstats.h
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* @brief Header for feature/stats/connstats.c
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**/
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#ifndef TOR_FEATURE_STATS_CONNSTATS_H
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#define TOR_FEATURE_STATS_CONNSTATS_H
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void rep_hist_conn_stats_init(time_t now);
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void rep_hist_note_or_conn_bytes(uint64_t conn_id, size_t num_read,
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size_t num_written, time_t when);
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void rep_hist_reset_conn_stats(time_t now);
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char *rep_hist_format_conn_stats(time_t now);
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time_t rep_hist_conn_stats_write(time_t now);
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void rep_hist_conn_stats_term(void);
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void bidi_map_free_all(void);
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#endif /* !defined(TOR_FEATURE_STATS_CONNSTATS_H) */
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@ -2,6 +2,7 @@
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# ADD_C_FILE: INSERT SOURCES HERE.
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LIBTOR_APP_A_SOURCES += \
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src/feature/stats/bwhist.c \
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src/feature/stats/connstats.c \
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src/feature/stats/geoip_stats.c \
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src/feature/stats/rephist.c \
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src/feature/stats/predict_ports.c
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@ -9,6 +10,7 @@ LIBTOR_APP_A_SOURCES += \
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# ADD_C_FILE: INSERT HEADERS HERE.
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noinst_HEADERS += \
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src/feature/stats/bwhist.h \
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src/feature/stats/connstats.h \
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src/feature/stats/geoip_stats.h \
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src/feature/stats/rephist.h \
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src/feature/stats/predict_ports.h
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@ -43,9 +43,6 @@
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* <li>Descriptor serving statistics, used by directory caches to track
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* how many descriptors they've served.
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*
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* <li>Connection statistics, used by relays to track one-way and
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* bidirectional connections.
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*
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* <li>Onion handshake statistics, used by relays to count how many
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* TAP and ntor handshakes they've handled.
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*
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@ -78,6 +75,7 @@
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#include "feature/nodelist/networkstatus.h"
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#include "feature/nodelist/nodelist.h"
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#include "feature/stats/predict_ports.h"
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#include "feature/stats/connstats.h"
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#include "feature/stats/rephist.h"
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#include "lib/container/order.h"
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#include "lib/crypt_ops/crypto_rand.h"
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@ -1648,223 +1646,6 @@ rep_hist_note_desc_served(const char * desc)
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/*** Connection statistics ***/
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/** Start of the current connection stats interval or 0 if we're not
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* collecting connection statistics. */
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static time_t start_of_conn_stats_interval;
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/** Initialize connection stats. */
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void
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rep_hist_conn_stats_init(time_t now)
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{
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start_of_conn_stats_interval = now;
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}
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/* Count connections that we read and wrote less than these many bytes
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* from/to as below threshold. */
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#define BIDI_THRESHOLD 20480
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/* Count connections that we read or wrote at least this factor as many
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* bytes from/to than we wrote or read to/from as mostly reading or
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* writing. */
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#define BIDI_FACTOR 10
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/* Interval length in seconds for considering read and written bytes for
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* connection stats. */
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#define BIDI_INTERVAL 10
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/** Start of next BIDI_INTERVAL second interval. */
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static time_t bidi_next_interval = 0;
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/** Number of connections that we read and wrote less than BIDI_THRESHOLD
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* bytes from/to in BIDI_INTERVAL seconds. */
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static uint32_t below_threshold = 0;
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/** Number of connections that we read at least BIDI_FACTOR times more
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* bytes from than we wrote to in BIDI_INTERVAL seconds. */
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static uint32_t mostly_read = 0;
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/** Number of connections that we wrote at least BIDI_FACTOR times more
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* bytes to than we read from in BIDI_INTERVAL seconds. */
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static uint32_t mostly_written = 0;
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/** Number of connections that we read and wrote at least BIDI_THRESHOLD
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* bytes from/to, but not BIDI_FACTOR times more in either direction in
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* BIDI_INTERVAL seconds. */
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static uint32_t both_read_and_written = 0;
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/** Entry in a map from connection ID to the number of read and written
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* bytes on this connection in a BIDI_INTERVAL second interval. */
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typedef struct bidi_map_entry_t {
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HT_ENTRY(bidi_map_entry_t) node;
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uint64_t conn_id; /**< Connection ID */
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size_t read; /**< Number of read bytes */
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size_t written; /**< Number of written bytes */
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} bidi_map_entry_t;
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/** Map of OR connections together with the number of read and written
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* bytes in the current BIDI_INTERVAL second interval. */
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static HT_HEAD(bidimap, bidi_map_entry_t) bidi_map =
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HT_INITIALIZER();
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static int
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bidi_map_ent_eq(const bidi_map_entry_t *a, const bidi_map_entry_t *b)
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{
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return a->conn_id == b->conn_id;
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}
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/* DOCDOC bidi_map_ent_hash */
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static unsigned
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bidi_map_ent_hash(const bidi_map_entry_t *entry)
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{
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return (unsigned) entry->conn_id;
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}
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HT_PROTOTYPE(bidimap, bidi_map_entry_t, node, bidi_map_ent_hash,
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bidi_map_ent_eq);
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HT_GENERATE2(bidimap, bidi_map_entry_t, node, bidi_map_ent_hash,
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bidi_map_ent_eq, 0.6, tor_reallocarray_, tor_free_);
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/* DOCDOC bidi_map_free */
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static void
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bidi_map_free_all(void)
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{
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bidi_map_entry_t **ptr, **next, *ent;
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for (ptr = HT_START(bidimap, &bidi_map); ptr; ptr = next) {
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ent = *ptr;
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next = HT_NEXT_RMV(bidimap, &bidi_map, ptr);
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tor_free(ent);
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}
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HT_CLEAR(bidimap, &bidi_map);
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}
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/** Reset counters for conn statistics. */
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void
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rep_hist_reset_conn_stats(time_t now)
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{
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start_of_conn_stats_interval = now;
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below_threshold = 0;
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mostly_read = 0;
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mostly_written = 0;
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both_read_and_written = 0;
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bidi_map_free_all();
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}
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/** Stop collecting connection stats in a way that we can re-start doing
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* so in rep_hist_conn_stats_init(). */
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void
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rep_hist_conn_stats_term(void)
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{
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rep_hist_reset_conn_stats(0);
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}
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/** We read <b>num_read</b> bytes and wrote <b>num_written</b> from/to OR
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* connection <b>conn_id</b> in second <b>when</b>. If this is the first
|
||||
* observation in a new interval, sum up the last observations. Add bytes
|
||||
* for this connection. */
|
||||
void
|
||||
rep_hist_note_or_conn_bytes(uint64_t conn_id, size_t num_read,
|
||||
size_t num_written, time_t when)
|
||||
{
|
||||
if (!start_of_conn_stats_interval)
|
||||
return;
|
||||
/* Initialize */
|
||||
if (bidi_next_interval == 0)
|
||||
bidi_next_interval = when + BIDI_INTERVAL;
|
||||
/* Sum up last period's statistics */
|
||||
if (when >= bidi_next_interval) {
|
||||
bidi_map_entry_t **ptr, **next, *ent;
|
||||
for (ptr = HT_START(bidimap, &bidi_map); ptr; ptr = next) {
|
||||
ent = *ptr;
|
||||
if (ent->read + ent->written < BIDI_THRESHOLD)
|
||||
below_threshold++;
|
||||
else if (ent->read >= ent->written * BIDI_FACTOR)
|
||||
mostly_read++;
|
||||
else if (ent->written >= ent->read * BIDI_FACTOR)
|
||||
mostly_written++;
|
||||
else
|
||||
both_read_and_written++;
|
||||
next = HT_NEXT_RMV(bidimap, &bidi_map, ptr);
|
||||
tor_free(ent);
|
||||
}
|
||||
while (when >= bidi_next_interval)
|
||||
bidi_next_interval += BIDI_INTERVAL;
|
||||
log_info(LD_GENERAL, "%d below threshold, %d mostly read, "
|
||||
"%d mostly written, %d both read and written.",
|
||||
below_threshold, mostly_read, mostly_written,
|
||||
both_read_and_written);
|
||||
}
|
||||
/* Add this connection's bytes. */
|
||||
if (num_read > 0 || num_written > 0) {
|
||||
bidi_map_entry_t *entry, lookup;
|
||||
lookup.conn_id = conn_id;
|
||||
entry = HT_FIND(bidimap, &bidi_map, &lookup);
|
||||
if (entry) {
|
||||
entry->written += num_written;
|
||||
entry->read += num_read;
|
||||
} else {
|
||||
entry = tor_malloc_zero(sizeof(bidi_map_entry_t));
|
||||
entry->conn_id = conn_id;
|
||||
entry->written = num_written;
|
||||
entry->read = num_read;
|
||||
HT_INSERT(bidimap, &bidi_map, entry);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/** Return a newly allocated string containing the connection statistics
|
||||
* until <b>now</b>, or NULL if we're not collecting conn stats. Caller must
|
||||
* ensure start_of_conn_stats_interval is in the past. */
|
||||
char *
|
||||
rep_hist_format_conn_stats(time_t now)
|
||||
{
|
||||
char *result, written[ISO_TIME_LEN+1];
|
||||
|
||||
if (!start_of_conn_stats_interval)
|
||||
return NULL; /* Not initialized. */
|
||||
|
||||
tor_assert(now >= start_of_conn_stats_interval);
|
||||
|
||||
format_iso_time(written, now);
|
||||
tor_asprintf(&result, "conn-bi-direct %s (%d s) %d,%d,%d,%d\n",
|
||||
written,
|
||||
(unsigned) (now - start_of_conn_stats_interval),
|
||||
below_threshold,
|
||||
mostly_read,
|
||||
mostly_written,
|
||||
both_read_and_written);
|
||||
return result;
|
||||
}
|
||||
|
||||
/** If 24 hours have passed since the beginning of the current conn stats
|
||||
* period, write conn stats to $DATADIR/stats/conn-stats (possibly
|
||||
* overwriting an existing file) and reset counters. Return when we would
|
||||
* next want to write conn stats or 0 if we never want to write. */
|
||||
time_t
|
||||
rep_hist_conn_stats_write(time_t now)
|
||||
{
|
||||
char *str = NULL;
|
||||
|
||||
if (!start_of_conn_stats_interval)
|
||||
return 0; /* Not initialized. */
|
||||
if (start_of_conn_stats_interval + WRITE_STATS_INTERVAL > now)
|
||||
goto done; /* Not ready to write */
|
||||
|
||||
/* Generate history string. */
|
||||
str = rep_hist_format_conn_stats(now);
|
||||
|
||||
/* Reset counters. */
|
||||
rep_hist_reset_conn_stats(now);
|
||||
|
||||
/* Try to write to disk. */
|
||||
if (!check_or_create_data_subdir("stats")) {
|
||||
write_to_data_subdir("stats", "conn-stats", str, "connection statistics");
|
||||
}
|
||||
|
||||
done:
|
||||
tor_free(str);
|
||||
return start_of_conn_stats_interval + WRITE_STATS_INTERVAL;
|
||||
}
|
||||
|
||||
/** Internal statistics to track how many requests of each type of
|
||||
* handshake we've received, and how many we've assigned to cpuworkers.
|
||||
* Useful for seeing trends in cpu load.
|
||||
|
@ -56,14 +56,6 @@ void rep_hist_note_desc_served(const char * desc);
|
||||
void rep_hist_desc_stats_term(void);
|
||||
time_t rep_hist_desc_stats_write(time_t now);
|
||||
|
||||
void rep_hist_conn_stats_init(time_t now);
|
||||
void rep_hist_note_or_conn_bytes(uint64_t conn_id, size_t num_read,
|
||||
size_t num_written, time_t when);
|
||||
void rep_hist_reset_conn_stats(time_t now);
|
||||
char *rep_hist_format_conn_stats(time_t now);
|
||||
time_t rep_hist_conn_stats_write(time_t now);
|
||||
void rep_hist_conn_stats_term(void);
|
||||
|
||||
void rep_hist_note_circuit_handshake_requested(uint16_t type);
|
||||
void rep_hist_note_circuit_handshake_assigned(uint16_t type);
|
||||
void rep_hist_log_circuit_handshake_stats(time_t now);
|
||||
|
@ -39,6 +39,7 @@
|
||||
#include "test/test.h"
|
||||
#include "core/mainloop/mainloop.h"
|
||||
#include "lib/memarea/memarea.h"
|
||||
#include "feature/stats/connstats.h"
|
||||
#include "feature/stats/rephist.h"
|
||||
#include "app/config/statefile.h"
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user