diff options
Diffstat (limited to 'src/plugins/old-stats')
| -rw-r--r-- | src/plugins/old-stats/Makefile.am | 33 | ||||
| -rw-r--r-- | src/plugins/old-stats/Makefile.in | 898 | ||||
| -rw-r--r-- | src/plugins/old-stats/mail-stats-connection.c | 75 | ||||
| -rw-r--r-- | src/plugins/old-stats/mail-stats-connection.h | 19 | ||||
| -rw-r--r-- | src/plugins/old-stats/mail-stats-fill.c | 156 | ||||
| -rw-r--r-- | src/plugins/old-stats/mail-stats.c | 168 | ||||
| -rw-r--r-- | src/plugins/old-stats/mail-stats.h | 41 | ||||
| -rw-r--r-- | src/plugins/old-stats/stats-plugin.c | 481 | ||||
| -rw-r--r-- | src/plugins/old-stats/stats-plugin.h | 60 |
9 files changed, 1931 insertions, 0 deletions
diff --git a/src/plugins/old-stats/Makefile.am b/src/plugins/old-stats/Makefile.am new file mode 100644 index 0000000..8a95363 --- /dev/null +++ b/src/plugins/old-stats/Makefile.am @@ -0,0 +1,33 @@ +AM_CPPFLAGS = \ + -I$(top_srcdir)/src/lib \ + -I$(top_srcdir)/src/lib-settings \ + -I$(top_srcdir)/src/lib-mail \ + -I$(top_srcdir)/src/lib-master \ + -I$(top_srcdir)/src/lib-old-stats \ + -I$(top_srcdir)/src/lib-index \ + -I$(top_srcdir)/src/lib-storage + +NOPLUGIN_LDFLAGS = +lib90_old_stats_plugin_la_LDFLAGS = -module -avoid-version + +module_LTLIBRARIES = \ + lib90_old_stats_plugin.la + +lib90_old_stats_plugin_la_SOURCES = \ + mail-stats.c \ + mail-stats-fill.c \ + mail-stats-connection.c \ + stats-plugin.c + +noinst_HEADERS = \ + mail-stats.h \ + mail-stats-connection.h \ + stats-plugin.h + +old_stats_moduledir = $(moduledir)/old-stats +old_stats_module_LTLIBRARIES = libold_stats_mail.la + +libold_stats_mail_la_LDFLAGS = -module -avoid-version +libold_stats_mail_la_LIBADD = mail-stats.lo $(LIBDOVECOT) +libold_stats_mail_la_DEPENDENCIES = mail-stats.lo +libold_stats_mail_la_SOURCES = diff --git a/src/plugins/old-stats/Makefile.in b/src/plugins/old-stats/Makefile.in new file mode 100644 index 0000000..be11193 --- /dev/null +++ b/src/plugins/old-stats/Makefile.in @@ -0,0 +1,898 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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Copyright (c) 2011-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "base64.h" +#include "hostpid.h" +#include "net.h" +#include "str.h" +#include "strescape.h" +#include "mail-storage.h" +#include "stats.h" +#include "stats-plugin.h" +#include "mail-stats-connection.h" + +int mail_stats_connection_connect(struct stats_connection *conn, + struct mail_user *user) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + string_t *str = t_str_new(128); + + str_append(str, "CONNECT\t"); + /* required fields */ + str_append(str, suser->stats_session_id); + str_append_c(str, '\t'); + str_append_tabescaped(str, user->username); + str_append_c(str, '\t'); + str_append_tabescaped(str, user->service); + str_printfa(str, "\t%s", my_pid); + + /* optional fields */ + if (user->conn.local_ip != NULL) { + str_append(str, "\tlip="); + str_append(str, net_ip2addr(user->conn.local_ip)); + } + if (user->conn.remote_ip != NULL) { + str_append(str, "\trip="); + str_append(str, net_ip2addr(user->conn.remote_ip)); + } + str_append_c(str, '\n'); + return stats_connection_send(conn, str); +} + +void mail_stats_connection_disconnect(struct stats_connection *conn, + struct mail_user *user) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + string_t *str = t_str_new(128); + + str_append(str, "DISCONNECT\t"); + str_append(str, suser->stats_session_id); + str_append_c(str, '\n'); + if (stats_connection_send(conn, str) < 0) { + /* we could retry this later, but stats process will forget it + anyway after 15 minutes. */ + } +} + +void mail_stats_connection_send_session(struct stats_connection *conn, + struct mail_user *user, + const struct stats *stats) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + string_t *str = t_str_new(256); + buffer_t *buf; + + buf = t_buffer_create(128); + stats_export(buf, stats); + + str_append(str, "UPDATE-SESSION\t"); + str_append(str, suser->stats_session_id); + str_append_c(str, '\t'); + base64_encode(buf->data, buf->used, str); + + str_append_c(str, '\n'); + (void)stats_connection_send(conn, str); +} diff --git a/src/plugins/old-stats/mail-stats-connection.h b/src/plugins/old-stats/mail-stats-connection.h new file mode 100644 index 0000000..f98b691 --- /dev/null +++ b/src/plugins/old-stats/mail-stats-connection.h @@ -0,0 +1,19 @@ +#ifndef MAIL_STATS_CONNECTION_H +#define MAIL_STATS_CONNECTION_H + +#include "stats-connection.h" + +struct mail_stats; +struct mail_user; + +int mail_stats_connection_connect(struct stats_connection *conn, + struct mail_user *user); +void mail_stats_connection_disconnect(struct stats_connection *conn, + struct mail_user *user); + +void mail_stats_connection_send_session(struct stats_connection *conn, + struct mail_user *user, + const struct stats *stats); +void mail_stats_connection_send(struct stats_connection *conn, const string_t *str); + +#endif diff --git a/src/plugins/old-stats/mail-stats-fill.c b/src/plugins/old-stats/mail-stats-fill.c new file mode 100644 index 0000000..10d8c39 --- /dev/null +++ b/src/plugins/old-stats/mail-stats-fill.c @@ -0,0 +1,156 @@ +/* Copyright (c) 2011-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "time-util.h" +#include "stats-plugin.h" +#include "mail-stats.h" + +#include <sys/resource.h> + +#define PROC_IO_PATH "/proc/self/io" + +static bool proc_io_disabled = FALSE; +static int proc_io_fd = -1; + +static int +process_io_buffer_parse(const char *buf, struct mail_stats *stats) +{ + const char *const *tmp; + + tmp = t_strsplit(buf, "\n"); + for (; *tmp != NULL; tmp++) { + if (str_begins(*tmp, "rchar: ")) { + if (str_to_uint64(*tmp + 7, &stats->read_bytes) < 0) + return -1; + } else if (str_begins(*tmp, "wchar: ")) { + if (str_to_uint64(*tmp + 7, &stats->write_bytes) < 0) + return -1; + } else if (str_begins(*tmp, "syscr: ")) { + if (str_to_uint32(*tmp + 7, &stats->read_count) < 0) + return -1; + } else if (str_begins(*tmp, "syscw: ")) { + if (str_to_uint32(*tmp + 7, &stats->write_count) < 0) + return -1; + } + } + return 0; +} + +static int process_io_open(void) +{ + uid_t uid; + + if (proc_io_fd != -1) + return proc_io_fd; + + if (proc_io_disabled) + return -1; + + proc_io_fd = open(PROC_IO_PATH, O_RDONLY); + if (proc_io_fd == -1 && errno == EACCES) { + /* kludge: if we're running with permissions temporarily + dropped, get them temporarily back so we can open + /proc/self/io. */ + uid = geteuid(); + if (seteuid(0) == 0) { + proc_io_fd = open(PROC_IO_PATH, O_RDONLY); + if (seteuid(uid) < 0) { + /* oops, this is bad */ + i_fatal("stats: seteuid(%s) failed", dec2str(uid)); + } + } + errno = EACCES; + } + if (proc_io_fd == -1) { + /* ignore access errors too, certain security options can + prevent root access to this file when not owned by root */ + if (errno != ENOENT && errno != EACCES) + i_error("open(%s) failed: %m", PROC_IO_PATH); + proc_io_disabled = TRUE; + return -1; + } + return proc_io_fd; +} + +static void process_read_io_stats(struct mail_stats *stats) +{ + char buf[1024]; + int fd, ret; + + if ((fd = process_io_open()) == -1) + return; + + ret = pread(fd, buf, sizeof(buf), 0); + if (ret <= 0) { + if (ret == -1) + i_error("read(%s) failed: %m", PROC_IO_PATH); + else + i_error("read(%s) returned EOF", PROC_IO_PATH); + } else if (ret == sizeof(buf)) { + /* just shouldn't happen.. */ + i_error("%s is larger than expected", PROC_IO_PATH); + proc_io_disabled = TRUE; + } else { + buf[ret] = '\0'; + T_BEGIN { + if (process_io_buffer_parse(buf, stats) < 0) { + i_error("Invalid input in file %s", + PROC_IO_PATH); + proc_io_disabled = TRUE; + } + } T_END; + } +} + +static void +user_trans_stats_get(struct stats_user *suser, struct mail_stats *dest_r) +{ + struct stats_transaction_context *strans; + + mail_stats_add_transaction(dest_r, &suser->finished_transaction_stats); + for (strans = suser->transactions; strans != NULL; strans = strans->next) + mail_stats_add_transaction(dest_r, &strans->trans->stats); +} + +void mail_stats_fill(struct stats_user *suser, struct mail_stats *stats_r) +{ + static bool getrusage_broken = FALSE; + static struct rusage prev_usage; + struct rusage usage; + + i_zero(stats_r); + /* cputime */ + if (getrusage(RUSAGE_SELF, &usage) < 0) { + if (!getrusage_broken) { + i_error("getrusage() failed: %m"); + getrusage_broken = TRUE; + } + usage = prev_usage; + } else if (timeval_diff_usecs(&usage.ru_stime, &prev_usage.ru_stime) < 0) { + /* This seems to be a Linux bug. */ + usage.ru_stime = prev_usage.ru_stime; + } + prev_usage = usage; + + stats_r->user_cpu = usage.ru_utime; + stats_r->sys_cpu = usage.ru_stime; + stats_r->min_faults = usage.ru_minflt; + stats_r->maj_faults = usage.ru_majflt; + stats_r->vol_cs = usage.ru_nvcsw; + stats_r->invol_cs = usage.ru_nivcsw; + stats_r->disk_input = (unsigned long long)usage.ru_inblock * 512ULL; + stats_r->disk_output = (unsigned long long)usage.ru_oublock * 512ULL; + i_gettimeofday(&stats_r->clock_time); + process_read_io_stats(stats_r); + user_trans_stats_get(suser, stats_r); +} + +void mail_stats_global_preinit(void) +{ + (void)process_io_open(); +} + +void mail_stats_fill_global_deinit(void) +{ + i_close_fd(&proc_io_fd); +} diff --git a/src/plugins/old-stats/mail-stats.c b/src/plugins/old-stats/mail-stats.c new file mode 100644 index 0000000..3662d23 --- /dev/null +++ b/src/plugins/old-stats/mail-stats.c @@ -0,0 +1,168 @@ +/* Copyright (c) 2011-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "time-util.h" +#include "stats.h" +#include "stats-parser.h" +#include "mail-stats.h" + +static struct stats_parser_field mail_stats_fields[] = { +#define E(parsename, name, type) { parsename, offsetof(struct mail_stats, name), sizeof(((struct mail_stats *)0)->name), type } +#define EN(parsename, name) E(parsename, name, STATS_PARSER_TYPE_UINT) + E("user_cpu", user_cpu, STATS_PARSER_TYPE_TIMEVAL), + E("sys_cpu", sys_cpu, STATS_PARSER_TYPE_TIMEVAL), + E("clock_time", clock_time, STATS_PARSER_TYPE_TIMEVAL), + EN("min_faults", min_faults), + EN("maj_faults", maj_faults), + EN("vol_cs", vol_cs), + EN("invol_cs", invol_cs), + EN("disk_input", disk_input), + EN("disk_output", disk_output), + + EN("read_count", read_count), + EN("read_bytes", read_bytes), + EN("write_count", write_count), + EN("write_bytes", write_bytes), + + /*EN("mopen", trans_stats.open_lookup_count), + EN("mstat", trans_stats.stat_lookup_count), + EN("mfstat", trans_stats.fstat_lookup_count),*/ + EN("mail_lookup_path", trans_lookup_path), + EN("mail_lookup_attr", trans_lookup_attr), + EN("mail_read_count", trans_files_read_count), + EN("mail_read_bytes", trans_files_read_bytes), + EN("mail_cache_hits", trans_cache_hit_count) +}; + +static size_t mail_stats_alloc_size(void) +{ + return sizeof(struct mail_stats); +} + +static unsigned int mail_stats_field_count(void) +{ + return N_ELEMENTS(mail_stats_fields); +} + +static const char *mail_stats_field_name(unsigned int n) +{ + i_assert(n < N_ELEMENTS(mail_stats_fields)); + + return mail_stats_fields[n].name; +} + +static void +mail_stats_field_value(string_t *str, const struct stats *stats, + unsigned int n) +{ + i_assert(n < N_ELEMENTS(mail_stats_fields)); + + stats_parser_value(str, &mail_stats_fields[n], stats); +} + +static bool +mail_stats_diff(const struct stats *stats1, const struct stats *stats2, + struct stats *diff_stats_r, const char **error_r) +{ + return stats_parser_diff(mail_stats_fields, N_ELEMENTS(mail_stats_fields), + stats1, stats2, diff_stats_r, error_r); +} + +static void mail_stats_add(struct stats *dest, const struct stats *src) +{ + stats_parser_add(mail_stats_fields, N_ELEMENTS(mail_stats_fields), + dest, src); +} + +static bool +mail_stats_have_changed(const struct stats *_prev, const struct stats *_cur) +{ + const struct mail_stats *prev = (const struct mail_stats *)_prev; + const struct mail_stats *cur = (const struct mail_stats *)_cur; + + if (cur->disk_input != prev->disk_input || + cur->disk_output != prev->disk_output || + cur->trans_lookup_path != prev->trans_lookup_path || + cur->trans_lookup_attr != prev->trans_lookup_attr || + cur->trans_files_read_count != prev->trans_files_read_count || + cur->trans_files_read_bytes != prev->trans_files_read_bytes || + cur->trans_cache_hit_count != prev->trans_cache_hit_count) + return TRUE; + + /* allow a tiny bit of changes that are caused by this + timeout handling */ + if (timeval_diff_msecs(&cur->user_cpu, &prev->user_cpu) != 0) + return TRUE; + if (timeval_diff_msecs(&cur->sys_cpu, &prev->sys_cpu) != 0) + return TRUE; + + if (cur->maj_faults > prev->maj_faults+10) + return TRUE; + if (cur->invol_cs > prev->invol_cs+10) + return TRUE; + /* don't check for read/write count/bytes changes, since they get + changed by stats checking itself */ + return FALSE; +} + +static void mail_stats_export(buffer_t *buf, const struct stats *_stats) +{ + const struct mail_stats *stats = (const struct mail_stats *)_stats; + + buffer_append(buf, stats, sizeof(*stats)); +} + +static bool +mail_stats_import(const unsigned char *data, size_t size, size_t *pos_r, + struct stats *_stats, const char **error_r) +{ + struct mail_stats *stats = (struct mail_stats *)_stats; + + if (size < sizeof(*stats)) { + *error_r = "mail_stats too small"; + return FALSE; + } + memcpy(stats, data, sizeof(*stats)); + *pos_r = sizeof(*stats); + return TRUE; +} + +void mail_stats_add_transaction(struct mail_stats *stats, + const struct mailbox_transaction_stats *trans_stats) +{ + stats->trans_lookup_path += trans_stats->open_lookup_count; + stats->trans_lookup_attr += trans_stats->stat_lookup_count + + trans_stats->fstat_lookup_count; + stats->trans_files_read_count += trans_stats->files_read_count; + stats->trans_files_read_bytes += trans_stats->files_read_bytes; + stats->trans_cache_hit_count += trans_stats->cache_hit_count; +} + +const struct stats_vfuncs mail_stats_vfuncs = { + "mail", + mail_stats_alloc_size, + mail_stats_field_count, + mail_stats_field_name, + mail_stats_field_value, + mail_stats_diff, + mail_stats_add, + mail_stats_have_changed, + mail_stats_export, + mail_stats_import +}; + +/* for the stats_mail plugin: */ +void old_stats_mail_init(void); +void old_stats_mail_deinit(void); + +static struct stats_item *mail_stats_item; + +void old_stats_mail_init(void) +{ + mail_stats_item = stats_register(&mail_stats_vfuncs); +} + +void old_stats_mail_deinit(void) +{ + stats_unregister(&mail_stats_item); +} diff --git a/src/plugins/old-stats/mail-stats.h b/src/plugins/old-stats/mail-stats.h new file mode 100644 index 0000000..7254b69 --- /dev/null +++ b/src/plugins/old-stats/mail-stats.h @@ -0,0 +1,41 @@ +#ifndef MAIL_STATS_H +#define MAIL_STATS_H + +#include <sys/time.h> +#include "mail-storage-private.h" + +struct stats_user; + +struct mail_stats { + /* user/system CPU time used */ + struct timeval user_cpu, sys_cpu; + /* clock time used (not counting the time in ioloop wait) */ + struct timeval clock_time; + /* minor / major page faults */ + uint32_t min_faults, maj_faults; + /* voluntary / involuntary context switches */ + uint32_t vol_cs, invol_cs; + /* disk input/output bytes */ + uint64_t disk_input, disk_output; + /* read()/write() syscall count and number of bytes */ + uint32_t read_count, write_count; + uint64_t read_bytes, write_bytes; + + /* based on struct mailbox_transaction_stats: */ + uint32_t trans_lookup_path; + uint32_t trans_lookup_attr; + uint32_t trans_files_read_count; + uint64_t trans_files_read_bytes; + uint64_t trans_cache_hit_count; +}; + +extern const struct stats_vfuncs mail_stats_vfuncs; + +void mail_stats_fill(struct stats_user *suser, struct mail_stats *mail_stats); +void mail_stats_add_transaction(struct mail_stats *stats, + const struct mailbox_transaction_stats *trans_stats); + +void mail_stats_global_preinit(void); +void mail_stats_fill_global_deinit(void); + +#endif diff --git a/src/plugins/old-stats/stats-plugin.c b/src/plugins/old-stats/stats-plugin.c new file mode 100644 index 0000000..9d33016 --- /dev/null +++ b/src/plugins/old-stats/stats-plugin.c @@ -0,0 +1,481 @@ +/* Copyright (c) 2011-2018 Dovecot authors, see the included COPYING file */ + +#include "lib.h" +#include "ioloop.h" +#include "llist.h" +#include "str.h" +#include "time-util.h" +#include "settings-parser.h" +#include "mail-stats.h" +#include "stats.h" +#include "mail-stats-connection.h" +#include "stats-plugin.h" + +#define STATS_CONTEXT(obj) \ + MODULE_CONTEXT(obj, stats_storage_module) +#define STATS_CONTEXT_REQUIRE(obj) \ + MODULE_CONTEXT_REQUIRE(obj, stats_storage_module) + +/* If session isn't refreshed every 15 minutes, it's dropped. + Must be smaller than MAIL_SESSION_IDLE_TIMEOUT_MSECS in stats server */ +#define SESSION_STATS_FORCE_REFRESH_SECS (5*60) +#define REFRESH_CHECK_INTERVAL 100 +#define MAIL_STATS_FIFO_NAME "old-stats-mail" + +struct stats_storage { + union mail_storage_module_context module_ctx; + + struct mail_storage_callbacks old_callbacks; + void *old_context; +}; + +struct stats_mailbox { + union mailbox_module_context module_ctx; +}; + +const char *stats_plugin_version = DOVECOT_ABI_VERSION; + +struct stats_user_module stats_user_module = + MODULE_CONTEXT_INIT(&mail_user_module_register); +struct stats_storage_module stats_storage_module = + MODULE_CONTEXT_INIT(&mail_storage_module_register); + +static struct stats_item *mail_stats_item; +static struct stats_connection *global_stats_conn = NULL; +static struct mail_user *stats_global_user = NULL; +static unsigned int stats_user_count = 0; + +static void session_stats_refresh_timeout(struct mail_user *user); + +static void stats_io_activate(struct mail_user *user) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + struct mail_stats *mail_stats; + + if (stats_user_count == 1) { + /* the first user sets the global user. the second user sets + it to NULL. when we get back to one user we'll need to set + the global user again somewhere. do it here. */ + stats_global_user = user; + /* skip time spent waiting in ioloop */ + mail_stats = stats_fill_ptr(suser->pre_io_stats, mail_stats_item); + mail_stats->clock_time = ioloop_timeval; + } else { + i_assert(stats_global_user == NULL); + + mail_user_stats_fill(user, suser->pre_io_stats); + } +} + +static void stats_add_session(struct mail_user *user) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + struct stats *new_stats, *diff_stats; + const char *error; + + new_stats = stats_alloc(pool_datastack_create()); + diff_stats = stats_alloc(pool_datastack_create()); + + mail_user_stats_fill(user, new_stats); + /* we'll count new_stats-pre_io_stats and add the changes to + session_stats. the new_stats can't be directly copied to + session_stats because there are some fields that don't start from + zero, like clock_time. (actually with stats_global_user code we're + requiring that clock_time is the only such field..) */ + if (!stats_diff(suser->pre_io_stats, new_stats, diff_stats, &error)) + i_error("stats: session stats shrank: %s", error); + stats_add(suser->session_stats, diff_stats); + /* copying is only needed if stats_global_user=NULL */ + stats_copy(suser->pre_io_stats, new_stats); +} + +static bool +session_stats_need_send(struct stats_user *suser, time_t now, + bool *changed_r, unsigned int *to_next_secs_r) +{ + unsigned int diff; + + *to_next_secs_r = SESSION_STATS_FORCE_REFRESH_SECS; + + if (stats_have_changed(suser->last_sent_session_stats, + suser->session_stats)) { + *to_next_secs_r = suser->refresh_secs; + *changed_r = TRUE; + return TRUE; + } + *changed_r = FALSE; + + diff = now - suser->last_session_update; + if (diff >= SESSION_STATS_FORCE_REFRESH_SECS) + return TRUE; + *to_next_secs_r = SESSION_STATS_FORCE_REFRESH_SECS - diff; + + if (!suser->session_sent_duplicate) { + if (suser->last_session_update != now) { + /* send one duplicate notification so stats reader + knows that this session is idle now */ + return TRUE; + } + } + return FALSE; +} + +static void session_stats_refresh(struct mail_user *user) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + unsigned int to_next_secs; + time_t now = time(NULL); + bool changed; + + if (!suser->stats_connected) { + if (mail_stats_connection_connect(suser->stats_conn, user) == 0) + suser->stats_connected = TRUE; + } + if (session_stats_need_send(suser, now, &changed, &to_next_secs) && + suser->stats_connected) { + suser->session_sent_duplicate = !changed; + suser->last_session_update = now; + stats_copy(suser->last_sent_session_stats, suser->session_stats); + mail_stats_connection_send_session(suser->stats_conn, user, + suser->session_stats); + } + + timeout_remove(&suser->to_stats_timeout); + suser->to_stats_timeout = + timeout_add(to_next_secs*1000, + session_stats_refresh_timeout, user); +} + +static struct mailbox_transaction_context * +stats_transaction_begin(struct mailbox *box, + enum mailbox_transaction_flags flags, + const char *reason) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(box->storage->user); + struct stats_mailbox *sbox = STATS_CONTEXT_REQUIRE(box); + struct mailbox_transaction_context *trans; + struct stats_transaction_context *strans; + + trans = sbox->module_ctx.super.transaction_begin(box, flags, reason); + trans->stats_track = TRUE; + + strans = i_new(struct stats_transaction_context, 1); + strans->trans = trans; + DLLIST_PREPEND(&suser->transactions, strans); + + MODULE_CONTEXT_SET(trans, stats_storage_module, strans); + return trans; +} + +static void stats_transaction_free(struct stats_user *suser, + struct stats_transaction_context *strans) +{ + const struct mailbox_transaction_stats *src = &strans->trans->stats; + struct mailbox_transaction_stats *dest = + &suser->finished_transaction_stats; + + DLLIST_REMOVE(&suser->transactions, strans); + + dest->open_lookup_count += src->open_lookup_count; + dest->stat_lookup_count += src->stat_lookup_count; + dest->fstat_lookup_count += src->fstat_lookup_count; + dest->files_read_count += src->files_read_count; + dest->files_read_bytes += src->files_read_bytes; + dest->cache_hit_count += src->cache_hit_count; + i_free(strans); +} + +static int +stats_transaction_commit(struct mailbox_transaction_context *ctx, + struct mail_transaction_commit_changes *changes_r) +{ + struct stats_transaction_context *strans = STATS_CONTEXT_REQUIRE(ctx); + struct stats_mailbox *sbox = STATS_CONTEXT_REQUIRE(ctx->box); + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(ctx->box->storage->user); + + stats_transaction_free(suser, strans); + return sbox->module_ctx.super.transaction_commit(ctx, changes_r); +} + +static void +stats_transaction_rollback(struct mailbox_transaction_context *ctx) +{ + struct stats_transaction_context *strans = STATS_CONTEXT_REQUIRE(ctx); + struct stats_mailbox *sbox = STATS_CONTEXT_REQUIRE(ctx->box); + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(ctx->box->storage->user); + + stats_transaction_free(suser, strans); + sbox->module_ctx.super.transaction_rollback(ctx); +} + +static bool stats_search_next_nonblock(struct mail_search_context *ctx, + struct mail **mail_r, bool *tryagain_r) +{ + struct stats_mailbox *sbox = STATS_CONTEXT_REQUIRE(ctx->transaction->box); + struct mail_user *user = ctx->transaction->box->storage->user; + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + bool ret; + + ret = sbox->module_ctx.super. + search_next_nonblock(ctx, mail_r, tryagain_r); + if (!ret && !*tryagain_r) { + /* end of search */ + return FALSE; + } + + if (*tryagain_r || + ++suser->refresh_check_counter % REFRESH_CHECK_INTERVAL == 0) { + /* a) retrying, so this is a long running search. + b) we've returned enough matches */ + if (time(NULL) != suser->last_session_update) + session_stats_refresh(user); + } + return ret; +} + +static void +stats_notify_ok(struct mailbox *box, const char *text, void *context) +{ + struct stats_storage *sstorage = STATS_CONTEXT_REQUIRE(box->storage); + + /* most importantly we want to refresh stats for very long running + mailbox syncs */ + session_stats_refresh(box->storage->user); + + if (sstorage->old_callbacks.notify_ok != NULL) + sstorage->old_callbacks.notify_ok(box, text, context); +} + +static void stats_register_notify_callbacks(struct mail_storage *storage) +{ + struct stats_storage *sstorage = STATS_CONTEXT(storage); + + if (sstorage != NULL) + return; + + sstorage = p_new(storage->pool, struct stats_storage, 1); + sstorage->old_callbacks = storage->callbacks; + storage->callbacks.notify_ok = stats_notify_ok; + + MODULE_CONTEXT_SET(storage, stats_storage_module, sstorage); +} + +static void stats_mailbox_allocated(struct mailbox *box) +{ + struct mailbox_vfuncs *v = box->vlast; + struct stats_mailbox *sbox; + struct stats_user *suser = STATS_USER_CONTEXT(box->storage->user); + + if (suser == NULL) + return; + + stats_register_notify_callbacks(box->storage); + + sbox = p_new(box->pool, struct stats_mailbox, 1); + sbox->module_ctx.super = *v; + box->vlast = &sbox->module_ctx.super; + + v->transaction_begin = stats_transaction_begin; + v->transaction_commit = stats_transaction_commit; + v->transaction_rollback = stats_transaction_rollback; + v->search_next_nonblock = stats_search_next_nonblock; + MODULE_CONTEXT_SET(box, stats_storage_module, sbox); +} + +static void session_stats_refresh_timeout(struct mail_user *user) +{ + if (stats_global_user != NULL) + stats_add_session(user); + session_stats_refresh(user); +} + +static void stats_io_deactivate(struct mail_user *user) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + unsigned int last_update_secs; + + if (stats_global_user == NULL) + stats_add_session(user); + + last_update_secs = time(NULL) - suser->last_session_update; + if (last_update_secs >= suser->refresh_secs) { + if (stats_global_user != NULL) + stats_add_session(user); + session_stats_refresh(user); + } else if (suser->to_stats_timeout == NULL) { + suser->to_stats_timeout = + timeout_add(suser->refresh_secs*1000, + session_stats_refresh_timeout, user); + } +} + +static void stats_user_stats_fill(struct mail_user *user, struct stats *stats) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + struct mail_stats *mail_stats; + + mail_stats = stats_fill_ptr(stats, mail_stats_item); + mail_stats_fill(suser, mail_stats); + + suser->module_ctx.super.stats_fill(user, stats); +} + +static void stats_user_deinit(struct mail_user *user) +{ + struct stats_user *suser = STATS_USER_CONTEXT_REQUIRE(user); + struct stats_connection *stats_conn = suser->stats_conn; + + i_assert(stats_user_count > 0); + + stats_user_count--; + if (stats_global_user != NULL) { + /* we were updating the session lazily. do one final update. */ + i_assert(stats_global_user == user); + stats_add_session(user); + stats_global_user = NULL; + } + + io_loop_context_remove_callbacks(suser->ioloop_ctx, + stats_io_activate, + stats_io_deactivate, user); + /* send final stats before disconnection */ + session_stats_refresh(user); + if (suser->stats_connected) + mail_stats_connection_disconnect(stats_conn, user); + + timeout_remove(&suser->to_stats_timeout); + suser->module_ctx.super.deinit(user); + + stats_connection_unref(&stats_conn); +} + +static void stats_user_created(struct mail_user *user) +{ + struct ioloop_context *ioloop_ctx = + io_loop_get_current_context(current_ioloop); + struct stats_user *suser; + struct mail_user_vfuncs *v = user->vlast; + const char *path, *str, *error; + unsigned int refresh_secs; + + if (ioloop_ctx == NULL) { + /* we're probably running some test program, or at least + mail-storage-service wasn't used to create this user. + disable stats tracking. */ + return; + } + if (user->autocreated) { + /* lda / shared user. we're not tracking this one. */ + return; + } + + /* get refresh time */ + str = mail_user_plugin_getenv(user, "old_stats_refresh"); + if (str == NULL) + return; + if (settings_get_time(str, &refresh_secs, &error) < 0) { + i_error("stats: Invalid old_stats_refresh setting: %s", error); + return; + } + if (refresh_secs == 0) + return; + if (refresh_secs > SESSION_STATS_FORCE_REFRESH_SECS) { + i_warning("stats: stats_refresh too large, changing to %u", + SESSION_STATS_FORCE_REFRESH_SECS); + refresh_secs = SESSION_STATS_FORCE_REFRESH_SECS; + } + + if (global_stats_conn == NULL) { + path = mail_user_plugin_getenv(user, "old_stats_notify_path"); + if (path == NULL) + path = MAIL_STATS_FIFO_NAME; + if (path[0] != '/') + path = t_strconcat(user->set->base_dir, "/", path, NULL); + global_stats_conn = stats_connection_create(path); + } + stats_connection_ref(global_stats_conn); + + if (stats_user_count == 0) { + /* first user connection */ + stats_global_user = user; + } else if (stats_user_count == 1) { + /* second user connection. we'll need to start doing + per-io callback tracking now. (we might have been doing it + also previously but just temporarily quickly dropped to + having 1 user, in which case stats_global_user=NULL) */ + if (stats_global_user != NULL) { + stats_add_session(stats_global_user); + stats_global_user = NULL; + } + } + stats_user_count++; + + suser = p_new(user->pool, struct stats_user, 1); + suser->module_ctx.super = *v; + user->vlast = &suser->module_ctx.super; + v->deinit = stats_user_deinit; + v->stats_fill = stats_user_stats_fill; + + suser->refresh_secs = refresh_secs; + if (mail_user_plugin_getenv_bool(user, "old_stats_track_cmds")) + suser->track_commands = TRUE; + + suser->stats_conn = global_stats_conn; + if (user->session_id != NULL && user->session_id[0] != '\0') + suser->stats_session_id = user->session_id; + else { + guid_128_t guid; + + guid_128_generate(guid); + suser->stats_session_id = + p_strdup(user->pool, guid_128_to_string(guid)); + } + suser->last_session_update = time(NULL); + user->stats_enabled = TRUE; + + suser->ioloop_ctx = ioloop_ctx; + io_loop_context_add_callbacks(ioloop_ctx, + stats_io_activate, + stats_io_deactivate, user); + + suser->pre_io_stats = stats_alloc(user->pool); + suser->session_stats = stats_alloc(user->pool); + suser->last_sent_session_stats = stats_alloc(user->pool); + + MODULE_CONTEXT_SET(user, stats_user_module, suser); + if (mail_stats_connection_connect(suser->stats_conn, user) == 0) + suser->stats_connected = TRUE; + suser->to_stats_timeout = + timeout_add(suser->refresh_secs*1000, + session_stats_refresh_timeout, user); + /* fill the initial values. this is necessary for the process-global + values (e.g. getrusage()) if the process is reused for multiple + users. otherwise the next user will start with the previous one's + last values. */ + mail_user_stats_fill(user, suser->pre_io_stats); +} + +static struct mail_storage_hooks stats_mail_storage_hooks = { + .mailbox_allocated = stats_mailbox_allocated, + .mail_user_created = stats_user_created +}; + +void old_stats_plugin_init(struct module *module) +{ + mail_stats_item = stats_register(&mail_stats_vfuncs); + mail_storage_hooks_add(module, &stats_mail_storage_hooks); +} + +void old_stats_plugin_preinit(void) +{ + mail_stats_global_preinit(); +} + +void old_stats_plugin_deinit(void) +{ + if (global_stats_conn != NULL) + stats_connection_unref(&global_stats_conn); + mail_stats_fill_global_deinit(); + mail_storage_hooks_remove(&stats_mail_storage_hooks); + stats_unregister(&mail_stats_item); +} diff --git a/src/plugins/old-stats/stats-plugin.h b/src/plugins/old-stats/stats-plugin.h new file mode 100644 index 0000000..dedcfbd --- /dev/null +++ b/src/plugins/old-stats/stats-plugin.h @@ -0,0 +1,60 @@ +#ifndef STATS_PLUGIN_H +#define STATS_PLUGIN_H + +#include "module-context.h" +#include "mail-user.h" +#include "mail-storage-private.h" + +#define STATS_USER_CONTEXT(obj) \ + MODULE_CONTEXT(obj, stats_user_module) + +#define STATS_USER_CONTEXT_REQUIRE(obj) \ + MODULE_CONTEXT_REQUIRE(obj, stats_user_module) + +struct stats_user { + union mail_user_module_context module_ctx; + + struct ioloop_context *ioloop_ctx; + struct stats_connection *stats_conn; + const char *stats_session_id; + bool stats_connected; + + unsigned int refresh_secs; + bool track_commands; + unsigned int refresh_check_counter; + + /* current session statistics */ + struct stats *session_stats; + /* cumulative trans_stats for all already freed transactions. */ + struct mailbox_transaction_stats finished_transaction_stats; + /* stats before calling IO callback. after IO callback this value is + compared to current stats to see the difference */ + struct stats *pre_io_stats; + + time_t last_session_update; + struct timeout *to_stats_timeout; + /* stats that were last sent to stats server */ + struct stats *last_sent_session_stats; + bool session_sent_duplicate; + + /* list of all currently existing transactions for this user */ + struct stats_transaction_context *transactions; +}; + +struct stats_transaction_context { + union mailbox_transaction_module_context module_ctx; + + struct stats_transaction_context *prev, *next; + struct mailbox_transaction_context *trans; + + struct mailbox_transaction_stats prev_stats; +}; + +extern MODULE_CONTEXT_DEFINE(stats_user_module, &mail_user_module_register); +extern MODULE_CONTEXT_DEFINE(stats_storage_module, &mail_storage_module_register); + +void old_stats_plugin_init(struct module *module); +void old_stats_plugin_preinit(void); +void old_stats_plugin_deinit(void); + +#endif |