1 /* prot.c - protocol implementation */
3 /* Copyright (C) 2007 Keith Rarick and Philotic Inc.
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include <sys/resource.h>
43 /* job body cannot be greater than this many bytes long */
44 size_t job_data_size_limit
= JOB_DATA_SIZE_LIMIT_DEFAULT
;
47 "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
48 "abcdefghijklmnopqrstuvwxyz" \
51 #define CMD_PUT "put "
52 #define CMD_PEEKJOB "peek "
53 #define CMD_PEEK_READY "peek-ready"
54 #define CMD_PEEK_DELAYED "peek-delayed"
55 #define CMD_PEEK_BURIED "peek-buried"
56 #define CMD_RESERVE "reserve"
57 #define CMD_RESERVE_TIMEOUT "reserve-with-timeout "
58 #define CMD_DELETE "delete "
59 #define CMD_RELEASE "release "
60 #define CMD_BURY "bury "
61 #define CMD_KICK "kick "
62 #define CMD_TOUCH "touch "
63 #define CMD_STATS "stats"
64 #define CMD_JOBSTATS "stats-job "
65 #define CMD_USE "use "
66 #define CMD_WATCH "watch "
67 #define CMD_IGNORE "ignore "
68 #define CMD_LIST_TUBES "list-tubes"
69 #define CMD_LIST_TUBE_USED "list-tube-used"
70 #define CMD_LIST_TUBES_WATCHED "list-tubes-watched"
71 #define CMD_STATS_TUBE "stats-tube "
72 #define CMD_QUIT "quit"
74 #define CONSTSTRLEN(m) (sizeof(m) - 1)
76 #define CMD_PEEK_READY_LEN CONSTSTRLEN(CMD_PEEK_READY)
77 #define CMD_PEEK_DELAYED_LEN CONSTSTRLEN(CMD_PEEK_DELAYED)
78 #define CMD_PEEK_BURIED_LEN CONSTSTRLEN(CMD_PEEK_BURIED)
79 #define CMD_PEEKJOB_LEN CONSTSTRLEN(CMD_PEEKJOB)
80 #define CMD_RESERVE_LEN CONSTSTRLEN(CMD_RESERVE)
81 #define CMD_RESERVE_TIMEOUT_LEN CONSTSTRLEN(CMD_RESERVE_TIMEOUT)
82 #define CMD_DELETE_LEN CONSTSTRLEN(CMD_DELETE)
83 #define CMD_RELEASE_LEN CONSTSTRLEN(CMD_RELEASE)
84 #define CMD_BURY_LEN CONSTSTRLEN(CMD_BURY)
85 #define CMD_KICK_LEN CONSTSTRLEN(CMD_KICK)
86 #define CMD_TOUCH_LEN CONSTSTRLEN(CMD_TOUCH)
87 #define CMD_STATS_LEN CONSTSTRLEN(CMD_STATS)
88 #define CMD_JOBSTATS_LEN CONSTSTRLEN(CMD_JOBSTATS)
89 #define CMD_USE_LEN CONSTSTRLEN(CMD_USE)
90 #define CMD_WATCH_LEN CONSTSTRLEN(CMD_WATCH)
91 #define CMD_IGNORE_LEN CONSTSTRLEN(CMD_IGNORE)
92 #define CMD_LIST_TUBES_LEN CONSTSTRLEN(CMD_LIST_TUBES)
93 #define CMD_LIST_TUBE_USED_LEN CONSTSTRLEN(CMD_LIST_TUBE_USED)
94 #define CMD_LIST_TUBES_WATCHED_LEN CONSTSTRLEN(CMD_LIST_TUBES_WATCHED)
95 #define CMD_STATS_TUBE_LEN CONSTSTRLEN(CMD_STATS_TUBE)
97 #define MSG_FOUND "FOUND"
98 #define MSG_NOTFOUND "NOT_FOUND\r\n"
99 #define MSG_RESERVED "RESERVED"
100 #define MSG_DEADLINE_SOON "DEADLINE_SOON\r\n"
101 #define MSG_TIMED_OUT "TIMED_OUT\r\n"
102 #define MSG_DELETED "DELETED\r\n"
103 #define MSG_RELEASED "RELEASED\r\n"
104 #define MSG_BURIED "BURIED\r\n"
105 #define MSG_TOUCHED "TOUCHED\r\n"
106 #define MSG_BURIED_FMT "BURIED %llu\r\n"
107 #define MSG_INSERTED_FMT "INSERTED %llu\r\n"
108 #define MSG_NOT_IGNORED "NOT_IGNORED\r\n"
110 #define MSG_NOTFOUND_LEN CONSTSTRLEN(MSG_NOTFOUND)
111 #define MSG_DELETED_LEN CONSTSTRLEN(MSG_DELETED)
112 #define MSG_TOUCHED_LEN CONSTSTRLEN(MSG_TOUCHED)
113 #define MSG_RELEASED_LEN CONSTSTRLEN(MSG_RELEASED)
114 #define MSG_BURIED_LEN CONSTSTRLEN(MSG_BURIED)
115 #define MSG_NOT_IGNORED_LEN CONSTSTRLEN(MSG_NOT_IGNORED)
117 #define MSG_OUT_OF_MEMORY "OUT_OF_MEMORY\r\n"
118 #define MSG_INTERNAL_ERROR "INTERNAL_ERROR\r\n"
119 #define MSG_DRAINING "DRAINING\r\n"
120 #define MSG_BAD_FORMAT "BAD_FORMAT\r\n"
121 #define MSG_UNKNOWN_COMMAND "UNKNOWN_COMMAND\r\n"
122 #define MSG_EXPECTED_CRLF "EXPECTED_CRLF\r\n"
123 #define MSG_JOB_TOO_BIG "JOB_TOO_BIG\r\n"
125 #define STATE_WANTCOMMAND 0
126 #define STATE_WANTDATA 1
127 #define STATE_SENDJOB 2
128 #define STATE_SENDWORD 3
130 #define STATE_BITBUCKET 5
141 #define OP_JOBSTATS 9
142 #define OP_PEEK_BURIED 10
146 #define OP_LIST_TUBES 14
147 #define OP_LIST_TUBE_USED 15
148 #define OP_LIST_TUBES_WATCHED 16
149 #define OP_STATS_TUBE 17
150 #define OP_PEEK_READY 18
151 #define OP_PEEK_DELAYED 19
152 #define OP_RESERVE_TIMEOUT 20
157 #define STATS_FMT "---\n" \
158 "current-jobs-urgent: %u\n" \
159 "current-jobs-ready: %u\n" \
160 "current-jobs-reserved: %u\n" \
161 "current-jobs-delayed: %u\n" \
162 "current-jobs-buried: %u\n" \
163 "cmd-put: %" PRIu64 "\n" \
164 "cmd-peek: %" PRIu64 "\n" \
165 "cmd-peek-ready: %" PRIu64 "\n" \
166 "cmd-peek-delayed: %" PRIu64 "\n" \
167 "cmd-peek-buried: %" PRIu64 "\n" \
168 "cmd-reserve: %" PRIu64 "\n" \
169 "cmd-reserve-with-timeout: %" PRIu64 "\n" \
170 "cmd-delete: %" PRIu64 "\n" \
171 "cmd-release: %" PRIu64 "\n" \
172 "cmd-use: %" PRIu64 "\n" \
173 "cmd-watch: %" PRIu64 "\n" \
174 "cmd-ignore: %" PRIu64 "\n" \
175 "cmd-bury: %" PRIu64 "\n" \
176 "cmd-kick: %" PRIu64 "\n" \
177 "cmd-touch: %" PRIu64 "\n" \
178 "cmd-stats: %" PRIu64 "\n" \
179 "cmd-stats-job: %" PRIu64 "\n" \
180 "cmd-stats-tube: %" PRIu64 "\n" \
181 "cmd-list-tubes: %" PRIu64 "\n" \
182 "cmd-list-tube-used: %" PRIu64 "\n" \
183 "cmd-list-tubes-watched: %" PRIu64 "\n" \
184 "job-timeouts: %" PRIu64 "\n" \
185 "total-jobs: %" PRIu64 "\n" \
186 "max-job-size: %zu\n" \
187 "current-tubes: %zu\n" \
188 "current-connections: %u\n" \
189 "current-producers: %u\n" \
190 "current-workers: %u\n" \
191 "current-waiting: %u\n" \
192 "total-connections: %u\n" \
195 "rusage-utime: %d.%06d\n" \
196 "rusage-stime: %d.%06d\n" \
198 "binlog-oldest-index: %s\n" \
199 "binlog-current-index: %s\n" \
200 "binlog-max-size: %zu\n" \
203 #define STATS_TUBE_FMT "---\n" \
205 "current-jobs-urgent: %u\n" \
206 "current-jobs-ready: %u\n" \
207 "current-jobs-reserved: %u\n" \
208 "current-jobs-delayed: %u\n" \
209 "current-jobs-buried: %u\n" \
210 "total-jobs: %" PRIu64 "\n" \
211 "current-using: %u\n" \
212 "current-watching: %u\n" \
213 "current-waiting: %u\n" \
216 /* this number is pretty arbitrary */
217 #define BUCKET_BUF_SIZE 1024
219 static char bucket
[BUCKET_BUF_SIZE
];
221 static unsigned int ready_ct
= 0;
222 static struct stats global_stat
= {0, 0, 0, 0, 0};
224 static tube default_tube
;
226 static int drain_mode
= 0;
227 static usec started_at
;
228 static uint64_t op_ct
[TOTAL_OPS
], timeout_ct
= 0;
231 /* Doubly-linked list of connections with at least one reserved job. */
232 static struct conn running
= { &running
, &running
, 0 };
235 static const char * op_names
[] = {
252 CMD_LIST_TUBES_WATCHED
,
262 static job
remove_buried_job(job j
);
267 return job_list_any_p(&t
->buried
);
271 reply(conn c
, const char *line
, int len
, int state
)
277 r
= conn_update_evq(c
, EV_WRITE
| EV_PERSIST
);
278 if (r
== -1) return twarnx("conn_update_evq() failed"), conn_close(c
);
284 dprintf("sending reply: %.*s", len
, line
);
287 #define reply_msg(c,m) reply((c),(m),CONSTSTRLEN(m),STATE_SENDWORD)
289 #define reply_serr(c,e) (twarnx("server error: %s",(e)),\
293 reply_line(conn c
, int state
, const char *fmt
, ...)
299 r
= vsnprintf(c
->reply_buf
, LINE_BUF_SIZE
, fmt
, ap
);
302 /* Make sure the buffer was big enough. If not, we have a bug. */
303 if (r
>= LINE_BUF_SIZE
) return reply_serr(c
, MSG_INTERNAL_ERROR
);
305 return reply(c
, c
->reply_buf
, r
, state
);
309 reply_job(conn c
, job j
, const char *word
)
311 /* tell this connection which job to send */
315 return reply_line(c
, STATE_SENDJOB
, "%s %llu %u\r\n",
316 word
, j
->id
, j
->body_size
- 2);
320 remove_waiting_conn(conn c
)
325 if (!conn_waiting(c
)) return NULL
;
327 c
->type
&= ~CONN_TYPE_WAITING
;
328 global_stat
.waiting_ct
--;
329 for (i
= 0; i
< c
->watch
.used
; i
++) {
330 t
= c
->watch
.items
[i
];
331 t
->stat
.waiting_ct
--;
332 ms_remove(&t
->waiting
, c
);
338 reserve_job(conn c
, job j
)
340 j
->deadline_at
= now_usec() + j
->ttr
;
341 global_stat
.reserved_ct
++; /* stats */
342 j
->tube
->stat
.reserved_ct
++;
344 conn_insert(&running
, c
);
345 j
->state
= JOB_STATE_RESERVED
;
346 job_insert(&c
->reserved_jobs
, j
);
348 if (c
->soonest_job
&& j
->deadline_at
< c
->soonest_job
->deadline_at
) {
351 return reply_job(c
, j
, MSG_RESERVED
);
359 job j
= NULL
, candidate
;
361 dprintf("tubes.used = %zu\n", tubes
.used
);
362 for (i
= 0; i
< tubes
.used
; i
++) {
364 dprintf("for %s t->waiting.used=%zu t->ready.used=%d\n",
365 t
->name
, t
->waiting
.used
, t
->ready
.used
);
366 if (t
->waiting
.used
&& t
->ready
.used
) {
367 candidate
= pq_peek(&t
->ready
);
368 if (!j
|| job_pri_cmp(candidate
, j
) < 0) j
= candidate
;
370 dprintf("i = %zu, tubes.used = %zu\n", i
, tubes
.used
);
381 dprintf("processing queue\n");
382 while ((j
= next_eligible_job())) {
383 dprintf("got eligible job %llu in %s\n", j
->id
, j
->tube
->name
);
384 j
= pq_take(&j
->tube
->ready
);
386 if (j
->pri
< URGENT_THRESHOLD
) {
387 global_stat
.urgent_ct
--;
388 j
->tube
->stat
.urgent_ct
--;
390 reserve_job(remove_waiting_conn(ms_take(&j
->tube
->waiting
)), j
);
401 for (i
= 0; i
< tubes
.used
; i
++) {
403 nj
= pq_peek(&t
->delay
);
405 if (!j
|| nj
->deadline_at
< j
->deadline_at
) j
= nj
;
412 set_main_delay_timeout()
416 set_main_timeout((j
= delay_q_peek()) ? j
->deadline_at
: 0);
420 enqueue_job(job j
, usec delay
, char update_store
)
426 j
->deadline_at
= now_usec() + delay
;
427 r
= pq_give(&j
->tube
->delay
, j
);
429 j
->state
= JOB_STATE_DELAYED
;
430 set_main_delay_timeout();
432 r
= pq_give(&j
->tube
->ready
, j
);
434 j
->state
= JOB_STATE_READY
;
436 if (j
->pri
< URGENT_THRESHOLD
) {
437 global_stat
.urgent_ct
++;
438 j
->tube
->stat
.urgent_ct
++;
443 r
= binlog_write_job(j
);
452 bury_job(job j
, char update_store
)
457 z
= binlog_reserve_space_update(j
);
459 j
->reserved_binlog_space
+= z
;
462 job_insert(&j
->tube
->buried
, j
);
463 global_stat
.buried_ct
++;
464 j
->tube
->stat
.buried_ct
++;
465 j
->state
= JOB_STATE_BURIED
;
469 if (update_store
) return binlog_write_job(j
);
475 enqueue_reserved_jobs(conn c
)
480 while (job_list_any_p(&c
->reserved_jobs
)) {
481 j
= job_remove(c
->reserved_jobs
.next
);
482 r
= enqueue_job(j
, 0, 0);
483 if (r
< 1) bury_job(j
, 0);
484 global_stat
.reserved_ct
--;
485 j
->tube
->stat
.reserved_ct
--;
486 c
->soonest_job
= NULL
;
487 if (!job_list_any_p(&c
->reserved_jobs
)) conn_remove(c
);
494 job j
= delay_q_peek();
495 return j
? pq_take(&j
->tube
->delay
) : NULL
;
499 kick_buried_job(tube t
)
505 if (!buried_job_p(t
)) return 0;
506 j
= remove_buried_job(t
->buried
.next
);
508 z
= binlog_reserve_space_update(j
);
509 if (!z
) return pq_give(&t
->delay
, j
), 0; /* put it back */
510 j
->reserved_binlog_space
+= z
;
513 r
= enqueue_job(j
, 0, 1);
514 if (r
== 1) return 1;
516 /* ready queue is full, so bury it */
526 unsigned int count
= 0;
528 for (i
= 0; i
< tubes
.used
; i
++) {
530 count
+= t
->delay
.used
;
536 kick_delayed_job(tube t
)
542 j
= pq_take(&t
->delay
);
545 z
= binlog_reserve_space_update(j
);
546 if (!z
) return pq_give(&t
->delay
, j
), 0; /* put it back */
547 j
->reserved_binlog_space
+= z
;
550 r
= enqueue_job(j
, 0, 1);
551 if (r
== 1) return 1;
553 /* ready queue is full, so delay it again */
554 r
= enqueue_job(j
, j
->delay
, 0);
555 if (r
== 1) return 0;
562 /* return the number of jobs successfully kicked */
564 kick_buried_jobs(tube t
, unsigned int n
)
567 for (i
= 0; (i
< n
) && kick_buried_job(t
); ++i
);
571 /* return the number of jobs successfully kicked */
573 kick_delayed_jobs(tube t
, unsigned int n
)
576 for (i
= 0; (i
< n
) && kick_delayed_job(t
); ++i
);
581 kick_jobs(tube t
, unsigned int n
)
583 if (buried_job_p(t
)) return kick_buried_jobs(t
, n
);
584 return kick_delayed_jobs(t
, n
);
588 remove_buried_job(job j
)
590 if (!j
|| j
->state
!= JOB_STATE_BURIED
) return NULL
;
593 global_stat
.buried_ct
--;
594 j
->tube
->stat
.buried_ct
--;
600 remove_ready_job(job j
)
602 if (!j
|| j
->state
!= JOB_STATE_READY
) return NULL
;
603 j
= pq_remove(&j
->tube
->ready
, j
);
606 if (j
->pri
< URGENT_THRESHOLD
) {
607 global_stat
.urgent_ct
--;
608 j
->tube
->stat
.urgent_ct
--;
615 enqueue_waiting_conn(conn c
)
620 global_stat
.waiting_ct
++;
621 c
->type
|= CONN_TYPE_WAITING
;
622 for (i
= 0; i
< c
->watch
.used
; i
++) {
623 t
= c
->watch
.items
[i
];
624 t
->stat
.waiting_ct
++;
625 ms_append(&t
->waiting
, c
);
630 find_reserved_job_in_conn(conn c
, job j
)
632 return (j
&& j
->reserver
== c
&& j
->state
== JOB_STATE_RESERVED
) ? j
: NULL
;
636 touch_job(conn c
, job j
)
638 j
= find_reserved_job_in_conn(c
, j
);
640 j
->deadline_at
= now_usec() + j
->ttr
;
641 c
->soonest_job
= NULL
;
647 peek_job(uint64_t id
)
653 check_err(conn c
, const char *s
)
655 if (errno
== EAGAIN
) return;
656 if (errno
== EINTR
) return;
657 if (errno
== EWOULDBLOCK
) return;
664 /* Scan the given string for the sequence "\r\n" and return the line length.
665 * Always returns at least 2 if a match is found. Returns 0 if no match. */
667 scan_line_end(const char *s
, int size
)
671 match
= memchr(s
, '\r', size
- 1);
672 if (!match
) return 0;
674 /* this is safe because we only scan size - 1 chars above */
675 if (match
[1] == '\n') return match
- s
+ 2;
683 return scan_line_end(c
->cmd
, c
->cmd_read
);
686 /* parse the command line */
690 #define TEST_CMD(s,c,o) if (strncmp((s), (c), CONSTSTRLEN(c)) == 0) return (o);
691 TEST_CMD(c
->cmd
, CMD_PUT
, OP_PUT
);
692 TEST_CMD(c
->cmd
, CMD_PEEKJOB
, OP_PEEKJOB
);
693 TEST_CMD(c
->cmd
, CMD_PEEK_READY
, OP_PEEK_READY
);
694 TEST_CMD(c
->cmd
, CMD_PEEK_DELAYED
, OP_PEEK_DELAYED
);
695 TEST_CMD(c
->cmd
, CMD_PEEK_BURIED
, OP_PEEK_BURIED
);
696 TEST_CMD(c
->cmd
, CMD_RESERVE_TIMEOUT
, OP_RESERVE_TIMEOUT
);
697 TEST_CMD(c
->cmd
, CMD_RESERVE
, OP_RESERVE
);
698 TEST_CMD(c
->cmd
, CMD_DELETE
, OP_DELETE
);
699 TEST_CMD(c
->cmd
, CMD_RELEASE
, OP_RELEASE
);
700 TEST_CMD(c
->cmd
, CMD_BURY
, OP_BURY
);
701 TEST_CMD(c
->cmd
, CMD_KICK
, OP_KICK
);
702 TEST_CMD(c
->cmd
, CMD_TOUCH
, OP_TOUCH
);
703 TEST_CMD(c
->cmd
, CMD_JOBSTATS
, OP_JOBSTATS
);
704 TEST_CMD(c
->cmd
, CMD_STATS_TUBE
, OP_STATS_TUBE
);
705 TEST_CMD(c
->cmd
, CMD_STATS
, OP_STATS
);
706 TEST_CMD(c
->cmd
, CMD_USE
, OP_USE
);
707 TEST_CMD(c
->cmd
, CMD_WATCH
, OP_WATCH
);
708 TEST_CMD(c
->cmd
, CMD_IGNORE
, OP_IGNORE
);
709 TEST_CMD(c
->cmd
, CMD_LIST_TUBES_WATCHED
, OP_LIST_TUBES_WATCHED
);
710 TEST_CMD(c
->cmd
, CMD_LIST_TUBE_USED
, OP_LIST_TUBE_USED
);
711 TEST_CMD(c
->cmd
, CMD_LIST_TUBES
, OP_LIST_TUBES
);
712 TEST_CMD(c
->cmd
, CMD_QUIT
, OP_QUIT
);
716 /* Copy up to body_size trailing bytes into the job, then the rest into the cmd
717 * buffer. If c->in_job exists, this assumes that c->in_job->body is empty.
718 * This function is idempotent(). */
720 fill_extra_data(conn c
)
722 int extra_bytes
, job_data_bytes
= 0, cmd_bytes
;
724 if (!c
->fd
) return; /* the connection was closed */
725 if (!c
->cmd_len
) return; /* we don't have a complete command */
727 /* how many extra bytes did we read? */
728 extra_bytes
= c
->cmd_read
- c
->cmd_len
;
730 /* how many bytes should we put into the job body? */
732 job_data_bytes
= min(extra_bytes
, c
->in_job
->body_size
);
733 memcpy(c
->in_job
->body
, c
->cmd
+ c
->cmd_len
, job_data_bytes
);
734 c
->in_job_read
= job_data_bytes
;
735 } else if (c
->in_job_read
) {
736 /* we are in bit-bucket mode, throwing away data */
737 job_data_bytes
= min(extra_bytes
, c
->in_job_read
);
738 c
->in_job_read
-= job_data_bytes
;
741 /* how many bytes are left to go into the future cmd? */
742 cmd_bytes
= extra_bytes
- job_data_bytes
;
743 memmove(c
->cmd
, c
->cmd
+ c
->cmd_len
+ job_data_bytes
, cmd_bytes
);
744 c
->cmd_read
= cmd_bytes
;
745 c
->cmd_len
= 0; /* we no longer know the length of the new command */
749 enqueue_incoming_job(conn c
)
754 c
->in_job
= NULL
; /* the connection no longer owns this job */
757 /* check if the trailer is present and correct */
758 if (memcmp(j
->body
+ j
->body_size
- 2, "\r\n", 2)) {
760 return reply_msg(c
, MSG_EXPECTED_CRLF
);
765 return reply_serr(c
, MSG_DRAINING
);
768 if (j
->reserved_binlog_space
) return reply_serr(c
, MSG_INTERNAL_ERROR
);
769 j
->reserved_binlog_space
= binlog_reserve_space_put(j
);
770 if (!j
->reserved_binlog_space
) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
772 /* we have a complete job, so let's stick it in the pqueue */
773 r
= enqueue_job(j
, j
->delay
, 1);
774 if (r
< 0) return reply_serr(c
, MSG_INTERNAL_ERROR
);
776 op_ct
[OP_PUT
]++; /* stats */
777 global_stat
.total_jobs_ct
++;
778 j
->tube
->stat
.total_jobs_ct
++;
780 if (r
== 1) return reply_line(c
, STATE_SENDWORD
, MSG_INSERTED_FMT
, j
->id
);
782 /* out of memory trying to grow the queue, so it gets buried */
784 reply_line(c
, STATE_SENDWORD
, MSG_BURIED_FMT
, j
->id
);
790 return (now_usec() - started_at
) / 1000000;
794 fmt_stats(char *buf
, size_t size
, void *x
)
796 struct rusage ru
= {{0, 0}, {0, 0}};
797 getrusage(RUSAGE_SELF
, &ru
); /* don't care if it fails */
798 return snprintf(buf
, size
, STATS_FMT
,
799 global_stat
.urgent_ct
,
801 global_stat
.reserved_ct
,
802 get_delayed_job_ct(),
803 global_stat
.buried_ct
,
806 op_ct
[OP_PEEK_READY
],
807 op_ct
[OP_PEEK_DELAYED
],
808 op_ct
[OP_PEEK_BURIED
],
810 op_ct
[OP_RESERVE_TIMEOUT
],
821 op_ct
[OP_STATS_TUBE
],
822 op_ct
[OP_LIST_TUBES
],
823 op_ct
[OP_LIST_TUBE_USED
],
824 op_ct
[OP_LIST_TUBES_WATCHED
],
826 global_stat
.total_jobs_ct
,
830 count_cur_producers(),
832 global_stat
.waiting_ct
,
836 (int) ru
.ru_utime
.tv_sec
, (int) ru
.ru_utime
.tv_usec
,
837 (int) ru
.ru_stime
.tv_sec
, (int) ru
.ru_stime
.tv_usec
,
839 binlog_oldest_index(),
840 binlog_current_index(),
845 /* Read a priority value from the given buffer and place it in pri.
846 * Update end to point to the address after the last character consumed.
847 * Pri and end can be NULL. If they are both NULL, read_pri() will do the
848 * conversion and return the status code but not update any values. This is an
849 * easy way to check for errors.
850 * If end is NULL, read_pri will also check that the entire input string was
851 * consumed and return an error code otherwise.
852 * Return 0 on success, or nonzero on failure.
853 * If a failure occurs, pri and end are not modified. */
855 read_pri(unsigned int *pri
, const char *buf
, char **end
)
861 while (buf
[0] == ' ') buf
++;
862 if (!isdigit(buf
[0])) return -1;
863 tpri
= strtoul(buf
, &tend
, 10);
864 if (tend
== buf
) return -1;
865 if (errno
&& errno
!= ERANGE
) return -1;
866 if (!end
&& tend
[0] != '\0') return -1;
868 if (pri
) *pri
= tpri
;
869 if (end
) *end
= tend
;
873 /* Read a delay value from the given buffer and place it in delay.
874 * The interface and behavior are analogous to read_pri(). */
876 read_delay(usec
*delay
, const char *buf
, char **end
)
879 unsigned int delay_sec
;
881 r
= read_pri(&delay_sec
, buf
, end
);
883 *delay
= ((usec
) delay_sec
) * 1000000;
887 /* Read a timeout value from the given buffer and place it in ttr.
888 * The interface and behavior are the same as in read_delay(). */
890 read_ttr(usec
*ttr
, const char *buf
, char **end
)
892 return read_delay(ttr
, buf
, end
);
896 wait_for_job(conn c
, int timeout
)
900 c
->state
= STATE_WAIT
;
901 enqueue_waiting_conn(c
);
903 /* Set the pending timeout to the requested timeout amount */
904 c
->pending_timeout
= timeout
;
906 /* this conn is waiting, but we want to know if they hang up */
907 r
= conn_update_evq(c
, EV_READ
| EV_PERSIST
);
908 if (r
== -1) return twarnx("update events failed"), conn_close(c
);
911 typedef int(*fmt_fn
)(char *, size_t, void *);
914 do_stats(conn c
, fmt_fn fmt
, void *data
)
918 /* first, measure how big a buffer we will need */
919 stats_len
= fmt(NULL
, 0, data
) + 16;
921 c
->out_job
= allocate_job(stats_len
); /* fake job to hold stats data */
922 if (!c
->out_job
) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
924 /* now actually format the stats data */
925 r
= fmt(c
->out_job
->body
, stats_len
, data
);
926 /* and set the actual body size */
927 c
->out_job
->body_size
= r
;
928 if (r
> stats_len
) return reply_serr(c
, MSG_INTERNAL_ERROR
);
931 return reply_line(c
, STATE_SENDJOB
, "OK %d\r\n", r
- 2);
935 do_list_tubes(conn c
, ms l
)
941 /* first, measure how big a buffer we will need */
942 resp_z
= 6; /* initial "---\n" and final "\r\n" */
943 for (i
= 0; i
< l
->used
; i
++) {
945 resp_z
+= 3 + strlen(t
->name
); /* including "- " and "\n" */
948 c
->out_job
= allocate_job(resp_z
); /* fake job to hold response data */
949 if (!c
->out_job
) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
951 /* now actually format the response */
952 buf
= c
->out_job
->body
;
953 buf
+= snprintf(buf
, 5, "---\n");
954 for (i
= 0; i
< l
->used
; i
++) {
956 buf
+= snprintf(buf
, 4 + strlen(t
->name
), "- %s\n", t
->name
);
962 return reply_line(c
, STATE_SENDJOB
, "OK %d\r\n", resp_z
- 2);
966 fmt_job_stats(char *buf
, size_t size
, job j
)
972 if (j
->state
== JOB_STATE_RESERVED
|| j
->state
== JOB_STATE_DELAYED
) {
973 time_left
= (j
->deadline_at
- t
) / 1000000;
977 return snprintf(buf
, size
,
983 "delay: %" PRIu64
"\n"
985 "time-left: %" PRIu64
"\n"
997 (t
- j
->created_at
) / 1000000,
1009 fmt_stats_tube(char *buf
, size_t size
, tube t
)
1011 return snprintf(buf
, size
, STATS_TUBE_FMT
,
1015 t
->stat
.reserved_ct
,
1018 t
->stat
.total_jobs_ct
,
1021 t
->stat
.waiting_ct
);
1025 maybe_enqueue_incoming_job(conn c
)
1029 /* do we have a complete job? */
1030 if (c
->in_job_read
== j
->body_size
) return enqueue_incoming_job(c
);
1032 /* otherwise we have incomplete data, so just keep waiting */
1033 c
->state
= STATE_WANTDATA
;
1038 remove_this_reserved_job(conn c
, job j
)
1042 global_stat
.reserved_ct
--;
1043 j
->tube
->stat
.reserved_ct
--;
1046 c
->soonest_job
= NULL
;
1047 if (!job_list_any_p(&c
->reserved_jobs
)) conn_remove(c
);
1052 remove_reserved_job(conn c
, job j
)
1054 return remove_this_reserved_job(c
, find_reserved_job_in_conn(c
, j
));
1058 name_is_ok(const char *name
, size_t max
)
1060 size_t len
= strlen(name
);
1061 return len
> 0 && len
<= max
&&
1062 strspn(name
, NAME_CHARS
) == len
&& name
[0] != '-';
1066 prot_remove_tube(tube t
)
1068 ms_remove(&tubes
, t
);
1072 dispatch_cmd(conn c
)
1074 int r
, i
, timeout
= -1;
1079 char *size_buf
, *delay_buf
, *ttr_buf
, *pri_buf
, *end_buf
, *name
;
1080 unsigned int pri
, body_size
;
1085 /* NUL-terminate this string so we can use strtol and friends */
1086 c
->cmd
[c
->cmd_len
- 2] = '\0';
1088 /* check for possible maliciousness */
1089 if (strlen(c
->cmd
) != c
->cmd_len
- 2) {
1090 return reply_msg(c
, MSG_BAD_FORMAT
);
1093 type
= which_cmd(c
);
1094 dprintf("got %s command: \"%s\"\n", op_names
[(int) type
], c
->cmd
);
1098 r
= read_pri(&pri
, c
->cmd
+ 4, &delay_buf
);
1099 if (r
) return reply_msg(c
, MSG_BAD_FORMAT
);
1101 r
= read_delay(&delay
, delay_buf
, &ttr_buf
);
1102 if (r
) return reply_msg(c
, MSG_BAD_FORMAT
);
1104 r
= read_ttr(&ttr
, ttr_buf
, &size_buf
);
1105 if (r
) return reply_msg(c
, MSG_BAD_FORMAT
);
1108 body_size
= strtoul(size_buf
, &end_buf
, 10);
1109 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1111 if (body_size
> job_data_size_limit
) {
1112 return reply_msg(c
, MSG_JOB_TOO_BIG
);
1115 /* don't allow trailing garbage */
1116 if (end_buf
[0] != '\0') return reply_msg(c
, MSG_BAD_FORMAT
);
1118 conn_set_producer(c
);
1120 c
->in_job
= make_job(pri
, delay
, ttr
? : 1, body_size
+ 2, c
->use
);
1124 /* throw away the job body and respond with OUT_OF_MEMORY */
1126 /* Invert the meaning of in_job_read while throwing away data -- it
1127 * counts the bytes that remain to be thrown away. */
1128 c
->in_job_read
= body_size
+ 2;
1131 if (c
->in_job_read
== 0) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
1133 c
->state
= STATE_BITBUCKET
;
1139 /* it's possible we already have a complete job */
1140 maybe_enqueue_incoming_job(c
);
1144 /* don't allow trailing garbage */
1145 if (c
->cmd_len
!= CMD_PEEK_READY_LEN
+ 2) {
1146 return reply_msg(c
, MSG_BAD_FORMAT
);
1150 j
= job_copy(pq_peek(&c
->use
->ready
));
1152 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1154 reply_job(c
, j
, MSG_FOUND
);
1156 case OP_PEEK_DELAYED
:
1157 /* don't allow trailing garbage */
1158 if (c
->cmd_len
!= CMD_PEEK_DELAYED_LEN
+ 2) {
1159 return reply_msg(c
, MSG_BAD_FORMAT
);
1163 j
= job_copy(pq_peek(&c
->use
->delay
));
1165 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1167 reply_job(c
, j
, MSG_FOUND
);
1169 case OP_PEEK_BURIED
:
1170 /* don't allow trailing garbage */
1171 if (c
->cmd_len
!= CMD_PEEK_BURIED_LEN
+ 2) {
1172 return reply_msg(c
, MSG_BAD_FORMAT
);
1176 j
= job_copy(buried_job_p(c
->use
)? j
= c
->use
->buried
.next
: NULL
);
1178 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1180 reply_job(c
, j
, MSG_FOUND
);
1184 id
= strtoull(c
->cmd
+ CMD_PEEKJOB_LEN
, &end_buf
, 10);
1185 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1188 /* So, peek is annoying, because some other connection might free the
1189 * job while we are still trying to write it out. So we copy it and
1190 * then free the copy when it's done sending. */
1191 j
= job_copy(peek_job(id
));
1193 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1195 reply_job(c
, j
, MSG_FOUND
);
1197 case OP_RESERVE_TIMEOUT
:
1199 timeout
= strtol(c
->cmd
+ CMD_RESERVE_TIMEOUT_LEN
, &end_buf
, 10);
1200 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1201 case OP_RESERVE
: /* FALLTHROUGH */
1202 /* don't allow trailing garbage */
1203 if (type
== OP_RESERVE
&& c
->cmd_len
!= CMD_RESERVE_LEN
+ 2) {
1204 return reply_msg(c
, MSG_BAD_FORMAT
);
1210 if (conn_has_close_deadline(c
) && !conn_ready(c
)) {
1211 return reply_msg(c
, MSG_DEADLINE_SOON
);
1214 /* try to get a new job for this guy */
1215 wait_for_job(c
, timeout
);
1220 id
= strtoull(c
->cmd
+ CMD_DELETE_LEN
, &end_buf
, 10);
1221 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1225 j
= remove_reserved_job(c
, j
) ? :
1226 remove_ready_job(j
) ? :
1227 remove_buried_job(j
);
1229 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1231 j
->state
= JOB_STATE_INVALID
;
1232 r
= binlog_write_job(j
);
1235 if (!r
) return reply_serr(c
, MSG_INTERNAL_ERROR
);
1237 reply(c
, MSG_DELETED
, MSG_DELETED_LEN
, STATE_SENDWORD
);
1241 id
= strtoull(c
->cmd
+ CMD_RELEASE_LEN
, &pri_buf
, 10);
1242 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1244 r
= read_pri(&pri
, pri_buf
, &delay_buf
);
1245 if (r
) return reply_msg(c
, MSG_BAD_FORMAT
);
1247 r
= read_delay(&delay
, delay_buf
, NULL
);
1248 if (r
) return reply_msg(c
, MSG_BAD_FORMAT
);
1251 j
= remove_reserved_job(c
, job_find(id
));
1253 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1255 /* We want to update the delay deadline on disk, so reserve space for
1258 z
= binlog_reserve_space_update(j
);
1259 if (!z
) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
1260 j
->reserved_binlog_space
+= z
;
1267 r
= enqueue_job(j
, delay
, !!delay
);
1268 if (r
< 0) return reply_serr(c
, MSG_INTERNAL_ERROR
);
1270 return reply(c
, MSG_RELEASED
, MSG_RELEASED_LEN
, STATE_SENDWORD
);
1273 /* out of memory trying to grow the queue, so it gets buried */
1275 reply(c
, MSG_BURIED
, MSG_BURIED_LEN
, STATE_SENDWORD
);
1279 id
= strtoull(c
->cmd
+ CMD_BURY_LEN
, &pri_buf
, 10);
1280 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1282 r
= read_pri(&pri
, pri_buf
, NULL
);
1283 if (r
) return reply_msg(c
, MSG_BAD_FORMAT
);
1286 j
= remove_reserved_job(c
, job_find(id
));
1288 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1292 if (!r
) return reply_serr(c
, MSG_INTERNAL_ERROR
);
1293 reply(c
, MSG_BURIED
, MSG_BURIED_LEN
, STATE_SENDWORD
);
1297 count
= strtoul(c
->cmd
+ CMD_KICK_LEN
, &end_buf
, 10);
1298 if (end_buf
== c
->cmd
+ CMD_KICK_LEN
) {
1299 return reply_msg(c
, MSG_BAD_FORMAT
);
1301 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1305 i
= kick_jobs(c
->use
, count
);
1307 return reply_line(c
, STATE_SENDWORD
, "KICKED %u\r\n", i
);
1310 id
= strtoull(c
->cmd
+ CMD_TOUCH_LEN
, &end_buf
, 10);
1311 if (errno
) return twarn("strtoull"), reply_msg(c
, MSG_BAD_FORMAT
);
1315 j
= touch_job(c
, job_find(id
));
1318 reply(c
, MSG_TOUCHED
, MSG_TOUCHED_LEN
, STATE_SENDWORD
);
1320 return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1324 /* don't allow trailing garbage */
1325 if (c
->cmd_len
!= CMD_STATS_LEN
+ 2) {
1326 return reply_msg(c
, MSG_BAD_FORMAT
);
1331 do_stats(c
, fmt_stats
, NULL
);
1335 id
= strtoull(c
->cmd
+ CMD_JOBSTATS_LEN
, &end_buf
, 10);
1336 if (errno
) return reply_msg(c
, MSG_BAD_FORMAT
);
1341 if (!j
) return reply(c
, MSG_NOTFOUND
, MSG_NOTFOUND_LEN
, STATE_SENDWORD
);
1343 if (!j
->tube
) return reply_serr(c
, MSG_INTERNAL_ERROR
);
1344 do_stats(c
, (fmt_fn
) fmt_job_stats
, j
);
1347 name
= c
->cmd
+ CMD_STATS_TUBE_LEN
;
1348 if (!name_is_ok(name
, 200)) return reply_msg(c
, MSG_BAD_FORMAT
);
1352 t
= tube_find(name
);
1353 if (!t
) return reply_msg(c
, MSG_NOTFOUND
);
1355 do_stats(c
, (fmt_fn
) fmt_stats_tube
, t
);
1359 /* don't allow trailing garbage */
1360 if (c
->cmd_len
!= CMD_LIST_TUBES_LEN
+ 2) {
1361 return reply_msg(c
, MSG_BAD_FORMAT
);
1365 do_list_tubes(c
, &tubes
);
1367 case OP_LIST_TUBE_USED
:
1368 /* don't allow trailing garbage */
1369 if (c
->cmd_len
!= CMD_LIST_TUBE_USED_LEN
+ 2) {
1370 return reply_msg(c
, MSG_BAD_FORMAT
);
1374 reply_line(c
, STATE_SENDWORD
, "USING %s\r\n", c
->use
->name
);
1376 case OP_LIST_TUBES_WATCHED
:
1377 /* don't allow trailing garbage */
1378 if (c
->cmd_len
!= CMD_LIST_TUBES_WATCHED_LEN
+ 2) {
1379 return reply_msg(c
, MSG_BAD_FORMAT
);
1383 do_list_tubes(c
, &c
->watch
);
1386 name
= c
->cmd
+ CMD_USE_LEN
;
1387 if (!name_is_ok(name
, 200)) return reply_msg(c
, MSG_BAD_FORMAT
);
1390 TUBE_ASSIGN(t
, tube_find_or_make(name
));
1391 if (!t
) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
1394 TUBE_ASSIGN(c
->use
, t
);
1395 TUBE_ASSIGN(t
, NULL
);
1398 reply_line(c
, STATE_SENDWORD
, "USING %s\r\n", c
->use
->name
);
1401 name
= c
->cmd
+ CMD_WATCH_LEN
;
1402 if (!name_is_ok(name
, 200)) return reply_msg(c
, MSG_BAD_FORMAT
);
1405 TUBE_ASSIGN(t
, tube_find_or_make(name
));
1406 if (!t
) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
1409 if (!ms_contains(&c
->watch
, t
)) r
= ms_append(&c
->watch
, t
);
1410 TUBE_ASSIGN(t
, NULL
);
1411 if (!r
) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
1413 reply_line(c
, STATE_SENDWORD
, "WATCHING %d\r\n", c
->watch
.used
);
1416 name
= c
->cmd
+ CMD_IGNORE_LEN
;
1417 if (!name_is_ok(name
, 200)) return reply_msg(c
, MSG_BAD_FORMAT
);
1421 for (i
= 0; i
< c
->watch
.used
; i
++) {
1422 t
= c
->watch
.items
[i
];
1423 if (strncmp(t
->name
, name
, MAX_TUBE_NAME_LEN
) == 0) break;
1427 if (t
&& c
->watch
.used
< 2) return reply_msg(c
, MSG_NOT_IGNORED
);
1429 if (t
) ms_remove(&c
->watch
, t
); /* may free t if refcount => 0 */
1432 reply_line(c
, STATE_SENDWORD
, "WATCHING %d\r\n", c
->watch
.used
);
1438 return reply_msg(c
, MSG_UNKNOWN_COMMAND
);
1442 /* There are three reasons this function may be called. We need to check for
1445 * 1. A reserved job has run out of time.
1446 * 2. A waiting client's reserved job has entered the safety margin.
1447 * 3. A waiting client's requested timeout has occurred.
1449 * If any of these happen, we must do the appropriate thing. */
1451 h_conn_timeout(conn c
)
1453 int r
, should_timeout
= 0;
1456 /* Check if the client was trying to reserve a job. */
1457 if (conn_waiting(c
) && conn_has_close_deadline(c
)) should_timeout
= 1;
1459 /* Check if any reserved jobs have run out of time. We should do this
1460 * whether or not the client is waiting for a new reservation. */
1461 while ((j
= soonest_job(c
))) {
1462 if (j
->deadline_at
>= now_usec()) break;
1464 /* This job is in the middle of being written out. If we return it to
1465 * the ready queue, someone might free it before we finish writing it
1466 * out to the socket. So we'll copy it here and free the copy when it's
1468 if (j
== c
->out_job
) {
1469 c
->out_job
= job_copy(c
->out_job
);
1472 timeout_ct
++; /* stats */
1474 r
= enqueue_job(remove_this_reserved_job(c
, j
), 0, 0);
1475 if (r
< 1) bury_job(j
, 0); /* out of memory, so bury it */
1476 r
= conn_update_evq(c
, c
->evq
.ev_events
);
1477 if (r
== -1) return twarnx("conn_update_evq() failed"), conn_close(c
);
1480 if (should_timeout
) {
1481 dprintf("conn_waiting(%p) = %d\n", c
, conn_waiting(c
));
1482 return reply_msg(remove_waiting_conn(c
), MSG_DEADLINE_SOON
);
1483 } else if (conn_waiting(c
) && c
->pending_timeout
>= 0) {
1484 dprintf("conn_waiting(%p) = %d\n", c
, conn_waiting(c
));
1485 c
->pending_timeout
= -1;
1486 return reply_msg(remove_waiting_conn(c
), MSG_TIMED_OUT
);
1491 enter_drain_mode(int sig
)
1508 r
= conn_update_evq(c
, EV_READ
| EV_PERSIST
);
1509 if (r
== -1) return twarnx("update events failed"), conn_close(c
);
1511 /* was this a peek or stats command? */
1512 if (c
->out_job
&& c
->out_job
->state
== JOB_STATE_COPY
) job_free(c
->out_job
);
1515 c
->reply_sent
= 0; /* now that we're done, reset this */
1516 c
->state
= STATE_WANTCOMMAND
;
1524 struct iovec iov
[2];
1527 case STATE_WANTCOMMAND
:
1528 r
= read(c
->fd
, c
->cmd
+ c
->cmd_read
, LINE_BUF_SIZE
- c
->cmd_read
);
1529 if (r
== -1) return check_err(c
, "read()");
1530 if (r
== 0) return conn_close(c
); /* the client hung up */
1532 c
->cmd_read
+= r
; /* we got some bytes */
1534 c
->cmd_len
= cmd_len(c
); /* find the EOL */
1536 /* yay, complete command line */
1537 if (c
->cmd_len
) return do_cmd(c
);
1539 /* c->cmd_read > LINE_BUF_SIZE can't happen */
1541 /* command line too long? */
1542 if (c
->cmd_read
== LINE_BUF_SIZE
) {
1543 c
->cmd_read
= 0; /* discard the input so far */
1544 return reply_msg(c
, MSG_BAD_FORMAT
);
1547 /* otherwise we have an incomplete line, so just keep waiting */
1549 case STATE_BITBUCKET
:
1550 /* Invert the meaning of in_job_read while throwing away data -- it
1551 * counts the bytes that remain to be thrown away. */
1552 to_read
= min(c
->in_job_read
, BUCKET_BUF_SIZE
);
1553 r
= read(c
->fd
, bucket
, to_read
);
1554 if (r
== -1) return check_err(c
, "read()");
1555 if (r
== 0) return conn_close(c
); /* the client hung up */
1557 c
->in_job_read
-= r
; /* we got some bytes */
1559 /* (c->in_job_read < 0) can't happen */
1561 if (c
->in_job_read
== 0) return reply_serr(c
, MSG_OUT_OF_MEMORY
);
1563 case STATE_WANTDATA
:
1566 r
= read(c
->fd
, j
->body
+ c
->in_job_read
, j
->body_size
-c
->in_job_read
);
1567 if (r
== -1) return check_err(c
, "read()");
1568 if (r
== 0) return conn_close(c
); /* the client hung up */
1570 c
->in_job_read
+= r
; /* we got some bytes */
1572 /* (j->in_job_read > j->body_size) can't happen */
1574 maybe_enqueue_incoming_job(c
);
1576 case STATE_SENDWORD
:
1577 r
= write(c
->fd
, c
->reply
+ c
->reply_sent
, c
->reply_len
- c
->reply_sent
);
1578 if (r
== -1) return check_err(c
, "write()");
1579 if (r
== 0) return conn_close(c
); /* the client hung up */
1581 c
->reply_sent
+= r
; /* we got some bytes */
1583 /* (c->reply_sent > c->reply_len) can't happen */
1585 if (c
->reply_sent
== c
->reply_len
) return reset_conn(c
);
1587 /* otherwise we sent an incomplete reply, so just keep waiting */
1592 iov
[0].iov_base
= (void *)(c
->reply
+ c
->reply_sent
);
1593 iov
[0].iov_len
= c
->reply_len
- c
->reply_sent
; /* maybe 0 */
1594 iov
[1].iov_base
= j
->body
+ c
->out_job_sent
;
1595 iov
[1].iov_len
= j
->body_size
- c
->out_job_sent
;
1597 r
= writev(c
->fd
, iov
, 2);
1598 if (r
== -1) return check_err(c
, "writev()");
1599 if (r
== 0) return conn_close(c
); /* the client hung up */
1601 /* update the sent values */
1603 if (c
->reply_sent
>= c
->reply_len
) {
1604 c
->out_job_sent
+= c
->reply_sent
- c
->reply_len
;
1605 c
->reply_sent
= c
->reply_len
;
1608 /* (c->out_job_sent > j->body_size) can't happen */
1611 if (c
->out_job_sent
== j
->body_size
) return reset_conn(c
);
1613 /* otherwise we sent incomplete data, so just keep waiting */
1615 case STATE_WAIT
: /* keep an eye out in case they hang up */
1616 /* but don't hang up just because our buffer is full */
1617 if (LINE_BUF_SIZE
- c
->cmd_read
< 1) break;
1619 r
= read(c
->fd
, c
->cmd
+ c
->cmd_read
, LINE_BUF_SIZE
- c
->cmd_read
);
1620 if (r
== -1) return check_err(c
, "read()");
1621 if (r
== 0) return conn_close(c
); /* the client hung up */
1622 c
->cmd_read
+= r
; /* we got some bytes */
1626 #define want_command(c) ((c)->fd && ((c)->state == STATE_WANTCOMMAND))
1627 #define cmd_data_ready(c) (want_command(c) && (c)->cmd_read)
1630 h_conn(const int fd
, const short which
, conn c
)
1633 twarnx("Argh! event fd doesn't match conn fd.");
1635 return conn_close(c
);
1641 event_add(&c
->evq
, NULL
); /* seems to be necessary */
1644 /* fall through... */
1646 /* fall through... */
1651 while (cmd_data_ready(c
) && (c
->cmd_len
= cmd_len(c
))) do_cmd(c
);
1662 while ((j
= delay_q_peek())) {
1663 if (j
->deadline_at
> t
) break;
1665 r
= enqueue_job(j
, 0, 0);
1666 if (r
< 1) bury_job(j
, 0); /* out of memory, so bury it */
1669 set_main_delay_timeout();
1673 h_accept(const int fd
, const short which
, struct event
*ev
)
1678 struct sockaddr addr
;
1680 if (which
== EV_TIMEOUT
) return h_delay();
1682 addrlen
= sizeof addr
;
1683 cfd
= accept(fd
, &addr
, &addrlen
);
1685 if (errno
!= EAGAIN
&& errno
!= EWOULDBLOCK
) twarn("accept()");
1686 if (errno
== EMFILE
) brake();
1690 flags
= fcntl(cfd
, F_GETFL
, 0);
1691 if (flags
< 0) return twarn("getting flags"), close(cfd
), v();
1693 r
= fcntl(cfd
, F_SETFL
, flags
| O_NONBLOCK
);
1694 if (r
< 0) return twarn("setting O_NONBLOCK"), close(cfd
), v();
1696 c
= make_conn(cfd
, STATE_WANTCOMMAND
, default_tube
, default_tube
);
1697 if (!c
) return twarnx("make_conn() failed"), close(cfd
), brake();
1699 dprintf("accepted conn, fd=%d\n", cfd
);
1700 r
= conn_set_evq(c
, EV_READ
| EV_PERSIST
, (evh
) h_conn
);
1701 if (r
== -1) return twarnx("conn_set_evq() failed"), close(cfd
), brake();
1707 started_at
= now_usec();
1708 memset(op_ct
, 0, sizeof(op_ct
));
1710 ms_init(&tubes
, NULL
, NULL
);
1712 TUBE_ASSIGN(default_tube
, tube_find_or_make("default"));
1713 if (!default_tube
) twarnx("Out of memory during startup!");
1717 prot_replay_binlog(job binlog_jobs
)
1723 for (j
= binlog_jobs
->next
; j
!= binlog_jobs
; j
= nj
) {
1726 binlog_reserve_space_update(j
); /* reserve space for a delete */
1729 case JOB_STATE_BURIED
:
1732 case JOB_STATE_DELAYED
:
1733 if (started_at
< j
->deadline_at
) {
1734 delay
= j
->deadline_at
- started_at
;
1738 r
= enqueue_job(j
, delay
, 0);
1739 if (r
< 1) twarnx("error processing binlog job %llu", j
->id
);