static fqd_queue_impl_data queue_jlog_setup(fq_rk *qname, uint32_t *count) {
char qpath[PATH_MAX];
jlog_id chkpt;
struct queue_jlog *d;
d = calloc(1, sizeof(*d));
d->auto_chkpt = true;
fqd_config_construct_queue_path(qpath, sizeof(qpath), qname);
d->qpath = strdup(qpath);
d->writer = jlog_new(d->qpath);
if(jlog_ctx_open_writer(d->writer) != 0) {
jlog_ctx_close(d->writer);
d->writer = jlog_new(d->qpath);
if(jlog_ctx_init(d->writer) != 0) {
fq_debug(FQ_DEBUG_IO, "jlog init: %s\n", jlog_ctx_err_string(d->writer));
goto bail;
}
jlog_ctx_close(d->writer);
d->writer = jlog_new(d->qpath);
if(jlog_ctx_open_writer(d->writer) != 0) {
fq_debug(FQ_DEBUG_IO, "jlog writer: %s\n", jlog_ctx_err_string(d->writer));
goto bail;
}
}
d->reader = jlog_new(d->qpath);
if(jlog_get_checkpoint(d->reader, "fq", &chkpt) != 0) {
if(jlog_ctx_add_subscriber(d->reader, "fq", JLOG_BEGIN) != 0) {
fq_debug(FQ_DEBUG_IO, "jlog add sub: %s\n", jlog_ctx_err_string(d->reader));
goto bail;
}
}
if(jlog_ctx_open_reader(d->reader, "fq") != 0) {
fq_debug(FQ_DEBUG_IO, "jlog: %s\n", jlog_ctx_err_string(d->reader));
goto bail;
}
uuid_generate(d->uuid);
write_sig(d);
*count = 0;
(void)qname;
return d;
bail:
if(d->writer) jlog_ctx_close(d->writer);
if(d->reader) jlog_ctx_close(d->reader);
free(d->qpath);
free(d);
return NULL;
}
int jlog_ctx_add_subscriber(jlog_ctx *ctx, const char *s, jlog_position whence) {
jlog_id chkpt;
jlog_ctx *tmpctx = NULL;
jlog_file *jchkpt;
ctx->last_error = JLOG_ERR_SUCCESS;
jchkpt = __jlog_open_named_checkpoint(ctx, s, O_CREAT|O_EXCL);
if(!jchkpt) {
ctx->last_error = JLOG_ERR_SUBSCRIBER_EXISTS;
ctx->last_errno = EEXIST;
return -1;
}
jlog_file_close(jchkpt);
if(whence == JLOG_BEGIN) {
memset(&chkpt, 0, sizeof(chkpt));
jlog_ctx_first_log_id(ctx, &chkpt);
if(__jlog_set_checkpoint(ctx, s, &chkpt) != 0) {
ctx->last_error = JLOG_ERR_CHECKPOINT;
ctx->last_errno = 0;
return -1;
}
return 0;
}
if(whence == JLOG_END) {
jlog_id start, finish;
memset(&chkpt, 0, sizeof(chkpt));
if(__jlog_open_metastore(ctx) != 0) SYS_FAIL(JLOG_ERR_META_OPEN);
if(__jlog_restore_metastore(ctx, 0))
SYS_FAIL(JLOG_ERR_META_OPEN);
chkpt.log = ctx->storage.log;
if(__jlog_set_checkpoint(ctx, s, &chkpt) != 0)
SYS_FAIL(JLOG_ERR_CHECKPOINT);
tmpctx = jlog_new(ctx->path);
if(jlog_ctx_open_reader(tmpctx, s) < 0) goto finish;
if(jlog_ctx_read_interval(tmpctx, &start, &finish) < 0) goto finish;
jlog_ctx_close(tmpctx);
tmpctx = NULL;
if(__jlog_set_checkpoint(ctx, s, &finish) != 0)
SYS_FAIL(JLOG_ERR_CHECKPOINT);
return 0;
}
ctx->last_error = JLOG_ERR_NOT_SUPPORTED;
finish:
if(tmpctx) jlog_ctx_close(tmpctx);
return -1;
}
/*
* returns -1 when the incoming checkpoint is out of range of the log
* returns -2 if there was an error actually setting the checkpoint
*/
static int queue_log_add_checkpoint(fqd_queue_impl_data data, const char *name, const fq_msgid *id)
{
struct queue_jlog *d = (struct queue_jlog *)data;
jlog_id jid = {
.log = id->id.u32.p1,
.marker = id->id.u32.p2
};
/* ensure the checkpoint makes sense */
jlog_id first = {
.log = 0,
.marker = 0
};
jlog_id last = {
.log = 0,
.marker = 0
};
jlog_ctx_first_log_id(d->reader, &first);
jlog_ctx_last_log_id(d->reader, &last);
if (! (jid.log >= first.log && jid.log <= last.log &&
jid.marker >= first.marker && jid.marker <= last.marker)) {
return -1;
}
char **subs;
int sub_count = jlog_ctx_list_subscribers(d->reader, &subs);
int have_it = 0;
for (int i = 0; i < sub_count; i++) {
have_it += strcmp(subs[i], name) == 0 ? 1 : 0;
}
if (have_it == 0) {
jlog_ctx_add_subscriber(d->reader, name, JLOG_BEGIN);
}
if (jlog_ctx_read_checkpoint(d->reader, &jid) == -1) {
/*
If we failed to checkpoint we are in a situation where the 'add_subscriber' call above put
them at the beginning of the log so we have to remove the subscriber if we just added them
However, if they already existed and had a previous good checkpoint, leave it alone
*/
if (have_it == 0) {
jlog_ctx_remove_subscriber(d->reader, name);
}
return -2;
}
return 0;
}
/*
* return -1 if the subscriber doesn't exist
* return 0 on success
*/
static int queue_log_remove_checkpoint(fqd_queue_impl_data data, const char *name)
{
struct queue_jlog *d = (struct queue_jlog *)data;
if (jlog_ctx_remove_subscriber(d->reader, name) == 0) {
return -1;
}
return 0;
}
/*
* return -1 if the subscriber doesn't exist
* return -2 if we can't reset the checkpoint
* return 0 on success
*/
static int queue_log_reset_to_checkpoint(fqd_queue_impl_data data, const char *name)
{
struct queue_jlog *d = (struct queue_jlog *)data;
char **subs;
int sub_count = jlog_ctx_list_subscribers(d->reader, &subs);
int have_it = 0;
for (int i = 0; i < sub_count; i++) {
have_it += strcmp(subs[i], name) == 0 ? 1 : 0;
}
if (have_it == 0) {
return -1;
}
jlog_id checkpoint;
if (jlog_get_checkpoint(d->reader, name, &checkpoint) == -1) {
return -2;
}
if (jlog_ctx_read_checkpoint(d->reader, &checkpoint) == -1) {
return -2;
}
return 0;
}
static int write_sig(struct queue_jlog *d) {
char sigfile[PATH_MAX];
int fd;
snprintf(sigfile, sizeof(sigfile), "%s/.sig", d->qpath);
fd = open(sigfile, O_CREAT|O_TRUNC|O_WRONLY, 0640);
if(fd < 0) return -1;
write(fd, d->uuid, 16);
close(fd);
return 0;
}
static int read_sig(struct queue_jlog *d, uuid_t out) {
char sigfile[PATH_MAX];
int fd, rv;
snprintf(sigfile, sizeof(sigfile), "%s/.sig", d->qpath);
fd = open(sigfile, O_RDONLY);
if(fd < 0) return -1;
rv = read(fd, out, 16);
close(fd);
return (rv == 16) ? 0 : -1;
}
static fqd_queue_impl_data queue_jlog_setup(fq_rk *qname, uint32_t *count) {
char qpath[PATH_MAX];
jlog_id chkpt;
struct queue_jlog *d;
d = calloc(1, sizeof(*d));
d->auto_chkpt = true;
fqd_config_construct_queue_path(qpath, sizeof(qpath), qname);
d->qpath = strdup(qpath);
d->writer = jlog_new(d->qpath);
jlog_ctx_set_pre_commit_buffer_size(d->writer, 1024 * 1024);
jlog_ctx_set_multi_process(d->writer, 0);
jlog_ctx_set_use_compression(d->writer, 1);
if(jlog_ctx_open_writer(d->writer) != 0) {
jlog_ctx_close(d->writer);
d->writer = jlog_new(d->qpath);
jlog_ctx_set_pre_commit_buffer_size(d->writer, 1024 * 1024);
jlog_ctx_set_multi_process(d->writer, 0);
jlog_ctx_set_use_compression(d->writer, 1);
if(jlog_ctx_init(d->writer) != 0) {
fq_debug(FQ_DEBUG_IO, "jlog init: %s\n", jlog_ctx_err_string(d->writer));
goto bail;
}
jlog_ctx_close(d->writer);
d->writer = jlog_new(d->qpath);
jlog_ctx_set_pre_commit_buffer_size(d->writer, 1024 * 1024);
jlog_ctx_set_multi_process(d->writer, 0);
jlog_ctx_set_use_compression(d->writer, 1);
if(jlog_ctx_open_writer(d->writer) != 0) {
fq_debug(FQ_DEBUG_IO, "jlog writer: %s\n", jlog_ctx_err_string(d->writer));
goto bail;
}
}
/* 128MB journal chunks */
jlog_ctx_alter_journal_size(d->writer, 128 * 1024 * 1024);
d->reader = jlog_new(d->qpath);
if(jlog_get_checkpoint(d->reader, "fq", &chkpt) != 0) {
if(jlog_ctx_add_subscriber(d->reader, "fq", JLOG_BEGIN) != 0) {
fq_debug(FQ_DEBUG_IO, "jlog add sub: %s\n", jlog_ctx_err_string(d->reader));
goto bail;
}
}
if(jlog_ctx_open_reader(d->reader, "fq") != 0) {
fq_debug(FQ_DEBUG_IO, "jlog: %s\n", jlog_ctx_err_string(d->reader));
goto bail;
}
uuid_generate(d->uuid);
write_sig(d);
*count = d->count = jlog_ctx_read_interval(d->reader, &d->start, &d->finish);
(void)qname;
return d;
bail:
if(d->writer) jlog_ctx_close(d->writer);
if(d->reader) jlog_ctx_close(d->reader);
free(d->qpath);
free(d);
return NULL;
}
int
noit_jlog_handler(eventer_t e, int mask, void *closure,
struct timeval *now) {
eventer_t newe;
pthread_t tid;
pthread_attr_t tattr;
int newmask = EVENTER_READ | EVENTER_EXCEPTION;
acceptor_closure_t *ac = closure;
noit_jlog_closure_t *jcl = ac->service_ctx;
char errbuff[256];
const char *errstr = "unknown error";
if(mask & EVENTER_EXCEPTION || (jcl && jcl->wants_shutdown)) {
int len, nlen;
socket_error:
/* Exceptions cause us to simply snip the connection */
len = strlen(errstr);
nlen = htonl(0 - len);
e->opset->write(e->fd, &nlen, sizeof(nlen), &newmask, e);
e->opset->write(e->fd, errstr, strlen(errstr), &newmask, e);
eventer_remove_fd(e->fd);
e->opset->close(e->fd, &newmask, e);
if(jcl) noit_jlog_closure_free(jcl);
acceptor_closure_free(ac);
return 0;
}
if(!ac->service_ctx) {
noit_log_stream_t ls;
const char *logname, *type;
int first_attempt = 1;
char path[PATH_MAX], subscriber[256], *sub;
jcl = ac->service_ctx = noit_jlog_closure_alloc();
if(!noit_hash_retr_str(ac->config,
"log_transit_feed_name",
strlen("log_transit_feed_name"),
&logname)) {
errstr = "No 'log_transit_feed_name' specified in log_transit.";
noitL(noit_error, "%s\n", errstr);
goto socket_error;
}
ls = noit_log_stream_find(logname);
if(!ls) {
snprintf(errbuff, sizeof(errbuff),
"Could not find log '%s' for log_transit.", logname);
errstr = errbuff;
noitL(noit_error, "%s\n", errstr);
goto socket_error;
}
type = noit_log_stream_get_type(ls);
if(!type || strcmp(type, "jlog")) {
snprintf(errbuff, sizeof(errbuff),
"Log '%s' for log_transit is not a jlog.", logname);
errstr = errbuff;
noitL(noit_error, "%s\n", errstr);
goto socket_error;
}
if(ac->cmd == NOIT_JLOG_DATA_FEED) {
if(!ac->remote_cn) {
errstr = "jlog transit started to unidentified party.";
noitL(noit_error, "%s\n", errstr);
goto socket_error;
}
strlcpy(subscriber, ac->remote_cn, sizeof(subscriber));
jcl->feed_stats = noit_jlog_feed_stats(subscriber);
}
else {
jcl->feed_stats = noit_jlog_feed_stats("~");
snprintf(subscriber, sizeof(subscriber),
"~%07d", noit_atomic_inc32(&tmpfeedcounter));
}
jcl->subscriber = strdup(subscriber);
strlcpy(path, noit_log_stream_get_path(ls), sizeof(path));
sub = strchr(path, '(');
if(sub) {
char *esub = strchr(sub, ')');
if(esub) {
*esub = '\0';
*sub++ = '\0';
}
}
jcl->jlog = jlog_new(path);
if(ac->cmd == NOIT_JLOG_DATA_TEMP_FEED) {
add_sub:
if(jlog_ctx_add_subscriber(jcl->jlog, jcl->subscriber, JLOG_END) == -1) {
snprintf(errbuff, sizeof(errbuff),
"jlog reader[%s] error: %s", jcl->subscriber,
jlog_ctx_err_string(jcl->jlog));
errstr = errbuff;
noitL(noit_error, "%s\n", errstr);
}
}
if(jlog_ctx_open_reader(jcl->jlog, jcl->subscriber) == -1) {
if(sub && !strcmp(sub, "*")) {
if(first_attempt) {
jlog_ctx_close(jcl->jlog);
jcl->jlog = jlog_new(path);
first_attempt = 0;
goto add_sub;
}
}
snprintf(errbuff, sizeof(errbuff),
"jlog reader[%s] error: %s", jcl->subscriber,
jlog_ctx_err_string(jcl->jlog));
errstr = errbuff;
noitL(noit_error, "%s\n", errstr);
goto socket_error;
}
}
/* The jlog stuff is disk I/O and can block us.
* We'll create a new thread to just handle this connection.
*/
eventer_remove_fd(e->fd);
newe = eventer_alloc();
memcpy(newe, e, sizeof(*e));
pthread_attr_init(&tattr);
pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
gettimeofday(&jcl->feed_stats->last_connection, NULL);
noit_atomic_inc32(&jcl->feed_stats->connections);
if(pthread_create(&tid, &tattr, noit_jlog_thread_main, newe) == 0) {
return 0;
}
/* Undo our dup */
eventer_free(newe);
/* Creating the thread failed, close it down and deschedule. */
e->opset->close(e->fd, &newmask, e);
return 0;
}
static int
process_jlog(const char *file, const char *sub)
{
jlog_ctx *log = jlog_new(file);
if (add_subscriber) {
if (jlog_ctx_add_subscriber(log, add_subscriber, JLOG_BEGIN)) {
fprintf(stderr, "Could not add subscriber '%s': %s\n", add_subscriber,
jlog_ctx_err_string(log));
} else {
OUT("Added subscriber '%s'\n", add_subscriber);
}
}
if (remove_subscriber) {
if (jlog_ctx_remove_subscriber(log, remove_subscriber) <= 0) {
fprintf(stderr, "Could not erase subscriber '%s': %s\n",
remove_subscriber, jlog_ctx_err_string(log));
} else {
OUT("Erased subscriber '%s'\n", remove_subscriber);
}
}
if (!sub) {
if (jlog_ctx_open_writer(log)) {
fprintf(stderr, "error opening '%s'\n", file);
return 0;
}
} else {
if (jlog_ctx_open_reader(log, sub)) {
fprintf(stderr, "error opening '%s'\n", file);
return 0;
}
}
if (show_progress) {
char buff[20], buff2[20], buff3[20];
jlog_id id, id2, id3;
jlog_get_checkpoint(log, sub, &id);
if (jlog_ctx_last_log_id(log, &id3)) {
fprintf(stderr, "jlog_error: %s\n", jlog_ctx_err_string(log));
fprintf(stderr, "error calling jlog_ctx_last_log_id\n");
}
jlog_snprint_logid(buff, sizeof(buff), &id);
jlog_snprint_logid(buff3, sizeof(buff3), &id3);
OUT("--------------------\n"
" Perspective of the '%s' subscriber\n"
" current checkpoint: %s\n"
" Last write: %s\n", sub, buff, buff3);
if (jlog_ctx_read_interval(log, &id, &id2) < 0) {
fprintf(stderr, "jlog_error: %s\n", jlog_ctx_err_string(log));
}
jlog_snprint_logid(buff, sizeof(buff), &id);
jlog_snprint_logid(buff2, sizeof(buff2), &id2);
OUT(" next interval: [%s, %s]\n"
"--------------------\n\n", buff, buff2);
}
if (show_subscribers) {
char **list;
int i;
jlog_ctx_list_subscribers(log, &list);
for (i = 0; list[i]; i++) {
char buff[20];
jlog_id id;
jlog_get_checkpoint(log, list[i], &id);
jlog_snprint_logid(buff, sizeof(buff), &id);
OUT("\t%32s @ %s\n", list[i], buff);
}
jlog_ctx_list_subscribers_dispose(log, list);
}
if (show_files) {
struct dirent *de;
DIR *dir;
dir = opendir(file);
if (!dir) {
fprintf(stderr, "error opening '%s'\n", file);
return 0;
}
while ((de = readdir(dir)) != NULL) {
uint32_t logid;
if (is_datafile(de->d_name, &logid)) {
char fullfile[MAXPATHLEN];
char fullidx[MAXPATHLEN];
struct stat sb;
int readers;
snprintf(fullfile, sizeof(fullfile), "%s/%s", file, de->d_name);
snprintf(fullidx, sizeof(fullidx), "%s/%s" INDEX_EXT, file, de->d_name);
if (stat(fullfile, &sb)) {
OUT("\t%8s [error stat(2)ing file: %s\n", de->d_name, strerror(errno));
} else {
readers = __jlog_pending_readers(log, logid);
OUT("\t%8s [%ju bytes] %d pending readers\n", de->d_name, sb.st_size, readers);
if (show_index_info) {
if (stat(fullidx, &sb)) {
OUT("\t\t idx: none\n");
} else {
uint32_t marker;
int closed;
if (jlog_idx_details(log, logid, &marker, &closed)) {
OUT("\t\t idx: error\n");
} else {
OUT("\t\t idx: %u messages (%08x), %s\n", marker, marker, closed ? "closed" : "open");
}
}
}
if (analyze_datafiles) {
analyze_datafile(log, logid);
}
if (readers == 0 && cleanup) {
unlink(fullfile);
unlink(fullidx);
}
}
}
}
closedir(dir);
}
jlog_ctx_close(log);
}
void *reader(void *unused) {
jlog_ctx *ctx;
char subname[32];
int tcount = 0, fcount = 0;
int prev_err = 0;
int subno = (int)(uintptr_t)unused;
snprintf(subname, sizeof(subname), "sub-%02d", subno);
reader_retry:
ctx = jlog_new(LOGNAME);
if(jlog_ctx_open_reader(ctx, subname) != 0) {
if(prev_err == 0) {
prev_err = jlog_ctx_err(ctx);
jlog_ctx_close(ctx);
ctx = jlog_new(LOGNAME);
if(prev_err == JLOG_ERR_INVALID_SUBSCRIBER) {
fprintf(stderr, "[%02d] invalid subscriber, init...\n", subno);
if(jlog_ctx_open_writer(ctx) != 0) {
fprintf(stderr, "[%02d] jlog_ctx_open_writer failed: %d %s\n", subno, jlog_ctx_err(ctx), jlog_ctx_err_string(ctx));
} else {
if(jlog_ctx_add_subscriber(ctx, subname, JLOG_BEGIN) != 0) {
fprintf(stderr, "[%02d] jlog_ctx_add_subscriber failed: %d %s\n", subno, jlog_ctx_err(ctx), jlog_ctx_err_string(ctx));
} else {
jlog_ctx_close(ctx);
goto reader_retry;
}
}
}
}
fprintf(stderr, "[%02d] jlog_ctx_open_reader failed: %d %s\n", subno, jlog_ctx_err(ctx), jlog_ctx_err_string(ctx));
croak();
}
fprintf(stderr, "[%02d] reader started\n", subno);
while(1) {
char begins[20], ends[20];
jlog_id begin, end;
int count;
jlog_message message;
if((count = jlog_ctx_read_interval(ctx, &begin, &end)) == -1) {
fprintf(stderr, "jlog_ctx_read_interval failed: %d %s\n", jlog_ctx_err(ctx), jlog_ctx_err_string(ctx));
croak();
}
jlog_snprint_logid(begins, sizeof(begins), &begin);
jlog_snprint_logid(ends, sizeof(ends), &end);
if(count > 0) {
int i;
//fprintf(stderr, "[%02d] reader (%s, %s] count: %d\n", subno, begins, ends, count);
for(i=0; i<count; i++, JLOG_ID_ADVANCE(&begin)) {
end = begin;
if(jlog_ctx_read_message(ctx, &begin, &message) != 0) {
if(jlog_ctx_err(ctx) == JLOG_ERR_CLOSE_LOGID) {
/* fine */
} else {
fcount++;
jlog_snprint_logid(begins, sizeof(begins), &begin);
fprintf(stderr, "[%02d] read failed @ %s: %d %s\n", subno, begins, jlog_ctx_err(ctx), jlog_ctx_err_string(ctx));
}
} else {
tcount++;
jlog_snprint_logid(begins, sizeof(begins), &begin);
/* fprintf(stderr, "[%02d] read: [%s]\n\t'%.*s'\n", subno, begins,
message.mess_len, (char *)message.mess); */
}
}
if(jlog_ctx_read_checkpoint(ctx, &end) != 0) {
fprintf(stderr, "[%02d] checkpoint failed: %d %s\n", subno, jlog_ctx_err(ctx), jlog_ctx_err_string(ctx));
} else {
fprintf(stderr, "[%02d] \tcheckpointed...\n", subno);
}
} else {
if(writer_done == 1) break;
}
}
fprintf(stderr, "[%02d] reader read %d, failed %d\n", subno, tcount, fcount);
jlog_ctx_close(ctx);
return (void *)(uintptr_t)tcount;
}