void *spr_worker(void *data) {
int rc=-1, nc;
void *sp=NULL, *set;
size_t len;
char *buf;
set = kv_set_new();
sp = kv_spoolreader_new(CF.dir);
if (!sp) goto done;
while (kv_spool_read(sp,set,1) > 0) {
if (set_to_buf(set,&buf,&len) < 0) goto done;
assert(len < MAX_BUF);
nc = nn_send(CF.ingress_socket_push, buf, len, 0);
free(buf);
if (nc < 0) {
fprintf(stderr,"nn_send: %s\n", nn_strerror(errno));
goto done;
}
ts_add(CF.spr_msgs_ts, CF.now, NULL);
if (CF.shutdown) break;
}
done:
CF.shutdown = 1;
kv_set_free(set);
if (sp) kv_spoolreader_free(sp);
return NULL;
}
/******************************************************************************
* kvsp-spr: a spool reader, for manually inspecting contents of a spool
*****************************************************************************/
int main(int argc, char *argv[]) {
char *exe = argv[0];
int opt;
while ( (opt = getopt(argc, argv, "fv+")) != -1) {
switch (opt) {
case 'v': verbose++; break;
case 'f': mode=mode_nop; break;
default: usage(exe); break;
}
}
if (optind < argc) dir=argv[optind++];
else usage(exe);
void *sp = kv_spoolreader_new(dir);
if (!sp) exit(-1);
void *set = kv_set_new();
while (kv_spool_read(sp,set,1) > 0) {
switch(mode) {
case mode_nop: continue;
case mode_out: kv_set_dump(set,stdout); printf("\n"); break;
default: assert(0); break;
}
}
done:
kv_spoolreader_free(sp);
kv_set_free(set);
return 0;
}
int main(int argc, char *argv[]) {
void *sp=NULL;
void *set=NULL;
int opt,rc=-1;
char *config_file;
set = kv_set_new();
utarray_new(output_keys, &ut_str_icd);
utarray_new(output_defaults, &ut_str_icd);
utarray_new(output_types,&ut_int_icd);
utstring_new(tmp);
while ( (opt = getopt(argc, argv, "v+d:b:s")) != -1) {
switch (opt) {
case 'v': verbose++; break;
case 's': push_mode++; break;
case 'd': spool=strdup(optarg); break;
case 'b': config_file=strdup(optarg); break;
default: usage(argv[0]); break;
}
}
if (optind < argc) pub_transport = argv[optind++];
if (!pub_transport) usage(argv[0]);
if (spool == NULL) usage(argv[0]);
if (parse_config(config_file) < 0) goto done;
if ( !(pub_context = zmq_init(1))) goto done;
if ( !(pub_socket = zmq_socket(pub_context, push_mode?ZMQ_PUSH:ZMQ_PUB))) goto done;
if (zmq_setsockopt(pub_socket, ZMQ_SNDHWM, &hwm, sizeof(hwm))) goto done;
if (zmq_bind(pub_socket, pub_transport) == -1) goto done;
sp = kv_spoolreader_new(spool);
if (!sp) goto done;
while (kv_spool_read(sp,set,1) > 0) { /* read til interrupted by signal */
zmq_msg_t part;
if (set_to_binary(set,&part) < 0) goto done;
rc = zmq_sendmsg(pub_socket, &part, 0);
zmq_msg_close(&part);
if (rc == -1) goto done;
}
rc = 0;
done:
if (rc) fprintf(stderr,"zmq: %s %s\n", pub_transport, zmq_strerror(errno));
if (pub_socket) zmq_close(pub_socket);
if (pub_context) zmq_term(pub_context);
if (sp) kv_spoolreader_free(sp);
kv_set_free(set);
utarray_free(output_keys);
utarray_free(output_defaults);
utarray_free(output_types);
utstring_free(tmp);
return 0;
}
int periodic_work() {
int rc = -1, kc;
shift_buffers();
dump_stats();
#if 1
while (have_capacity()) {
kc = kv_spool_read(cfg.sp,cfg.set,0);
if (kc < 0) goto done; // error
if (kc == 0) break; // no data
cfg.ompp++;
if (set_to_binary(cfg.set, cfg.s)) goto done;
append_to_client_buf(cfg.s);
}
mark_writable();
#endif
rc = 0;
done:
return rc;
}
/******************************************************************************
* the test itself
*****************************************************************************/
int main(int argc, char *argv[]) {
char *dir = mktmpdir();
void *sp = kv_spoolwriter_new(dir);
if (!sp) exit(-1);
void *set = kv_set_new();
kv_adds(set, "hello", "again");
kv_adds(set, "second", "life");
kv_spool_write(sp,set);
/* scan spool to validate expected file creation */
scan_spool(0);
/* replace a value in the set, spool the set out. it should append
* to the spool file previously created. */
printf("spooling second frame\n");
kv_adds(set, "second", "time");
kv_spool_write(sp,set);
kv_spoolwriter_free(sp);
/* verify spool has updated according to expectation */
scan_spool(0);
printf("clear set\n");
kv_set_clear(set);
/* loop over them */
kv_t *kv = NULL;
while ( (kv = kv_next(set, kv))) {
printf("key [%.*s], val [%.*s]\n", kv->klen, kv->key, kv->vlen, kv->val);
}
printf("reading from spool\n");
/* now try reading the spool */
sp = kv_spoolreader_new(dir);
int rc;
while ( (rc=kv_spool_read(sp, set, 0)) == 1) {
printf("reader read frame:\n");
kv = NULL;
while ( (kv = kv_next(set, kv))) {
printf(" key [%.*s], val [%.*s]\n", kv->klen, kv->key, kv->vlen, kv->val);
}
}
printf("kv_spool_read returned %d\n", rc);
kv_spoolreader_free(sp);
/* now reset it and read again */
printf("resetting the spool directory for another round of reading\n");
sp_reset(dir);
sp = kv_spoolreader_new(dir);
while ( (rc=kv_spool_read(sp, set, 0)) == 1) {
printf("reader read frame:\n");
kv = NULL;
while ( (kv = kv_next(set, kv))) {
printf(" key [%.*s], val [%.*s]\n", kv->klen, kv->key, kv->vlen, kv->val);
}
}
printf("kv_spool_read returned %d\n", rc);
kv_spoolreader_free(sp);
kv_set_free(set);
scan_spool(1);
return 0;
}
/* flush as much pending output to the client as it can handle. */
void feed_client(int ready_fd, int events) {
int *fd=NULL, rc, pos, rv, *p;
char *buf, tmp[100];
size_t len;
UT_string **s=NULL;
/* find the fd in our list */
while ( (fd=(int*)utarray_next(cfg.clients,fd))) {
s=(UT_string**)utarray_next(cfg.outbufs,s); assert(s);
pos = utarray_eltidx(cfg.clients, fd);
if (ready_fd == *fd) break;
}
assert(fd);
if (cfg.verbose > 1) {
fprintf(stderr, "pollout:%c pollin: %c\n", (events & EPOLLOUT)?'1':'0',
(events & EPOLLIN) ?'1':'0');
}
/* before we write to the client, drain any input or closure */
rv = recv(*fd, tmp, sizeof(tmp), MSG_DONTWAIT);
if (rv == 0) {
fprintf(stderr,"client closed (eof)\n");
close(*fd); /* deletes epoll instances on *fd too */
discard_client_buffers(pos);
return;
}
if ((events & EPOLLOUT) == 0) return;
/* send the pending buffer to the client */
p = (int*)utarray_eltptr(cfg.outidxs,pos);
buf = utstring_body(*s) + *p;
len = utstring_len(*s) - *p;
rc = send(*fd, buf, len, MSG_DONTWAIT);
if (cfg.verbose) fprintf(stderr,"sent %d/%d bytes\n", rc, (int)len);
/* test for client closure or error. */
if (rc < 0) {
if ((errno == EWOULDBLOCK) || (errno == EAGAIN)) return;
fprintf(stderr,"client closed (%s)\n", strerror(errno));
close(*fd); /* deletes all epoll instances on *fd too */
discard_client_buffers(pos);
return;
}
/* advance output index in the output buffer; we wrote rc bytes */
if (rc < len) {
*p += rc;
cfg.obpp += rc;
} else {
*p = 0;
utstring_clear(*s); // buffer emptied
mod_epoll(EPOLLIN,*fd); // remove EPOLLOUT
}
#if 1
shift_buffers();
int kc;
while (have_capacity()) {
kc = kv_spool_read(cfg.sp,cfg.set,0);
if (kc < 0) goto done; // error
if (kc == 0) break; // no data
cfg.ompp++;
if (set_to_binary(cfg.set, cfg.s)) goto done;
append_to_client_buf(cfg.s);
}
mark_writable();
done:
return;
#endif
}