/* Creates and returns a jsonrpc_session to 'name', which should be a string
* acceptable to stream_open() or pstream_open().
*
* If 'name' is an active connection method, e.g. "tcp:127.1.2.3", the new
* jsonrpc_session connects to 'name'. If 'retry' is true, then the new
* session connects and reconnects to 'name', with backoff. If 'retry' is
* false, the new session will only try to connect once and after a connection
* failure or a disconnection jsonrpc_session_is_alive() will return false for
* the new session.
*
* If 'name' is a passive connection method, e.g. "ptcp:", the new
* jsonrpc_session listens for connections to 'name'. It maintains at most one
* connection at any given time. Any new connection causes the previous one
* (if any) to be dropped. */
struct jsonrpc_session *
jsonrpc_session_open(const char *name, bool retry)
{
struct jsonrpc_session *s;
s = xmalloc(sizeof *s);
s->reconnect = reconnect_create(time_msec());
reconnect_set_name(s->reconnect, name);
reconnect_enable(s->reconnect, time_msec());
s->rpc = NULL;
s->stream = NULL;
s->pstream = NULL;
s->seqno = 0;
s->dscp = 0;
s->last_error = 0;
if (!pstream_verify_name(name)) {
reconnect_set_passive(s->reconnect, true, time_msec());
} else if (!retry) {
reconnect_set_max_tries(s->reconnect, 1);
reconnect_set_backoff(s->reconnect, INT_MAX, INT_MAX);
}
if (!stream_or_pstream_needs_probes(name)) {
reconnect_set_probe_interval(s->reconnect, 0);
}
return s;
}
/* Creates and returns a jsonrpc_session to 'name', which should be a string
* acceptable to stream_open() or pstream_open().
*
* If 'name' is an active connection method, e.g. "tcp:127.1.2.3", the new
* jsonrpc_session connects and reconnects, with back-off, to 'name'.
*
* If 'name' is a passive connection method, e.g. "ptcp:", the new
* jsonrpc_session listens for connections to 'name'. It maintains at most one
* connection at any given time. Any new connection causes the previous one
* (if any) to be dropped. */
struct jsonrpc_session *
jsonrpc_session_open(const char *name)
{
struct jsonrpc_session *s;
s = xmalloc(sizeof *s);
s->reconnect = reconnect_create(time_msec());
reconnect_set_name(s->reconnect, name);
reconnect_enable(s->reconnect, time_msec());
s->rpc = NULL;
s->stream = NULL;
s->pstream = NULL;
s->seqno = 0;
s->dscp = 0;
if (!pstream_verify_name(name)) {
reconnect_set_passive(s->reconnect, true, time_msec());
}
if (!stream_or_pstream_needs_probes(name)) {
reconnect_set_probe_interval(s->reconnect, 0);
}
return s;
}
int
main(void)
{
extern struct vlog_module VLM_reconnect;
struct reconnect_stats prev;
unsigned int old_max_tries;
int old_time;
char line[128];
vlog_set_levels(&VLM_reconnect, VLF_ANY_FACILITY, VLL_OFF);
now = 1000;
reconnect = reconnect_create(now);
reconnect_set_name(reconnect, "remote");
reconnect_get_stats(reconnect, now, &prev);
printf("### t=%d ###\n", now);
old_time = now;
old_max_tries = reconnect_get_max_tries(reconnect);
while (fgets(line, sizeof line, stdin)) {
struct reconnect_stats cur;
struct svec args;
fputs(line, stdout);
if (line[0] == '#') {
continue;
}
svec_init(&args);
svec_parse_words(&args, line);
svec_terminate(&args);
if (!svec_is_empty(&args)) {
run_command(args.n, args.names, commands);
}
svec_destroy(&args);
if (old_time != now) {
printf("\n### t=%d ###\n", now);
}
reconnect_get_stats(reconnect, now, &cur);
diff_stats(&prev, &cur, now - old_time);
prev = cur;
if (reconnect_get_max_tries(reconnect) != old_max_tries) {
old_max_tries = reconnect_get_max_tries(reconnect);
printf(" %u tries left\n", old_max_tries);
}
old_time = now;
}
return 0;
}
/* Creates and returns a jsonrpc_session that is initially connected to
* 'jsonrpc'. If the connection is dropped, it will not be reconnected.
*
* On the assumption that such connections are likely to be short-lived
* (e.g. from ovs-vsctl), informational logging for them is suppressed. */
struct jsonrpc_session *
jsonrpc_session_open_unreliably(struct jsonrpc *jsonrpc)
{
struct jsonrpc_session *s;
s = xmalloc(sizeof *s);
s->reconnect = reconnect_create(time_msec());
reconnect_set_quiet(s->reconnect, true);
reconnect_set_name(s->reconnect, jsonrpc_get_name(jsonrpc));
reconnect_set_max_tries(s->reconnect, 0);
reconnect_connected(s->reconnect, time_msec());
s->rpc = jsonrpc;
s->stream = NULL;
s->pstream = NULL;
s->seqno = 0;
return s;
}
