void
log_reader_reopen(LogPipe *s, LogProto *proto, LogPipe *control, LogReaderOptions *options, gint stats_level, gint stats_source, const gchar *stats_id, const gchar *stats_instance, gboolean immediate_check)
{
LogReader *self = (LogReader *) s;
gpointer args[] = { s, proto };
log_source_deinit(s);
main_loop_call((MainLoopTaskFunc) log_reader_reopen_deferred, args, TRUE);
if (!main_loop_is_main_thread())
{
g_static_mutex_lock(&self->pending_proto_lock);
while (self->pending_proto_present)
{
g_cond_wait(self->pending_proto_cond, g_static_mutex_get_mutex(&self->pending_proto_lock));
}
g_static_mutex_unlock(&self->pending_proto_lock);
}
if (immediate_check)
{
log_reader_set_immediate_check(&self->super.super);
}
log_reader_set_options(s, control, options, stats_level, stats_source, stats_id, stats_instance);
log_reader_set_follow_filename(s, stats_instance);
log_source_init(s);
}
/* NOTE: runs in the main thread */
static void
affile_sd_notify(LogPipe *s, LogPipe *sender, gint notify_code, gpointer user_data)
{
AFFileSourceDriver *self = (AFFileSourceDriver *) s;
GlobalConfig *cfg = log_pipe_get_config(s);
gint fd;
switch (notify_code)
{
case NC_FILE_MOVED:
{
msg_verbose("Follow-mode file source moved, tracking of the new file is started",
evt_tag_str("filename", self->filename->str),
NULL);
log_pipe_deinit(self->reader);
log_pipe_unref(self->reader);
if (affile_sd_open_file(self, self->filename->str, &fd))
{
LogTransport *transport;
LogProto *proto;
transport = log_transport_plain_new(fd, 0);
transport->timeout = 10;
proto = affile_sd_construct_proto(self, transport);
self->reader = log_reader_new(proto);
log_reader_set_options(self->reader, s, &self->reader_options, 1, SCS_FILE, self->super.super.id, self->filename->str);
log_reader_set_follow_filename(self->reader, self->filename->str);
log_reader_set_immediate_check(self->reader);
log_pipe_append(self->reader, s);
if (!log_pipe_init(self->reader, cfg))
{
msg_error("Error initializing log_reader, closing fd",
evt_tag_int("fd", fd),
NULL);
log_pipe_unref(self->reader);
self->reader = NULL;
close(fd);
}
affile_sd_recover_state(s, cfg, proto);
}
else
{
self->reader = NULL;
}
break;
}
default:
break;
}
}
static gboolean
affile_sd_init(LogPipe *s)
{
AFFileSourceDriver *self = (AFFileSourceDriver *) s;
GlobalConfig *cfg = log_pipe_get_config(s);
gint fd;
gboolean file_opened, open_deferred = FALSE;
log_reader_options_init(&self->reader_options, cfg, self->super.group);
file_opened = affile_sd_open_file(self, self->filename->str, &fd);
if (!file_opened && self->reader_options.follow_freq > 0)
{
msg_info("Follow-mode file source not found, deferring open",
evt_tag_str("filename", self->filename->str),
NULL);
open_deferred = TRUE;
fd = -1;
}
if (file_opened || open_deferred)
{
LogTransport *transport;
transport = log_transport_plain_new(fd, self->filename, NULL, 0);
transport->timeout = 10;
/* FIXME: we shouldn't use reader_options to store log protocol parameters */
self->reader = log_reader_new(
log_proto_plain_new_server(transport, self->reader_options.padding,
self->reader_options.msg_size,
((self->reader_options.follow_freq > 0)
? LPPF_IGNORE_EOF
: LPPF_NOMREAD)
),
LR_LOCAL);
log_reader_set_options(self->reader, s, &self->reader_options, 1, SCS_FILE, self->super.id, self->filename->str);
log_reader_set_follow_filename(self->reader, self->filename->str);
/* NOTE: if the file could not be opened, we ignore the last
* remembered file position, if the file is created in the future
* we're going to read from the start. */
affile_sd_load_pos(s, cfg);
log_pipe_append(self->reader, s);
if (!log_pipe_init(self->reader, NULL))
{
msg_error("Error initializing log_reader, closing fd",
evt_tag_int("fd", fd),
NULL);
log_pipe_unref(self->reader);
self->reader = NULL;
close(fd);
return FALSE;
}
}
else
{
msg_error("Error opening file for reading",
evt_tag_str("filename", self->filename->str),
evt_tag_errno(EVT_TAG_OSERROR, errno),
NULL);
return self->super.optional;
}
return TRUE;
}
