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/*
* Copyright (c) 2002-2011 Balabit
* Copyright (c) 1998-2011 Balázs Scheidler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#ifndef LOGSOURCE_H_INCLUDED
#define LOGSOURCE_H_INCLUDED
#include "logpipe.h"
#include "stats/stats-registry.h"
#include "stats/stats-compat.h"
#include "stats/stats-cluster-key-builder.h"
#include "window-size-counter.h"
#include "dynamic-window.h"
typedef struct _LogSourceOptions
{
gssize init_window_size;
const gchar *group_name;
gboolean keep_timestamp;
gboolean keep_hostname;
gboolean chain_hostnames;
HostResolveOptions host_resolve_options;
gchar *program_override;
gint program_override_len;
gchar *host_override;
gint host_override_len;
LogTagId source_group_tag;
gboolean read_old_records;
gboolean use_syslogng_pid;
GArray *tags;
GList *source_queue_callbacks;
gint stats_level;
gint stats_source;
} LogSourceOptions;
typedef struct _LogSource LogSource;
/**
* LogSource:
*
* This structure encapsulates an object which generates messages without
* defining how those messages are accepted by peers. The most prominent
* derived class is LogReader which is an extended RFC3164 capable syslog
* message processor used everywhere.
**/
struct _LogSource
{
LogPipe super;
LogSourceOptions *options;
gboolean threaded;
gchar *name;
gchar *stats_id;
WindowSizeCounter window_size;
DynamicWindow dynamic_window;
gboolean window_initialized;
gsize initial_window_size;
/* full_window_size = static + dynamic */
gsize full_window_size;
atomic_gssize window_size_to_be_reclaimed;
atomic_gssize pending_reclaimed;
struct
{
StatsClusterKeyBuilder *stats_kb;
StatsCounterItem *stat_window_size;
StatsCounterItem *stat_full_window;
StatsCounterItem *last_message_seen;
StatsClusterKey *recvd_messages_key;
StatsCounterItem *recvd_messages;
gboolean raw_bytes_enabled;
StatsClusterKey *recvd_bytes_key;
StatsByteCounter recvd_bytes;
StatsCluster *stat_window_size_cluster;
StatsCluster *stat_full_window_cluster;
} metrics;
guint32 last_ack_count;
guint32 ack_count;
glong window_full_sleep_nsec;
struct timespec last_ack_rate_time;
AckTrackerFactory *ack_tracker_factory;
AckTracker *ack_tracker;
void (*wakeup)(LogSource *s);
void (*schedule_dynamic_window_realloc)(LogSource *s);
};
static inline gboolean
log_source_free_to_send(LogSource *self)
{
return !window_size_counter_suspended(&self->window_size);
}
static inline gsize
log_source_get_init_window_size(LogSource *self)
{
return self->initial_window_size;
}
static inline void
log_source_schedule_dynamic_window_realloc(LogSource *s)
{
if (!s || !s->schedule_dynamic_window_realloc)
return;
s->schedule_dynamic_window_realloc(s);
}
gboolean log_source_init(LogPipe *s);
gboolean log_source_deinit(LogPipe *s);
void log_source_post(LogSource *self, LogMessage *msg);
void log_source_set_options(LogSource *self, LogSourceOptions *options, const gchar *stats_id,
StatsClusterKeyBuilder *kb, gboolean threaded, LogExprNode *expr_node);
void log_source_set_ack_tracker_factory(LogSource *self, AckTrackerFactory *factory);
void log_source_set_name(LogSource *self, const gchar *name);
void log_source_mangle_hostname(LogSource *self, LogMessage *msg);
void log_source_init_instance(LogSource *self, GlobalConfig *cfg);
void log_source_options_defaults(LogSourceOptions *options);
void log_source_options_init(LogSourceOptions *options, GlobalConfig *cfg, const gchar *group_name);
void log_source_options_destroy(LogSourceOptions *options);
void log_source_options_set_tags(LogSourceOptions *options, GList *tags);
void log_source_free(LogPipe *s);
void log_source_wakeup(LogSource *self);
void log_source_flow_control_adjust(LogSource *self, guint32 window_size_increment);
void log_source_flow_control_adjust_when_suspended(LogSource *self, guint32 window_size_increment);
void log_source_flow_control_suspend(LogSource *self);
void log_source_disable_bookmark_saving(LogSource *self);
void log_source_enable_dynamic_window(LogSource *self, DynamicWindowPool *window_ctr);
void log_source_dynamic_window_update_statistics(LogSource *self);
gboolean log_source_is_dynamic_window_enabled(LogSource *self);
void log_source_global_init(void);
/* protected */
void log_source_dynamic_window_realloc(LogSource *self);
#endif
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