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/* upstart
*
* Copyright 2010,2011 Canonical Ltd.
* Author: Scott James Remnant <scott@netsplit.com>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef INIT_CONF_H
#define INIT_CONF_H
#include <nih/macros.h>
#include <nih/hash.h>
#include <nih/list.h>
#include <nih/watch.h>
#include "session.h"
#include "job_class.h"
/**
* ConfSourceType:
*
* We support various different types of configuration source, both solitary
* files and directory trees. Files within a directory tree may define any
* single top-level type, or may be as top-level configuration files and name
* what they define within themselves.
**/
typedef enum conf_source_type {
CONF_FILE, /* solitary file */
CONF_DIR, /* FIXME: */
CONF_JOB_DIR, /* directory tree of jobs */
} ConfSourceType;
/**
* ConfSource:
* @entry: list header,
* @session: attached session,
* @path: path to source,
* @type: type of source,
* @watch: NihWatch structure for automatic change notification,
* @flag: reload flag,
* @files: hash table of files.
*
* This structure represents a single source of configuration, which may be
* a single file or a directory of files of various types, depending on
* @type.
*
* Normally inotify is used to watch the source for changes and load them
* automatically, however mandatory reloading is also supported; for this
* the @flag member is toggled, and copied to all files reloaded;
* any that are in the old state are deleted.
**/
typedef struct conf_source {
NihList entry;
Session * session;
char *path;
ConfSourceType type;
NihWatch *watch;
int flag;
NihHash *files;
} ConfSource;
/**
* ConfFile:
* @entry: list header,
* @path: path to file,
* @source: configuration source,
* @flag: reload flag,
* @data: pointer to actual item.
*
* This structure represents a file within @source and links to the item
* parsed from it.
*
* The @flag member is used to support mandatory reloading; when the file is
* created and parsed, it is set to the same value as the source's. Then
* the source can trivially see which files have been lost, since they have
* the wrong flag value.
**/
typedef struct conf_file {
NihList entry;
char *path;
ConfSource *source;
int flag;
union {
void *data;
JobClass *job;
};
} ConfFile;
NIH_BEGIN_EXTERN
extern NihList *conf_sources;
void conf_init (void);
void conf_destroy (void);
ConfSource *conf_source_new (const void *parent, const char *path,
ConfSourceType type)
__attribute__ ((warn_unused_result));
ConfFile * conf_file_new (ConfSource *source, const char *path)
__attribute__ ((warn_unused_result));
void conf_reload (void);
int conf_source_reload (ConfSource *source)
__attribute__ ((warn_unused_result));
int conf_file_destroy (ConfFile *file);
JobClass * conf_select_job (const char *name, const Session *session);
const char *
conf_source_type_enum_to_str (ConfSourceType type)
__attribute__ ((warn_unused_result));
ConfSourceType
conf_source_type_str_to_enum (const char *type)
__attribute__ ((warn_unused_result));
json_object *
conf_source_serialise (const ConfSource *source)
__attribute__ ((warn_unused_result));
json_object *
conf_source_serialise_all (void)
__attribute__ ((warn_unused_result));
ConfSource *
conf_source_deserialise (void *parent, json_object *json)
__attribute__ ((warn_unused_result));
int
conf_source_deserialise_all (json_object *json)
__attribute__ ((warn_unused_result));
json_object *
conf_file_serialise (const ConfFile *file)
__attribute__ ((warn_unused_result));
ConfFile *
conf_file_deserialise (ConfSource *source, json_object *json)
__attribute__ ((warn_unused_result));
int
conf_file_deserialise_all (ConfSource *source, json_object *json)
__attribute__ ((warn_unused_result));
ssize_t
conf_source_get_index (const ConfSource *source)
__attribute__ ((warn_unused_result));
ConfFile *
conf_file_find (const char *name, const Session *session)
__attribute__ ((warn_unused_result));
#ifdef DEBUG
/* used for debugging only */
#include "job.h"
size_t
debug_count_hash_entries (const NihHash *hash);
size_t
debug_count_list_entries (const NihList *list)
__attribute__ ((unused));
void
debug_show_job_class (const JobClass *class)
__attribute__ ((unused));
void
debug_show_job_classes (void)
__attribute__ ((unused));
void
debug_show_job (const Job *job)
__attribute__ ((unused));
void
debug_show_jobs (const NihHash *instances)
__attribute__ ((unused));
void
debug_show_event (const Event *event)
__attribute__ ((unused));
void
debug_show_events (void)
__attribute__ ((unused));
void
debug_show_conf_file(const ConfFile *file)
__attribute__ ((unused));
void
debug_show_conf_source(const ConfSource *source)
__attribute__ ((unused));
void
debug_show_conf_sources(void)
__attribute__ ((unused));
void
debug_show_event_operator (EventOperator *oper)
__attribute__ ((unused));
void
debug_show_event_operators (EventOperator *root)
__attribute__ ((unused));
#endif
NIH_END_EXTERN
#endif /* INIT_CONF_H */
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