/* ISC license. */

#ifndef S6RCD_SERVICE_H
#define S6RCD_SERVICE_H

#include <stdint.h>

#include <skalibs/cdb.h>

#define S6RC_ARGV_MAX 0x00ffffffu
#define S6RC_INSTANCES_MAX 0x00ffffffu
#define S6RC_INSTANCEPARAM_MAXLEN 0x00ffffffu

 /* Service types and db representation in memory */

#define S6RC_STYPE_LONGRUN 0
#define S6RC_STYPE_ONESHOT 1
#define S6RC_STYPE_EXTERNAL 2
#define S6RC_STYPE_BUNDLE 3
#define S6RC_STYPE_VIRTUAL 4
#define S6RC_STYPE_N 5

typedef uint32_t s6rc_id_t, *s6rc_id_t_ref ;

#define stype(sid) ((sid) >> 28)
#define snum(sid) ((sid) & 0x0fffffffu)

typedef struct s6rc_common_s s6rc_common_t, *s6rc_common_t_ref ;
struct s6rc_common_s
{
  uint32_t name ;
  uint32_t flags ;
  uint32_t deps[2] ;
  uint32_t ndeps[2] ;
} ;

typedef struct s6rc_atomic_s s6rc_atomic_t, *s6rc_atomic_t_ref ;
struct s6rc_atomic_s
{
  s6rc_common_t common ;
  uint32_t timeout[2] ;
} ;

typedef struct s6rc_oneshot_s s6rc_oneshot_t, *s6rc_oneshot_t_ref ;
struct s6rc_oneshot_s
{
  s6rc_atomic_t satomic ;
  uint32_t argv[2] ;
} ;

typedef struct s6rc_longrun_s s6rc_longrun_t, *s6rc_longrun_t_ref ;
struct s6rc_longrun_s
{
  s6rc_atomic_t satomic ;
  uint32_t nproducers ;
  uint32_t producers ;
  s6rc_id_t consumer ;
} ;

typedef struct s6rc_external_s s6rc_external_t, *s6rc_external_t_ref ;
struct s6rc_external_s
{
  s6rc_common_t common ;
} ;

typedef struct s6rc_bundle_s s6rc_bundle_t, *s6rc_bundle_t_ref ;
struct s6rc_bundle_s
{
  s6rc_common_t common ;
  uint32_t ncontents ;
  uint32_t contents ;
} ;

#define s6rc_deptype_passive(dep) ((dep) & 0x01u)
#define s6rc_deptype_soft(dep) ((dep) & 0x02u)
#define s6rc_deptype_loose(dep) ((dep) & 0x04u)

typedef struct s6rc_db_s s6rc_db_t, *s6rc_db_t_ref ;
struct s6rc_db_s
{
  char const *map ;
  size_t size ;
  uint32_t const *n ;
  s6rc_longrun_t const *longruns ;
  s6rc_oneshot_t const *oneshots ;
  s6rc_external_t const *externals ;
  s6rc_bundle_t const *bundles ;
  s6rc_bundle_t const *virtuals ;
  s6rc_id_t const *deps[2] ;
  uint8_t const *deptypes[2] ;
  s6rc_id_t const *producers ;
  char const *storage ;
  char const **argvs ;  /* alloced */
} ;
#define S6RC_DB_ZERO = { .map = 0, .len = 0 }


extern int s6rc_service_resolve (cdb_t *, char const *, s6rc_id_t *, char const **) ;
extern s6rc_common_t const *s6rc_service_common (s6rc_db_t const *, s6rc_id_t const *) ;

#endif