/usr/include/ncbi-vdb/vfs/resolver.h is in libncbi-vdb-dev 2.8.1+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Public Domain Notice
* National Center for Biotechnology Information
*
* This software/database is a "United States Government Work" under the
* terms of the United States Copyright Act. It was written as part of
* the author's official duties as a United States Government employee and
* thus cannot be copyrighted. This software/database is freely available
* to the public for use. The National Library of Medicine and the U.S.
* Government have not placed any restriction on its use or reproduction.
*
* Although all reasonable efforts have been taken to ensure the accuracy
* and reliability of the software and data, the NLM and the U.S.
* Government do not and cannot warrant the performance or results that
* may be obtained by using this software or data. The NLM and the U.S.
* Government disclaim all warranties, express or implied, including
* warranties of performance, merchantability or fitness for any particular
* purpose.
*
* Please cite the author in any work or product based on this material.
*
* ===========================================================================
*
*/
#ifndef _h_vfs_resolver_
#define _h_vfs_resolver_
#ifndef _h_vfs_extern_
#include <vfs/extern.h>
#endif
#ifndef _h_klib_defs_
#include <klib/defs.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*--------------------------------------------------------------------------
* forwards
*/
struct KFile;
struct VPath;
struct String;
struct KConfig;
struct KRepository;
struct VFSManager;
/*--------------------------------------------------------------------------
* VResolver
*/
typedef struct VResolver VResolver;
/* Make
* ask the VFS manager to make a resolver
*/
VFS_EXTERN rc_t CC VFSManagerMakeResolver ( struct VFSManager const * self,
VResolver ** new_resolver, struct KConfig const * cfg );
VFS_EXTERN rc_t CC KRepositoryMakeResolver ( struct KRepository const * self,
VResolver ** new_resolver, struct KConfig const * cfg );
/* AddRef
* Release
*/
VFS_EXTERN rc_t CC VResolverAddRef ( const VResolver * self );
VFS_EXTERN rc_t CC VResolverRelease ( const VResolver * self );
/* VRemoteProtocols
* accepted protocol list
* there is a simple set of protocols
* where multiple protocols are involved,
* they are ordered by preference from LSB toward MSB
*/
typedef uint32_t VRemoteProtocols;
enum
{
/* version 1.1 protocols */
eProtocolNone = 0
, eProtocolHttp = 1
, eProtocolFasp = 2
/* version 1.2 protocols */
, eProtocolHttps = 3
/* values 3..7 are available for future */
, eProtocolLast
, eProtocolMax = eProtocolLast - 1
, eProtocolMask = 7
, eProtocolMaxPref = 3
/* macros for building multi-protocol constants
ordered by preference from least to most significant bits */
#define VRemoteProtocolsMake2( p1, p2 ) \
( ( ( VRemoteProtocols ) ( p1 ) & eProtocolMask ) | \
( ( ( VRemoteProtocols ) ( p2 ) & eProtocolMask ) << ( 3 * 1 ) ) )
#define VRemoteProtocolsMake3( p1, p2, p3 ) \
( VRemoteProtocolsMake2 ( p1, p2 ) | \
( ( ( VRemoteProtocols ) ( p3 ) & eProtocolMask ) << ( 3 * 2 ) ) )
, eProtocolFaspHttp = VRemoteProtocolsMake2 ( eProtocolFasp, eProtocolHttp )
, eProtocolHttpFasp = VRemoteProtocolsMake2 ( eProtocolHttp, eProtocolFasp )
, eProtocolHttpsHttp = VRemoteProtocolsMake2 ( eProtocolHttps, eProtocolHttp )
, eProtocolHttpHttps = VRemoteProtocolsMake2 ( eProtocolHttp, eProtocolHttps )
, eProtocolFaspHttps = VRemoteProtocolsMake2 ( eProtocolFasp, eProtocolHttps )
, eProtocolHttpsFasp = VRemoteProtocolsMake2 ( eProtocolHttps, eProtocolFasp )
, eProtocolFaspHttpHttps = VRemoteProtocolsMake3 ( eProtocolFasp, eProtocolHttp, eProtocolHttps )
, eProtocolHttpFaspHttps = VRemoteProtocolsMake3 ( eProtocolHttp, eProtocolFasp, eProtocolHttps )
, eProtocolFaspHttpsHttp = VRemoteProtocolsMake3 ( eProtocolFasp, eProtocolHttps, eProtocolHttp )
, eProtocolHttpHttpsFasp = VRemoteProtocolsMake3 ( eProtocolHttp, eProtocolHttps, eProtocolFasp )
, eProtocolHttpsFaspHttp = VRemoteProtocolsMake3 ( eProtocolHttps, eProtocolFasp, eProtocolHttp )
, eProtocolHttpsHttpFasp = VRemoteProtocolsMake3 ( eProtocolHttps, eProtocolHttp, eProtocolFasp )
};
/* Parse
* parses a comma-separated list of case-insensitive protocols:
* 'http', 'https', 'fasp'
*
* trims white-space, ignores unrecognized and empty terms
*
* returns an ordered list of valid protocols
*/
VFS_EXTERN VRemoteProtocols CC VRemoteProtocolsParse ( struct String const * protos );
/* Query
* resolve object location to either an existing local path,
* or a pair of remote URL + local cache location.
*
* "protocols" [ IN ] - the desired protocols for remote resolution
*
* "query" [ IN ] - a path that can represent:
* accession : a recognizable accession from NCBI or known organization
* obj-id : a dbGaP object id
* name : a dbGaP filename
* path : a filesystem path
* url : a remote location
*
* "local" [ OUT, NULL OKAY ] - optional return parameter for local path:
* accession : resolve to local user or site path
* obj-id : resolve to local user protected path
* name : resolve to local user protected path
* url : set to NULL
*
* "remote" [ OUT, NULL OKAY ] - optional return parameter for remote path:
* accession : resolve to URL
* obj-id : resolve to URL
* name : resolve to URL
* url : set to duplicate
*
* "cache" [ OUT, NULL OKAY ] - optional return parameter for cache path:
* accession : resolve to user cache path
* obj-id : resolve to user cache path
* path : set to NULL
* url : resolve to user cache path
*
* any of the output parameters may be NULL, but not all, i.e. there
* must be at least one non-NULL return parameter.
*
* if you DON'T want local resolution, pass NULL for "local" and
* the query will be resolved remotely. if you don't want remote
* resolution, pass NULL for "remote".
*
* a query that is resolved locally will always return NULL for
* "remote" and "cache", if the parameters are provided.
*/
VFS_EXTERN rc_t CC VResolverQuery ( const VResolver * self,
VRemoteProtocols protocols, struct VPath const * query,
struct VPath const ** local, struct VPath const ** remote,
struct VPath const ** cache );
/* Local - DEPRECATED
* Find an existing local file/directory that is named by the accession.
* rcState of rcNotFound means it does not exist.
*
* other rc code for failure are possible.
*
* Accession must be an ncbi-acc scheme or a simple name with no
* directory paths.
*/
VFS_EXTERN rc_t CC VResolverLocal ( const VResolver * self,
struct VPath const * accession, struct VPath const ** path );
/* Remote - DEPRECATED
* Find an existing remote file that is named by the accession.
*
* rcState of rcNotFound means it did not exist and can not be
* downloaded. Probably a bad accession name.
*
* Need a specific rc for no network configured.
* Need a specific rc for network access permitted.
*
* Other rc code for failure are possible.
*
* Accession must be an ncbi-acc scheme or a simple name with no
* directory paths.
*
*/
VFS_EXTERN rc_t CC VResolverRemote ( const VResolver * self,
VRemoteProtocols protocols, struct VPath const * accession,
struct VPath const ** path /* , struct KFile const ** opt_file_rtn */ );
/* Cache - DEPRECATED
* Find a cache directory that might or might not contain a partially
* downloaded file.
*
* Accession must be an ncbi-acc scheme, an http url or a simple name with no
* directory paths. All three should return the same directory URL as a VPath. (?)
* Or should it be a directory or a file url depending upon finding a partial
* download? This would require co-ordination with all download mechanisms that
* we permit.
*
* With refseq holding wgs objects we have a case were the downloaded file is not
* named the same as the original accession as the file archive you want is a
* container for other files.
*
* Find local will give a path that has a special scheme in these cases.
* Find remote will give the url for the container that contains the accession
* so using the returned VPath from resolve remote is better than the original
* accession in this one case. I think...
*/
VFS_EXTERN rc_t CC VResolverCache ( const VResolver * self,
struct VPath const * url, struct VPath const ** path, uint64_t file_size );
/* EnableState
* modifies how the various properties are interpreted
*/
typedef uint32_t VResolverEnableState;
enum
{
vrUseConfig = 0, /* take enable/disable state from KConfig */
vrAlwaysEnable = 1, /* always enable, regardless of KConfig */
vrAlwaysDisable = 2 /* always disable, regardless of KConfig */
};
/* LocalEnable
* modify settings for using local repositories,
* meaning site, user-public and user-protected.
*
* "enable" [ IN ] - enable or disable local access,
* or follow settings in KConfig
*
* returns the previous state of "remote-enabled" property
*
* NB - in VDB-2, the state is associated with library code
* shared libraries in separate closures will have separate
* state. this can only occur if dynamic ( manual ) loading of
* shared libraries is used, and will not occur with normal
* usage. in VDB-3 the state will be stored with the process,
* not the library.
*/
VFS_EXTERN VResolverEnableState CC VResolverLocalEnable ( const VResolver * self,
VResolverEnableState enable );
/* RemoteEnable
* modify settings for using remote repositories
*
* "enable" [ IN ] - enable or disable remote access,
* or follow settings in KConfig
*
* returns the previous state of "remote-enabled" property
*
* NB - in VDB-2, the state is associated with library code
* shared libraries in separate closures will have separate
* state. this can only occur if dynamic ( manual ) loading of
* shared libraries is used, and will not occur with normal
* usage. in VDB-3 the state will be stored with the process,
* not the library.
*/
VFS_EXTERN VResolverEnableState CC VResolverRemoteEnable ( const VResolver * self,
VResolverEnableState enable );
/* CacheEnable
* modify settings for caching files in user repositories
*
* "enable" [ IN ] - enable or disable user repository cache,
* or follow settings in KConfig
*
* returns the previous state of "cache-enabled" property
*
* NB - in VDB-2, the state is associated with library code
* shared libraries in separate closures will have separate
* state. this can only occur if dynamic ( manual ) loading of
* shared libraries is used, and will not occur with normal
* usage. in VDB-3 the state will be stored with the process,
* not the library.
*/
VFS_EXTERN VResolverEnableState CC VResolverCacheEnable ( const VResolver * self,
VResolverEnableState enable );
#ifdef __cplusplus
}
#endif
#endif /* _h_vfs_resolver_ */
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