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Add Doxygen for HDFS VFD
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derobins committed Mar 10, 2024
1 parent ef401a5 commit 027fa81
Showing 1 changed file with 59 additions and 62 deletions.
121 changes: 59 additions & 62 deletions src/H5FDhdfs.h
Original file line number Diff line number Diff line change
Expand Up @@ -41,71 +41,49 @@
extern "C" {
#endif

/****************************************************************************
*
* Structure: H5FD_hdfs_fapl_t
*
* Purpose:
*
* H5FD_hdfs_fapl_t is a public structure that is used to pass
* configuration information to the appropriate HDFS VFD via the FAPL.
* A pointer to an instance of this structure is a parameter to
* H5Pset_fapl_hdfs() and H5Pget_fapl_hdfs().
*
*
*
* `version` (int32_t)
*
* Version number of the `H5FD_hdfs_fapl_t` structure. Any instance passed
* to the above calls must have a recognized version number, or an error
* will be flagged.
*
* This field should be set to `H5FD__CURR_HDFS_FAPL_T_VERSION`.
*
* `namenode_name` (const char[])
*
* Name of "Name Node" to access as the HDFS server.
*
* Must not be longer than `H5FD__HDFS_NODE_NAME_SPACE`.
*
* TBD: Can be NULL.
*
* `namenode_port` (int32_t) TBD
*
* Port number to use to connect with Name Node.
*
* TBD: If 0, uses a default port.
*
* `kerberos_ticket_cache` (const char[])
*
* Path to the location of the Kerberos authentication cache.
*
* Must not be longer than `H5FD__HDFS_KERB_CACHE_PATH_SPACE`.
*
* TBD: Can be NULL.
*
* `user_name` (const char[])
/**
* The version number of the H5FD_hdfs_fapl_t configuration
* structure for the $H5FD_HDFS driver
*/
#define H5FD__CURR_HDFS_FAPL_T_VERSION 1

/** Max size of the node name */
#define H5FD__HDFS_NODE_NAME_SPACE 128
/** Max size of the user name */
#define H5FD__HDFS_USER_NAME_SPACE 128
/** Max size of the kerberos cache path */
#define H5FD__HDFS_KERB_CACHE_PATH_SPACE 128

/**
*\struct H5FD_hdfs_fapl_t
* \brief Configuration structure for H5Pset_fapl_hdfs() / H5Pget_fapl_hdfs()
*
* Username to use when accessing file.
* \details H5FD_hdfs_fapl_t is a public structure that is used to pass
* configuration data to the #H5FD_HDFS driver via a File Access
* Property List. A pointer to an instance of this structure is
* a parameter to H5Pset_fapl_hdfs() and H5Pget_fapl_hdfs().
*
* Must not be longer than `H5FD__HDFS_USER_NAME_SPACE`.
* \var int32_t H5FD_hdfs_fapl_t::version
* Version number of the H5FD_hdfs_fapl_t structure. Any instance passed
* to H5Pset_fapl_hdfs() / H5Pget_fapl_hdfs() must have a recognized version
* number or an error will be raised. Currently, this field should be set
* to #H5FD_CURR_HDFS_FAPL_T_VERSION.
*
* TBD: Can be NULL.
* \var char H5FD_hdfs_fapl_t::namenode_name[H5FD__HDFS_NODE_NAME_SPACE + 1]
* Name of "Name Node" to access as the HDFS server
*
* `stream_buffer_size` (int32_t)
* \var int32_t H5FD_hdfs_fapl_t::namenode_port
* Port number to use to connect with Name Node
*
* Size (in bytes) of the file read stream buffer.
* \var char H5FD_hdfs_fapl_t::user_name[H5FD__HDFS_USER_NAME_SPACE + 1]
* Username to use when accessing file
*
* TBD: If -1, relies on a default value.
* \var char H5FD_hdfs_fapl_t::kerberos_ticket_cache[H5FD__HDFS_KERB_CACHE_PATH_SPACE + 1]
* Path to the location of the Kerberos authentication cache
*
****************************************************************************/

#define H5FD__CURR_HDFS_FAPL_T_VERSION 1

#define H5FD__HDFS_NODE_NAME_SPACE 128
#define H5FD__HDFS_USER_NAME_SPACE 128
#define H5FD__HDFS_KERB_CACHE_PATH_SPACE 128

* \var int32_t H5FD_hdfs_fapl_t::stream_buffer_size
* Size (in bytes) of the file read stream buffer
*/
typedef struct H5FD_hdfs_fapl_t {
int32_t version;
char namenode_name[H5FD__HDFS_NODE_NAME_SPACE + 1];
Expand All @@ -124,16 +102,35 @@ H5_DLL hid_t H5FD_hdfs_init(void);
/**
* \ingroup FAPL
*
* \todo Add missing documentation
* \brief Modifies the file access property list to use the #H5FD_HDFS driver
*
* \fapl_id
* \param[in] fa Pointer to #H5FD_HDFS driver configuration structure
*
* \returns \herr_t
*
* \details H5Pset_fapl_hdfs() modifies the file access property list to use the
* #H5FD_HDFS driver.
*
* \since 1.10.6
*/
H5_DLL herr_t H5Pget_fapl_hdfs(hid_t fapl_id, H5FD_hdfs_fapl_t *fa_out);
H5_DLL herr_t H5Pset_fapl_hdfs(hid_t fapl_id, H5FD_hdfs_fapl_t *fa);

/**
* \ingroup FAPL
*
* \todo Add missing documentation
* \brief Queries a File Access Property List for #H5FD_HDFS file driver properties
*
* \fapl_id
* \param[out] fa_out Pointer to #H5FD_HDFS driver configuration structure
* \returns \herr_t
*
* \details H5Pget_fapl_hdfs() queries the #H5FD_HDFS driver properties as set
* by H5Pset_fapl_hdfs().
*
* \since 1.10.6
*/
H5_DLL herr_t H5Pset_fapl_hdfs(hid_t fapl_id, H5FD_hdfs_fapl_t *fa);
H5_DLL herr_t H5Pget_fapl_hdfs(hid_t fapl_id, H5FD_hdfs_fapl_t *fa_out);

#ifdef __cplusplus
}
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