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fs_metadata.go
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/
fs_metadata.go
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package fs
import (
irods_fs "github.com/cyverse/go-irodsclient/irods/fs"
"github.com/cyverse/go-irodsclient/irods/types"
"github.com/cyverse/go-irodsclient/irods/util"
)
// SearchByMeta searches all file system entries with given metadata
func (fs *FileSystem) SearchByMeta(metaname string, metavalue string) ([]*Entry, error) {
return fs.searchEntriesByMeta(metaname, metavalue)
}
// ListMetadata lists metadata for the given path
func (fs *FileSystem) ListMetadata(path string) ([]*types.IRODSMeta, error) {
// check cache first
cachedEntry := fs.cache.GetMetadataCache(path)
if cachedEntry != nil {
return cachedEntry, nil
}
irodsCorrectPath := util.GetCorrectIRODSPath(path)
// otherwise, retrieve it and add it to cache
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return nil, err
}
defer fs.metaSession.ReturnConnection(conn)
var metadataobjects []*types.IRODSMeta
if fs.ExistsDir(irodsCorrectPath) {
metadataobjects, err = irods_fs.ListCollectionMeta(conn, irodsCorrectPath)
if err != nil {
return nil, err
}
} else {
collectionEntry, err := fs.getCollection(util.GetIRODSPathDirname(path))
if err != nil {
return nil, err
}
collection := fs.getCollectionFromEntry(collectionEntry)
metadataobjects, err = irods_fs.ListDataObjectMeta(conn, collection, util.GetIRODSPathFileName(irodsCorrectPath))
if err != nil {
return nil, err
}
}
// cache it
fs.cache.AddMetadataCache(irodsCorrectPath, metadataobjects)
return metadataobjects, nil
}
// AddMetadata adds a metadata for the path
func (fs *FileSystem) AddMetadata(irodsPath string, attName string, attValue string, attUnits string) error {
irodsCorrectPath := util.GetCorrectIRODSPath(irodsPath)
metadata := &types.IRODSMeta{
Name: attName,
Value: attValue,
Units: attUnits,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
if fs.ExistsDir(irodsCorrectPath) {
err = irods_fs.AddCollectionMeta(conn, irodsCorrectPath, metadata)
if err != nil {
return err
}
} else {
err = irods_fs.AddDataObjectMeta(conn, irodsCorrectPath, metadata)
if err != nil {
return err
}
}
fs.cache.RemoveMetadataCache(irodsCorrectPath)
return nil
}
// DeleteMetadata deletes a metadata for the path
func (fs *FileSystem) DeleteMetadata(irodsPath string, avuid int64) error {
irodsCorrectPath := util.GetCorrectIRODSPath(irodsPath)
metadata := &types.IRODSMeta{
AVUID: avuid,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
if fs.ExistsDir(irodsCorrectPath) {
err = irods_fs.DeleteCollectionMeta(conn, irodsCorrectPath, metadata)
if err != nil {
return err
}
} else {
err = irods_fs.DeleteDataObjectMeta(conn, irodsCorrectPath, metadata)
if err != nil {
return err
}
}
fs.cache.RemoveMetadataCache(irodsCorrectPath)
return nil
}
// DeleteMetadataByName deletes a metadata for the path by name
func (fs *FileSystem) DeleteMetadataByName(irodsPath string, attName string) error {
irodsCorrectPath := util.GetCorrectIRODSPath(irodsPath)
metadata := &types.IRODSMeta{
AVUID: 0,
Name: attName,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
if fs.ExistsDir(irodsCorrectPath) {
err = irods_fs.DeleteCollectionMeta(conn, irodsCorrectPath, metadata)
if err != nil {
return err
}
} else {
err = irods_fs.DeleteDataObjectMeta(conn, irodsCorrectPath, metadata)
if err != nil {
return err
}
}
fs.cache.RemoveMetadataCache(irodsCorrectPath)
return nil
}
// AddUserMetadata adds a user metadata
func (fs *FileSystem) AddUserMetadata(user string, attName, attValue, attUnits string) error {
metadata := &types.IRODSMeta{
Name: attName,
Value: attValue,
Units: attUnits,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
err = irods_fs.AddUserMeta(conn, user, metadata)
if err != nil {
return err
}
return nil
}
// DeleteUserMetadata deletes a user metadata
func (fs *FileSystem) DeleteUserMetadata(user string, avuid int64) error {
metadata := &types.IRODSMeta{
AVUID: avuid,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
err = irods_fs.DeleteUserMeta(conn, user, metadata)
if err != nil {
return err
}
return nil
}
// DeleteUserMetadataByName deletes a user metadata by name
func (fs *FileSystem) DeleteUserMetadataByName(user string, attName string) error {
metadata := &types.IRODSMeta{
AVUID: 0,
Name: attName,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
err = irods_fs.DeleteUserMeta(conn, user, metadata)
if err != nil {
return err
}
return nil
}
// ListUserMetadata lists all user metadata
func (fs *FileSystem) ListUserMetadata(user string) ([]*types.IRODSMeta, error) {
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return nil, err
}
defer fs.metaSession.ReturnConnection(conn)
metadataobjects, err := irods_fs.ListUserMeta(conn, user)
if err != nil {
return nil, err
}
return metadataobjects, nil
}
// AddResourceMetadata adds a resource metadata
func (fs *FileSystem) AddResourceMetadata(resource string, attName, attValue, attUnits string) error {
metadata := &types.IRODSMeta{
Name: attName,
Value: attValue,
Units: attUnits,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
err = irods_fs.AddResourceMeta(conn, resource, metadata)
if err != nil {
return err
}
return nil
}
// DeleteResourceMetadata deletes a resource metadata
func (fs *FileSystem) DeleteResourceMetadata(resource string, avuid int64) error {
metadata := &types.IRODSMeta{
AVUID: avuid,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
err = irods_fs.DeleteResourceMeta(conn, resource, metadata)
if err != nil {
return err
}
return nil
}
// DeleteResourceMetadataByName deletes a resource metadata by name
func (fs *FileSystem) DeleteResourceMetadataByName(resource string, attName string) error {
metadata := &types.IRODSMeta{
AVUID: 0,
Name: attName,
}
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return err
}
defer fs.metaSession.ReturnConnection(conn)
err = irods_fs.DeleteResourceMeta(conn, resource, metadata)
if err != nil {
return err
}
return nil
}
// ListResourceMetadata lists all resource metadata
func (fs *FileSystem) ListResourceMetadata(resource string) ([]*types.IRODSMeta, error) {
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return nil, err
}
defer fs.metaSession.ReturnConnection(conn)
metadataobjects, err := irods_fs.ListResourceMeta(conn, resource)
if err != nil {
return nil, err
}
return metadataobjects, nil
}
// searchEntriesByMeta searches entries by meta
func (fs *FileSystem) searchEntriesByMeta(metaName string, metaValue string) ([]*Entry, error) {
conn, err := fs.metaSession.AcquireConnection()
if err != nil {
return nil, err
}
defer fs.metaSession.ReturnConnection(conn)
collections, err := irods_fs.SearchCollectionsByMeta(conn, metaName, metaValue)
if err != nil {
return nil, err
}
entries := []*Entry{}
for _, coll := range collections {
entry := fs.getEntryFromCollection(coll)
entries = append(entries, entry)
// cache it
fs.cache.RemoveNegativeEntryCache(entry.Path)
fs.cache.AddEntryCache(entry)
}
dataobjects, err := irods_fs.SearchDataObjectsMasterReplicaByMeta(conn, metaName, metaValue)
if err != nil {
return nil, err
}
for _, dataobject := range dataobjects {
if len(dataobject.Replicas) == 0 {
continue
}
entry := fs.getEntryFromDataObject(dataobject)
entries = append(entries, entry)
// cache it
fs.cache.RemoveNegativeEntryCache(entry.Path)
fs.cache.AddEntryCache(entry)
}
return entries, nil
}