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 Go to latest Published: May 25, 2020 License: AGPL-3.0 Imports: 25 Imported by: 26

Documentation

Overview

Package index provides ready-to-use tables and DAOs for storing hierarchical data using the nested sets pattern

  • Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>

  • This file is part of Pydio Cells. *

  • Pydio Cells is free software: you can redistribute it and/or modify

  • it under the terms of the GNU Affero General Public License as published by

  • the Free Software Foundation, either version 3 of the License, or

  • (at your option) any later version. *

  • Pydio Cells 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 Affero General Public License for more details. *

  • You should have received a copy of the GNU Affero General Public License

  • along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>. *

  • The latest code can be found at <https://pydio.com>.

  • Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>

  • This file is part of Pydio Cells. *

  • Pydio Cells is free software: you can redistribute it and/or modify

  • it under the terms of the GNU Affero General Public License as published by

  • the Free Software Foundation, either version 3 of the License, or

  • (at your option) any later version. *

  • Pydio Cells 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 Affero General Public License for more details. *

  • You should have received a copy of the GNU Affero General Public License

  • along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>. *

  • The latest code can be found at <https://pydio.com>.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func NewDAO 

func NewDAO(o dao.DAO, rootNodeId string) dao.DAO

NewDAO for the common sql index

func NewNode 

func NewNode(treeNode *tree.Node, path mtree.MPath, filenames []string) *mtree.TreeNode

NewNode utils

Types

type BatchSend 

type BatchSend struct {
	// contains filtered or unexported fields
}

BatchSend sql structure

func NewBatchSend 

func NewBatchSend() *BatchSend

NewBatchSend Creation of the channels

func (*BatchSend) Close 

func (b *BatchSend) Close() error

Close the Batch

func (*BatchSend) Send 

func (b *BatchSend) Send(arg interface{})

Send a node to the batch

type CacheDAO 

type CacheDAO interface {
	// PathCreateNoAdd does the same as Path(create=true) but does not really
	// create the node in the cache, just find a firstAvailableIndex
	PathCreateNoAdd(strpath string) (mtree.MPath, *mtree.TreeNode, error)
}

type DAO 

type DAO interface {
	Path(strpath string, create bool, reqNode ...*tree.Node) (mtree.MPath, []*mtree.TreeNode, error)

	// Add a node in the tree
	AddNode(*mtree.TreeNode) error
	// SetNode updates a node, including its tree position
	SetNode(*mtree.TreeNode) error
	// Update a node metadata, without touching its tree position
	SetNodeMeta(*mtree.TreeNode) error
	// Remove a node from the tree
	DelNode(*mtree.TreeNode) error

	// Simple Add / Set / Delete
	AddNodeStream(int) (chan *mtree.TreeNode, chan error)
	Flush(bool) error

	// Batch Add / Set / Delete
	GetNodes(...mtree.MPath) chan *mtree.TreeNode
	SetNodes(string, int64) sql.BatchSender

	// Getters
	GetNode(mtree.MPath) (*mtree.TreeNode, error)
	GetNodeByUUID(string) (*mtree.TreeNode, error)
	GetNodeChild(mtree.MPath, string) (*mtree.TreeNode, error)
	GetNodeLastChild(mtree.MPath) (*mtree.TreeNode, error)
	GetNodeFirstAvailableChildIndex(mtree.MPath) (uint64, error)
	GetNodeChildrenCounts(mtree.MPath) (int, int)
	GetNodeChildren(mtree.MPath) chan *mtree.TreeNode
	GetNodeTree(mtree.MPath, bool) chan *mtree.TreeNode

	MoveNodeTree(nodeFrom *mtree.TreeNode, nodeTo *mtree.TreeNode) error

	PushCommit(node *mtree.TreeNode) error
	DeleteCommits(node *mtree.TreeNode) error
	ListCommits(node *mtree.TreeNode) ([]*tree.ChangeLog, error)
	ResyncDirtyEtags(rootNode *mtree.TreeNode) error
	CleanResourcesOnDeletion() (error, string)
}

DAO interface

func GetDAOCache 

func GetDAOCache(session string) DAO

GetDAOCache returns the cache based on the session name

func NewDAOCache 

func NewDAOCache(session string, d DAO) DAO

NewDAOCache wraps a cache around the dao

func NewHiddenFileDuplicateRemoverDAO 

func NewHiddenFileDuplicateRemoverDAO(dao DAO) DAO

NewHiddenFileDuplicateRemoverDAO provides a middleware implementation of the index sql dao that removes duplicate entries of the .pydio file that have the same etag at the same level

type DAOWrapper 

type DAOWrapper func(d DAO) DAO

type HiddenFileDuplicateRemoverSQL 

type HiddenFileDuplicateRemoverSQL struct {
	DAO
}

HiddenFileDuplicateRemoverSQL implementation

func (*HiddenFileDuplicateRemoverSQL) Flush 

func (dao *HiddenFileDuplicateRemoverSQL) Flush(final bool) error

Flush the database after big updates

type IndexSQL 

type IndexSQL struct {
	*sql.Handler
	// contains filtered or unexported fields
}

IndexSQL implementation

func (*IndexSQL) AddNode 

func (dao *IndexSQL) AddNode(node *mtree.TreeNode) error

AddNode to the underlying SQL DB.

func (*IndexSQL) AddNodeStream 

func (dao *IndexSQL) AddNodeStream(max int) (chan *mtree.TreeNode, chan error)

AddNodeStream creates a channel to write to the SQL database

func (*IndexSQL) CleanResourcesOnDeletion 

func (dao *IndexSQL) CleanResourcesOnDeletion() (error, string)

CleanResourcesOnDeletion revert the creation of the table for a datasource

func (*IndexSQL) DelNode 

func (dao *IndexSQL) DelNode(node *mtree.TreeNode) error

DelNode from database

func (*IndexSQL) DeleteCommits 

func (dao *IndexSQL) DeleteCommits(node *mtree.TreeNode) error

DeleteCommits removes the commit versions of the node

func (*IndexSQL) Flush 

func (dao *IndexSQL) Flush(final bool) error

Flush the database in case of cached inserts

func (*IndexSQL) GetNode 

func (dao *IndexSQL) GetNode(path mtree.MPath) (*mtree.TreeNode, error)

GetNode from path

func (*IndexSQL) GetNodeByUUID 

func (dao *IndexSQL) GetNodeByUUID(uuid string) (*mtree.TreeNode, error)

GetNodeByUUID returns the node stored with the unique uuid

func (*IndexSQL) GetNodeChild 

func (dao *IndexSQL) GetNodeChild(reqPath mtree.MPath, reqName string) (*mtree.TreeNode, error)

GetNodeChild from node path whose name matches

func (*IndexSQL) GetNodeChildren 

func (dao *IndexSQL) GetNodeChildren(path mtree.MPath) chan *mtree.TreeNode

GetNodeChildren List

func (*IndexSQL) GetNodeChildrenCounts added in v1.5.0 

func (dao *IndexSQL) GetNodeChildrenCounts(path mtree.MPath) (int, int)

GetNodeChildrenCounts List

func (*IndexSQL) GetNodeFirstAvailableChildIndex 

func (dao *IndexSQL) GetNodeFirstAvailableChildIndex(reqPath mtree.MPath) (uint64, error)

GetNodeFirstAvailableChildIndex from path

func (*IndexSQL) GetNodeLastChild 

func (dao *IndexSQL) GetNodeLastChild(reqPath mtree.MPath) (*mtree.TreeNode, error)

GetNodeLastChild from path

func (*IndexSQL) GetNodeTree 

func (dao *IndexSQL) GetNodeTree(path mtree.MPath, skipFolderSize bool) chan *mtree.TreeNode

GetNodeTree List from the path

func (*IndexSQL) GetNodes 

func (dao *IndexSQL) GetNodes(mpathes ...mtree.MPath) chan *mtree.TreeNode

GetNodes List

func (*IndexSQL) Init 

func (dao *IndexSQL) Init(options common.ConfigValues) error

Init handles the db version migration and prepare the statements

func (*IndexSQL) ListCommits 

func (dao *IndexSQL) ListCommits(node *mtree.TreeNode) (commits []*tree.ChangeLog, err error)

ListCommits returns a list of all commit versions for a node

func (*IndexSQL) MoveNodeTree 

func (dao *IndexSQL) MoveNodeTree(nodeFrom *mtree.TreeNode, nodeTo *mtree.TreeNode) (e error)

MoveNodeTree move all the nodes belonging to a tree by calculating the new mpathes

func (*IndexSQL) Path 

func (dao *IndexSQL) Path(strpath string, create bool, reqNode ...*tree.Node) (mtree.MPath, []*mtree.TreeNode, error)

func (*IndexSQL) PushCommit 

func (dao *IndexSQL) PushCommit(node *mtree.TreeNode) error

PushCommit adds a commit version to the node

func (*IndexSQL) ResyncDirtyEtags 

func (dao *IndexSQL) ResyncDirtyEtags(rootNode *mtree.TreeNode) error

ResyncDirtyEtags ensures that etags are rightly calculated

func (*IndexSQL) SetNode 

func (dao *IndexSQL) SetNode(node *mtree.TreeNode) error

SetNode in replacement of previous node

func (*IndexSQL) SetNodeMeta added in v1.6.2 

func (dao *IndexSQL) SetNodeMeta(node *mtree.TreeNode) error

SetNode in replacement of previous node

func (*IndexSQL) SetNodes 

func (dao *IndexSQL) SetNodes(etag string, deltaSize int64) sql.BatchSender

SetNodes returns a channel and waits for arriving nodes before updating them in batch.

Source Files

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