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 Go to latest Published: Apr 23, 2020 License: AGPL-3.0 Imports: 25 Imported by: 0

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>.

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 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

type DAOWrapper 

type DAOWrapper func(d DAO) DAO

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 

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 

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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