storj/pkg/piecestore/pstore.go

123 lines
2.8 KiB
Go
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2019-01-24 20:15:10 +00:00
// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package pstore
import (
"context"
"io"
"os"
"path/filepath"
"github.com/shirou/gopsutil/disk"
"github.com/zeebo/errs"
"storj.io/storj/pkg/ranger"
)
// Storage stores piecestore pieces
type Storage struct {
dir string
}
// NewStorage creates database for storing pieces
func NewStorage(dir string) *Storage {
return &Storage{dir}
}
// Close closes resources
func (storage *Storage) Close() error { return nil }
// DiskInfo contains statistics about the disk
type DiskInfo struct {
AvailableSpace int64 // TODO: use memory.Size
}
// Info returns information about the current state of the dir
func (storage *Storage) Info() (DiskInfo, error) {
rootPath := filepath.Dir(filepath.Clean(storage.dir))
diskSpace, err := disk.Usage(rootPath)
if err != nil {
return DiskInfo{}, err
}
return DiskInfo{
AvailableSpace: int64(diskSpace.Free),
}, nil
}
Added rpc server (#40) * Added piecestore * gofmt * Added requested changes * Added cli * Removed ranger because I wanted something that can stand alone * Add example of http server using piece store * Changed piecestore code to make it more optial for error handelling * Merged with piecestore * Added missing package * Forgot io import * gofmt * gofmt * Forgot io * Make path by hash exported * updated to simplify again whoops * Updated server to work real good * Forgot ampersand * Updated to match FilePiece * Merged in cam's delete code * Remove unused io * Added RPC code * Give the download request a reader * Removed http server stuff; changed receive stream to say io.reader * Added expiration date to shardInfo * Change all instances of Shard to Piece; change protobuf name; moved client insance to outside functions * added ttl info request * Move scripts to http server pr; added close method for Retrieve api * added rpc server tests for getting piece meta data and retrieval routes * Resolved linter errors, moved to prc server to pkg, updated go.mod to use latest protobuf * Imported cams test * Bump gometalinter deadline * WIP adding tests * added tests for store and delete routes * Add changes as requested by Kaloyan, also cleaned up some code * Get the code actually working whoops * More cleanup * Separating database calls from api.go * need to rename expiration * Added some changes requested by JT * Fix read size * Fixed total amount to read * added tests * Simplify protobuf, add store tests, edited api to handle invalid stores properly, return errors instead of messages * Moved rpc client and server to piece store * Moved piecestore protobuf to the /protos folder * Cleaned up messages * Clean up linter errors * Added missing sqlite import * Add ability to do iterative reads and writes to pstore * Incrementally read data * Fix linter and import errors * Solve linter Error * Change return types * begin test refactor * refactored to implement only 1 db connection, moved SQLite row checking into separate function and removed defer on rows.Close(), fixed os.tempDir in rpc_test.go * Cleaning up tests * Added retrieve tests * refactored delete tests * Deleted old tests * Updated cmd/piecestore to reflect changes to piecestore * Refactored server tests and server/client store code * gofmt * WIP implementing TTL struct * Read 4k at a time when Retrieving * implemented ttl struct * Accidentally removed fpiece dependency? * Double resolve merge conflict * Moved client to the examples since it is an example * Change hash to id in protobuf. TODO: Change client and server to reflect these changes * Update client and protobuf * changed hash to id * Handle eof properly in retrieve * Id -> ID * forgot to change import for client after moving * Moved client and server main to examples * Made changes requested by JT * checkEntries is now private, created currentTime variable for checkEntries, added defer rows.Close() * Print not fatal * Handle overflow when reading from server * added const IDLength * removed types from comments * Add reader/writer for download data from and uploading data to server * goimports and comments * fixed nits, casts, added OK const, DBCleanup now exits program on error * Add stream reader and writer for server * Fix errors * i beforee except after c lol * customizable data dir * Forgot to rename variable * customizable data dir * Handle closing of server stream properly * linter * pass on inserting the same data twice * linter * linter * Do the easy things JT asked for * Handle overflow from reads properly; handle custom db path * Handle overflow for server stream read; TODO Combine server and client stream reads * Allow for TTL of 0 to stay forever * Make Client cleaner for user
2018-06-02 19:14:59 +01:00
// IDLength -- Minimum ID length
const IDLength = 20
// Errors
var (
Error = errs.Class("piecestore error")
MkDir = errs.Class("piecestore MkdirAll")
Open = errs.Class("piecestore OpenFile")
)
// PiecePath creates piece storage path from id and dir
func (storage *Storage) PiecePath(pieceID string) (string, error) {
if len(pieceID) < IDLength {
return "", Error.New("invalid id length")
}
folder1, folder2, filename := pieceID[0:2], pieceID[2:4], pieceID[4:]
return filepath.Join(storage.dir, folder1, folder2, filename), nil
}
// Writer returns a writer that can be used to store piece.
func (storage *Storage) Writer(pieceID string) (io.WriteCloser, error) {
path, err := storage.PiecePath(pieceID)
if err != nil {
Added rpc server (#40) * Added piecestore * gofmt * Added requested changes * Added cli * Removed ranger because I wanted something that can stand alone * Add example of http server using piece store * Changed piecestore code to make it more optial for error handelling * Merged with piecestore * Added missing package * Forgot io import * gofmt * gofmt * Forgot io * Make path by hash exported * updated to simplify again whoops * Updated server to work real good * Forgot ampersand * Updated to match FilePiece * Merged in cam's delete code * Remove unused io * Added RPC code * Give the download request a reader * Removed http server stuff; changed receive stream to say io.reader * Added expiration date to shardInfo * Change all instances of Shard to Piece; change protobuf name; moved client insance to outside functions * added ttl info request * Move scripts to http server pr; added close method for Retrieve api * added rpc server tests for getting piece meta data and retrieval routes * Resolved linter errors, moved to prc server to pkg, updated go.mod to use latest protobuf * Imported cams test * Bump gometalinter deadline * WIP adding tests * added tests for store and delete routes * Add changes as requested by Kaloyan, also cleaned up some code * Get the code actually working whoops * More cleanup * Separating database calls from api.go * need to rename expiration * Added some changes requested by JT * Fix read size * Fixed total amount to read * added tests * Simplify protobuf, add store tests, edited api to handle invalid stores properly, return errors instead of messages * Moved rpc client and server to piece store * Moved piecestore protobuf to the /protos folder * Cleaned up messages * Clean up linter errors * Added missing sqlite import * Add ability to do iterative reads and writes to pstore * Incrementally read data * Fix linter and import errors * Solve linter Error * Change return types * begin test refactor * refactored to implement only 1 db connection, moved SQLite row checking into separate function and removed defer on rows.Close(), fixed os.tempDir in rpc_test.go * Cleaning up tests * Added retrieve tests * refactored delete tests * Deleted old tests * Updated cmd/piecestore to reflect changes to piecestore * Refactored server tests and server/client store code * gofmt * WIP implementing TTL struct * Read 4k at a time when Retrieving * implemented ttl struct * Accidentally removed fpiece dependency? * Double resolve merge conflict * Moved client to the examples since it is an example * Change hash to id in protobuf. TODO: Change client and server to reflect these changes * Update client and protobuf * changed hash to id * Handle eof properly in retrieve * Id -> ID * forgot to change import for client after moving * Moved client and server main to examples * Made changes requested by JT * checkEntries is now private, created currentTime variable for checkEntries, added defer rows.Close() * Print not fatal * Handle overflow when reading from server * added const IDLength * removed types from comments * Add reader/writer for download data from and uploading data to server * goimports and comments * fixed nits, casts, added OK const, DBCleanup now exits program on error * Add stream reader and writer for server * Fix errors * i beforee except after c lol * customizable data dir * Forgot to rename variable * customizable data dir * Handle closing of server stream properly * linter * pass on inserting the same data twice * linter * linter * Do the easy things JT asked for * Handle overflow from reads properly; handle custom db path * Handle overflow for server stream read; TODO Combine server and client stream reads * Allow for TTL of 0 to stay forever * Make Client cleaner for user
2018-06-02 19:14:59 +01:00
return nil, err
}
if err = os.MkdirAll(filepath.Dir(path), 0700); err != nil {
return nil, MkDir.Wrap(err)
}
file, err := os.OpenFile(path, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0600)
if err != nil {
return nil, Open.Wrap(err)
}
return file, nil
}
// Reader returns a reader for the specified piece at the location
func (storage *Storage) Reader(ctx context.Context, pieceID string, offset int64, length int64) (io.ReadCloser, error) {
path, err := storage.PiecePath(pieceID)
if err != nil {
Added rpc server (#40) * Added piecestore * gofmt * Added requested changes * Added cli * Removed ranger because I wanted something that can stand alone * Add example of http server using piece store * Changed piecestore code to make it more optial for error handelling * Merged with piecestore * Added missing package * Forgot io import * gofmt * gofmt * Forgot io * Make path by hash exported * updated to simplify again whoops * Updated server to work real good * Forgot ampersand * Updated to match FilePiece * Merged in cam's delete code * Remove unused io * Added RPC code * Give the download request a reader * Removed http server stuff; changed receive stream to say io.reader * Added expiration date to shardInfo * Change all instances of Shard to Piece; change protobuf name; moved client insance to outside functions * added ttl info request * Move scripts to http server pr; added close method for Retrieve api * added rpc server tests for getting piece meta data and retrieval routes * Resolved linter errors, moved to prc server to pkg, updated go.mod to use latest protobuf * Imported cams test * Bump gometalinter deadline * WIP adding tests * added tests for store and delete routes * Add changes as requested by Kaloyan, also cleaned up some code * Get the code actually working whoops * More cleanup * Separating database calls from api.go * need to rename expiration * Added some changes requested by JT * Fix read size * Fixed total amount to read * added tests * Simplify protobuf, add store tests, edited api to handle invalid stores properly, return errors instead of messages * Moved rpc client and server to piece store * Moved piecestore protobuf to the /protos folder * Cleaned up messages * Clean up linter errors * Added missing sqlite import * Add ability to do iterative reads and writes to pstore * Incrementally read data * Fix linter and import errors * Solve linter Error * Change return types * begin test refactor * refactored to implement only 1 db connection, moved SQLite row checking into separate function and removed defer on rows.Close(), fixed os.tempDir in rpc_test.go * Cleaning up tests * Added retrieve tests * refactored delete tests * Deleted old tests * Updated cmd/piecestore to reflect changes to piecestore * Refactored server tests and server/client store code * gofmt * WIP implementing TTL struct * Read 4k at a time when Retrieving * implemented ttl struct * Accidentally removed fpiece dependency? * Double resolve merge conflict * Moved client to the examples since it is an example * Change hash to id in protobuf. TODO: Change client and server to reflect these changes * Update client and protobuf * changed hash to id * Handle eof properly in retrieve * Id -> ID * forgot to change import for client after moving * Moved client and server main to examples * Made changes requested by JT * checkEntries is now private, created currentTime variable for checkEntries, added defer rows.Close() * Print not fatal * Handle overflow when reading from server * added const IDLength * removed types from comments * Add reader/writer for download data from and uploading data to server * goimports and comments * fixed nits, casts, added OK const, DBCleanup now exits program on error * Add stream reader and writer for server * Fix errors * i beforee except after c lol * customizable data dir * Forgot to rename variable * customizable data dir * Handle closing of server stream properly * linter * pass on inserting the same data twice * linter * linter * Do the easy things JT asked for * Handle overflow from reads properly; handle custom db path * Handle overflow for server stream read; TODO Combine server and client stream reads * Allow for TTL of 0 to stay forever * Make Client cleaner for user
2018-06-02 19:14:59 +01:00
return nil, err
}
info, err := os.Stat(path)
if err != nil {
Added rpc server (#40) * Added piecestore * gofmt * Added requested changes * Added cli * Removed ranger because I wanted something that can stand alone * Add example of http server using piece store * Changed piecestore code to make it more optial for error handelling * Merged with piecestore * Added missing package * Forgot io import * gofmt * gofmt * Forgot io * Make path by hash exported * updated to simplify again whoops * Updated server to work real good * Forgot ampersand * Updated to match FilePiece * Merged in cam's delete code * Remove unused io * Added RPC code * Give the download request a reader * Removed http server stuff; changed receive stream to say io.reader * Added expiration date to shardInfo * Change all instances of Shard to Piece; change protobuf name; moved client insance to outside functions * added ttl info request * Move scripts to http server pr; added close method for Retrieve api * added rpc server tests for getting piece meta data and retrieval routes * Resolved linter errors, moved to prc server to pkg, updated go.mod to use latest protobuf * Imported cams test * Bump gometalinter deadline * WIP adding tests * added tests for store and delete routes * Add changes as requested by Kaloyan, also cleaned up some code * Get the code actually working whoops * More cleanup * Separating database calls from api.go * need to rename expiration * Added some changes requested by JT * Fix read size * Fixed total amount to read * added tests * Simplify protobuf, add store tests, edited api to handle invalid stores properly, return errors instead of messages * Moved rpc client and server to piece store * Moved piecestore protobuf to the /protos folder * Cleaned up messages * Clean up linter errors * Added missing sqlite import * Add ability to do iterative reads and writes to pstore * Incrementally read data * Fix linter and import errors * Solve linter Error * Change return types * begin test refactor * refactored to implement only 1 db connection, moved SQLite row checking into separate function and removed defer on rows.Close(), fixed os.tempDir in rpc_test.go * Cleaning up tests * Added retrieve tests * refactored delete tests * Deleted old tests * Updated cmd/piecestore to reflect changes to piecestore * Refactored server tests and server/client store code * gofmt * WIP implementing TTL struct * Read 4k at a time when Retrieving * implemented ttl struct * Accidentally removed fpiece dependency? * Double resolve merge conflict * Moved client to the examples since it is an example * Change hash to id in protobuf. TODO: Change client and server to reflect these changes * Update client and protobuf * changed hash to id * Handle eof properly in retrieve * Id -> ID * forgot to change import for client after moving * Moved client and server main to examples * Made changes requested by JT * checkEntries is now private, created currentTime variable for checkEntries, added defer rows.Close() * Print not fatal * Handle overflow when reading from server * added const IDLength * removed types from comments * Add reader/writer for download data from and uploading data to server * goimports and comments * fixed nits, casts, added OK const, DBCleanup now exits program on error * Add stream reader and writer for server * Fix errors * i beforee except after c lol * customizable data dir * Forgot to rename variable * customizable data dir * Handle closing of server stream properly * linter * pass on inserting the same data twice * linter * linter * Do the easy things JT asked for * Handle overflow from reads properly; handle custom db path * Handle overflow for server stream read; TODO Combine server and client stream reads * Allow for TTL of 0 to stay forever * Make Client cleaner for user
2018-06-02 19:14:59 +01:00
return nil, err
}
if offset >= info.Size() || offset < 0 {
return nil, Error.New("invalid offset: %v", offset)
}
if length <= -1 {
length = info.Size()
}
// If trying to read past the end of the file, just read to the end
if info.Size() < offset+length {
length = info.Size() - offset
}
rr, err := ranger.FileRanger(path)
if err != nil {
return nil, err
}
return rr.Range(ctx, offset, length)
}
// Delete deletes piece from storage
func (storage *Storage) Delete(pieceID string) error {
path, err := storage.PiecePath(pieceID)
if err != nil {
return err
}
err = os.Remove(path)
if os.IsNotExist(err) {
err = nil
}
return err
}