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v2 #1

Merged
johnnylee merged 2 commits from v2 into master 2023-10-16 08:50:20 +00:00
Conversation 0 Commits 2 Files Changed 50 +319 -357
50 changed files with 319 additions and 357 deletions
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3
fstore/browser.go
View File

@ -3,10 +3,11 @@ package fstore
import (
"embed"
"io"
"git.crumpington.com/public/jldb/fstore/pages"
"net/http"
"os"
"path/filepath"
"git.crumpington.com/public/jldb/fstore/pages"
)
//go:embed static/*

1
fstore/command.go
View File

@ -4,6 +4,7 @@ import (
"bytes"
"encoding/binary"
"io"
"git.crumpington.com/public/jldb/lib/errs"
)

3
fstore/paths.go
View File

@ -1,9 +1,10 @@
package fstore
import (
"git.crumpington.com/public/jldb/lib/errs"
"path/filepath"
"strconv"
"git.crumpington.com/public/jldb/lib/errs"
)
func filesRootPath(rootDir string) string {

5
fstore/store-commands.go
View File

@ -1,11 +1,12 @@
package fstore
import (
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/idgen"
"log"
"os"
"path/filepath"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/idgen"
)
func (s *Store) applyStoreFromReader(cmd command) error {

5
fstore/store-rep.go
View File

@ -5,12 +5,13 @@ import (
"errors"
"io"
"io/fs"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/wal"
"net"
"os"
"path/filepath"
"time"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/wal"
)
func (s *Store) repSendState(conn net.Conn) error {

7
fstore/store.go
View File

@ -3,15 +3,16 @@ package fstore
import (
"bytes"
"io"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/idgen"
"git.crumpington.com/public/jldb/lib/rep"
"net/http"
"os"
"path/filepath"
"strconv"
"sync"
"time"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/idgen"
"git.crumpington.com/public/jldb/lib/rep"
)
type Config struct {

3
lib/atomicheader/atomicheader.go
View File

@ -3,9 +3,10 @@ package atomicheader
import (
"encoding/binary"
"hash/crc32"
"git.crumpington.com/public/jldb/lib/errs"
"os"
"sync"
"git.crumpington.com/public/jldb/lib/errs"
)
const (

3
lib/httpconn/client.go
View File

@ -6,11 +6,12 @@ import (
"crypto/tls"
"errors"
"io"
"git.crumpington.com/public/jldb/lib/errs"
"net"
"net/http"
"net/url"
"time"
"git.crumpington.com/public/jldb/lib/errs"
)
var ErrInvalidStatus = errors.New("invalid status")

51
lib/rep/functions.go
View File

@ -1,51 +0,0 @@
package rep
import (
"encoding/binary"
"encoding/json"
"git.crumpington.com/public/jldb/lib/errs"
"net"
"path/filepath"
"time"
)
// ----------------------------------------------------------------------------
func lockFilePath(rootDir string) string {
return filepath.Join(rootDir, "lock")
}
func walRootDir(rootDir string) string {
return filepath.Join(rootDir, "wal")
}
func stateFilePath(rootDir string) string {
return filepath.Join(rootDir, "state")
}
// ----------------------------------------------------------------------------
func sendJSON(
item any,
conn net.Conn,
timeout time.Duration,
) error {
buf := bufPoolGet()
defer bufPoolPut(buf)
if err := json.NewEncoder(buf).Encode(item); err != nil {
return errs.Unexpected.WithErr(err)
}
sizeBuf := make([]byte, 2)
binary.LittleEndian.PutUint16(sizeBuf, uint16(buf.Len()))
conn.SetWriteDeadline(time.Now().Add(timeout))
buffers := net.Buffers{sizeBuf, buf.Bytes()}
if _, err := buffers.WriteTo(conn); err != nil {
return errs.IO.WithErr(err)
}
return nil
}

177
lib/rep/http-client.go
View File

@ -1,178 +1,109 @@
package rep
import (
"encoding/binary"
"encoding/json"
"io"
"net"
"net/http"
"strings"
"sync"
"time"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/httpconn"
"git.crumpington.com/public/jldb/lib/wal"
"net"
"sync"
"time"
)
type client struct {
// Mutex-protected variables.
lock sync.Mutex
closed bool
conn net.Conn
client *http.Client
// The following are constant.
endpoint string
psk []byte
pskBytes [64]byte
timeout time.Duration
buf []byte
lock sync.Mutex
conn net.Conn
}
func newClient(endpoint, psk string, timeout time.Duration) *client {
b := make([]byte, 256)
copy(b, []byte(psk))
httpClient := &http.Client{
Timeout: timeout,
}
if !strings.HasSuffix(endpoint, "/") {
endpoint += "/"
}
return &client{
client: httpClient,
endpoint: endpoint,
psk: b,
pskBytes: pskToBytes(psk),
timeout: timeout,
}
}
func (c *client) GetInfo() (info Info, err error) {
err = c.withConn(cmdGetInfo, func(conn net.Conn) error {
return c.recvJSON(&info, conn, c.timeout)
})
return info, err
req, err := http.NewRequest(http.MethodGet, c.endpoint+pathGetInfo, nil)
if err != nil {
return info, errs.Unexpected.WithErr(err)
}
req.SetBasicAuth("", string(c.pskBytes[:]))
resp, err := c.client.Do(req)
if err != nil {
return info, errs.IO.WithErr(err)
}
defer resp.Body.Close()
if err := json.NewDecoder(resp.Body).Decode(&info); err != nil {
return info, errs.IO.WithErr(err)
}
return info, nil
}
func (c *client) RecvState(recv func(net.Conn) error) error {
return c.withConn(cmdSendState, recv)
err := c.dialConnect(c.endpoint + pathSendState)
if err != nil {
return err
}
defer c.conn.Close()
return recv(c.conn)
}
func (c *client) StreamWAL(w *wal.WAL) error {
return c.withConn(cmdStreamWAL, func(conn net.Conn) error {
return w.Recv(conn, c.timeout)
})
err := c.dialConnect(c.endpoint + pathStreamWAL)
if err != nil {
return err
}
defer c.conn.Close()
return w.Recv(c.conn, c.timeout)
}
func (c *client) Close() {
c.lock.Lock()
defer c.lock.Unlock()
c.closed = true
if c.conn != nil {
c.conn.Close()
c.conn = nil
}
}
// ----------------------------------------------------------------------------
func (c *client) writeCmd(cmd byte) error {
c.conn.SetWriteDeadline(time.Now().Add(c.timeout))
if _, err := c.conn.Write([]byte{cmd}); err != nil {
return errs.IO.WithErr(err)
}
return nil
}
func (c *client) dial() error {
c.conn = nil
conn, err := httpconn.Dial(c.endpoint)
func (c *client) dialConnect(endpoint string) error {
conn, err := httpconn.Dial(endpoint)
if err != nil {
return err
}
conn.SetWriteDeadline(time.Now().Add(c.timeout))
if _, err := conn.Write(c.psk); err != nil {
conn.Close()
if _, err := conn.Write(c.pskBytes[:]); err != nil {
return errs.IO.WithErr(err)
}
c.lock.Lock()
defer c.lock.Unlock()
c.conn = conn
return nil
}
func (c *client) withConn(cmd byte, fn func(net.Conn) error) error {
conn, err := c.getConn(cmd)
if err != nil {
return err
}
if err := fn(conn); err != nil {
conn.Close()
return err
}
return nil
}
func (c *client) getConn(cmd byte) (net.Conn, error) {
c.lock.Lock()
defer c.lock.Unlock()
if c.closed {
return nil, errs.IO.WithErr(io.EOF)
}
dialed := false
if c.conn == nil {
if err := c.dial(); err != nil {
return nil, err
}
dialed = true
}
if err := c.writeCmd(cmd); err != nil {
if dialed {
c.conn = nil
return nil, err
}
if err := c.dial(); err != nil {
return nil, err
}
if err := c.writeCmd(cmd); err != nil {
return nil, err
}
}
return c.conn, nil
}
func (c *client) recvJSON(
item any,
conn net.Conn,
timeout time.Duration,
) error {
if cap(c.buf) < 2 {
c.buf = make([]byte, 0, 1024)
}
buf := c.buf[:2]
conn.SetReadDeadline(time.Now().Add(timeout))
if _, err := io.ReadFull(conn, buf); err != nil {
return errs.IO.WithErr(err)
}
size := binary.LittleEndian.Uint16(buf)
if cap(buf) < int(size) {
buf = make([]byte, size)
c.buf = buf
}
buf = buf[:size]
if _, err := io.ReadFull(conn, buf); err != nil {
return errs.IO.WithErr(err)
}
if err := json.Unmarshal(buf, item); err != nil {
return errs.Unexpected.WithErr(err)
}
return nil
}

54
lib/rep/http-handler-util.go Normal file
View File

@ -0,0 +1,54 @@
package rep
import (
"crypto/subtle"
"io"
"log"
"net"
"net/http"
"time"
"git.crumpington.com/public/jldb/lib/httpconn"
)
func (rep *Replicator) handlerLogf(pattern string, args ...any) {
log.Printf("[HTTP-HANDLER] "+pattern, args...)
}
// checkBasicAuth tests whether the caller has provided the appropriate basic auth
// header. The caller should provide the PSK as the basic-auth password.
func (rep *Replicator) checkBasicAuth(w http.ResponseWriter, r *http.Request) bool {
_, pwd, _ := r.BasicAuth()
if subtle.ConstantTimeCompare([]byte(pwd), rep.pskBytes[:]) != 1 {
rep.handlerLogf("PSK mismatch.")
http.Error(w, "not authorized", http.StatusUnauthorized)
return false
}
return true
}
// acceptConnect accepts a CONNECT request and checks the PSK.
func (rep *Replicator) acceptConnect(w http.ResponseWriter, r *http.Request) net.Conn {
conn, err := httpconn.Accept(w, r)
if err != nil {
rep.handlerLogf("Failed to accept connection: %s", err)
return nil
}
psk := [64]byte{}
conn.SetReadDeadline(time.Now().Add(rep.conf.NetTimeout))
if _, err := io.ReadFull(conn, psk[:]); err != nil {
conn.Close()
rep.handlerLogf("Failed to read PSK: %v", err)
return nil
}
if subtle.ConstantTimeCompare(psk[:], rep.pskBytes[:]) != 1 {
conn.Close()
rep.handlerLogf("PSK mismatch.")
return nil
}
return conn
}

110
lib/rep/http-handler.go
View File

@ -1,79 +1,69 @@
package rep
import (
"crypto/subtle"
"git.crumpington.com/public/jldb/lib/httpconn"
"log"
"encoding/json"
"net/http"
"time"
"path"
)
const (
cmdGetInfo = 10
cmdSendState = 20
cmdStreamWAL = 30
pathGetInfo = "get-info"
pathSendState = "send-state"
pathStreamWAL = "stream-wal"
)
// ---------------------------------------------------------------------------
func (rep *Replicator) Handle(w http.ResponseWriter, r *http.Request) {
logf := func(pattern string, args ...any) {
log.Printf("[HTTP-HANDLER] "+pattern, args...)
// We'll handle two types of requests: HTTP GET requests for JSON, or
// streaming requets for state or wall.
base := path.Base(r.URL.Path)
switch base {
case pathGetInfo:
rep.handleGetInfo(w, r)
case pathSendState:
rep.handleSendState(w, r)
case pathStreamWAL:
rep.handleStreamWAL(w, r)
default:
http.Error(w, "not found", http.StatusNotFound)
}
}
func (rep *Replicator) handleGetInfo(w http.ResponseWriter, r *http.Request) {
if !rep.checkBasicAuth(w, r) {
return
}
conn, err := httpconn.Accept(w, r)
if err != nil {
logf("Failed to accept connection: %s", err)
w.Header().Set("Content-Type", "application/json")
if err := json.NewEncoder(w).Encode(rep.Info()); err != nil {
rep.handlerLogf("Failed to send info: %s", err)
}
}
func (rep *Replicator) handleSendState(w http.ResponseWriter, r *http.Request) {
conn := rep.acceptConnect(w, r)
if conn == nil {
return
}
defer conn.Close()
psk := make([]byte, 256)
conn.SetReadDeadline(time.Now().Add(rep.conf.NetTimeout))
if _, err := conn.Read(psk); err != nil {
logf("Failed to read PSK: %v", err)
return
}
expected := rep.pskBytes
if subtle.ConstantTimeCompare(expected, psk) != 1 {
logf("PSK mismatch.")
return
}
cmd := make([]byte, 1)
for {
conn.SetReadDeadline(time.Now().Add(rep.conf.NetTimeout))
if _, err := conn.Read(cmd); err != nil {
logf("Read failed: %v", err)
return
}
switch cmd[0] {
case cmdGetInfo:
if err := sendJSON(rep.Info(), conn, rep.conf.NetTimeout); err != nil {
logf("Failed to send info: %s", err)
return
}
case cmdSendState:
if err := rep.sendState(conn); err != nil {
if !rep.stopped() {
logf("Failed to send state: %s", err)
}
return
}
case cmdStreamWAL:
err := rep.wal.Send(conn, rep.conf.NetTimeout)
if !rep.stopped() {
logf("Failed when sending WAL: %s", err)
}
return
if err := rep.sendState(conn); err != nil {
if !rep.stopped() {
rep.handlerLogf("Failed to send state: %s", err)
}
}
}
func (rep *Replicator) handleStreamWAL(w http.ResponseWriter, r *http.Request) {
conn := rep.acceptConnect(w, r)
if conn == nil {
return
}
defer conn.Close()
err := rep.wal.Send(conn, rep.conf.NetTimeout)
if !rep.stopped() {
rep.handlerLogf("Failed when streaming WAL: %s", err)
}
}

17
lib/rep/paths.go Normal file
View File

@ -0,0 +1,17 @@
package rep
import (
"path/filepath"
)
func lockFilePath(rootDir string) string {
return filepath.Join(rootDir, "lock")
}
func walRootDir(rootDir string) string {
return filepath.Join(rootDir, "wal")
}
func stateFilePath(rootDir string) string {
return filepath.Join(rootDir, "state")
}

21
lib/rep/pools.go
View File

@ -1,21 +0,0 @@
package rep
import (
"bytes"
"sync"
)
var bufPool = sync.Pool{
New: func() any {
return &bytes.Buffer{}
},
}
func bufPoolGet() *bytes.Buffer {
return bufPool.Get().(*bytes.Buffer)
}
func bufPoolPut(b *bytes.Buffer) {
b.Reset()
bufPool.Put(b)
}

16
lib/rep/psk.go Normal file
View File

@ -0,0 +1,16 @@
package rep
import (
"crypto/sha256"
"encoding/hex"
)
func pskToBytes(in string) [64]byte {
b := sha256.Sum256([]byte(in))
dst := [64]byte{}
i := hex.Encode(dst[:], b[:])
if i != 64 {
panic(i)
}
return dst
}

3
lib/rep/rep-sendrecv.go
View File

@ -2,9 +2,10 @@ package rep
import (
"io"
"git.crumpington.com/public/jldb/lib/errs"
"net"
"time"
"git.crumpington.com/public/jldb/lib/errs"
)
func (rep *Replicator) sendState(conn net.Conn) error {

9
lib/rep/replicator-open.go
View File

@ -1,12 +1,13 @@
package rep
import (
"os"
"time"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/flock"
"git.crumpington.com/public/jldb/lib/wal"
"os"
"time"
)
func (rep *Replicator) loadConfigDefaults() {
@ -26,9 +27,7 @@ func (rep *Replicator) loadConfigDefaults() {
}
rep.conf = conf
rep.pskBytes = make([]byte, 256)
copy(rep.pskBytes, []byte(conf.ReplicationPSK))
rep.pskBytes = pskToBytes(conf.ReplicationPSK)
}
func (rep *Replicator) initDirectories() error {

7
lib/rep/replicator-walrecvr.go
View File

@ -30,9 +30,8 @@ func (rep *Replicator) runWALRecvrOnce() {
log.Printf("[WAL-RECVR] "+pattern, args...)
}
if err := rep.client.StreamWAL(rep.wal); err != nil {
if !rep.stopped() {
logf("Recv failed: %v", err)
}
err := rep.client.StreamWAL(rep.wal)
if !rep.stopped() {
logf("Recv failed: %v", err)
}
}

16
lib/rep/replicator.go
View File

@ -2,14 +2,15 @@ package rep
import (
"io"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/wal"
"net"
"os"
"sync"
"sync/atomic"
"time"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/wal"
)
type Config struct {
@ -59,8 +60,9 @@ type Replicator struct {
conf Config
lockFile *os.File
pskBytes []byte
wal *wal.WAL
pskBytes [64]byte // 64 ascii characters. See pskToBytes.
wal *wal.WAL
appendNotify chan struct{}
@ -161,10 +163,6 @@ func (rep *Replicator) Primary() bool {
return rep.conf.Primary
}
// TODO: Probably remove this.
// The caller may call Ack after Apply to acknowledge that the change has also
// been applied to the caller's application. Alternatively, the caller may use
// follow to apply changes to their application state.
func (rep *Replicator) ack(seqNum, timestampMS int64) error {
state := rep.getState()
state.SeqNum = seqNum

6
lib/rep/testapp_test.go
View File

@ -5,12 +5,14 @@ import (
"encoding/binary"
"encoding/json"
"io"
"git.crumpington.com/public/jldb/lib/wal"
"math/rand"
"net"
"sync"
"testing"
"time"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/wal"
)
// ----------------------------------------------------------------------------
@ -82,7 +84,7 @@ func newApp(t *testing.T, id int64, conf Config) *TestApp {
Apply: a.apply,
}, conf)
if err != nil {
t.Fatal(err)
t.Fatal(errs.FmtDetails(err))
}
return a

3
lib/wal/corrupt_test.go
View File

@ -2,8 +2,9 @@ package wal
import (
"io"
"git.crumpington.com/public/jldb/lib/errs"
"testing"
"git.crumpington.com/public/jldb/lib/errs"
)
func TestCorruptWAL(t *testing.T) {

3
lib/wal/generic_test.go
View File

@ -5,13 +5,14 @@ import (
"encoding/binary"
"errors"
"io"
"git.crumpington.com/public/jldb/lib/errs"
"math/rand"
"path/filepath"
"reflect"
"strings"
"testing"
"time"
"git.crumpington.com/public/jldb/lib/errs"
)
type waLog interface {

1
lib/wal/io.go
View File

@ -5,6 +5,7 @@ import (
"errors"
"hash/crc32"
"io"
"git.crumpington.com/public/jldb/lib/errs"
)

1
lib/wal/record.go
View File

@ -4,6 +4,7 @@ import (
"encoding/binary"
"hash/crc32"
"io"
"git.crumpington.com/public/jldb/lib/errs"
)

5
lib/wal/record_test.go
View File

@ -3,10 +3,11 @@ package wal
import (
"bytes"
"io"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/testutil"
"math/rand"
"testing"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/testutil"
)
func NewRecordForTesting() Record {

5
lib/wal/segment-iterator.go
View File

@ -1,10 +1,11 @@
package wal
import (
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
"os"
"time"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
)
type segmentIterator struct {

5
lib/wal/segment.go
View File

@ -3,11 +3,12 @@ package wal
import (
"bufio"
"io"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
"os"
"sync"
"time"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
)
type segment struct {

5
lib/wal/segment_test.go
View File

@ -4,11 +4,12 @@ import (
"bytes"
crand "crypto/rand"
"io"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
"path/filepath"
"testing"
"time"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
)
func newSegmentForTesting(t *testing.T) *segment {

3
lib/wal/wal-iterator.go
View File

@ -1,8 +1,9 @@
package wal
import (
"git.crumpington.com/public/jldb/lib/errs"
"time"
"git.crumpington.com/public/jldb/lib/errs"
)
type walIterator struct {

3
lib/wal/wal-recv.go
View File

@ -3,9 +3,10 @@ package wal
import (
"encoding/binary"
"io"
"git.crumpington.com/public/jldb/lib/errs"
"net"
"time"
"git.crumpington.com/public/jldb/lib/errs"
)
func (wal *WAL) Recv(conn net.Conn, timeout time.Duration) error {

3
lib/wal/wal-send.go
View File

@ -2,9 +2,10 @@ package wal
import (
"encoding/binary"
"git.crumpington.com/public/jldb/lib/errs"
"net"
"time"
"git.crumpington.com/public/jldb/lib/errs"
)
const (

5
lib/wal/wal-sendrecv_test.go
View File

@ -1,8 +1,6 @@
package wal
import (
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/testutil"
"log"
"math/rand"
"reflect"
@ -11,6 +9,9 @@ import (
"sync/atomic"
"testing"
"time"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/testutil"
)
func TestSendRecvHarness(t *testing.T) {

5
lib/wal/wal.go
View File

@ -2,13 +2,14 @@ package wal
import (
"io"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
"os"
"path/filepath"
"strconv"
"sync"
"time"
"git.crumpington.com/public/jldb/lib/atomicheader"
"git.crumpington.com/public/jldb/lib/errs"
)
type Config struct {

1
mdb/change/binary.go
View File

@ -3,6 +3,7 @@ package change
import (
"encoding/binary"
"io"
"git.crumpington.com/public/jldb/lib/errs"
)

1
mdb/change/change.go
View File

@ -2,6 +2,7 @@ package change
import (
"io"
"git.crumpington.com/public/jldb/lib/errs"
)

17
mdb/collection.go
View File

@ -5,9 +5,10 @@ import (
"encoding/json"
"errors"
"hash/crc64"
"git.crumpington.com/public/jldb/lib/errs"
"unsafe"
"git.crumpington.com/public/jldb/lib/errs"
"github.com/google/btree"
)
@ -189,7 +190,7 @@ func (c Collection[T]) Insert(tx *Snapshot, userItem *T) error {
for i := range c.uniqueIndices {
if c.uniqueIndices[i].insertConflict(tx, item) {
return ErrDuplicate.WithCollection(c.name).WithIndex(c.uniqueIndices[i].name)
return errs.Duplicate.WithCollection(c.name).WithIndex(c.uniqueIndices[i].name)
}
}
@ -216,12 +217,12 @@ func (c Collection[T]) Update(tx *Snapshot, userItem *T) error {
old, ok := c.ByID.get(tx, item)
if !ok {
return ErrNotFound
return errs.NotFound
}
for i := range c.uniqueIndices {
if c.uniqueIndices[i].updateConflict(tx, item) {
return ErrDuplicate.WithCollection(c.name).WithIndex(c.uniqueIndices[i].name)
return errs.Duplicate.WithCollection(c.name).WithIndex(c.uniqueIndices[i].name)
}
}
@ -239,7 +240,7 @@ func (c Collection[T]) Upsert(tx *Snapshot, item *T) error {
if err == nil {
return nil
}
if errors.Is(err, ErrDuplicate) {
if errors.Is(err, errs.Duplicate) {
return c.Update(tx, item)
}
return err
@ -261,7 +262,7 @@ func (c Collection[T]) getByID(tx *Snapshot, itemID uint64) (*T, bool) {
func (c Collection[T]) ensureMutable(tx *Snapshot) error {
if !tx.writable() {
return ErrReadOnly
return errs.ReadOnly
}
state := c.getState(tx)
@ -282,7 +283,7 @@ func (c Collection[T]) insertItem(tx *Snapshot, itemID uint64, data []byte) erro
// Check for insert conflict.
for _, index := range c.uniqueIndices {
if index.insertConflict(tx, item) {
return ErrDuplicate
return errs.Duplicate
}
}
@ -297,7 +298,7 @@ func (c Collection[T]) insertItem(tx *Snapshot, itemID uint64, data []byte) erro
func (c Collection[T]) deleteItem(tx *Snapshot, itemID uint64) error {
item, ok := c.getByID(tx, itemID)
if !ok {
return ErrNotFound
return errs.NotFound
}
tx.delete(c.collectionID, itemID)

3
mdb/crashconsistency_test.go
View File

@ -1,12 +1,13 @@
package mdb
import (
"git.crumpington.com/public/jldb/lib/errs"
"log"
"os"
"os/exec"
"testing"
"time"
"git.crumpington.com/public/jldb/lib/errs"
)
func TestCrashConsistency(t *testing.T) {

7
mdb/db-rep.go
View File

@ -1,13 +1,14 @@
package mdb
import (
"log"
"net"
"os"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/wal"
"git.crumpington.com/public/jldb/mdb/change"
"git.crumpington.com/public/jldb/mdb/pfile"
"log"
"net"
"os"
)
func (db *Database) repSendState(conn net.Conn) error {

34
mdb/db-testcases_test.go
View File

@ -6,6 +6,8 @@ import (
"reflect"
"strings"
"testing"
"git.crumpington.com/public/jldb/lib/errs"
)
type DBTestCase struct {
@ -54,7 +56,7 @@ var testDBTestCases = []DBTestCase{{
Update: func(t *testing.T, db TestDB, tx *Snapshot) error {
user, ok := db.Users.ByID.Get(tx, &User{ID: 1})
if !ok {
return ErrNotFound
return errs.NotFound
}
user.Name = "Bob"
user.Email = "b@c.com"
@ -111,7 +113,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Insert(tx, user2)
},
ExpectedUpdateError: ErrDuplicate,
ExpectedUpdateError: errs.Duplicate,
State: DBState{},
}},
@ -131,7 +133,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Insert(tx, user2)
},
ExpectedUpdateError: ErrDuplicate,
ExpectedUpdateError: errs.Duplicate,
State: DBState{},
}},
@ -162,7 +164,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Insert(tx, user)
},
ExpectedUpdateError: ErrDuplicate,
ExpectedUpdateError: errs.Duplicate,
State: DBState{
UsersByID: []User{{ID: 1, Name: "Alice", Email: "a@b.com"}},
@ -197,7 +199,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Insert(tx, user)
},
ExpectedUpdateError: ErrDuplicate,
ExpectedUpdateError: errs.Duplicate,
State: DBState{
UsersByID: []User{{ID: 1, Name: "Alice", Email: "a@b.com"}},
@ -218,7 +220,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Insert(db.Snapshot(), user)
},
ExpectedUpdateError: ErrReadOnly,
ExpectedUpdateError: errs.ReadOnly,
}},
}, {
@ -290,7 +292,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Update(tx, user)
},
ExpectedUpdateError: ErrNotFound,
ExpectedUpdateError: errs.NotFound,
State: DBState{
UsersByID: []User{{ID: 5, Name: "Alice", Email: "a@b.com"}},
@ -323,14 +325,14 @@ var testDBTestCases = []DBTestCase{{
Update: func(t *testing.T, db TestDB, tx *Snapshot) error {
user, ok := db.Users.ByID.Get(tx, &User{ID: 1})
if !ok {
return ErrNotFound
return errs.NotFound
}
user.Name = "Bob"
user.Email = "b@c.com"
return db.Users.Update(db.Snapshot(), user)
},
ExpectedUpdateError: ErrReadOnly,
ExpectedUpdateError: errs.ReadOnly,
State: DBState{
UsersByID: []User{{ID: 1, Name: "Alice", Email: "a@b.com"}},
@ -451,7 +453,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Update(tx, user2)
},
ExpectedUpdateError: ErrDuplicate,
ExpectedUpdateError: errs.Duplicate,
State: DBState{},
}},
@ -493,14 +495,14 @@ var testDBTestCases = []DBTestCase{{
Update: func(t *testing.T, db TestDB, tx *Snapshot) error {
u, ok := db.Users.ByID.Get(tx, &User{ID: 2})
if !ok {
return ErrNotFound
return errs.NotFound
}
u.Email = "a@b.com"
return db.Users.Update(tx, u)
},
ExpectedUpdateError: ErrDuplicate,
ExpectedUpdateError: errs.Duplicate,
State: DBState{
UsersByID: []User{
@ -542,7 +544,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Delete(db.Snapshot(), 1)
},
ExpectedUpdateError: ErrReadOnly,
ExpectedUpdateError: errs.ReadOnly,
State: DBState{
UsersByID: []User{{ID: 1, Name: "Alice", Email: "a@b.com"}},
@ -575,7 +577,7 @@ var testDBTestCases = []DBTestCase{{
return db.Users.Delete(tx, 2)
},
ExpectedUpdateError: ErrNotFound,
ExpectedUpdateError: errs.NotFound,
State: DBState{
UsersByID: []User{{ID: 1, Name: "Alice", Email: "a@b.com"}},
@ -609,7 +611,7 @@ var testDBTestCases = []DBTestCase{{
u, ok := db.Users.ByID.Get(tx, &User{ID: 1})
if !ok {
return ErrNotFound
return errs.NotFound
}
if !reflect.DeepEqual(u, expected) {
return errors.New("Not equal (id)")
@ -617,7 +619,7 @@ var testDBTestCases = []DBTestCase{{
u, ok = db.Users.ByEmail.Get(tx, &User{Email: "a@b.com"})
if !ok {
return ErrNotFound
return errs.NotFound
}
if !reflect.DeepEqual(u, expected) {
return errors.New("Not equal (email)")

1
mdb/db-txaggregator.go
View File

@ -2,6 +2,7 @@ package mdb
import (
"bytes"
"git.crumpington.com/public/jldb/mdb/change"
)

9
mdb/db.go
View File

@ -2,15 +2,16 @@ package mdb
import (
"fmt"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/rep"
"git.crumpington.com/public/jldb/mdb/change"
"git.crumpington.com/public/jldb/mdb/pfile"
"net/http"
"os"
"sync"
"sync/atomic"
"time"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/lib/rep"
"git.crumpington.com/public/jldb/mdb/change"
"git.crumpington.com/public/jldb/mdb/pfile"
)
type Config struct {

11
mdb/errors.go
View File

@ -1,11 +0,0 @@
package mdb
import (
"git.crumpington.com/public/jldb/lib/errs"
)
var (
ErrNotFound = errs.NotFound
ErrReadOnly = errs.ReadOnly
ErrDuplicate = errs.Duplicate
)

3
mdb/pfile/change_test.go
View File

@ -2,8 +2,9 @@ package pfile
import (
crand "crypto/rand"
"git.crumpington.com/public/jldb/mdb/change"
"math/rand"
"git.crumpington.com/public/jldb/mdb/change"
)
func randomChangeList() (changes []change.Change) {

5
mdb/pfile/main_test.go
View File

@ -3,10 +3,11 @@ package pfile
import (
"bytes"
crand "crypto/rand"
"git.crumpington.com/public/jldb/lib/wal"
"git.crumpington.com/public/jldb/mdb/change"
"path/filepath"
"testing"
"git.crumpington.com/public/jldb/lib/wal"
"git.crumpington.com/public/jldb/mdb/change"
)
func newForTesting(t *testing.T) (*File, *Index) {

5
mdb/pfile/page.go
View File

@ -2,8 +2,9 @@ package pfile
import (
"hash/crc32"
"git.crumpington.com/public/jldb/lib/errs"
"unsafe"
"git.crumpington.com/public/jldb/lib/errs"
)
// ----------------------------------------------------------------------------
@ -30,7 +31,7 @@ var emptyPage = func() dataPage {
type pageHeader struct {
CRC uint32 // IEEE CRC-32 checksum.
PageType uint32 // One of the PageType* constants.
CollectionID uint64 //
CollectionID uint64 //
ItemID uint64
DataSize uint64
NextPage uint64

3
mdb/pfile/page_test.go
View File

@ -3,9 +3,10 @@ package pfile
import (
"bytes"
crand "crypto/rand"
"git.crumpington.com/public/jldb/lib/errs"
"math/rand"
"testing"
"git.crumpington.com/public/jldb/lib/errs"
)
func randomPage(t *testing.T) dataPage {

5
mdb/pfile/pagefile.go
View File

@ -6,12 +6,13 @@ import (
"compress/gzip"
"encoding/binary"
"io"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/mdb/change"
"net"
"os"
"sync"
"time"
"git.crumpington.com/public/jldb/lib/errs"
"git.crumpington.com/public/jldb/mdb/change"
)
type File struct {

1
mdb/pfile/record_test.go
View File

@ -2,6 +2,7 @@ package pfile
import (
"bytes"
"git.crumpington.com/public/jldb/lib/wal"
"git.crumpington.com/public/jldb/mdb/change"
)

3
mdb/snapshot.go
View File

@ -3,8 +3,9 @@ package mdb
import (
"bytes"
"encoding/json"
"git.crumpington.com/public/jldb/mdb/change"
"sync/atomic"
"git.crumpington.com/public/jldb/mdb/change"
)
type Snapshot struct {

3
mdb/testing/crashconsistency/main.go
View File

@ -4,7 +4,6 @@ import (
"crypto/rand"
"errors"
"hash/crc32"
"git.crumpington.com/public/jldb/mdb"
"log"
mrand "math/rand"
"os"
@ -13,6 +12,8 @@ import (
"sync"
"sync/atomic"
"time"
"git.crumpington.com/public/jldb/mdb"
)
type DataItem struct {