mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-11-01 15:00:00 +00:00
297 lines
8.6 KiB
Go
297 lines
8.6 KiB
Go
package sqlite3
|
|
|
|
import (
|
|
"context"
|
|
|
|
"github.com/ncruces/go-sqlite3/internal/util"
|
|
"github.com/ncruces/go-sqlite3/vfs"
|
|
"github.com/tetratelabs/wazero/api"
|
|
)
|
|
|
|
// Config makes configuration changes to a database connection.
|
|
// Only boolean configuration options are supported.
|
|
// Called with no arg reads the current configuration value,
|
|
// called with one arg sets and returns the new value.
|
|
//
|
|
// https://sqlite.org/c3ref/db_config.html
|
|
func (c *Conn) Config(op DBConfig, arg ...bool) (bool, error) {
|
|
defer c.arena.mark()()
|
|
argsPtr := c.arena.new(2 * ptrlen)
|
|
|
|
var flag int
|
|
switch {
|
|
case len(arg) == 0:
|
|
flag = -1
|
|
case arg[0]:
|
|
flag = 1
|
|
}
|
|
|
|
util.WriteUint32(c.mod, argsPtr+0*ptrlen, uint32(flag))
|
|
util.WriteUint32(c.mod, argsPtr+1*ptrlen, argsPtr)
|
|
|
|
r := c.call("sqlite3_db_config", uint64(c.handle),
|
|
uint64(op), uint64(argsPtr))
|
|
return util.ReadUint32(c.mod, argsPtr) != 0, c.error(r)
|
|
}
|
|
|
|
// ConfigLog sets up the error logging callback for the connection.
|
|
//
|
|
// https://sqlite.org/errlog.html
|
|
func (c *Conn) ConfigLog(cb func(code ExtendedErrorCode, msg string)) error {
|
|
var enable uint64
|
|
if cb != nil {
|
|
enable = 1
|
|
}
|
|
r := c.call("sqlite3_config_log_go", enable)
|
|
if err := c.error(r); err != nil {
|
|
return err
|
|
}
|
|
c.log = cb
|
|
return nil
|
|
}
|
|
|
|
func logCallback(ctx context.Context, mod api.Module, _, iCode, zMsg uint32) {
|
|
if c, ok := ctx.Value(connKey{}).(*Conn); ok && c.log != nil {
|
|
msg := util.ReadString(mod, zMsg, _MAX_LENGTH)
|
|
c.log(xErrorCode(iCode), msg)
|
|
}
|
|
}
|
|
|
|
// FileControl allows low-level control of database files.
|
|
// Only a subset of opcodes are supported.
|
|
//
|
|
// https://sqlite.org/c3ref/file_control.html
|
|
func (c *Conn) FileControl(schema string, op FcntlOpcode, arg ...any) (any, error) {
|
|
defer c.arena.mark()()
|
|
|
|
var schemaPtr uint32
|
|
if schema != "" {
|
|
schemaPtr = c.arena.string(schema)
|
|
}
|
|
|
|
switch op {
|
|
case FCNTL_RESET_CACHE:
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), 0)
|
|
return nil, c.error(r)
|
|
|
|
case FCNTL_PERSIST_WAL, FCNTL_POWERSAFE_OVERWRITE:
|
|
var flag int
|
|
switch {
|
|
case len(arg) == 0:
|
|
flag = -1
|
|
case arg[0]:
|
|
flag = 1
|
|
}
|
|
ptr := c.arena.new(4)
|
|
util.WriteUint32(c.mod, ptr, uint32(flag))
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), uint64(ptr))
|
|
return util.ReadUint32(c.mod, ptr) != 0, c.error(r)
|
|
|
|
case FCNTL_CHUNK_SIZE:
|
|
ptr := c.arena.new(4)
|
|
util.WriteUint32(c.mod, ptr, uint32(arg[0].(int)))
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), uint64(ptr))
|
|
return nil, c.error(r)
|
|
|
|
case FCNTL_RESERVE_BYTES:
|
|
bytes := -1
|
|
if len(arg) > 0 {
|
|
bytes = arg[0].(int)
|
|
}
|
|
ptr := c.arena.new(4)
|
|
util.WriteUint32(c.mod, ptr, uint32(bytes))
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), uint64(ptr))
|
|
return int(util.ReadUint32(c.mod, ptr)), c.error(r)
|
|
|
|
case FCNTL_DATA_VERSION:
|
|
ptr := c.arena.new(4)
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), uint64(ptr))
|
|
return util.ReadUint32(c.mod, ptr), c.error(r)
|
|
|
|
case FCNTL_LOCKSTATE:
|
|
ptr := c.arena.new(4)
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), uint64(ptr))
|
|
return vfs.LockLevel(util.ReadUint32(c.mod, ptr)), c.error(r)
|
|
|
|
case FCNTL_VFS_POINTER:
|
|
ptr := c.arena.new(4)
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), uint64(ptr))
|
|
const zNameOffset = 16
|
|
ptr = util.ReadUint32(c.mod, ptr)
|
|
ptr = util.ReadUint32(c.mod, ptr+zNameOffset)
|
|
name := util.ReadString(c.mod, ptr, _MAX_NAME)
|
|
return vfs.Find(name), c.error(r)
|
|
|
|
case FCNTL_FILE_POINTER, FCNTL_JOURNAL_POINTER:
|
|
ptr := c.arena.new(4)
|
|
r := c.call("sqlite3_file_control",
|
|
uint64(c.handle), uint64(schemaPtr),
|
|
uint64(op), uint64(ptr))
|
|
const fileHandleOffset = 4
|
|
ptr = util.ReadUint32(c.mod, ptr)
|
|
ptr = util.ReadUint32(c.mod, ptr+fileHandleOffset)
|
|
return util.GetHandle(c.ctx, ptr), c.error(r)
|
|
}
|
|
|
|
return nil, MISUSE
|
|
}
|
|
|
|
// Limit allows the size of various constructs to be
|
|
// limited on a connection by connection basis.
|
|
//
|
|
// https://sqlite.org/c3ref/limit.html
|
|
func (c *Conn) Limit(id LimitCategory, value int) int {
|
|
r := c.call("sqlite3_limit", uint64(c.handle), uint64(id), uint64(value))
|
|
return int(int32(r))
|
|
}
|
|
|
|
// SetAuthorizer registers an authorizer callback with the database connection.
|
|
//
|
|
// https://sqlite.org/c3ref/set_authorizer.html
|
|
func (c *Conn) SetAuthorizer(cb func(action AuthorizerActionCode, name3rd, name4th, schema, inner string) AuthorizerReturnCode) error {
|
|
var enable uint64
|
|
if cb != nil {
|
|
enable = 1
|
|
}
|
|
r := c.call("sqlite3_set_authorizer_go", uint64(c.handle), enable)
|
|
if err := c.error(r); err != nil {
|
|
return err
|
|
}
|
|
c.authorizer = cb
|
|
return nil
|
|
|
|
}
|
|
|
|
func authorizerCallback(ctx context.Context, mod api.Module, pDB uint32, action AuthorizerActionCode, zName3rd, zName4th, zSchema, zInner uint32) (rc AuthorizerReturnCode) {
|
|
if c, ok := ctx.Value(connKey{}).(*Conn); ok && c.handle == pDB && c.authorizer != nil {
|
|
var name3rd, name4th, schema, inner string
|
|
if zName3rd != 0 {
|
|
name3rd = util.ReadString(mod, zName3rd, _MAX_NAME)
|
|
}
|
|
if zName4th != 0 {
|
|
name4th = util.ReadString(mod, zName4th, _MAX_NAME)
|
|
}
|
|
if zSchema != 0 {
|
|
schema = util.ReadString(mod, zSchema, _MAX_NAME)
|
|
}
|
|
if zInner != 0 {
|
|
inner = util.ReadString(mod, zInner, _MAX_NAME)
|
|
}
|
|
rc = c.authorizer(action, name3rd, name4th, schema, inner)
|
|
}
|
|
return rc
|
|
}
|
|
|
|
// Trace registers a trace callback function against the database connection.
|
|
//
|
|
// https://sqlite.org/c3ref/trace_v2.html
|
|
func (c *Conn) Trace(mask TraceEvent, cb func(evt TraceEvent, arg1 any, arg2 any) error) error {
|
|
r := c.call("sqlite3_trace_go", uint64(c.handle), uint64(mask))
|
|
if err := c.error(r); err != nil {
|
|
return err
|
|
}
|
|
c.trace = cb
|
|
return nil
|
|
}
|
|
|
|
func traceCallback(ctx context.Context, mod api.Module, evt TraceEvent, pDB, pArg1, pArg2 uint32) (rc uint32) {
|
|
if c, ok := ctx.Value(connKey{}).(*Conn); ok && c.handle == pDB && c.trace != nil {
|
|
var arg1, arg2 any
|
|
if evt == TRACE_CLOSE {
|
|
arg1 = c
|
|
} else {
|
|
for _, s := range c.stmts {
|
|
if pArg1 == s.handle {
|
|
arg1 = s
|
|
switch evt {
|
|
case TRACE_STMT:
|
|
arg2 = s.SQL()
|
|
case TRACE_PROFILE:
|
|
arg2 = int64(util.ReadUint64(mod, pArg2))
|
|
}
|
|
break
|
|
}
|
|
}
|
|
}
|
|
if arg1 != nil {
|
|
_, rc = errorCode(c.trace(evt, arg1, arg2), ERROR)
|
|
}
|
|
}
|
|
return rc
|
|
}
|
|
|
|
// WalCheckpoint checkpoints a WAL database.
|
|
//
|
|
// https://sqlite.org/c3ref/wal_checkpoint_v2.html
|
|
func (c *Conn) WalCheckpoint(schema string, mode CheckpointMode) (nLog, nCkpt int, err error) {
|
|
defer c.arena.mark()()
|
|
nLogPtr := c.arena.new(ptrlen)
|
|
nCkptPtr := c.arena.new(ptrlen)
|
|
schemaPtr := c.arena.string(schema)
|
|
r := c.call("sqlite3_wal_checkpoint_v2",
|
|
uint64(c.handle), uint64(schemaPtr), uint64(mode),
|
|
uint64(nLogPtr), uint64(nCkptPtr))
|
|
nLog = int(int32(util.ReadUint32(c.mod, nLogPtr)))
|
|
nCkpt = int(int32(util.ReadUint32(c.mod, nCkptPtr)))
|
|
return nLog, nCkpt, c.error(r)
|
|
}
|
|
|
|
// WalAutoCheckpoint configures WAL auto-checkpoints.
|
|
//
|
|
// https://sqlite.org/c3ref/wal_autocheckpoint.html
|
|
func (c *Conn) WalAutoCheckpoint(pages int) error {
|
|
r := c.call("sqlite3_wal_autocheckpoint", uint64(c.handle), uint64(pages))
|
|
return c.error(r)
|
|
}
|
|
|
|
// WalHook registers a callback function to be invoked
|
|
// each time data is committed to a database in WAL mode.
|
|
//
|
|
// https://sqlite.org/c3ref/wal_hook.html
|
|
func (c *Conn) WalHook(cb func(db *Conn, schema string, pages int) error) {
|
|
var enable uint64
|
|
if cb != nil {
|
|
enable = 1
|
|
}
|
|
c.call("sqlite3_wal_hook_go", uint64(c.handle), enable)
|
|
c.wal = cb
|
|
}
|
|
|
|
func walCallback(ctx context.Context, mod api.Module, _, pDB, zSchema uint32, pages int32) (rc uint32) {
|
|
if c, ok := ctx.Value(connKey{}).(*Conn); ok && c.handle == pDB && c.wal != nil {
|
|
schema := util.ReadString(mod, zSchema, _MAX_NAME)
|
|
err := c.wal(c, schema, int(pages))
|
|
_, rc = errorCode(err, ERROR)
|
|
}
|
|
return rc
|
|
}
|
|
|
|
// AutoVacuumPages registers a autovacuum compaction amount callback.
|
|
//
|
|
// https://sqlite.org/c3ref/autovacuum_pages.html
|
|
func (c *Conn) AutoVacuumPages(cb func(schema string, dbPages, freePages, bytesPerPage uint) uint) error {
|
|
funcPtr := util.AddHandle(c.ctx, cb)
|
|
r := c.call("sqlite3_autovacuum_pages_go", uint64(c.handle), uint64(funcPtr))
|
|
return c.error(r)
|
|
}
|
|
|
|
func autoVacuumCallback(ctx context.Context, mod api.Module, pApp, zSchema, nDbPage, nFreePage, nBytePerPage uint32) uint32 {
|
|
fn := util.GetHandle(ctx, pApp).(func(schema string, dbPages, freePages, bytesPerPage uint) uint)
|
|
schema := util.ReadString(mod, zSchema, _MAX_NAME)
|
|
return uint32(fn(schema, uint(nDbPage), uint(nFreePage), uint(nBytePerPage)))
|
|
}
|