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error.go
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// Copyright (C) 2019 Yasuhiro Matsumoto <[email protected]>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package sqlite3
/*
#ifndef USE_LIBSQLITE3
#include "sqlite3-binding.h"
#else
#include <sqlite3.h>
#endif
*/
import "C"
import (
"sync"
"sync/atomic"
"syscall"
)
// ErrNo inherit errno.
type ErrNo int
// ErrNoMask is mask code.
const ErrNoMask = 0xff
// ErrNoExtended is extended errno.
type ErrNoExtended int
// Error implement sqlite error code.
type Error struct {
Code ErrNo /* The error code returned by SQLite */
ExtendedCode ErrNoExtended /* The extended error code returned by SQLite */
SystemErrno syscall.Errno /* The system errno returned by the OS through SQLite, if applicable */
err string /* The error string returned by sqlite3_errmsg(),
this usually contains more specific details. */
}
// result codes from http://www.sqlite.org/c3ref/c_abort.html
const (
ErrError = ErrNo(C.SQLITE_ERROR) /* SQL error or missing database */
ErrInternal = ErrNo(C.SQLITE_INTERNAL) /* Internal logic error in SQLite */
ErrPerm = ErrNo(C.SQLITE_PERM) /* Access permission denied */
ErrAbort = ErrNo(C.SQLITE_ABORT) /* Callback routine requested an abort */
ErrBusy = ErrNo(C.SQLITE_BUSY) /* The database file is locked */
ErrLocked = ErrNo(C.SQLITE_LOCKED) /* A table in the database is locked */
ErrNomem = ErrNo(C.SQLITE_NOMEM) /* A malloc() failed */
ErrReadonly = ErrNo(C.SQLITE_READONLY) /* Attempt to write a readonly database */
ErrInterrupt = ErrNo(C.SQLITE_INTERRUPT) /* Operation terminated by sqlite3_interrupt() */
ErrIoErr = ErrNo(C.SQLITE_IOERR) /* Some kind of disk I/O error occurred */
ErrCorrupt = ErrNo(C.SQLITE_CORRUPT) /* The database disk image is malformed */
ErrNotFound = ErrNo(C.SQLITE_NOTFOUND) /* Unknown opcode in sqlite3_file_control() */
ErrFull = ErrNo(C.SQLITE_FULL) /* Insertion failed because database is full */
ErrCantOpen = ErrNo(C.SQLITE_CANTOPEN) /* Unable to open the database file */
ErrProtocol = ErrNo(C.SQLITE_PROTOCOL) /* Database lock protocol error */
ErrEmpty = ErrNo(C.SQLITE_EMPTY) /* Database is empty */
ErrSchema = ErrNo(C.SQLITE_SCHEMA) /* The database schema changed */
ErrTooBig = ErrNo(C.SQLITE_TOOBIG) /* String or BLOB exceeds size limit */
ErrConstraint = ErrNo(C.SQLITE_CONSTRAINT) /* Abort due to constraint violation */
ErrMismatch = ErrNo(C.SQLITE_MISMATCH) /* Data type mismatch */
ErrMisuse = ErrNo(C.SQLITE_MISUSE) /* Library used incorrectly */
ErrNoLFS = ErrNo(C.SQLITE_NOLFS) /* Uses OS features not supported on host */
ErrAuth = ErrNo(C.SQLITE_AUTH) /* Authorization denied */
ErrFormat = ErrNo(C.SQLITE_FORMAT) /* Auxiliary database format error */
ErrRange = ErrNo(C.SQLITE_RANGE) /* 2nd parameter to sqlite3_bind out of range */
ErrNotADB = ErrNo(C.SQLITE_NOTADB) /* File opened that is not a database file */
ErrNotice = ErrNo(C.SQLITE_NOTICE) /* Notifications from sqlite3_log() */
ErrWarning = ErrNo(C.SQLITE_WARNING) /* Warnings from sqlite3_log() */
)
// Error return error message from errno.
func (err ErrNo) Error() string {
return Error{Code: err}.Error()
}
// Extend return extended errno.
func (err ErrNo) Extend(by int) ErrNoExtended {
return ErrNoExtended(int(err) | (by << 8))
}
// Error return error message that is extended code.
func (err ErrNoExtended) Error() string {
return Error{Code: ErrNo(C.int(err) & ErrNoMask), ExtendedCode: err}.Error()
}
func (err Error) Error() string {
var str string
if err.err != "" {
str = err.err
} else {
str = errorString(int(err.Code))
}
if err.SystemErrno != 0 {
str += ": " + err.SystemErrno.Error()
}
return str
}
// result codes from http://www.sqlite.org/c3ref/c_abort_rollback.html
const (
ErrIoErrRead = ErrNoExtended(ErrIoErr | 1<<8)
ErrIoErrShortRead = ErrNoExtended(ErrIoErr | 2<<8)
ErrIoErrWrite = ErrNoExtended(ErrIoErr | 3<<8)
ErrIoErrFsync = ErrNoExtended(ErrIoErr | 4<<8)
ErrIoErrDirFsync = ErrNoExtended(ErrIoErr | 5<<8)
ErrIoErrTruncate = ErrNoExtended(ErrIoErr | 6<<8)
ErrIoErrFstat = ErrNoExtended(ErrIoErr | 7<<8)
ErrIoErrUnlock = ErrNoExtended(ErrIoErr | 8<<8)
ErrIoErrRDlock = ErrNoExtended(ErrIoErr | 9<<8)
ErrIoErrDelete = ErrNoExtended(ErrIoErr | 10<<8)
ErrIoErrBlocked = ErrNoExtended(ErrIoErr | 11<<8)
ErrIoErrNoMem = ErrNoExtended(ErrIoErr | 12<<8)
ErrIoErrAccess = ErrNoExtended(ErrIoErr | 13<<8)
ErrIoErrCheckReservedLock = ErrNoExtended(ErrIoErr | 14<<8)
ErrIoErrLock = ErrNoExtended(ErrIoErr | 15<<8)
ErrIoErrClose = ErrNoExtended(ErrIoErr | 16<<8)
ErrIoErrDirClose = ErrNoExtended(ErrIoErr | 17<<8)
ErrIoErrSHMOpen = ErrNoExtended(ErrIoErr | 18<<8)
ErrIoErrSHMSize = ErrNoExtended(ErrIoErr | 19<<8)
ErrIoErrSHMLock = ErrNoExtended(ErrIoErr | 20<<8)
ErrIoErrSHMMap = ErrNoExtended(ErrIoErr | 21<<8)
ErrIoErrSeek = ErrNoExtended(ErrIoErr | 22<<8)
ErrIoErrDeleteNoent = ErrNoExtended(ErrIoErr | 23<<8)
ErrIoErrMMap = ErrNoExtended(ErrIoErr | 24<<8)
ErrIoErrGetTempPath = ErrNoExtended(ErrIoErr | 25<<8)
ErrIoErrConvPath = ErrNoExtended(ErrIoErr | 26<<8)
ErrLockedSharedCache = ErrNoExtended(ErrLocked | 1<<8)
ErrBusyRecovery = ErrNoExtended(ErrBusy | 1<<8)
ErrBusySnapshot = ErrNoExtended(ErrBusy | 2<<8)
ErrCantOpenNoTempDir = ErrNoExtended(ErrCantOpen | 1<<8)
ErrCantOpenIsDir = ErrNoExtended(ErrCantOpen | 2<<8)
ErrCantOpenFullPath = ErrNoExtended(ErrCantOpen | 3<<8)
ErrCantOpenConvPath = ErrNoExtended(ErrCantOpen | 4<<8)
ErrCorruptVTab = ErrNoExtended(ErrCorrupt | 1<<8)
ErrReadonlyRecovery = ErrNoExtended(ErrReadonly | 1<<8)
ErrReadonlyCantLock = ErrNoExtended(ErrReadonly | 2<<8)
ErrReadonlyRollback = ErrNoExtended(ErrReadonly | 3<<8)
ErrReadonlyDbMoved = ErrNoExtended(ErrReadonly | 4<<8)
ErrAbortRollback = ErrNoExtended(ErrAbort | 2<<8)
ErrConstraintCheck = ErrNoExtended(ErrConstraint | 1<<8)
ErrConstraintCommitHook = ErrNoExtended(ErrConstraint | 2<<8)
ErrConstraintForeignKey = ErrNoExtended(ErrConstraint | 3<<8)
ErrConstraintFunction = ErrNoExtended(ErrConstraint | 4<<8)
ErrConstraintNotNull = ErrNoExtended(ErrConstraint | 5<<8)
ErrConstraintPrimaryKey = ErrNoExtended(ErrConstraint | 6<<8)
ErrConstraintTrigger = ErrNoExtended(ErrConstraint | 7<<8)
ErrConstraintUnique = ErrNoExtended(ErrConstraint | 8<<8)
ErrConstraintVTab = ErrNoExtended(ErrConstraint | 9<<8)
ErrConstraintRowID = ErrNoExtended(ErrConstraint | 10<<8)
ErrNoticeRecoverWAL = ErrNoExtended(ErrNotice | 1<<8)
ErrNoticeRecoverRollback = ErrNoExtended(ErrNotice | 2<<8)
ErrWarningAutoIndex = ErrNoExtended(ErrWarning | 1<<8)
)
var errStrCache struct {
sync.Map // int => string
size atomic.Uint64 // size of cache
intern sync.Map // interned error messages: string => string
}
// errorString returns the result of sqlite3_errstr for result code rv,
// which may be cached.
func errorString(rv int) string {
if v, ok := errStrCache.Load(rv); ok {
return v.(string)
}
s := C.GoString(C.sqlite3_errstr(C.int(rv)))
if s == "unknown error" {
// Prevent the cache from growing unbounded by ignoring invalid
// error codes.
return "unknown error"
}
if v, loaded := errStrCache.intern.LoadOrStore(s, s); loaded {
s = v.(string)
}
// NB: This is limit is not precise and we may exceed
// it if this function is called concurrently.
//
// TODO: make the limit less than a power of 2 to reduce
// the chance that we resize the map if it is exceeded.
if errStrCache.size.Load() < 1024 {
if v, loaded := errStrCache.LoadOrStore(rv, s); loaded {
s = v.(string)
} else {
errStrCache.size.Add(1)
}
}
return s
}