v0.0.125
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GPG Key ID:
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195
sq/hasher.go
Normal file
195
sq/hasher.go
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@ -0,0 +1,195 @@
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package sq
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import (
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"context"
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"crypto/sha256"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"github.com/jmoiron/sqlx"
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"gogs.mikescher.com/BlackForestBytes/goext/langext"
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"os"
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"path/filepath"
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"strings"
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)
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func HashSqliteSchema(ctx context.Context, schemaStr string) (string, error) {
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dbdir := os.TempDir()
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dbfile1 := filepath.Join(dbdir, langext.MustHexUUID()+".sqlite3")
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err := os.MkdirAll(dbdir, os.ModePerm)
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if err != nil {
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return "", err
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}
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url := fmt.Sprintf("file:%s?_journal=%s&_timeout=%d&_fk=%s&_busy_timeout=%d", dbfile1, "DELETE", 1000, "true", 1000)
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xdb, err := sqlx.Open("sqlite3", url)
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if err != nil {
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return "", err
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}
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db := NewDB(xdb)
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_, err = db.Exec(ctx, schemaStr, PP{})
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if err != nil {
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return "", err
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}
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ss, err := CreateSqliteDatabaseSchemaString(ctx, db)
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if err != nil {
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return "", err
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}
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cs := sha256.Sum256([]byte(ss))
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return hex.EncodeToString(cs[:]), nil
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}
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func CreateSqliteDatabaseSchemaString(ctx context.Context, db DB) (string, error) {
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type colInfo struct {
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Name string `db:"name"`
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Type string `db:"type"`
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NotNull string `db:"notnull"`
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Default *string `db:"dflt_value"`
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PrimaryKey *string `db:"pk"`
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}
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type idxInfo struct {
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Name string `json:"name" db:"name"`
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Unique int `json:"unique" db:"unique"`
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Origin string `json:"origin" db:"origin"`
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Patial int `json:"partial" db:"partial"`
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}
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type fkyInfo struct {
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TableDest string `json:"table_dest" db:"table"`
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From string `json:"from" db:"from"`
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To string `json:"to" db:"to"`
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OnUpdate string `json:"on_update" db:"on_update"`
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OnDelete string `json:"on_delete" db:"on_delete"`
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Match string `json:"match" db:"match"`
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}
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type tabInfo struct {
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Name string `json:"name" db:"name"`
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Type string `json:"type" db:"type"`
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NumCol int `json:"ncol" db:"ncol"`
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Strict int `json:"strict" db:"strict"`
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ColumnInfo []colInfo `json:"-"`
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IndexInfo []idxInfo `json:"-"`
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FKeyInfo []fkyInfo `json:"-"`
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}
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rowsTableList, err := db.Query(ctx, "PRAGMA table_list;", PP{})
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if err != nil {
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return "", err
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}
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tableList, err := ScanAll[tabInfo](rowsTableList, SModeFast, Unsafe, true)
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if err != nil {
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return "", err
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}
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langext.SortBy(tableList, func(v tabInfo) string { return v.Name })
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result := make([]tabInfo, 0)
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for i, tab := range tableList {
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if strings.HasPrefix(tab.Name, "sqlite_") {
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continue
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}
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{
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rowsColumnList, err := db.Query(ctx, fmt.Sprintf("PRAGMA table_info(\"%s\");", tab.Name), PP{})
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if err != nil {
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return "", err
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}
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columnList, err := ScanAll[colInfo](rowsColumnList, SModeFast, Unsafe, true)
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if err != nil {
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return "", err
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}
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langext.SortBy(columnList, func(v colInfo) string { return v.Name })
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tableList[i].ColumnInfo = columnList
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}
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{
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rowsIdxList, err := db.Query(ctx, fmt.Sprintf("PRAGMA index_list(\"%s\");", tab.Name), PP{})
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if err != nil {
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return "", err
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}
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idxList, err := ScanAll[idxInfo](rowsIdxList, SModeFast, Unsafe, true)
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if err != nil {
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return "", err
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}
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langext.SortBy(idxList, func(v idxInfo) string { return v.Name })
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tableList[i].IndexInfo = idxList
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}
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{
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rowsIdxList, err := db.Query(ctx, fmt.Sprintf("PRAGMA foreign_key_list(\"%s\");", tab.Name), PP{})
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if err != nil {
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return "", err
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}
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fkyList, err := ScanAll[fkyInfo](rowsIdxList, SModeFast, Unsafe, true)
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if err != nil {
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return "", err
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}
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langext.SortBy(fkyList, func(v fkyInfo) string { return v.From })
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tableList[i].FKeyInfo = fkyList
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}
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result = append(result, tableList[i])
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}
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strBuilderResult := ""
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for _, vTab := range result {
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jbinTable, err := json.Marshal(vTab)
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if err != nil {
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return "", err
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}
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strBuilderResult += fmt.Sprintf("#TABLE: %s\n{\n", string(jbinTable))
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for _, vCol := range vTab.ColumnInfo {
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jbinColumn, err := json.Marshal(vCol)
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if err != nil {
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return "", err
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}
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strBuilderResult += fmt.Sprintf(" COLUMN: %s\n", string(jbinColumn))
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}
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for _, vIdx := range vTab.IndexInfo {
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jbinIndex, err := json.Marshal(vIdx)
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if err != nil {
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return "", err
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}
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strBuilderResult += fmt.Sprintf(" INDEX: %s\n", string(jbinIndex))
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}
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for _, vFky := range vTab.FKeyInfo {
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jbinFKey, err := json.Marshal(vFky)
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if err != nil {
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return "", err
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}
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strBuilderResult += fmt.Sprintf(" FKEY: %s\n", string(jbinFKey))
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}
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strBuilderResult += "}\n\n"
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}
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return strBuilderResult, nil
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}
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@ -1,9 +1,13 @@
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package sq
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import (
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"context"
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"database/sql"
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"errors"
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"fmt"
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"github.com/jmoiron/sqlx"
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"reflect"
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"strings"
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)
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type StructScanMode string
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@ -16,10 +20,79 @@ const (
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type StructScanSafety string
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const (
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Safe StructScanSafety = "SAFE"
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Unsafe StructScanSafety = "UNSAFE"
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Safe StructScanSafety = "SAFE" // return error for missing fields
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Unsafe StructScanSafety = "UNSAFE" // ignore missing fields
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)
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func InsertSingle[TData any](ctx context.Context, q Queryable, tableName string, v TData) (sql.Result, error) {
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rval := reflect.ValueOf(v)
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rtyp := rval.Type()
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columns := make([]string, 0)
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params := make([]string, 0)
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pp := PP{}
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for i := 0; i < rtyp.NumField(); i++ {
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rsfield := rtyp.Field(i)
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rvfield := rval.Field(i)
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if !rsfield.IsExported() {
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continue
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}
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columnName := rsfield.Tag.Get("db")
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if columnName == "" || columnName == "-" {
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continue
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}
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paramkey := fmt.Sprintf("_%s", columnName)
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columns = append(columns, "\""+columnName+"\"")
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params = append(params, ":"+paramkey)
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pp[paramkey] = rvfield.Interface()
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}
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sqlstr := fmt.Sprintf("INSERT"+" INTO \"%s\" (%s) VALUES (%s)", tableName, strings.Join(columns, ", "), strings.Join(params, ", "))
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sqlr, err := q.Exec(ctx, sqlstr, pp)
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if err != nil {
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return nil, err
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}
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return sqlr, nil
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}
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func QuerySingle[TData any](ctx context.Context, q Queryable, sql string, pp PP, mode StructScanMode, sec StructScanSafety) (TData, error) {
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rows, err := q.Query(ctx, sql, pp)
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if err != nil {
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return *new(TData), err
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}
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data, err := ScanSingle[TData](rows, mode, sec, true)
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if err != nil {
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return *new(TData), err
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}
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return data, nil
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}
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func QueryAll[TData any](ctx context.Context, q Queryable, sql string, pp PP, mode StructScanMode, sec StructScanSafety) ([]TData, error) {
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rows, err := q.Query(ctx, sql, pp)
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if err != nil {
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return nil, err
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}
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data, err := ScanAll[TData](rows, mode, sec, true)
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if err != nil {
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return nil, err
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}
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return data, nil
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}
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func ScanSingle[TData any](rows *sqlx.Rows, mode StructScanMode, sec StructScanSafety, close bool) (TData, error) {
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if rows.Next() {
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var strscan *StructScanner
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