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Use JSONB instead of JSON for context object in SQLite. (#871)
Use `jsonb` type instead of `json` for metric `context` object.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| package types | ||
|
|
||
| import ( | ||
| "context" | ||
| "database/sql/driver" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
|
|
||
| "gorm.io/gorm" | ||
| "gorm.io/gorm/clause" | ||
| "gorm.io/gorm/schema" | ||
| ) | ||
|
|
||
| // JSONB defined JSONB data type, need to implements driver.Valuer, sql.Scanner interface | ||
| type JSONB json.RawMessage | ||
|
|
||
| // Value return json value, implement driver.Valuer interface | ||
| func (j JSONB) Value() (driver.Value, error) { | ||
| if len(j) == 0 { | ||
| return nil, nil | ||
| } | ||
| return string(j), nil | ||
| } | ||
|
|
||
| // Scan scan value into Jsonb, implements sql.Scanner interface | ||
| func (j *JSONB) Scan(value interface{}) error { | ||
| if value == nil { | ||
| *j = JSONB("null") | ||
| return nil | ||
| } | ||
| var bytes []byte | ||
| switch v := value.(type) { | ||
| case []byte: | ||
| if len(v) > 0 { | ||
| bytes = make([]byte, len(v)) | ||
| copy(bytes, v) | ||
| } | ||
| case string: | ||
| bytes = []byte(v) | ||
| default: | ||
| return errors.New(fmt.Sprint("Failed to unmarshal JSONB value:", value)) | ||
| } | ||
|
|
||
| result := json.RawMessage(bytes) | ||
| *j = JSONB(result) | ||
| return nil | ||
| } | ||
|
|
||
| // MarshalJSON to output non base64 encoded []byte | ||
| func (j JSONB) MarshalJSON() ([]byte, error) { | ||
| return json.RawMessage(j).MarshalJSON() | ||
| } | ||
|
|
||
| // UnmarshalJSON to deserialize []byte | ||
| func (j *JSONB) UnmarshalJSON(b []byte) error { | ||
| result := json.RawMessage{} | ||
| err := result.UnmarshalJSON(b) | ||
| *j = JSONB(result) | ||
| return err | ||
| } | ||
|
|
||
| func (j JSONB) String() string { | ||
| return string(j) | ||
| } | ||
|
|
||
| // GormDataType gorm common data type | ||
| func (JSONB) GormDataType() string { | ||
| return "json" | ||
| } | ||
|
|
||
| // GormDBDataType gorm db data type | ||
| func (JSONB) GormDBDataType(db *gorm.DB, field *schema.Field) string { | ||
| return "JSONB" | ||
| } | ||
|
|
||
| // GormValue gorm db actual value | ||
| // nolint | ||
| func (js JSONB) GormValue(ctx context.Context, db *gorm.DB) clause.Expr { | ||
| if len(js) == 0 { | ||
| return gorm.Expr("NULL") | ||
| } | ||
|
|
||
| data, _ := js.MarshalJSON() | ||
| return gorm.Expr("?", string(data)) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package v_0010 | ||
|
|
||
| import ( | ||
| "gorm.io/gorm" | ||
| ) | ||
|
|
||
| const Version = "10d125c68d9a" | ||
|
|
||
| func Migrate(db *gorm.DB) error { | ||
| return db.Transaction(func(tx *gorm.DB) error { | ||
| if err := tx.AutoMigrate(&Context{}); err != nil { | ||
| return err | ||
| } | ||
| return tx.Model(&SchemaVersion{}). | ||
| Where("1 = 1"). | ||
| Update("Version", Version). | ||
| Error | ||
| }) | ||
| } |
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