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registry.go
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registry.go
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package transforms
import (
. "github.com/qiniu/logkit/utils/models"
)
const (
TransformAt = "transform_at"
TransformTypeString = "string"
TransformTypeLong = "long"
TransformTypeFloat = "float"
TransformTypeBoolean = "bool"
TransformTypeByte = "[]byte"
)
const (
StageBeforeParser = "before_parser"
StageAfterParser = "after_parser"
)
//Transformer plugin做数据变换的接口
// 注意: transform的规则是,出错要把数据原样返回
type Transformer interface {
Description() string
SampleConfig() string
ConfigOptions() []Option
Type() string
Transform([]Data) ([]Data, error)
RawTransform([]string) ([]string, error)
Stage() string
Stats() StatsInfo
}
type ServerTansformer interface {
ServerConfig() map[string]interface{}
}
// StatsTransformer 代表了一个带有统计功能的转换器
type StatsTransformer interface {
SetStats(string) StatsInfo
}
// transformer 初始化方法接口,err 不为空表示初始化失败
type Initializer interface {
Init() error
}
type Creator func() Transformer
var Transformers = map[string]Creator{}
func Add(name string, creator Creator) {
Transformers[name] = creator
}
var (
KeyStage = Option{
KeyName: "stage",
Element: Radio,
ChooseOnly: true,
ChooseOptions: []interface{}{StageAfterParser, StageBeforeParser},
Default: StageAfterParser,
DefaultNoUse: false,
Description: "transform运行的阶段(parser前还是parser后)(stage)",
ToolTip: "transform在parser前或在parser后进行运行",
Type: TransformTypeString,
Advance: true,
}
KeyFieldName = Option{
KeyName: "key",
ChooseOnly: false,
Default: "",
Required: true,
Placeholder: "my_field_keyname",
DefaultNoUse: true,
Description: "要进行Transform变化的键(key)",
CheckRegex: CheckPatternKey,
ToolTip: "对该字段的值进行transform变换",
Type: TransformTypeString,
}
KeyFieldNew = Option{
KeyName: "new",
ChooseOnly: false,
Default: "",
Placeholder: "new_field_keyname",
DefaultNoUse: false,
Description: "新的字段名(new)",
CheckRegex: CheckPatternKey,
ToolTip: "生成的字段名称,不改变原有的字段",
Type: TransformTypeString,
}
KeyFieldNewRequired = Option{
KeyName: "new",
ChooseOnly: false,
Default: "",
Required: true,
Placeholder: "new_field_keyname",
DefaultNoUse: false,
Description: "新的字段名(new)",
CheckRegex: CheckPatternKey,
ToolTip: "生成的字段名称,不改变原有的字段",
Type: TransformTypeString,
}
KeyTimezoneoffset = Option{
KeyName: "offset",
ChooseOnly: true,
ChooseOptions: []interface{}{0, -1, -2, -3, -4,
-5, -6, -7, -8, -9, -10, -11, -12,
1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12},
Default: 0,
DefaultNoUse: false,
Description: "时区偏移量(offset)",
Advance: true,
CheckRegex: "",
Type: TransformTypeLong,
ToolTip: "如果key中带有时区信息,则以该时区作为offset的基础时区,否则以UTC时区为基础时区",
}
KeyKeepString = Option{
KeyName: "keep",
Element: Radio,
ChooseOnly: true,
Default: false,
ChooseOptions: []interface{}{false, true},
DefaultNoUse: false,
Description: "值解析为字符串,不进行转换",
Advance: true,
Type: TransformTypeBoolean,
}
KeyOverride = Option{
KeyName: "override",
Element: Radio,
ChooseOnly: true,
ChooseOptions: []interface{}{false, true},
Default: false,
DefaultNoUse: false,
Description: "要进行Transform变化的键已存在时,是否覆盖原有的值(override)",
Type: TransformTypeBoolean,
Advance: true,
}
KeyDiscardkey = Option{
KeyName: "discard_key",
Element: Radio,
ChooseOnly: true,
ChooseOptions: []interface{}{false, true},
Default: false,
DefaultNoUse: false,
Description: "删除原始key指定的字段名和字段值",
Type: TransformTypeBoolean,
Advance: true,
}
)
type TransformInfo struct {
CurData Data
Index int
}
type TransformResult struct {
Index int
CurData Data
CurDatas []Data
Err error
ErrNum int
}
type TransformResultSlice []TransformResult
func (slice TransformResultSlice) Len() int {
return len(slice)
}
func (slice TransformResultSlice) Less(i, j int) bool {
return slice[i].Index < slice[j].Index
}
func (slice TransformResultSlice) Swap(i, j int) {
slice[i], slice[j] = slice[j], slice[i]
}
type RawTransformInfo struct {
CurData string
Index int
}
type RawTransformResult struct {
Index int
CurData string
Err error
ErrNum int
}
type RawTransformResultSlice []RawTransformResult
func (slice RawTransformResultSlice) Len() int {
return len(slice)
}
func (slice RawTransformResultSlice) Less(i, j int) bool {
return slice[i].Index < slice[j].Index
}
func (slice RawTransformResultSlice) Swap(i, j int) {
slice[i], slice[j] = slice[j], slice[i]
}