shanshanzhong
ef64a876cd
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添加请求追踪中间件以记录请求和响应内容 在用户订阅查询中新增includeExpired参数支持查询历史记录 完善配置系统以支持float64类型默认值解析
68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package conf
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import (
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"fmt"
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"reflect"
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)
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func setDefaults(v any) {
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// Get the element of the pointer
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val := reflect.ValueOf(v).Elem()
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setDefaultsRecursive(val)
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}
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func setDefaultsRecursive(v reflect.Value) {
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if v.Kind() != reflect.Struct {
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return
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}
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typ := v.Type()
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for i := 0; i < v.NumField(); i++ {
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field := v.Field(i)
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fieldType := typ.Field(i)
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// if the field is a struct, set recursively
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if field.Kind() == reflect.Struct {
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setDefaultsRecursive(field)
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}
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// if the field is zero value and has default tag, set the default value
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if isZero(field) {
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defaultValue := fieldType.Tag.Get("default")
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if defaultValue != "" {
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// set the value for the field using reflection
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field.Set(reflect.ValueOf(parseDefaultValue(field.Kind(), defaultValue)))
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}
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}
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}
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}
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func isZero(v reflect.Value) bool {
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return reflect.DeepEqual(v.Interface(), reflect.Zero(v.Type()).Interface())
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}
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func parseDefaultValue(kind reflect.Kind, defaultValue string) any {
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switch kind {
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case reflect.String:
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return defaultValue
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case reflect.Int:
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var i int
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_, _ = fmt.Sscanf(defaultValue, "%d", &i)
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return i
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case reflect.Int64:
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var i int64
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_, _ = fmt.Sscanf(defaultValue, "%d", &i)
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return i
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case reflect.Bool:
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var b bool
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_, _ = fmt.Sscanf(defaultValue, "%t", &b)
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return b
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case reflect.Uint32:
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var i uint32
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_, _ = fmt.Sscanf(defaultValue, "%d", &i)
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return i
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case reflect.Float64:
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var f float64
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_, _ = fmt.Sscanf(defaultValue, "%f", &f)
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return f
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default:
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fmt.Printf("类型 %v 没有处理, 值为: %v \n", kind, defaultValue)
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panic("unhandled default case")
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}
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}
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