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feat: add now function #456

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feat: add now function #456

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18 changes: 18 additions & 0 deletions internal/primitive/transform/action/datetime/now.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,18 @@
package datetime

import (
"github.com/linkall-labs/vanus/internal/primitive/transform/action"
"github.com/linkall-labs/vanus/internal/primitive/transform/arg"
"github.com/linkall-labs/vanus/internal/primitive/transform/function"
)

func now() action.Action {
a := &action.SourceTargetSameAction{}
a.CommonAction = action.CommonAction{
ActionName: "NOW",
FixedArgs: []arg.TypeList{arg.EventList, arg.All},
VariadicArg: arg.All,
Fn: function.NowFunction,
}
return a
}
21 changes: 21 additions & 0 deletions internal/primitive/transform/function/datatime_functions.go
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Original file line number Diff line number Diff line change
Expand Up @@ -60,3 +60,24 @@ var UnixTimeFormatFunction = function{
return t.In(loc).Format(format), nil
},
}

var NowFunction = function{
name: "NOW",
fixedArgs: []common.Type{common.String, common.String},
variadicArgs: common.TypePtr(common.String),
fn: func(args []interface{}) (interface{}, error) {
t, err := time.ParseInLocation(time.RFC3339, args[0].(string), time.UTC)
if err != nil {
return nil, err
}
loc := time.UTC
if len(args) > 2 && args[2].(string) != "" {
loc, err = time.LoadLocation(args[2].(string))
if err != nil {
return nil, err
}
}
format := util.ConvertFormat2Go(args[1].(string))
return t.In(loc).Format(format), nil
},
}