active/core/errs/fmtr/active.go

// ------------------------------------------------------------------------
//   Project active2
//   Active Thing (activething.com) git.activething.com/go
//
//   File name  active.go
//   Created by DEV
//   Modified   09/04/2024
//
//   Copyright 2024 activething.com 
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

package fmtr

import (
	"reflect"
	"sync"
	"time"
)


const (

	CodeBuilderError      string = "build-format"
	CodeBuilderLevelError string = "builder-invalid-level"

	fmtErrorFormatUnwrap  string = "cant unwrap error type %s"
	fmtErrorTypeFormat    string = "cant build format for error type %s"


)

const (
	FieldNameError 		string = "error"
	FieldNameCode 		string = "code"
	FieldNameType  		string = "type"
	FieldNameMessage 	string = "message"
	FieldNameInfo	 	string = "info"
	FieldNameDate 		string = "date"
	FieldNameTime  	    string = "time"
	FieldNameParam      string = "param"
	FieldNameSource     string = "source"
	FieldNameUser 		string = "user"


)

var (

	g = struct {
		mux 	 	sync.RWMutex

		builders 	 map[reflect.Type]ErrorBuilder
		collectors 	 FieldCollectors
	}{

		builders	: make(map[reflect.Type]ErrorBuilder),
		collectors	: defaultCollectors(),
	}

)



func GetErrorTypeBuilder(rtype reflect.Type) ErrorBuilder {
	g.mux.RLock()
	b,_ := g.builders[rtype]
	g.mux.RUnlock()
	return b
}


func SetErrorTypeBuilder(rtype reflect.Type, errBuilder ErrorBuilder) {
	if rtype == nil {
		return
	}
	g.mux.Lock()
	if errBuilder == nil {
		delete(g.builders,rtype)
	} else {
		g.builders[rtype] = errBuilder
	}
	g.mux.Unlock()
}


func MakeErrorTypeBuilder(builder Builder, err error) ErrorBuilder {
	var eb FieldCollectors

	g.mux.RLock()
	defer g.mux.RUnlock()

	builder.Build(err, func(fb FieldBuilder){
		for _,c := range g.collectors {
			if c.CollectField(fb,err) {
				eb = append(eb,c)
			}
		}
	})
	if len(eb) == 0 {
		return BuildErrorFnc(BasicBuildError)
	}
	return eb
}



func AddCollector (collector FieldCollector) {
	if collector == nil {
		return
	}
	g.mux.Lock()
	g.collectors = append(g.collectors,collector)
	g.mux.Unlock()
}






func defaultCollectors () FieldCollectors {

	return []FieldCollector{

		CollectFieldFnc(func (b FieldBuilder, e error ) bool {
			if ms,is := e.(interface { Message() string }); is {
				b.AddFieldString(FieldNameMessage, ms.Message())
				return true
			}
			return false
		}),

		CollectFieldFnc(func (b FieldBuilder, e error ) bool {
			if in,is := e.(interface { Info () string }); is {
				b.AddFieldString(FieldNameInfo,in.Info())
				return true
			}
			return false
		}),

		CollectFieldFnc(func (b FieldBuilder, e error ) bool {
			if tm,is := e.(interface { Time() time.Time }); is {
				b.AddFieldTime(FieldNameTime, tm.Time())
				return true
			}
			return false
		}),

		CollectFieldFnc(func (b FieldBuilder, e error ) bool {
			if tm,is := e.(interface { Date() time.Time }); is {
				b.AddFieldDate(FieldNameDate, tm.Date())
				return true
			}
			return false
		}),

		CollectFieldFnc(func (b FieldBuilder, e error ) bool {
			if tm,is := e.(interface { Param() string }); is {
				b.AddFieldString(FieldNameParam, tm.Param())
				return true
			}
			return false
		}),

		CollectFieldFnc(func (b FieldBuilder, e error ) bool {
			if tm,is := e.(interface { User() string }); is {
				b.AddFieldString(FieldNameUser, tm.User())
				return true
			}
			return false
		}),

		CollectFieldFnc(func (b FieldBuilder, e error ) bool {
			if tm,is := e.(interface { Source() string }); is {
				b.AddFieldString(FieldNameSource, tm.Source())
				return true
			}
			return false
		}),

	}
}