log.tmpl

{{/*
Этот шаблон предназначен только для первичной генерации LoggingMiddleware,
поскольку он не может учесть все сигнатуры логгируемых методов. После генерации
необходимо внести правки в код в местах, помеченных 'TODO'

Сгенерировать middleware:
```shell
gowrap gen -p git.perx.ru/perxis/perxis-go/<package_name> -i <interface> -t ../../../assets/templates/middleware/logging.tmpl -o info_logging_middleware.go -g
```
 */}}

import (
    "fmt"
    "time"
    "context"

    logzap "git.perx.ru/perxis/perxis-go/zap"
    "go.uber.org/zap"
    "go.uber.org/zap/zapcore"
)

{{ $funcName := (or .Vars.FuncName ("LoggingMiddleware")) }}
{{ $decorator := (or .Vars.DecoratorName ("loggingMiddleware")) }}
{{ $packageName := (split "." .Interface.Type)._0 }}
{{ $serviceName := (split "." .Interface.Type)._1 }}
{{ $objectName := (trimSuffix "s" (split "." .Interface.Type)._1) }}
{{ $writeMethods :=  list "Archive" "Create" "Delete" "Publish" "Unarchive" "Undelete" "Unpublish" "Update" "SetSchema" "Migrate" }}

type {{ $decorator }} struct {
    logger *zap.Logger
    next {{ .Interface.Type }}
}

func {{ $funcName }} (logger *zap.Logger) Middleware {
    return func(next {{ .Interface.Type }}) {{ .Interface.Type }} {
        return &{{ $decorator }}{
            next: next,
            logger: logger.With(logzap.Component("{{ (lower $serviceName ) }}")),
        }
    }
}

{{ range $method := .Interface.Methods }}
func (m *{{ $decorator }}) {{ $method.Declaration }} {
    logger := m.logger.With(
        {{- if $method.AcceptsContext }}
        logzap.CallerFromContext(ctx),
        {{ end -}}
        {{- if has $method.Name $writeMethods -}}
        logzap.Event({{ $packageName }}.Event{{ $objectName }}{{ $method.Name }}),
        logzap.Object(TODO),
        {{ end -}}
    )

    {{ $method.ResultsNames }} = m.next.{{ $method.Call }}

    {{- if $method.ReturnsError }}
    if err != nil {
        logger.Error("Failed to {{ (lower $method.Name) }}", zap.Error(err)
            {{- if has $method.Name $writeMethods -}}
            , logzap.Channels(logzap.Userlog, logzap.Syslog)
            {{- end -}})
        return
    }
    {{ end }}

    {{ if has $method.Name $writeMethods }}
    logger.Info("Successfully {{ (lower (trimSuffix "e" $method.Name)) }}ed",  logzap.Channels(logzap.Userlog))
    {{ end -}}

    return {{ $method.ResultsNames }}
}
{{ end }}