Files
mostlymatter/store/layer_generators/opentracing_layer.go.tmpl
Agniva De Sarker 94d09e1336 Fix return nil (#15330)
* Fix return nil

A nil error is an interface having nil value but a non-nil type.
This leads to unexpected errors in the code well-documented here:
https://golang.org/doc/faq#nil_error

We fix this by passing an additional parameter to handle it.

Caught using https://github.com/dgryski/semgrep-go

* Bring back auto-generated line
2020-08-24 11:16:35 +05:30

84 строки
2.7 KiB
Cheetah

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.
// Code generated by "make store-layers"
// DO NOT EDIT
package opentracinglayer
import (
"context"
"github.com/mattermost/mattermost-server/v5/model"
"github.com/mattermost/mattermost-server/v5/services/tracing"
"github.com/mattermost/mattermost-server/v5/store"
"github.com/opentracing/opentracing-go/ext"
spanlog "github.com/opentracing/opentracing-go/log"
)
type {{.Name}} struct {
store.Store
{{range $index, $element := .SubStores}} {{$index}}Store store.{{$index}}Store
{{end}}
}
{{range $index, $element := .SubStores}}func (s *{{$.Name}}) {{$index}}() store.{{$index}}Store {
return s.{{$index}}Store
}
{{end}}
{{range $index, $element := .SubStores}}type {{$.Name}}{{$index}}Store struct {
store.{{$index}}Store
Root *{{$.Name}}
}
{{end}}
{{range $substoreName, $substore := .SubStores}}
{{range $index, $element := $substore.Methods}}
func (s *{{$.Name}}{{$substoreName}}Store) {{$index}}({{$element.Params | joinParamsWithType}}) {{$element.Results | joinResultsForSignature}} {
origCtx := s.Root.Store.Context()
span, newCtx := tracing.StartSpanWithParentByContext(s.Root.Store.Context(), "{{$substoreName}}Store.{{$index}}")
s.Root.Store.SetContext(newCtx)
defer func(){
s.Root.Store.SetContext(origCtx)
}()
{{range $paramName, $param := $element.Params}}
{{if index $element.ParamsToTrace $param.Name }}
span.SetTag("{{$param.Name}}", {{$param.Name}})
{{end}}
{{end}}
defer span.Finish()
{{- if $element.Results | len | eq 0}}
s.{{$substoreName}}Store.{{$index}}({{$element.Params | joinParams}})
{{else}}
{{genResultsVars $element.Results false }} := s.{{$substoreName}}Store.{{$index}}({{$element.Params | joinParams}})
{{- if $element.Results | errorPresent }}
if {{$element.Results | errorVar}} != nil {
span.LogFields(spanlog.Error({{$element.Results | errorVar}}))
ext.Error.Set(span, true)
}
{{end}}
return {{ genResultsVars $element.Results false -}}
{{end}}
}
{{end}}
{{end}}
{{range $index, $element := .Methods}}
func (s *{{$.Name}}) {{$index}}({{$element.Params | joinParamsWithType}}) {{$element.Results | joinResultsForSignature}} {
{{if $element.Results | len | eq 0}}s.Store.{{$index}}({{$element.Params | joinParams}})
{{else}}return s.Store.{{$index}}({{$element.Params | joinParams}})
{{end}}}
{{end}}
func New(childStore store.Store, ctx context.Context) *{{.Name}} {
newStore := {{.Name}}{
Store: childStore,
}
{{range $substoreName, $substore := .SubStores}}
newStore.{{$substoreName}}Store = &{{$.Name}}{{$substoreName}}Store{{"{"}}{{$substoreName}}Store: childStore.{{$substoreName}}(), Root: &newStore}{{end}}
return &newStore
}