Gustavo L de Mello (Guz)
8f3245684b
Moved the source code to a new repository outside from loreddev/x. To
see the commit history before this commit, see
1f823aa099
107 lines
2.5 KiB
Go
107 lines
2.5 KiB
Go
// Copyright 2025-present Gustavo "Guz" L. de Mello
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// Copyright 2025-present The Lored.dev Contributors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package plugins
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import (
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"errors"
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"html/template"
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"io"
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"log/slog"
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"net/http"
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"forge.capytal.company/loreddev/blogo/core"
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"forge.capytal.company/loreddev/blogo/plugin"
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"forge.capytal.company/loreddev/x/tinyssert"
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)
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const templateErrorHandlerName = "blogo-templateerrorhandler-errorhandler"
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func NewTemplateErrorHandler(
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templt template.Template,
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opts ...TemplateErrorHandlerOpts,
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) plugin.ErrorHandler {
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opt := TemplateErrorHandlerOpts{}
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if len(opts) > 0 {
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opt = opts[0]
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}
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if opt.Assertions == nil {
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opt.Assertions = tinyssert.NewDisabledAssertions()
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}
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if opt.Logger == nil {
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opt.Logger = slog.New(slog.NewTextHandler(io.Discard, &slog.HandlerOptions{}))
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}
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return &templateErrorHandler{
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templt: templt,
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assert: opt.Assertions,
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log: opt.Logger,
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}
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}
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type TemplateErrorHandlerOpts struct {
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Assertions tinyssert.Assertions
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Logger *slog.Logger
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}
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type TemplateErrorHandlerInfo struct {
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Path string
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Error error
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ErrorMsg string
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}
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type templateErrorHandler struct {
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templt template.Template
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assert tinyssert.Assertions
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log *slog.Logger
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}
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func (h *templateErrorHandler) Name() string {
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return templateErrorHandlerName
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}
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func (h *templateErrorHandler) Handle(err error) (recovr any, handled bool) {
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h.assert.NotNil(err, "Error should not be nil")
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h.assert.NotNil(h.templt, "Template should not be nil")
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h.assert.NotNil(h.log)
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log := h.log.With(slog.String("err", err.Error()))
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var serr core.ServeError
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if !errors.As(err, &serr) {
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log.Debug("Error is not a core.ServeError, ignoring error")
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return nil, false
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}
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log.Debug("Handling error")
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w, r := serr.Res, serr.Req
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w.WriteHeader(http.StatusInternalServerError)
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if err := h.templt.Execute(w, TemplateErrorHandlerInfo{
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Path: r.URL.Path,
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Error: serr.Err,
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ErrorMsg: serr.Err.Error(),
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}); err != nil {
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log.Error("Failed to execute template and respond error")
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return nil, false
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}
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return nil, true
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}
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