mirror of
https://gitee.com/rainbond/Rainbond.git
synced 2024-12-03 12:18:09 +08:00
95 lines
3.0 KiB
Go
95 lines
3.0 KiB
Go
// RAINBOND, Application Management Platform
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// Copyright (C) 2021-2024 Goodrain Co., Ltd.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package interceptors
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import (
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"encoding/json"
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"fmt"
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"github.com/goodrain/rainbond/pkg/component/etcd"
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"github.com/goodrain/rainbond/pkg/component/grpc"
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"github.com/goodrain/rainbond/pkg/component/hubregistry"
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"github.com/goodrain/rainbond/pkg/component/mq"
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"github.com/goodrain/rainbond/pkg/component/prom"
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"net/http"
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"strings"
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)
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// Recoverer -
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func Recoverer(next http.Handler) http.Handler {
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fn := func(w http.ResponseWriter, r *http.Request) {
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defer func() {
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if rvr := recover(); rvr != nil && rvr != http.ErrAbortHandler {
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handleServiceUnavailable(w, r)
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}
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}()
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next.ServeHTTP(w, r)
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}
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return http.HandlerFunc(fn)
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}
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// isNilPointerException Check if the panic is a nil pointer exception
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func isNilPointerException(p interface{}) bool {
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if p == nil {
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return false
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}
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errMsg := fmt.Sprintf("%v", p)
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return strings.Contains(errMsg, "runtime error: invalid memory address or nil pointer dereference") || strings.Contains(errMsg, "runtime error: slice bounds out of range")
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}
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// handleServiceUnavailable -
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func handleServiceUnavailable(w http.ResponseWriter, r *http.Request) {
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// Additional information about why etcd service is not available
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errorMessage := "部分服务不可用"
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if etcd.Default().EtcdClient == nil {
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errorMessage = "Etcd 服务不可用"
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} else if grpc.Default().StatusClient == nil {
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errorMessage = "worker 服务不可用"
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} else if hubregistry.Default().RegistryCli == nil {
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errorMessage = "私有镜像仓库 服务不可用"
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} else if mq.Default().MqClient == nil {
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errorMessage = "mq 服务不可用"
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} else if prom.Default().PrometheusCli == nil {
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errorMessage = "monitor 服务不可用"
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}
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// Create a response JSON
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response := map[string]interface{}{
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"error": errorMessage,
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}
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// Convert the response to JSON
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responseJSON, err := json.Marshal(response)
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if err != nil {
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// Handle JSON marshaling error
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http.Error(w, "Internal Server Error", http.StatusInternalServerError)
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return
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}
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// Set appropriate headers
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusServiceUnavailable)
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// Write the JSON response to the client
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_, _ = w.Write(responseJSON)
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}
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