| /* |
| Copyright 2016 The Transicator Authors |
| |
| 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 main |
| |
| import ( |
| "net/http" |
| "runtime" |
| |
| "github.com/julienschmidt/httprouter" |
| ) |
| |
| func (s *server) initDiagAPI(prefix string, router *httprouter.Router) { |
| router.HandlerFunc("GET", prefix+"/diagnostics/stack", s.handleGetStack) |
| } |
| |
| func (s *server) handleGetStack( |
| resp http.ResponseWriter, req *http.Request) { |
| stackBufLen := 64 |
| for { |
| stackBuf := make([]byte, stackBufLen) |
| stackLen := runtime.Stack(stackBuf, true) |
| if stackLen == len(stackBuf) { |
| // Must be truncated |
| stackBufLen *= 2 |
| } else { |
| resp.Header().Set("Content-Type", textContent) |
| resp.Write(stackBuf[:stackLen]) |
| return |
| } |
| } |
| } |
