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https://github.com/opentofu/opentofu.git
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158a90b25b
* Grafana provider * grafana_data_source resource. Allows data sources to be created in Grafana. Supports all data source types that are accepted in the current version of Grafana, and will support any future ones that fit into the existing structure. * Vendoring of apparentlymart/go-grafana-api This is in anticipation of adding a Grafana provider plugin. * grafana_dashboard resource * Website documentation for the Grafana provider.
164 lines
4.3 KiB
Go
164 lines
4.3 KiB
Go
// Copyright 2013 Martini Authors
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// Copyright 2014 Unknwon
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// 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, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package macaron
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"log"
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"net/http"
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"runtime"
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"github.com/Unknwon/macaron/inject"
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)
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const (
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panicHtml = `<html>
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<head><title>PANIC: %s</title>
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<meta charset="utf-8" />
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<style type="text/css">
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html, body {
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font-family: "Roboto", sans-serif;
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color: #333333;
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background-color: #ea5343;
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margin: 0px;
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}
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h1 {
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color: #d04526;
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background-color: #ffffff;
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padding: 20px;
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border-bottom: 1px dashed #2b3848;
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}
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pre {
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margin: 20px;
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padding: 20px;
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border: 2px solid #2b3848;
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background-color: #ffffff;
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white-space: pre-wrap; /* css-3 */
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white-space: -moz-pre-wrap; /* Mozilla, since 1999 */
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white-space: -pre-wrap; /* Opera 4-6 */
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white-space: -o-pre-wrap; /* Opera 7 */
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word-wrap: break-word; /* Internet Explorer 5.5+ */
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}
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</style>
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</head><body>
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<h1>PANIC</h1>
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<pre style="font-weight: bold;">%s</pre>
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<pre>%s</pre>
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</body>
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</html>`
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)
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var (
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dunno = []byte("???")
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centerDot = []byte("·")
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dot = []byte(".")
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slash = []byte("/")
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)
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// stack returns a nicely formated stack frame, skipping skip frames
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func stack(skip int) []byte {
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buf := new(bytes.Buffer) // the returned data
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// As we loop, we open files and read them. These variables record the currently
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// loaded file.
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var lines [][]byte
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var lastFile string
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for i := skip; ; i++ { // Skip the expected number of frames
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pc, file, line, ok := runtime.Caller(i)
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if !ok {
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break
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}
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// Print this much at least. If we can't find the source, it won't show.
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fmt.Fprintf(buf, "%s:%d (0x%x)\n", file, line, pc)
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if file != lastFile {
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data, err := ioutil.ReadFile(file)
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if err != nil {
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continue
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}
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lines = bytes.Split(data, []byte{'\n'})
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lastFile = file
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}
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fmt.Fprintf(buf, "\t%s: %s\n", function(pc), source(lines, line))
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}
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return buf.Bytes()
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}
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// source returns a space-trimmed slice of the n'th line.
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func source(lines [][]byte, n int) []byte {
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n-- // in stack trace, lines are 1-indexed but our array is 0-indexed
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if n < 0 || n >= len(lines) {
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return dunno
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}
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return bytes.TrimSpace(lines[n])
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}
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// function returns, if possible, the name of the function containing the PC.
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func function(pc uintptr) []byte {
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fn := runtime.FuncForPC(pc)
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if fn == nil {
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return dunno
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}
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name := []byte(fn.Name())
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// The name includes the path name to the package, which is unnecessary
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// since the file name is already included. Plus, it has center dots.
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// That is, we see
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// runtime/debug.*T·ptrmethod
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// and want
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// *T.ptrmethod
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// Also the package path might contains dot (e.g. code.google.com/...),
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// so first eliminate the path prefix
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if lastslash := bytes.LastIndex(name, slash); lastslash >= 0 {
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name = name[lastslash+1:]
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}
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if period := bytes.Index(name, dot); period >= 0 {
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name = name[period+1:]
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}
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name = bytes.Replace(name, centerDot, dot, -1)
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return name
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}
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// Recovery returns a middleware that recovers from any panics and writes a 500 if there was one.
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// While Martini is in development mode, Recovery will also output the panic as HTML.
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func Recovery() Handler {
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return func(c *Context, log *log.Logger) {
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defer func() {
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if err := recover(); err != nil {
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stack := stack(3)
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log.Printf("PANIC: %s\n%s", err, stack)
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// Lookup the current responsewriter
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val := c.GetVal(inject.InterfaceOf((*http.ResponseWriter)(nil)))
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res := val.Interface().(http.ResponseWriter)
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// respond with panic message while in development mode
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var body []byte
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if Env == DEV {
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res.Header().Set("Content-Type", "text/html")
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body = []byte(fmt.Sprintf(panicHtml, err, err, stack))
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}
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res.WriteHeader(http.StatusInternalServerError)
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if nil != body {
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res.Write(body)
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}
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}
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}()
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c.Next()
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}
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}
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