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e369a547bd
Adds a CI check and Makefile target to keep opted-in directories'
README.md files in sync with their package godoc. For now tsnet (and
its sub-packages under tsnet/example) is the only opted-in tree. The
list of directories lives in misc/genreadme/genreadme.go as
defaultRoots, so CI and humans both just run `make genreadme` with no
arguments.
The genreadme workflow runs `make genreadme` and fails if any
README.md is out of date, pointing the user at the same command.
Along the way:
- tempfork/pkgdoc now emits Markdown instead of plain text: headings
become level-2 with no {#hdr-...} anchors, and [Symbol] doc links
resolve to pkg.go.dev URLs, including for symbols in the current
package (which the default Printer would otherwise emit as bare
#Name fragments with no backing anchor in a README). Parsing no
longer uses parser.ImportsOnly, so doc.Package knows the package's
symbols and can resolve [Symbol] links at all.
- genreadme also emits a pkg.go.dev Go Reference badge at the top of
a library package's README; suppressed for package main.
- tsnet/tsnet.go's package godoc is expanded in idiomatic godoc
syntax — [Type], [Type.Method], reference-style [link]: URL
definitions — rather than Markdown-flavored [text](url) or
backtick-quoted identifiers, so that both pkg.go.dev and the
generated README.md render cleanly from a single source.
Fixes #19431
Fixes #19483
Fixes #19470
Change-Id: Iade21dc87921ab2bbb65951e5fb373b597fed29e
Signed-off-by: Walter Poupore <walterp@tailscale.com>
82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
// Copyright (c) Tailscale Inc & contributors
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// SPDX-License-Identifier: BSD-3-Clause
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// The tsnet-services example demonstrates how to use tsnet with Services.
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//
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// To run this example yourself:
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//
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// 1. Add access controls which (i) define a new ACL tag, (ii) allow the demo
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// node to host the Service, and (iii) allow peers on the tailnet to reach
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// the Service. A sample ACL policy is provided below.
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// 2. [Generate an auth key] using the Tailscale admin panel. When doing so, add
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// your new tag to your key (Service hosts must be tagged nodes).
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// 3. [Define a Service]. For the purposes of this demo, it must be defined to
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// listen on TCP port 443. Note that you only need to follow Step 1 in the
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// linked document.
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// 4. Run the demo on the command line (step 4 command shown below).
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//
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// Command for step 4:
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//
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// TS_AUTHKEY=<yourkey> go run tsnet-services.go -service <service-name>
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//
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// The following is a sample ACL policy for step 1:
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//
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// "tagOwners": {
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// "tag:tsnet-demo-host": ["autogroup:member"],
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// },
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// "autoApprovers": {
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// "services": {
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// "svc:tsnet-demo": ["tag:tsnet-demo-host"],
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// },
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// },
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// "grants": [
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// "src": ["*"],
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// "dst": ["svc:tsnet-demo"],
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// "ip": ["*"],
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// ],
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//
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// [Define a Service]: https://tailscale.com/kb/1552/tailscale-services#step-1-define-a-tailscale-service
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// [Generate an auth key]: https://tailscale.com/kb/1085/auth-keys#generate-an-auth-key
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package main
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import (
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"flag"
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"fmt"
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"log"
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"net/http"
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"tailscale.com/tsnet"
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)
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var (
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svcName = flag.String("service", "", "the name of your Service, e.g. svc:tsnet-demo")
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)
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func main() {
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flag.Parse()
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if *svcName == "" {
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log.Fatal("a Service name must be provided")
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}
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s := &tsnet.Server{
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Hostname: "tsnet-services-demo",
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}
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defer s.Close()
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ln, err := s.ListenService(*svcName, tsnet.ServiceModeHTTP{
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HTTPS: true,
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Port: 443,
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})
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if err != nil {
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log.Fatal(err)
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}
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defer ln.Close()
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log.Printf("Listening on https://%v\n", ln.FQDN)
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err = http.Serve(ln, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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fmt.Fprintln(w, "<html><body><h1>Hello, tailnet!</h1>")
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}))
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log.Fatal(err)
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}
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