cmd/construct: add HTTP test server

This commit is contained in:
Cadey Ratio 2018-01-21 23:55:59 -08:00
parent 5c8881fc18
commit 5e4f1618a4
4 changed files with 81 additions and 2 deletions

2
Gopkg.lock generated
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@ -11,7 +11,7 @@
branch = "master"
name = "github.com/Xe/eclier"
packages = ["."]
revision = "f56dc59db6b1cf87ae6bbaaf6aa985a285da33a1"
revision = "3cde6c5f47044f4875c4b7fe6b12e4e6000608ea"
[[projects]]
branch = "master"

69
cmd/construct/builtin.go Normal file
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@ -0,0 +1,69 @@
package main
import (
"context"
"flag"
"fmt"
"log"
"net/http"
"os"
"runtime"
"github.com/kr/pretty"
"go.uber.org/atomic"
)
var (
hits *atomic.Int64
)
func init() {
hits = atomic.NewInt64(0)
}
func demoServerHandler(msg string) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintln(w, "Route is go!")
fmt.Fprintf(w, "%s\n", pretty.Sprintf("%s", r.Header))
hn, _ := os.Hostname()
fmt.Fprintf(w, "message: %s\n", msg)
fmt.Fprintf(w, "Served by %s running %s\n", hn, runtime.GOOS)
fmt.Fprintf(w, "Hit count: %d", hits.Inc())
ip := r.Header.Get("X-Remote-Ip")
if ip != "" {
log.Printf("Hit from %s: %s", ip, r.RequestURI)
}
})
}
func demoServer(ctx context.Context, args []string) error {
fs := flag.NewFlagSet("server", flag.ContinueOnError)
addr := fs.String("addr", ":9090", "http address to listen on")
msg := fs.String("msg", "now here's a little lesson in trickery...", "custom message to add to each page render")
err := fs.Parse(args)
if err != nil {
return err
}
hs := &http.Server{
Addr: *addr,
Handler: demoServerHandler(*msg),
}
go hs.ListenAndServe()
log.Printf("listening on %s", *addr)
for {
select {
case <-ctx.Done():
sctx := context.Background()
hs.Shutdown(sctx)
return nil
}
}
}

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@ -98,6 +98,8 @@ func main() {
log.Fatal(err)
}
r.AddCommand(eclier.NewBuiltinCommand("server", "spawns a http server for testing", "[-addr host:port|-msg \"some message\"]", demoServer))
r.Run(ctx, flag.Args())
}

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@ -68,7 +68,7 @@ func NewRouter(opts ...RouterOption) (*Router, error) {
}
}
var helpCommand Command = NewBuiltinCommand("help", "shows help for subcommands", "[subcommand]", func(ctx context.Context, arg []string) error {
var helpCommand Command = NewBuiltinCommand("help", "shows help for subcommands", "help [subcommand]", func(ctx context.Context, arg []string) error {
if len(arg) == 0 {
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"Verb", "Author", "Version", "Help"})
@ -97,6 +97,14 @@ func NewRouter(opts ...RouterOption) (*Router, error) {
return r, nil
}
// AddCommand adds a given command instance to the eclier router.
func (r *Router) AddCommand(cmd Command) {
r.lock.Lock()
defer r.lock.Unlock()
r.cmds[cmd.Verb()] = cmd
}
// Run executes a single command given in slot 0 of the argument array.
func (r *Router) Run(ctx context.Context, arg []string) error {
r.lock.Lock()