install

Dockerfile

@@ -9,7 +9,7 @@ RUN cd /tmp && \
 FROM golang:1.19.1-bullseye AS builder
 COPY . /go/src/pprofweb/
 WORKDIR /go/src/pprofweb
-RUN go build -o server .
+RUN go build -o server ./webserver
 
 FROM gcr.io/distroless/base-debian11:latest AS run
 COPY --from=builder /go/src/pprofweb/server /pprofweb

cli/cli.go

@@ -0,0 +1,117 @@
+package cli
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"net/url"
+	"os"
+	"strings"
+)
+
+type Context struct {
+	context.Context
+}
+
+var CLI struct {
+	Profile Profile `cmd:"" aliases:"p,prof" help:"run a profile and upload"`
+	Upload  Upload  `cmd:"" aliases:"u,up" help:"upload a file"`
+}
+
+var httpClient = &http.Client{}
+
+type BaseArgs struct {
+	Remote *url.URL `name:"remote" help:"which remote pprofweb server to use" env:"PPROFWEB_REMOTE_URL" default:"https://pprof.tuxpa.in"`
+}
+
+type Profile struct {
+	Mode string `name:"mode" short:"m" enum:"heap,goroutine,threacreate,block,mutex,profile" help:"type of profile to run" default:"heap"`
+	Time int    `name:"time" short:"t" help:"duration of profile in seconds"`
+
+	Url *url.URL `arg:"" help:"base url of pprof server, ala http://localhost:6060/debug/pprof"`
+
+	BaseArgs
+}
+
+func (c *Profile) Run(ctx Context) error {
+	req := &http.Request{}
+	req = req.WithContext(ctx)
+
+	req.Method = "GET"
+	req.URL = c.Url
+	req.URL = req.URL.JoinPath(c.Mode)
+
+	q := req.URL.Query()
+	if c.Time > 0 {
+	}
+	req.URL.RawQuery = q.Encode()
+
+	fmt.Printf("getting profile from %s...\n", req.URL)
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	res, err := doUpload(ctx, c.BaseArgs, resp.Body)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("see profile at %s/%s/ \n", c.Remote, res)
+	return nil
+}
+
+type Upload struct {
+	File string `arg:"" help:"file to upload" type:"path"`
+	BaseArgs
+}
+
+func (c *Upload) Run(ctx Context) error {
+	fl, err := os.Open(c.File)
+	if err != nil {
+		return err
+	}
+	defer fl.Close()
+	res, err := doUpload(ctx, c.BaseArgs, fl)
+	if err != nil {
+		return err
+	}
+	fmt.Printf("see profile at %s/%s/ \n", c.Remote, res)
+
+	return nil
+}
+
+func doUpload(ctx Context, c BaseArgs, dat io.Reader) (string, error) {
+	fmt.Printf("uploading profile to %s...\n", c.Remote)
+	body := new(bytes.Buffer)
+	writer := multipart.NewWriter(body)
+	part, err := writer.CreateFormFile("file", "pprof.pb.gz")
+	if err != nil {
+		return "", err
+	}
+	_, err = io.Copy(part, dat)
+	if err != nil {
+		return "", err
+	}
+	err = writer.Close()
+	if err != nil {
+		return "", err
+	}
+	req, err := http.NewRequestWithContext(ctx, "POST", c.Remote.JoinPath("upload").String(), body)
+	if err != nil {
+		return "", err
+	}
+	req.Header.Set("content-type", writer.FormDataContentType())
+	resp, err := httpClient.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+	bts, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", err
+	}
+	return strings.ToValidUTF8(string(bts), "<22>"), nil
+}

go.mod

@@ -4,6 +4,7 @@ go 1.19
 
 require (
 	gfx.cafe/util/go/generic v0.0.0-20220921131905-10a2bde53f66
+	github.com/alecthomas/kong v0.7.1
 	github.com/go-chi/chi/v5 v5.0.7
 	github.com/google/pprof v0.0.0-20211108044417-e9b028704de0
 	github.com/rs/xid v1.4.0

go.sum

@@ -40,6 +40,10 @@ gfx.cafe/util/go/generic v0.0.0-20220921131905-10a2bde53f66 h1:t6agT2M/Kl5iOnhkO
 gfx.cafe/util/go/generic v0.0.0-20220921131905-10a2bde53f66/go.mod h1:0mgIMiX8+M1l4VHMaOqBaydZaztbFgblQAaEDOZpUhQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/alecthomas/assert/v2 v2.1.0 h1:tbredtNcQnoSd3QBhQWI7QZ3XHOVkw1Moklp2ojoH/0=
+github.com/alecthomas/kong v0.7.1 h1:azoTh0IOfwlAX3qN9sHWTxACE2oV8Bg2gAwBsMwDQY4=
+github.com/alecthomas/kong v0.7.1/go.mod h1:n1iCIO2xS46oE8ZfYCNDqdR0b0wZNrXAIAqro/2132U=
+github.com/alecthomas/repr v0.1.0 h1:ENn2e1+J3k09gyj2shc0dHr/yjaWSHRlrJ4DPMevDqE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -118,6 +122,7 @@ github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5m
 github.com/googleapis/google-cloud-go-testing v0.0.0-20200911160855-bcd43fbb19e8/go.mod h1:dvDLG8qkwmyD9a/MJJN3XJcT3xFxOKAvTZGvuZmac9g=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
+github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/ianlancetaylor/demangle v0.0.0-20210905161508-09a460cdf81d h1:uGg2frlt3IcT7kbV6LEp5ONv4vmoO2FW4qSO+my/aoM=

main.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"git.tuxpa.in/a/pprofweb/cli"
+	"github.com/alecthomas/kong"
+)
+
+func main() {
+	ctx := NewCLI()
+	sctx, cn := signal.NotifyContext(context.Background(), os.Kill, syscall.SIGTERM, syscall.SIGILL)
+	defer cn()
+	if err := ctx.Run(cli.Context{Context: sctx}); err != nil {
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
+	}
+}
+
+func NewCLI() *kong.Context {
+	ctx := kong.Parse(&cli.CLI)
+	return ctx
+}