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inject react-app in binary

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Signed-off-by: Augustin Husson <augustin.husson@amadeus.com>
This commit is contained in:
Augustin Husson 2023-02-28 12:54:30 +01:00
parent d450bed6f1
commit 25d1f32138
11 changed files with 153 additions and 15 deletions
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12
Makefile
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@ -26,6 +26,18 @@ STATICCHECK_IGNORE =
# Will build both the front-end as well as the back-end
build-all: assets apiv2 build
.PHONY: build
build: build-react-app assets-compress common-build
.PHONY: build-react-app
build-react-app:
cd ui/react-app && npm install && npm run build
.PHONY: assets-compress
assets-compress:
@echo '>> compressing assets'
scripts/compress_assets.sh
.PHONY: assets
assets: asset/assets_vfsdata.go

1
go.mod
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@ -30,6 +30,7 @@ require (
github.com/pkg/errors v0.9.1
github.com/prometheus/client_golang v1.14.0
github.com/prometheus/common v0.39.0
github.com/prometheus/common/assets v0.2.0
github.com/prometheus/common/sigv4 v0.1.0
github.com/prometheus/exporter-toolkit v0.8.2
github.com/rs/cors v1.8.3

2
go.sum
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@ -487,6 +487,8 @@ github.com/prometheus/common v0.26.0/go.mod h1:M7rCNAaPfAosfx8veZJCuw84e35h3Cfd9
github.com/prometheus/common v0.29.0/go.mod h1:vu+V0TpY+O6vW9J44gczi3Ap/oXXR10b+M/gUGO4Hls=
github.com/prometheus/common v0.39.0 h1:oOyhkDq05hPZKItWVBkJ6g6AtGxi+fy7F4JvUV8uhsI=
github.com/prometheus/common v0.39.0/go.mod h1:6XBZ7lYdLCbkAVhwRsWTZn+IN5AB9F/NXd5w0BbEX0Y=
github.com/prometheus/common/assets v0.2.0 h1:0P5OrzoHrYBOSM1OigWL3mY8ZvV2N4zIE/5AahrSrfM=
github.com/prometheus/common/assets v0.2.0/go.mod h1:D17UVUE12bHbim7HzwUvtqm6gwBEaDQ0F+hIGbFbccI=
github.com/prometheus/common/sigv4 v0.1.0 h1:qoVebwtwwEhS85Czm2dSROY5fTo2PAPEVdDeppTwGX4=
github.com/prometheus/common/sigv4 v0.1.0/go.mod h1:2Jkxxk9yYvCkE5G1sQT7GuEXm57JrvHu9k5YwTjsNtI=
github.com/prometheus/exporter-toolkit v0.8.2 h1:sbJAfBXQFkG6sUkbwBun8MNdzW9+wd5YfPYofbmj0YM=

37
scripts/compress_assets.sh Executable file
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@ -0,0 +1,37 @@
#!/usr/bin/env bash
#
# compress static assets
set -euo pipefail
cd ui/react-app
cp embed.go.tmpl embed.go
GZIP_OPTS="-fk"
# gzip option '-k' may not always exist in the latest gzip available on different distros.
if ! gzip -k -h &>/dev/null; then GZIP_OPTS="-f"; fi
dist="dist"
if ! [[ -d "${dist}" ]]; then
mkdir -p ${dist}
echo "<!doctype html>
<html lang=\"en\">
<head>
<meta charset=\"utf-8\">
<title>Node</title>
<base href=\"/\">
<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">
<link rel=\"icon\" type=\"image/x-icon\" href=\"favicon.ico\">
</head>
<body>
<div>
<p> This is the default index, looks like you forget to generate the react app before generating the golang endpoint.</p>
</div>
</body>
</html>" > ${dist}/index.html
fi
find dist -type f -name '*.gz' -delete
find dist -type f -exec gzip $GZIP_OPTS '{}' \; -print0 | xargs -0 -I % echo %.gz | xargs echo //go:embed >> embed.go
echo var embedFS embed.FS >> embed.go

4
ui/react-app/.gitignore vendored
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@ -1 +1,5 @@
node_modules/
dist/
embed.go

16
ui/react-app/embed.go.tmpl Normal file
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@ -0,0 +1,16 @@
// Copyright 2023 The Prometheus 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 reactApp
import "embed"

2
ui/react-app/src/Router.tsx
View File

@ -8,7 +8,7 @@ function Router() {
return (
<Suspense>
<Routes>
<Route path="/status" element={<ViewStatus />} />
<Route path="/react-app/status" element={<ViewStatus />} />
</Routes>
</Suspense>
);

4
ui/react-app/src/components/navbar.tsx
View File

@ -13,7 +13,7 @@ export default function Navbar(): JSX.Element {
<Box sx={{ display: 'flex', flexDirection: 'row' }} flexGrow={1}>
<Button
onClick={() => {
navigate('/');
navigate('/react-app');
}}
>
<Typography
@ -31,7 +31,7 @@ export default function Navbar(): JSX.Element {
<Button
variant="text"
onClick={() => {
navigate('/status');
navigate('/react-app/status');
}}
>
Status

23
ui/react-app/ui.go Normal file
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@ -0,0 +1,23 @@
// Copyright 2023 The Prometheus 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 reactApp
import (
"net/http"
"github.com/prometheus/common/assets"
)
//nolint:typecheck // Ignore undeclared embedFS, it is part of generated code.
var Assets = http.FS(assets.New(embedFS))

5
ui/react-app/webpack.prod.ts
View File

@ -15,8 +15,13 @@ import { Configuration } from 'webpack';
import { merge } from 'webpack-merge';
import { ESBuildMinifyPlugin } from 'esbuild-loader';
import { commonConfig } from './webpack.common';
import path from 'path';
const prodConfig: Configuration = {
output: {
path: path.resolve(__dirname, './dist'),
publicPath: '/react-app/',
},
mode: 'production',
bail: true,
devtool: 'source-map',

62
ui/web.go
View File

@ -15,17 +15,24 @@ package ui
import (
"fmt"
"io"
"net/http"
_ "net/http/pprof" // Comment this line to disable pprof endpoint.
"path"
"github.com/go-kit/log"
"github.com/prometheus/alertmanager/asset"
reactApp "github.com/prometheus/alertmanager/ui/react-app"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/prometheus/common/route"
"github.com/prometheus/alertmanager/asset"
"github.com/prometheus/common/server"
)
var reactRouterPaths = []string{
"/",
"/status",
}
// Register registers handlers to serve files for the web interface.
func Register(r *route.Router, reloadCh chan<- chan error, logger log.Logger) {
r.Get("/metrics", promhttp.Handler().ServeHTTP)
@ -62,7 +69,38 @@ func Register(r *route.Router, reloadCh chan<- chan error, logger log.Logger) {
fs.ServeHTTP(w, req)
})
r.Post("/-/reload", http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
serveReactApp := func(w http.ResponseWriter, r *http.Request) {
f, err := reactApp.Assets.Open("/dist/index.html")
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "Error opening React index.html: %v", err)
return
}
defer func() { _ = f.Close() }()
idx, err := io.ReadAll(f)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
fmt.Fprintf(w, "Error reading React index.html: %v", err)
return
}
w.Write(idx)
}
// Static files required by the React app.
r.Get("/react-app/*filepath", func(w http.ResponseWriter, r *http.Request) {
for _, rt := range reactRouterPaths {
if r.URL.Path != "/react-app"+rt {
continue
}
serveReactApp(w, r)
return
}
r.URL.Path = path.Join("/dist", route.Param(r.Context(), "filepath"))
fs := server.StaticFileServer(reactApp.Assets)
fs.ServeHTTP(w, r)
})
r.Post("/-/reload", func(w http.ResponseWriter, req *http.Request) {
errc := make(chan error)
defer close(errc)
@ -70,22 +108,22 @@ func Register(r *route.Router, reloadCh chan<- chan error, logger log.Logger) {
if err := <-errc; err != nil {
http.Error(w, fmt.Sprintf("failed to reload config: %s", err), http.StatusInternalServerError)
}
}))
})
r.Get("/-/healthy", http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
r.Get("/-/healthy", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, "OK")
}))
r.Head("/-/healthy", http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
})
r.Head("/-/healthy", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusOK)
}))
r.Get("/-/ready", http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
})
r.Get("/-/ready", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, "OK")
}))
r.Head("/-/ready", http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
})
r.Head("/-/ready", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(http.StatusOK)
}))
})
r.Get("/debug/*subpath", http.DefaultServeMux.ServeHTTP)
r.Post("/debug/*subpath", http.DefaultServeMux.ServeHTTP)