Move generated assets into separate folder inside the public folder (#1930)

* add build-time ENV to explicitly enable Open Telemetry

* generate svg-sprite before next build

* move envs.js to assets folder

* move favicon bundle to assets folder

* move external configs to configs folder

* fix envs validator

.gitignore

@@ -12,8 +12,8 @@
 # next.js
 /.next/
 /out/
-/public/assets/
-/public/envs.js
+/public/assets/envs.js
+/public/assets/configs
 /public/icons/sprite.svg
 /public/icons/README.md
 /analyze

Dockerfile

@@ -34,11 +34,13 @@ RUN yarn --frozen-lockfile
 FROM node:20.11.0-alpine AS builder
 RUN apk add --no-cache --upgrade libc6-compat bash
 
-# pass commit sha and git tag to the app image
+# pass build args to env variables
 ARG GIT_COMMIT_SHA
 ENV NEXT_PUBLIC_GIT_COMMIT_SHA=$GIT_COMMIT_SHA
 ARG GIT_TAG
 ENV NEXT_PUBLIC_GIT_TAG=$GIT_TAG
+ARG NEXT_OPEN_TELEMETRY_ENABLED
+ENV NEXT_OPEN_TELEMETRY_ENABLED=$NEXT_OPEN_TELEMETRY_ENABLED
 
 ENV NODE_ENV production
 
@@ -58,8 +60,8 @@ RUN ./collect_envs.sh ./docs/ENVS.md
 # ENV NEXT_TELEMETRY_DISABLED 1
 
 # Build app for production
-RUN yarn build
 RUN yarn svg:build-sprite
+RUN yarn build
 
 
 ### FEATURE REPORTER

configs/app/utils.ts

@@ -41,7 +41,7 @@ export const buildExternalAssetFilePath = (name: string, value: string) => {
     const fileName = name.replace(/^NEXT_PUBLIC_/, '').replace(/_URL$/, '').toLowerCase();
     const url = new URL(value);
     const fileExtension = url.pathname.match(regexp.FILE_EXTENSION)?.[1];
-    return `/assets/${ fileName }.${ fileExtension }`;
+    return `/assets/configs/${ fileName }.${ fileExtension }`;
   } catch (error) {
     return;
   }

deploy/scripts/entrypoint.sh

@@ -36,7 +36,7 @@ export_envs_from_preset() {
 export_envs_from_preset
 
 # Download external assets
-./download_assets.sh ./public/assets
+./download_assets.sh ./public/assets/configs
 
 # Check run-time ENVs values
 ./validate_envs.sh

deploy/scripts/favicon_generator.sh

@@ -10,7 +10,7 @@ if [ $? -ne 0 ]; then
     exit 1
 else
     cd ../../../
-    favicon_folder="./public/favicon/"
+    favicon_folder="./public/assets/favicon/"
 
     echo "⏳ Replacing default favicons with freshly generated pack..."
     if [ -d "$favicon_folder" ]; then

deploy/scripts/make_envs_script.sh

@@ -3,7 +3,7 @@
 echo "🌀 Creating client script with ENV values..."
 
 # Define the output file name
-output_file="${1:-./public/envs.js}"
+output_file="${1:-./public/assets/envs.js}"
 
 touch $output_file;
 truncate -s 0 $output_file;

deploy/tools/envs-validator/test.sh

@@ -9,7 +9,7 @@ export NEXT_PUBLIC_GIT_TAG=$(git describe --tags --abbrev=0)
 ../../scripts/collect_envs.sh ../../../docs/ENVS.md
 
 # Copy test assets
-mkdir -p "./public/assets"
+mkdir -p "./public/assets/configs"
 cp -r ${test_folder}/assets ./public/
 
 # Build validator script

docs/ENVS.md

@@ -661,11 +661,11 @@ The feature enables the Validators page which provides detailed information abou
 
 ### OpenTelemetry
 
-OpenTelemetry SDK for Node.js app could be enabled by passing `OTEL_SDK_ENABLED=true` variable. Configure the OpenTelemetry Protocol Exporter by using the generic environment variables described in the [OT docs](https://opentelemetry.io/docs/specs/otel/protocol/exporter/#configuration-options).
+OpenTelemetry SDK for Node.js app could be enabled by passing `OTEL_SDK_ENABLED=true` variable. Configure the OpenTelemetry Protocol Exporter by using the generic environment variables described in the [OT docs](https://opentelemetry.io/docs/specs/otel/protocol/exporter/#configuration-options). Note that this Next.js feature is currently experimental. The Docker image should be built with the `NEXT_OPEN_TELEMETRY_ENABLED=true` argument to enable it.
 
 | Variable | Type| Description | Compulsoriness  | Default value | Example value |
 | --- | --- | --- | --- | --- | --- |
-| OTEL_SDK_ENABLED | `boolean` | Flag to enable the feature | Required | `false` | `true` |
+| OTEL_SDK_ENABLED | `boolean` | Run-time flag to enable the feature | Required | `false` | `true` |
 
  
 

instrumentation.node.ts

@@ -46,9 +46,7 @@ const sdk = new NodeSDK({
               url.pathname.startsWith('/_next/static/') ||
               url.pathname.startsWith('/_next/data/') ||
               url.pathname.startsWith('/assets/') ||
-              url.pathname.startsWith('/static/') ||
-              url.pathname.startsWith('/favicon/') ||
-              url.pathname.startsWith('/envs.js')
+              url.pathname.startsWith('/static/')
             ) {
               return true;
             }

next.config.js

@@ -46,7 +46,7 @@ const moduleExports = {
   output: 'standalone',
   productionBrowserSourceMaps: true,
   experimental: {
-    instrumentationHook: true,
+    instrumentationHook: process.env.NEXT_OPEN_TELEMETRY_ENABLED === 'true',
     turbo: {
       rules: {
         '*.svg': {

pages/_document.tsx

@@ -44,14 +44,14 @@ class MyDocument extends Document {
           />
 
           { /* eslint-disable-next-line @next/next/no-sync-scripts */ }
-          <script src="/envs.js"/>
+          <script src="/assets/envs.js"/>
 
           { /* FAVICON */ }
-          <link rel="icon" href="/favicon/favicon.ico" sizes="48x48"/>
-          <link rel="icon" sizes="32x32" type="image/png" href="/favicon/favicon-32x32.png"/>
-          <link rel="icon" sizes="16x16" type="image/png"href="/favicon/favicon-16x16.png"/>
-          <link rel="apple-touch-icon" href="/favicon/apple-touch-icon-180x180.png"/>
-          <link rel="mask-icon" href="/favicon/safari-pinned-tab.svg"/>
+          <link rel="icon" href="/assets/favicon/favicon.ico" sizes="48x48"/>
+          <link rel="icon" sizes="32x32" type="image/png" href="/assets/favicon/favicon-32x32.png"/>
+          <link rel="icon" sizes="16x16" type="image/png"href="/assets/favicon/favicon-16x16.png"/>
+          <link rel="apple-touch-icon" href="/assets/favicon/apple-touch-icon-180x180.png"/>
+          <link rel="mask-icon" href="/assets/favicon/safari-pinned-tab.svg"/>
 
           <link rel="preload" as="image" href={ svgSprite.href }/>
         </Head>

public/README.md

+**Directories**
+- `/icons` - Folder for SVG-sprite assets, generated at build time.
+- `/static` - Folder for static assets that are consistent between app re-runs but may differ from one build version to another.
+- `/assets` - Folder for dynamically generated assets during the app start, such as the favicon bundle, ENV variables file, and external app configurations.
\ No newline at end of file

public/favicon/safari-pinned-tab.svg → public/assets/favicon/safari-pinned-tab.svg

 <svg version="1.0" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 180 180">
-  <path d="M34.9 2.9c-2.9 2.9-2.9 3-2.9 15 0 6.8-.5 13.1-1.1 14.5-1.9 4-6.6 5.6-16.6 5.6C4.7 38 1.7 39.4.5 44.3.2 45.5.1 75.4.2 110.7l.3 64.2 2.3 2.3c2.1 2.1 3.3 2.3 14.6 2.6 14.8.4 17.9-.6 19.5-6.6.7-2.4 1.1-26.2 1.1-66.9V43.1l2.4-2.8c2.3-2.7 2.9-2.8 13.6-3.3 15-.7 15-.6 15-18.2v-13l-2.9-2.9C63.2 0 63.2 0 50.5 0S37.8 0 34.9 2.9zM111.8 1.5c-3.9 2.2-5.1 7.8-4.6 20.4.5 9.8.6 10.6 3.2 12.8 2.3 2 3.8 2.3 10.5 2.3 4.3 0 9.2.5 11 1.1 6.3 2.2 6.1.3 6.1 71.4v64.7l2.9 2.9c2.9 2.9 3 2.9 15.4 2.9 12 0 12.7-.1 15.6-2.6l3.1-2.6V42.9l-2.5-2.4c-2.2-2.2-3.2-2.5-10.5-2.5-8.1 0-14-1.6-15.6-4.1-.5-.8-1.1-7.6-1.4-15.1C144.3.3 144.6.6 127.2.2c-9.8-.1-13.3.1-15.4 1.3zM72.3 74.4l-2.8 2.4-.3 30.6-.3 30.5 3 3.3 2.9 3.3h13.1c12.9 0 13.1 0 15.8-2.8l2.8-2.7V76.8l-2.8-2.4C101 72.1 100.2 72 88 72s-13 .1-15.7 2.4z"/>
+  <path d="M34.9 2.9c-2.9 2.9-2.9 3-2.9 15 0 6.8-.5 13.1-1.1 14.5-1.9 4-6.6 5.6-16.6 5.6C4.7 38 1.7 39.4.5 44.3.2 45.5.1 75.4.2 110.7l.3 64.2 2.3 2.3c2.1 2.1 3.3 2.3 14.6 2.6 14.8.4 17.9-.6 19.5-6.6.7-2.4 1.1-26.2 1.1-66.9V43.1l2.4-2.8c2.3-2.7 2.9-2.8 13.6-3.3 15-.7 15-.6 15-18.2v-13l-2.9-2.9C63.2 0 63.2 0 50.5 0S37.8 0 34.9 2.9zm76.9-1.4c-3.9 2.2-5.1 7.8-4.6 20.4.5 9.8.6 10.6 3.2 12.8 2.3 2 3.8 2.3 10.5 2.3 4.3 0 9.2.5 11 1.1 6.3 2.2 6.1.3 6.1 71.4v64.7l2.9 2.9c2.9 2.9 3 2.9 15.4 2.9 12 0 12.7-.1 15.6-2.6l3.1-2.6V42.9l-2.5-2.4c-2.2-2.2-3.2-2.5-10.5-2.5-8.1 0-14-1.6-15.6-4.1-.5-.8-1.1-7.6-1.4-15.1C144.3.3 144.6.6 127.2.2c-9.8-.1-13.3.1-15.4 1.3zM72.3 74.4l-2.8 2.4-.3 30.6-.3 30.5 3 3.3 2.9 3.3h13.1c12.9 0 13.1 0 15.8-2.8l2.8-2.7V76.8l-2.8-2.4C101 72.1 100.2 72 88 72s-13 .1-15.7 2.4z"/>
 </svg>

tools/scripts/dev.preset.sh

@@ -17,7 +17,7 @@ fi
 # download assets for the running instance
 dotenv \
   -e $config_file \
-  -- bash -c './deploy/scripts/download_assets.sh ./public/assets'
+  -- bash -c './deploy/scripts/download_assets.sh ./public/assets/configs'
 
 yarn svg:build-sprite
 echo ""

tools/scripts/dev.sh

@@ -6,7 +6,7 @@ dotenv \
   -e .env.local \
   -e .env.development \
   -e .env \
-  -- bash -c './deploy/scripts/download_assets.sh ./public/assets'
+  -- bash -c './deploy/scripts/download_assets.sh ./public/assets/configs'
 
 yarn svg:build-sprite
 echo ""

tools/scripts/favicon-generator.dev.sh

 secrets_file="./configs/envs/.env.secrets"
-favicon_folder="./public/favicon/"
+favicon_folder="./public/assets/favicon/"
 master_url="https://raw.githubusercontent.com/blockscout/frontend/main/tools/scripts/favicon.svg"
 
 if [ ! -f "$secrets_file" ]; then