forked from openedx/edx-platform
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Implements the `npm run watch` section of the assets ADR [1], plus some modifications since I decided to switch from pywatchman to watchdog (see ADR changes for justification). This will replace `paver watch_assets` (edx-platform) and `openedx-assets watch-themes` (Tutor). Specifically, this PR adds three experimental commands: * `npm run watch-sass` : Watch for Sass changes with watchdog. * `npm run watch-webpack` : Invoke Webpack-watch for JS changes. * `npm run watch` : Invoke both `watch-sass` and `watch-webpack` simultaneously. These commands are only intended to work in development mode. They have been tested both on bare-metal edx-platform and through `tutor dev run` on on Linux. Before removing the "experimental" label, we need to: * Test through Devstack on Linux. * Test through Devstack and `tutor dev run` on macOS. * Test on bare-metal macOS. Might not work, which is OK, but we should document that. * Document the commands in edx-platform's README. * Confirm that this not only works through `tutor dev run`, but also as a suitable replacement in the `watchthemes` service that Tutor runs automatically as part of `tutor dev start`. Tweak if necessary. References: 1. https://github.com/openedx/edx-platform/blob/master/docs/decisions/0017-reimplement-asset-processing.rst Part of: openedx#31612 #
- Loading branch information
1 parent
3557799
commit c6bc019
Showing
5 changed files
with
179 additions
and
3 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,170 @@ | ||
| #!/usr/bin/env bash | ||
|
|
||
| # Wait for changes to Sass, and recompile. | ||
| # Invoke from repo root as `npm run watch-sass`. | ||
| # This script tries to recompile the minimal set of Sass for any given change. | ||
|
|
||
| # By default, only watches default Sass. | ||
| # To watch themes too, provide colon-separated paths in the EDX_PLATFORM_THEME_DIRS environment variable. | ||
| # Each path will be treated as a "theme dir", which means that every immediate child directory is watchable as a theme. | ||
| # For example: | ||
| # | ||
| # EDX_PLATFORM_THEME_DIRS=/openedx/themes:./themes npm run watch-sass | ||
| # | ||
| # would watch default Sass as well as /openedx/themes/indigo, /openedx/themes/mytheme, ./themes/red-theme, etc. | ||
|
|
||
| set -euo pipefail | ||
|
|
||
| COL_SECTION="\e[1;36m" # Section header color (bold cyan) | ||
| COL_LOG="\e[36m" # Log color (cyan) | ||
| COL_WARNING="\e[1;33m" # Warning (bold yellow) | ||
| COL_ERROR="\e[1;31m" # Error (bold red) | ||
| COL_CMD="\e[35m" # Command echoing (magenta) | ||
| COL_OFF="\e[0m" # Normal color | ||
|
|
||
| section() { | ||
| # Print a header in bold cyan to indicate sections of output. | ||
| echo -e "${COL_SECTION}$*${COL_OFF}" | ||
| } | ||
| log() { | ||
| # Info line. Indented by one space so that it appears as nested under section headers. | ||
| echo -e " ${COL_LOG}$*${COL_OFF}" | ||
| } | ||
| warning() { | ||
| # Bright yellow warning message. | ||
| echo -e "${COL_WARNING}WARNING: $*${COL_OFF}" | ||
| } | ||
| error() { | ||
| # Bright red error message. | ||
| echo -e "${COL_ERROR}ERROR: $*${COL_OFF}" | ||
| } | ||
| echo_quoted_cmd() { | ||
| # Echo args, each single-quoted, so that the user could copy-paste and run them as a command. | ||
| # Indented by two spaces so it appears as nested under log lines. | ||
| echo -e " ${COL_CMD}$(printf "'%s' " "$@")${COL_OFF}" | ||
| } | ||
|
|
||
| start_sass_watch() { | ||
| # Start a watch for .scss files in a particular dir. Run in the background. | ||
| # start_sass_watch NAME_FOR_LOGGING WATCH_ROOT_PATH HANDLER_COMMAND | ||
| local name="$1" | ||
| local path="$2" | ||
| local handler="$3" | ||
| log "Starting watcher for $name:" | ||
| # Note: --drop means that we should ignore any change events that happen during recompilation. | ||
| # This is good because it means that if you edit 3 files, we won't fire off three simultaneous compiles. | ||
| # It's not perfect, though, because if you change 3 files, only the first one will trigger a recompile, | ||
| # so depending on the timing, your latest changes may or may not be picked up. We accept this as a reasonable | ||
| # tradeoff. Some watcher libraries are smarter than watchdog, in that they wait until the filesystem "settles" | ||
| # before firing off a the recompilation. This sounds nice but did not seem worth the effort for legacy assets. | ||
| local watch_cmd=(watchmedo shell-command -v --patterns '*.scss' --recursive --drop --command "$handler" "$path") | ||
| echo_quoted_cmd "${watch_cmd[@]}" | ||
| "${watch_cmd[@]}" & | ||
| } | ||
|
|
||
| clean_up() { | ||
| # Kill all background processes we started. | ||
| # Since they're all 'watchmedo' instances, we can just use killall. | ||
| log "Stopping all watchers:" | ||
| local stop_cmd=(killall watchmedo) | ||
| echo_quoted_cmd "${stop_cmd[@]}" | ||
| "${stop_cmd[@]}" || true | ||
| log "Watchers stopped." | ||
| } | ||
|
|
||
| warning "'npm run watch-sass' in edx-platform is experimental. Use at your own risk." | ||
|
|
||
| if [[ ! -d common/static/sass ]] ; then | ||
| error 'This command must be run from the root of edx-platform!' | ||
| exit 1 | ||
| fi | ||
| if ! type watchmedo 1>/dev/null 2>&1 ; then | ||
| error "command not found: watchmedo" | ||
| log "The \`watchdog\` Python package is probably not installed. You can install it with:" | ||
| log " pip install -r requirements/edx/development.txt" | ||
| exit 1 | ||
| fi | ||
|
|
||
| trap clean_up EXIT | ||
|
|
||
| # Start by compiling all watched Sass right away, mirroring the behavior of webpack --watch. | ||
| section "COMPILING SASS:" | ||
| npm run compile-sass | ||
| echo | ||
| echo | ||
|
|
||
| section "STARTING DEFAULT SASS WATCHERS:" | ||
|
|
||
| # Changes to LMS Sass require a full recompilation, since LMS Sass can be used in CMS and in themes. | ||
| start_sass_watch "default LMS Sass" \ | ||
| lms/static/sass \ | ||
| 'npm run compile-sass-dev' | ||
|
|
||
| # Changes to default cert Sass only require recompilation of default cert Sass, since cert Sass | ||
| # cannot be included into LMS, CMS, or themes. | ||
| start_sass_watch "default certificate Sass" \ | ||
| lms/static/certificates/sass \ | ||
| 'npm run compile-sass-dev -- --skip-cms --skip-themes' | ||
|
|
||
| # Changes to CMS Sass require recompilation of default & themed CMS Sass, but not LMS Sass. | ||
| start_sass_watch "default CMS Sass" \ | ||
| cms/static/sass \ | ||
| 'npm run compile-sass-dev -- --skip-lms' | ||
|
|
||
| # Sass changes in common, node_modules, and xmodule all require full recompilations. | ||
| start_sass_watch "default common Sass" \ | ||
| common/static \ | ||
| 'npm run compile-sass-dev' | ||
| start_sass_watch "node_modules Sass" \ | ||
| node_modules \ | ||
| 'npm run compile-sass-dev' | ||
| start_sass_watch "builtin XBlock Sass" \ | ||
| xmodule/assets \ | ||
| 'npm run compile-sass-dev' | ||
|
|
||
| export IFS=";" | ||
| for theme_dir in ${EDX_PLATFORM_THEME_DIRS:-} ; do | ||
| for theme_path in "$theme_dir"/* ; do | ||
|
|
||
| theme_name="${theme_path#"$theme_dir/"}" | ||
| lms_sass="$theme_path/lms/static/sass" | ||
| cert_sass="$theme_path/lms/static/certificates/sass" | ||
| cms_sass="$theme_path/cms/static/sass" | ||
|
|
||
| if [[ -d "$lms_sass" ]] || [[ -d "$cert_sass" ]] || [[ -d "$cms_sass" ]] ; then | ||
| section "STARTING WATCHERS FOR THEME '$theme_name':" | ||
| fi | ||
|
|
||
| # Changes to a theme's LMS Sass require that the full theme is recompiled, since LMS | ||
| # Sass is used in certs and CMS. | ||
| if [[ -d "$lms_sass" ]] ; then | ||
| start_sass_watch "$theme_name LMS Sass" \ | ||
| "$lms_sass" \ | ||
| "npm run compile-sass-dev -- -T $theme_dir -t $theme_name --skip-default" | ||
| fi | ||
|
|
||
| # Changes to a theme's certs Sass only requires that its certs Sass be recompiled. | ||
| if [[ -d "$cert_sass" ]] ; then | ||
| start_sass_watch "$theme_name certificate Sass" \ | ||
| "$cert_sass" \ | ||
| "npm run compile-sass-dev -- -T $theme_dir -t $theme_name --skip-default --skip-cms" | ||
| fi | ||
|
|
||
| # Changes to a theme's CMS Sass only requires that its CMS Sass be recompiled. | ||
| if [[ -d "$cms_sass" ]] ; then | ||
| start_sass_watch "$theme_name CMS Sass" \ | ||
| "$cms_sass" \ | ||
| "npm run compile-sass-dev -- -T $theme_dir -t $theme_name --skip-default --skip-lms" | ||
| fi | ||
|
|
||
| done | ||
| done | ||
|
|
||
| sleep infinity & | ||
| echo | ||
| echo "Watching Open edX LMS & CMS Sass for changes." | ||
| echo "Use Ctrl+c to exit." | ||
| echo | ||
| echo | ||
| wait $! | ||
|
|
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters