mirror of
https://github.com/YunoHost-Apps/leed_ynh.git
synced 2024-09-03 19:26:32 +02:00
310 lines
12 KiB
Bash
Executable file
310 lines
12 KiB
Bash
Executable file
#!/bin/bash
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#=================================================
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# COMMON VARIABLES
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#=================================================
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#=================================================
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# PERSONAL HELPERS
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#=================================================
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#=================================================
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# EXPERIMENTAL HELPERS
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#=================================================
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#=================================================
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ynh_maintenance_mode_ON () {
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# Load value of $path and $domain from the config if their not set
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if [ -z $path ]; then
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#REMOVEME? path=$(ynh_app_setting_get $app path)
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fi
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if [ -z $domain ]; then
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#REMOVEME? domain=$(ynh_app_setting_get $app domain)
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fi
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mkdir -p /var/www/html/
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# Create an html to serve as maintenance notice
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echo "<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="refresh" content="3">
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<title>Your app $app is currently under maintenance!</title>
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<style>
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body {
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width: 70em;
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margin: 0 auto;
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}
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</style>
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</head>
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<body>
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<h1>Your app $app is currently under maintenance!</h1>
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<p>This app has been put under maintenance by your administrator at $(date)</p>
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<p>Please wait until the maintenance operation is done. This page will be reloaded as soon as your app will be back.</p>
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</body>
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</html>" > "/var/www/html/maintenance.$app.html"
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# Create a new nginx config file to redirect all access to the app to the maintenance notice instead.
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echo "# All request to the app will be redirected to ${path}_maintenance and fall on the maintenance notice
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rewrite ^${path}/(.*)$ ${path}_maintenance/? redirect;
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# Use another location, to not be in conflict with the original config file
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location ${path}_maintenance/ {
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alias /var/www/html/ ;
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try_files maintenance.$app.html =503;
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# Include SSOWAT user panel.
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include conf.d/yunohost_panel.conf.inc;
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}" > "/etc/nginx/conf.d/$domain.d/maintenance.$app.conf"
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# The current config file will redirect all requests to the root of the app.
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# To keep the full path, we can use the following rewrite rule:
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# rewrite ^${path}/(.*)$ ${path}_maintenance/\$1? redirect;
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# The difference will be in the $1 at the end, which keep the following queries.
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# But, if it works perfectly for a html request, there's an issue with any php files.
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# This files are treated as simple files, and will be downloaded by the browser.
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# Would be really be nice to be able to fix that issue. So that, when the page is reloaded after the maintenance, the user will be redirected to the real page he was.
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systemctl reload nginx
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}
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ynh_maintenance_mode_OFF () {
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# Load value of $path and $domain from the config if their not set
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if [ -z $path ]; then
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#REMOVEME? path=$(ynh_app_setting_get $app path)
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fi
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if [ -z $domain ]; then
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#REMOVEME? domain=$(ynh_app_setting_get $app domain)
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fi
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# Rewrite the nginx config file to redirect from ${path}_maintenance to the real url of the app.
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echo "rewrite ^${path}_maintenance/(.*)$ ${path}/\$1 redirect;" > "/etc/nginx/conf.d/$domain.d/maintenance.$app.conf"
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systemctl reload nginx
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# Sleep 4 seconds to let the browser reload the pages and redirect the user to the app.
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sleep 4
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# Then remove the temporary files used for the maintenance.
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rm "/var/www/html/maintenance.$app.html"
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rm "/etc/nginx/conf.d/$domain.d/maintenance.$app.conf"
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systemctl reload nginx
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}
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#=================================================
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# Create a changelog for an app after an upgrade from the file CHANGELOG.md.
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#
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# usage: ynh_app_changelog [--format=markdown/html/plain] [--output=changelog_file] --changelog=changelog_source]
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# | arg: -f --format= - Format in which the changelog will be printed
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# markdown: Default format.
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# html: Turn urls into html format.
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# plain: Plain text changelog
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# | arg: -o --output= - Output file for the changelog file (Default ./changelog)
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# | arg: -c --changelog= - CHANGELOG.md source (Default ../CHANGELOG.md)
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#
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# The changelog is printed into the file ./changelog and ./changelog_lite
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ynh_app_changelog () {
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# Declare an array to define the options of this helper.
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local legacy_args=foc
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declare -Ar args_array=( [f]=format= [o]=output= [c]=changelog= )
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local format
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local output
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local changelog
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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format=${format:-markdown}
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output=${output:-changelog}
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changelog=${changelog:-../CHANGELOG.md}
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local original_changelog="$changelog"
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local temp_changelog="changelog_temp"
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local final_changelog="$output"
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if [ ! -n "$original_changelog" ]
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then
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echo "No changelog available..." > "$final_changelog"
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echo "No changelog available..." > "${final_changelog}_lite"
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return 0
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fi
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#REMOVEME? local current_version=$(ynh_read_manifest --manifest="/etc/yunohost/apps/$YNH_APP_INSTANCE_NAME/manifest.json" --manifest_key="version")
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local update_version=$(ynh_read_manifest --manifest="../manifest.json" --manifest_key="version")
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# Get the line of the version to update to into the changelog
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local update_version_line=$(grep --max-count=1 --line-number "^## \[$update_version" "$original_changelog" | cut -d':' -f1)
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# If there's no entry for this version yet into the changelog
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# Get the first available version
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if [ -z "$update_version_line" ]
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then
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update_version_line=$(grep --max-count=1 --line-number "^##" "$original_changelog" | cut -d':' -f1)
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fi
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# Get the length of the complete changelog.
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local changelog_length=$(wc --lines "$original_changelog" | awk '{print $1}')
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# Cut the file before the version to update to.
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tail --lines=$(( $changelog_length - $update_version_line + 1 )) "$original_changelog" > "$temp_changelog"
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# Get the length of the troncated changelog.
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changelog_length=$(wc --lines "$temp_changelog" | awk '{print $1}')
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# Get the line of the current version into the changelog
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# Keep only the last line found
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local current_version_line=$(grep --line-number "^## \[$current_version" "$temp_changelog" | cut -d':' -f1 | tail --lines=1)
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# If there's no entry for this version into the changelog
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# Get the last available version
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if [ -z "$current_version_line" ]
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then
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current_version_line=$(grep --line-number "^##" "$original_changelog" | cut -d':' -f1 | tail --lines=1)
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fi
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# Cut the file before the current version.
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# Then grep the previous version into the changelog to get the line number of the previous version
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local previous_version_line=$(tail --lines=$(( $changelog_length - $current_version_line )) \
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"$temp_changelog" | grep --max-count=1 --line-number "^## " | cut -d':' -f1)
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# If there's no previous version into the changelog
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# Go until the end of the changelog
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if [ -z "$previous_version_line" ]
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then
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previous_version_line=$changelog_length
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fi
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# Cut the file after the previous version to keep only the changelog between the current version and the version to update to.
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head --lines=$(( $current_version_line + $previous_version_line - 1 )) "$temp_changelog" | tee "$final_changelog"
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if [ "$format" = "html" ]
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then
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# Replace markdown links by html links
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ynh_replace_string --match_string="\[\(.*\)\](\(.*\)))" --replace_string="<a href=\"\2\">\1</a>)" --target_file="$final_changelog"
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ynh_replace_string --match_string="\[\(.*\)\](\(.*\))" --replace_string="<a href=\"\2\">\1</a>" --target_file="$final_changelog"
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elif [ "$format" = "plain" ]
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then
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# Change title format.
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ynh_replace_string --match_string="^##.*\[\(.*\)\](\(.*\)) - \(.*\)$" --replace_string="## \1 (\3) - \2" --target_file="$final_changelog"
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# Change modifications lines format.
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ynh_replace_string --match_string="^\([-*]\).*\[\(.*\)\]\(.*\)" --replace_string="\1 \2 \3" --target_file="$final_changelog"
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fi
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# else markdown. As the file is already in markdown, nothing to do.
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# Keep only important changes into the changelog
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# Remove all minor changes
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sed '/^-/d' "$final_changelog" > "${final_changelog}_lite"
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# Remove all blank lines (to keep a clear workspace)
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sed --in-place '/^$/d' "${final_changelog}_lite"
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# Add a blank line at the end
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echo "" >> "${final_changelog}_lite"
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# Clean titles if there's no significative changes
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local line
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local previous_line=""
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while read line <&3
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do
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if [ -n "$previous_line" ]
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then
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# Remove the line if it's a title or a blank line, and the previous one was a title as well.
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if ( [ "${line:0:1}" = "#" ] || [ ${#line} -eq 0 ] ) && [ "${previous_line:0:1}" = "#" ]
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then
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ynh_replace_special_string --match_string="${previous_line//[/.}" --replace_string="" --target_file="${final_changelog}_lite"
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fi
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fi
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previous_line="$line"
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done 3< "${final_changelog}_lite"
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# Remove all blank lines again
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sed --in-place '/^$/d' "${final_changelog}_lite"
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# Restore changelog format with blank lines
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ynh_replace_string --match_string="^##.*" --replace_string="\n\n&\n" --target_file="${final_changelog}_lite"
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# Remove the 2 first blank lines
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sed --in-place '1,2d' "${final_changelog}_lite"
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# Add a blank line at the end
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echo "" >> "${final_changelog}_lite"
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# If changelog are empty, add an info
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if [ $(wc --words "$final_changelog" | awk '{print $1}') -eq 0 ]
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then
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echo "No changes from the changelog..." > "$final_changelog"
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fi
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if [ $(wc --words "${final_changelog}_lite" | awk '{print $1}') -eq 0 ]
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then
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echo "No significative changes from the changelog..." > "${final_changelog}_lite"
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fi
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}
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#=================================================
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# Check the amount of available RAM
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#
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# usage: ynh_check_ram [--required=RAM required in Mb] [--no_swap|--only_swap] [--free_ram]
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# | arg: -r, --required= - Amount of RAM required in Mb. The helper will return 0 is there's enough RAM, or 1 otherwise.
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# If --required isn't set, the helper will print the amount of RAM, in Mb.
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# | arg: -s, --no_swap - Ignore swap
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# | arg: -o, --only_swap - Ignore real RAM, consider only swap.
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# | arg: -f, --free_ram - Count only free RAM, not the total amount of RAM available.
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ynh_check_ram () {
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# Declare an array to define the options of this helper.
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declare -Ar args_array=( [r]=required= [s]=no_swap [o]=only_swap [f]=free_ram )
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local required
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local no_swap
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local only_swap
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# Manage arguments with getopts
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ynh_handle_getopts_args "$@"
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required=${required:-}
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no_swap=${no_swap:-0}
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only_swap=${only_swap:-0}
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local total_ram=$(vmstat --stats --unit M | grep "total memory" | awk '{print $1}')
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local total_swap=$(vmstat --stats --unit M | grep "total swap" | awk '{print $1}')
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local total_ram_swap=$(( total_ram + total_swap ))
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local free_ram=$(vmstat --stats --unit M | grep "free memory" | awk '{print $1}')
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local free_swap=$(vmstat --stats --unit M | grep "free swap" | awk '{print $1}')
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local free_ram_swap=$(( free_ram + free_swap ))
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# Use the total amount of ram
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local ram=$total_ram_swap
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if [ $free_ram -eq 1 ]
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then
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# Use the total amount of free ram
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ram=$free_ram_swap
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if [ $no_swap -eq 1 ]
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then
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# Use only the amount of free ram
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ram=$free_ram
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elif [ $only_swap -eq 1 ]
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then
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# Use only the amount of free swap
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ram=$free_swap
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fi
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else
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if [ $no_swap -eq 1 ]
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then
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# Use only the amount of free ram
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ram=$total_ram
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elif [ $only_swap -eq 1 ]
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then
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# Use only the amount of free swap
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ram=$total_swap
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fi
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fi
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if [ -n "$required" ]
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then
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# Return 1 if the amount of ram isn't enough.
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if [ $ram -lt $required ]
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then
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return 1
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else
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return 0
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fi
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# If no RAM is required, return the amount of available ram.
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else
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echo $ram
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fi
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}
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#=================================================
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# FUTURE OFFICIAL HELPERS
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#=================================================
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