Adjust "latest" to be automatic based on "release status"

.architectures-lib

@@ -3,7 +3,7 @@
 hasBashbrewArch() {
 	local version="$1"; shift
 	local bashbrewArch="$1"; shift
-	local arches="$(grep 'bashbrew-architectures:' "$version/Dockerfile" | cut -d':' -f2)"
+	local arches="$(grep -m1 'bashbrew-architectures:' "$version/Dockerfile" | cut -d':' -f2)"
 	[[ " $arches " == *" $bashbrewArch "* ]]
 }
 

10.0/Dockerfile

@@ -91,6 +91,8 @@ RUN set -ex; \
 # bashbrew-architectures: amd64 arm64v8 i386 ppc64le
 ENV MARIADB_MAJOR 10.0
 ENV MARIADB_VERSION 10.0.38+maria-1~xenial
+# release-status:Stable
+# (https://downloads.mariadb.org/mariadb/+releases/)
 
 RUN set -e;\
 	echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu xenial main" > /etc/apt/sources.list.d/mariadb.list; \

10.1/Dockerfile

@@ -91,6 +91,8 @@ RUN set -ex; \
 # bashbrew-architectures: amd64 arm64v8 ppc64le
 ENV MARIADB_MAJOR 10.1
 ENV MARIADB_VERSION 1:10.1.38+maria-1~bionic
+# release-status:Stable
+# (https://downloads.mariadb.org/mariadb/+releases/)
 
 RUN set -e;\
 	echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu bionic main" > /etc/apt/sources.list.d/mariadb.list; \

10.2/Dockerfile

@@ -91,6 +91,8 @@ RUN set -ex; \
 # bashbrew-architectures: amd64 arm64v8 ppc64le
 ENV MARIADB_MAJOR 10.2
 ENV MARIADB_VERSION 1:10.2.22+maria~bionic
+# release-status:Stable
+# (https://downloads.mariadb.org/mariadb/+releases/)
 
 RUN set -e;\
 	echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu bionic main" > /etc/apt/sources.list.d/mariadb.list; \

10.3/Dockerfile

@@ -91,6 +91,8 @@ RUN set -ex; \
 # bashbrew-architectures: amd64 arm64v8 ppc64le
 ENV MARIADB_MAJOR 10.3
 ENV MARIADB_VERSION 1:10.3.13+maria~bionic
+# release-status:Stable
+# (https://downloads.mariadb.org/mariadb/+releases/)
 
 RUN set -e;\
 	echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu bionic main" > /etc/apt/sources.list.d/mariadb.list; \

10.4/Dockerfile

@@ -91,6 +91,8 @@ RUN set -ex; \
 # bashbrew-architectures: amd64 arm64v8 ppc64le
 ENV MARIADB_MAJOR 10.4
 ENV MARIADB_VERSION 1:10.4.3+maria~bionic
+# release-status:RC
+# (https://downloads.mariadb.org/mariadb/+releases/)
 
 RUN set -e;\
 	echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu bionic main" > /etc/apt/sources.list.d/mariadb.list; \

5.5/Dockerfile

@@ -91,6 +91,8 @@ RUN set -ex; \
 # bashbrew-architectures: amd64 i386 ppc64le
 ENV MARIADB_MAJOR 5.5
 ENV MARIADB_VERSION 5.5.63+maria-1~trusty
+# release-status:Stable
+# (https://downloads.mariadb.org/mariadb/+releases/)
 
 RUN set -e;\
 	echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu trusty main" > /etc/apt/sources.list.d/mariadb.list; \

Dockerfile.template

@@ -91,6 +91,8 @@ RUN set -ex; \
 # bashbrew-architectures:%%ARCHES%%
 ENV MARIADB_MAJOR %%MARIADB_MAJOR%%
 ENV MARIADB_VERSION %%MARIADB_VERSION%%
+# release-status:%%MARIADB_RELEASE_STATUS%%
+# (https://downloads.mariadb.org/mariadb/+releases/)
 
 RUN set -e;\
 	echo "deb http://ftp.osuosl.org/pub/mariadb/repo/$MARIADB_MAJOR/ubuntu %%SUITE%% main" > /etc/apt/sources.list.d/mariadb.list; \

generate-stackbrew-library.sh

@@ -2,11 +2,13 @@
 set -eu
 
 declare -A aliases=(
-	# https://github.com/docker-library/mariadb/pull/83 ("alpha", "beta", "rc" tag discussion)
-	[10.3]='10 latest'
-	[5.5]='5'
+	#[10.3]='10 latest'
+	#[5.5]='5'
 )
 
+# "latest", "10", "5", etc aliases are auto-detected in the loop below
+declare -A latest=()
+
 self="$(basename "$BASH_SOURCE")"
 cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
 
@@ -66,6 +68,16 @@ for version in "${versions[@]}"; do
 	fi
 	versionAliases+=( ${aliases[$version]:-} )
 
+	releaseStatus="$(grep -m1 'release-status:' "$version/Dockerfile" | cut -d':' -f2)"
+	if [ "$releaseStatus" = 'Stable' ]; then
+		for tryAlias in "${version%%.*}" latest; do
+			if [ -z "${latest[$tryAlias]:-}" ]; then
+				latest[$tryAlias]="$version"
+				versionAliases+=( "$tryAlias" )
+			fi
+		done
+	fi
+
 	from="$(git show "$commit":"$version/Dockerfile" | awk '$1 == "FROM" { print $2; exit }')"
 	distro="${from%%:*}" # "debian", "ubuntu"
 	suite="${from#$distro:}" # "jessie-slim", "xenial"

update.sh

@@ -50,6 +50,25 @@ for version in "${versions[@]}"; do
 		continue
 	fi
 
+	mariaVersion="${fullVersion##*:}"
+	mariaVersion="${mariaVersion%%[-+~]*}"
+
+	# "Alpha", "Beta", "Gamma", "RC", "Stable", etc.
+	releaseStatus="$(
+		wget -qO- 'https://downloads.mariadb.org/mariadb/+releases/' \
+			| xargs -d '\n' \
+			| grep -oP '<tr>.+?</tr>' \
+			| grep -P '>\Q'"$mariaVersion"'\E<' \
+			| grep -oP '<td>[^0-9][^<]*</td>' \
+			| sed -r 's!^.*<td>([^0-9][^<]*)</td>.*$!\1!'
+	)"
+	case "$releaseStatus" in
+		Alpha | Beta | Gamma | RC | Stable ) ;; # sanity check
+		*) echo >&2 "error: unexpected 'release status' value for $mariaVersion: $releaseStatus"; exit 1 ;;
+	esac
+
+	echo "$version: $mariaVersion ($releaseStatus)"
+
 	arches=
 	sortedArches="$(echo "${!dpkgArchToBashbrew[@]}" | xargs -n1 | sort | xargs)"
 	for arch in $sortedArches; do
@@ -71,18 +90,16 @@ for version in "${versions[@]}"; do
 		backup="$backup-$version"
 	fi
 
-	(
-		set -x
-		cp docker-entrypoint.sh "$version/"
-		sed -i \
-			-e 's!%%MARIADB_VERSION%%!'"$fullVersion"'!g' \
-			-e 's!%%MARIADB_MAJOR%%!'"$version"'!g' \
-			-e 's!%%SUITE%%!'"$suite"'!g' \
-			-e 's!%%BACKUP_PACKAGE%%!'"$backup"'!g' \
-			-e 's!%%ARCHES%%!'"$arches"'!g' \
-			"$version/Dockerfile"
-	)
-
+	cp docker-entrypoint.sh "$version/"
+	sed -i \
+		-e 's!%%MARIADB_VERSION%%!'"$fullVersion"'!g' \
+		-e 's!%%MARIADB_MAJOR%%!'"$version"'!g' \
+		-e 's!%%MARIADB_RELEASE_STATUS%%!'"$releaseStatus"'!g' \
+		-e 's!%%SUITE%%!'"$suite"'!g' \
+		-e 's!%%BACKUP_PACKAGE%%!'"$backup"'!g' \
+		-e 's!%%ARCHES%%!'"$arches"'!g' \
+		"$version/Dockerfile"
+
 	travisEnv='\n  - VERSION='"$version$travisEnv"
 done