feat: use Oracle Java Releases API for latest Oracle JDK

https://blogs.oracle.com/java/post/oracle-java-releases-public-apis

Closes #50

Author: joschi

bin/oracle.bash

@@ -24,48 +24,15 @@ ensure_directory "${CHECKSUM_DIR}"
 # shellcheck disable=SC2016
 REGEX='s/^jdk-([0-9+.]{2,})_(linux|macos|windows)-(x64|aarch64)_bin\.(tar\.gz|zip|msi|dmg|exe|deb|rpm)$/VERSION="$1" OS="$2" ARCH="$3" ARCHIVE="$4"/g'
 
-function current_releases {
-	local version="$1"
-
-	# https://www.oracle.com/java/technologies/jdk-script-friendly-urls/
-	local -a params=(
-		'linux,aarch64,rpm:tar.gz'
-		'linux,x64,deb:rpm:tar.gz'
-		'macos,aarch64,dmg:tar.gz'
-		'macos,x64,dmg:tar.gz'
-		'windows,x64,exe:msi:zip'
-		)
-	for param in "${params[@]}"
-	do
-		local os
-		os=$(cut -f1 -d, <<<"$param")
-		local arch
-		arch=$(cut -f2 -d, <<<"$param")
-		local ext_list
-		ext_list=$(cut -f3 -d, <<<"$param")
-
-		for ext in ${ext_list//:/ }
-		do
-			echo "jdk-${version}_${os}-${arch}_bin.${ext}"
-		done
-	done
-}
-
 function download_and_parse {
 	MAJOR_VERSION="${1}"
 	INDEX_FILE="${TEMP_DIR}/index${MAJOR_VERSION}.html"
 
 	download_file "https://www.oracle.com/java/technologies/javase/jdk${MAJOR_VERSION}-archive-downloads.html" "${INDEX_FILE}"
 
 	JDK_FILES=$(grep -o -E '<a href="https://download\.oracle\.com/java/.+/archive/(jdk-.+_(linux|macos|windows)-(x64|aarch64)_bin\.(tar\.gz|zip|msi|dmg|exe|deb|rpm))">' "${INDEX_FILE}" | perl -pe 's#<a href="https://download\.oracle\.com/java/.+/archive/(.+)">#$1#g' | sort -V)
-	CURRENT_RELEASE=$(curl -sSf https://www.oracle.com/java/technologies/downloads/ | (grep "<h3 id=\"java${MAJOR_VERSION}\"" || true) | perl -pe 's#<h3 id="java[0-9]{2}">JDK Development Kit (.+) downloads</h3>#$1#g')
-	JDK_FILES_CURRENT=""
-	if [[ -n "${CURRENT_RELEASE}" ]]
-	then
-		JDK_FILES_CURRENT=$(current_releases "${CURRENT_RELEASE}")
-	fi
-
-	for JDK_FILE in ${JDK_FILES} ${JDK_FILES_CURRENT}
+
+	for JDK_FILE in ${JDK_FILES}
 	do
 		if [[ -z "${JDK_FILE}" ]]
 		then
@@ -131,4 +98,63 @@ do
 	download_and_parse "$version"
 done
 
-jq -s -S . "${METADATA_DIR}"/jdk-*.json > "${METADATA_DIR}/all.json"
+# Latest
+download_file "https://java.oraclecloud.com/javaVersions" "${TEMP_DIR}/latest-versions.json"
+for version in $(jq -r '.items[].latestReleaseVersion' "${TEMP_DIR}/latest-versions.json")
+do
+	download_file "https://java.oraclecloud.com/javaReleases/${version}" "${TEMP_DIR}/release-${version}.json"
+	for JDK_URL in $(jq -r '.artifacts[].downloadUrl' "${TEMP_DIR}/release-${version}.json")
+	do
+		JDK_FILE=$(basename "${JDK_URL}")
+		JDK_ARCHIVE="${TEMP_DIR}/${JDK_FILE}"
+		METADATA_FILE="${METADATA_DIR}/${JDK_FILE}.json"
+		if [[ -f "${METADATA_FILE}" ]]
+		then
+			echo "Skipping ${JDK_FILE}"
+		else
+			if ! download_file "${JDK_URL}" "${JDK_ARCHIVE}";
+			then
+				echo "Failed to download ${JDK_FILE}, skipping"
+				continue
+			fi
+			VERSION=""
+			OS=""
+			ARCH=""
+			ARCHIVE=""
+
+			# Parse meta-data from file name
+			PARSED_NAME=$(perl -pe "${REGEX}" <<< "${JDK_FILE}")
+			if [[ "${PARSED_NAME}" = "${JDK_FILE}" ]]
+			then
+				echo "Regular expression didn't match ${JDK_FILE}"
+				continue
+			else
+				eval "${PARSED_NAME}"
+			fi
+
+			METADATA_JSON="$(metadata_json \
+				"${VENDOR}" \
+				"${JDK_FILE}" \
+				"ga" \
+				"${VERSION}" \
+				"${VERSION}" \
+				'hotspot' \
+				"$(normalize_os "${OS}")" \
+				"$(normalize_arch "${ARCH}")" \
+				"${ARCHIVE}" \
+				"jdk" \
+				"" \
+				"${JDK_URL}" \
+				"$(hash_file 'md5' "${JDK_ARCHIVE}" "${CHECKSUM_DIR}")" \
+				"$(hash_file 'sha1' "${JDK_ARCHIVE}" "${CHECKSUM_DIR}")" \
+				"$(hash_file 'sha256' "${JDK_ARCHIVE}" "${CHECKSUM_DIR}")" \
+				"$(hash_file 'sha512' "${JDK_ARCHIVE}" "${CHECKSUM_DIR}")" \
+				"$(file_size "${JDK_ARCHIVE}")" \
+				"${JDK_FILE}"
+			)"
+
+			echo "${METADATA_JSON}" > "${METADATA_FILE}"
+			rm -f "${JDK_ARCHIVE}"
+		fi
+	done
+done