added download_azul_openjdk.sh

install/download_azul_openjdk.sh

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2024-08-21 10:13:38 +0200 (Wed, 21 Aug 2024)
+#
+#  https///github.com/HariSekhon/DevOps-Bash-tools
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
+#
+#  https://www.linkedin.com/in/HariSekhon
+#
+
+set -euo pipefail
+[ -n "${DEBUG:-}" ] && set -x
+srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+# shellcheck disable=SC1090,SC1091
+. "$srcdir/../lib/utils.sh"
+
+# shellcheck disable=SC2034,SC2154
+usage_description="
+Downloads Azul OpenJDK version for Linux x86_64
+
+If Java version is not specified, automatically determines latest version to download
+"
+
+# used by usage() in lib/utils.sh
+# shellcheck disable=SC2034
+usage_args="[<java_version>]"
+
+help_usage "$@"
+
+#min_args 1 "$@"
+
+java_version="${1:-}"
+
+if is_mac; then
+	grep(){
+		command ggrep "$@"
+	}
+fi
+
+url_base="https://cdn.azul.com/zulu/bin"
+
+timestamp "Fetching directory listing of versions from: $url_base/"
+timestamp "(slow, takes 30 seconds due to large listing, please wait)"
+directory_listing="$(curl -sS "$url_base/")"
+
+if is_blank "$java_version"; then
+    timestamp "Java version not specified, attempting to find latest JDK version"
+    # super brittle to pass a web page that will change
+    versions="$(grep -P -o 'jdk\K\d+' <<< "$directory_listing" || die "Failed to parse JDK versions out of directory listing")"
+    java_version="$(sort -nr <<< "$versions" | head -n1 || :)"
+    is_blank "$java_version" && die "Failed to parse JDK version from list of versions"
+    timestamp "Determined latest JDK version to be $java_version"
+fi
+
+timestamp "Parsing download path from directory listing"
+# links are relative
+download_paths="$(grep -Eo "/zulu/bin/zulu[^>]+jdk${java_version}[._-][^>]+-linux_x64.tar.gz" <<< "$directory_listing" ||
+                  die "Failed to parse download URL")"
+download_path="$(tail -n1 <<< "$download_paths" | sed 's|/zulu/bin/||')"
+
+download_url="$url_base/$download_path"
+
+timestamp "Downloading $download_url"
+wget -c "$download_url"
+timestamp "Download complete"