install-java

#!/usr/local/bin/python3
# Copyright (c) KMG. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
##
import os
import subprocess

import jdk
import threading

JDK_VERSION = '17'
JDK_PATH = os.path.expanduser('~') + os.sep + 'jdk-' + JDK_VERSION
JAVA_HOME_DIR = os.sep + 'Contents' + os.sep + 'Home'


def install_java(res):
    # Platform dependent install of Java JDK 17
    os.system('mkdir -p '+JDK_PATH)
    val = jdk.install(JDK_VERSION, path=JDK_PATH)
    res.append(val)


def download_install_java():
    # Obtains the platform dependent JDK download url
    download_url = jdk.get_download_url(JDK_VERSION)
    print("JDK Download URL: " + download_url)
    print("Detected OS: " + jdk.OS)  # Detected platform operating system
    print("CPU type: " + jdk.ARCH)  # Detected platform CPU architecture
    lt = []
    th = threading.Thread(target=install_java, args=(lt,))
    print("Downloading and installing JDK " + JDK_VERSION + " ", end="", flush=True)
    th.start()
    while th.is_alive():
        print(".", end="", flush=True)
        try:
            th.join(1)
        except Exception as ex:
            print(ex)
            break
    print()
    if len(lt) > 0:
        print("Successfully Installed JDK " + JDK_VERSION + " in the path: " + lt[0])
        print("Set JAVA_HOME environment variable to " + lt[0] + JAVA_HOME_DIR)
    else:
        print("JDK " + JDK_VERSION + " installation failed!")


def get_java_version(text):
    ret = " "
    try:
        out = text.split('"', 2)
        ret = out[1].split('.')[0]
    except Exception:
        pass
    return ret


def check_java_version():
    process = subprocess.Popen(['java', '-version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE,
                               universal_newlines=True)
    stdout, stderr = process.communicate()
    val1, val2 = get_java_version(stdout), get_java_version(stderr)
    ret = val1 >= JDK_VERSION or val2 >= JDK_VERSION
    if ret:
        print("stdout Java Major version: " + val1)
        print("stderr Java Major version: " + val2)
    return ret


if __name__ == "__main__":
    if check_java_version():
        print("JDK version: " + JDK_VERSION + " or higher already found in this system. Skipping JDK "
                                              "installation!")
    else:
        print("Downloading and installing JDK Version: " + JDK_VERSION)
        download_install_java()