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package org.sentrysoftware.metricshub.engine.common.helpers;
/*-
* ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
* MetricsHub Engine
* ჻჻჻჻჻჻
* Copyright 2023 - 2024 Sentry Software
* ჻჻჻჻჻჻
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see OS_LIST = List.of(
WINDOWS,
LINUX,
AIX,
SUN,
HP,
MAC_OS_X,
SOLARIS,
FREE_BSD,
OPEN_BSD,
NET_BSD
);
@Getter
private static final Optional OS = detectOs();
private static final boolean IS_WINDOWS = OS.isPresent() && OS.get().equals(WINDOWS);
/**
* Detect the current Local OS.
* @return An optional with the current local OS. Empty if not determined.
*/
static Optional detectOs() {
return getSystemOsName()
.map(String::toLowerCase)
.map(name -> OS_LIST.stream().filter(os -> name.startsWith(os.getOsTag())).findFirst().orElse(null));
}
/**
* Check if the Local OS is a Windows.
*
* @return true if Windows false otherwise.
*/
public static boolean isWindows() {
return IS_WINDOWS;
}
/**
* Get the OS Name from the System.
* @return An Optional of the OS name. Empty if not defined.
*/
public static Optional getSystemOsName() {
return Optional.ofNullable(System.getProperty("os.name"));
}
/**
* Get the OS Version from the System.
* @return An Optional of the OS version. Empty if not defined.
*/
public static Optional getSystemOsVersion() {
return Optional.ofNullable(System.getProperty("os.version"));
}
/**
* Visitor interface for local operating system types.
*/
public interface ILocalOsVisitor {
/**
* Visit method for Windows operating system.
*
* @param os Windows operating system instance
*/
void visit(Windows os);
/**
* Visit method for Linux operating system.
*
* @param os Linux operating system instance
*/
void visit(Linux os);
/**
* Visit method for Sun operating system.
*
* @param os Sun operating system instance
*/
void visit(Sun os);
/**
* Visit method for HP-UX operating system.
*
* @param os HP-UX operating system instance
*/
void visit(Hp os);
/**
* Visit method for Solaris operating system.
*
* @param os Solaris operating system instance
*/
void visit(Solaris os);
/**
* Visit method for AIX operating system.
*
* @param os AIX operating system instance
*/
void visit(Aix os);
/**
* Visit method for FreeBSD operating system.
*
* @param os FreeBSD operating system instance
*/
void visit(FreeBsd os);
/**
* Visit method for OpenBSD operating system.
*
* @param os OpenBSD operating system instance
*/
void visit(OpenBsd os);
/**
* Visit method for NetBSD operating system.
*
* @param os NetBSD operating system instance
*/
void visit(NetBsd os);
/**
* Visit method for macOS operating system.
*
* @param os macOS operating system instance
*/
void visit(MacOsx os);
}
/**
* Abstract base class representing a local operating system.
*/
@Getter
public abstract static class ILocalOs {
protected String osTag;
protected boolean unix;
/**
* Accepts a visitor for handling different types of local operating systems.
*
* @param visitor The visitor to accept.
*/
public abstract void accept(ILocalOsVisitor visitor);
}
/**
* Represents the Windows operating system.
*/
public static class Windows extends ILocalOs {
Windows() {
osTag = "windows";
unix = false;
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the Linux operating system.
*/
public static class Linux extends ILocalOs {
Linux() {
osTag = "linux";
unix = true;
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the Sun operating system.
*/
public static class Sun extends ILocalOs {
Sun() {
osTag = "sunos";
unix = true;
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the HP-UX operating system.
*/
public static class Hp extends ILocalOs {
Hp() {
osTag = "hp-ux";
unix = true;
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the Solaris operating system.
*/
public static class Solaris extends ILocalOs {
Solaris() {
osTag = "solaris";
unix = true;
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the Aix operating system.
*/
public static class Aix extends ILocalOs {
Aix() {
osTag = "aix";
unix = true;
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
@Getter
private abstract static class BsdOs extends ILocalOs {
private final boolean bsd;
BsdOs() {
bsd = true;
unix = true;
}
}
/**
* Represents the FreeBsd operating system.
*/
public static class FreeBsd extends BsdOs {
FreeBsd() {
super();
osTag = "freebsd";
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the OpenBSD operating system.
*/
public static class OpenBsd extends BsdOs {
OpenBsd() {
super();
osTag = "openbsd";
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the NetBSD operating system.
*/
public static class NetBsd extends BsdOs {
NetBsd() {
super();
osTag = "netbsd";
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
/**
* Represents the macOS operating system.
*/
public static class MacOsx extends ILocalOs {
MacOsx() {
osTag = "mac os x";
unix = true;
}
@Override
public void accept(final ILocalOsVisitor visitor) {
visitor.visit(this);
}
}
}