b8ae2a2af4
Motivation: HTTP is a plaintext protocol which means that someone may be able to eavesdrop the data. To prevent this, HTTPS should be used whenever possible. However, maintaining using https:// in all URLs may be difficult. The nohttp tool can help here. The tool scans all the files in a repository and reports where http:// is used. Modifications: - Added nohttp (via checkstyle) into the build process. - Suppressed findings for the websites that don't support HTTPS or that are not reachable Result: - Prevent using HTTP in the future. - Encourage users to use HTTPS when they follow the links they found in the code.
107 lines
4.2 KiB
Java
107 lines
4.2 KiB
Java
/*
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* Copyright 2017 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util;
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import io.netty.util.internal.ObjectUtil;
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import io.netty.util.internal.SystemPropertyUtil;
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import java.util.Locale;
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/**
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* A utility class for wrapping calls to {@link Runtime}.
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*/
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public final class NettyRuntime {
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/**
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* Holder class for available processors to enable testing.
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*/
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static class AvailableProcessorsHolder {
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private int availableProcessors;
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/**
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* Set the number of available processors.
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*
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* @param availableProcessors the number of available processors
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* @throws IllegalArgumentException if the specified number of available processors is non-positive
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* @throws IllegalStateException if the number of available processors is already configured
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*/
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synchronized void setAvailableProcessors(final int availableProcessors) {
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ObjectUtil.checkPositive(availableProcessors, "availableProcessors");
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if (this.availableProcessors != 0) {
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final String message = String.format(
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Locale.ROOT,
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"availableProcessors is already set to [%d], rejecting [%d]",
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this.availableProcessors,
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availableProcessors);
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throw new IllegalStateException(message);
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}
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this.availableProcessors = availableProcessors;
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}
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/**
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* Get the configured number of available processors. The default is {@link Runtime#availableProcessors()}.
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* This can be overridden by setting the system property "io.netty.availableProcessors" or by invoking
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* {@link #setAvailableProcessors(int)} before any calls to this method.
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*
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* @return the configured number of available processors
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*/
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@SuppressForbidden(reason = "to obtain default number of available processors")
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synchronized int availableProcessors() {
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if (this.availableProcessors == 0) {
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final int availableProcessors =
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SystemPropertyUtil.getInt(
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"io.netty.availableProcessors",
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Runtime.getRuntime().availableProcessors());
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setAvailableProcessors(availableProcessors);
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}
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return this.availableProcessors;
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}
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}
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private static final AvailableProcessorsHolder holder = new AvailableProcessorsHolder();
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/**
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* Set the number of available processors.
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*
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* @param availableProcessors the number of available processors
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* @throws IllegalArgumentException if the specified number of available processors is non-positive
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* @throws IllegalStateException if the number of available processors is already configured
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*/
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@SuppressWarnings("unused,WeakerAccess") // this method is part of the public API
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public static void setAvailableProcessors(final int availableProcessors) {
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holder.setAvailableProcessors(availableProcessors);
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}
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/**
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* Get the configured number of available processors. The default is {@link Runtime#availableProcessors()}. This
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* can be overridden by setting the system property "io.netty.availableProcessors" or by invoking
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* {@link #setAvailableProcessors(int)} before any calls to this method.
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*
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* @return the configured number of available processors
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*/
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public static int availableProcessors() {
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return holder.availableProcessors();
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}
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/**
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* No public constructor to prevent instances from being created.
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*/
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private NettyRuntime() {
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}
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}
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