以安装apache-flink为例展开说明。

0x00 查看软件包安装来源

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brew inso apache-flink

执行上面命令，我们得到如下信息：

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apache-flink: stable 1.15.0 (bottled), HEAD
Scalable batch and stream data processing
https://flink.apache.org/
Not installed
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/apache-flink.rb
License: Apache-2.0
==> Dependencies
Required: openjdk@11 ✘
==> Options
--HEAD
    Install HEAD version
==> Analytics
install: 634 (30 days), 1,501 (90 days), 5,931 (365 days)
install-on-request: 634 (30 days), 1,504 (90 days), 5,926 (365 days)
build-error: 0 (30 days)

其中https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/apache-flink.rb以及apache-flink: stable 1.15.0 (bottled)这两条信息，这说明现在的apache-flink的版本是1.15.0，安装文件为.rb的文件。

brew的安装库是通过github托管的，那么一定是有提交信息可查询的。

0x01 在github中查看rb文件的提交版本信息

复制https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/apache-flink.rb在浏览器中，打开github提交页面，我们看到如下信息：

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class ApacheFlink < Formula
  desc "Scalable batch and stream data processing"
  homepage "https://flink.apache.org/"
  url "https://www.apache.org/dyn/closer.lua?path=flink/flink-1.15.1/flink-1.15.1-bin-scala_2.12.tgz"
  mirror "https://archive.apache.org/dist/flink/flink-1.15.1/flink-1.15.1-bin-scala_2.12.tgz"
  version "1.15.1"
  sha256 "9213f9e4bb087cbc6d3c9ab4ac4215fab4199bbfabf0a09f3c138f216d854c5b"
  license "Apache-2.0"
  head "https://github.com/apache/flink.git", branch: "master"

  bottle do
    sha256 cellar: :any_skip_relocation, all: "9a062793325af350899b8c96ed6302bb911019100a080c96e63074e73970769c"
  end

  depends_on "openjdk@11"

  def install
    rm_f Dir["bin/*.bat"]
    libexec.install Dir["*"]
    (libexec/"bin").env_script_all_files(libexec/"libexec", Language::Java.java_home_env("11"))
    (libexec/"bin").install Dir["#{libexec}/libexec/*.jar"]
    chmod 0755, Dir["#{libexec}/bin/*"]
    bin.write_exec_script "#{libexec}/bin/flink"
  end

  test do
    (testpath/"log").mkpath
    (testpath/"input").write "foo bar foobar"
    expected = <<~EOS
      (foo,1)
      (bar,1)
      (foobar,1)
    EOS
    ENV.prepend "_JAVA_OPTIONS", "-Djava.io.tmpdir=#{testpath}"
    ENV.prepend "FLINK_LOG_DIR", testpath/"log"
    system libexec/"bin/start-cluster.sh"
    system bin/"flink", "run", "-p", "1",
           libexec/"examples/streaming/WordCount.jar", "--input", testpath/"input",
           "--output", testpath/"result"
    system libexec/"bin/stop-cluster.sh"
    assert_predicate testpath/"result", :exist?
    result_files = Dir[testpath/"result/*/*"]
    assert_equal 1, result_files.length
    assert_equal expected, (testpath/result_files.first).read
  end
end

可以看到当前的版本为1.15.1。

  1. 点击History： 查看历史提交列表
    Github History
  2. 查找apache-flink 1.14.4
  3. 点击 View：查看当前版本下的 apache-flink.rb完整文件
    Github History View
  4. 复制链接：浏览器当前的链接就是对应版本的安装链接。

https://github.com/Homebrew/homebrew-core/blob/3715b837cea78e8478433c2c9358d09e8190fe49/Formula/apache-flink.rb

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brew install https://github.com/Homebrew/homebrew-core/blob/3715b837cea78e8478433c2c9358d09e8190fe49/Formula/apache-flink.rb

0x03 错误问题处理

Error: Non-checksummed download of apache-flink formula file from an arbitrary URL is unsupported! brew extract or brew create and brew tap-new to create a formula file in a tap on GitHub instead.

安装过程中出现如上的错误提示。解决方式如下：

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touch apache-flink.rb
open -e apache-flink.rb

打开上面的链接，复制内容并粘贴到apache-flink.rb中保存，然后再次安装

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brew install apache-flink.rb

如果再次出现其他错误，继续解决：

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Error: Couldn't find manifest matching bottle checksum.
/usr/local/Homebrew/Library/Homebrew/software_spec.rb:399:in `github_packages_manifest_resource_tab'
/usr/local/Homebrew/Library/Homebrew/software_spec.rb:352:in `fetch_tab'
/usr/local/Homebrew/Library/Homebrew/software_spec.rb:322:in `rescue in fetch'
/usr/local/Homebrew/Library/Homebrew/software_spec.rb:317:in `fetch'
/usr/local/Homebrew/Library/Homebrew/formula_installer.rb:1182:in `fetch'
/usr/local/Homebrew/Library/Homebrew/install.rb:305:in `block in install_formulae'
/usr/local/Homebrew/Library/Homebrew/install.rb:278:in `map'
/usr/local/Homebrew/Library/Homebrew/install.rb:278:in `install_formulae'
/usr/local/Homebrew/Library/Homebrew/cmd/install.rb:222:in `install'
/usr/local/Homebrew/Library/Homebrew/brew.rb:93:in `<main>'