homebrew-core/Formula/postgresql@12.rb

class PostgresqlAT12 < Formula
  desc "Object-relational database system"
  homepage "https://www.postgresql.org/"
  url "https://ftp.postgresql.org/pub/source/v12.12/postgresql-12.12.tar.bz2"
  sha256 "34b3f1c69408e22068c0c71b1827691f1c89153b0ad576c1a44f8920a858039c"
  license "PostgreSQL"
  revision 3

  livecheck do
    url "https://ftp.postgresql.org/pub/source/"
    regex(%r{href=["']?v?(12(?:\.\d+)+)/?["' >]}i)
  end

  bottle do
    sha256 arm64_monterey: "35b51531a93d35b8427f9bbaf208259d1041bb11b3c3523981b2fbef223069c4"
    sha256 arm64_big_sur:  "35a6b7039abf26352a9789de72a2d05c0f966fc35182294f748acd34d84c5bd1"
    sha256 monterey:       "29d8a5e8cbfaf65d032c891734fc396d987c93bad73781a29a93bfae85b3f19b"
    sha256 big_sur:        "b4395b09d3bdc7bd9961206bcd3d936a2a8d04d3b2fa749705c3d073c04ecc59"
    sha256 catalina:       "2b7ec1a8589162f7c32643357fb977e0f84cfa85cc952e7a639d68abfb25dc99"
    sha256 x86_64_linux:   "1e40b73857cd3bd9103cd37946d619aaf9cf6f6a9a480a43ac476af3396624a5"
  end

  keg_only :versioned_formula

  # https://www.postgresql.org/support/versioning/
  deprecate! date: "2024-11-14", because: :unsupported

  depends_on "pkg-config" => :build
  depends_on "icu4c"

  # GSSAPI provided by Kerberos.framework crashes when forked.
  # See https://github.com/Homebrew/homebrew-core/issues/47494.
  depends_on "krb5"

  depends_on "openssl@1.1"
  depends_on "readline"

  uses_from_macos "libxml2"
  uses_from_macos "libxslt"
  uses_from_macos "openldap"
  uses_from_macos "perl"

  on_linux do
    depends_on "linux-pam"
    depends_on "util-linux"
  end

  def install
    ENV.delete "PKG_CONFIG_LIBDIR" if MacOS.version == :catalina
    ENV.prepend "LDFLAGS", "-L#{Formula["openssl@1.1"].opt_lib} -L#{Formula["readline"].opt_lib}"
    ENV.prepend "CPPFLAGS", "-I#{Formula["openssl@1.1"].opt_include} -I#{Formula["readline"].opt_include}"

    args = %W[
      --disable-debug
      --prefix=#{prefix}
      --datadir=#{opt_pkgshare}
      --libdir=#{opt_lib}
      --includedir=#{opt_include}
      --sysconfdir=#{etc}
      --docdir=#{doc}
      --enable-thread-safety
      --with-gssapi
      --with-icu
      --with-ldap
      --with-libxml
      --with-libxslt
      --with-openssl
      --with-pam
      --with-perl
      --with-uuid=e2fs
    ]
    if OS.mac?
      args += %w[
        --with-bonjour
        --with-tcl
      ]
    end

    # PostgreSQL by default uses xcodebuild internally to determine this,
    # which does not work on CLT-only installs.
    args << "PG_SYSROOT=#{MacOS.sdk_path}" if MacOS.sdk_root_needed?

    system "./configure", *args

    # Work around busted path magic in Makefile.global.in. This can't be specified
    # in ./configure, but needs to be set here otherwise install prefixes containing
    # the string "postgres" will get an incorrect pkglibdir.
    # See https://github.com/Homebrew/homebrew-core/issues/62930#issuecomment-709411789
    system "make", "pkglibdir=#{lib}/postgresql"
    system "make", "install-world", "datadir=#{pkgshare}",
                                    "libdir=#{lib}",
                                    "pkglibdir=#{lib}/postgresql",
                                    "includedir=#{include}",
                                    "pkgincludedir=#{include}/postgresql",
                                    "includedir_server=#{include}/postgresql/server",
                                    "includedir_internal=#{include}/postgresql/internal"

    if OS.linux?
      inreplace lib/"postgresql/pgxs/src/Makefile.global",
                "LD = #{HOMEBREW_PREFIX}/Homebrew/Library/Homebrew/shims/linux/super/ld",
                "LD = #{HOMEBREW_PREFIX}/bin/ld"
    end
  end

  def post_install
    (var/"log").mkpath
    postgresql_datadir.mkpath

    # Don't initialize database, it clashes when testing other PostgreSQL versions.
    return if ENV["HOMEBREW_GITHUB_ACTIONS"]

    system "#{bin}/initdb", "--locale=C", "-E", "UTF-8", postgresql_datadir unless pg_version_exists?
  end

  def postgresql_datadir
    var/name
  end

  def postgresql_log_path
    var/"log/#{name}.log"
  end

  def pg_version_exists?
    (postgresql_datadir/"PG_VERSION").exist?
  end

  def old_postgres_data_dir
    var/"postgres"
  end

  # Figure out what version of PostgreSQL the old data dir is
  # using
  def old_postgresql_datadir_version
    pg_version = old_postgres_data_dir/"PG_VERSION"
    pg_version.exist? && pg_version.read.chomp
  end

  def caveats
    caveats = ""

    # Extract the version from the formula name
    pg_formula_version = version.major.to_s
    # ... and check it against the old data dir postgres version number
    # to see if we need to print a warning re: data dir
    if old_postgresql_datadir_version == pg_formula_version
      caveats += <<~EOS
        Previous versions of postgresql shared the same data directory.

        You can migrate to a versioned data directory by running:
          mv -v "#{old_postgres_data_dir}" "#{postgresql_datadir}"

        (Make sure PostgreSQL is stopped before executing this command)

      EOS
    end

    caveats += <<~EOS
      This formula has created a default database cluster with:
        initdb --locale=C -E UTF-8 #{postgresql_datadir}
      For more details, read:
        https://www.postgresql.org/docs/#{version.major}/app-initdb.html
    EOS

    caveats
  end

  service do
    run [opt_bin/"postgres", "-D", f.postgresql_datadir]
    keep_alive true
    log_path f.postgresql_log_path
    error_log_path f.postgresql_log_path
    working_dir HOMEBREW_PREFIX
  end

  test do
    system "#{bin}/initdb", testpath/"test" unless ENV["HOMEBREW_GITHUB_ACTIONS"]
    assert_equal opt_pkgshare.to_s, shell_output("#{bin}/pg_config --sharedir").chomp
    assert_equal opt_lib.to_s, shell_output("#{bin}/pg_config --libdir").chomp
    assert_equal "#{lib}/postgresql", shell_output("#{bin}/pg_config --pkglibdir").chomp
  end
end