103 lines
2.9 KiB
Ruby
Executable file
103 lines
2.9 KiB
Ruby
Executable file
#: * `postgresql-upgrade-database`:
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#: Upgrades the database for the `postgresql` formula.
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name = "postgresql"
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pg = Formula[name]
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bin = pg.bin
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var = pg.var
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version = pg.version
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pg_version_file = var/"postgres/PG_VERSION"
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pg_version_installed = version.to_s[/^\d+/]
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pg_version_data = pg_version_file.read.chomp
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if pg_version_installed == pg_version_data
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odie <<~EOS
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#{name} data already upgraded!
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EOS
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end
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datadir = var/"postgres"
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old_datadir = var/"postgres.old"
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if old_datadir.exist?
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odie <<~EOS
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#{old_datadir} already exists!
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Remove it if you want to upgrade data automatically.
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EOS
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end
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old_bin = Pathname.glob("#{HOMEBREW_PREFIX}/Cellar/#{name}{,@#{pg_version_data}}/#{pg_version_data}.*/bin").first
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old_bin ||= begin
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old_pg_name = "#{name}@#{pg_version_data}"
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Formula[old_pg_name]
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ohai "brew install #{old_pg_name}"
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system "brew", "install", old_pg_name
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Pathname.glob("#{HOMEBREW_PREFIX}/Cellar/#{old_pg_name}/#{pg_version_data}.*/bin").first
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rescue FormulaUnavailableError
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nil
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end
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odie "No #{name} #{pg_version_data}.* version installed!" unless old_bin
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server_stopped = false
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moved_data = false
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initdb_run = false
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upgraded = false
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begin
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# Following instructions from:
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# https://www.postgresql.org/docs/10/static/pgupgrade.html
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ohai "Upgrading #{name} data from #{pg_version_data} to #{pg_version_installed}..."
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if /#{name}\s+started/ =~ Utils.popen_read("brew", "services", "list")
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system "brew", "services", "stop", name
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service_stopped = true
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elsif quiet_system "#{bin}/pg_ctl", "-D", datadir, "status"
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system "#{bin}/pg_ctl", "-D", datadir, "stop"
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server_stopped = true
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end
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ohai "Moving #{name} data from #{datadir} to #{old_datadir}..."
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FileUtils.mv datadir, old_datadir
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moved_data = true
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(var/"postgres").mkpath
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system "#{bin}/initdb", "#{var}/postgres"
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initdb_run = true
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(var/"log").cd do
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system "#{bin}/pg_upgrade",
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"-r",
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"-b", old_bin,
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"-B", bin,
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"-d", old_datadir,
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"-D", datadir,
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"-j", Hardware::CPU.cores.to_s
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end
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upgraded = true
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ohai "Upgraded #{name} data from #{pg_version_data} to #{pg_version_installed}!"
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ohai "Your #{name} #{pg_version_data} data remains at #{old_datadir}"
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ensure
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if upgraded
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if server_stopped
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safe_system "#{bin}/pg_ctl", "-D", datadir, "start"
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elsif service_stopped
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safe_system "brew", "services", "start", name
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end
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else
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onoe "Upgrading #{name} data from #{pg_version_data} to #{pg_version_installed} failed!"
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if initdb_run
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ohai "Removing empty #{name} initdb database..."
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FileUtils.rm_r datadir
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end
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if moved_data
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ohai "Moving #{name} data back from #{old_datadir} to #{datadir}..."
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FileUtils.mv old_datadir, datadir
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end
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if server_stopped
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system "#{bin}/pg_ctl", "-D", datadir, "start"
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elsif service_stopped
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system "brew", "services", "start", name
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end
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end
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end
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