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version_tasks
0.10.21
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0.11.3
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0.11.0
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0.8.1
0.7.0
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0.3.3
0.3.1
0.2.6
A suite of mix tasks for managing your libs version numbers with git and hex
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lib/mix/tasks/bin/db.ex
defmodule Mix.Tasks.Version.Bin.Db do
use Mix.Task
@shortdoc "Create 'rel/commands' helper scripts for managing database backup / restore"
def run([]), do: run([nil, nil])
def run([backup_root]), do: run([backup_root, nil])
def run([backup_root, dbname]) do
[
"./rel/commands",
]
|> Enum.each(fn dirname ->
:ok = dirname |> Path.expand |> File.mkdir_p!
end)
appname = Mix.Project.config[:app]
default_root = "/src/#{appname}backup"
backup_root = backup_root || default_root
dbname = dbname || appname
"""
#!/bin/bash
NOW=${NOW:=$(date +"%Y%m%d%H%M%S")}
VERSION=${VERSION:=$(mix version.current)}
DBNAME=#{dbname}
BACKUP_ROOT=#{backup_root}
FNAME=${DBNAME}_${VERSION}_${NOW}
(cd ${BACKUP_ROOT} && \\
pg_dump --clean ${DBNAME} > ${FNAME}.sql && \\
tar zcf ${FNAME}.tar.gz ${FNAME}.sql && \\
ln -sf ${FNAME}.tar.gz ${DBNAME}_${VERSION}.tar.gz && \\
ln -sf ${FNAME}.tar.gz ${DBNAME}.tar.gz && \\
git add . && \\
git commit -m "Backup ${DBNAME} v${VERSION} (${NOW})" && \\
git push)
"""
|> write!("./rel/commands/backup")
"""
#!/bin/bash
DBNAME=#{dbname}
BACKUP_ROOT=#{backup_root}
(cd ${BACKUP_ROOT} && \\
psql -d ${DBNAME} -f $(tar zxfv ${DBNAME}.tar.gz))
"""
|> write!("./rel/commands/restore")
[
"./rel/commands/backup",
"./rel/commands/restore",
]
|> Enum.each(fn filename ->
:ok = filename
|> Path.expand
|> File.chmod(0o755)
end)
IO.puts "Installed the following scripts into ./rel/commands"
IO.puts " + backup \# Backup your database (named #{appname})"
IO.puts " + restore \# Restore your database (named #{appname})"
IO.puts ""
IO.puts "To enable those to be part of the release,"
IO.puts "then ensure you update your ./rel/config.exs with:"
IO.puts ""
example = """
release :#{appname} do
...
set commands: [
"backup": "rel/commands/backup"
"restore": "rel/commands/restore"
]
end
"""
IO.puts example
IO.puts ""
end
defp write!(content, relative_name) do
File.write!(relative_name |> Path.expand, content)
end
end