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Merge pull request #6915 from thalesmg/cleanup-mix-release-file 

chore: delete unused file
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Thales Macedo Garitezi 2022-02-04 09:03:08 -03:00 committed by GitHub
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lib/mix/release.exs
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@ -1,878 +0,0 @@
defmodule Mix.Release do
@moduledoc """
Defines the release structure and convenience for assembling releases.
"""
@doc """
The Mix.Release struct has the following read-only fields:
* `:name` - the name of the release as an atom
* `:version` - the version of the release as a string or
`{:from_app, app_name}`
* `:path` - the path to the release root
* `:version_path` - the path to the release version inside the release
* `:applications` - a map of application with their definitions
* `:erts_source` - the ERTS source as a charlist (or nil)
* `:erts_version` - the ERTS version as a charlist
The following fields may be modified as long as they keep their defined types:
* `:boot_scripts` - a map of boot scripts with the boot script name
as key and a keyword list with **all** applications that are part of
it and their modes as value
* `:config_providers` - a list of `{config_provider, term}` tuples where the
first element is a module that implements the `Config.Provider` behaviour
and `term` is the value given to it on `c:Config.Provider.init/1`
* `:options` - a keyword list with all other user supplied release options
* `:overlays` - a list of extra files added to the release. If you have a custom
step adding extra files to a release, you can add these files to the `:overlays`
field so they are also considered on further commands, such as tar/zip. Each entry
in overlays is the relative path to the release root of each file
* `:steps` - a list of functions that receive the release and returns a release.
Must also contain the atom `:assemble` which is the internal assembling step.
May also contain the atom `:tar` to create a tarball of the release.
"""
defstruct [
:name,
:version,
:path,
:version_path,
:applications,
:boot_scripts,
:erts_source,
:erts_version,
:config_providers,
:options,
:overlays,
:steps
]
@type mode :: :permanent | :transient | :temporary | :load | :none
@type application :: atom()
@type t :: %__MODULE__{
name: atom(),
version: String.t(),
path: String.t(),
version_path: String.t() | {:from_app, application()},
applications: %{application() => keyword()},
boot_scripts: %{atom() => [{application(), mode()}]},
erts_version: charlist(),
erts_source: charlist() | nil,
config_providers: [{module, term}],
options: keyword(),
overlays: list(String.t()),
steps: [(t -> t) | :assemble, ...]
}
@default_apps [kernel: :permanent, stdlib: :permanent, elixir: :permanent, sasl: :permanent]
@safe_modes [:permanent, :temporary, :transient]
@unsafe_modes [:load, :none]
@significant_chunks ~w(Atom AtU8 Attr Code StrT ImpT ExpT FunT LitT Line)c
@copy_app_dirs ["priv"]
@doc false
@spec from_config!(atom, keyword, keyword) :: t
def from_config!(name, config, overrides) do
{name, apps, opts} = find_release(name, config)
unless Atom.to_string(name) =~ ~r/^[a-z][a-z0-9_]*$/ do
Mix.raise(
"Invalid release name. A release name must start with a lowercase ASCII letter, " <>
"followed by lowercase ASCII letters, numbers, or underscores, got: #{inspect(name)}"
)
end
opts =
[overwrite: false, quiet: false, strip_beams: true]
|> Keyword.merge(opts)
|> Keyword.merge(overrides)
{include_erts, opts} = Keyword.pop(opts, :include_erts, true)
{erts_source, erts_lib_dir, erts_version} = erts_data(include_erts)
deps_apps = Mix.Project.deps_apps()
loaded_apps = apps |> Keyword.keys() |> load_apps(deps_apps, %{}, erts_lib_dir, [], :root)
# Make sure IEx is either an active part of the release or add it as none.
{loaded_apps, apps} =
if Map.has_key?(loaded_apps, :iex) do
{loaded_apps, apps}
else
{load_apps([:iex], deps_apps, loaded_apps, erts_lib_dir, [], :root), apps ++ [iex: :none]}
end
start_boot = build_start_boot(loaded_apps, apps)
start_clean_boot = build_start_clean_boot(start_boot)
{path, opts} =
Keyword.pop_lazy(opts, :path, fn ->
Path.join([Mix.Project.build_path(config), "rel", Atom.to_string(name)])
end)
path = Path.absname(path)
{version, opts} =
Keyword.pop_lazy(opts, :version, fn ->
config[:version] ||
Mix.raise(
"No :version found. Please make sure a :version is set in your project definition " <>
"or inside the release the configuration"
)
end)
version =
case version do
{:from_app, app} ->
Application.load(app)
version = Application.spec(app, :vsn)
if !version do
Mix.raise(
"Could not find version for #{inspect(app)}, please make sure the application exists"
)
end
to_string(version)
"" ->
Mix.raise("The release :version cannot be an empty string")
_ ->
version
end
{config_providers, opts} = Keyword.pop(opts, :config_providers, [])
{steps, opts} = Keyword.pop(opts, :steps, [:assemble])
validate_steps!(steps)
%Mix.Release{
name: name,
version: version,
path: path,
version_path: Path.join([path, "releases", version]),
erts_source: erts_source,
erts_version: erts_version,
applications: loaded_apps,
boot_scripts: %{start: start_boot, start_clean: start_clean_boot},
config_providers: config_providers,
options: opts,
overlays: [],
steps: steps
}
end
defp find_release(name, config) do
{name, opts_fun_or_list} = lookup_release(name, config) || infer_release(config)
opts = if is_function(opts_fun_or_list, 0), do: opts_fun_or_list.(), else: opts_fun_or_list
{apps, opts} = Keyword.pop(opts, :applications, [])
if apps == [] and Mix.Project.umbrella?(config) do
bad_umbrella!()
end
app = Keyword.get(config, :app)
apps = Keyword.merge(@default_apps, apps)
if is_nil(app) or Keyword.has_key?(apps, app) do
{name, apps, opts}
else
{name, apps ++ [{app, :permanent}], opts}
end
end
defp lookup_release(nil, config) do
case Keyword.get(config, :releases, []) do
[] ->
nil
[{name, opts}] ->
{name, opts}
[_ | _] ->
case Keyword.get(config, :default_release) do
nil ->
Mix.raise(
"\"mix release\" was invoked without a name but there are multiple releases. " <>
"Please call \"mix release NAME\" or set :default_release in your project configuration"
)
name ->
lookup_release(name, config)
end
end
end
defp lookup_release(name, config) do
if opts = config[:releases][name] do
{name, opts}
else
found = Keyword.get(config, :releases, [])
Mix.raise(
"Unknown release #{inspect(name)}. " <>
"The available releases are: #{inspect(Keyword.keys(found))}"
)
end
end
defp infer_release(config) do
if Mix.Project.umbrella?(config) do
bad_umbrella!()
else
{Keyword.fetch!(config, :app), []}
end
end
defp bad_umbrella! do
Mix.raise("""
Umbrella projects require releases to be explicitly defined with \
a non-empty applications key that chooses which umbrella children \
should be part of the releases:
releases: [
foo: [
applications: [child_app_foo: :permanent]
],
bar: [
applications: [child_app_bar: :permanent]
]
]
Alternatively you can perform the release from the children applications
""")
end
defp erts_data(erts_data) when is_function(erts_data) do
erts_data(erts_data.())
end
defp erts_data(false) do
{nil, :code.lib_dir(), :erlang.system_info(:version)}
end
defp erts_data(true) do
version = :erlang.system_info(:version)
{:filename.join(:code.root_dir(), 'erts-#{version}'), :code.lib_dir(), version}
end
defp erts_data(erts_source) when is_binary(erts_source) do
if File.exists?(erts_source) do
[_, erts_version] = erts_source |> Path.basename() |> String.split("-")
erts_lib_dir = erts_source |> Path.dirname() |> Path.join("lib") |> to_charlist()
{to_charlist(erts_source), erts_lib_dir, to_charlist(erts_version)}
else
Mix.raise("Could not find ERTS system at #{inspect(erts_source)}")
end
end
defp load_apps(apps, deps_apps, seen, otp_root, optional, type) do
for app <- apps, reduce: seen do
seen ->
if reentrant_seen = reentrant(seen, app, type) do
reentrant_seen
else
load_app(app, deps_apps, seen, otp_root, optional, type)
end
end
end
defp reentrant(seen, app, type) do
properties = seen[app]
cond do
is_nil(properties) ->
nil
type != :root and properties[:type] != type ->
if properties[:type] == :root do
put_in(seen[app][:type], type)
else
Mix.raise(
"#{inspect(app)} is listed both as a regular application and as an included application"
)
end
true ->
seen
end
end
defp load_app(app, deps_apps, seen, otp_root, optional, type) do
cond do
path = app not in deps_apps && otp_path(otp_root, app) ->
do_load_app(app, path, deps_apps, seen, otp_root, true, type)
path = code_path(app) ->
do_load_app(app, path, deps_apps, seen, otp_root, false, type)
app in optional ->
seen
true ->
Mix.raise("Could not find application #{inspect(app)}")
end
end
defp otp_path(otp_root, app) do
path = Path.join(otp_root, "#{app}-*")
case Path.wildcard(path) do
[] -> nil
paths -> paths |> Enum.sort() |> List.last() |> to_charlist()
end
end
defp code_path(app) do
case :code.lib_dir(app) do
{:error, :bad_name} -> nil
path -> path
end
end
defp do_load_app(app, path, deps_apps, seen, otp_root, otp_app?, type) do
case :file.consult(Path.join(path, "ebin/#{app}.app")) do
{:ok, terms} ->
[{:application, ^app, properties}] = terms
value = [path: path, otp_app?: otp_app?, type: type] ++ properties
seen = Map.put(seen, app, value)
applications = Keyword.get(properties, :applications, [])
optional = Keyword.get(properties, :optional_applications, [])
seen = load_apps(applications, deps_apps, seen, otp_root, optional, :depended)
included_applications = Keyword.get(properties, :included_applications, [])
load_apps(included_applications, deps_apps, seen, otp_root, [], :included)
{:error, reason} ->
Mix.raise("Could not load #{app}.app. Reason: #{inspect(reason)}")
end
end
defp build_start_boot(all_apps, specified_apps) do
specified_apps ++
Enum.sort(
for(
{app, props} <- all_apps,
not List.keymember?(specified_apps, app, 0),
do: {app, default_mode(props)}
)
)
end
defp default_mode(props) do
if props[:type] == :included, do: :load, else: :permanent
end
defp build_start_clean_boot(boot) do
for({app, _mode} <- boot, do: {app, :none})
|> Keyword.put(:stdlib, :permanent)
|> Keyword.put(:kernel, :permanent)
end
defp validate_steps!(steps) do
valid_atoms = [:assemble, :tar]
if not is_list(steps) or Enum.any?(steps, &(&1 not in valid_atoms and not is_function(&1, 1))) do
Mix.raise("""
The :steps option must be a list of:
* anonymous function that receives one argument
* the atom :assemble or :tar
Got: #{inspect(steps)}
""")
end
if Enum.count(steps, &(&1 == :assemble)) != 1 do
Mix.raise("The :steps option must contain the atom :assemble once, got: #{inspect(steps)}")
end
if :assemble in Enum.drop_while(steps, &(&1 != :tar)) do
Mix.raise("The :tar step must come after :assemble")
end
if Enum.count(steps, &(&1 == :tar)) > 1 do
Mix.raise("The :steps option can only contain the atom :tar once")
end
:ok
end
@doc """
Makes the `sys.config` structure.
If there are config providers, then a value is injected into
the `:elixir` application configuration in `sys_config` to be
read during boot and trigger the providers.
It uses the following release options to customize its behaviour:
* `:reboot_system_after_config`
* `:start_distribution_during_config`
* `:prune_runtime_sys_config_after_boot`
In case there are no config providers, it doesn't change `sys_config`.
"""
@spec make_sys_config(t, keyword(), Config.Provider.config_path()) ::
:ok | {:error, String.t()}
def make_sys_config(release, sys_config, config_provider_path) do
{sys_config, runtime_config?} =
merge_provider_config(release, sys_config, config_provider_path)
path = Path.join(release.version_path, "sys.config")
args = [runtime_config?, sys_config]
format = "%% coding: utf-8~n%% RUNTIME_CONFIG=~s~n~tw.~n"
File.mkdir_p!(Path.dirname(path))
File.write!(path, IO.chardata_to_string(:io_lib.format(format, args)))
case :file.consult(path) do
{:ok, _} ->
:ok
{:error, reason} ->
invalid =
for {app, kv} <- sys_config,
{key, value} <- kv,
not valid_config?(value),
do: """
Application: #{inspect(app)}
Key: #{inspect(key)}
Value: #{inspect(value)}
"""
message =
case invalid do
[] ->
"Could not read configuration file. Reason: #{inspect(reason)}"
_ ->
"Could not read configuration file. It has invalid configuration terms " <>
"such as functions, references, and pids. Please make sure your configuration " <>
"is made of numbers, atoms, strings, maps, tuples and lists. The following entries " <>
"are wrong:\n#{Enum.join(invalid)}"
end
{:error, message}
end
end
defp valid_config?(m) when is_map(m),
do: Enum.all?(Map.delete(m, :__struct__), &valid_config?/1)
defp valid_config?(l) when is_list(l), do: Enum.all?(l, &valid_config?/1)
defp valid_config?(t) when is_tuple(t), do: Enum.all?(Tuple.to_list(t), &valid_config?/1)
defp valid_config?(o), do: is_number(o) or is_atom(o) or is_binary(o)
defp merge_provider_config(%{config_providers: []}, sys_config, _), do: {sys_config, false}
defp merge_provider_config(release, sys_config, config_path) do
{reboot?, extra_config, initial_config} = start_distribution(release)
prune_runtime_sys_config_after_boot =
Keyword.get(release.options, :prune_runtime_sys_config_after_boot, false)
opts = [
extra_config: initial_config,
prune_runtime_sys_config_after_boot: prune_runtime_sys_config_after_boot,
reboot_system_after_config: reboot?,
validate_compile_env: validate_compile_env(release)
]
init_config = Config.Provider.init(release.config_providers, config_path, opts)
{Config.Reader.merge(sys_config, init_config ++ extra_config), reboot?}
end
defp validate_compile_env(release) do
with true <- Keyword.get(release.options, :validate_compile_env, true),
[_ | _] = compile_env <- compile_env(release) do
compile_env
else
_ -> false
end
end
defp compile_env(release) do
for {_, properties} <- release.applications,
triplet <- Keyword.get(properties, :compile_env, []),
do: triplet
end
defp start_distribution(%{options: opts}) do
reboot? = Keyword.get(opts, :reboot_system_after_config, false)
early_distribution? = Keyword.get(opts, :start_distribution_during_config, false)
if not reboot? or early_distribution? do
{reboot?, [], []}
else
{true, [kernel: [start_distribution: false]], [kernel: [start_distribution: true]]}
end
end
@doc """
Copies the cookie to the given path.
If a cookie option was given, we compare it with
the contents of the file (if any), and ask the user
if they want to override.
If there is no option, we generate a random one
the first time.
"""
@spec make_cookie(t, Path.t()) :: :ok
def make_cookie(release, path) do
cond do
cookie = release.options[:cookie] ->
Mix.Generator.create_file(path, cookie, quiet: true)
:ok
File.exists?(path) ->
:ok
true ->
File.write!(path, random_cookie())
:ok
end
end
defp random_cookie, do: Base.encode32(:crypto.strong_rand_bytes(32))
@doc """
Makes the start_erl.data file with the
ERTS version and release versions.
"""
@spec make_start_erl(t, Path.t()) :: :ok
def make_start_erl(release, path) do
File.write!(path, "#{release.erts_version} #{release.version}")
:ok
end
@doc """
Makes boot scripts.
It receives a path to the boot file, without extension, such as
`releases/0.1.0/start` and this command will write `start.rel`,
`start.boot`, and `start.script` to the given path, returning
`{:ok, rel_path}` or `{:error, message}`.
The boot script uses the RELEASE_LIB environment variable, which must
be accordingly set with `--boot-var` and point to the release lib dir.
"""
@spec make_boot_script(t, Path.t(), [{application(), mode()}], [String.t()]) ::
:ok | {:error, String.t()}
def make_boot_script(release, path, modes, prepend_paths \\ []) do
with {:ok, rel_spec} <- build_release_spec(release, modes) do
File.write!(path <> ".rel", consultable(rel_spec))
sys_path = String.to_charlist(path)
sys_options = [
:silent,
:no_dot_erlang,
:no_warn_sasl,
variables: build_variables(release),
path: build_paths(release)
]
case :systools.make_script(sys_path, sys_options) do
{:ok, _module, _warnings} ->
script_path = sys_path ++ '.script'
{:ok, [{:script, rel_info, instructions}]} = :file.consult(script_path)
instructions =
instructions
|> post_stdlib_applies(release)
|> prepend_paths_to_script(prepend_paths)
script = {:script, rel_info, instructions}
File.write!(script_path, consultable(script))
:ok = :systools.script2boot(sys_path)
{:error, module, info} ->
message = module.format_error(info) |> to_string() |> String.trim()
{:error, message}
end
end
end
defp build_variables(release) do
for {_, properties} <- release.applications,
not Keyword.fetch!(properties, :otp_app?),
uniq: true,
do: {'RELEASE_LIB', properties |> Keyword.fetch!(:path) |> :filename.dirname()}
end
defp build_paths(release) do
for {_, properties} <- release.applications,
Keyword.fetch!(properties, :otp_app?),
do: properties |> Keyword.fetch!(:path) |> Path.join("ebin") |> to_charlist()
end
defp build_release_spec(release, modes) do
%{
name: name,
version: version,
erts_version: erts_version,
applications: apps,
options: options
} = release
skip_mode_validation_for =
options
|> Keyword.get(:skip_mode_validation_for, [])
|> MapSet.new()
rel_apps =
for {app, mode} <- modes do
properties = Map.get(apps, app) || throw({:error, "Unknown application #{inspect(app)}"})
children = Keyword.get(properties, :applications, [])
app in skip_mode_validation_for || validate_mode!(app, mode, modes, children)
build_app_for_release(app, mode, properties)
end
{:ok, {:release, {to_charlist(name), to_charlist(version)}, {:erts, erts_version}, rel_apps}}
catch
{:error, message} -> {:error, message}
end
defp validate_mode!(app, mode, modes, children) do
safe_mode? = mode in @safe_modes
if not safe_mode? and mode not in @unsafe_modes do
throw(
{:error,
"Unknown mode #{inspect(mode)} for #{inspect(app)}. " <>
"Valid modes are: #{inspect(@safe_modes ++ @unsafe_modes)}"}
)
end
for child <- children do
child_mode = Keyword.get(modes, child)
cond do
is_nil(child_mode) ->
throw(
{:error,
"Application #{inspect(app)} is listed in the release boot, " <>
"but it depends on #{inspect(child)}, which isn't"}
)
safe_mode? and child_mode in @unsafe_modes ->
throw(
{:error,
"""
Application #{inspect(app)} has mode #{inspect(mode)} but it depends on \
#{inspect(child)} which is set to #{inspect(child_mode)}. If you really want \
to set such mode for #{inspect(child)} make sure that all applications that depend \
on it are also set to :load or :none, otherwise your release will fail to boot
"""}
)
true ->
:ok
end
end
end
defp build_app_for_release(app, mode, properties) do
vsn = Keyword.fetch!(properties, :vsn)
case Keyword.get(properties, :included_applications, []) do
[] -> {app, vsn, mode}
included_apps -> {app, vsn, mode, included_apps}
end
end
defp post_stdlib_applies(instructions, release) do
{pre, [stdlib | post]} =
Enum.split_while(
instructions,
&(not match?({:apply, {:application, :start_boot, [:stdlib, _]}}, &1))
)
pre ++ [stdlib] ++ config_provider_apply(release) ++ post
end
defp config_provider_apply(%{config_providers: []}),
do: []
defp config_provider_apply(_),
do: [{:apply, {Config.Provider, :boot, []}}]
defp prepend_paths_to_script(instructions, []), do: instructions
defp prepend_paths_to_script(instructions, prepend_paths) do
prepend_paths = Enum.map(prepend_paths, &String.to_charlist/1)
Enum.map(instructions, fn
{:path, paths} ->
if Enum.any?(paths, &List.starts_with?(&1, '$RELEASE_LIB')) do
{:path, prepend_paths ++ paths}
else
{:path, paths}
end
other ->
other
end)
end
defp consultable(term) do
IO.chardata_to_string(:io_lib.format("%% coding: utf-8~n~tp.~n", [term]))
end
@doc """
Finds a template path for the release.
"""
def rel_templates_path(release, path) do
Path.join(release.options[:rel_templates_path] || "rel", path)
end
@doc """
Copies ERTS if the release is configured to do so.
Returns true if the release was copied, false otherwise.
"""
@spec copy_erts(t) :: boolean()
def copy_erts(%{erts_source: nil}) do
false
end
def copy_erts(release) do
destination = Path.join(release.path, "erts-#{release.erts_version}/bin")
File.mkdir_p!(destination)
release.erts_source
|> Path.join("bin")
|> File.cp_r!(destination, fn _, _ -> false end)
_ = File.rm(Path.join(destination, "erl"))
_ = File.rm(Path.join(destination, "erl.ini"))
destination
|> Path.join("erl")
|> File.write!(~S"""
#!/bin/sh
SELF=$(readlink "$0" || true)
if [ -z "$SELF" ]; then SELF="$0"; fi
BINDIR="$(cd "$(dirname "$SELF")" && pwd -P)"
ROOTDIR="${ERL_ROOTDIR:-"$(dirname "$(dirname "$BINDIR")")"}"
EMU=beam
PROGNAME=$(echo "$0" | sed 's/.*\///')
export EMU
export ROOTDIR
export BINDIR
export PROGNAME
exec "$BINDIR/erlexec" ${1+"$@"}
""")
File.chmod!(Path.join(destination, "erl"), 0o755)
true
end
@doc """
Copies the given application specification into the release.
It assumes the application exists in the release.
"""
@spec copy_app(t, application) :: boolean()
def copy_app(release, app) do
properties = Map.fetch!(release.applications, app)
vsn = Keyword.fetch!(properties, :vsn)
source_app = Keyword.fetch!(properties, :path)
target_app = Path.join([release.path, "lib", "#{app}-#{vsn}"])
if is_nil(release.erts_source) and Keyword.fetch!(properties, :otp_app?) do
false
else
File.rm_rf!(target_app)
File.mkdir_p!(target_app)
copy_ebin(release, Path.join(source_app, "ebin"), Path.join(target_app, "ebin"))
for dir <- @copy_app_dirs do
source_dir = Path.join(source_app, dir)
target_dir = Path.join(target_app, dir)
source_dir =
case File.read_link(source_dir) do
{:ok, link_target} -> Path.expand(link_target, source_app)
_ -> source_dir
end
File.exists?(source_dir) && File.cp_r!(source_dir, target_dir)
end
true
end
end
@doc """
Copies the ebin directory at `source` to `target`
respecting release options such a `:strip_beams`.
"""
@spec copy_ebin(t, Path.t(), Path.t()) :: boolean()
def copy_ebin(release, source, target) do
with {:ok, [_ | _] = files} <- File.ls(source) do
File.mkdir_p!(target)
strip_options =
release.options
|> Keyword.get(:strip_beams, true)
|> parse_strip_beams_options()
for file <- files do
source_file = Path.join(source, file)
target_file = Path.join(target, file)
with true <- is_list(strip_options) and String.ends_with?(file, ".beam"),
{:ok, binary} <- strip_beam(File.read!(source_file), strip_options) do
File.write!(target_file, binary)
else
_ ->
# Use File.cp!/3 to preserve file mode for any executables stored
# in the ebin directory.
File.cp!(source_file, target_file)
end
end
true
else
_ -> false
end
end
@doc """
Strips a beam file for a release.
This keeps only significant chunks necessary for the VM operation,
discarding documentation, debug info, compile information and others.
The exact chunks that are kept are not documented and may change in
future versions.
"""
@spec strip_beam(binary(), keyword()) :: {:ok, binary()} | {:error, :beam_lib, term()}
def strip_beam(binary, options \\ []) when is_list(options) do
chunks_to_keep = options[:keep] |> List.wrap() |> Enum.map(&String.to_charlist/1)
all_chunks = Enum.uniq(@significant_chunks ++ chunks_to_keep)
case :beam_lib.chunks(binary, all_chunks, [:allow_missing_chunks]) do
{:ok, {_, chunks}} ->
chunks = for {name, chunk} <- chunks, is_binary(chunk), do: {name, chunk}
{:ok, binary} = :beam_lib.build_module(chunks)
{:ok, :zlib.gzip(binary)}
{:error, _, _} = error ->
error
end
end
defp parse_strip_beams_options(options) do
case options do
options when is_list(options) -> options
true -> []
false -> nil
end
end
end