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Dagger SDK for Elixir
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lib/dagger/mod/object/function_def.ex
defmodule Dagger.Mod.Object.FunctionDef do
@moduledoc false
# A function declaration from `Dagger.Mod.Object.defn/2`.
@enforce_keys [:self, :args, :return]
defstruct @enforce_keys ++ [:cache_policy, :check]
@doc """
Convert a `fun_def` into Dagger Function.
"""
def to_dag_function(%__MODULE__{} = fun_def, name, module, %Dagger.Client{} = dag)
when is_atom(name) and is_atom(module) do
dag
|> Dagger.Client.function(
Dagger.Mod.Helper.camelize(name),
Dagger.Mod.Object.TypeDef.define(dag, fun_def.return)
)
|> maybe_with_description(Dagger.Mod.Object.get_function_doc(module, name))
|> maybe_with_cache_policy(Dagger.Mod.Object.get_function_cache_policy(fun_def))
|> maybe_with_deprecated(Dagger.Mod.Object.get_function_deprecated(module, name))
|> maybe_with_check(fun_def.check)
|> with_args(fun_def.args, dag)
end
@doc """
Define a Dagger Function from `fun_def`.
"""
def define(
%__MODULE__{} = fun_def,
name,
module,
%Dagger.TypeDef{} = type_def,
%Dagger.Client{} = dag
)
when is_atom(name) and is_atom(module) do
Dagger.TypeDef.with_function(type_def, to_dag_function(fun_def, name, module, dag))
end
defp maybe_with_deprecated(function, nil), do: function
defp maybe_with_deprecated(function, {:deprecated, reason}),
do: Dagger.Function.with_deprecated(function, reason: reason)
defp maybe_with_check(function, nil), do: function
defp maybe_with_check(function, true), do: Dagger.Function.with_check(function)
defp maybe_with_cache_policy(function, nil), do: function
defp maybe_with_cache_policy(function, {policy, ttl}),
do: Dagger.Function.with_cache_policy(function, policy, ttl)
defp maybe_with_cache_policy(function, policy),
do: Dagger.Function.with_cache_policy(function, policy)
defp maybe_with_description(function, nil), do: function
defp maybe_with_description(function, doc), do: Dagger.Function.with_description(function, doc)
defp with_args(fun, args, dag) do
args
|> Enum.reduce(fun, fn {name, arg_def}, fun ->
type = Keyword.fetch!(arg_def, :type)
type_def =
dag
|> Dagger.Mod.Object.TypeDef.define(type)
opts =
arg_def
|> Keyword.take([:doc, :default, :default_path, :ignore, :deprecated])
|> Enum.reject(fn {_, value} -> is_nil(value) end)
|> Enum.map(&normalize_arg_option/1)
fun
|> Dagger.Function.with_arg(name, type_def, opts)
end)
end
defp normalize_arg_option({:doc, doc}), do: {:description, doc}
defp normalize_arg_option({:default, default_value}),
do: {:default_value, Jason.encode!(default_value)}
defp normalize_arg_option({:deprecation, reason}), do: {:deprecation, reason}
defp normalize_arg_option(opt), do: opt
end