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diff --git a/lib/open_api_spex/operation.ex b/lib/open_api_spex/operation.ex
index 44e6f73..1f572b9 100644
--- a/lib/open_api_spex/operation.ex
+++ b/lib/open_api_spex/operation.ex
@@ -1,244 +1,292 @@
defmodule OpenApiSpex.Operation do
@moduledoc """
Defines the `OpenApiSpex.Operation.t` type.
"""
alias OpenApiSpex.{
Callback,
ExternalDocumentation,
MediaType,
Operation,
Parameter,
Reference,
RequestBody,
Response,
Responses,
Schema,
SecurityRequirement,
Server
}
@enforce_keys :responses
defstruct tags: [],
summary: nil,
description: nil,
externalDocs: nil,
operationId: nil,
parameters: [],
requestBody: nil,
responses: nil,
callbacks: %{},
deprecated: false,
security: nil,
servers: nil
@typedoc """
[Operation Object](https://swagger.io/specification/#operationObject)
Describes a single API operation on a path.
"""
@type t :: %__MODULE__{
tags: [String.t()],
summary: String.t() | nil,
description: String.t() | nil,
externalDocs: ExternalDocumentation.t() | nil,
operationId: String.t() | nil,
parameters: [Parameter.t() | Reference.t()],
requestBody: RequestBody.t() | Reference.t() | nil,
responses: Responses.t(),
callbacks: %{String.t() => Callback.t() | Reference.t()},
deprecated: boolean,
security: [SecurityRequirement.t()] | nil,
servers: [Server.t()] | nil
}
@doc """
Constructs an Operation struct from the plug and opts specified in the given route
"""
@spec from_route(PathItem.route()) :: t | nil
def from_route(route)
def from_route(route = %_{}) do
route
|> Map.from_struct()
|> from_route()
end
def from_route(%{plug: plug, plug_opts: opts}) do
from_plug(plug, opts)
end
def from_route(%{plug: plug, opts: opts}) do
from_plug(plug, opts)
end
@doc """
Constructs an Operation struct from plug module and opts
"""
- @spec from_plug(module, any) :: t | nil
+ @spec from_plug(module, opts :: any) :: t | nil
def from_plug(plug, opts) do
plug.open_api_operation(opts)
end
@doc """
Shorthand for constructing an `OpenApiSpex.Parameter` given name, location, type, description and optional examples
"""
@spec parameter(
name :: atom,
location :: Parameter.location(),
type :: Reference.t() | Schema.t() | atom,
description :: String.t(),
opts :: keyword
) :: Parameter.t()
def parameter(name, location, type, description, opts \\ [])
when is_atom(name) and
is_atom(location) and
(is_map(type) or is_atom(type)) and
is_binary(description) and
is_list(opts) do
params =
[name: name, in: location, description: description, required: location == :path]
|> Keyword.merge(opts)
Parameter
|> struct!(params)
|> Parameter.put_schema(type)
end
@doc """
Shorthand for constructing a RequestBody with description, media_type, schema and optional examples
"""
- @spec request_body(String.t, String.t, (Schema.t | Reference.t | module), keyword) :: RequestBody.t
+ @spec request_body(
+ description :: String.t(),
+ media_type :: String.t(),
+ schema_ref :: Schema.t() | Reference.t() | module,
+ opts :: keyword
+ ) :: RequestBody.t()
def request_body(description, media_type, schema_ref, opts \\ []) do
%RequestBody{
description: description,
content: %{
media_type => %MediaType{
schema: schema_ref,
example: opts[:example],
examples: opts[:examples]
}
},
required: opts[:required] || false
}
end
@doc """
Shorthand for constructing a Response with description, media_type, schema and optional examples
"""
- @spec response(String.t, String.t, (Schema.t | Reference.t | module), keyword) :: Response.t
+ @spec response(
+ description :: String.t(),
+ media_type :: String.t(),
+ schema_ref :: Schema.t() | Reference.t() | module,
+ opts :: keyword
+ ) :: Response.t()
def response(description, media_type, schema_ref, opts \\ []) do
%Response{
description: description,
content: %{
- media_type => %MediaType {
+ media_type => %MediaType{
schema: schema_ref,
example: opts[:example],
examples: opts[:examples]
}
}
}
end
@doc """
Cast params to the types defined by the schemas of the operation parameters and requestBody
"""
- @spec cast(Operation.t, Conn.t, String.t | nil, %{String.t => Schema.t}) :: {:ok, Plug.Conn.t} | {:error, String.t}
+ @spec cast(
+ Operation.t(),
+ Conn.t(),
+ content_type :: String.t() | nil,
+ schemas :: %{String.t() => Schema.t()}
+ ) :: {:ok, Plug.Conn.t()} | {:error, String.t()}
def cast(operation = %Operation{}, conn = %Plug.Conn{}, content_type, schemas) do
- parameters = Enum.filter(operation.parameters || [], fn p -> Map.has_key?(conn.params, Atom.to_string(p.name)) end)
+ parameters =
+ Enum.filter(operation.parameters || [], fn p ->
+ Map.has_key?(conn.params, Atom.to_string(p.name))
+ end)
+
with :ok <- check_query_params_defined(conn, operation.parameters),
{:ok, parameter_values} <- cast_parameters(parameters, conn.params, schemas),
- {:ok, body} <- cast_request_body(operation.requestBody, conn.body_params, content_type, schemas) do
+ {:ok, body} <-
+ cast_request_body(operation.requestBody, conn.body_params, content_type, schemas) do
{:ok, %{conn | params: parameter_values, body_params: body}}
end
end
- @spec check_query_params_defined(Conn.t, list | nil) :: :ok | {:error, String.t}
- defp check_query_params_defined(%Plug.Conn{} = conn, defined_params) when is_nil(defined_params) do
+ @spec check_query_params_defined(Conn.t(), list | nil) :: :ok | {:error, String.t()}
+ defp check_query_params_defined(%Plug.Conn{} = conn, defined_params)
+ when is_nil(defined_params) do
case conn.query_params do
%{} -> :ok
_ -> {:error, "No query parameters defined for this operation"}
end
end
- defp check_query_params_defined(%Plug.Conn{} = conn, defined_params) when is_list(defined_params) do
- defined_query_params = for param <- defined_params, param.in == :query, into: MapSet.new(), do: to_string(param.name)
+
+ defp check_query_params_defined(%Plug.Conn{} = conn, defined_params)
+ when is_list(defined_params) do
+ defined_query_params =
+ for param <- defined_params,
+ param.in == :query,
+ into: MapSet.new(),
+ do: to_string(param.name)
+
case validate_parameter_keys(Map.keys(conn.query_params), defined_query_params) do
{:error, param} -> {:error, "Undefined query parameter: #{inspect(param)}"}
:ok -> :ok
end
end
- @spec validate_parameter_keys([String.t], MapSet.t) :: {:error, String.t} | :ok
+ @spec validate_parameter_keys([String.t()], MapSet.t()) :: {:error, String.t()} | :ok
defp validate_parameter_keys([], _defined_params), do: :ok
- defp validate_parameter_keys([param|params], defined_params) do
+
+ defp validate_parameter_keys([param | params], defined_params) do
case MapSet.member?(defined_params, param) do
false -> {:error, param}
_ -> validate_parameter_keys(params, defined_params)
end
end
- @spec cast_parameters([Parameter.t], map, %{String.t => Schema.t}) :: {:ok, map} | {:error, String.t}
+ @spec cast_parameters([Parameter.t()], map, %{String.t() => Schema.t()}) ::
+ {:ok, map} | {:error, String.t()}
defp cast_parameters([], _params, _schemas), do: {:ok, %{}}
+
defp cast_parameters([p | rest], params = %{}, schemas) do
- with {:ok, cast_val} <- Schema.cast(Parameter.schema(p), params[Atom.to_string(p.name)], schemas),
+ with {:ok, cast_val} <-
+ Schema.cast(Parameter.schema(p), params[Atom.to_string(p.name)], schemas),
{:ok, cast_tail} <- cast_parameters(rest, params, schemas) do
{:ok, Map.put_new(cast_tail, p.name, cast_val)}
end
end
- @spec cast_request_body(RequestBody.t | nil, map, String.t | nil, %{String.t => Schema.t}) :: {:ok, map} | {:error, String.t}
+ @spec cast_request_body(RequestBody.t() | nil, map, String.t() | nil, %{
+ String.t() => Schema.t()
+ }) :: {:ok, map} | {:error, String.t()}
defp cast_request_body(nil, _, _, _), do: {:ok, %{}}
+
defp cast_request_body(%RequestBody{content: content}, params, content_type, schemas) do
schema = content[content_type].schema
Schema.cast(schema, params, schemas)
end
@doc """
Validate params against the schemas of the operation parameters and requestBody
"""
- @spec validate(Operation.t, Conn.t, String.t | nil, %{String.t => Schema.t}) :: :ok | {:error, String.t}
+ @spec validate(Operation.t(), Conn.t(), String.t() | nil, %{String.t() => Schema.t()}) ::
+ :ok | {:error, String.t()}
def validate(operation = %Operation{}, conn = %Plug.Conn{}, content_type, schemas) do
with :ok <- validate_required_parameters(operation.parameters || [], conn.params),
- parameters <- Enum.filter(operation.parameters || [], &Map.has_key?(conn.params, &1.name)),
+ parameters <-
+ Enum.filter(operation.parameters || [], &Map.has_key?(conn.params, &1.name)),
:ok <- validate_parameter_schemas(parameters, conn.params, schemas),
- :ok <- validate_body_schema(operation.requestBody, conn.body_params, content_type, schemas) do
+ :ok <-
+ validate_body_schema(operation.requestBody, conn.body_params, content_type, schemas) do
:ok
end
end
- @spec validate_required_parameters([Parameter.t], map) :: :ok | {:error, String.t}
+ @spec validate_required_parameters([Parameter.t()], map) :: :ok | {:error, String.t()}
defp validate_required_parameters(parameter_list, params = %{}) do
required =
parameter_list
|> Stream.filter(fn parameter -> parameter.required end)
|> Enum.map(fn parameter -> parameter.name end)
missing = required -- Map.keys(params)
+
case missing do
[] -> :ok
_ -> {:error, "Missing required parameters: #{inspect(missing)}"}
end
end
@spec validate_parameter_schemas([Parameter.t()], map, %{String.t() => Schema.t()}) ::
:ok | {:error, String.t()}
defp validate_parameter_schemas([], %{} = _params, _schemas), do: :ok
defp validate_parameter_schemas([p | rest], %{} = params, schemas) do
{:ok, parameter_value} = Map.fetch(params, p.name)
+
with :ok <- Schema.validate(Parameter.schema(p), parameter_value, schemas) do
validate_parameter_schemas(rest, params, schemas)
end
end
- @spec validate_body_schema(RequestBody.t | nil, map, String.t | nil, %{String.t => Schema.t}) :: :ok | {:error, String.t}
+ @spec validate_body_schema(
+ RequestBody.t() | nil,
+ params :: map,
+ content_type :: String.t() | nil,
+ schemas :: %{String.t() => Schema.t()}
+ ) :: :ok | {:error, String.t()}
defp validate_body_schema(nil, _, _, _), do: :ok
- defp validate_body_schema(%RequestBody{required: false}, params, _content_type, _schemas) when map_size(params) == 0 do
+
+ defp validate_body_schema(%RequestBody{required: false}, params, _content_type, _schemas)
+ when map_size(params) == 0 do
:ok
end
+
defp validate_body_schema(%RequestBody{content: content}, params, content_type, schemas) do
content
|> Map.get(content_type)
|> Map.get(:schema)
|> Schema.validate(params, schemas)
end
end

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