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Merge pull request #3763 from wing328/erlang_server_improve

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[Erlang] update readme, add petstore samples
This commit is contained in:
wing328 2016-09-09 17:04:35 +08:00 committed by GitHub
commit 8af3396a2e
19 changed files with 2683 additions and 12 deletions
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31
bin/erlang-petstore-server.sh Executable file
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@ -0,0 +1,31 @@
#!/bin/sh
SCRIPT="$0"
while [ -h "$SCRIPT" ] ; do
ls=`ls -ld "$SCRIPT"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
SCRIPT="$link"
else
SCRIPT=`dirname "$SCRIPT"`/"$link"
fi
done
if [ ! -d "${APP_DIR}" ]; then
APP_DIR=`dirname "$SCRIPT"`/..
APP_DIR=`cd "${APP_DIR}"; pwd`
fi
executable="./modules/swagger-codegen-cli/target/swagger-codegen-cli.jar"
if [ ! -f "$executable" ]
then
mvn clean package
fi
# if you've executed sbt assembly previously it will use that instead.
export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
ags="$@ generate -t modules/swagger-codegen/src/main/resources/erlang-server -i modules/swagger-codegen/src/test/resources/2_0/petstore.yaml -l erlang-server -o samples/server/petstore/erlang-server"
java $JAVA_OPTS -jar $executable $ags

17
modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/ErlangServerCodegen.java
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@ -163,8 +163,8 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
*/
@Override
public String getHelp() {
return "Generates an Erlang server library using the swagger-tools project. By default, " +
"it will also generate service classes--which you can disable with the `-Dnoservice` environment variable.";
return "Generates an Erlang server library (beta) using the Swagger Codegen project. By default, " +
"it will also generate service classes, which can be disabled with the `-Dnoservice` environment variable.";
}
@Override
@ -264,4 +264,17 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
protected String toPrivFilePath(String name, String extension) {
return "priv" + File.separator + name + "." + extension;
}
@Override
public String escapeQuotationMark(String input) {
// remove ' to avoid code injection
return input.replace("'", "");
}
@Override
public String escapeUnsafeCharacters(String input) {
// ref: http://stackoverflow.com/a/30421295/677735
return input.replace("-ifdef", "- if def").replace("-endif", "- end if");
}
}

24
modules/swagger-codegen/src/main/resources/erlang-server/README.mustache
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@ -1,12 +1,16 @@
# Swagger rest server library for Erlang
## TODO
- [ ] Write specs for static exported fuctions
- [ ] Write specs for generated exported fuctions
- [ ] Add datetime/date validation
- [ ] Separate gigantic `api` to submodules and refactor the routing
- [ ] Add tests for the validators
- [ ] Add integrational test for the whole cycle
- [ ] Add validations of definitions with inheritance
- [ ] Add proper response validation (this `list` hack is so weird)
- [ ] Fix enum validation. It doesn't work correctly when the parans is in qs/header
## Overview
An Erlang server stub generated by [Swagger Codegen](https://github.com/swagger-api/swagger-codegen) given an OpenAPI/Swagger spec.
Dependency: [Cowboy](https://github.com/ninenines/cowboy)
## Prerequisites
TODO
## Getting started
TODO

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samples/server/petstore/erlang-server/.swagger-codegen-ignore Normal file
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# Swagger Codegen Ignore
# Generated by swagger-codegen https://github.com/swagger-api/swagger-codegen
# Use this file to prevent files from being overwritten by the generator.
# The patterns follow closely to .gitignore or .dockerignore.
# As an example, the C# client generator defines ApiClient.cs.
# You can make changes and tell Swagger Codgen to ignore just this file by uncommenting the following line:
#ApiClient.cs
# You can match any string of characters against a directory, file or extension with a single asterisk (*):
#foo/*/qux
# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
#foo/**/qux
# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
# You can also negate patterns with an exclamation (!).
# For example, you can ignore all files in a docs folder with the file extension .md:
#docs/*.md
# Then explicitly reverse the ignore rule for a single file:
#!docs/README.md

201
samples/server/petstore/erlang-server/LICENSE Normal file
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@ -0,0 +1,201 @@
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16
samples/server/petstore/erlang-server/README.md Normal file
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@ -0,0 +1,16 @@
# Swagger rest server library for Erlang
## Overview
An Erlang server stub generated by [Swagger Codegen](https://github.com/swagger-api/swagger-codegen) given an OpenAPI/Swagger spec.
Dependency: [Cowboy](https://github.com/ninenines/cowboy)
## Prerequisites
TODO
## Getting started
TODO

1
samples/server/petstore/erlang-server/priv/swagger.json Normal file
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4
samples/server/petstore/erlang-server/rebar.config Normal file
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@ -0,0 +1,4 @@
{deps, [
{jsx, {git, "https://github.com/talentdeficit/jsx.git", {branch, "v2.8.0"}}},
{jesse, {git, "https://github.com/for-GET/jesse.git", {tag, "1.4.0"}}}
]}.

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samples/server/petstore/erlang-server/src/swagger.app.src Normal file
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{application, swagger, [
{description, "This is a sample server Petstore server. You can find out more about Swagger at [http://swagger.io](http://swagger.io) or on [irc.freenode.net, #swagger](http://swagger.io/irc/). For this sample, you can use the api key `special-key` to test the authorization filters."},
{vsn, "1.0.0"},
{registered, []},
{applications, [
kernel,
stdlib,
ssl,
inets,
jsx,
jesse,
cowboy
]},
{env, [
]},
{modules, []},
{licenses, ["Apache 2.0"]},
{links, []}
]}.

733
samples/server/petstore/erlang-server/src/swagger_api.erl Normal file
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@ -0,0 +1,733 @@
-module(swagger_api).
-export([request_params/1]).
-export([request_param_info/2]).
-export([populate_request/3]).
-export([validate_response/4]).
-type operation_id() :: atom().
-type request_param() :: atom().
-export_type([operation_id/0]).
-spec request_params(OperationID :: operation_id()) -> [Param :: request_param()].
request_params('AddPet') ->
[
'Pet'
];
request_params('DeletePet') ->
[
'petId',
'api_key'
];
request_params('FindPetsByStatus') ->
[
'status'
];
request_params('FindPetsByTags') ->
[
'tags'
];
request_params('GetPetById') ->
[
'petId'
];
request_params('UpdatePet') ->
[
'Pet'
];
request_params('UpdatePetWithForm') ->
[
'petId',
'name',
'status'
];
request_params('UploadFile') ->
[
'petId',
'additionalMetadata',
'file'
];
request_params('DeleteOrder') ->
[
'orderId'
];
request_params('GetInventory') ->
[
];
request_params('GetOrderById') ->
[
'orderId'
];
request_params('PlaceOrder') ->
[
'Order'
];
request_params('CreateUser') ->
[
'User'
];
request_params('CreateUsersWithArrayInput') ->
[
'list'
];
request_params('CreateUsersWithListInput') ->
[
'list'
];
request_params('DeleteUser') ->
[
'username'
];
request_params('GetUserByName') ->
[
'username'
];
request_params('LoginUser') ->
[
'username',
'password'
];
request_params('LogoutUser') ->
[
];
request_params('UpdateUser') ->
[
'username',
'User'
];
request_params(_) ->
error(unknown_operation).
-type rule() ::
{type, 'binary'} |
{type, 'integer'} |
{type, 'float'} |
{type, 'binary'} |
{type, 'boolean'} |
{type, 'date'} |
{type, 'datetime'} |
{enum, [atom()]} |
{max, Max :: number()} |
{exclusive_max, Max :: number()} |
{min, Min :: number()} |
{exclusive_min, Min :: number()} |
{max_length, MaxLength :: integer()} |
{min_length, MaxLength :: integer()} |
{pattern, Pattern :: string()} |
schema |
required |
not_required.
-spec request_param_info(OperationID :: operation_id(), Name :: request_param()) -> #{
source => qs_val | binding | header | body,
rules => [rule()]
}.
request_param_info('AddPet', 'Pet') ->
#{
source => body,
rules => [
schema,
required
]
};
request_param_info('DeletePet', 'petId') ->
#{
source => binding ,
rules => [
{type, 'integer'},
required
]
};
request_param_info('DeletePet', 'api_key') ->
#{
source => header,
rules => [
{type, 'binary'},
not_required
]
};
request_param_info('FindPetsByStatus', 'status') ->
#{
source => qs_val ,
rules => [
{enum, ['available', 'pending', 'sold'] },
required
]
};
request_param_info('FindPetsByTags', 'tags') ->
#{
source => qs_val ,
rules => [
required
]
};
request_param_info('GetPetById', 'petId') ->
#{
source => binding ,
rules => [
{type, 'integer'},
required
]
};
request_param_info('UpdatePet', 'Pet') ->
#{
source => body,
rules => [
schema,
required
]
};
request_param_info('UpdatePetWithForm', 'petId') ->
#{
source => binding ,
rules => [
{type, 'integer'},
required
]
};
request_param_info('UpdatePetWithForm', 'name') ->
#{
source => ,
rules => [
{type, 'binary'},
not_required
]
};
request_param_info('UpdatePetWithForm', 'status') ->
#{
source => ,
rules => [
{type, 'binary'},
not_required
]
};
request_param_info('UploadFile', 'petId') ->
#{
source => binding ,
rules => [
{type, 'integer'},
required
]
};
request_param_info('UploadFile', 'additionalMetadata') ->
#{
source => ,
rules => [
{type, 'binary'},
not_required
]
};
request_param_info('UploadFile', 'file') ->
#{
source => ,
rules => [
not_required
]
};
request_param_info('DeleteOrder', 'orderId') ->
#{
source => binding ,
rules => [
{type, 'binary'},
{min, 1.0 },
required
]
};
request_param_info('GetOrderById', 'orderId') ->
#{
source => binding ,
rules => [
{type, 'integer'},
{max, 5.0 },
{min, 1.0 },
required
]
};
request_param_info('PlaceOrder', 'Order') ->
#{
source => body,
rules => [
schema,
required
]
};
request_param_info('CreateUser', 'User') ->
#{
source => body,
rules => [
schema,
required
]
};
request_param_info('CreateUsersWithArrayInput', 'list') ->
#{
source => body,
rules => [
schema,
required
]
};
request_param_info('CreateUsersWithListInput', 'list') ->
#{
source => body,
rules => [
schema,
required
]
};
request_param_info('DeleteUser', 'username') ->
#{
source => binding ,
rules => [
{type, 'binary'},
required
]
};
request_param_info('GetUserByName', 'username') ->
#{
source => binding ,
rules => [
{type, 'binary'},
required
]
};
request_param_info('LoginUser', 'username') ->
#{
source => qs_val ,
rules => [
{type, 'binary'},
required
]
};
request_param_info('LoginUser', 'password') ->
#{
source => qs_val ,
rules => [
{type, 'binary'},
required
]
};
request_param_info('UpdateUser', 'username') ->
#{
source => binding ,
rules => [
{type, 'binary'},
required
]
};
request_param_info('UpdateUser', 'User') ->
#{
source => body,
rules => [
schema,
required
]
};
request_param_info(OperationID, Name) ->
error({unknown_param, OperationID, Name}).
-spec populate_request(
OperationID :: operation_id(),
Req :: cowboy_req:req(),
ValidatorState :: jesse_state:state()
) ->
{ok, Model :: #{}, Req :: cowboy_req:req()} |
{error, Reason :: any(), Req :: cowboy_req:req()}.
populate_request(OperationID, Req, ValidatorState) ->
Params = request_params(OperationID),
populate_request_params(OperationID, Params, Req, ValidatorState, #{}).
populate_request_params(_, [], Req, _, Model) ->
{ok, Model, Req};
populate_request_params(OperationID, [FieldParams | T], Req0, ValidatorState, Model) ->
case populate_request_param(OperationID, FieldParams, Req0, ValidatorState) of
{ok, K, V, Req} ->
populate_request_params(OperationID, T, Req, ValidatorState, maps:put(K, V, Model));
Error ->
Error
end.
populate_request_param(OperationID, Name, Req0, ValidatorState) ->
#{rules := Rules, source := Source} = request_param_info(OperationID, Name),
{Value, Req} = get_value(Source, Name, Req0),
case prepare_param(Rules, Name, Value, ValidatorState) of
{ok, Result} -> {ok, Name, Result, Req};
{error, Reason} ->
{error, Reason, Req}
end.
-spec validate_response(
OperationID :: operation_id(),
Code :: 200..599,
Body :: jesse:json_term(),
ValidatorState :: jesse_state:state()
) -> ok | no_return().
validate_response('AddPet', 405, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('DeletePet', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('FindPetsByStatus', 200, Body, ValidatorState) ->
validate_response_body('list', 'Pet', Body, ValidatorState);
validate_response('FindPetsByStatus', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('FindPetsByTags', 200, Body, ValidatorState) ->
validate_response_body('list', 'Pet', Body, ValidatorState);
validate_response('FindPetsByTags', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('GetPetById', 200, Body, ValidatorState) ->
validate_response_body('Pet', 'Pet', Body, ValidatorState);
validate_response('GetPetById', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('GetPetById', 404, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('UpdatePet', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('UpdatePet', 404, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('UpdatePet', 405, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('UpdatePetWithForm', 405, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('UploadFile', 200, Body, ValidatorState) ->
validate_response_body('ApiResponse', 'ApiResponse', Body, ValidatorState);
validate_response('DeleteOrder', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('DeleteOrder', 404, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('GetInventory', 200, Body, ValidatorState) ->
validate_response_body('map', 'integer', Body, ValidatorState);
validate_response('GetOrderById', 200, Body, ValidatorState) ->
validate_response_body('Order', 'Order', Body, ValidatorState);
validate_response('GetOrderById', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('GetOrderById', 404, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('PlaceOrder', 200, Body, ValidatorState) ->
validate_response_body('Order', 'Order', Body, ValidatorState);
validate_response('PlaceOrder', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('CreateUser', 0, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('CreateUsersWithArrayInput', 0, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('CreateUsersWithListInput', 0, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('DeleteUser', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('DeleteUser', 404, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('GetUserByName', 200, Body, ValidatorState) ->
validate_response_body('User', 'User', Body, ValidatorState);
validate_response('GetUserByName', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('GetUserByName', 404, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('LoginUser', 200, Body, ValidatorState) ->
validate_response_body('binary', 'string', Body, ValidatorState);
validate_response('LoginUser', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('LogoutUser', 0, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('UpdateUser', 400, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response('UpdateUser', 404, Body, ValidatorState) ->
validate_response_body('', '', Body, ValidatorState);
validate_response(_OperationID, _Code, _Body, _ValidatorState) ->
ok.
validate_response_body('list', ReturnBaseType, Body, ValidatorState) ->
[
validate(schema, ReturnBaseType, Item, ValidatorState)
|| Item <- Body];
validate_response_body(_, ReturnBaseType, Body, ValidatorState) ->
validate(schema, ReturnBaseType, Body, ValidatorState).
%%%
validate(Rule = required, Name, Value, _ValidatorState) ->
case Value of
undefined -> validation_error(Rule, Name);
_ -> ok
end;
validate(not_required, _Name, _Value, _ValidatorState) ->
ok;
validate(_, _Name, undefined, _ValidatorState) ->
ok;
validate(Rule = {type, 'integer'}, Name, Value, _ValidatorState) ->
try
{ok, swagger_utils:to_int(Value)}
catch
error:badarg ->
validation_error(Rule, Name)
end;
validate(Rule = {type, 'float'}, Name, Value, _ValidatorState) ->
try
{ok, swagger_utils:to_float(Value)}
catch
error:badarg ->
validation_error(Rule, Name)
end;
validate(Rule = {type, 'binary'}, Name, Value, _ValidatorState) ->
case is_binary(Value) of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(_Rule = {type, 'boolean'}, _Name, Value, _ValidatorState) when is_boolean(Value) ->
{ok, Value};
validate(Rule = {type, 'boolean'}, Name, Value, _ValidatorState) ->
V = binary_to_lower(Value),
try
case binary_to_existing_atom(V, utf8) of
B when is_boolean(B) -> {ok, B};
_ -> validation_error(Rule, Name)
end
catch
error:badarg ->
validation_error(Rule, Name)
end;
validate(Rule = {type, 'date'}, Name, Value, _ValidatorState) ->
case is_binary(Value) of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {type, 'datetime'}, Name, Value, _ValidatorState) ->
case is_binary(Value) of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {enum, Values}, Name, Value, _ValidatorState) ->
try
FormattedValue = erlang:binary_to_existing_atom(Value, utf8),
case lists:member(FormattedValue, Values) of
true -> {ok, FormattedValue};
false -> validation_error(Rule, Name)
end
catch
error:badarg ->
validation_error(Rule, Name)
end;
validate(Rule = {max, Max}, Name, Value, _ValidatorState) ->
case Value >= Max of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {exclusive_max, ExclusiveMax}, Name, Value, _ValidatorState) ->
case Value > ExclusiveMax of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {min, Min}, Name, Value, _ValidatorState) ->
case Value =< Min of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {exclusive_min, ExclusiveMin}, Name, Value, _ValidatorState) ->
case Value =< ExclusiveMin of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {max_length, MaxLength}, Name, Value, _ValidatorState) ->
case size(Value) =< MaxLength of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {min_length, MinLength}, Name, Value, _ValidatorState) ->
case size(Value) >= MinLength of
true -> ok;
false -> validation_error(Rule, Name)
end;
validate(Rule = {pattern, Pattern}, Name, Value, _ValidatorState) ->
{ok, MP} = re:compile(Pattern),
case re:run(Value, MP) of
{match, _} -> ok;
_ -> validation_error(Rule, Name)
end;
validate(Rule = schema, Name, Value, ValidatorState) ->
Definition = list_to_binary("#/definitions/" ++ swagger_utils:to_list(Name)),
try
_ = validate_with_schema(Value, Definition, ValidatorState),
ok
catch
throw:[{schema_invalid, _, Error} | _] ->
Info = #{
type => schema_invalid,
error => Error
},
validation_error(Rule, Name, Info);
throw:[{data_invalid, Schema, Error, _, Path} | _] ->
Info = #{
type => data_invalid,
error => Error,
schema => Schema,
path => Path
},
validation_error(Rule, Name, Info)
end;
validate(Rule, Name, _Value, _ValidatorState) ->
error_logger:info_msg("Can't validate ~p with ~p", [Name, Rule]),
error({unknown_validation_rule, Rule}).
-spec validation_error(Rule :: any(), Name :: any()) -> no_return().
validation_error(ViolatedRule, Name) ->
validation_error(ViolatedRule, Name, #{}).
-spec validation_error(Rule :: any(), Name :: any(), Info :: #{}) -> no_return().
validation_error(ViolatedRule, Name, Info) ->
throw({wrong_param, Name, ViolatedRule, Info}).
get_value(body, _Name, Req0) ->
{ok, Body, Req} = cowboy_req:body(Req0),
Value = prepare_body(Body),
{Value, Req};
get_value(qs_val, Name, Req0) ->
{QS, Req} = cowboy_req:qs_vals(Req0),
Value = swagger_utils:get_opt(swagger_utils:to_qs(Name), QS),
{Value, Req};
get_value(header, Name, Req0) ->
{Headers, Req} = cowboy_req:headers(Req0),
Value = swagger_utils:get_opt(swagger_utils:to_header(Name), Headers),
{Value, Req};
get_value(binding, Name, Req0) ->
{Bindings, Req} = cowboy_req:bindings(Req0),
Value = swagger_utils:get_opt(swagger_utils:to_binding(Name), Bindings),
{Value, Req}.
prepare_body(Body) ->
case Body of
<<"">> -> <<"">>;
_ -> jsx:decode(Body, [return_maps])
end.
validate_with_schema(Body, Definition, ValidatorState) ->
jesse_schema_validator:validate_with_state(
[{<<"$ref">>, Definition}],
Body,
ValidatorState
).
prepare_param(Rules, Name, Value, ValidatorState) ->
try
Result = lists:foldl(
fun(Rule, Acc) ->
case validate(Rule, Name, Acc, ValidatorState) of
ok -> Acc;
{ok, Prepared} -> Prepared
end
end,
Value,
Rules
),
{ok, Result}
catch
throw:Reason ->
{error, Reason}
end.
binary_to_lower(V) when is_binary(V) ->
list_to_binary(string:to_lower(swagger_utils:to_list(V))).

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-module(swagger_auth).
-export([authorize_api_key/5]).
-spec authorize_api_key(
LogicHandler :: atom(),
OperationID :: swagger_api:operation_id(),
From :: header | qs_val,
KeyParam :: iodata() | atom(),
Req ::cowboy_req:req()
)-> {true, Context :: #{binary() => any()}, Req ::cowboy_req:req()} |
{false, AuthHeader :: binary(), Req ::cowboy_req:req()}.
authorize_api_key(LogicHandler, OperationID, From, KeyParam, Req0) ->
{ApiKey, Req} = get_api_key(From, KeyParam, Req0),
case ApiKey of
undefined ->
AuthHeader = <<"">>,
{false, AuthHeader, Req};
_ ->
Result = swagger_logic_handler:authorize_api_key(
LogicHandler,
OperationID,
ApiKey
),
case Result of
{true, Context} ->
{true, Context, Req};
false ->
AuthHeader = <<"">>,
{false, AuthHeader, Req}
end
end.
get_api_key(header, KeyParam, Req0) ->
{Headers, Req} = cowboy_req:headers(Req0),
{
swagger_utils:get_opt(
swagger_utils:to_header(KeyParam),
Headers
),
Req
};
get_api_key(qs_val, KeyParam, Req0) ->
{QS, Req} = cowboy_req:qs_vals(Req0),
{ swagger_utils:get_opt(KeyParam, QS), Req}.

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-module(swagger_default_logic_handler).
-behaviour(swagger_logic_handler).
-export([handle_request/3]).
-export([authorize_api_key/2]).
-spec authorize_api_key(OperationID :: swagger_api:operation_id(), ApiKey :: binary()) -> {true, #{}}.
authorize_api_key(_, _) -> {true, #{}}.
-spec handle_request(
OperationID :: swagger_api:operation_id(),
Req :: cowboy_req:req(),
Context :: #{}
) ->
{Status :: cowboy:http_status(), Headers :: cowboy:http_headers(), Body :: #{}}.
handle_request(OperationID, Req, Context) ->
error_logger:error_msg(
"Got not implemented request to process: ~p~n",
[{OperationID, Req, Context}]
),
{501, [], #{}}.

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-module(swagger_logic_handler).
-export([handle_request/4]).
-export([authorize_api_key/3]).
-type context() :: #{binary() => any()}.
-type handler_response() ::{
Status :: cowboy:http_status(),
Headers :: cowboy:http_headers(),
Body :: #{}
}.
-export_type([handler_response/0]).
-callback authorize_api_key(
OperationID :: swagger_api:operation_id(),
ApiKey :: binary()
) ->
Result :: boolean() | {boolean(), context()}.
-callback handle_request(OperationID :: swagger_api:operation_id(), Request :: any(), Context :: context()) ->
handler_response().
-spec handle_request(
Handler :: atom(),
OperationID :: swagger_api:operation_id(),
Request :: any(),
Context :: context()
) ->
handler_response().
handle_request(Handler, OperationID, Req, Context) ->
Handler:handle_request(OperationID, Req, Context).
-spec authorize_api_key(Handler :: atom(), OperationID :: swagger_api:operation_id(), ApiKey :: binary()) ->
Result :: false | {true, context()}.
authorize_api_key(Handler, OperationID, ApiKey) ->
Handler:authorize_api_key(OperationID, ApiKey).

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%% basic handler
-module(swagger_pet_handler).
%% Cowboy REST callbacks
-export([allowed_methods/2]).
-export([init/3]).
-export([rest_init/2]).
-export([allow_missing_post/2]).
-export([content_types_accepted/2]).
-export([content_types_provided/2]).
-export([delete_resource/2]).
-export([is_authorized/2]).
-export([known_content_type/2]).
-export([malformed_request/2]).
-export([valid_content_headers/2]).
-export([valid_entity_length/2]).
%% Handlers
-export([handle_request_json/2]).
-record(state, {
operation_id :: swagger_api:operation_id(),
logic_handler :: atom(),
validator_state :: jesse_state:state(),
context=#{} :: #{}
}).
-type state() :: state().
-spec init(TransportName :: atom(), Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()) ->
{upgrade, protocol, cowboy_rest, Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()}.
init(_Transport, Req, Opts) ->
{upgrade, protocol, cowboy_rest, Req, Opts}.
-spec rest_init(Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()) ->
{ok, Req :: cowboy_req:req(), State :: state()}.
rest_init(Req0, {Operations, LogicHandler, ValidatorState}) ->
{Method, Req} = cowboy_req:method(Req0),
OperationID = maps:get(Method, Operations, undefined),
error_logger:info_msg("Attempt to process operation: ~p", [OperationID]),
State = #state{
operation_id = OperationID,
logic_handler = LogicHandler,
validator_state = ValidatorState
},
{ok, Req, State}.
-spec allowed_methods(Req :: cowboy_req:req(), State :: state()) ->
{Value :: [binary()], Req :: cowboy_req:req(), State :: state()}.
allowed_methods(
Req,
State = #state{
operation_id = 'AddPet'
}
) ->
{[<<"POST">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'DeletePet'
}
) ->
{[<<"DELETE">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'FindPetsByStatus'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'FindPetsByTags'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'GetPetById'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'UpdatePet'
}
) ->
{[<<"PUT">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'UpdatePetWithForm'
}
) ->
{[<<"POST">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'UploadFile'
}
) ->
{[<<"POST">>], Req, State};
allowed_methods(Req, State) ->
{[], Req, State}.
-spec is_authorized(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: true | {false, AuthHeader :: iodata()},
Req :: cowboy_req:req(),
State :: state()
}.
is_authorized(
Req0,
State = #state{
operation_id = 'AddPet' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'DeletePet' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'FindPetsByStatus' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'FindPetsByTags' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'GetPetById' = OperationID,
logic_handler = LogicHandler
}
) ->
From = header,
Result = swagger_auth:authorize_api_key(
LogicHandler,
OperationID,
From,
"api_key",
Req0
),
case Result of
{true, Context, Req} -> {true, Req, State#state{context = Context}};
{false, AuthHeader, Req} -> {{false, AuthHeader}, Req, State}
end;
is_authorized(
Req0,
State = #state{
operation_id = 'UpdatePet' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'UpdatePetWithForm' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'UploadFile' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(Req, State) ->
{{false, <<"">>}, Req, State}.
-spec content_types_accepted(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: [{binary(), AcceptResource :: atom()}],
Req :: cowboy_req:req(),
State :: state()
}.
content_types_accepted(Req, State) ->
{[
{<<"application/json">>, handle_request_json}
], Req, State}.
-spec valid_content_headers(Req :: cowboy_req:req(), State :: state()) ->
{Value :: boolean(), Req :: cowboy_req:req(), State :: state()}.
valid_content_headers(
Req0,
State = #state{
operation_id = 'AddPet'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'DeletePet'
}
) ->
Headers = ["api_key"],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'FindPetsByStatus'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'FindPetsByTags'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'GetPetById'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'UpdatePet'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'UpdatePetWithForm'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'UploadFile'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(Req, State) ->
{false, Req, State}.
-spec content_types_provided(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: [{binary(), ProvideResource :: atom()}],
Req :: cowboy_req:req(),
State :: state()
}.
content_types_provided(Req, State) ->
{[
{<<"application/json">>, handle_request_json}
], Req, State}.
-spec malformed_request(Req :: cowboy_req:req(), State :: state()) ->
{Value :: false, Req :: cowboy_req:req(), State :: state()}.
malformed_request(Req, State) ->
{false, Req, State}.
-spec allow_missing_post(Req :: cowboy_req:req(), State :: state()) ->
{Value :: false, Req :: cowboy_req:req(), State :: state()}.
allow_missing_post(Req, State) ->
{false, Req, State}.
-spec delete_resource(Req :: cowboy_req:req(), State :: state()) ->
processed_response().
delete_resource(Req, State) ->
handle_request_json(Req, State).
-spec known_content_type(Req :: cowboy_req:req(), State :: state()) ->
{Value :: true, Req :: cowboy_req:req(), State :: state()}.
known_content_type(Req, State) ->
{true, Req, State}.
-spec valid_entity_length(Req :: cowboy_req:req(), State :: state()) ->
{Value :: true, Req :: cowboy_req:req(), State :: state()}.
valid_entity_length(Req, State) ->
%% @TODO check the length
{true, Req, State}.
%%%%
-type result_ok() :: {
ok,
{Status :: cowboy:http_status(), Headers :: cowboy:http_headers(), Body :: iodata()}
}.
-type result_error() :: {error, Reason :: any()}.
-type processed_response() :: {halt, cowboy_req:req(), state()}.
-spec process_response(result_ok() | result_error(), cowboy_req:req(), state()) ->
processed_response().
process_response(Response, Req0, State = #state{operation_id = OperationID}) ->
case Response of
{ok, {Code, Headers, Body}} ->
{ok, Req} = cowboy_req:reply(Code, Headers, Body, Req0),
{halt, Req, State};
{error, Message} ->
error_logger:error_msg("Unable to process request for ~p: ~p", [OperationID, Message]),
{ok, Req} = cowboy_req:reply(400, Req0),
{halt, Req, State}
end.
-spec handle_request_json(cowboy_req:req(), state()) -> {halt, cowboy_req:req(), state()}.
handle_request_json(
Req0,
State = #state{
operation_id = OperationID,
logic_handler = LogicHandler,
validator_state = ValidatorState,
context = Context
}
) ->
case swagger_api:populate_request(OperationID, Req0, ValidatorState) of
{ok, Populated, Req1} ->
{Code, Headers, Body} = swagger_logic_handler:handle_request(
LogicHandler,
OperationID,
Populated,
Context
),
_ = swagger_api:validate_response(
OperationID,
Code,
Body,
ValidatorState
),
PreparedBody = jsx:encode(Body),
Response = {ok, {Code, Headers, PreparedBody}},
process_response(Response, Req1, State);
{error, Reason, Req1} ->
process_response({error, Reason}, Req1, State)
end.
validate_headers(_, Req) -> {true, Req}.

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-module(swagger_router).
-export([get_paths/1]).
-type operations() :: #{
Method :: binary() => swagger_api:operation_id()
}.
-type init_opts() :: {
Operations :: operations(),
LogicHandler :: atom(),
ValidatorState :: jesse_state:state()
}.
-export_type([init_opts/0]).
-spec get_paths(LogicHandler :: atom()) -> [{'_',[{
Path :: string(),
Handler :: atom(),
InitOpts :: init_opts()
}]}].
get_paths(LogicHandler) ->
ValidatorState = prepare_validator(),
PreparedPaths = maps:fold(
fun(Path, #{operations := Operations, handler := Handler}, Acc) ->
[{Path, Handler, Operations} | Acc]
end,
[],
group_paths()
),
[
{'_',
[{P, H, {O, LogicHandler, ValidatorState}} || {P, H, O} <- PreparedPaths]
}
].
group_paths() ->
maps:fold(
fun(OperationID, #{path := Path, method := Method, handler := Handler}, Acc) ->
case maps:find(Path, Acc) of
{ok, PathInfo0 = #{operations := Operations0}} ->
Operations = Operations0#{Method => OperationID},
PathInfo = PathInfo0#{operations => Operations},
Acc#{Path => PathInfo};
error ->
Operations = #{Method => OperationID},
PathInfo = #{handler => Handler, operations => Operations},
Acc#{Path => PathInfo}
end
end,
#{},
get_operations()
).
get_operations() ->
#{
'AddPet' => #{
path => "/v2/pet",
method => <<"POST">>,
handler => 'swagger_pet_handler'
},
'DeletePet' => #{
path => "/v2/pet/:petId",
method => <<"DELETE">>,
handler => 'swagger_pet_handler'
},
'FindPetsByStatus' => #{
path => "/v2/pet/findByStatus",
method => <<"GET">>,
handler => 'swagger_pet_handler'
},
'FindPetsByTags' => #{
path => "/v2/pet/findByTags",
method => <<"GET">>,
handler => 'swagger_pet_handler'
},
'GetPetById' => #{
path => "/v2/pet/:petId",
method => <<"GET">>,
handler => 'swagger_pet_handler'
},
'UpdatePet' => #{
path => "/v2/pet",
method => <<"PUT">>,
handler => 'swagger_pet_handler'
},
'UpdatePetWithForm' => #{
path => "/v2/pet/:petId",
method => <<"POST">>,
handler => 'swagger_pet_handler'
},
'UploadFile' => #{
path => "/v2/pet/:petId/uploadImage",
method => <<"POST">>,
handler => 'swagger_pet_handler'
},
'DeleteOrder' => #{
path => "/v2/store/order/:orderId",
method => <<"DELETE">>,
handler => 'swagger_store_handler'
},
'GetInventory' => #{
path => "/v2/store/inventory",
method => <<"GET">>,
handler => 'swagger_store_handler'
},
'GetOrderById' => #{
path => "/v2/store/order/:orderId",
method => <<"GET">>,
handler => 'swagger_store_handler'
},
'PlaceOrder' => #{
path => "/v2/store/order",
method => <<"POST">>,
handler => 'swagger_store_handler'
},
'CreateUser' => #{
path => "/v2/user",
method => <<"POST">>,
handler => 'swagger_user_handler'
},
'CreateUsersWithArrayInput' => #{
path => "/v2/user/createWithArray",
method => <<"POST">>,
handler => 'swagger_user_handler'
},
'CreateUsersWithListInput' => #{
path => "/v2/user/createWithList",
method => <<"POST">>,
handler => 'swagger_user_handler'
},
'DeleteUser' => #{
path => "/v2/user/:username",
method => <<"DELETE">>,
handler => 'swagger_user_handler'
},
'GetUserByName' => #{
path => "/v2/user/:username",
method => <<"GET">>,
handler => 'swagger_user_handler'
},
'LoginUser' => #{
path => "/v2/user/login",
method => <<"GET">>,
handler => 'swagger_user_handler'
},
'LogoutUser' => #{
path => "/v2/user/logout",
method => <<"GET">>,
handler => 'swagger_user_handler'
},
'UpdateUser' => #{
path => "/v2/user/:username",
method => <<"PUT">>,
handler => 'swagger_user_handler'
}
}.
prepare_validator() ->
R = jsx:decode(element(2, file:read_file(get_swagger_path()))),
jesse_state:new(R, [{default_schema_ver, <<"http://json-schema.org/draft-04/schema#">>}]).
get_swagger_path() ->
{ok, AppName} = application:get_application(?MODULE),
filename:join(swagger_utils:priv_dir(AppName), "swagger.json").

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-module(swagger_server).
-define(DEFAULT_ACCEPTORS_POOLSIZE, 100).
-define(DEFAULT_LOGIC_HANDLER, swagger_default_logic_handler).
-export([child_spec/2]).
-spec child_spec( ID :: any(), #{
ip => inet:ip_address(),
port => inet:port_number(),
net_opts => []
}) -> supervisor:child_spec().
child_spec(ID, #{
ip := IP ,
port := Port,
net_opts := NetOpts
} = Params) ->
AcceptorsPool = ?DEFAULT_ACCEPTORS_POOLSIZE,
{Transport, TransportOpts} = get_socket_transport(IP, Port, NetOpts),
LogicHandler = maps:get(logic_handler, Params, ?DEFAULT_LOGIC_HANDLER),
ExtraOpts = maps:get(cowboy_extra_opts, Params, []),
CowboyOpts = get_cowboy_config(LogicHandler, ExtraOpts),
ranch:child_spec({?MODULE, ID}, AcceptorsPool,
Transport, TransportOpts, cowboy_protocol, CowboyOpts).
get_socket_transport(IP, Port, Options) ->
Opts = [
{ip, IP},
{port, Port}
],
case swagger_utils:get_opt(ssl, Options) of
SslOpts = [_|_] ->
{ranch_ssl, Opts ++ SslOpts};
undefined ->
{ranch_tcp, Opts}
end.
get_cowboy_config(LogicHandler, ExtraOpts) ->
get_cowboy_config(LogicHandler, ExtraOpts, get_default_opts(LogicHandler)).
get_cowboy_config(_LogicHandler, [], Opts) ->
Opts;
get_cowboy_config(LogicHandler, [{env, Env} | Rest], Opts) ->
NewEnv = case proplists:get_value(dispatch, Env) of
undefined -> [get_default_dispatch(LogicHandler) | Env];
_ -> Env
end,
get_cowboy_config(LogicHandler, Rest, store_key(env, NewEnv, Opts));
get_cowboy_config(LogicHandler, [{Key, Value}| Rest], Opts) ->
get_cowboy_config(LogicHandler, Rest, store_key(Key, Value, Opts)).
get_default_dispatch(LogicHandler) ->
Paths = swagger_router:get_paths(LogicHandler),
{dispatch, cowboy_router:compile(Paths)}.
get_default_opts(LogicHandler) ->
[{env, [get_default_dispatch(LogicHandler)]}].
store_key(Key, Value, Opts) ->
lists:keystore(Key, 1, Opts, {Key, Value}).

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%% basic handler
-module(swagger_store_handler).
%% Cowboy REST callbacks
-export([allowed_methods/2]).
-export([init/3]).
-export([rest_init/2]).
-export([allow_missing_post/2]).
-export([content_types_accepted/2]).
-export([content_types_provided/2]).
-export([delete_resource/2]).
-export([is_authorized/2]).
-export([known_content_type/2]).
-export([malformed_request/2]).
-export([valid_content_headers/2]).
-export([valid_entity_length/2]).
%% Handlers
-export([handle_request_json/2]).
-record(state, {
operation_id :: swagger_api:operation_id(),
logic_handler :: atom(),
validator_state :: jesse_state:state(),
context=#{} :: #{}
}).
-type state() :: state().
-spec init(TransportName :: atom(), Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()) ->
{upgrade, protocol, cowboy_rest, Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()}.
init(_Transport, Req, Opts) ->
{upgrade, protocol, cowboy_rest, Req, Opts}.
-spec rest_init(Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()) ->
{ok, Req :: cowboy_req:req(), State :: state()}.
rest_init(Req0, {Operations, LogicHandler, ValidatorState}) ->
{Method, Req} = cowboy_req:method(Req0),
OperationID = maps:get(Method, Operations, undefined),
error_logger:info_msg("Attempt to process operation: ~p", [OperationID]),
State = #state{
operation_id = OperationID,
logic_handler = LogicHandler,
validator_state = ValidatorState
},
{ok, Req, State}.
-spec allowed_methods(Req :: cowboy_req:req(), State :: state()) ->
{Value :: [binary()], Req :: cowboy_req:req(), State :: state()}.
allowed_methods(
Req,
State = #state{
operation_id = 'DeleteOrder'
}
) ->
{[<<"DELETE">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'GetInventory'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'GetOrderById'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'PlaceOrder'
}
) ->
{[<<"POST">>], Req, State};
allowed_methods(Req, State) ->
{[], Req, State}.
-spec is_authorized(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: true | {false, AuthHeader :: iodata()},
Req :: cowboy_req:req(),
State :: state()
}.
is_authorized(
Req0,
State = #state{
operation_id = 'DeleteOrder' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'GetInventory' = OperationID,
logic_handler = LogicHandler
}
) ->
From = header,
Result = swagger_auth:authorize_api_key(
LogicHandler,
OperationID,
From,
"api_key",
Req0
),
case Result of
{true, Context, Req} -> {true, Req, State#state{context = Context}};
{false, AuthHeader, Req} -> {{false, AuthHeader}, Req, State}
end;
is_authorized(
Req0,
State = #state{
operation_id = 'GetOrderById' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'PlaceOrder' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(Req, State) ->
{{false, <<"">>}, Req, State}.
-spec content_types_accepted(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: [{binary(), AcceptResource :: atom()}],
Req :: cowboy_req:req(),
State :: state()
}.
content_types_accepted(Req, State) ->
{[
{<<"application/json">>, handle_request_json}
], Req, State}.
-spec valid_content_headers(Req :: cowboy_req:req(), State :: state()) ->
{Value :: boolean(), Req :: cowboy_req:req(), State :: state()}.
valid_content_headers(
Req0,
State = #state{
operation_id = 'DeleteOrder'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'GetInventory'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'GetOrderById'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'PlaceOrder'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(Req, State) ->
{false, Req, State}.
-spec content_types_provided(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: [{binary(), ProvideResource :: atom()}],
Req :: cowboy_req:req(),
State :: state()
}.
content_types_provided(Req, State) ->
{[
{<<"application/json">>, handle_request_json}
], Req, State}.
-spec malformed_request(Req :: cowboy_req:req(), State :: state()) ->
{Value :: false, Req :: cowboy_req:req(), State :: state()}.
malformed_request(Req, State) ->
{false, Req, State}.
-spec allow_missing_post(Req :: cowboy_req:req(), State :: state()) ->
{Value :: false, Req :: cowboy_req:req(), State :: state()}.
allow_missing_post(Req, State) ->
{false, Req, State}.
-spec delete_resource(Req :: cowboy_req:req(), State :: state()) ->
processed_response().
delete_resource(Req, State) ->
handle_request_json(Req, State).
-spec known_content_type(Req :: cowboy_req:req(), State :: state()) ->
{Value :: true, Req :: cowboy_req:req(), State :: state()}.
known_content_type(Req, State) ->
{true, Req, State}.
-spec valid_entity_length(Req :: cowboy_req:req(), State :: state()) ->
{Value :: true, Req :: cowboy_req:req(), State :: state()}.
valid_entity_length(Req, State) ->
%% @TODO check the length
{true, Req, State}.
%%%%
-type result_ok() :: {
ok,
{Status :: cowboy:http_status(), Headers :: cowboy:http_headers(), Body :: iodata()}
}.
-type result_error() :: {error, Reason :: any()}.
-type processed_response() :: {halt, cowboy_req:req(), state()}.
-spec process_response(result_ok() | result_error(), cowboy_req:req(), state()) ->
processed_response().
process_response(Response, Req0, State = #state{operation_id = OperationID}) ->
case Response of
{ok, {Code, Headers, Body}} ->
{ok, Req} = cowboy_req:reply(Code, Headers, Body, Req0),
{halt, Req, State};
{error, Message} ->
error_logger:error_msg("Unable to process request for ~p: ~p", [OperationID, Message]),
{ok, Req} = cowboy_req:reply(400, Req0),
{halt, Req, State}
end.
-spec handle_request_json(cowboy_req:req(), state()) -> {halt, cowboy_req:req(), state()}.
handle_request_json(
Req0,
State = #state{
operation_id = OperationID,
logic_handler = LogicHandler,
validator_state = ValidatorState,
context = Context
}
) ->
case swagger_api:populate_request(OperationID, Req0, ValidatorState) of
{ok, Populated, Req1} ->
{Code, Headers, Body} = swagger_logic_handler:handle_request(
LogicHandler,
OperationID,
Populated,
Context
),
_ = swagger_api:validate_response(
OperationID,
Code,
Body,
ValidatorState
),
PreparedBody = jsx:encode(Body),
Response = {ok, {Code, Headers, PreparedBody}},
process_response(Response, Req1, State);
{error, Reason, Req1} ->
process_response({error, Reason}, Req1, State)
end.
validate_headers(_, Req) -> {true, Req}.

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%% basic handler
-module(swagger_user_handler).
%% Cowboy REST callbacks
-export([allowed_methods/2]).
-export([init/3]).
-export([rest_init/2]).
-export([allow_missing_post/2]).
-export([content_types_accepted/2]).
-export([content_types_provided/2]).
-export([delete_resource/2]).
-export([is_authorized/2]).
-export([known_content_type/2]).
-export([malformed_request/2]).
-export([valid_content_headers/2]).
-export([valid_entity_length/2]).
%% Handlers
-export([handle_request_json/2]).
-record(state, {
operation_id :: swagger_api:operation_id(),
logic_handler :: atom(),
validator_state :: jesse_state:state(),
context=#{} :: #{}
}).
-type state() :: state().
-spec init(TransportName :: atom(), Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()) ->
{upgrade, protocol, cowboy_rest, Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()}.
init(_Transport, Req, Opts) ->
{upgrade, protocol, cowboy_rest, Req, Opts}.
-spec rest_init(Req :: cowboy_req:req(), Opts :: swagger_router:init_opts()) ->
{ok, Req :: cowboy_req:req(), State :: state()}.
rest_init(Req0, {Operations, LogicHandler, ValidatorState}) ->
{Method, Req} = cowboy_req:method(Req0),
OperationID = maps:get(Method, Operations, undefined),
error_logger:info_msg("Attempt to process operation: ~p", [OperationID]),
State = #state{
operation_id = OperationID,
logic_handler = LogicHandler,
validator_state = ValidatorState
},
{ok, Req, State}.
-spec allowed_methods(Req :: cowboy_req:req(), State :: state()) ->
{Value :: [binary()], Req :: cowboy_req:req(), State :: state()}.
allowed_methods(
Req,
State = #state{
operation_id = 'CreateUser'
}
) ->
{[<<"POST">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'CreateUsersWithArrayInput'
}
) ->
{[<<"POST">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'CreateUsersWithListInput'
}
) ->
{[<<"POST">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'DeleteUser'
}
) ->
{[<<"DELETE">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'GetUserByName'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'LoginUser'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'LogoutUser'
}
) ->
{[<<"GET">>], Req, State};
allowed_methods(
Req,
State = #state{
operation_id = 'UpdateUser'
}
) ->
{[<<"PUT">>], Req, State};
allowed_methods(Req, State) ->
{[], Req, State}.
-spec is_authorized(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: true | {false, AuthHeader :: iodata()},
Req :: cowboy_req:req(),
State :: state()
}.
is_authorized(
Req0,
State = #state{
operation_id = 'CreateUser' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'CreateUsersWithArrayInput' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'CreateUsersWithListInput' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'DeleteUser' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'GetUserByName' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'LoginUser' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'LogoutUser' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(
Req0,
State = #state{
operation_id = 'UpdateUser' = OperationID,
logic_handler = LogicHandler
}
) ->
is_authorized(Req, State) ->
{{false, <<"">>}, Req, State}.
-spec content_types_accepted(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: [{binary(), AcceptResource :: atom()}],
Req :: cowboy_req:req(),
State :: state()
}.
content_types_accepted(Req, State) ->
{[
{<<"application/json">>, handle_request_json}
], Req, State}.
-spec valid_content_headers(Req :: cowboy_req:req(), State :: state()) ->
{Value :: boolean(), Req :: cowboy_req:req(), State :: state()}.
valid_content_headers(
Req0,
State = #state{
operation_id = 'CreateUser'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'CreateUsersWithArrayInput'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'CreateUsersWithListInput'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'DeleteUser'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'GetUserByName'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'LoginUser'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'LogoutUser'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(
Req0,
State = #state{
operation_id = 'UpdateUser'
}
) ->
Headers = [],
{Result, Req} = validate_headers(Headers, Req0),
{Result, Req, State};
valid_content_headers(Req, State) ->
{false, Req, State}.
-spec content_types_provided(Req :: cowboy_req:req(), State :: state()) ->
{
Value :: [{binary(), ProvideResource :: atom()}],
Req :: cowboy_req:req(),
State :: state()
}.
content_types_provided(Req, State) ->
{[
{<<"application/json">>, handle_request_json}
], Req, State}.
-spec malformed_request(Req :: cowboy_req:req(), State :: state()) ->
{Value :: false, Req :: cowboy_req:req(), State :: state()}.
malformed_request(Req, State) ->
{false, Req, State}.
-spec allow_missing_post(Req :: cowboy_req:req(), State :: state()) ->
{Value :: false, Req :: cowboy_req:req(), State :: state()}.
allow_missing_post(Req, State) ->
{false, Req, State}.
-spec delete_resource(Req :: cowboy_req:req(), State :: state()) ->
processed_response().
delete_resource(Req, State) ->
handle_request_json(Req, State).
-spec known_content_type(Req :: cowboy_req:req(), State :: state()) ->
{Value :: true, Req :: cowboy_req:req(), State :: state()}.
known_content_type(Req, State) ->
{true, Req, State}.
-spec valid_entity_length(Req :: cowboy_req:req(), State :: state()) ->
{Value :: true, Req :: cowboy_req:req(), State :: state()}.
valid_entity_length(Req, State) ->
%% @TODO check the length
{true, Req, State}.
%%%%
-type result_ok() :: {
ok,
{Status :: cowboy:http_status(), Headers :: cowboy:http_headers(), Body :: iodata()}
}.
-type result_error() :: {error, Reason :: any()}.
-type processed_response() :: {halt, cowboy_req:req(), state()}.
-spec process_response(result_ok() | result_error(), cowboy_req:req(), state()) ->
processed_response().
process_response(Response, Req0, State = #state{operation_id = OperationID}) ->
case Response of
{ok, {Code, Headers, Body}} ->
{ok, Req} = cowboy_req:reply(Code, Headers, Body, Req0),
{halt, Req, State};
{error, Message} ->
error_logger:error_msg("Unable to process request for ~p: ~p", [OperationID, Message]),
{ok, Req} = cowboy_req:reply(400, Req0),
{halt, Req, State}
end.
-spec handle_request_json(cowboy_req:req(), state()) -> {halt, cowboy_req:req(), state()}.
handle_request_json(
Req0,
State = #state{
operation_id = OperationID,
logic_handler = LogicHandler,
validator_state = ValidatorState,
context = Context
}
) ->
case swagger_api:populate_request(OperationID, Req0, ValidatorState) of
{ok, Populated, Req1} ->
{Code, Headers, Body} = swagger_logic_handler:handle_request(
LogicHandler,
OperationID,
Populated,
Context
),
_ = swagger_api:validate_response(
OperationID,
Code,
Body,
ValidatorState
),
PreparedBody = jsx:encode(Body),
Response = {ok, {Code, Headers, PreparedBody}},
process_response(Response, Req1, State);
{error, Reason, Req1} ->
process_response({error, Reason}, Req1, State)
end.
validate_headers(_, Req) -> {true, Req}.

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-module(swagger_utils).
-export([to_binary/1]).
-export([to_list/1]).
-export([to_float/1]).
-export([to_int/1]).
-export([to_lower/1]).
-export([to_upper/1]).
-export([set_resp_headers/2]).
-export([to_header/1]).
-export([to_qs/1]).
-export([to_binding/1]).
-export([get_opt/2]).
-export([get_opt/3]).
-export([priv_dir/0]).
-export([priv_dir/1]).
-export([priv_path/1]).
-spec to_binary(iodata() | atom() | number()) -> binary().
to_binary(V) when is_binary(V) -> V;
to_binary(V) when is_list(V) -> iolist_to_binary(V);
to_binary(V) when is_atom(V) -> atom_to_binary(V, utf8);
to_binary(V) when is_integer(V) -> integer_to_binary(V);
to_binary(V) when is_float(V) -> float_to_binary(V).
-spec to_list(iodata() | atom() | number()) -> string().
to_list(V) when is_list(V) -> V;
to_list(V) -> binary_to_list(to_binary(V)).
-spec to_float(iodata()) -> number().
to_float(V) ->
Data = iolist_to_binary([V]),
case binary:split(Data, <<$.>>) of
[Data] ->
binary_to_integer(Data);
[<<>>, _] ->
binary_to_float(<<$0, Data/binary>>);
_ ->
binary_to_float(Data)
end.
%%
-spec to_int(integer() | binary() | list()) -> integer().
to_int(Data) when is_integer(Data) ->
Data;
to_int(Data) when is_binary(Data) ->
binary_to_integer(Data);
to_int(Data) when is_list(Data) ->
list_to_integer(Data).
-spec set_resp_headers([{binary(), iodata()}], cowboy_req:req()) -> cowboy_req:req().
set_resp_headers([], Req) ->
Req;
set_resp_headers([{K, V} | T], Req0) ->
Req = cowboy_req:set_resp_header(K, V, Req0),
set_resp_headers(T, Req).
-spec to_header(iodata() | atom() | number()) -> binary().
to_header(Name) ->
Prepared = to_binary(Name),
to_lower(Prepared).
-spec to_qs(iodata() | atom() | number()) -> binary().
to_qs(Name) ->
to_binary(Name).
-spec to_binding(iodata() | atom() | number()) -> atom().
to_binding(Name) ->
Prepared = to_binary(Name),
binary_to_atom(Prepared, utf8).
-spec get_opt(any(), []) -> any().
get_opt(Key, Opts) ->
get_opt(Key, Opts, undefined).
-spec get_opt(any(), [], any()) -> any().
get_opt(Key, Opts, Default) ->
case lists:keyfind(Key, 1, Opts) of
{_, Value} -> Value;
false -> Default
end.
-spec priv_dir() -> file:filename().
priv_dir() ->
{ok, AppName} = application:get_application(),
priv_dir(AppName).
-spec priv_dir(Application :: atom()) -> file:filename().
priv_dir(AppName) ->
case code:priv_dir(AppName) of
Value when is_list(Value) ->
Value ++ "/";
_Error ->
select_priv_dir([filename:join(["apps", atom_to_list(AppName), "priv"]), "priv"])
end.
-spec priv_path(Relative :: file:filename()) -> file:filename().
priv_path(Relative) ->
filename:join(priv_dir(), Relative).
-include_lib("kernel/include/file.hrl").
select_priv_dir(Paths) ->
case lists:dropwhile(fun test_priv_dir/1, Paths) of
[Path | _] -> Path;
_ -> exit(no_priv_dir)
end.
test_priv_dir(Path) ->
case file:read_file_info(Path) of
{ok, #file_info{type = directory}} ->
false;
_ ->
true
end.
%%
-spec to_lower(binary()) -> binary().
to_lower(S) ->
to_case(lower, S, <<>>).
-spec to_upper(binary()) -> binary().
to_upper(S) ->
to_case(upper, S, <<>>).
to_case(_Case, <<>>, Acc) ->
Acc;
to_case(_Case, <<C, _/binary>>, _Acc) when C > 127 ->
error(badarg);
to_case(Case = lower, <<C, Rest/binary>>, Acc) ->
to_case(Case, Rest, <<Acc/binary, (to_lower_char(C))>>);
to_case(Case = upper, <<C, Rest/binary>>, Acc) ->
to_case(Case, Rest, <<Acc/binary, (to_upper_char(C))>>).
to_lower_char(C) when is_integer(C), $A =< C, C =< $Z ->
C + 32;
to_lower_char(C) when is_integer(C), 16#C0 =< C, C =< 16#D6 ->
C + 32;
to_lower_char(C) when is_integer(C), 16#D8 =< C, C =< 16#DE ->
C + 32;
to_lower_char(C) ->
C.
to_upper_char(C) when is_integer(C), $a =< C, C =< $z ->
C - 32;
to_upper_char(C) when is_integer(C), 16#E0 =< C, C =< 16#F6 ->
C - 32;
to_upper_char(C) when is_integer(C), 16#F8 =< C, C =< 16#FE ->
C - 32;
to_upper_char(C) ->
C.