swagger-marshmallow-codegen 0.3.4

generating marshmallow's schema from swagger definition file

concepts

• Code generation is better than meta programming

• Don’t touch me(generated code) if you can

todo: write down detail.

examples

$ swagger-marshmallow-codegen definition.yaml > definition.py

definition.yaml

# todo: gentle example
definitions:
  default:
    properties:
      string:
        type: string
        default: "default"
      integer:
        type: integer
        default: 10
      boolean:
        type: boolean
        default: true
      date:
        type: string
        format: date
        default: 2000-01-01
      datetime:
        type: string
        format: date-time
        default: 2000-01-01T01:01:01Z
      object:
        type: object
        properties:
          name:
            type: string
            default: foo
          age:
            type: integer
            default: 20
        default:
          name: foo
          age: 20
      array:
        type: array
        items:
          type: integer
        default:
          - 1
          - 2
          - 3

  length-validation:
    type: object
    properties:
      s0:
        type: string
      s1:
        type: string
        maxLength: 10
      s2:
        type: string
        minLength: 5
      s3:
        type: string
        maxLength: 10
        minLength: 5

  maximum-validation:
    type: object
    properties:
      n0:
        type: number
        maximum: 100
      n1:
        type: number
        maximum: 100
        exclusiveMaximum: true
      n2:
        type: number
        maximum: 100
        exclusiveMaximum: false
      m0:
        type: number
        minimum: 100
      m1:
        type: number
        minimum: 100
        exclusiveMinimum: true
      m2:
        type: number
        minimum: 100
        exclusiveMinimum: false

  regex-validation:
    type: object
    properties:
      team:
        type: string
        pattern: team[1-9][0-9]+
      team2:
        type: string
        pattern: team[1-9][0-9]+
        maxLength: 10

  array-validation:
    type: object
    properties:
      nums:
        type: array
        items:
          type: integer
        maxItems: 10
        minItems: 1
        uniqueItems: true

  color:
    type: string
    enum:
      - R
      - G
      - B
  yen:
    type: integer
    enum:
      - 1
      - 5
      - 10
      - 50
      - 100
      - 500
      - 1000
      - 5000
      - 10000
  huge-yen:
    type: integer
    multipleOf: 10000
  enum-validation:
    type: object
    required:
      - name
      - color
    properties:
      name:
        type: string
      money:
        $ref: "#/definitions/yen"
      deposit:
        $ref: "#/definitions/huge-yen"
      color:
        $ref: "#/definitions/color"

definition.py

# -*- coding:utf-8 -*-
from marshmallow import (
    Schema,
    fields
)
import datetime
from swagger_marshmallow_codegen.fields import (
    Date,
    DateTime
)
from collections import OrderedDict
from marshmallow.validate import (
    Length,
    OneOf,
    Regexp
)
from swagger_marshmallow_codegen.validate import (
    ItemsRange,
    MultipleOf,
    Range,
    Unique
)
import re


class Default(Schema):
    string = fields.String(missing=lambda: 'default')
    integer = fields.Integer(missing=lambda: 10)
    boolean = fields.Boolean(missing=lambda: True)
    date = Date(missing=lambda: datetime.date(2000, 1, 1))
    datetime = DateTime(missing=lambda: datetime.datetime(2000, 1, 1, 1, 1, 1))
    object = fields.Nested('DefaultObject', missing=lambda: OrderedDict([('name', 'foo'), ('age', 20)]))
    array = fields.List(fields.Integer(), missing=lambda: [1, 2, 3])


class DefaultObject(Schema):
    name = fields.String(missing=lambda: 'foo')
    age = fields.Integer(missing=lambda: 20)


class Length_validation(Schema):
    s0 = fields.String()
    s1 = fields.String(validate=[Length(min=None, max=10, equal=None)])
    s2 = fields.String(validate=[Length(min=5, max=None, equal=None)])
    s3 = fields.String(validate=[Length(min=5, max=10, equal=None)])


class Maximum_validation(Schema):
    n0 = fields.Number(validate=[Range(min=None, max=100, exclusive_min=False, exclusive_max=False)])
    n1 = fields.Number(validate=[Range(min=None, max=100, exclusive_min=False, exclusive_max=True)])
    n2 = fields.Number(validate=[Range(min=None, max=100, exclusive_min=False, exclusive_max=False)])
    m0 = fields.Number(validate=[Range(min=100, max=None, exclusive_min=False, exclusive_max=False)])
    m1 = fields.Number(validate=[Range(min=100, max=None, exclusive_min=True, exclusive_max=False)])
    m2 = fields.Number(validate=[Range(min=100, max=None, exclusive_min=False, exclusive_max=False)])


class Regex_validation(Schema):
    team = fields.String(validate=[Regexp(regex=re.compile('team[1-9][0-9]+'))])
    team2 = fields.String(validate=[Length(min=None, max=10, equal=None), Regexp(regex=re.compile('team[1-9][0-9]+'))])


class Array_validation(Schema):
    nums = fields.List(fields.Integer(), validate=[ItemsRange(min=1, max=10), Unique()])


class Enum_validation(Schema):
    name = fields.String(required=True)
    money = fields.Integer(validate=[OneOf(choices=[1, 5, 10, 50, 100, 500, 1000, 5000, 10000], labels=[])])
    deposit = fields.Integer(validate=[MultipleOf(n=10000)])
    color = fields.String(required=True, validate=[OneOf(choices=['R', 'G', 'B'], labels=[])])

customization:

todo: write down

https://github.com/podhmo/swagger-marshmallow-codegen/issues/1

todo:

• x-marshmallow-name

0.3.4

• list fields dispatch is also customizable

0.3.3

• support python’s resrved word field name #12

• support path.parameters #11

0.3.2

• fix bug validation for array type

0.3.1

• fix bug for lifting schema

0.3

• support generating schema from paths

0.2

• support allOf

• support readOnly

• customization

0.1

• first release