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haskell-http-client.md

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title
Documentation for the haskell-http-client Generator

METADATA

Property Value Notes
generator name haskell-http-client pass this to the generate command after -g
generator stability STABLE
generator type CLIENT
generator language Haskell
generator default templating engine mustache
helpTxt Generates a Haskell http-client library.

CONFIG OPTIONS

These options may be applied as additional-properties (cli) or configOptions (plugins). Refer to configuration docs for more details.

Option Description Values Default
allowFromJsonNulls allow JSON Null during model decoding from JSON true
allowNonUniqueOperationIds allow different API modules to contain the same operationId. Each API must be imported qualified false
allowToJsonNulls allow emitting JSON Null during model encoding to JSON false
allowUnicodeIdentifiers boolean, toggles whether unicode identifiers are allowed in names or not, default is false false
baseModule Set the base module namespace null
cabalPackage Set the cabal package name, which consists of one or more alphanumeric words separated by hyphens null
cabalVersion Set the cabal version number, consisting of a sequence of one or more integers separated by dots null
configType Set the name of the type used for configuration null
customTestInstanceModule test module used to provide typeclass instances for types not known by the generator null
dateFormat format string used to parse/render a date %Y-%m-%d
dateTimeFormat format string used to parse/render a datetime null
dateTimeParseFormat overrides the format string used to parse a datetime null
disallowAdditionalPropertiesIfNotPresent If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.
false
The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.
true
Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.
true
ensureUniqueParams Whether to ensure parameter names are unique in an operation (rename parameters that are not). true
enumUnknownDefaultCase If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.
false
No changes to the enum's are made, this is the default option.
true
With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.
false
generateEnums Generate specific datatypes for OpenAPI enums true
generateFormUrlEncodedInstances Generate FromForm/ToForm instances for models that are used by operations that produce or consume application/x-www-form-urlencoded true
generateLenses Generate Lens optics for Models true
generateModelConstructors Generate smart constructors (only supply required fields) for models true
hideGenerationTimestamp Hides the generation timestamp when files are generated. true
inlineMimeTypes Inline (hardcode) the content-type and accept parameters on operations, when there is only 1 option true
legacyDiscriminatorBehavior Set to false for generators with better support for discriminators. (Python, Java, Go, PowerShell, C# have this enabled by default).
true
The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document.
false
The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document AND Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing.
true
modelDeriving Additional classes to include in the deriving() clause of Models null
prependFormOrBodyParameters Add form or body parameters to the beginning of the parameter list. false
queryExtraUnreserved Configures additional querystring characters which must not be URI encoded, e.g. '+' or ':' null
requestType Set the name of the type used to generate requests null
sortModelPropertiesByRequiredFlag Sort model properties to place required parameters before optional parameters. true
sortParamsByRequiredFlag Sort method arguments to place required parameters before optional parameters. true
strictFields Add strictness annotations to all model fields true
useKatip Sets the default value for the UseKatip cabal flag. If true, the katip package provides logging instead of monad-logger true

IMPORT MAPPING

Type/Alias Imports

INSTANTIATION TYPES

Type/Alias Instantiated By

LANGUAGE PRIMITIVES

  • Bool
  • Char
  • Double
  • FilePath
  • Float
  • Int
  • Integer
  • List
  • String
  • Text

RESERVED WORDS

  • accept
  • as
  • case
  • class
  • contenttype
  • data
  • default
  • deriving
  • do
  • else
  • family
  • forall
  • foreign
  • hiding
  • if
  • import
  • in
  • infix
  • infixl
  • infixr
  • instance
  • let
  • mdo
  • module
  • newtype
  • of
  • proc
  • pure
  • qualified
  • rec
  • return
  • then
  • type
  • where

FEATURE SET

Client Modification Feature

Name Supported Defined By
BasePath ToolingExtension
Authorizations ToolingExtension
UserAgent ToolingExtension
MockServer ToolingExtension

Data Type Feature

Name Supported Defined By
Custom OAS2,OAS3
Int32 OAS2,OAS3
Int64 OAS2,OAS3
Float OAS2,OAS3
Double OAS2,OAS3
Decimal ToolingExtension
String OAS2,OAS3
Byte OAS2,OAS3
Binary OAS2,OAS3
Boolean OAS2,OAS3
Date OAS2,OAS3
DateTime OAS2,OAS3
Password OAS2,OAS3
File OAS2
Uuid
Array OAS2,OAS3
Null OAS3
AnyType OAS2,OAS3
Object OAS2,OAS3
Maps ToolingExtension
CollectionFormat OAS2
CollectionFormatMulti OAS2
Enum OAS2,OAS3
ArrayOfEnum ToolingExtension
ArrayOfModel ToolingExtension
ArrayOfCollectionOfPrimitives ToolingExtension
ArrayOfCollectionOfModel ToolingExtension
ArrayOfCollectionOfEnum ToolingExtension
MapOfEnum ToolingExtension
MapOfModel ToolingExtension
MapOfCollectionOfPrimitives ToolingExtension
MapOfCollectionOfModel ToolingExtension
MapOfCollectionOfEnum ToolingExtension

Documentation Feature

Name Supported Defined By
Readme ToolingExtension
Model ToolingExtension
Api ToolingExtension

Global Feature

Name Supported Defined By
Host OAS2,OAS3
BasePath OAS2,OAS3
Info OAS2,OAS3
Schemes OAS2,OAS3
PartialSchemes OAS2,OAS3
Consumes OAS2
Produces OAS2
ExternalDocumentation OAS2,OAS3
Examples OAS2,OAS3
XMLStructureDefinitions OAS2,OAS3
MultiServer OAS3
ParameterizedServer OAS3
ParameterStyling OAS3
Callbacks OAS3
LinkObjects OAS3

Parameter Feature

Name Supported Defined By
Path OAS2,OAS3
Query OAS2,OAS3
Header OAS2,OAS3
Body OAS2
FormUnencoded OAS2
FormMultipart OAS2
Cookie OAS3

Schema Support Feature

Name Supported Defined By
Simple OAS2,OAS3
Composite OAS2,OAS3
Polymorphism OAS2,OAS3
Union OAS3
allOf OAS2,OAS3
anyOf OAS3
oneOf OAS3
not OAS3

Security Feature

Name Supported Defined By
BasicAuth OAS2,OAS3
ApiKey OAS2,OAS3
OpenIDConnect OAS3
BearerToken OAS3
OAuth2_Implicit OAS2,OAS3
OAuth2_Password OAS2,OAS3
OAuth2_ClientCredentials OAS2,OAS3
OAuth2_AuthorizationCode OAS2,OAS3
SignatureAuth OAS3
AWSV4Signature ToolingExtension

Wire Format Feature

Name Supported Defined By
JSON OAS2,OAS3
XML OAS2,OAS3
PROTOBUF ToolingExtension
Custom OAS2,OAS3