Copyright	© 2018-2021 IOHK
License	Apache-2.0
Safe Haskell	None
Language	Haskell2010

Cardano.Wallet.TokenMetadata

Contents

Associating metadata with assets
Token Metadata Client
Logging
Generic metadata server client
Parsing
Orphan instances

Description

A client used to query asset metadata from the Cardano metadata-server.

The OpenAPI specification is here: https://github.com/input-output-hk/metadata-server/blob/master/specifications/api/openapi.yaml

An important consideration is that cardano-wallet should not trust the metadata-server operator to produce correct, valid, authentic, or even non-malicious data.

In future, signatures of property values will be checked to determine authenticity. The exact details are not yet specified.

In any case, we should not rely on the validation that the metadata-server may or may not have applied to the user-supplied metadata.

Synopsis

fillMetadata :: ( Foldable t, Functor t) => TokenMetadataClient IO -> t AssetId -> ( Either TokenMetadataError ( Maybe AssetMetadata ) -> AssetId -> a) -> IO (t a)
data TokenMetadataClient m
newMetadataClient :: Tracer IO TokenMetadataLog -> Maybe TokenMetadataServer -> IO ( TokenMetadataClient IO )
getTokenMetadata :: TokenMetadataClient IO -> [ AssetId ] -> IO ( Either TokenMetadataError [( AssetId , AssetMetadata )])
data TokenMetadataError
data TokenMetadataLog
metadataClient :: Tracer IO TokenMetadataLog -> TokenMetadataServer -> Manager -> BatchRequest -> IO ( Either TokenMetadataError BatchResponse )
data BatchRequest = BatchRequest {
- subjects :: [ Subject ]
- properties :: [ PropertyName ]
}
newtype BatchResponse = BatchResponse {
- getBatchResponse :: [ SubjectProperties ]
}
data SubjectProperties = SubjectProperties {
- subject :: Subject
- owner :: Maybe Signature
- properties :: ( Maybe ( Property "name"), Maybe ( Property "description"), Maybe ( Property "ticker"), Maybe ( Property "url"), Maybe ( Property "logo"), Maybe ( Property "decimals"))
}
data Property name = Property {
- value :: Either ( String , Value ) ( PropertyValue name)
- signatures :: [ Signature ]
- sequenceNumber :: Int
}
newtype PropertyName = PropertyName {
- unPropertyName :: Text
}
propertyName :: forall name. KnownSymbol name => Property name -> PropertyName
type family PropertyValue (name :: Symbol ) :: Type
newtype Subject = Subject {
- unSubject :: Text
}
data Signature = Signature {
- signature :: ByteString
- publicKey :: ByteString
}
metadataFromProperties :: SubjectProperties -> Maybe AssetMetadata

Associating metadata with assets

fillMetadata :: ( Foldable t, Functor t) => TokenMetadataClient IO -> t AssetId -> ( Either TokenMetadataError ( Maybe AssetMetadata ) -> AssetId -> a) -> IO (t a) Source #

Helper for adding metadata to sets of assets.

Token Metadata Client

data TokenMetadataClient m Source #

Represents a client for the metadata server.

newMetadataClient Source #

Arguments

:: Tracer IO TokenMetadataLog	Logging
-> Maybe TokenMetadataServer	URL of metadata server, if enabled.
-> IO ( TokenMetadataClient IO )

Construct a TokenMetadataClient for use with getTokenMetadata .

getTokenMetadata :: TokenMetadataClient IO -> [ AssetId ] -> IO ( Either TokenMetadataError [( AssetId , AssetMetadata )]) Source #

Fetches metadata for a list of assets using the given client.

data TokenMetadataError Source #

The possible errors which can occur when fetching metadata.

Constructors

TokenMetadataClientError ( LoggedException SomeException )	Unhandled exception
TokenMetadataFetchError ( LoggedException HttpException )	Error with HTTP request
TokenMetadataJSONParseError ByteString String	Error from aeson decoding of JSON

Instances

Instances details

Eq TokenMetadataError Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: TokenMetadataError -> TokenMetadataError -> Bool Source # (/=) :: TokenMetadataError -> TokenMetadataError -> Bool Source #
Show TokenMetadataError Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> TokenMetadataError -> ShowS Source # show :: TokenMetadataError -> String Source # showList :: [ TokenMetadataError ] -> ShowS Source #
Generic TokenMetadataError Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep TokenMetadataError :: Type -> Type Source # Methods from :: TokenMetadataError -> Rep TokenMetadataError x Source # to :: Rep TokenMetadataError x -> TokenMetadataError Source #
NFData TokenMetadataError Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods rnf :: TokenMetadataError -> () Source #
ToText TokenMetadataError Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods toText :: TokenMetadataError -> Text Source #
type Rep TokenMetadataError Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep TokenMetadataError = D1 (' MetaData "TokenMetadataError" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' False ) ( C1 (' MetaCons "TokenMetadataClientError" ' PrefixI ' False ) ( S1 (' MetaSel (' Nothing :: Maybe Symbol ) ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ( LoggedException SomeException ))) :+: ( C1 (' MetaCons "TokenMetadataFetchError" ' PrefixI ' False ) ( S1 (' MetaSel (' Nothing :: Maybe Symbol ) ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ( LoggedException HttpException ))) :+: C1 (' MetaCons "TokenMetadataJSONParseError" ' PrefixI ' False ) ( S1 (' MetaSel (' Nothing :: Maybe Symbol ) ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ByteString ) :*: S1 (' MetaSel (' Nothing :: Maybe Symbol ) ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 String ))))

Logging

data TokenMetadataLog Source #

Constructors

MsgNotConfigured
MsgFetchRequest BatchRequest BracketLog
MsgFetchRequestBody URI ByteString
MsgFetchMetadataMaxSize Int
MsgFetchResult BatchRequest ( Either TokenMetadataError BatchResponse )
MsgFetchMetadataTime BatchRequest DiffTime

Instances

Instances details

Eq TokenMetadataLog Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: TokenMetadataLog -> TokenMetadataLog -> Bool Source # (/=) :: TokenMetadataLog -> TokenMetadataLog -> Bool Source #
Show TokenMetadataLog Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> TokenMetadataLog -> ShowS Source # show :: TokenMetadataLog -> String Source # showList :: [ TokenMetadataLog ] -> ShowS Source #
ToText TokenMetadataLog Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods toText :: TokenMetadataLog -> Text Source #
HasPrivacyAnnotation TokenMetadataLog Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods getPrivacyAnnotation :: TokenMetadataLog -> PrivacyAnnotation
HasSeverityAnnotation TokenMetadataLog Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods getSeverityAnnotation :: TokenMetadataLog -> Severity

Generic metadata server client

metadataClient :: Tracer IO TokenMetadataLog -> TokenMetadataServer -> Manager -> BatchRequest -> IO ( Either TokenMetadataError BatchResponse ) Source #

data BatchRequest Source #

Models a request to the POST metadata query endpoint of the metadata server -- the only one that we need.

Constructors

BatchRequest
Fields subjects :: [ Subject ] properties :: [ PropertyName ]

Instances

Instances details

Eq BatchRequest Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: BatchRequest -> BatchRequest -> Bool Source # (/=) :: BatchRequest -> BatchRequest -> Bool Source #
Show BatchRequest Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> BatchRequest -> ShowS Source # show :: BatchRequest -> String Source # showList :: [ BatchRequest ] -> ShowS Source #
Generic BatchRequest Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep BatchRequest :: Type -> Type Source # Methods from :: BatchRequest -> Rep BatchRequest x Source # to :: Rep BatchRequest x -> BatchRequest Source #
ToJSON BatchRequest Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods toJSON :: BatchRequest -> Value Source # toEncoding :: BatchRequest -> Encoding Source # toJSONList :: [ BatchRequest ] -> Value Source # toEncodingList :: [ BatchRequest ] -> Encoding Source #
FromJSON BatchRequest Source #
Instance details Defined in Cardano.Wallet.TokenMetadata.MockServer Methods parseJSON :: Value -> Parser BatchRequest Source # parseJSONList :: Value -> Parser [ BatchRequest ] Source #
type Rep BatchRequest Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep BatchRequest = D1 (' MetaData "BatchRequest" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' False ) ( C1 (' MetaCons "BatchRequest" ' PrefixI ' True ) ( S1 (' MetaSel (' Just "subjects") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 [ Subject ]) :*: S1 (' MetaSel (' Just "properties") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 [ PropertyName ])))

newtype BatchResponse Source #

Models the response from the POST metadata query endpoint of the metadata server. This should contain properties each subject in the BatchRequest .

Constructors

BatchResponse
Fields getBatchResponse :: [ SubjectProperties ]

Instances

Instances details

Eq BatchResponse Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: BatchResponse -> BatchResponse -> Bool Source # (/=) :: BatchResponse -> BatchResponse -> Bool Source #
Show BatchResponse Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> BatchResponse -> ShowS Source # show :: BatchResponse -> String Source # showList :: [ BatchResponse ] -> ShowS Source #
Generic BatchResponse Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep BatchResponse :: Type -> Type Source # Methods from :: BatchResponse -> Rep BatchResponse x Source # to :: Rep BatchResponse x -> BatchResponse Source #
ToJSON BatchResponse Source #
Instance details Defined in Cardano.Wallet.TokenMetadata.MockServer Methods toJSON :: BatchResponse -> Value Source # toEncoding :: BatchResponse -> Encoding Source # toJSONList :: [ BatchResponse ] -> Value Source # toEncodingList :: [ BatchResponse ] -> Encoding Source #
FromJSON BatchResponse Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods parseJSON :: Value -> Parser BatchResponse Source # parseJSONList :: Value -> Parser [ BatchResponse ] Source #
type Rep BatchResponse Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep BatchResponse = D1 (' MetaData "BatchResponse" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' True ) ( C1 (' MetaCons "BatchResponse" ' PrefixI ' True ) ( S1 (' MetaSel (' Just "getBatchResponse") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 [ SubjectProperties ])))

data SubjectProperties Source #

Property values and signatures for a given subject.

Constructors

SubjectProperties
Fields subject :: Subject owner :: Maybe Signature properties :: ( Maybe ( Property "name"), Maybe ( Property "description"), Maybe ( Property "ticker"), Maybe ( Property "url"), Maybe ( Property "logo"), Maybe ( Property "decimals"))

Instances

Instances details

Eq SubjectProperties Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: SubjectProperties -> SubjectProperties -> Bool Source # (/=) :: SubjectProperties -> SubjectProperties -> Bool Source #
Show SubjectProperties Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> SubjectProperties -> ShowS Source # show :: SubjectProperties -> String Source # showList :: [ SubjectProperties ] -> ShowS Source #
Generic SubjectProperties Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep SubjectProperties :: Type -> Type Source # Methods from :: SubjectProperties -> Rep SubjectProperties x Source # to :: Rep SubjectProperties x -> SubjectProperties Source #
ToJSON SubjectProperties Source #
Instance details Defined in Cardano.Wallet.TokenMetadata.MockServer Methods toJSON :: SubjectProperties -> Value Source # toEncoding :: SubjectProperties -> Encoding Source # toJSONList :: [ SubjectProperties ] -> Value Source # toEncodingList :: [ SubjectProperties ] -> Encoding Source #
FromJSON SubjectProperties Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods parseJSON :: Value -> Parser SubjectProperties Source # parseJSONList :: Value -> Parser [ SubjectProperties ] Source #
type Rep SubjectProperties Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep SubjectProperties = D1 (' MetaData "SubjectProperties" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' False ) ( C1 (' MetaCons "SubjectProperties" ' PrefixI ' True ) ( S1 (' MetaSel (' Just "subject") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 Subject ) :: ( S1 (' MetaSel (' Just "owner") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ( Maybe Signature )) :: S1 (' MetaSel (' Just "properties") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ( Maybe ( Property "name"), Maybe ( Property "description"), Maybe ( Property "ticker"), Maybe ( Property "url"), Maybe ( Property "logo"), Maybe ( Property "decimals"))))))

data Property name Source #

A property value and its signatures.

Constructors

Property
Fields value :: Either ( String , Value ) ( PropertyValue name) The result of JSON parsing and validating the property value. signatures :: [ Signature ] Zero or more signatures of the property value. sequenceNumber :: Int Counter to prevent replaying old signatures.

Instances

Instances details

Eq ( PropertyValue name) => Eq ( Property name) Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: Property name -> Property name -> Bool Source # (/=) :: Property name -> Property name -> Bool Source #
Show ( PropertyValue name) => Show ( Property name) Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> Property name -> ShowS Source # show :: Property name -> String Source # showList :: [ Property name] -> ShowS Source #
Generic ( Property name) Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep ( Property name) :: Type -> Type Source # Methods from :: Property name -> Rep ( Property name) x Source # to :: Rep ( Property name) x -> Property name Source #
ToJSON ( PropertyValue name) => ToJSON ( Property name) Source #
Instance details Defined in Cardano.Wallet.TokenMetadata.MockServer Methods toJSON :: Property name -> Value Source # toEncoding :: Property name -> Encoding Source # toJSONList :: [ Property name] -> Value Source # toEncodingList :: [ Property name] -> Encoding Source #
(HasValidator name, FromJSON ( PropertyValue name)) => FromJSON ( Property name) Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods parseJSON :: Value -> Parser ( Property name) Source # parseJSONList :: Value -> Parser [ Property name] Source #
type Rep ( Property name) Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep ( Property name) = D1 (' MetaData "Property" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' False ) ( C1 (' MetaCons "Property" ' PrefixI ' True ) ( S1 (' MetaSel (' Just "value") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ( Either ( String , Value ) ( PropertyValue name))) :: ( S1 (' MetaSel (' Just "signatures") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 [ Signature ]) :: S1 (' MetaSel (' Just "sequenceNumber") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 Int ))))

newtype PropertyName Source #

Metadata property identifier.

Constructors

PropertyName
Fields unPropertyName :: Text

Instances

Instances details

Eq PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: PropertyName -> PropertyName -> Bool Source # (/=) :: PropertyName -> PropertyName -> Bool Source #
Show PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> PropertyName -> ShowS Source # show :: PropertyName -> String Source # showList :: [ PropertyName ] -> ShowS Source #
IsString PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods fromString :: String -> PropertyName Source #
Generic PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep PropertyName :: Type -> Type Source # Methods from :: PropertyName -> Rep PropertyName x Source # to :: Rep PropertyName x -> PropertyName Source #
Hashable PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods hashWithSalt :: Int -> PropertyName -> Int Source # hash :: PropertyName -> Int Source #
ToJSON PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods toJSON :: PropertyName -> Value Source # toEncoding :: PropertyName -> Encoding Source # toJSONList :: [ PropertyName ] -> Value Source # toEncodingList :: [ PropertyName ] -> Encoding Source #
FromJSON PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods parseJSON :: Value -> Parser PropertyName Source # parseJSONList :: Value -> Parser [ PropertyName ] Source #
type Rep PropertyName Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep PropertyName = D1 (' MetaData "PropertyName" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' True ) ( C1 (' MetaCons "PropertyName" ' PrefixI ' True ) ( S1 (' MetaSel (' Just "unPropertyName") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 Text )))

propertyName :: forall name. KnownSymbol name => Property name -> PropertyName Source #

type family PropertyValue (name :: Symbol ) :: Type Source #

The type of a given property name.

Instances

Instances details

type PropertyValue "decimals" Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type PropertyValue "decimals" = AssetDecimals
type PropertyValue "description" Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type PropertyValue "description" = Text
type PropertyValue "logo" Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type PropertyValue "logo" = AssetLogo
type PropertyValue "name" Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type PropertyValue "name" = Text
type PropertyValue "ticker" Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type PropertyValue "ticker" = Text
type PropertyValue "url" Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type PropertyValue "url" = AssetURL

newtype Subject Source #

A metadata server subject, which can be any string.

Constructors

Subject
Fields unSubject :: Text

Instances

Instances details

Eq Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: Subject -> Subject -> Bool Source # (/=) :: Subject -> Subject -> Bool Source #
Ord Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods compare :: Subject -> Subject -> Ordering Source # (<) :: Subject -> Subject -> Bool Source # (<=) :: Subject -> Subject -> Bool Source # (>) :: Subject -> Subject -> Bool Source # (>=) :: Subject -> Subject -> Bool Source # max :: Subject -> Subject -> Subject Source # min :: Subject -> Subject -> Subject Source #
Show Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> Subject -> ShowS Source # show :: Subject -> String Source # showList :: [ Subject ] -> ShowS Source #
IsString Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods fromString :: String -> Subject Source #
Generic Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep Subject :: Type -> Type Source # Methods from :: Subject -> Rep Subject x Source # to :: Rep Subject x -> Subject Source #
Hashable Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods hashWithSalt :: Int -> Subject -> Int Source # hash :: Subject -> Int Source #
ToJSON Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods toJSON :: Subject -> Value Source # toEncoding :: Subject -> Encoding Source # toJSONList :: [ Subject ] -> Value Source # toEncodingList :: [ Subject ] -> Encoding Source #
FromJSON Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods parseJSON :: Value -> Parser Subject Source # parseJSONList :: Value -> Parser [ Subject ] Source #
type Rep Subject Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep Subject = D1 (' MetaData "Subject" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' True ) ( C1 (' MetaCons "Subject" ' PrefixI ' True ) ( S1 (' MetaSel (' Just "unSubject") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 Text )))

data Signature Source #

Will be used in future for checking integrity and authenticity of metadata.

Constructors

Signature
Fields signature :: ByteString publicKey :: ByteString

Instances

Instances details

Eq Signature Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods (==) :: Signature -> Signature -> Bool Source # (/=) :: Signature -> Signature -> Bool Source #
Show Signature Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods showsPrec :: Int -> Signature -> ShowS Source # show :: Signature -> String Source # showList :: [ Signature ] -> ShowS Source #
Generic Signature Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Associated Types type Rep Signature :: Type -> Type Source # Methods from :: Signature -> Rep Signature x Source # to :: Rep Signature x -> Signature Source #
ToJSON Signature Source #
Instance details Defined in Cardano.Wallet.TokenMetadata.MockServer Methods toJSON :: Signature -> Value Source # toEncoding :: Signature -> Encoding Source # toJSONList :: [ Signature ] -> Value Source # toEncodingList :: [ Signature ] -> Encoding Source #
FromJSON Signature Source #
Instance details Defined in Cardano.Wallet.TokenMetadata Methods parseJSON :: Value -> Parser Signature Source # parseJSONList :: Value -> Parser [ Signature ] Source #
type Rep Signature Source #
Instance details Defined in Cardano.Wallet.TokenMetadata type Rep Signature = D1 (' MetaData "Signature" "Cardano.Wallet.TokenMetadata" "cardano-wallet-core-2022.7.1-AGKhlyz9liLKN3QqZD1gj" ' False ) ( C1 (' MetaCons "Signature" ' PrefixI ' True ) ( S1 (' MetaSel (' Just "signature") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ByteString ) :*: S1 (' MetaSel (' Just "publicKey") ' NoSourceUnpackedness ' NoSourceStrictness ' DecidedLazy ) ( Rec0 ByteString )))

Parsing

metadataFromProperties :: SubjectProperties -> Maybe AssetMetadata Source #

Convert metadata server properties response into an AssetMetadata record. Only the values are taken. Signatures are ignored (for now).

Orphan instances

FromJSON AssetDecimals Source #
Instance details Methods parseJSON :: Value -> Parser AssetDecimals Source # parseJSONList :: Value -> Parser [ AssetDecimals ] Source #
FromJSON AssetURL Source #
Instance details Methods parseJSON :: Value -> Parser AssetURL Source # parseJSONList :: Value -> Parser [ AssetURL ] Source #
FromJSON AssetLogo Source #
Instance details Methods parseJSON :: Value -> Parser AssetLogo Source # parseJSONList :: Value -> Parser [ AssetLogo ] Source #