Amazonka.IoTData.Types.RetainedMessageSummary

Documentation

data RetainedMessageSummary

Information about a single retained message.

See: newRetainedMessageSummary smart constructor.

Constructors

RetainedMessageSummary'

Fields

• lastModifiedTime :: Maybe Integer

  The Epoch date and time, in milliseconds, when the retained message was stored by IoT.

• payloadSize :: Maybe Integer

  The size of the retained message's payload in bytes.

• qos :: Maybe Natural

  The quality of service (QoS) level used to publish the retained message.

• topic :: Maybe Text

  The topic name to which the retained message was published.

Instances

FromJSON RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

Methods

parseJSON :: Value -> Parser RetainedMessageSummary

parseJSONList :: Value -> Parser [RetainedMessageSummary]

Generic RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

Associated Types

type Rep RetainedMessageSummary :: Type -> Type

Methods

from :: RetainedMessageSummary -> Rep RetainedMessageSummary x

to :: Rep RetainedMessageSummary x -> RetainedMessageSummary

Read RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

Methods

readsPrec :: Int -> ReadS RetainedMessageSummary

readList :: ReadS [RetainedMessageSummary]

readPrec :: ReadPrec RetainedMessageSummary

readListPrec :: ReadPrec [RetainedMessageSummary]

Show RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

Methods

showsPrec :: Int -> RetainedMessageSummary -> ShowS

show :: RetainedMessageSummary -> String

showList :: [RetainedMessageSummary] -> ShowS

NFData RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

Methods

rnf :: RetainedMessageSummary -> ()

Eq RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

Methods

(==) :: RetainedMessageSummary -> RetainedMessageSummary -> Bool

(/=) :: RetainedMessageSummary -> RetainedMessageSummary -> Bool

Hashable RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

Methods

hashWithSalt :: Int -> RetainedMessageSummary -> Int

hash :: RetainedMessageSummary -> Int

type Rep RetainedMessageSummary

Defined in Amazonka.IoTData.Types.RetainedMessageSummary

type Rep RetainedMessageSummary = D1 ('MetaData "RetainedMessageSummary" "Amazonka.IoTData.Types.RetainedMessageSummary" "amazonka-iot-dataplane-2.0-Fdc9p3E1INX2O9pOv9RFV7" 'False) (C1 ('MetaCons "RetainedMessageSummary'" 'PrefixI 'True) ((S1 ('MetaSel ('Just "lastModifiedTime") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Integer)) :*: S1 ('MetaSel ('Just "payloadSize") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Integer))) :*: (S1 ('MetaSel ('Just "qos") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Natural)) :*: S1 ('MetaSel ('Just "topic") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedStrict) (Rec0 (Maybe Text)))))

newRetainedMessageSummary :: RetainedMessageSummary

Create a value of RetainedMessageSummary with all optional fields omitted.

Use generic-lens or optics to modify other optional fields.

The following record fields are available, with the corresponding lenses provided for backwards compatibility:

$sel:lastModifiedTime:RetainedMessageSummary', retainedMessageSummary_lastModifiedTime - The Epoch date and time, in milliseconds, when the retained message was stored by IoT.

$sel:payloadSize:RetainedMessageSummary', retainedMessageSummary_payloadSize - The size of the retained message's payload in bytes.

$sel:qos:RetainedMessageSummary', retainedMessageSummary_qos - The quality of service (QoS) level used to publish the retained message.

$sel:topic:RetainedMessageSummary', retainedMessageSummary_topic - The topic name to which the retained message was published.

retainedMessageSummary_lastModifiedTime :: Lens' RetainedMessageSummary (Maybe Integer)

The Epoch date and time, in milliseconds, when the retained message was stored by IoT.

retainedMessageSummary_payloadSize :: Lens' RetainedMessageSummary (Maybe Integer)

The size of the retained message's payload in bytes.

retainedMessageSummary_qos :: Lens' RetainedMessageSummary (Maybe Natural)

The quality of service (QoS) level used to publish the retained message.

retainedMessageSummary_topic :: Lens' RetainedMessageSummary (Maybe Text)

The topic name to which the retained message was published.