{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StrictData #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE NoImplicitPrelude #-}
{-# OPTIONS_GHC -fno-warn-unused-binds #-}
{-# OPTIONS_GHC -fno-warn-unused-imports #-}
{-# OPTIONS_GHC -fno-warn-unused-matches #-}

-- Derived from AWS service descriptions, licensed under Apache 2.0.

-- |
-- Module      : Amazonka.ELB.DescribeInstanceHealth
-- Copyright   : (c) 2013-2023 Brendan Hay
-- License     : Mozilla Public License, v. 2.0.
-- Maintainer  : Brendan Hay
-- Stability   : auto-generated
-- Portability : non-portable (GHC extensions)
--
-- Describes the state of the specified instances with respect to the
-- specified load balancer. If no instances are specified, the call
-- describes the state of all instances that are currently registered with
-- the load balancer. If instances are specified, their state is returned
-- even if they are no longer registered with the load balancer. The state
-- of terminated instances is not returned.
module Amazonka.ELB.DescribeInstanceHealth
  ( -- * Creating a Request
    DescribeInstanceHealth (..),
    newDescribeInstanceHealth,

    -- * Request Lenses
    describeInstanceHealth_instances,
    describeInstanceHealth_loadBalancerName,

    -- * Destructuring the Response
    DescribeInstanceHealthResponse (..),
    newDescribeInstanceHealthResponse,

    -- * Response Lenses
    describeInstanceHealthResponse_instanceStates,
    describeInstanceHealthResponse_httpStatus,
  )
where

import qualified Amazonka.Core as Core
import qualified Amazonka.Core.Lens.Internal as Lens
import qualified Amazonka.Data as Data
import Amazonka.ELB.Types
import qualified Amazonka.Prelude as Prelude
import qualified Amazonka.Request as Request
import qualified Amazonka.Response as Response

-- | Contains the parameters for DescribeInstanceHealth.
--
-- /See:/ 'newDescribeInstanceHealth' smart constructor.
data DescribeInstanceHealth = DescribeInstanceHealth'
  { -- | The IDs of the instances.
    DescribeInstanceHealth -> Maybe [Instance]
instances :: Prelude.Maybe [Instance],
    -- | The name of the load balancer.
    DescribeInstanceHealth -> Text
loadBalancerName :: Prelude.Text
  }
  deriving (DescribeInstanceHealth -> DescribeInstanceHealth -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: DescribeInstanceHealth -> DescribeInstanceHealth -> Bool
$c/= :: DescribeInstanceHealth -> DescribeInstanceHealth -> Bool
== :: DescribeInstanceHealth -> DescribeInstanceHealth -> Bool
$c== :: DescribeInstanceHealth -> DescribeInstanceHealth -> Bool
Prelude.Eq, ReadPrec [DescribeInstanceHealth]
ReadPrec DescribeInstanceHealth
Int -> ReadS DescribeInstanceHealth
ReadS [DescribeInstanceHealth]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [DescribeInstanceHealth]
$creadListPrec :: ReadPrec [DescribeInstanceHealth]
readPrec :: ReadPrec DescribeInstanceHealth
$creadPrec :: ReadPrec DescribeInstanceHealth
readList :: ReadS [DescribeInstanceHealth]
$creadList :: ReadS [DescribeInstanceHealth]
readsPrec :: Int -> ReadS DescribeInstanceHealth
$creadsPrec :: Int -> ReadS DescribeInstanceHealth
Prelude.Read, Int -> DescribeInstanceHealth -> ShowS
[DescribeInstanceHealth] -> ShowS
DescribeInstanceHealth -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [DescribeInstanceHealth] -> ShowS
$cshowList :: [DescribeInstanceHealth] -> ShowS
show :: DescribeInstanceHealth -> String
$cshow :: DescribeInstanceHealth -> String
showsPrec :: Int -> DescribeInstanceHealth -> ShowS
$cshowsPrec :: Int -> DescribeInstanceHealth -> ShowS
Prelude.Show, forall x. Rep DescribeInstanceHealth x -> DescribeInstanceHealth
forall x. DescribeInstanceHealth -> Rep DescribeInstanceHealth x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep DescribeInstanceHealth x -> DescribeInstanceHealth
$cfrom :: forall x. DescribeInstanceHealth -> Rep DescribeInstanceHealth x
Prelude.Generic)

-- |
-- Create a value of 'DescribeInstanceHealth' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'instances', 'describeInstanceHealth_instances' - The IDs of the instances.
--
-- 'loadBalancerName', 'describeInstanceHealth_loadBalancerName' - The name of the load balancer.
newDescribeInstanceHealth ::
  -- | 'loadBalancerName'
  Prelude.Text ->
  DescribeInstanceHealth
newDescribeInstanceHealth :: Text -> DescribeInstanceHealth
newDescribeInstanceHealth Text
pLoadBalancerName_ =
  DescribeInstanceHealth'
    { $sel:instances:DescribeInstanceHealth' :: Maybe [Instance]
instances =
        forall a. Maybe a
Prelude.Nothing,
      $sel:loadBalancerName:DescribeInstanceHealth' :: Text
loadBalancerName = Text
pLoadBalancerName_
    }

-- | The IDs of the instances.
describeInstanceHealth_instances :: Lens.Lens' DescribeInstanceHealth (Prelude.Maybe [Instance])
describeInstanceHealth_instances :: Lens' DescribeInstanceHealth (Maybe [Instance])
describeInstanceHealth_instances = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\DescribeInstanceHealth' {Maybe [Instance]
instances :: Maybe [Instance]
$sel:instances:DescribeInstanceHealth' :: DescribeInstanceHealth -> Maybe [Instance]
instances} -> Maybe [Instance]
instances) (\s :: DescribeInstanceHealth
s@DescribeInstanceHealth' {} Maybe [Instance]
a -> DescribeInstanceHealth
s {$sel:instances:DescribeInstanceHealth' :: Maybe [Instance]
instances = Maybe [Instance]
a} :: DescribeInstanceHealth) forall b c a. (b -> c) -> (a -> b) -> a -> c
Prelude.. forall (f :: * -> *) (g :: * -> *) s t a b.
(Functor f, Functor g) =>
AnIso s t a b -> Iso (f s) (g t) (f a) (g b)
Lens.mapping forall s t a b. (Coercible s a, Coercible t b) => Iso s t a b
Lens.coerced

-- | The name of the load balancer.
describeInstanceHealth_loadBalancerName :: Lens.Lens' DescribeInstanceHealth Prelude.Text
describeInstanceHealth_loadBalancerName :: Lens' DescribeInstanceHealth Text
describeInstanceHealth_loadBalancerName = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\DescribeInstanceHealth' {Text
loadBalancerName :: Text
$sel:loadBalancerName:DescribeInstanceHealth' :: DescribeInstanceHealth -> Text
loadBalancerName} -> Text
loadBalancerName) (\s :: DescribeInstanceHealth
s@DescribeInstanceHealth' {} Text
a -> DescribeInstanceHealth
s {$sel:loadBalancerName:DescribeInstanceHealth' :: Text
loadBalancerName = Text
a} :: DescribeInstanceHealth)

instance Core.AWSRequest DescribeInstanceHealth where
  type
    AWSResponse DescribeInstanceHealth =
      DescribeInstanceHealthResponse
  request :: (Service -> Service)
-> DescribeInstanceHealth -> Request DescribeInstanceHealth
request Service -> Service
overrides =
    forall a. ToRequest a => Service -> a -> Request a
Request.postQuery (Service -> Service
overrides Service
defaultService)
  response :: forall (m :: * -> *).
MonadResource m =>
(ByteStringLazy -> IO ByteStringLazy)
-> Service
-> Proxy DescribeInstanceHealth
-> ClientResponse ClientBody
-> m (Either
        Error (ClientResponse (AWSResponse DescribeInstanceHealth)))
response =
    forall (m :: * -> *) a.
MonadResource m =>
Text
-> (Int
    -> ResponseHeaders -> [Node] -> Either String (AWSResponse a))
-> (ByteStringLazy -> IO ByteStringLazy)
-> Service
-> Proxy a
-> ClientResponse ClientBody
-> m (Either Error (ClientResponse (AWSResponse a)))
Response.receiveXMLWrapper
      Text
"DescribeInstanceHealthResult"
      ( \Int
s ResponseHeaders
h [Node]
x ->
          Maybe [InstanceState] -> Int -> DescribeInstanceHealthResponse
DescribeInstanceHealthResponse'
            forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> ( [Node]
x
                            forall a. FromXML a => [Node] -> Text -> Either String (Maybe a)
Data..@? Text
"InstanceStates"
                            forall (f :: * -> *) a. Functor f => f (Maybe a) -> a -> f a
Core..!@ forall a. Monoid a => a
Prelude.mempty
                            forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
Prelude.>>= forall (f :: * -> *) a b.
Applicative f =>
([a] -> f b) -> [a] -> f (Maybe b)
Core.may (forall a. FromXML a => Text -> [Node] -> Either String [a]
Data.parseXMLList Text
"member")
                        )
            forall (f :: * -> *) a b. Applicative f => f (a -> b) -> f a -> f b
Prelude.<*> (forall (f :: * -> *) a. Applicative f => a -> f a
Prelude.pure (forall a. Enum a => a -> Int
Prelude.fromEnum Int
s))
      )

instance Prelude.Hashable DescribeInstanceHealth where
  hashWithSalt :: Int -> DescribeInstanceHealth -> Int
hashWithSalt Int
_salt DescribeInstanceHealth' {Maybe [Instance]
Text
loadBalancerName :: Text
instances :: Maybe [Instance]
$sel:loadBalancerName:DescribeInstanceHealth' :: DescribeInstanceHealth -> Text
$sel:instances:DescribeInstanceHealth' :: DescribeInstanceHealth -> Maybe [Instance]
..} =
    Int
_salt
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Maybe [Instance]
instances
      forall a. Hashable a => Int -> a -> Int
`Prelude.hashWithSalt` Text
loadBalancerName

instance Prelude.NFData DescribeInstanceHealth where
  rnf :: DescribeInstanceHealth -> ()
rnf DescribeInstanceHealth' {Maybe [Instance]
Text
loadBalancerName :: Text
instances :: Maybe [Instance]
$sel:loadBalancerName:DescribeInstanceHealth' :: DescribeInstanceHealth -> Text
$sel:instances:DescribeInstanceHealth' :: DescribeInstanceHealth -> Maybe [Instance]
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Maybe [Instance]
instances
      seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf Text
loadBalancerName

instance Data.ToHeaders DescribeInstanceHealth where
  toHeaders :: DescribeInstanceHealth -> ResponseHeaders
toHeaders = forall a b. a -> b -> a
Prelude.const forall a. Monoid a => a
Prelude.mempty

instance Data.ToPath DescribeInstanceHealth where
  toPath :: DescribeInstanceHealth -> ByteString
toPath = forall a b. a -> b -> a
Prelude.const ByteString
"/"

instance Data.ToQuery DescribeInstanceHealth where
  toQuery :: DescribeInstanceHealth -> QueryString
toQuery DescribeInstanceHealth' {Maybe [Instance]
Text
loadBalancerName :: Text
instances :: Maybe [Instance]
$sel:loadBalancerName:DescribeInstanceHealth' :: DescribeInstanceHealth -> Text
$sel:instances:DescribeInstanceHealth' :: DescribeInstanceHealth -> Maybe [Instance]
..} =
    forall a. Monoid a => [a] -> a
Prelude.mconcat
      [ ByteString
"Action"
          forall a. ToQuery a => ByteString -> a -> QueryString
Data.=: (ByteString
"DescribeInstanceHealth" :: Prelude.ByteString),
        ByteString
"Version"
          forall a. ToQuery a => ByteString -> a -> QueryString
Data.=: (ByteString
"2012-06-01" :: Prelude.ByteString),
        ByteString
"Instances"
          forall a. ToQuery a => ByteString -> a -> QueryString
Data.=: forall a. ToQuery a => a -> QueryString
Data.toQuery
            (forall a.
(IsList a, ToQuery (Item a)) =>
ByteString -> a -> QueryString
Data.toQueryList ByteString
"member" forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
Prelude.<$> Maybe [Instance]
instances),
        ByteString
"LoadBalancerName" forall a. ToQuery a => ByteString -> a -> QueryString
Data.=: Text
loadBalancerName
      ]

-- | Contains the output for DescribeInstanceHealth.
--
-- /See:/ 'newDescribeInstanceHealthResponse' smart constructor.
data DescribeInstanceHealthResponse = DescribeInstanceHealthResponse'
  { -- | Information about the health of the instances.
    DescribeInstanceHealthResponse -> Maybe [InstanceState]
instanceStates :: Prelude.Maybe [InstanceState],
    -- | The response's http status code.
    DescribeInstanceHealthResponse -> Int
httpStatus :: Prelude.Int
  }
  deriving (DescribeInstanceHealthResponse
-> DescribeInstanceHealthResponse -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: DescribeInstanceHealthResponse
-> DescribeInstanceHealthResponse -> Bool
$c/= :: DescribeInstanceHealthResponse
-> DescribeInstanceHealthResponse -> Bool
== :: DescribeInstanceHealthResponse
-> DescribeInstanceHealthResponse -> Bool
$c== :: DescribeInstanceHealthResponse
-> DescribeInstanceHealthResponse -> Bool
Prelude.Eq, ReadPrec [DescribeInstanceHealthResponse]
ReadPrec DescribeInstanceHealthResponse
Int -> ReadS DescribeInstanceHealthResponse
ReadS [DescribeInstanceHealthResponse]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [DescribeInstanceHealthResponse]
$creadListPrec :: ReadPrec [DescribeInstanceHealthResponse]
readPrec :: ReadPrec DescribeInstanceHealthResponse
$creadPrec :: ReadPrec DescribeInstanceHealthResponse
readList :: ReadS [DescribeInstanceHealthResponse]
$creadList :: ReadS [DescribeInstanceHealthResponse]
readsPrec :: Int -> ReadS DescribeInstanceHealthResponse
$creadsPrec :: Int -> ReadS DescribeInstanceHealthResponse
Prelude.Read, Int -> DescribeInstanceHealthResponse -> ShowS
[DescribeInstanceHealthResponse] -> ShowS
DescribeInstanceHealthResponse -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
showList :: [DescribeInstanceHealthResponse] -> ShowS
$cshowList :: [DescribeInstanceHealthResponse] -> ShowS
show :: DescribeInstanceHealthResponse -> String
$cshow :: DescribeInstanceHealthResponse -> String
showsPrec :: Int -> DescribeInstanceHealthResponse -> ShowS
$cshowsPrec :: Int -> DescribeInstanceHealthResponse -> ShowS
Prelude.Show, forall x.
Rep DescribeInstanceHealthResponse x
-> DescribeInstanceHealthResponse
forall x.
DescribeInstanceHealthResponse
-> Rep DescribeInstanceHealthResponse x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x.
Rep DescribeInstanceHealthResponse x
-> DescribeInstanceHealthResponse
$cfrom :: forall x.
DescribeInstanceHealthResponse
-> Rep DescribeInstanceHealthResponse x
Prelude.Generic)

-- |
-- Create a value of 'DescribeInstanceHealthResponse' with all optional fields omitted.
--
-- Use <https://hackage.haskell.org/package/generic-lens generic-lens> or <https://hackage.haskell.org/package/optics optics> to modify other optional fields.
--
-- The following record fields are available, with the corresponding lenses provided
-- for backwards compatibility:
--
-- 'instanceStates', 'describeInstanceHealthResponse_instanceStates' - Information about the health of the instances.
--
-- 'httpStatus', 'describeInstanceHealthResponse_httpStatus' - The response's http status code.
newDescribeInstanceHealthResponse ::
  -- | 'httpStatus'
  Prelude.Int ->
  DescribeInstanceHealthResponse
newDescribeInstanceHealthResponse :: Int -> DescribeInstanceHealthResponse
newDescribeInstanceHealthResponse Int
pHttpStatus_ =
  DescribeInstanceHealthResponse'
    { $sel:instanceStates:DescribeInstanceHealthResponse' :: Maybe [InstanceState]
instanceStates =
        forall a. Maybe a
Prelude.Nothing,
      $sel:httpStatus:DescribeInstanceHealthResponse' :: Int
httpStatus = Int
pHttpStatus_
    }

-- | Information about the health of the instances.
describeInstanceHealthResponse_instanceStates :: Lens.Lens' DescribeInstanceHealthResponse (Prelude.Maybe [InstanceState])
describeInstanceHealthResponse_instanceStates :: Lens' DescribeInstanceHealthResponse (Maybe [InstanceState])
describeInstanceHealthResponse_instanceStates = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\DescribeInstanceHealthResponse' {Maybe [InstanceState]
instanceStates :: Maybe [InstanceState]
$sel:instanceStates:DescribeInstanceHealthResponse' :: DescribeInstanceHealthResponse -> Maybe [InstanceState]
instanceStates} -> Maybe [InstanceState]
instanceStates) (\s :: DescribeInstanceHealthResponse
s@DescribeInstanceHealthResponse' {} Maybe [InstanceState]
a -> DescribeInstanceHealthResponse
s {$sel:instanceStates:DescribeInstanceHealthResponse' :: Maybe [InstanceState]
instanceStates = Maybe [InstanceState]
a} :: DescribeInstanceHealthResponse) forall b c a. (b -> c) -> (a -> b) -> a -> c
Prelude.. forall (f :: * -> *) (g :: * -> *) s t a b.
(Functor f, Functor g) =>
AnIso s t a b -> Iso (f s) (g t) (f a) (g b)
Lens.mapping forall s t a b. (Coercible s a, Coercible t b) => Iso s t a b
Lens.coerced

-- | The response's http status code.
describeInstanceHealthResponse_httpStatus :: Lens.Lens' DescribeInstanceHealthResponse Prelude.Int
describeInstanceHealthResponse_httpStatus :: Lens' DescribeInstanceHealthResponse Int
describeInstanceHealthResponse_httpStatus = forall s a b t. (s -> a) -> (s -> b -> t) -> Lens s t a b
Lens.lens (\DescribeInstanceHealthResponse' {Int
httpStatus :: Int
$sel:httpStatus:DescribeInstanceHealthResponse' :: DescribeInstanceHealthResponse -> Int
httpStatus} -> Int
httpStatus) (\s :: DescribeInstanceHealthResponse
s@DescribeInstanceHealthResponse' {} Int
a -> DescribeInstanceHealthResponse
s {$sel:httpStatus:DescribeInstanceHealthResponse' :: Int
httpStatus = Int
a} :: DescribeInstanceHealthResponse)

instance
  Prelude.NFData
    DescribeInstanceHealthResponse
  where
  rnf :: DescribeInstanceHealthResponse -> ()
rnf DescribeInstanceHealthResponse' {Int
Maybe [InstanceState]
httpStatus :: Int
instanceStates :: Maybe [InstanceState]
$sel:httpStatus:DescribeInstanceHealthResponse' :: DescribeInstanceHealthResponse -> Int
$sel:instanceStates:DescribeInstanceHealthResponse' :: DescribeInstanceHealthResponse -> Maybe [InstanceState]
..} =
    forall a. NFData a => a -> ()
Prelude.rnf Maybe [InstanceState]
instanceStates
      seq :: forall a b. a -> b -> b
`Prelude.seq` forall a. NFData a => a -> ()
Prelude.rnf Int
httpStatus