aws_erlang

%% WARNING: DO NOT EDIT, AUTO-GENERATED CODE!
%% See https://github.com/aws-beam/aws-codegen for more details.

%% @doc Amazon EMR is a web service that makes it easy to process large
%% amounts of data efficiently. Amazon EMR uses Hadoop processing combined
%% with several AWS products to do tasks such as web indexing, data mining,
%% log file analysis, machine learning, scientific simulation, and data
%% warehousing.
-module(aws_emr).

-export([add_instance_fleet/2,
         add_instance_fleet/3,
         add_instance_groups/2,
         add_instance_groups/3,
         add_job_flow_steps/2,
         add_job_flow_steps/3,
         add_tags/2,
         add_tags/3,
         cancel_steps/2,
         cancel_steps/3,
         create_security_configuration/2,
         create_security_configuration/3,
         delete_security_configuration/2,
         delete_security_configuration/3,
         describe_cluster/2,
         describe_cluster/3,
         describe_job_flows/2,
         describe_job_flows/3,
         describe_security_configuration/2,
         describe_security_configuration/3,
         describe_step/2,
         describe_step/3,
         get_block_public_access_configuration/2,
         get_block_public_access_configuration/3,
         get_managed_scaling_policy/2,
         get_managed_scaling_policy/3,
         list_bootstrap_actions/2,
         list_bootstrap_actions/3,
         list_clusters/2,
         list_clusters/3,
         list_instance_fleets/2,
         list_instance_fleets/3,
         list_instance_groups/2,
         list_instance_groups/3,
         list_instances/2,
         list_instances/3,
         list_security_configurations/2,
         list_security_configurations/3,
         list_steps/2,
         list_steps/3,
         modify_cluster/2,
         modify_cluster/3,
         modify_instance_fleet/2,
         modify_instance_fleet/3,
         modify_instance_groups/2,
         modify_instance_groups/3,
         put_auto_scaling_policy/2,
         put_auto_scaling_policy/3,
         put_block_public_access_configuration/2,
         put_block_public_access_configuration/3,
         put_managed_scaling_policy/2,
         put_managed_scaling_policy/3,
         remove_auto_scaling_policy/2,
         remove_auto_scaling_policy/3,
         remove_managed_scaling_policy/2,
         remove_managed_scaling_policy/3,
         remove_tags/2,
         remove_tags/3,
         run_job_flow/2,
         run_job_flow/3,
         set_termination_protection/2,
         set_termination_protection/3,
         set_visible_to_all_users/2,
         set_visible_to_all_users/3,
         terminate_job_flows/2,
         terminate_job_flows/3]).

-include_lib("hackney/include/hackney_lib.hrl").

%%====================================================================
%% API
%%====================================================================

%% @doc Adds an instance fleet to a running cluster.
%%
%% <note> The instance fleet configuration is available only in Amazon EMR
%% versions 4.8.0 and later, excluding 5.0.x.
%%
%% </note>
add_instance_fleet(Client, Input)
  when is_map(Client), is_map(Input) ->
    add_instance_fleet(Client, Input, []).
add_instance_fleet(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"AddInstanceFleet">>, Input, Options).

%% @doc Adds one or more instance groups to a running cluster.
add_instance_groups(Client, Input)
  when is_map(Client), is_map(Input) ->
    add_instance_groups(Client, Input, []).
add_instance_groups(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"AddInstanceGroups">>, Input, Options).

%% @doc AddJobFlowSteps adds new steps to a running cluster. A maximum of 256
%% steps are allowed in each job flow.
%%
%% If your cluster is long-running (such as a Hive data warehouse) or
%% complex, you may require more than 256 steps to process your data. You can
%% bypass the 256-step limitation in various ways, including using SSH to
%% connect to the master node and submitting queries directly to the software
%% running on the master node, such as Hive and Hadoop. For more information
%% on how to do this, see <a
%% href="https://docs.aws.amazon.com/emr/latest/ManagementGuide/AddMoreThan256Steps.html">Add
%% More than 256 Steps to a Cluster</a> in the <i>Amazon EMR Management
%% Guide</i>.
%%
%% A step specifies the location of a JAR file stored either on the master
%% node of the cluster or in Amazon S3. Each step is performed by the main
%% function of the main class of the JAR file. The main class can be
%% specified either in the manifest of the JAR or by using the MainFunction
%% parameter of the step.
%%
%% Amazon EMR executes each step in the order listed. For a step to be
%% considered complete, the main function must exit with a zero exit code and
%% all Hadoop jobs started while the step was running must have completed and
%% run successfully.
%%
%% You can only add steps to a cluster that is in one of the following
%% states: STARTING, BOOTSTRAPPING, RUNNING, or WAITING.
add_job_flow_steps(Client, Input)
  when is_map(Client), is_map(Input) ->
    add_job_flow_steps(Client, Input, []).
add_job_flow_steps(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"AddJobFlowSteps">>, Input, Options).

%% @doc Adds tags to an Amazon EMR resource. Tags make it easier to associate
%% clusters in various ways, such as grouping clusters to track your Amazon
%% EMR resource allocation costs. For more information, see <a
%% href="https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-plan-tags.html">Tag
%% Clusters</a>.
add_tags(Client, Input)
  when is_map(Client), is_map(Input) ->
    add_tags(Client, Input, []).
add_tags(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"AddTags">>, Input, Options).

%% @doc Cancels a pending step or steps in a running cluster. Available only
%% in Amazon EMR versions 4.8.0 and later, excluding version 5.0.0. A maximum
%% of 256 steps are allowed in each CancelSteps request. CancelSteps is
%% idempotent but asynchronous; it does not guarantee a step will be
%% canceled, even if the request is successfully submitted. You can only
%% cancel steps that are in a <code>PENDING</code> state.
cancel_steps(Client, Input)
  when is_map(Client), is_map(Input) ->
    cancel_steps(Client, Input, []).
cancel_steps(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"CancelSteps">>, Input, Options).

%% @doc Creates a security configuration, which is stored in the service and
%% can be specified when a cluster is created.
create_security_configuration(Client, Input)
  when is_map(Client), is_map(Input) ->
    create_security_configuration(Client, Input, []).
create_security_configuration(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"CreateSecurityConfiguration">>, Input, Options).

%% @doc Deletes a security configuration.
delete_security_configuration(Client, Input)
  when is_map(Client), is_map(Input) ->
    delete_security_configuration(Client, Input, []).
delete_security_configuration(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"DeleteSecurityConfiguration">>, Input, Options).

%% @doc Provides cluster-level details including status, hardware and
%% software configuration, VPC settings, and so on.
describe_cluster(Client, Input)
  when is_map(Client), is_map(Input) ->
    describe_cluster(Client, Input, []).
describe_cluster(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"DescribeCluster">>, Input, Options).

%% @doc This API is deprecated and will eventually be removed. We recommend
%% you use <a>ListClusters</a>, <a>DescribeCluster</a>, <a>ListSteps</a>,
%% <a>ListInstanceGroups</a> and <a>ListBootstrapActions</a> instead.
%%
%% DescribeJobFlows returns a list of job flows that match all of the
%% supplied parameters. The parameters can include a list of job flow IDs,
%% job flow states, and restrictions on job flow creation date and time.
%%
%% Regardless of supplied parameters, only job flows created within the last
%% two months are returned.
%%
%% If no parameters are supplied, then job flows matching either of the
%% following criteria are returned:
%%
%% <ul> <li> Job flows created and completed in the last two weeks
%%
%% </li> <li> Job flows created within the last two months that are in one of
%% the following states: <code>RUNNING</code>, <code>WAITING</code>,
%% <code>SHUTTING_DOWN</code>, <code>STARTING</code>
%%
%% </li> </ul> Amazon EMR can return a maximum of 512 job flow descriptions.
describe_job_flows(Client, Input)
  when is_map(Client), is_map(Input) ->
    describe_job_flows(Client, Input, []).
describe_job_flows(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"DescribeJobFlows">>, Input, Options).

%% @doc Provides the details of a security configuration by returning the
%% configuration JSON.
describe_security_configuration(Client, Input)
  when is_map(Client), is_map(Input) ->
    describe_security_configuration(Client, Input, []).
describe_security_configuration(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"DescribeSecurityConfiguration">>, Input, Options).

%% @doc Provides more detail about the cluster step.
describe_step(Client, Input)
  when is_map(Client), is_map(Input) ->
    describe_step(Client, Input, []).
describe_step(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"DescribeStep">>, Input, Options).

%% @doc Returns the Amazon EMR block public access configuration for your AWS
%% account in the current Region. For more information see <a
%% href="https://docs.aws.amazon.com/emr/latest/ManagementGuide/configure-block-public-access.html">Configure
%% Block Public Access for Amazon EMR</a> in the <i>Amazon EMR Management
%% Guide</i>.
get_block_public_access_configuration(Client, Input)
  when is_map(Client), is_map(Input) ->
    get_block_public_access_configuration(Client, Input, []).
get_block_public_access_configuration(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"GetBlockPublicAccessConfiguration">>, Input, Options).

%% @doc Fetches the attached managed scaling policy for an Amazon EMR
%% cluster.
get_managed_scaling_policy(Client, Input)
  when is_map(Client), is_map(Input) ->
    get_managed_scaling_policy(Client, Input, []).
get_managed_scaling_policy(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"GetManagedScalingPolicy">>, Input, Options).

%% @doc Provides information about the bootstrap actions associated with a
%% cluster.
list_bootstrap_actions(Client, Input)
  when is_map(Client), is_map(Input) ->
    list_bootstrap_actions(Client, Input, []).
list_bootstrap_actions(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ListBootstrapActions">>, Input, Options).

%% @doc Provides the status of all clusters visible to this AWS account.
%% Allows you to filter the list of clusters based on certain criteria; for
%% example, filtering by cluster creation date and time or by status. This
%% call returns a maximum of 50 clusters per call, but returns a marker to
%% track the paging of the cluster list across multiple ListClusters calls.
list_clusters(Client, Input)
  when is_map(Client), is_map(Input) ->
    list_clusters(Client, Input, []).
list_clusters(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ListClusters">>, Input, Options).

%% @doc Lists all available details about the instance fleets in a cluster.
%%
%% <note> The instance fleet configuration is available only in Amazon EMR
%% versions 4.8.0 and later, excluding 5.0.x versions.
%%
%% </note>
list_instance_fleets(Client, Input)
  when is_map(Client), is_map(Input) ->
    list_instance_fleets(Client, Input, []).
list_instance_fleets(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ListInstanceFleets">>, Input, Options).

%% @doc Provides all available details about the instance groups in a
%% cluster.
list_instance_groups(Client, Input)
  when is_map(Client), is_map(Input) ->
    list_instance_groups(Client, Input, []).
list_instance_groups(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ListInstanceGroups">>, Input, Options).

%% @doc Provides information for all active EC2 instances and EC2 instances
%% terminated in the last 30 days, up to a maximum of 2,000. EC2 instances in
%% any of the following states are considered active: AWAITING_FULFILLMENT,
%% PROVISIONING, BOOTSTRAPPING, RUNNING.
list_instances(Client, Input)
  when is_map(Client), is_map(Input) ->
    list_instances(Client, Input, []).
list_instances(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ListInstances">>, Input, Options).

%% @doc Lists all the security configurations visible to this account,
%% providing their creation dates and times, and their names. This call
%% returns a maximum of 50 clusters per call, but returns a marker to track
%% the paging of the cluster list across multiple ListSecurityConfigurations
%% calls.
list_security_configurations(Client, Input)
  when is_map(Client), is_map(Input) ->
    list_security_configurations(Client, Input, []).
list_security_configurations(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ListSecurityConfigurations">>, Input, Options).

%% @doc Provides a list of steps for the cluster in reverse order unless you
%% specify <code>stepIds</code> with the request of filter by
%% <code>StepStates</code>. You can specify a maximum of ten
%% <code>stepIDs</code>.
list_steps(Client, Input)
  when is_map(Client), is_map(Input) ->
    list_steps(Client, Input, []).
list_steps(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ListSteps">>, Input, Options).

%% @doc Modifies the number of steps that can be executed concurrently for
%% the cluster specified using ClusterID.
modify_cluster(Client, Input)
  when is_map(Client), is_map(Input) ->
    modify_cluster(Client, Input, []).
modify_cluster(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ModifyCluster">>, Input, Options).

%% @doc Modifies the target On-Demand and target Spot capacities for the
%% instance fleet with the specified InstanceFleetID within the cluster
%% specified using ClusterID. The call either succeeds or fails atomically.
%%
%% <note> The instance fleet configuration is available only in Amazon EMR
%% versions 4.8.0 and later, excluding 5.0.x versions.
%%
%% </note>
modify_instance_fleet(Client, Input)
  when is_map(Client), is_map(Input) ->
    modify_instance_fleet(Client, Input, []).
modify_instance_fleet(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ModifyInstanceFleet">>, Input, Options).

%% @doc ModifyInstanceGroups modifies the number of nodes and configuration
%% settings of an instance group. The input parameters include the new target
%% instance count for the group and the instance group ID. The call will
%% either succeed or fail atomically.
modify_instance_groups(Client, Input)
  when is_map(Client), is_map(Input) ->
    modify_instance_groups(Client, Input, []).
modify_instance_groups(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"ModifyInstanceGroups">>, Input, Options).

%% @doc Creates or updates an automatic scaling policy for a core instance
%% group or task instance group in an Amazon EMR cluster. The automatic
%% scaling policy defines how an instance group dynamically adds and
%% terminates EC2 instances in response to the value of a CloudWatch metric.
put_auto_scaling_policy(Client, Input)
  when is_map(Client), is_map(Input) ->
    put_auto_scaling_policy(Client, Input, []).
put_auto_scaling_policy(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"PutAutoScalingPolicy">>, Input, Options).

%% @doc Creates or updates an Amazon EMR block public access configuration
%% for your AWS account in the current Region. For more information see <a
%% href="https://docs.aws.amazon.com/emr/latest/ManagementGuide/configure-block-public-access.html">Configure
%% Block Public Access for Amazon EMR</a> in the <i>Amazon EMR Management
%% Guide</i>.
put_block_public_access_configuration(Client, Input)
  when is_map(Client), is_map(Input) ->
    put_block_public_access_configuration(Client, Input, []).
put_block_public_access_configuration(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"PutBlockPublicAccessConfiguration">>, Input, Options).

%% @doc Creates or updates a managed scaling policy for an Amazon EMR
%% cluster. The managed scaling policy defines the limits for resources, such
%% as EC2 instances that can be added or terminated from a cluster. The
%% policy only applies to the core and task nodes. The master node cannot be
%% scaled after initial configuration.
put_managed_scaling_policy(Client, Input)
  when is_map(Client), is_map(Input) ->
    put_managed_scaling_policy(Client, Input, []).
put_managed_scaling_policy(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"PutManagedScalingPolicy">>, Input, Options).

%% @doc Removes an automatic scaling policy from a specified instance group
%% within an EMR cluster.
remove_auto_scaling_policy(Client, Input)
  when is_map(Client), is_map(Input) ->
    remove_auto_scaling_policy(Client, Input, []).
remove_auto_scaling_policy(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"RemoveAutoScalingPolicy">>, Input, Options).

%% @doc Removes a managed scaling policy from a specified EMR cluster.
remove_managed_scaling_policy(Client, Input)
  when is_map(Client), is_map(Input) ->
    remove_managed_scaling_policy(Client, Input, []).
remove_managed_scaling_policy(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"RemoveManagedScalingPolicy">>, Input, Options).

%% @doc Removes tags from an Amazon EMR resource. Tags make it easier to
%% associate clusters in various ways, such as grouping clusters to track
%% your Amazon EMR resource allocation costs. For more information, see <a
%% href="https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-plan-tags.html">Tag
%% Clusters</a>.
%%
%% The following example removes the stack tag with value Prod from a
%% cluster:
remove_tags(Client, Input)
  when is_map(Client), is_map(Input) ->
    remove_tags(Client, Input, []).
remove_tags(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"RemoveTags">>, Input, Options).

%% @doc RunJobFlow creates and starts running a new cluster (job flow). The
%% cluster runs the steps specified. After the steps complete, the cluster
%% stops and the HDFS partition is lost. To prevent loss of data, configure
%% the last step of the job flow to store results in Amazon S3. If the
%% <a>JobFlowInstancesConfig</a> <code>KeepJobFlowAliveWhenNoSteps</code>
%% parameter is set to <code>TRUE</code>, the cluster transitions to the
%% WAITING state rather than shutting down after the steps have completed.
%%
%% For additional protection, you can set the <a>JobFlowInstancesConfig</a>
%% <code>TerminationProtected</code> parameter to <code>TRUE</code> to lock
%% the cluster and prevent it from being terminated by API call, user
%% intervention, or in the event of a job flow error.
%%
%% A maximum of 256 steps are allowed in each job flow.
%%
%% If your cluster is long-running (such as a Hive data warehouse) or
%% complex, you may require more than 256 steps to process your data. You can
%% bypass the 256-step limitation in various ways, including using the SSH
%% shell to connect to the master node and submitting queries directly to the
%% software running on the master node, such as Hive and Hadoop. For more
%% information on how to do this, see <a
%% href="https://docs.aws.amazon.com/emr/latest/ManagementGuide/AddMoreThan256Steps.html">Add
%% More than 256 Steps to a Cluster</a> in the <i>Amazon EMR Management
%% Guide</i>.
%%
%% For long running clusters, we recommend that you periodically store your
%% results.
%%
%% <note> The instance fleets configuration is available only in Amazon EMR
%% versions 4.8.0 and later, excluding 5.0.x versions. The RunJobFlow request
%% can contain InstanceFleets parameters or InstanceGroups parameters, but
%% not both.
%%
%% </note>
run_job_flow(Client, Input)
  when is_map(Client), is_map(Input) ->
    run_job_flow(Client, Input, []).
run_job_flow(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"RunJobFlow">>, Input, Options).

%% @doc SetTerminationProtection locks a cluster (job flow) so the EC2
%% instances in the cluster cannot be terminated by user intervention, an API
%% call, or in the event of a job-flow error. The cluster still terminates
%% upon successful completion of the job flow. Calling
%% <code>SetTerminationProtection</code> on a cluster is similar to calling
%% the Amazon EC2 <code>DisableAPITermination</code> API on all EC2 instances
%% in a cluster.
%%
%% <code>SetTerminationProtection</code> is used to prevent accidental
%% termination of a cluster and to ensure that in the event of an error, the
%% instances persist so that you can recover any data stored in their
%% ephemeral instance storage.
%%
%% To terminate a cluster that has been locked by setting
%% <code>SetTerminationProtection</code> to <code>true</code>, you must first
%% unlock the job flow by a subsequent call to
%% <code>SetTerminationProtection</code> in which you set the value to
%% <code>false</code>.
%%
%% For more information, see<a
%% href="https://docs.aws.amazon.com/emr/latest/ManagementGuide/UsingEMR_TerminationProtection.html">Managing
%% Cluster Termination</a> in the <i>Amazon EMR Management Guide</i>.
set_termination_protection(Client, Input)
  when is_map(Client), is_map(Input) ->
    set_termination_protection(Client, Input, []).
set_termination_protection(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"SetTerminationProtection">>, Input, Options).

%% @doc Sets the <a>Cluster$VisibleToAllUsers</a> value, which determines
%% whether the cluster is visible to all IAM users of the AWS account
%% associated with the cluster. Only the IAM user who created the cluster or
%% the AWS account root user can call this action. The default value,
%% <code>true</code>, indicates that all IAM users in the AWS account can
%% perform cluster actions if they have the proper IAM policy permissions. If
%% set to <code>false</code>, only the IAM user that created the cluster can
%% perform actions. This action works on running clusters. You can override
%% the default <code>true</code> setting when you create a cluster by using
%% the <code>VisibleToAllUsers</code> parameter with <code>RunJobFlow</code>.
set_visible_to_all_users(Client, Input)
  when is_map(Client), is_map(Input) ->
    set_visible_to_all_users(Client, Input, []).
set_visible_to_all_users(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"SetVisibleToAllUsers">>, Input, Options).

%% @doc TerminateJobFlows shuts a list of clusters (job flows) down. When a
%% job flow is shut down, any step not yet completed is canceled and the EC2
%% instances on which the cluster is running are stopped. Any log files not
%% already saved are uploaded to Amazon S3 if a LogUri was specified when the
%% cluster was created.
%%
%% The maximum number of clusters allowed is 10. The call to
%% <code>TerminateJobFlows</code> is asynchronous. Depending on the
%% configuration of the cluster, it may take up to 1-5 minutes for the
%% cluster to completely terminate and release allocated resources, such as
%% Amazon EC2 instances.
terminate_job_flows(Client, Input)
  when is_map(Client), is_map(Input) ->
    terminate_job_flows(Client, Input, []).
terminate_job_flows(Client, Input, Options)
  when is_map(Client), is_map(Input), is_list(Options) ->
    request(Client, <<"TerminateJobFlows">>, Input, Options).

%%====================================================================
%% Internal functions
%%====================================================================

-spec request(aws_client:aws_client(), binary(), map(), list()) ->
    {ok, Result, {integer(), list(), hackney:client()}} |
    {error, Error, {integer(), list(), hackney:client()}} |
    {error, term()} when
    Result :: map() | undefined,
    Error :: {binary(), binary()}.
request(Client, Action, Input, Options) ->
    Client1 = Client#{service => <<"elasticmapreduce">>},
    Host = get_host(<<"elasticmapreduce">>, Client1),
    URL = get_url(Host, Client1),
    Headers = [
        {<<"Host">>, Host},
        {<<"Content-Type">>, <<"application/x-amz-json-1.1">>},
        {<<"X-Amz-Target">>, << <<"ElasticMapReduce.">>/binary, Action/binary>>}
    ],
    Payload = jsx:encode(Input),
    SignedHeaders = aws_request:sign_request(Client1, <<"POST">>, URL, Headers, Payload),
    Response = hackney:request(post, URL, SignedHeaders, Payload, Options),
    handle_response(Response).

handle_response({ok, 200, ResponseHeaders, Client}) ->
    case hackney:body(Client) of
        {ok, <<>>} ->
            {ok, undefined, {200, ResponseHeaders, Client}};
        {ok, Body} ->
            Result = jsx:decode(Body, [return_maps]),
            {ok, Result, {200, ResponseHeaders, Client}}
    end;
handle_response({ok, StatusCode, ResponseHeaders, Client}) ->
    {ok, Body} = hackney:body(Client),
    Error = jsx:decode(Body, [return_maps]),
    Exception = maps:get(<<"__type">>, Error, undefined),
    Reason = maps:get(<<"message">>, Error, undefined),
    {error, {Exception, Reason}, {StatusCode, ResponseHeaders, Client}};
handle_response({error, Reason}) ->
    {error, Reason}.

get_host(_EndpointPrefix, #{region := <<"local">>}) ->
    <<"localhost">>;
get_host(EndpointPrefix, #{region := Region, endpoint := Endpoint}) ->
    aws_util:binary_join([EndpointPrefix, <<".">>, Region, <<".">>, Endpoint], <<"">>).

get_url(Host, Client) ->
    Proto = maps:get(proto, Client),
    Port = maps:get(port, Client),
    aws_util:binary_join([Proto, <<"://">>, Host, <<":">>, Port, <<"/">>], <<"">>).