// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.

/// <p>The input for an <code>UpdateStack</code> action.</p>
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::fmt::Debug)]
pub struct UpdateStackInput {
    /// <p>The name or unique stack ID of the stack to update.</p>
    pub stack_name: ::std::option::Option<::std::string::String>,
    /// <p>Structure containing the template body with a minimum length of 1 byte and a maximum length of 51,200 bytes. (For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>.)</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub template_body: ::std::option::Option<::std::string::String>,
    /// <p>Location of file containing the template body. The URL must point to a template that's located in an Amazon S3 bucket or a Systems Manager document. For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>. The location for an Amazon S3 bucket must start with <code>https://</code>.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub template_url: ::std::option::Option<::std::string::String>,
    /// <p>Reuse the existing template that is associated with the stack that you are updating.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub use_previous_template: ::std::option::Option<bool>,
    /// <p>Structure containing the temporary overriding stack policy body. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub stack_policy_during_update_body: ::std::option::Option<::std::string::String>,
    /// <p>Location of a file containing the temporary overriding stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub stack_policy_during_update_url: ::std::option::Option<::std::string::String>,
    /// <p>A list of <code>Parameter</code> structures that specify input parameters for the stack. For more information, see the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_Parameter.html">Parameter</a> data type.</p>
    pub parameters: ::std::option::Option<::std::vec::Vec<crate::types::Parameter>>,
    /// <p>In some cases, you must explicitly acknowledge that your stack template contains certain capabilities in order for CloudFormation to update the stack.</p>
    /// <ul>
    /// <li>
    /// <p><code>CAPABILITY_IAM</code> and <code>CAPABILITY_NAMED_IAM</code></p>
    /// <p>Some stack templates might include resources that can affect permissions in your Amazon Web Services account; for example, by creating new Identity and Access Management (IAM) users. For those stacks, you must explicitly acknowledge this by specifying one of these capabilities.</p>
    /// <p>The following IAM resources require you to specify either the <code>CAPABILITY_IAM</code> or <code>CAPABILITY_NAMED_IAM</code> capability.</p>
    /// <ul>
    /// <li>
    /// <p>If you have IAM resources, you can specify either capability.</p></li>
    /// <li>
    /// <p>If you have IAM resources with custom names, you <i>must</i> specify <code>CAPABILITY_NAMED_IAM</code>.</p></li>
    /// <li>
    /// <p>If you don't specify either of these capabilities, CloudFormation returns an <code>InsufficientCapabilities</code> error.</p></li>
    /// </ul>
    /// <p>If your stack template contains these resources, we suggest that you review all permissions associated with them and edit their permissions if necessary.</p>
    /// <ul>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-accesskey.html"> AWS::IAM::AccessKey</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-group.html"> AWS::IAM::Group</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-instanceprofile.html">AWS::IAM::InstanceProfile</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-policy.html">AWS::IAM::Policy</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-role.html"> AWS::IAM::Role</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-user.html"> AWS::IAM::User</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-addusertogroup.html">AWS::IAM::UserToGroupAddition</a></p></li>
    /// </ul>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html#capabilities">Acknowledging IAM Resources in CloudFormation Templates</a>.</p></li>
    /// <li>
    /// <p><code>CAPABILITY_AUTO_EXPAND</code></p>
    /// <p>Some template contain macros. Macros perform custom processing on templates; this can include simple actions like find-and-replace operations, all the way to extensive transformations of entire templates. Because of this, users typically create a change set from the processed template, so that they can review the changes resulting from the macros before actually updating the stack. If your stack template contains one or more macros, and you choose to update a stack directly from the processed template, without first reviewing the resulting changes in a change set, you must acknowledge this capability. This includes the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/create-reusable-transform-function-snippets-and-add-to-your-template-with-aws-include-transform.html">AWS::Include</a> and <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/transform-aws-serverless.html">AWS::Serverless</a> transforms, which are macros hosted by CloudFormation.</p>
    /// <p>If you want to update a stack from a stack template that contains macros <i>and</i> nested stacks, you must update the stack directly from the template using this capability.</p><important>
    /// <p>You should only update stacks directly from a stack template that contains macros if you know what processing the macro performs.</p>
    /// <p>Each macro relies on an underlying Lambda service function for processing stack templates. Be aware that the Lambda function owner can update the function operation without CloudFormation being notified.</p>
    /// </important>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-macros.html">Using CloudFormation Macros to Perform Custom Processing on Templates</a>.</p></li>
    /// </ul><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub capabilities: ::std::option::Option<::std::vec::Vec<crate::types::Capability>>,
    /// <p>The template resource types that you have permissions to work with for this update stack action, such as <code>AWS::EC2::Instance</code>, <code>AWS::EC2::*</code>, or <code>Custom::MyCustomInstance</code>.</p>
    /// <p>If the list of resource types doesn't include a resource that you're updating, the stack update fails. By default, CloudFormation grants permissions to all resource types. Identity and Access Management (IAM) uses this parameter for CloudFormation-specific condition keys in IAM policies. For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html">Controlling Access with Identity and Access Management</a>.</p><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub resource_types: ::std::option::Option<::std::vec::Vec<::std::string::String>>,
    /// <p>The Amazon Resource Name (ARN) of an Identity and Access Management (IAM) role that CloudFormation assumes to update the stack. CloudFormation uses the role's credentials to make calls on your behalf. CloudFormation always uses this role for all future operations on the stack. Provided that users have permission to operate on the stack, CloudFormation uses this role even if the users don't have permission to pass it. Ensure that the role grants least privilege.</p>
    /// <p>If you don't specify a value, CloudFormation uses the role that was previously associated with the stack. If no role is available, CloudFormation uses a temporary session that is generated from your user credentials.</p>
    pub role_arn: ::std::option::Option<::std::string::String>,
    /// <p>The rollback triggers for CloudFormation to monitor during stack creation and updating operations, and for the specified monitoring period afterwards.</p>
    pub rollback_configuration: ::std::option::Option<crate::types::RollbackConfiguration>,
    /// <p>Structure containing a new stack policy body. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub stack_policy_body: ::std::option::Option<::std::string::String>,
    /// <p>Location of a file containing the updated stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub stack_policy_url: ::std::option::Option<::std::string::String>,
    /// <p>Amazon Simple Notification Service topic Amazon Resource Names (ARNs) that CloudFormation associates with the stack. Specify an empty list to remove all notification topics.</p>
    pub notification_arns: ::std::option::Option<::std::vec::Vec<::std::string::String>>,
    /// <p>Key-value pairs to associate with this stack. CloudFormation also propagates these tags to supported resources in the stack. You can specify a maximum number of 50 tags.</p>
    /// <p>If you don't specify this parameter, CloudFormation doesn't modify the stack's tags. If you specify an empty value, CloudFormation removes all associated tags.</p>
    pub tags: ::std::option::Option<::std::vec::Vec<crate::types::Tag>>,
    /// <p>Preserve the state of previously provisioned resources when an operation fails.</p>
    /// <p>Default: <code>False</code></p>
    pub disable_rollback: ::std::option::Option<bool>,
    /// <p>A unique identifier for this <code>UpdateStack</code> request. Specify this token if you plan to retry requests so that CloudFormation knows that you're not attempting to update a stack with the same name. You might retry <code>UpdateStack</code> requests to ensure that CloudFormation successfully received them.</p>
    /// <p>All events triggered by a given stack operation are assigned the same client request token, which you can use to track operations. For example, if you execute a <code>CreateStack</code> operation with the token <code>token1</code>, then all the <code>StackEvents</code> generated by that operation will have <code>ClientRequestToken</code> set as <code>token1</code>.</p>
    /// <p>In the console, stack operations display the client request token on the Events tab. Stack operations that are initiated from the console use the token format <i>Console-StackOperation-ID</i>, which helps you easily identify the stack operation . For example, if you create a stack using the console, each stack event would be assigned the same token in the following format: <code>Console-CreateStack-7f59c3cf-00d2-40c7-b2ff-e75db0987002</code>.</p>
    pub client_request_token: ::std::option::Option<::std::string::String>,
    /// <p>When set to <code>true</code>, newly created resources are deleted when the operation rolls back. This includes newly created resources marked with a deletion policy of <code>Retain</code>.</p>
    /// <p>Default: <code>false</code></p>
    pub retain_except_on_create: ::std::option::Option<bool>,
}
impl UpdateStackInput {
    /// <p>The name or unique stack ID of the stack to update.</p>
    pub fn stack_name(&self) -> ::std::option::Option<&str> {
        self.stack_name.as_deref()
    }
    /// <p>Structure containing the template body with a minimum length of 1 byte and a maximum length of 51,200 bytes. (For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>.)</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn template_body(&self) -> ::std::option::Option<&str> {
        self.template_body.as_deref()
    }
    /// <p>Location of file containing the template body. The URL must point to a template that's located in an Amazon S3 bucket or a Systems Manager document. For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>. The location for an Amazon S3 bucket must start with <code>https://</code>.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn template_url(&self) -> ::std::option::Option<&str> {
        self.template_url.as_deref()
    }
    /// <p>Reuse the existing template that is associated with the stack that you are updating.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn use_previous_template(&self) -> ::std::option::Option<bool> {
        self.use_previous_template
    }
    /// <p>Structure containing the temporary overriding stack policy body. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn stack_policy_during_update_body(&self) -> ::std::option::Option<&str> {
        self.stack_policy_during_update_body.as_deref()
    }
    /// <p>Location of a file containing the temporary overriding stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn stack_policy_during_update_url(&self) -> ::std::option::Option<&str> {
        self.stack_policy_during_update_url.as_deref()
    }
    /// <p>A list of <code>Parameter</code> structures that specify input parameters for the stack. For more information, see the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_Parameter.html">Parameter</a> data type.</p>
    ///
    /// If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use `.parameters.is_none()`.
    pub fn parameters(&self) -> &[crate::types::Parameter] {
        self.parameters.as_deref().unwrap_or_default()
    }
    /// <p>In some cases, you must explicitly acknowledge that your stack template contains certain capabilities in order for CloudFormation to update the stack.</p>
    /// <ul>
    /// <li>
    /// <p><code>CAPABILITY_IAM</code> and <code>CAPABILITY_NAMED_IAM</code></p>
    /// <p>Some stack templates might include resources that can affect permissions in your Amazon Web Services account; for example, by creating new Identity and Access Management (IAM) users. For those stacks, you must explicitly acknowledge this by specifying one of these capabilities.</p>
    /// <p>The following IAM resources require you to specify either the <code>CAPABILITY_IAM</code> or <code>CAPABILITY_NAMED_IAM</code> capability.</p>
    /// <ul>
    /// <li>
    /// <p>If you have IAM resources, you can specify either capability.</p></li>
    /// <li>
    /// <p>If you have IAM resources with custom names, you <i>must</i> specify <code>CAPABILITY_NAMED_IAM</code>.</p></li>
    /// <li>
    /// <p>If you don't specify either of these capabilities, CloudFormation returns an <code>InsufficientCapabilities</code> error.</p></li>
    /// </ul>
    /// <p>If your stack template contains these resources, we suggest that you review all permissions associated with them and edit their permissions if necessary.</p>
    /// <ul>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-accesskey.html"> AWS::IAM::AccessKey</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-group.html"> AWS::IAM::Group</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-instanceprofile.html">AWS::IAM::InstanceProfile</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-policy.html">AWS::IAM::Policy</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-role.html"> AWS::IAM::Role</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-user.html"> AWS::IAM::User</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-addusertogroup.html">AWS::IAM::UserToGroupAddition</a></p></li>
    /// </ul>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html#capabilities">Acknowledging IAM Resources in CloudFormation Templates</a>.</p></li>
    /// <li>
    /// <p><code>CAPABILITY_AUTO_EXPAND</code></p>
    /// <p>Some template contain macros. Macros perform custom processing on templates; this can include simple actions like find-and-replace operations, all the way to extensive transformations of entire templates. Because of this, users typically create a change set from the processed template, so that they can review the changes resulting from the macros before actually updating the stack. If your stack template contains one or more macros, and you choose to update a stack directly from the processed template, without first reviewing the resulting changes in a change set, you must acknowledge this capability. This includes the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/create-reusable-transform-function-snippets-and-add-to-your-template-with-aws-include-transform.html">AWS::Include</a> and <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/transform-aws-serverless.html">AWS::Serverless</a> transforms, which are macros hosted by CloudFormation.</p>
    /// <p>If you want to update a stack from a stack template that contains macros <i>and</i> nested stacks, you must update the stack directly from the template using this capability.</p><important>
    /// <p>You should only update stacks directly from a stack template that contains macros if you know what processing the macro performs.</p>
    /// <p>Each macro relies on an underlying Lambda service function for processing stack templates. Be aware that the Lambda function owner can update the function operation without CloudFormation being notified.</p>
    /// </important>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-macros.html">Using CloudFormation Macros to Perform Custom Processing on Templates</a>.</p></li>
    /// </ul><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    ///
    /// If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use `.capabilities.is_none()`.
    pub fn capabilities(&self) -> &[crate::types::Capability] {
        self.capabilities.as_deref().unwrap_or_default()
    }
    /// <p>The template resource types that you have permissions to work with for this update stack action, such as <code>AWS::EC2::Instance</code>, <code>AWS::EC2::*</code>, or <code>Custom::MyCustomInstance</code>.</p>
    /// <p>If the list of resource types doesn't include a resource that you're updating, the stack update fails. By default, CloudFormation grants permissions to all resource types. Identity and Access Management (IAM) uses this parameter for CloudFormation-specific condition keys in IAM policies. For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html">Controlling Access with Identity and Access Management</a>.</p><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    ///
    /// If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use `.resource_types.is_none()`.
    pub fn resource_types(&self) -> &[::std::string::String] {
        self.resource_types.as_deref().unwrap_or_default()
    }
    /// <p>The Amazon Resource Name (ARN) of an Identity and Access Management (IAM) role that CloudFormation assumes to update the stack. CloudFormation uses the role's credentials to make calls on your behalf. CloudFormation always uses this role for all future operations on the stack. Provided that users have permission to operate on the stack, CloudFormation uses this role even if the users don't have permission to pass it. Ensure that the role grants least privilege.</p>
    /// <p>If you don't specify a value, CloudFormation uses the role that was previously associated with the stack. If no role is available, CloudFormation uses a temporary session that is generated from your user credentials.</p>
    pub fn role_arn(&self) -> ::std::option::Option<&str> {
        self.role_arn.as_deref()
    }
    /// <p>The rollback triggers for CloudFormation to monitor during stack creation and updating operations, and for the specified monitoring period afterwards.</p>
    pub fn rollback_configuration(&self) -> ::std::option::Option<&crate::types::RollbackConfiguration> {
        self.rollback_configuration.as_ref()
    }
    /// <p>Structure containing a new stack policy body. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn stack_policy_body(&self) -> ::std::option::Option<&str> {
        self.stack_policy_body.as_deref()
    }
    /// <p>Location of a file containing the updated stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn stack_policy_url(&self) -> ::std::option::Option<&str> {
        self.stack_policy_url.as_deref()
    }
    /// <p>Amazon Simple Notification Service topic Amazon Resource Names (ARNs) that CloudFormation associates with the stack. Specify an empty list to remove all notification topics.</p>
    ///
    /// If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use `.notification_arns.is_none()`.
    pub fn notification_arns(&self) -> &[::std::string::String] {
        self.notification_arns.as_deref().unwrap_or_default()
    }
    /// <p>Key-value pairs to associate with this stack. CloudFormation also propagates these tags to supported resources in the stack. You can specify a maximum number of 50 tags.</p>
    /// <p>If you don't specify this parameter, CloudFormation doesn't modify the stack's tags. If you specify an empty value, CloudFormation removes all associated tags.</p>
    ///
    /// If no value was sent for this field, a default will be set. If you want to determine if no value was sent, use `.tags.is_none()`.
    pub fn tags(&self) -> &[crate::types::Tag] {
        self.tags.as_deref().unwrap_or_default()
    }
    /// <p>Preserve the state of previously provisioned resources when an operation fails.</p>
    /// <p>Default: <code>False</code></p>
    pub fn disable_rollback(&self) -> ::std::option::Option<bool> {
        self.disable_rollback
    }
    /// <p>A unique identifier for this <code>UpdateStack</code> request. Specify this token if you plan to retry requests so that CloudFormation knows that you're not attempting to update a stack with the same name. You might retry <code>UpdateStack</code> requests to ensure that CloudFormation successfully received them.</p>
    /// <p>All events triggered by a given stack operation are assigned the same client request token, which you can use to track operations. For example, if you execute a <code>CreateStack</code> operation with the token <code>token1</code>, then all the <code>StackEvents</code> generated by that operation will have <code>ClientRequestToken</code> set as <code>token1</code>.</p>
    /// <p>In the console, stack operations display the client request token on the Events tab. Stack operations that are initiated from the console use the token format <i>Console-StackOperation-ID</i>, which helps you easily identify the stack operation . For example, if you create a stack using the console, each stack event would be assigned the same token in the following format: <code>Console-CreateStack-7f59c3cf-00d2-40c7-b2ff-e75db0987002</code>.</p>
    pub fn client_request_token(&self) -> ::std::option::Option<&str> {
        self.client_request_token.as_deref()
    }
    /// <p>When set to <code>true</code>, newly created resources are deleted when the operation rolls back. This includes newly created resources marked with a deletion policy of <code>Retain</code>.</p>
    /// <p>Default: <code>false</code></p>
    pub fn retain_except_on_create(&self) -> ::std::option::Option<bool> {
        self.retain_except_on_create
    }
}
impl UpdateStackInput {
    /// Creates a new builder-style object to manufacture [`UpdateStackInput`](crate::operation::update_stack::UpdateStackInput).
    pub fn builder() -> crate::operation::update_stack::builders::UpdateStackInputBuilder {
        crate::operation::update_stack::builders::UpdateStackInputBuilder::default()
    }
}

/// A builder for [`UpdateStackInput`](crate::operation::update_stack::UpdateStackInput).
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::PartialEq, ::std::default::Default, ::std::fmt::Debug)]
pub struct UpdateStackInputBuilder {
    pub(crate) stack_name: ::std::option::Option<::std::string::String>,
    pub(crate) template_body: ::std::option::Option<::std::string::String>,
    pub(crate) template_url: ::std::option::Option<::std::string::String>,
    pub(crate) use_previous_template: ::std::option::Option<bool>,
    pub(crate) stack_policy_during_update_body: ::std::option::Option<::std::string::String>,
    pub(crate) stack_policy_during_update_url: ::std::option::Option<::std::string::String>,
    pub(crate) parameters: ::std::option::Option<::std::vec::Vec<crate::types::Parameter>>,
    pub(crate) capabilities: ::std::option::Option<::std::vec::Vec<crate::types::Capability>>,
    pub(crate) resource_types: ::std::option::Option<::std::vec::Vec<::std::string::String>>,
    pub(crate) role_arn: ::std::option::Option<::std::string::String>,
    pub(crate) rollback_configuration: ::std::option::Option<crate::types::RollbackConfiguration>,
    pub(crate) stack_policy_body: ::std::option::Option<::std::string::String>,
    pub(crate) stack_policy_url: ::std::option::Option<::std::string::String>,
    pub(crate) notification_arns: ::std::option::Option<::std::vec::Vec<::std::string::String>>,
    pub(crate) tags: ::std::option::Option<::std::vec::Vec<crate::types::Tag>>,
    pub(crate) disable_rollback: ::std::option::Option<bool>,
    pub(crate) client_request_token: ::std::option::Option<::std::string::String>,
    pub(crate) retain_except_on_create: ::std::option::Option<bool>,
}
impl UpdateStackInputBuilder {
    /// <p>The name or unique stack ID of the stack to update.</p>
    /// This field is required.
    pub fn stack_name(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.stack_name = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>The name or unique stack ID of the stack to update.</p>
    pub fn set_stack_name(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.stack_name = input;
        self
    }
    /// <p>The name or unique stack ID of the stack to update.</p>
    pub fn get_stack_name(&self) -> &::std::option::Option<::std::string::String> {
        &self.stack_name
    }
    /// <p>Structure containing the template body with a minimum length of 1 byte and a maximum length of 51,200 bytes. (For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>.)</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn template_body(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.template_body = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>Structure containing the template body with a minimum length of 1 byte and a maximum length of 51,200 bytes. (For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>.)</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn set_template_body(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.template_body = input;
        self
    }
    /// <p>Structure containing the template body with a minimum length of 1 byte and a maximum length of 51,200 bytes. (For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>.)</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn get_template_body(&self) -> &::std::option::Option<::std::string::String> {
        &self.template_body
    }
    /// <p>Location of file containing the template body. The URL must point to a template that's located in an Amazon S3 bucket or a Systems Manager document. For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>. The location for an Amazon S3 bucket must start with <code>https://</code>.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn template_url(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.template_url = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>Location of file containing the template body. The URL must point to a template that's located in an Amazon S3 bucket or a Systems Manager document. For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>. The location for an Amazon S3 bucket must start with <code>https://</code>.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn set_template_url(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.template_url = input;
        self
    }
    /// <p>Location of file containing the template body. The URL must point to a template that's located in an Amazon S3 bucket or a Systems Manager document. For more information, go to <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-anatomy.html">Template Anatomy</a> in the <i>CloudFormation User Guide</i>. The location for an Amazon S3 bucket must start with <code>https://</code>.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn get_template_url(&self) -> &::std::option::Option<::std::string::String> {
        &self.template_url
    }
    /// <p>Reuse the existing template that is associated with the stack that you are updating.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn use_previous_template(mut self, input: bool) -> Self {
        self.use_previous_template = ::std::option::Option::Some(input);
        self
    }
    /// <p>Reuse the existing template that is associated with the stack that you are updating.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn set_use_previous_template(mut self, input: ::std::option::Option<bool>) -> Self {
        self.use_previous_template = input;
        self
    }
    /// <p>Reuse the existing template that is associated with the stack that you are updating.</p>
    /// <p>Conditional: You must specify only one of the following parameters: <code>TemplateBody</code>, <code>TemplateURL</code>, or set the <code>UsePreviousTemplate</code> to <code>true</code>.</p>
    pub fn get_use_previous_template(&self) -> &::std::option::Option<bool> {
        &self.use_previous_template
    }
    /// <p>Structure containing the temporary overriding stack policy body. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn stack_policy_during_update_body(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.stack_policy_during_update_body = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>Structure containing the temporary overriding stack policy body. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn set_stack_policy_during_update_body(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.stack_policy_during_update_body = input;
        self
    }
    /// <p>Structure containing the temporary overriding stack policy body. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn get_stack_policy_during_update_body(&self) -> &::std::option::Option<::std::string::String> {
        &self.stack_policy_during_update_body
    }
    /// <p>Location of a file containing the temporary overriding stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn stack_policy_during_update_url(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.stack_policy_during_update_url = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>Location of a file containing the temporary overriding stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn set_stack_policy_during_update_url(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.stack_policy_during_update_url = input;
        self
    }
    /// <p>Location of a file containing the temporary overriding stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyDuringUpdateBody</code> or the <code>StackPolicyDuringUpdateURL</code> parameter, but not both.</p>
    /// <p>If you want to update protected resources, specify a temporary overriding stack policy during this update. If you don't specify a stack policy, the current policy that is associated with the stack will be used.</p>
    pub fn get_stack_policy_during_update_url(&self) -> &::std::option::Option<::std::string::String> {
        &self.stack_policy_during_update_url
    }
    /// Appends an item to `parameters`.
    ///
    /// To override the contents of this collection use [`set_parameters`](Self::set_parameters).
    ///
    /// <p>A list of <code>Parameter</code> structures that specify input parameters for the stack. For more information, see the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_Parameter.html">Parameter</a> data type.</p>
    pub fn parameters(mut self, input: crate::types::Parameter) -> Self {
        let mut v = self.parameters.unwrap_or_default();
        v.push(input);
        self.parameters = ::std::option::Option::Some(v);
        self
    }
    /// <p>A list of <code>Parameter</code> structures that specify input parameters for the stack. For more information, see the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_Parameter.html">Parameter</a> data type.</p>
    pub fn set_parameters(mut self, input: ::std::option::Option<::std::vec::Vec<crate::types::Parameter>>) -> Self {
        self.parameters = input;
        self
    }
    /// <p>A list of <code>Parameter</code> structures that specify input parameters for the stack. For more information, see the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/APIReference/API_Parameter.html">Parameter</a> data type.</p>
    pub fn get_parameters(&self) -> &::std::option::Option<::std::vec::Vec<crate::types::Parameter>> {
        &self.parameters
    }
    /// Appends an item to `capabilities`.
    ///
    /// To override the contents of this collection use [`set_capabilities`](Self::set_capabilities).
    ///
    /// <p>In some cases, you must explicitly acknowledge that your stack template contains certain capabilities in order for CloudFormation to update the stack.</p>
    /// <ul>
    /// <li>
    /// <p><code>CAPABILITY_IAM</code> and <code>CAPABILITY_NAMED_IAM</code></p>
    /// <p>Some stack templates might include resources that can affect permissions in your Amazon Web Services account; for example, by creating new Identity and Access Management (IAM) users. For those stacks, you must explicitly acknowledge this by specifying one of these capabilities.</p>
    /// <p>The following IAM resources require you to specify either the <code>CAPABILITY_IAM</code> or <code>CAPABILITY_NAMED_IAM</code> capability.</p>
    /// <ul>
    /// <li>
    /// <p>If you have IAM resources, you can specify either capability.</p></li>
    /// <li>
    /// <p>If you have IAM resources with custom names, you <i>must</i> specify <code>CAPABILITY_NAMED_IAM</code>.</p></li>
    /// <li>
    /// <p>If you don't specify either of these capabilities, CloudFormation returns an <code>InsufficientCapabilities</code> error.</p></li>
    /// </ul>
    /// <p>If your stack template contains these resources, we suggest that you review all permissions associated with them and edit their permissions if necessary.</p>
    /// <ul>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-accesskey.html"> AWS::IAM::AccessKey</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-group.html"> AWS::IAM::Group</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-instanceprofile.html">AWS::IAM::InstanceProfile</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-policy.html">AWS::IAM::Policy</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-role.html"> AWS::IAM::Role</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-user.html"> AWS::IAM::User</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-addusertogroup.html">AWS::IAM::UserToGroupAddition</a></p></li>
    /// </ul>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html#capabilities">Acknowledging IAM Resources in CloudFormation Templates</a>.</p></li>
    /// <li>
    /// <p><code>CAPABILITY_AUTO_EXPAND</code></p>
    /// <p>Some template contain macros. Macros perform custom processing on templates; this can include simple actions like find-and-replace operations, all the way to extensive transformations of entire templates. Because of this, users typically create a change set from the processed template, so that they can review the changes resulting from the macros before actually updating the stack. If your stack template contains one or more macros, and you choose to update a stack directly from the processed template, without first reviewing the resulting changes in a change set, you must acknowledge this capability. This includes the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/create-reusable-transform-function-snippets-and-add-to-your-template-with-aws-include-transform.html">AWS::Include</a> and <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/transform-aws-serverless.html">AWS::Serverless</a> transforms, which are macros hosted by CloudFormation.</p>
    /// <p>If you want to update a stack from a stack template that contains macros <i>and</i> nested stacks, you must update the stack directly from the template using this capability.</p><important>
    /// <p>You should only update stacks directly from a stack template that contains macros if you know what processing the macro performs.</p>
    /// <p>Each macro relies on an underlying Lambda service function for processing stack templates. Be aware that the Lambda function owner can update the function operation without CloudFormation being notified.</p>
    /// </important>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-macros.html">Using CloudFormation Macros to Perform Custom Processing on Templates</a>.</p></li>
    /// </ul><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub fn capabilities(mut self, input: crate::types::Capability) -> Self {
        let mut v = self.capabilities.unwrap_or_default();
        v.push(input);
        self.capabilities = ::std::option::Option::Some(v);
        self
    }
    /// <p>In some cases, you must explicitly acknowledge that your stack template contains certain capabilities in order for CloudFormation to update the stack.</p>
    /// <ul>
    /// <li>
    /// <p><code>CAPABILITY_IAM</code> and <code>CAPABILITY_NAMED_IAM</code></p>
    /// <p>Some stack templates might include resources that can affect permissions in your Amazon Web Services account; for example, by creating new Identity and Access Management (IAM) users. For those stacks, you must explicitly acknowledge this by specifying one of these capabilities.</p>
    /// <p>The following IAM resources require you to specify either the <code>CAPABILITY_IAM</code> or <code>CAPABILITY_NAMED_IAM</code> capability.</p>
    /// <ul>
    /// <li>
    /// <p>If you have IAM resources, you can specify either capability.</p></li>
    /// <li>
    /// <p>If you have IAM resources with custom names, you <i>must</i> specify <code>CAPABILITY_NAMED_IAM</code>.</p></li>
    /// <li>
    /// <p>If you don't specify either of these capabilities, CloudFormation returns an <code>InsufficientCapabilities</code> error.</p></li>
    /// </ul>
    /// <p>If your stack template contains these resources, we suggest that you review all permissions associated with them and edit their permissions if necessary.</p>
    /// <ul>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-accesskey.html"> AWS::IAM::AccessKey</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-group.html"> AWS::IAM::Group</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-instanceprofile.html">AWS::IAM::InstanceProfile</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-policy.html">AWS::IAM::Policy</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-role.html"> AWS::IAM::Role</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-user.html"> AWS::IAM::User</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-addusertogroup.html">AWS::IAM::UserToGroupAddition</a></p></li>
    /// </ul>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html#capabilities">Acknowledging IAM Resources in CloudFormation Templates</a>.</p></li>
    /// <li>
    /// <p><code>CAPABILITY_AUTO_EXPAND</code></p>
    /// <p>Some template contain macros. Macros perform custom processing on templates; this can include simple actions like find-and-replace operations, all the way to extensive transformations of entire templates. Because of this, users typically create a change set from the processed template, so that they can review the changes resulting from the macros before actually updating the stack. If your stack template contains one or more macros, and you choose to update a stack directly from the processed template, without first reviewing the resulting changes in a change set, you must acknowledge this capability. This includes the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/create-reusable-transform-function-snippets-and-add-to-your-template-with-aws-include-transform.html">AWS::Include</a> and <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/transform-aws-serverless.html">AWS::Serverless</a> transforms, which are macros hosted by CloudFormation.</p>
    /// <p>If you want to update a stack from a stack template that contains macros <i>and</i> nested stacks, you must update the stack directly from the template using this capability.</p><important>
    /// <p>You should only update stacks directly from a stack template that contains macros if you know what processing the macro performs.</p>
    /// <p>Each macro relies on an underlying Lambda service function for processing stack templates. Be aware that the Lambda function owner can update the function operation without CloudFormation being notified.</p>
    /// </important>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-macros.html">Using CloudFormation Macros to Perform Custom Processing on Templates</a>.</p></li>
    /// </ul><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub fn set_capabilities(mut self, input: ::std::option::Option<::std::vec::Vec<crate::types::Capability>>) -> Self {
        self.capabilities = input;
        self
    }
    /// <p>In some cases, you must explicitly acknowledge that your stack template contains certain capabilities in order for CloudFormation to update the stack.</p>
    /// <ul>
    /// <li>
    /// <p><code>CAPABILITY_IAM</code> and <code>CAPABILITY_NAMED_IAM</code></p>
    /// <p>Some stack templates might include resources that can affect permissions in your Amazon Web Services account; for example, by creating new Identity and Access Management (IAM) users. For those stacks, you must explicitly acknowledge this by specifying one of these capabilities.</p>
    /// <p>The following IAM resources require you to specify either the <code>CAPABILITY_IAM</code> or <code>CAPABILITY_NAMED_IAM</code> capability.</p>
    /// <ul>
    /// <li>
    /// <p>If you have IAM resources, you can specify either capability.</p></li>
    /// <li>
    /// <p>If you have IAM resources with custom names, you <i>must</i> specify <code>CAPABILITY_NAMED_IAM</code>.</p></li>
    /// <li>
    /// <p>If you don't specify either of these capabilities, CloudFormation returns an <code>InsufficientCapabilities</code> error.</p></li>
    /// </ul>
    /// <p>If your stack template contains these resources, we suggest that you review all permissions associated with them and edit their permissions if necessary.</p>
    /// <ul>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-accesskey.html"> AWS::IAM::AccessKey</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-group.html"> AWS::IAM::Group</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-instanceprofile.html">AWS::IAM::InstanceProfile</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-policy.html">AWS::IAM::Policy</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-role.html"> AWS::IAM::Role</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-user.html"> AWS::IAM::User</a></p></li>
    /// <li>
    /// <p><a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-iam-addusertogroup.html">AWS::IAM::UserToGroupAddition</a></p></li>
    /// </ul>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html#capabilities">Acknowledging IAM Resources in CloudFormation Templates</a>.</p></li>
    /// <li>
    /// <p><code>CAPABILITY_AUTO_EXPAND</code></p>
    /// <p>Some template contain macros. Macros perform custom processing on templates; this can include simple actions like find-and-replace operations, all the way to extensive transformations of entire templates. Because of this, users typically create a change set from the processed template, so that they can review the changes resulting from the macros before actually updating the stack. If your stack template contains one or more macros, and you choose to update a stack directly from the processed template, without first reviewing the resulting changes in a change set, you must acknowledge this capability. This includes the <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/create-reusable-transform-function-snippets-and-add-to-your-template-with-aws-include-transform.html">AWS::Include</a> and <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/transform-aws-serverless.html">AWS::Serverless</a> transforms, which are macros hosted by CloudFormation.</p>
    /// <p>If you want to update a stack from a stack template that contains macros <i>and</i> nested stacks, you must update the stack directly from the template using this capability.</p><important>
    /// <p>You should only update stacks directly from a stack template that contains macros if you know what processing the macro performs.</p>
    /// <p>Each macro relies on an underlying Lambda service function for processing stack templates. Be aware that the Lambda function owner can update the function operation without CloudFormation being notified.</p>
    /// </important>
    /// <p>For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/template-macros.html">Using CloudFormation Macros to Perform Custom Processing on Templates</a>.</p></li>
    /// </ul><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub fn get_capabilities(&self) -> &::std::option::Option<::std::vec::Vec<crate::types::Capability>> {
        &self.capabilities
    }
    /// Appends an item to `resource_types`.
    ///
    /// To override the contents of this collection use [`set_resource_types`](Self::set_resource_types).
    ///
    /// <p>The template resource types that you have permissions to work with for this update stack action, such as <code>AWS::EC2::Instance</code>, <code>AWS::EC2::*</code>, or <code>Custom::MyCustomInstance</code>.</p>
    /// <p>If the list of resource types doesn't include a resource that you're updating, the stack update fails. By default, CloudFormation grants permissions to all resource types. Identity and Access Management (IAM) uses this parameter for CloudFormation-specific condition keys in IAM policies. For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html">Controlling Access with Identity and Access Management</a>.</p><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub fn resource_types(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        let mut v = self.resource_types.unwrap_or_default();
        v.push(input.into());
        self.resource_types = ::std::option::Option::Some(v);
        self
    }
    /// <p>The template resource types that you have permissions to work with for this update stack action, such as <code>AWS::EC2::Instance</code>, <code>AWS::EC2::*</code>, or <code>Custom::MyCustomInstance</code>.</p>
    /// <p>If the list of resource types doesn't include a resource that you're updating, the stack update fails. By default, CloudFormation grants permissions to all resource types. Identity and Access Management (IAM) uses this parameter for CloudFormation-specific condition keys in IAM policies. For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html">Controlling Access with Identity and Access Management</a>.</p><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub fn set_resource_types(mut self, input: ::std::option::Option<::std::vec::Vec<::std::string::String>>) -> Self {
        self.resource_types = input;
        self
    }
    /// <p>The template resource types that you have permissions to work with for this update stack action, such as <code>AWS::EC2::Instance</code>, <code>AWS::EC2::*</code>, or <code>Custom::MyCustomInstance</code>.</p>
    /// <p>If the list of resource types doesn't include a resource that you're updating, the stack update fails. By default, CloudFormation grants permissions to all resource types. Identity and Access Management (IAM) uses this parameter for CloudFormation-specific condition keys in IAM policies. For more information, see <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-iam-template.html">Controlling Access with Identity and Access Management</a>.</p><note>
    /// <p>Only one of the <code>Capabilities</code> and <code>ResourceType</code> parameters can be specified.</p>
    /// </note>
    pub fn get_resource_types(&self) -> &::std::option::Option<::std::vec::Vec<::std::string::String>> {
        &self.resource_types
    }
    /// <p>The Amazon Resource Name (ARN) of an Identity and Access Management (IAM) role that CloudFormation assumes to update the stack. CloudFormation uses the role's credentials to make calls on your behalf. CloudFormation always uses this role for all future operations on the stack. Provided that users have permission to operate on the stack, CloudFormation uses this role even if the users don't have permission to pass it. Ensure that the role grants least privilege.</p>
    /// <p>If you don't specify a value, CloudFormation uses the role that was previously associated with the stack. If no role is available, CloudFormation uses a temporary session that is generated from your user credentials.</p>
    pub fn role_arn(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.role_arn = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>The Amazon Resource Name (ARN) of an Identity and Access Management (IAM) role that CloudFormation assumes to update the stack. CloudFormation uses the role's credentials to make calls on your behalf. CloudFormation always uses this role for all future operations on the stack. Provided that users have permission to operate on the stack, CloudFormation uses this role even if the users don't have permission to pass it. Ensure that the role grants least privilege.</p>
    /// <p>If you don't specify a value, CloudFormation uses the role that was previously associated with the stack. If no role is available, CloudFormation uses a temporary session that is generated from your user credentials.</p>
    pub fn set_role_arn(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.role_arn = input;
        self
    }
    /// <p>The Amazon Resource Name (ARN) of an Identity and Access Management (IAM) role that CloudFormation assumes to update the stack. CloudFormation uses the role's credentials to make calls on your behalf. CloudFormation always uses this role for all future operations on the stack. Provided that users have permission to operate on the stack, CloudFormation uses this role even if the users don't have permission to pass it. Ensure that the role grants least privilege.</p>
    /// <p>If you don't specify a value, CloudFormation uses the role that was previously associated with the stack. If no role is available, CloudFormation uses a temporary session that is generated from your user credentials.</p>
    pub fn get_role_arn(&self) -> &::std::option::Option<::std::string::String> {
        &self.role_arn
    }
    /// <p>The rollback triggers for CloudFormation to monitor during stack creation and updating operations, and for the specified monitoring period afterwards.</p>
    pub fn rollback_configuration(mut self, input: crate::types::RollbackConfiguration) -> Self {
        self.rollback_configuration = ::std::option::Option::Some(input);
        self
    }
    /// <p>The rollback triggers for CloudFormation to monitor during stack creation and updating operations, and for the specified monitoring period afterwards.</p>
    pub fn set_rollback_configuration(mut self, input: ::std::option::Option<crate::types::RollbackConfiguration>) -> Self {
        self.rollback_configuration = input;
        self
    }
    /// <p>The rollback triggers for CloudFormation to monitor during stack creation and updating operations, and for the specified monitoring period afterwards.</p>
    pub fn get_rollback_configuration(&self) -> &::std::option::Option<crate::types::RollbackConfiguration> {
        &self.rollback_configuration
    }
    /// <p>Structure containing a new stack policy body. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn stack_policy_body(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.stack_policy_body = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>Structure containing a new stack policy body. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn set_stack_policy_body(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.stack_policy_body = input;
        self
    }
    /// <p>Structure containing a new stack policy body. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn get_stack_policy_body(&self) -> &::std::option::Option<::std::string::String> {
        &self.stack_policy_body
    }
    /// <p>Location of a file containing the updated stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn stack_policy_url(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.stack_policy_url = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>Location of a file containing the updated stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn set_stack_policy_url(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.stack_policy_url = input;
        self
    }
    /// <p>Location of a file containing the updated stack policy. The URL must point to a policy (max size: 16KB) located in an S3 bucket in the same Region as the stack. The location for an Amazon S3 bucket must start with <code>https://</code>. You can specify either the <code>StackPolicyBody</code> or the <code>StackPolicyURL</code> parameter, but not both.</p>
    /// <p>You might update the stack policy, for example, in order to protect a new resource that you created during a stack update. If you don't specify a stack policy, the current policy that is associated with the stack is unchanged.</p>
    pub fn get_stack_policy_url(&self) -> &::std::option::Option<::std::string::String> {
        &self.stack_policy_url
    }
    /// Appends an item to `notification_arns`.
    ///
    /// To override the contents of this collection use [`set_notification_arns`](Self::set_notification_arns).
    ///
    /// <p>Amazon Simple Notification Service topic Amazon Resource Names (ARNs) that CloudFormation associates with the stack. Specify an empty list to remove all notification topics.</p>
    pub fn notification_arns(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        let mut v = self.notification_arns.unwrap_or_default();
        v.push(input.into());
        self.notification_arns = ::std::option::Option::Some(v);
        self
    }
    /// <p>Amazon Simple Notification Service topic Amazon Resource Names (ARNs) that CloudFormation associates with the stack. Specify an empty list to remove all notification topics.</p>
    pub fn set_notification_arns(mut self, input: ::std::option::Option<::std::vec::Vec<::std::string::String>>) -> Self {
        self.notification_arns = input;
        self
    }
    /// <p>Amazon Simple Notification Service topic Amazon Resource Names (ARNs) that CloudFormation associates with the stack. Specify an empty list to remove all notification topics.</p>
    pub fn get_notification_arns(&self) -> &::std::option::Option<::std::vec::Vec<::std::string::String>> {
        &self.notification_arns
    }
    /// Appends an item to `tags`.
    ///
    /// To override the contents of this collection use [`set_tags`](Self::set_tags).
    ///
    /// <p>Key-value pairs to associate with this stack. CloudFormation also propagates these tags to supported resources in the stack. You can specify a maximum number of 50 tags.</p>
    /// <p>If you don't specify this parameter, CloudFormation doesn't modify the stack's tags. If you specify an empty value, CloudFormation removes all associated tags.</p>
    pub fn tags(mut self, input: crate::types::Tag) -> Self {
        let mut v = self.tags.unwrap_or_default();
        v.push(input);
        self.tags = ::std::option::Option::Some(v);
        self
    }
    /// <p>Key-value pairs to associate with this stack. CloudFormation also propagates these tags to supported resources in the stack. You can specify a maximum number of 50 tags.</p>
    /// <p>If you don't specify this parameter, CloudFormation doesn't modify the stack's tags. If you specify an empty value, CloudFormation removes all associated tags.</p>
    pub fn set_tags(mut self, input: ::std::option::Option<::std::vec::Vec<crate::types::Tag>>) -> Self {
        self.tags = input;
        self
    }
    /// <p>Key-value pairs to associate with this stack. CloudFormation also propagates these tags to supported resources in the stack. You can specify a maximum number of 50 tags.</p>
    /// <p>If you don't specify this parameter, CloudFormation doesn't modify the stack's tags. If you specify an empty value, CloudFormation removes all associated tags.</p>
    pub fn get_tags(&self) -> &::std::option::Option<::std::vec::Vec<crate::types::Tag>> {
        &self.tags
    }
    /// <p>Preserve the state of previously provisioned resources when an operation fails.</p>
    /// <p>Default: <code>False</code></p>
    pub fn disable_rollback(mut self, input: bool) -> Self {
        self.disable_rollback = ::std::option::Option::Some(input);
        self
    }
    /// <p>Preserve the state of previously provisioned resources when an operation fails.</p>
    /// <p>Default: <code>False</code></p>
    pub fn set_disable_rollback(mut self, input: ::std::option::Option<bool>) -> Self {
        self.disable_rollback = input;
        self
    }
    /// <p>Preserve the state of previously provisioned resources when an operation fails.</p>
    /// <p>Default: <code>False</code></p>
    pub fn get_disable_rollback(&self) -> &::std::option::Option<bool> {
        &self.disable_rollback
    }
    /// <p>A unique identifier for this <code>UpdateStack</code> request. Specify this token if you plan to retry requests so that CloudFormation knows that you're not attempting to update a stack with the same name. You might retry <code>UpdateStack</code> requests to ensure that CloudFormation successfully received them.</p>
    /// <p>All events triggered by a given stack operation are assigned the same client request token, which you can use to track operations. For example, if you execute a <code>CreateStack</code> operation with the token <code>token1</code>, then all the <code>StackEvents</code> generated by that operation will have <code>ClientRequestToken</code> set as <code>token1</code>.</p>
    /// <p>In the console, stack operations display the client request token on the Events tab. Stack operations that are initiated from the console use the token format <i>Console-StackOperation-ID</i>, which helps you easily identify the stack operation . For example, if you create a stack using the console, each stack event would be assigned the same token in the following format: <code>Console-CreateStack-7f59c3cf-00d2-40c7-b2ff-e75db0987002</code>.</p>
    pub fn client_request_token(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
        self.client_request_token = ::std::option::Option::Some(input.into());
        self
    }
    /// <p>A unique identifier for this <code>UpdateStack</code> request. Specify this token if you plan to retry requests so that CloudFormation knows that you're not attempting to update a stack with the same name. You might retry <code>UpdateStack</code> requests to ensure that CloudFormation successfully received them.</p>
    /// <p>All events triggered by a given stack operation are assigned the same client request token, which you can use to track operations. For example, if you execute a <code>CreateStack</code> operation with the token <code>token1</code>, then all the <code>StackEvents</code> generated by that operation will have <code>ClientRequestToken</code> set as <code>token1</code>.</p>
    /// <p>In the console, stack operations display the client request token on the Events tab. Stack operations that are initiated from the console use the token format <i>Console-StackOperation-ID</i>, which helps you easily identify the stack operation . For example, if you create a stack using the console, each stack event would be assigned the same token in the following format: <code>Console-CreateStack-7f59c3cf-00d2-40c7-b2ff-e75db0987002</code>.</p>
    pub fn set_client_request_token(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
        self.client_request_token = input;
        self
    }
    /// <p>A unique identifier for this <code>UpdateStack</code> request. Specify this token if you plan to retry requests so that CloudFormation knows that you're not attempting to update a stack with the same name. You might retry <code>UpdateStack</code> requests to ensure that CloudFormation successfully received them.</p>
    /// <p>All events triggered by a given stack operation are assigned the same client request token, which you can use to track operations. For example, if you execute a <code>CreateStack</code> operation with the token <code>token1</code>, then all the <code>StackEvents</code> generated by that operation will have <code>ClientRequestToken</code> set as <code>token1</code>.</p>
    /// <p>In the console, stack operations display the client request token on the Events tab. Stack operations that are initiated from the console use the token format <i>Console-StackOperation-ID</i>, which helps you easily identify the stack operation . For example, if you create a stack using the console, each stack event would be assigned the same token in the following format: <code>Console-CreateStack-7f59c3cf-00d2-40c7-b2ff-e75db0987002</code>.</p>
    pub fn get_client_request_token(&self) -> &::std::option::Option<::std::string::String> {
        &self.client_request_token
    }
    /// <p>When set to <code>true</code>, newly created resources are deleted when the operation rolls back. This includes newly created resources marked with a deletion policy of <code>Retain</code>.</p>
    /// <p>Default: <code>false</code></p>
    pub fn retain_except_on_create(mut self, input: bool) -> Self {
        self.retain_except_on_create = ::std::option::Option::Some(input);
        self
    }
    /// <p>When set to <code>true</code>, newly created resources are deleted when the operation rolls back. This includes newly created resources marked with a deletion policy of <code>Retain</code>.</p>
    /// <p>Default: <code>false</code></p>
    pub fn set_retain_except_on_create(mut self, input: ::std::option::Option<bool>) -> Self {
        self.retain_except_on_create = input;
        self
    }
    /// <p>When set to <code>true</code>, newly created resources are deleted when the operation rolls back. This includes newly created resources marked with a deletion policy of <code>Retain</code>.</p>
    /// <p>Default: <code>false</code></p>
    pub fn get_retain_except_on_create(&self) -> &::std::option::Option<bool> {
        &self.retain_except_on_create
    }
    /// Consumes the builder and constructs a [`UpdateStackInput`](crate::operation::update_stack::UpdateStackInput).
    pub fn build(self) -> ::std::result::Result<crate::operation::update_stack::UpdateStackInput, ::aws_smithy_types::error::operation::BuildError> {
        ::std::result::Result::Ok(crate::operation::update_stack::UpdateStackInput {
            stack_name: self.stack_name,
            template_body: self.template_body,
            template_url: self.template_url,
            use_previous_template: self.use_previous_template,
            stack_policy_during_update_body: self.stack_policy_during_update_body,
            stack_policy_during_update_url: self.stack_policy_during_update_url,
            parameters: self.parameters,
            capabilities: self.capabilities,
            resource_types: self.resource_types,
            role_arn: self.role_arn,
            rollback_configuration: self.rollback_configuration,
            stack_policy_body: self.stack_policy_body,
            stack_policy_url: self.stack_policy_url,
            notification_arns: self.notification_arns,
            tags: self.tags,
            disable_rollback: self.disable_rollback,
            client_request_token: self.client_request_token,
            retain_except_on_create: self.retain_except_on_create,
        })
    }
}