Enum aws_sdk_iot::model::TargetSelection

#[non_exhaustive]
pub enum TargetSelection {
    Continuous,
    Snapshot,
    Unknown(UnknownVariantValue),
}

When writing a match expression against TargetSelection, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

Here is an example of how you can make a match expression forward-compatible:

# let targetselection = unimplemented!();
match targetselection {
    TargetSelection::Continuous => { /* ... */ },
    TargetSelection::Snapshot => { /* ... */ },
    other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
    _ => { /* ... */ },
}

The above code demonstrates that when targetselection represents NewFeature, the execution path will lead to the second last match arm, even though the enum does not contain a variant TargetSelection::NewFeature in the current version of SDK. The reason is that the variable other, created by the @ operator, is bound to TargetSelection::Unknown(UnknownVariantValue("NewFeature".to_owned())) and calling as_str on it yields "NewFeature". This match expression is forward-compatible when executed with a newer version of SDK where the variant TargetSelection::NewFeature is defined. Specifically, when targetselection represents NewFeature, the execution path will hit the second last match arm as before by virtue of calling as_str on TargetSelection::NewFeature also yielding "NewFeature".

Explicitly matching on the Unknown variant should be avoided for two reasons:

• The inner data UnknownVariantValue is opaque, and no further information can be extracted.
• It might inadvertently shadow other intended match arms.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Continuous

Snapshot

Unknown(UnknownVariantValue)

Unknown contains new variants that have been added since this code was generated.

Implementations

impl TargetSelection

pub fn as_str(&self) -> &str

Returns the &str value of the enum member.

Examples found in repository

src/model.rs (line 17393)

    fn as_ref(&self) -> &str {
        self.as_str()
    }

src/json_ser.rs (line 495)

pub fn serialize_structure_crate_input_create_job_input(
    object: &mut aws_smithy_json::serialize::JsonObjectWriter,
    input: &crate::input::CreateJobInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
    if let Some(var_98) = &input.abort_config {
        #[allow(unused_mut)]
        let mut object_99 = object.key("abortConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_abort_config(&mut object_99, var_98)?;
        object_99.finish();
    }
    if let Some(var_100) = &input.description {
        object.key("description").string(var_100.as_str());
    }
    if let Some(var_101) = &input.document {
        object.key("document").string(var_101.as_str());
    }
    if let Some(var_102) = &input.document_parameters {
        #[allow(unused_mut)]
        let mut object_103 = object.key("documentParameters").start_object();
        for (key_104, value_105) in var_102 {
            {
                object_103.key(key_104.as_str()).string(value_105.as_str());
            }
        }
        object_103.finish();
    }
    if let Some(var_106) = &input.document_source {
        object.key("documentSource").string(var_106.as_str());
    }
    if let Some(var_107) = &input.job_executions_retry_config {
        #[allow(unused_mut)]
        let mut object_108 = object.key("jobExecutionsRetryConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_job_executions_retry_config(
            &mut object_108,
            var_107,
        )?;
        object_108.finish();
    }
    if let Some(var_109) = &input.job_executions_rollout_config {
        #[allow(unused_mut)]
        let mut object_110 = object.key("jobExecutionsRolloutConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_job_executions_rollout_config(
            &mut object_110,
            var_109,
        )?;
        object_110.finish();
    }
    if let Some(var_111) = &input.job_template_arn {
        object.key("jobTemplateArn").string(var_111.as_str());
    }
    if let Some(var_112) = &input.namespace_id {
        object.key("namespaceId").string(var_112.as_str());
    }
    if let Some(var_113) = &input.presigned_url_config {
        #[allow(unused_mut)]
        let mut object_114 = object.key("presignedUrlConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_presigned_url_config(
            &mut object_114,
            var_113,
        )?;
        object_114.finish();
    }
    if let Some(var_115) = &input.tags {
        let mut array_116 = object.key("tags").start_array();
        for item_117 in var_115 {
            {
                #[allow(unused_mut)]
                let mut object_118 = array_116.value().start_object();
                crate::json_ser::serialize_structure_crate_model_tag(&mut object_118, item_117)?;
                object_118.finish();
            }
        }
        array_116.finish();
    }
    if let Some(var_119) = &input.target_selection {
        object.key("targetSelection").string(var_119.as_str());
    }
    if let Some(var_120) = &input.targets {
        let mut array_121 = object.key("targets").start_array();
        for item_122 in var_120 {
            {
                array_121.value().string(item_122.as_str());
            }
        }
        array_121.finish();
    }
    if let Some(var_123) = &input.timeout_config {
        #[allow(unused_mut)]
        let mut object_124 = object.key("timeoutConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_timeout_config(&mut object_124, var_123)?;
        object_124.finish();
    }
    Ok(())
}

pub fn serialize_structure_crate_input_create_job_template_input(
    object: &mut aws_smithy_json::serialize::JsonObjectWriter,
    input: &crate::input::CreateJobTemplateInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
    if let Some(var_125) = &input.abort_config {
        #[allow(unused_mut)]
        let mut object_126 = object.key("abortConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_abort_config(&mut object_126, var_125)?;
        object_126.finish();
    }
    if let Some(var_127) = &input.description {
        object.key("description").string(var_127.as_str());
    }
    if let Some(var_128) = &input.document {
        object.key("document").string(var_128.as_str());
    }
    if let Some(var_129) = &input.document_source {
        object.key("documentSource").string(var_129.as_str());
    }
    if let Some(var_130) = &input.job_arn {
        object.key("jobArn").string(var_130.as_str());
    }
    if let Some(var_131) = &input.job_executions_retry_config {
        #[allow(unused_mut)]
        let mut object_132 = object.key("jobExecutionsRetryConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_job_executions_retry_config(
            &mut object_132,
            var_131,
        )?;
        object_132.finish();
    }
    if let Some(var_133) = &input.job_executions_rollout_config {
        #[allow(unused_mut)]
        let mut object_134 = object.key("jobExecutionsRolloutConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_job_executions_rollout_config(
            &mut object_134,
            var_133,
        )?;
        object_134.finish();
    }
    if let Some(var_135) = &input.presigned_url_config {
        #[allow(unused_mut)]
        let mut object_136 = object.key("presignedUrlConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_presigned_url_config(
            &mut object_136,
            var_135,
        )?;
        object_136.finish();
    }
    if let Some(var_137) = &input.tags {
        let mut array_138 = object.key("tags").start_array();
        for item_139 in var_137 {
            {
                #[allow(unused_mut)]
                let mut object_140 = array_138.value().start_object();
                crate::json_ser::serialize_structure_crate_model_tag(&mut object_140, item_139)?;
                object_140.finish();
            }
        }
        array_138.finish();
    }
    if let Some(var_141) = &input.timeout_config {
        #[allow(unused_mut)]
        let mut object_142 = object.key("timeoutConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_timeout_config(&mut object_142, var_141)?;
        object_142.finish();
    }
    Ok(())
}

pub fn serialize_structure_crate_input_create_mitigation_action_input(
    object: &mut aws_smithy_json::serialize::JsonObjectWriter,
    input: &crate::input::CreateMitigationActionInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
    if let Some(var_143) = &input.action_params {
        #[allow(unused_mut)]
        let mut object_144 = object.key("actionParams").start_object();
        crate::json_ser::serialize_structure_crate_model_mitigation_action_params(
            &mut object_144,
            var_143,
        )?;
        object_144.finish();
    }
    if let Some(var_145) = &input.role_arn {
        object.key("roleArn").string(var_145.as_str());
    }
    if let Some(var_146) = &input.tags {
        let mut array_147 = object.key("tags").start_array();
        for item_148 in var_146 {
            {
                #[allow(unused_mut)]
                let mut object_149 = array_147.value().start_object();
                crate::json_ser::serialize_structure_crate_model_tag(&mut object_149, item_148)?;
                object_149.finish();
            }
        }
        array_147.finish();
    }
    Ok(())
}

pub fn serialize_structure_crate_input_create_ota_update_input(
    object: &mut aws_smithy_json::serialize::JsonObjectWriter,
    input: &crate::input::CreateOtaUpdateInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
    if let Some(var_150) = &input.additional_parameters {
        #[allow(unused_mut)]
        let mut object_151 = object.key("additionalParameters").start_object();
        for (key_152, value_153) in var_150 {
            {
                object_151.key(key_152.as_str()).string(value_153.as_str());
            }
        }
        object_151.finish();
    }
    if let Some(var_154) = &input.aws_job_abort_config {
        #[allow(unused_mut)]
        let mut object_155 = object.key("awsJobAbortConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_aws_job_abort_config(
            &mut object_155,
            var_154,
        )?;
        object_155.finish();
    }
    if let Some(var_156) = &input.aws_job_executions_rollout_config {
        #[allow(unused_mut)]
        let mut object_157 = object.key("awsJobExecutionsRolloutConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_aws_job_executions_rollout_config(
            &mut object_157,
            var_156,
        )?;
        object_157.finish();
    }
    if let Some(var_158) = &input.aws_job_presigned_url_config {
        #[allow(unused_mut)]
        let mut object_159 = object.key("awsJobPresignedUrlConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_aws_job_presigned_url_config(
            &mut object_159,
            var_158,
        )?;
        object_159.finish();
    }
    if let Some(var_160) = &input.aws_job_timeout_config {
        #[allow(unused_mut)]
        let mut object_161 = object.key("awsJobTimeoutConfig").start_object();
        crate::json_ser::serialize_structure_crate_model_aws_job_timeout_config(
            &mut object_161,
            var_160,
        )?;
        object_161.finish();
    }
    if let Some(var_162) = &input.description {
        object.key("description").string(var_162.as_str());
    }
    if let Some(var_163) = &input.files {
        let mut array_164 = object.key("files").start_array();
        for item_165 in var_163 {
            {
                #[allow(unused_mut)]
                let mut object_166 = array_164.value().start_object();
                crate::json_ser::serialize_structure_crate_model_ota_update_file(
                    &mut object_166,
                    item_165,
                )?;
                object_166.finish();
            }
        }
        array_164.finish();
    }
    if let Some(var_167) = &input.protocols {
        let mut array_168 = object.key("protocols").start_array();
        for item_169 in var_167 {
            {
                array_168.value().string(item_169.as_str());
            }
        }
        array_168.finish();
    }
    if let Some(var_170) = &input.role_arn {
        object.key("roleArn").string(var_170.as_str());
    }
    if let Some(var_171) = &input.tags {
        let mut array_172 = object.key("tags").start_array();
        for item_173 in var_171 {
            {
                #[allow(unused_mut)]
                let mut object_174 = array_172.value().start_object();
                crate::json_ser::serialize_structure_crate_model_tag(&mut object_174, item_173)?;
                object_174.finish();
            }
        }
        array_172.finish();
    }
    if let Some(var_175) = &input.target_selection {
        object.key("targetSelection").string(var_175.as_str());
    }
    if let Some(var_176) = &input.targets {
        let mut array_177 = object.key("targets").start_array();
        for item_178 in var_176 {
            {
                array_177.value().string(item_178.as_str());
            }
        }
        array_177.finish();
    }
    Ok(())
}

pub const fn values() -> &'static [&'static str]

Returns all the &str values of the enum members.

Trait Implementations

impl AsRef<str> for TargetSelection

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for TargetSelection

fn clone(&self) -> TargetSelection

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TargetSelection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<&str> for TargetSelection

fn from(s: &str) -> Self

Converts to this type from the input type.

impl FromStr for TargetSelection

type Err = Infallible

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for TargetSelection

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for TargetSelection

fn cmp(&self, other: &TargetSelection) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<TargetSelection> for TargetSelection

fn eq(&self, other: &TargetSelection) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<TargetSelection> for TargetSelection

fn partial_cmp(&self, other: &TargetSelection) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for TargetSelection

impl StructuralEq for TargetSelection

impl StructuralPartialEq for TargetSelection