Enum aws_sdk_ec2::model::NetworkInterfaceCreationType

#[non_exhaustive]
pub enum NetworkInterfaceCreationType {
    Branch,
    Efa,
    Trunk,
    Unknown(UnknownVariantValue),
}

When writing a match expression against NetworkInterfaceCreationType, 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 networkinterfacecreationtype = unimplemented!();
match networkinterfacecreationtype {
    NetworkInterfaceCreationType::Branch => { /* ... */ },
    NetworkInterfaceCreationType::Efa => { /* ... */ },
    NetworkInterfaceCreationType::Trunk => { /* ... */ },
    other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
    _ => { /* ... */ },
}

The above code demonstrates that when networkinterfacecreationtype represents NewFeature, the execution path will lead to the second last match arm, even though the enum does not contain a variant NetworkInterfaceCreationType::NewFeature in the current version of SDK. The reason is that the variable other, created by the @ operator, is bound to NetworkInterfaceCreationType::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 NetworkInterfaceCreationType::NewFeature is defined. Specifically, when networkinterfacecreationtype represents NewFeature, the execution path will hit the second last match arm as before by virtue of calling as_str on NetworkInterfaceCreationType::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.

Branch

Efa

Trunk

Unknown(UnknownVariantValue)

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

Implementations

impl NetworkInterfaceCreationType

pub fn as_str(&self) -> &str

Returns the &str value of the enum member.

Examples found in repository

src/model.rs (line 118610)

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

src/operation_ser.rs (line 3831)

pub fn serialize_operation_crate_operation_create_network_interface(
    input: &crate::input::CreateNetworkInterfaceInput,
) -> Result<aws_smithy_http::body::SdkBody, aws_smithy_http::operation::error::SerializationError> {
    let mut out = String::new();
    #[allow(unused_mut)]
    let mut writer =
        aws_smithy_query::QueryWriter::new(&mut out, "CreateNetworkInterface", "2016-11-15");
    #[allow(unused_mut)]
    let mut scope_1073 = writer.prefix("Description");
    if let Some(var_1074) = &input.description {
        scope_1073.string(var_1074);
    }
    #[allow(unused_mut)]
    let mut scope_1075 = writer.prefix("DryRun");
    if let Some(var_1076) = &input.dry_run {
        scope_1075.boolean(*var_1076);
    }
    #[allow(unused_mut)]
    let mut scope_1077 = writer.prefix("SecurityGroupId");
    if let Some(var_1078) = &input.groups {
        let mut list_1080 = scope_1077.start_list(true, Some("SecurityGroupId"));
        for item_1079 in var_1078 {
            #[allow(unused_mut)]
            let mut entry_1081 = list_1080.entry();
            entry_1081.string(item_1079);
        }
        list_1080.finish();
    }
    #[allow(unused_mut)]
    let mut scope_1082 = writer.prefix("Ipv6AddressCount");
    if let Some(var_1083) = &input.ipv6_address_count {
        scope_1082.number(
            #[allow(clippy::useless_conversion)]
            aws_smithy_types::Number::NegInt((*var_1083).into()),
        );
    }
    #[allow(unused_mut)]
    let mut scope_1084 = writer.prefix("Ipv6Addresses");
    if let Some(var_1085) = &input.ipv6_addresses {
        let mut list_1087 = scope_1084.start_list(true, Some("item"));
        for item_1086 in var_1085 {
            #[allow(unused_mut)]
            let mut entry_1088 = list_1087.entry();
            crate::query_ser::serialize_structure_crate_model_instance_ipv6_address(
                entry_1088, item_1086,
            )?;
        }
        list_1087.finish();
    }
    #[allow(unused_mut)]
    let mut scope_1089 = writer.prefix("PrivateIpAddress");
    if let Some(var_1090) = &input.private_ip_address {
        scope_1089.string(var_1090);
    }
    #[allow(unused_mut)]
    let mut scope_1091 = writer.prefix("PrivateIpAddresses");
    if let Some(var_1092) = &input.private_ip_addresses {
        let mut list_1094 = scope_1091.start_list(true, Some("item"));
        for item_1093 in var_1092 {
            #[allow(unused_mut)]
            let mut entry_1095 = list_1094.entry();
            crate::query_ser::serialize_structure_crate_model_private_ip_address_specification(
                entry_1095, item_1093,
            )?;
        }
        list_1094.finish();
    }
    #[allow(unused_mut)]
    let mut scope_1096 = writer.prefix("SecondaryPrivateIpAddressCount");
    if let Some(var_1097) = &input.secondary_private_ip_address_count {
        scope_1096.number(
            #[allow(clippy::useless_conversion)]
            aws_smithy_types::Number::NegInt((*var_1097).into()),
        );
    }
    #[allow(unused_mut)]
    let mut scope_1098 = writer.prefix("Ipv4Prefix");
    if let Some(var_1099) = &input.ipv4_prefixes {
        let mut list_1101 = scope_1098.start_list(true, Some("item"));
        for item_1100 in var_1099 {
            #[allow(unused_mut)]
            let mut entry_1102 = list_1101.entry();
            crate::query_ser::serialize_structure_crate_model_ipv4_prefix_specification_request(
                entry_1102, item_1100,
            )?;
        }
        list_1101.finish();
    }
    #[allow(unused_mut)]
    let mut scope_1103 = writer.prefix("Ipv4PrefixCount");
    if let Some(var_1104) = &input.ipv4_prefix_count {
        scope_1103.number(
            #[allow(clippy::useless_conversion)]
            aws_smithy_types::Number::NegInt((*var_1104).into()),
        );
    }
    #[allow(unused_mut)]
    let mut scope_1105 = writer.prefix("Ipv6Prefix");
    if let Some(var_1106) = &input.ipv6_prefixes {
        let mut list_1108 = scope_1105.start_list(true, Some("item"));
        for item_1107 in var_1106 {
            #[allow(unused_mut)]
            let mut entry_1109 = list_1108.entry();
            crate::query_ser::serialize_structure_crate_model_ipv6_prefix_specification_request(
                entry_1109, item_1107,
            )?;
        }
        list_1108.finish();
    }
    #[allow(unused_mut)]
    let mut scope_1110 = writer.prefix("Ipv6PrefixCount");
    if let Some(var_1111) = &input.ipv6_prefix_count {
        scope_1110.number(
            #[allow(clippy::useless_conversion)]
            aws_smithy_types::Number::NegInt((*var_1111).into()),
        );
    }
    #[allow(unused_mut)]
    let mut scope_1112 = writer.prefix("InterfaceType");
    if let Some(var_1113) = &input.interface_type {
        scope_1112.string(var_1113.as_str());
    }
    #[allow(unused_mut)]
    let mut scope_1114 = writer.prefix("SubnetId");
    if let Some(var_1115) = &input.subnet_id {
        scope_1114.string(var_1115);
    }
    #[allow(unused_mut)]
    let mut scope_1116 = writer.prefix("TagSpecification");
    if let Some(var_1117) = &input.tag_specifications {
        let mut list_1119 = scope_1116.start_list(true, Some("item"));
        for item_1118 in var_1117 {
            #[allow(unused_mut)]
            let mut entry_1120 = list_1119.entry();
            crate::query_ser::serialize_structure_crate_model_tag_specification(
                entry_1120, item_1118,
            )?;
        }
        list_1119.finish();
    }
    #[allow(unused_mut)]
    let mut scope_1121 = writer.prefix("ClientToken");
    if let Some(var_1122) = &input.client_token {
        scope_1121.string(var_1122);
    }
    writer.finish();
    Ok(aws_smithy_http::body::SdkBody::from(out))
}

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

Returns all the &str values of the enum members.

Trait Implementations

impl AsRef<str> for NetworkInterfaceCreationType

fn as_ref(&self) -> &str

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

impl Clone for NetworkInterfaceCreationType

fn clone(&self) -> NetworkInterfaceCreationType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for NetworkInterfaceCreationType

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

Formats the value using the given formatter.

impl From<&str> for NetworkInterfaceCreationType

fn from(s: &str) -> Self

Converts to this type from the input type.

impl FromStr for NetworkInterfaceCreationType

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 NetworkInterfaceCreationType

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 NetworkInterfaceCreationType

fn cmp(&self, other: &NetworkInterfaceCreationType) -> 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<NetworkInterfaceCreationType> for NetworkInterfaceCreationType

fn eq(&self, other: &NetworkInterfaceCreationType) -> 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<NetworkInterfaceCreationType> for NetworkInterfaceCreationType

fn partial_cmp(&self, other: &NetworkInterfaceCreationType) -> 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 NetworkInterfaceCreationType

impl StructuralEq for NetworkInterfaceCreationType

impl StructuralPartialEq for NetworkInterfaceCreationType