Enum aws_sdk_ec2::model::TransportProtocol

#[non_exhaustive]
pub enum TransportProtocol {
    Tcp,
    Udp,
    Unknown(UnknownVariantValue),
}

When writing a match expression against TransportProtocol, 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 transportprotocol = unimplemented!();
match transportprotocol {
    TransportProtocol::Tcp => { /* ... */ },
    TransportProtocol::Udp => { /* ... */ },
    other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
    _ => { /* ... */ },
}

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

Tcp

Udp

Unknown(UnknownVariantValue)

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

Implementations

impl TransportProtocol

pub fn as_str(&self) -> &str

Returns the &str value of the enum member.

Examples found in repository

src/model.rs (line 109808)

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

src/operation_ser.rs (line 2052)

pub fn serialize_operation_crate_operation_create_client_vpn_endpoint(
    input: &crate::input::CreateClientVpnEndpointInput,
) -> 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, "CreateClientVpnEndpoint", "2016-11-15");
    #[allow(unused_mut)]
    let mut scope_553 = writer.prefix("ClientCidrBlock");
    if let Some(var_554) = &input.client_cidr_block {
        scope_553.string(var_554);
    }
    #[allow(unused_mut)]
    let mut scope_555 = writer.prefix("ServerCertificateArn");
    if let Some(var_556) = &input.server_certificate_arn {
        scope_555.string(var_556);
    }
    #[allow(unused_mut)]
    let mut scope_557 = writer.prefix("Authentication");
    if let Some(var_558) = &input.authentication_options {
        let mut list_560 = scope_557.start_list(true, None);
        for item_559 in var_558 {
            #[allow(unused_mut)]
            let mut entry_561 = list_560.entry();
            crate::query_ser::serialize_structure_crate_model_client_vpn_authentication_request(
                entry_561, item_559,
            )?;
        }
        list_560.finish();
    }
    #[allow(unused_mut)]
    let mut scope_562 = writer.prefix("ConnectionLogOptions");
    if let Some(var_563) = &input.connection_log_options {
        crate::query_ser::serialize_structure_crate_model_connection_log_options(
            scope_562, var_563,
        )?;
    }
    #[allow(unused_mut)]
    let mut scope_564 = writer.prefix("DnsServers");
    if let Some(var_565) = &input.dns_servers {
        let mut list_567 = scope_564.start_list(true, Some("item"));
        for item_566 in var_565 {
            #[allow(unused_mut)]
            let mut entry_568 = list_567.entry();
            entry_568.string(item_566);
        }
        list_567.finish();
    }
    #[allow(unused_mut)]
    let mut scope_569 = writer.prefix("TransportProtocol");
    if let Some(var_570) = &input.transport_protocol {
        scope_569.string(var_570.as_str());
    }
    #[allow(unused_mut)]
    let mut scope_571 = writer.prefix("VpnPort");
    if let Some(var_572) = &input.vpn_port {
        scope_571.number(
            #[allow(clippy::useless_conversion)]
            aws_smithy_types::Number::NegInt((*var_572).into()),
        );
    }
    #[allow(unused_mut)]
    let mut scope_573 = writer.prefix("Description");
    if let Some(var_574) = &input.description {
        scope_573.string(var_574);
    }
    #[allow(unused_mut)]
    let mut scope_575 = writer.prefix("SplitTunnel");
    if let Some(var_576) = &input.split_tunnel {
        scope_575.boolean(*var_576);
    }
    #[allow(unused_mut)]
    let mut scope_577 = writer.prefix("DryRun");
    if let Some(var_578) = &input.dry_run {
        scope_577.boolean(*var_578);
    }
    #[allow(unused_mut)]
    let mut scope_579 = writer.prefix("ClientToken");
    if let Some(var_580) = &input.client_token {
        scope_579.string(var_580);
    }
    #[allow(unused_mut)]
    let mut scope_581 = writer.prefix("TagSpecification");
    if let Some(var_582) = &input.tag_specifications {
        let mut list_584 = scope_581.start_list(true, Some("item"));
        for item_583 in var_582 {
            #[allow(unused_mut)]
            let mut entry_585 = list_584.entry();
            crate::query_ser::serialize_structure_crate_model_tag_specification(
                entry_585, item_583,
            )?;
        }
        list_584.finish();
    }
    #[allow(unused_mut)]
    let mut scope_586 = writer.prefix("SecurityGroupId");
    if let Some(var_587) = &input.security_group_ids {
        let mut list_589 = scope_586.start_list(true, Some("item"));
        for item_588 in var_587 {
            #[allow(unused_mut)]
            let mut entry_590 = list_589.entry();
            entry_590.string(item_588);
        }
        list_589.finish();
    }
    #[allow(unused_mut)]
    let mut scope_591 = writer.prefix("VpcId");
    if let Some(var_592) = &input.vpc_id {
        scope_591.string(var_592);
    }
    #[allow(unused_mut)]
    let mut scope_593 = writer.prefix("SelfServicePortal");
    if let Some(var_594) = &input.self_service_portal {
        scope_593.string(var_594.as_str());
    }
    #[allow(unused_mut)]
    let mut scope_595 = writer.prefix("ClientConnectOptions");
    if let Some(var_596) = &input.client_connect_options {
        crate::query_ser::serialize_structure_crate_model_client_connect_options(
            scope_595, var_596,
        )?;
    }
    #[allow(unused_mut)]
    let mut scope_597 = writer.prefix("SessionTimeoutHours");
    if let Some(var_598) = &input.session_timeout_hours {
        scope_597.number(
            #[allow(clippy::useless_conversion)]
            aws_smithy_types::Number::NegInt((*var_598).into()),
        );
    }
    #[allow(unused_mut)]
    let mut scope_599 = writer.prefix("ClientLoginBannerOptions");
    if let Some(var_600) = &input.client_login_banner_options {
        crate::query_ser::serialize_structure_crate_model_client_login_banner_options(
            scope_599, var_600,
        )?;
    }
    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 TransportProtocol

fn as_ref(&self) -> &str

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

impl Clone for TransportProtocol

fn clone(&self) -> TransportProtocol

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TransportProtocol

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

Formats the value using the given formatter.

impl From<&str> for TransportProtocol

fn from(s: &str) -> Self

Converts to this type from the input type.

impl FromStr for TransportProtocol

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 TransportProtocol

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 TransportProtocol

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

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

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

impl StructuralEq for TransportProtocol

impl StructuralPartialEq for TransportProtocol