aws_sdk_support/operation/
add_communication_to_case.rs

1// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
2/// Orchestration and serialization glue logic for `AddCommunicationToCase`.
3#[derive(::std::clone::Clone, ::std::default::Default, ::std::fmt::Debug)]
4#[non_exhaustive]
5pub struct AddCommunicationToCase;
6impl AddCommunicationToCase {
7    /// Creates a new `AddCommunicationToCase`
8    pub fn new() -> Self {
9        Self
10    }
11    pub(crate) async fn orchestrate(
12        runtime_plugins: &::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins,
13        input: crate::operation::add_communication_to_case::AddCommunicationToCaseInput,
14    ) -> ::std::result::Result<
15        crate::operation::add_communication_to_case::AddCommunicationToCaseOutput,
16        ::aws_smithy_runtime_api::client::result::SdkError<
17            crate::operation::add_communication_to_case::AddCommunicationToCaseError,
18            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
19        >,
20    > {
21        let map_err = |err: ::aws_smithy_runtime_api::client::result::SdkError<
22            ::aws_smithy_runtime_api::client::interceptors::context::Error,
23            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
24        >| {
25            err.map_service_error(|err| {
26                err.downcast::<crate::operation::add_communication_to_case::AddCommunicationToCaseError>()
27                    .expect("correct error type")
28            })
29        };
30        let context = Self::orchestrate_with_stop_point(runtime_plugins, input, ::aws_smithy_runtime::client::orchestrator::StopPoint::None)
31            .await
32            .map_err(map_err)?;
33        let output = context.finalize().map_err(map_err)?;
34        ::std::result::Result::Ok(
35            output
36                .downcast::<crate::operation::add_communication_to_case::AddCommunicationToCaseOutput>()
37                .expect("correct output type"),
38        )
39    }
40
41    pub(crate) async fn orchestrate_with_stop_point(
42        runtime_plugins: &::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins,
43        input: crate::operation::add_communication_to_case::AddCommunicationToCaseInput,
44        stop_point: ::aws_smithy_runtime::client::orchestrator::StopPoint,
45    ) -> ::std::result::Result<
46        ::aws_smithy_runtime_api::client::interceptors::context::InterceptorContext,
47        ::aws_smithy_runtime_api::client::result::SdkError<
48            ::aws_smithy_runtime_api::client::interceptors::context::Error,
49            ::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
50        >,
51    > {
52        let input = ::aws_smithy_runtime_api::client::interceptors::context::Input::erase(input);
53        use ::tracing::Instrument;
54        ::aws_smithy_runtime::client::orchestrator::invoke_with_stop_point("Support", "AddCommunicationToCase", input, runtime_plugins, stop_point)
55            // Create a parent span for the entire operation. Includes a random, internal-only,
56            // seven-digit ID for the operation orchestration so that it can be correlated in the logs.
57            .instrument(::tracing::debug_span!(
58                "Support.AddCommunicationToCase",
59                "rpc.service" = "Support",
60                "rpc.method" = "AddCommunicationToCase",
61                "sdk_invocation_id" = ::fastrand::u32(1_000_000..10_000_000),
62                "rpc.system" = "aws-api",
63            ))
64            .await
65    }
66
67    pub(crate) fn operation_runtime_plugins(
68        client_runtime_plugins: ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins,
69        client_config: &crate::config::Config,
70        config_override: ::std::option::Option<crate::config::Builder>,
71    ) -> ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins {
72        let mut runtime_plugins = client_runtime_plugins.with_operation_plugin(Self::new());
73
74        if let ::std::option::Option::Some(config_override) = config_override {
75            for plugin in config_override.runtime_plugins.iter().cloned() {
76                runtime_plugins = runtime_plugins.with_operation_plugin(plugin);
77            }
78            runtime_plugins = runtime_plugins.with_operation_plugin(crate::config::ConfigOverrideRuntimePlugin::new(
79                config_override,
80                client_config.config.clone(),
81                &client_config.runtime_components,
82            ));
83        }
84        runtime_plugins
85    }
86}
87impl ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugin for AddCommunicationToCase {
88    fn config(&self) -> ::std::option::Option<::aws_smithy_types::config_bag::FrozenLayer> {
89        let mut cfg = ::aws_smithy_types::config_bag::Layer::new("AddCommunicationToCase");
90
91        cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedRequestSerializer::new(
92            AddCommunicationToCaseRequestSerializer,
93        ));
94        cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedResponseDeserializer::new(
95            AddCommunicationToCaseResponseDeserializer,
96        ));
97
98        cfg.store_put(::aws_smithy_runtime_api::client::auth::AuthSchemeOptionResolverParams::new(
99            crate::config::auth::Params::builder()
100                .operation_name("AddCommunicationToCase")
101                .build()
102                .expect("required fields set"),
103        ));
104
105        cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::Metadata::new(
106            "AddCommunicationToCase",
107            "Support",
108        ));
109        let mut signing_options = ::aws_runtime::auth::SigningOptions::default();
110        signing_options.double_uri_encode = true;
111        signing_options.content_sha256_header = false;
112        signing_options.normalize_uri_path = true;
113        signing_options.payload_override = None;
114
115        cfg.store_put(::aws_runtime::auth::SigV4OperationSigningConfig {
116            signing_options,
117            ..::std::default::Default::default()
118        });
119
120        ::std::option::Option::Some(cfg.freeze())
121    }
122
123    fn runtime_components(
124        &self,
125        _: &::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder,
126    ) -> ::std::borrow::Cow<'_, ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder> {
127        #[allow(unused_mut)]
128        let mut rcb = ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder::new("AddCommunicationToCase")
129            .with_interceptor(::aws_smithy_runtime_api::client::interceptors::SharedInterceptor::permanent(
130                AddCommunicationToCaseTelemetryInputCaptureInterceptor,
131            ))
132            .with_interceptor(::aws_smithy_runtime_api::client::interceptors::SharedInterceptor::permanent(
133                ::aws_smithy_runtime::client::stalled_stream_protection::StalledStreamProtectionInterceptor::default(),
134            ))
135            .with_interceptor(::aws_smithy_runtime_api::client::interceptors::SharedInterceptor::permanent(
136                AddCommunicationToCaseEndpointParamsInterceptor,
137            ))
138            .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::TransientErrorClassifier::<
139                crate::operation::add_communication_to_case::AddCommunicationToCaseError,
140            >::new())
141            .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::ModeledAsRetryableClassifier::<
142                crate::operation::add_communication_to_case::AddCommunicationToCaseError,
143            >::new())
144            .with_retry_classifier(::aws_runtime::retries::classifiers::AwsErrorCodeClassifier::<
145                crate::operation::add_communication_to_case::AddCommunicationToCaseError,
146            >::new());
147
148        ::std::borrow::Cow::Owned(rcb)
149    }
150}
151
152#[derive(Debug)]
153struct AddCommunicationToCaseTelemetryInputCaptureInterceptor;
154
155#[::aws_smithy_runtime_api::client::interceptors::dyn_dispatch_hint]
156impl ::aws_smithy_runtime_api::client::interceptors::Intercept for AddCommunicationToCaseTelemetryInputCaptureInterceptor {
157    fn name(&self) -> &'static str {
158        "AddCommunicationToCaseTelemetryInputCaptureInterceptor"
159    }
160
161    fn read_before_execution(
162        &self,
163        context: &::aws_smithy_runtime_api::client::interceptors::context::BeforeSerializationInterceptorContextRef<
164            '_,
165            ::aws_smithy_runtime_api::client::interceptors::context::Input,
166            ::aws_smithy_runtime_api::client::interceptors::context::Output,
167            ::aws_smithy_runtime_api::client::interceptors::context::Error,
168        >,
169        cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
170    ) -> ::std::result::Result<(), ::aws_smithy_runtime_api::box_error::BoxError> {
171        // Nothing to do unless the customer opted in by naming members to record.
172        let ::std::option::Option::Some(requested) = cfg
173            .load::<::aws_smithy_types::telemetry::RequestedTelemetryAttributes>()
174            .filter(|r| !r.is_empty())
175        else {
176            return ::std::result::Result::Ok(());
177        };
178
179        let ::std::option::Option::Some(input) = context.input().downcast_ref::<AddCommunicationToCaseInput>() else {
180            // A mismatched input is not this interceptor's concern; skip quietly.
181            return ::std::result::Result::Ok(());
182        };
183
184        let mut captured = ::aws_smithy_types::telemetry::CapturedTelemetryAttributes::default();
185        if requested.should_capture("caseId") {
186            if let ::std::option::Option::Some(value) = input.case_id.as_deref() {
187                captured.insert("caseId", value);
188            }
189        }
190        if requested.should_capture("communicationBody") {
191            if let ::std::option::Option::Some(value) = input.communication_body.as_deref() {
192                captured.insert("communicationBody", value);
193            }
194        }
195        if requested.should_capture("attachmentSetId") {
196            if let ::std::option::Option::Some(value) = input.attachment_set_id.as_deref() {
197                captured.insert("attachmentSetId", value);
198            }
199        }
200
201        cfg.interceptor_state().store_put(captured);
202        ::std::result::Result::Ok(())
203    }
204}
205#[derive(Debug)]
206struct AddCommunicationToCaseResponseDeserializer;
207impl ::aws_smithy_runtime_api::client::ser_de::DeserializeResponse for AddCommunicationToCaseResponseDeserializer {
208    fn deserialize_nonstreaming_with_config(
209        &self,
210        response: &::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
211        _cfg: &::aws_smithy_types::config_bag::ConfigBag,
212    ) -> ::aws_smithy_runtime_api::client::interceptors::context::OutputOrError {
213        let (success, status) = (response.status().is_success(), response.status().as_u16());
214        let headers = response.headers();
215        let body = response.body().bytes().expect("body loaded");
216        #[allow(unused_mut)]
217        let mut force_error = false;
218        ::tracing::debug!(request_id = ?::aws_types::request_id::RequestId::request_id(response));
219        let parse_result = if !success && status != 200 || force_error {
220            crate::protocol_serde::shape_add_communication_to_case::de_add_communication_to_case_http_error(status, headers, body)
221        } else {
222            crate::protocol_serde::shape_add_communication_to_case::de_add_communication_to_case_http_response(status, headers, body)
223        };
224        crate::protocol_serde::type_erase_result(parse_result)
225    }
226}
227#[derive(Debug)]
228struct AddCommunicationToCaseRequestSerializer;
229impl ::aws_smithy_runtime_api::client::ser_de::SerializeRequest for AddCommunicationToCaseRequestSerializer {
230    #[allow(unused_mut, clippy::let_and_return, clippy::needless_borrow, clippy::useless_conversion)]
231    fn serialize_input(
232        &self,
233        input: ::aws_smithy_runtime_api::client::interceptors::context::Input,
234        _cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
235    ) -> ::std::result::Result<::aws_smithy_runtime_api::client::orchestrator::HttpRequest, ::aws_smithy_runtime_api::box_error::BoxError> {
236        let input = input
237            .downcast::<crate::operation::add_communication_to_case::AddCommunicationToCaseInput>()
238            .expect("correct type");
239        let _header_serialization_settings = _cfg
240            .load::<crate::serialization_settings::HeaderSerializationSettings>()
241            .cloned()
242            .unwrap_or_default();
243        let mut request_builder = {
244            #[allow(clippy::uninlined_format_args)]
245            fn uri_base(
246                _input: &crate::operation::add_communication_to_case::AddCommunicationToCaseInput,
247                output: &mut ::std::string::String,
248            ) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::BuildError> {
249                use ::std::fmt::Write as _;
250                ::std::write!(output, "/").expect("formatting should succeed");
251                ::std::result::Result::Ok(())
252            }
253            #[allow(clippy::unnecessary_wraps)]
254            fn update_http_builder(
255                input: &crate::operation::add_communication_to_case::AddCommunicationToCaseInput,
256                builder: ::http_1x::request::Builder,
257            ) -> ::std::result::Result<::http_1x::request::Builder, ::aws_smithy_types::error::operation::BuildError> {
258                let mut uri = ::std::string::String::new();
259                uri_base(input, &mut uri)?;
260                ::std::result::Result::Ok(builder.method("POST").uri(uri))
261            }
262            let mut builder = update_http_builder(&input, ::http_1x::request::Builder::new())?;
263            builder = _header_serialization_settings.set_default_header(builder, ::http_1x::header::CONTENT_TYPE, "application/x-amz-json-1.1");
264            builder = _header_serialization_settings.set_default_header(
265                builder,
266                ::http_1x::header::HeaderName::from_static("x-amz-target"),
267                "AWSSupport_20130415.AddCommunicationToCase",
268            );
269            builder
270        };
271        let body = ::aws_smithy_types::body::SdkBody::from(
272            crate::protocol_serde::shape_add_communication_to_case::ser_add_communication_to_case_input(&input)?,
273        );
274        if let Some(content_length) = body.content_length() {
275            let content_length = content_length.to_string();
276            request_builder = _header_serialization_settings.set_default_header(request_builder, ::http_1x::header::CONTENT_LENGTH, &content_length);
277        }
278        ::std::result::Result::Ok(request_builder.body(body).expect("valid request").try_into().unwrap())
279    }
280}
281#[derive(Debug)]
282struct AddCommunicationToCaseEndpointParamsInterceptor;
283
284#[::aws_smithy_runtime_api::client::interceptors::dyn_dispatch_hint]
285impl ::aws_smithy_runtime_api::client::interceptors::Intercept for AddCommunicationToCaseEndpointParamsInterceptor {
286    fn name(&self) -> &'static str {
287        "AddCommunicationToCaseEndpointParamsInterceptor"
288    }
289
290    fn read_before_execution(
291        &self,
292        context: &::aws_smithy_runtime_api::client::interceptors::context::BeforeSerializationInterceptorContextRef<
293            '_,
294            ::aws_smithy_runtime_api::client::interceptors::context::Input,
295            ::aws_smithy_runtime_api::client::interceptors::context::Output,
296            ::aws_smithy_runtime_api::client::interceptors::context::Error,
297        >,
298        cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
299    ) -> ::std::result::Result<(), ::aws_smithy_runtime_api::box_error::BoxError> {
300        let _input = context
301            .input()
302            .downcast_ref::<AddCommunicationToCaseInput>()
303            .ok_or("failed to downcast to AddCommunicationToCaseInput")?;
304
305        let params = crate::config::endpoint::Params::builder()
306            .set_region(cfg.load::<::aws_types::region::Region>().map(|r| r.as_ref().to_owned()))
307            .set_use_dual_stack(cfg.load::<::aws_types::endpoint_config::UseDualStack>().map(|ty| ty.0))
308            .set_use_fips(cfg.load::<::aws_types::endpoint_config::UseFips>().map(|ty| ty.0))
309            .set_endpoint(cfg.load::<::aws_types::endpoint_config::EndpointUrl>().map(|ty| ty.0.clone()))
310            .build()
311            .map_err(|err| {
312                ::aws_smithy_runtime_api::client::interceptors::error::ContextAttachedError::new("endpoint params could not be built", err)
313            })?;
314        cfg.interceptor_state()
315            .store_put(::aws_smithy_runtime_api::client::endpoint::EndpointResolverParams::new(params));
316        ::std::result::Result::Ok(())
317    }
318}
319
320// The get_* functions below are generated from JMESPath expressions in the
321// operationContextParams trait. They target the operation's input shape.
322
323/// Error type for the `AddCommunicationToCaseError` operation.
324#[non_exhaustive]
325#[derive(::std::fmt::Debug)]
326pub enum AddCommunicationToCaseError {
327    /// <p>The expiration time of the attachment set has passed. The set expires 1 hour after it is created.</p>
328    AttachmentSetExpired(crate::types::error::AttachmentSetExpired),
329    /// <p>An attachment set with the specified ID could not be found.</p>
330    AttachmentSetIdNotFound(crate::types::error::AttachmentSetIdNotFound),
331    /// <p>The requested <code>caseId</code> couldn't be located.</p>
332    CaseIdNotFound(crate::types::error::CaseIdNotFound),
333    /// <p>An internal server error occurred.</p>
334    InternalServerError(crate::types::error::InternalServerError),
335    /// An unexpected error occurred (e.g., invalid JSON returned by the service or an unknown error code).
336    #[deprecated(note = "Matching `Unhandled` directly is not forwards compatible. Instead, match using a \
337    variable wildcard pattern and check `.code()`:
338     \
339    &nbsp;&nbsp;&nbsp;`err if err.code() == Some(\"SpecificExceptionCode\") => { /* handle the error */ }`
340     \
341    See [`ProvideErrorMetadata`](#impl-ProvideErrorMetadata-for-AddCommunicationToCaseError) for what information is available for the error.")]
342    Unhandled(crate::error::sealed_unhandled::Unhandled),
343}
344impl AddCommunicationToCaseError {
345    /// Creates the `AddCommunicationToCaseError::Unhandled` variant from any error type.
346    pub fn unhandled(
347        err: impl ::std::convert::Into<::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>>,
348    ) -> Self {
349        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
350            source: err.into(),
351            meta: ::std::default::Default::default(),
352        })
353    }
354
355    /// Creates the `AddCommunicationToCaseError::Unhandled` variant from an [`ErrorMetadata`](::aws_smithy_types::error::ErrorMetadata).
356    pub fn generic(err: ::aws_smithy_types::error::ErrorMetadata) -> Self {
357        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
358            source: err.clone().into(),
359            meta: err,
360        })
361    }
362    ///
363    /// Returns error metadata, which includes the error code, message,
364    /// request ID, and potentially additional information.
365    ///
366    pub fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
367        match self {
368            Self::AttachmentSetExpired(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
369            Self::AttachmentSetIdNotFound(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
370            Self::CaseIdNotFound(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
371            Self::InternalServerError(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
372            Self::Unhandled(e) => &e.meta,
373        }
374    }
375    /// Returns `true` if the error kind is `AddCommunicationToCaseError::AttachmentSetExpired`.
376    pub fn is_attachment_set_expired(&self) -> bool {
377        matches!(self, Self::AttachmentSetExpired(_))
378    }
379    /// Returns `true` if the error kind is `AddCommunicationToCaseError::AttachmentSetIdNotFound`.
380    pub fn is_attachment_set_id_not_found(&self) -> bool {
381        matches!(self, Self::AttachmentSetIdNotFound(_))
382    }
383    /// Returns `true` if the error kind is `AddCommunicationToCaseError::CaseIdNotFound`.
384    pub fn is_case_id_not_found(&self) -> bool {
385        matches!(self, Self::CaseIdNotFound(_))
386    }
387    /// Returns `true` if the error kind is `AddCommunicationToCaseError::InternalServerError`.
388    pub fn is_internal_server_error(&self) -> bool {
389        matches!(self, Self::InternalServerError(_))
390    }
391}
392impl ::std::error::Error for AddCommunicationToCaseError {
393    fn source(&self) -> ::std::option::Option<&(dyn ::std::error::Error + 'static)> {
394        match self {
395            Self::AttachmentSetExpired(_inner) => ::std::option::Option::Some(_inner),
396            Self::AttachmentSetIdNotFound(_inner) => ::std::option::Option::Some(_inner),
397            Self::CaseIdNotFound(_inner) => ::std::option::Option::Some(_inner),
398            Self::InternalServerError(_inner) => ::std::option::Option::Some(_inner),
399            Self::Unhandled(_inner) => ::std::option::Option::Some(&*_inner.source),
400        }
401    }
402}
403impl ::std::fmt::Display for AddCommunicationToCaseError {
404    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
405        match self {
406            Self::AttachmentSetExpired(_inner) => _inner.fmt(f),
407            Self::AttachmentSetIdNotFound(_inner) => _inner.fmt(f),
408            Self::CaseIdNotFound(_inner) => _inner.fmt(f),
409            Self::InternalServerError(_inner) => _inner.fmt(f),
410            Self::Unhandled(_inner) => {
411                if let ::std::option::Option::Some(code) = ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self) {
412                    write!(f, "unhandled error ({code})")
413                } else {
414                    f.write_str("unhandled error")
415                }
416            }
417        }
418    }
419}
420impl ::aws_smithy_types::retry::ProvideErrorKind for AddCommunicationToCaseError {
421    fn code(&self) -> ::std::option::Option<&str> {
422        ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self)
423    }
424    fn retryable_error_kind(&self) -> ::std::option::Option<::aws_smithy_types::retry::ErrorKind> {
425        ::std::option::Option::None
426    }
427}
428impl ::aws_smithy_types::error::metadata::ProvideErrorMetadata for AddCommunicationToCaseError {
429    fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
430        match self {
431            Self::AttachmentSetExpired(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
432            Self::AttachmentSetIdNotFound(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
433            Self::CaseIdNotFound(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
434            Self::InternalServerError(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
435            Self::Unhandled(_inner) => &_inner.meta,
436        }
437    }
438}
439impl ::aws_smithy_runtime_api::client::result::CreateUnhandledError for AddCommunicationToCaseError {
440    fn create_unhandled_error(
441        source: ::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>,
442        meta: ::std::option::Option<::aws_smithy_types::error::ErrorMetadata>,
443    ) -> Self {
444        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
445            source,
446            meta: meta.unwrap_or_default(),
447        })
448    }
449}
450impl ::aws_types::request_id::RequestId for crate::operation::add_communication_to_case::AddCommunicationToCaseError {
451    fn request_id(&self) -> Option<&str> {
452        self.meta().request_id()
453    }
454}
455
456pub use crate::operation::add_communication_to_case::_add_communication_to_case_input::AddCommunicationToCaseInput;
457
458pub use crate::operation::add_communication_to_case::_add_communication_to_case_output::AddCommunicationToCaseOutput;
459
460mod _add_communication_to_case_input;
461
462mod _add_communication_to_case_output;
463
464/// Builders
465pub mod builders;
aws_sdk_support/operation/add_communication_to_case.rs

aws_sdk_support/operation/
add_communication_to_case.rs
