aws_sdk_cloudfront/operation/
list_distributions_by_connection_mode.rs

1// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
2/// Orchestration and serialization glue logic for `ListDistributionsByConnectionMode`.
3#[derive(::std::clone::Clone, ::std::default::Default, ::std::fmt::Debug)]
4#[non_exhaustive]
5pub struct ListDistributionsByConnectionMode;
6impl ListDistributionsByConnectionMode {
7    /// Creates a new `ListDistributionsByConnectionMode`
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::list_distributions_by_connection_mode::ListDistributionsByConnectionModeInput,
14    ) -> ::std::result::Result<
15        crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeOutput,
16        ::aws_smithy_runtime_api::client::result::SdkError<
17            crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeError,
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::list_distributions_by_connection_mode::ListDistributionsByConnectionModeError>()
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::list_distributions_by_connection_mode::ListDistributionsByConnectionModeOutput>()
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::list_distributions_by_connection_mode::ListDistributionsByConnectionModeInput,
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(
55            "CloudFront",
56            "ListDistributionsByConnectionMode",
57            input,
58            runtime_plugins,
59            stop_point,
60        )
61        // Create a parent span for the entire operation. Includes a random, internal-only,
62        // seven-digit ID for the operation orchestration so that it can be correlated in the logs.
63        .instrument(::tracing::debug_span!(
64            "CloudFront.ListDistributionsByConnectionMode",
65            "rpc.service" = "CloudFront",
66            "rpc.method" = "ListDistributionsByConnectionMode",
67            "sdk_invocation_id" = ::fastrand::u32(1_000_000..10_000_000),
68            "rpc.system" = "aws-api",
69        ))
70        .await
71    }
72
73    pub(crate) fn operation_runtime_plugins(
74        client_runtime_plugins: ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins,
75        client_config: &crate::config::Config,
76        config_override: ::std::option::Option<crate::config::Builder>,
77    ) -> ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugins {
78        let mut runtime_plugins = client_runtime_plugins.with_operation_plugin(Self::new());
79
80        if let ::std::option::Option::Some(config_override) = config_override {
81            for plugin in config_override.runtime_plugins.iter().cloned() {
82                runtime_plugins = runtime_plugins.with_operation_plugin(plugin);
83            }
84            runtime_plugins = runtime_plugins.with_operation_plugin(crate::config::ConfigOverrideRuntimePlugin::new(
85                config_override,
86                client_config.config.clone(),
87                &client_config.runtime_components,
88            ));
89        }
90        runtime_plugins
91    }
92}
93impl ::aws_smithy_runtime_api::client::runtime_plugin::RuntimePlugin for ListDistributionsByConnectionMode {
94    fn config(&self) -> ::std::option::Option<::aws_smithy_types::config_bag::FrozenLayer> {
95        let mut cfg = ::aws_smithy_types::config_bag::Layer::new("ListDistributionsByConnectionMode");
96
97        cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedRequestSerializer::new(
98            ListDistributionsByConnectionModeRequestSerializer,
99        ));
100        cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedResponseDeserializer::new(
101            ListDistributionsByConnectionModeResponseDeserializer,
102        ));
103
104        cfg.store_put(::aws_smithy_runtime_api::client::auth::AuthSchemeOptionResolverParams::new(
105            crate::config::auth::Params::builder()
106                .operation_name("ListDistributionsByConnectionMode")
107                .build()
108                .expect("required fields set"),
109        ));
110
111        cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::SensitiveOutput);
112        cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::Metadata::new(
113            "ListDistributionsByConnectionMode",
114            "CloudFront",
115        ));
116        let mut signing_options = ::aws_runtime::auth::SigningOptions::default();
117        signing_options.double_uri_encode = true;
118        signing_options.content_sha256_header = false;
119        signing_options.normalize_uri_path = true;
120        signing_options.payload_override = None;
121
122        cfg.store_put(::aws_runtime::auth::SigV4OperationSigningConfig {
123            signing_options,
124            ..::std::default::Default::default()
125        });
126
127        ::std::option::Option::Some(cfg.freeze())
128    }
129
130    fn runtime_components(
131        &self,
132        _: &::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder,
133    ) -> ::std::borrow::Cow<'_, ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder> {
134        #[allow(unused_mut)]
135        let mut rcb = ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder::new("ListDistributionsByConnectionMode")
136            .with_interceptor(::aws_smithy_runtime_api::client::interceptors::SharedInterceptor::permanent(
137                ListDistributionsByConnectionModeTelemetryInputCaptureInterceptor,
138            ))
139            .with_interceptor(::aws_smithy_runtime_api::client::interceptors::SharedInterceptor::permanent(
140                ::aws_smithy_runtime::client::stalled_stream_protection::StalledStreamProtectionInterceptor::default(),
141            ))
142            .with_interceptor(::aws_smithy_runtime_api::client::interceptors::SharedInterceptor::permanent(
143                ListDistributionsByConnectionModeEndpointParamsInterceptor,
144            ))
145            .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::TransientErrorClassifier::<
146                crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeError,
147            >::new())
148            .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::ModeledAsRetryableClassifier::<
149                crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeError,
150            >::new())
151            .with_retry_classifier(::aws_runtime::retries::classifiers::AwsErrorCodeClassifier::<
152                crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeError,
153            >::new())
154            .with_retry_classifier(::aws_runtime::service_clock_skew::ServiceClockSkewClassifier::<
155                crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeError,
156            >::new());
157
158        ::std::borrow::Cow::Owned(rcb)
159    }
160}
161
162#[derive(Debug)]
163struct ListDistributionsByConnectionModeTelemetryInputCaptureInterceptor;
164
165#[::aws_smithy_runtime_api::client::interceptors::dyn_dispatch_hint]
166impl ::aws_smithy_runtime_api::client::interceptors::Intercept for ListDistributionsByConnectionModeTelemetryInputCaptureInterceptor {
167    fn name(&self) -> &'static str {
168        "ListDistributionsByConnectionModeTelemetryInputCaptureInterceptor"
169    }
170
171    fn read_before_execution(
172        &self,
173        context: &::aws_smithy_runtime_api::client::interceptors::context::BeforeSerializationInterceptorContextRef<
174            '_,
175            ::aws_smithy_runtime_api::client::interceptors::context::Input,
176            ::aws_smithy_runtime_api::client::interceptors::context::Output,
177            ::aws_smithy_runtime_api::client::interceptors::context::Error,
178        >,
179        cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
180    ) -> ::std::result::Result<(), ::aws_smithy_runtime_api::box_error::BoxError> {
181        // Nothing to do unless the customer opted in by naming members to record.
182        let ::std::option::Option::Some(requested) = cfg
183            .load::<::aws_smithy_types::telemetry::RequestedTelemetryAttributes>()
184            .filter(|r| !r.is_empty())
185        else {
186            return ::std::result::Result::Ok(());
187        };
188
189        let ::std::option::Option::Some(input) = context.input().downcast_ref::<ListDistributionsByConnectionModeInput>() else {
190            // A mismatched input is not this interceptor's concern; skip quietly.
191            return ::std::result::Result::Ok(());
192        };
193
194        let mut captured = ::aws_smithy_types::telemetry::CapturedTelemetryAttributes::default();
195        if requested.should_capture("Marker") {
196            if let ::std::option::Option::Some(value) = input.marker.as_deref() {
197                captured.insert("Marker", value);
198            }
199        }
200
201        cfg.interceptor_state().store_put(captured);
202        ::std::result::Result::Ok(())
203    }
204}
205#[derive(Debug)]
206struct ListDistributionsByConnectionModeResponseDeserializer;
207impl ::aws_smithy_runtime_api::client::ser_de::DeserializeResponse for ListDistributionsByConnectionModeResponseDeserializer {
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_list_distributions_by_connection_mode::de_list_distributions_by_connection_mode_http_error(
221                status, headers, body,
222            )
223        } else {
224            crate::protocol_serde::shape_list_distributions_by_connection_mode::de_list_distributions_by_connection_mode_http_response(
225                status, headers, body,
226            )
227        };
228        crate::protocol_serde::type_erase_result(parse_result)
229    }
230}
231#[derive(Debug)]
232struct ListDistributionsByConnectionModeRequestSerializer;
233impl ::aws_smithy_runtime_api::client::ser_de::SerializeRequest for ListDistributionsByConnectionModeRequestSerializer {
234    #[allow(unused_mut, clippy::let_and_return, clippy::needless_borrow, clippy::useless_conversion)]
235    fn serialize_input(
236        &self,
237        input: ::aws_smithy_runtime_api::client::interceptors::context::Input,
238        _cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
239    ) -> ::std::result::Result<::aws_smithy_runtime_api::client::orchestrator::HttpRequest, ::aws_smithy_runtime_api::box_error::BoxError> {
240        let input = input
241            .downcast::<crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeInput>()
242            .expect("correct type");
243        let _header_serialization_settings = _cfg
244            .load::<crate::serialization_settings::HeaderSerializationSettings>()
245            .cloned()
246            .unwrap_or_default();
247        let mut request_builder = {
248            #[allow(clippy::uninlined_format_args)]
249            fn uri_base(
250                _input: &crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeInput,
251                output: &mut ::std::string::String,
252            ) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::BuildError> {
253                use ::std::fmt::Write as _;
254                let input_1 = &_input.connection_mode;
255                let input_1 = input_1
256                    .as_ref()
257                    .ok_or_else(|| ::aws_smithy_types::error::operation::BuildError::missing_field("connection_mode", "cannot be empty or unset"))?;
258                let connection_mode = ::aws_smithy_http::label::fmt_string(input_1.as_str(), ::aws_smithy_http::label::EncodingStrategy::Default);
259                if connection_mode.is_empty() {
260                    return ::std::result::Result::Err(::aws_smithy_types::error::operation::BuildError::missing_field(
261                        "connection_mode",
262                        "cannot be empty or unset",
263                    ));
264                }
265                ::std::write!(
266                    output,
267                    "/2020-05-31/distributionsByConnectionMode/{ConnectionMode}",
268                    ConnectionMode = connection_mode
269                )
270                .expect("formatting should succeed");
271                ::std::result::Result::Ok(())
272            }
273            fn uri_query(
274                _input: &crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeInput,
275                mut output: &mut ::std::string::String,
276            ) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::BuildError> {
277                let mut query = ::aws_smithy_http::query::Writer::new(output);
278                if let ::std::option::Option::Some(inner_2) = &_input.marker {
279                    {
280                        query.push_kv("Marker", &::aws_smithy_http::query::fmt_string(inner_2));
281                    }
282                }
283                if let ::std::option::Option::Some(inner_3) = &_input.max_items {
284                    {
285                        query.push_kv("MaxItems", ::aws_smithy_types::primitive::Encoder::from(*inner_3).encode());
286                    }
287                }
288                ::std::result::Result::Ok(())
289            }
290            #[allow(clippy::unnecessary_wraps)]
291            fn update_http_builder(
292                input: &crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeInput,
293                builder: ::http_1x::request::Builder,
294            ) -> ::std::result::Result<::http_1x::request::Builder, ::aws_smithy_types::error::operation::BuildError> {
295                let mut uri = ::std::string::String::new();
296                uri_base(input, &mut uri)?;
297                uri_query(input, &mut uri)?;
298                ::std::result::Result::Ok(builder.method("GET").uri(uri))
299            }
300            let mut builder = update_http_builder(&input, ::http_1x::request::Builder::new())?;
301            builder
302        };
303        let body = ::aws_smithy_types::body::SdkBody::from("");
304
305        ::std::result::Result::Ok(request_builder.body(body).expect("valid request").try_into().unwrap())
306    }
307}
308#[derive(Debug)]
309struct ListDistributionsByConnectionModeEndpointParamsInterceptor;
310
311#[::aws_smithy_runtime_api::client::interceptors::dyn_dispatch_hint]
312impl ::aws_smithy_runtime_api::client::interceptors::Intercept for ListDistributionsByConnectionModeEndpointParamsInterceptor {
313    fn name(&self) -> &'static str {
314        "ListDistributionsByConnectionModeEndpointParamsInterceptor"
315    }
316
317    fn read_before_execution(
318        &self,
319        context: &::aws_smithy_runtime_api::client::interceptors::context::BeforeSerializationInterceptorContextRef<
320            '_,
321            ::aws_smithy_runtime_api::client::interceptors::context::Input,
322            ::aws_smithy_runtime_api::client::interceptors::context::Output,
323            ::aws_smithy_runtime_api::client::interceptors::context::Error,
324        >,
325        cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
326    ) -> ::std::result::Result<(), ::aws_smithy_runtime_api::box_error::BoxError> {
327        let _input = context
328            .input()
329            .downcast_ref::<ListDistributionsByConnectionModeInput>()
330            .ok_or("failed to downcast to ListDistributionsByConnectionModeInput")?;
331
332        let params = crate::config::endpoint::Params::builder()
333            .set_use_dual_stack(cfg.load::<::aws_types::endpoint_config::UseDualStack>().map(|ty| ty.0))
334            .set_use_fips(cfg.load::<::aws_types::endpoint_config::UseFips>().map(|ty| ty.0))
335            .set_endpoint(cfg.load::<::aws_types::endpoint_config::EndpointUrl>().map(|ty| ty.0.clone()))
336            .set_region(cfg.load::<::aws_types::region::Region>().map(|r| r.as_ref().to_owned()))
337            .build()
338            .map_err(|err| {
339                ::aws_smithy_runtime_api::client::interceptors::error::ContextAttachedError::new("endpoint params could not be built", err)
340            })?;
341        cfg.interceptor_state()
342            .store_put(::aws_smithy_runtime_api::client::endpoint::EndpointResolverParams::new(params));
343        ::std::result::Result::Ok(())
344    }
345}
346
347// The get_* functions below are generated from JMESPath expressions in the
348// operationContextParams trait. They target the operation's input shape.
349
350/// Error type for the `ListDistributionsByConnectionModeError` operation.
351#[non_exhaustive]
352#[derive(::std::fmt::Debug)]
353pub enum ListDistributionsByConnectionModeError {
354    /// <p>Access denied.</p>
355    AccessDenied(crate::types::error::AccessDenied),
356    /// <p>An argument is invalid.</p>
357    InvalidArgument(crate::types::error::InvalidArgument),
358    /// An unexpected error occurred (e.g., invalid JSON returned by the service or an unknown error code).
359    #[deprecated(note = "Matching `Unhandled` directly is not forwards compatible. Instead, match using a \
360    variable wildcard pattern and check `.code()`:
361     \
362    &nbsp;&nbsp;&nbsp;`err if err.code() == Some(\"SpecificExceptionCode\") => { /* handle the error */ }`
363     \
364    See [`ProvideErrorMetadata`](#impl-ProvideErrorMetadata-for-ListDistributionsByConnectionModeError) for what information is available for the error.")]
365    Unhandled(crate::error::sealed_unhandled::Unhandled),
366}
367impl ListDistributionsByConnectionModeError {
368    /// Creates the `ListDistributionsByConnectionModeError::Unhandled` variant from any error type.
369    pub fn unhandled(
370        err: impl ::std::convert::Into<::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>>,
371    ) -> Self {
372        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
373            source: err.into(),
374            meta: ::std::default::Default::default(),
375        })
376    }
377
378    /// Creates the `ListDistributionsByConnectionModeError::Unhandled` variant from an [`ErrorMetadata`](::aws_smithy_types::error::ErrorMetadata).
379    pub fn generic(err: ::aws_smithy_types::error::ErrorMetadata) -> Self {
380        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
381            source: err.clone().into(),
382            meta: err,
383        })
384    }
385    ///
386    /// Returns error metadata, which includes the error code, message,
387    /// request ID, and potentially additional information.
388    ///
389    pub fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
390        match self {
391            Self::AccessDenied(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
392            Self::InvalidArgument(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
393            Self::Unhandled(e) => &e.meta,
394        }
395    }
396    /// Returns `true` if the error kind is `ListDistributionsByConnectionModeError::AccessDenied`.
397    pub fn is_access_denied(&self) -> bool {
398        matches!(self, Self::AccessDenied(_))
399    }
400    /// Returns `true` if the error kind is `ListDistributionsByConnectionModeError::InvalidArgument`.
401    pub fn is_invalid_argument(&self) -> bool {
402        matches!(self, Self::InvalidArgument(_))
403    }
404}
405impl ::std::error::Error for ListDistributionsByConnectionModeError {
406    fn source(&self) -> ::std::option::Option<&(dyn ::std::error::Error + 'static)> {
407        match self {
408            Self::AccessDenied(_inner) => ::std::option::Option::Some(_inner),
409            Self::InvalidArgument(_inner) => ::std::option::Option::Some(_inner),
410            Self::Unhandled(_inner) => ::std::option::Option::Some(&*_inner.source),
411        }
412    }
413}
414impl ::std::fmt::Display for ListDistributionsByConnectionModeError {
415    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
416        match self {
417            Self::AccessDenied(_inner) => _inner.fmt(f),
418            Self::InvalidArgument(_inner) => _inner.fmt(f),
419            Self::Unhandled(_inner) => {
420                if let ::std::option::Option::Some(code) = ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self) {
421                    write!(f, "unhandled error ({code})")
422                } else {
423                    f.write_str("unhandled error")
424                }
425            }
426        }
427    }
428}
429impl ::aws_smithy_types::retry::ProvideErrorKind for ListDistributionsByConnectionModeError {
430    fn code(&self) -> ::std::option::Option<&str> {
431        ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self)
432    }
433    fn retryable_error_kind(&self) -> ::std::option::Option<::aws_smithy_types::retry::ErrorKind> {
434        ::std::option::Option::None
435    }
436}
437impl ::aws_smithy_types::error::metadata::ProvideErrorMetadata for ListDistributionsByConnectionModeError {
438    fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
439        match self {
440            Self::AccessDenied(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
441            Self::InvalidArgument(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
442            Self::Unhandled(_inner) => &_inner.meta,
443        }
444    }
445}
446impl ::aws_smithy_runtime_api::client::result::CreateUnhandledError for ListDistributionsByConnectionModeError {
447    fn create_unhandled_error(
448        source: ::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>,
449        meta: ::std::option::Option<::aws_smithy_types::error::ErrorMetadata>,
450    ) -> Self {
451        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
452            source,
453            meta: meta.unwrap_or_default(),
454        })
455    }
456}
457impl ::aws_types::request_id::RequestId for crate::operation::list_distributions_by_connection_mode::ListDistributionsByConnectionModeError {
458    fn request_id(&self) -> Option<&str> {
459        self.meta().request_id()
460    }
461}
462
463pub use crate::operation::list_distributions_by_connection_mode::_list_distributions_by_connection_mode_input::ListDistributionsByConnectionModeInput;
464
465pub use crate::operation::list_distributions_by_connection_mode::_list_distributions_by_connection_mode_output::ListDistributionsByConnectionModeOutput;
466
467mod _list_distributions_by_connection_mode_input;
468
469mod _list_distributions_by_connection_mode_output;
470
471/// Builders
472pub mod builders;
473
474/// Paginator for this operation
475pub mod paginator;
aws_sdk_cloudfront/operation/list_distributions_by_connection_mode.rs

aws_sdk_cloudfront/operation/
list_distributions_by_connection_mode.rs
