aws_sdk_redshift/operation/
authorize_endpoint_access.rs1#[derive(::std::clone::Clone, ::std::default::Default, ::std::fmt::Debug)]
4#[non_exhaustive]
5pub struct AuthorizeEndpointAccess;
6impl AuthorizeEndpointAccess {
7 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::authorize_endpoint_access::AuthorizeEndpointAccessInput,
14 ) -> ::std::result::Result<
15 crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessOutput,
16 ::aws_smithy_runtime_api::client::result::SdkError<
17 crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessError,
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::authorize_endpoint_access::AuthorizeEndpointAccessError>()
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::authorize_endpoint_access::AuthorizeEndpointAccessOutput>()
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::authorize_endpoint_access::AuthorizeEndpointAccessInput,
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("Redshift", "AuthorizeEndpointAccess", input, runtime_plugins, stop_point)
55 .instrument(::tracing::debug_span!(
58 "Redshift.AuthorizeEndpointAccess",
59 "rpc.service" = "Redshift",
60 "rpc.method" = "AuthorizeEndpointAccess",
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 AuthorizeEndpointAccess {
88 fn config(&self) -> ::std::option::Option<::aws_smithy_types::config_bag::FrozenLayer> {
89 let mut cfg = ::aws_smithy_types::config_bag::Layer::new("AuthorizeEndpointAccess");
90
91 cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedRequestSerializer::new(
92 AuthorizeEndpointAccessRequestSerializer,
93 ));
94 cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedResponseDeserializer::new(
95 AuthorizeEndpointAccessResponseDeserializer,
96 ));
97
98 cfg.store_put(::aws_smithy_runtime_api::client::auth::AuthSchemeOptionResolverParams::new(
99 crate::config::auth::Params::builder()
100 .operation_name("AuthorizeEndpointAccess")
101 .build()
102 .expect("required fields set"),
103 ));
104
105 cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::Metadata::new(
106 "AuthorizeEndpointAccess",
107 "Redshift",
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("AuthorizeEndpointAccess")
129 .with_interceptor(::aws_smithy_runtime_api::client::interceptors::SharedInterceptor::permanent(
130 AuthorizeEndpointAccessTelemetryInputCaptureInterceptor,
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 AuthorizeEndpointAccessEndpointParamsInterceptor,
137 ))
138 .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::TransientErrorClassifier::<
139 crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessError,
140 >::new())
141 .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::ModeledAsRetryableClassifier::<
142 crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessError,
143 >::new())
144 .with_retry_classifier(::aws_runtime::retries::classifiers::AwsErrorCodeClassifier::<
145 crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessError,
146 >::new());
147
148 ::std::borrow::Cow::Owned(rcb)
149 }
150}
151
152#[derive(Debug)]
153struct AuthorizeEndpointAccessTelemetryInputCaptureInterceptor;
154
155#[::aws_smithy_runtime_api::client::interceptors::dyn_dispatch_hint]
156impl ::aws_smithy_runtime_api::client::interceptors::Intercept for AuthorizeEndpointAccessTelemetryInputCaptureInterceptor {
157 fn name(&self) -> &'static str {
158 "AuthorizeEndpointAccessTelemetryInputCaptureInterceptor"
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 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::<AuthorizeEndpointAccessInput>() else {
180 return ::std::result::Result::Ok(());
182 };
183
184 let mut captured = ::aws_smithy_types::telemetry::CapturedTelemetryAttributes::default();
185 if requested.should_capture("ClusterIdentifier") {
186 if let ::std::option::Option::Some(value) = input.cluster_identifier.as_deref() {
187 captured.insert("ClusterIdentifier", value);
188 }
189 }
190 if requested.should_capture("Account") {
191 if let ::std::option::Option::Some(value) = input.account.as_deref() {
192 captured.insert("Account", value);
193 }
194 }
195
196 cfg.interceptor_state().store_put(captured);
197 ::std::result::Result::Ok(())
198 }
199}
200#[derive(Debug)]
201struct AuthorizeEndpointAccessResponseDeserializer;
202impl ::aws_smithy_runtime_api::client::ser_de::DeserializeResponse for AuthorizeEndpointAccessResponseDeserializer {
203 fn deserialize_nonstreaming_with_config(
204 &self,
205 response: &::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
206 _cfg: &::aws_smithy_types::config_bag::ConfigBag,
207 ) -> ::aws_smithy_runtime_api::client::interceptors::context::OutputOrError {
208 let (success, status) = (response.status().is_success(), response.status().as_u16());
209 let headers = response.headers();
210 let body = response.body().bytes().expect("body loaded");
211 #[allow(unused_mut)]
212 let mut force_error = false;
213 ::tracing::debug!(request_id = ?::aws_types::request_id::RequestId::request_id(response));
214 let parse_result = if !success && status != 200 || force_error {
215 crate::protocol_serde::shape_authorize_endpoint_access::de_authorize_endpoint_access_http_error(status, headers, body)
216 } else {
217 crate::protocol_serde::shape_authorize_endpoint_access::de_authorize_endpoint_access_http_response(status, headers, body)
218 };
219 crate::protocol_serde::type_erase_result(parse_result)
220 }
221}
222#[derive(Debug)]
223struct AuthorizeEndpointAccessRequestSerializer;
224impl ::aws_smithy_runtime_api::client::ser_de::SerializeRequest for AuthorizeEndpointAccessRequestSerializer {
225 #[allow(unused_mut, clippy::let_and_return, clippy::needless_borrow, clippy::useless_conversion)]
226 fn serialize_input(
227 &self,
228 input: ::aws_smithy_runtime_api::client::interceptors::context::Input,
229 _cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
230 ) -> ::std::result::Result<::aws_smithy_runtime_api::client::orchestrator::HttpRequest, ::aws_smithy_runtime_api::box_error::BoxError> {
231 let input = input
232 .downcast::<crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessInput>()
233 .expect("correct type");
234 let _header_serialization_settings = _cfg
235 .load::<crate::serialization_settings::HeaderSerializationSettings>()
236 .cloned()
237 .unwrap_or_default();
238 let mut request_builder = {
239 #[allow(clippy::uninlined_format_args)]
240 fn uri_base(
241 _input: &crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessInput,
242 output: &mut ::std::string::String,
243 ) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::BuildError> {
244 use ::std::fmt::Write as _;
245 ::std::write!(output, "/").expect("formatting should succeed");
246 ::std::result::Result::Ok(())
247 }
248 #[allow(clippy::unnecessary_wraps)]
249 fn update_http_builder(
250 input: &crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessInput,
251 builder: ::http_1x::request::Builder,
252 ) -> ::std::result::Result<::http_1x::request::Builder, ::aws_smithy_types::error::operation::BuildError> {
253 let mut uri = ::std::string::String::new();
254 uri_base(input, &mut uri)?;
255 ::std::result::Result::Ok(builder.method("POST").uri(uri))
256 }
257 let mut builder = update_http_builder(&input, ::http_1x::request::Builder::new())?;
258 builder =
259 _header_serialization_settings.set_default_header(builder, ::http_1x::header::CONTENT_TYPE, "application/x-www-form-urlencoded");
260 builder
261 };
262 let body = ::aws_smithy_types::body::SdkBody::from(
263 crate::protocol_serde::shape_authorize_endpoint_access_input::ser_authorize_endpoint_access_input_input_input(&input)?,
264 );
265 if let Some(content_length) = body.content_length() {
266 let content_length = content_length.to_string();
267 request_builder = _header_serialization_settings.set_default_header(request_builder, ::http_1x::header::CONTENT_LENGTH, &content_length);
268 }
269 ::std::result::Result::Ok(request_builder.body(body).expect("valid request").try_into().unwrap())
270 }
271}
272#[derive(Debug)]
273struct AuthorizeEndpointAccessEndpointParamsInterceptor;
274
275#[::aws_smithy_runtime_api::client::interceptors::dyn_dispatch_hint]
276impl ::aws_smithy_runtime_api::client::interceptors::Intercept for AuthorizeEndpointAccessEndpointParamsInterceptor {
277 fn name(&self) -> &'static str {
278 "AuthorizeEndpointAccessEndpointParamsInterceptor"
279 }
280
281 fn read_before_execution(
282 &self,
283 context: &::aws_smithy_runtime_api::client::interceptors::context::BeforeSerializationInterceptorContextRef<
284 '_,
285 ::aws_smithy_runtime_api::client::interceptors::context::Input,
286 ::aws_smithy_runtime_api::client::interceptors::context::Output,
287 ::aws_smithy_runtime_api::client::interceptors::context::Error,
288 >,
289 cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
290 ) -> ::std::result::Result<(), ::aws_smithy_runtime_api::box_error::BoxError> {
291 let _input = context
292 .input()
293 .downcast_ref::<AuthorizeEndpointAccessInput>()
294 .ok_or("failed to downcast to AuthorizeEndpointAccessInput")?;
295
296 let params = crate::config::endpoint::Params::builder()
297 .set_region(cfg.load::<::aws_types::region::Region>().map(|r| r.as_ref().to_owned()))
298 .set_use_dual_stack(cfg.load::<::aws_types::endpoint_config::UseDualStack>().map(|ty| ty.0))
299 .set_use_fips(cfg.load::<::aws_types::endpoint_config::UseFips>().map(|ty| ty.0))
300 .set_endpoint(cfg.load::<::aws_types::endpoint_config::EndpointUrl>().map(|ty| ty.0.clone()))
301 .build()
302 .map_err(|err| {
303 ::aws_smithy_runtime_api::client::interceptors::error::ContextAttachedError::new("endpoint params could not be built", err)
304 })?;
305 cfg.interceptor_state()
306 .store_put(::aws_smithy_runtime_api::client::endpoint::EndpointResolverParams::new(params));
307 ::std::result::Result::Ok(())
308 }
309}
310
311#[non_exhaustive]
316#[derive(::std::fmt::Debug)]
317pub enum AuthorizeEndpointAccessError {
318 ClusterNotFoundFault(crate::types::error::ClusterNotFoundFault),
320 EndpointAuthorizationAlreadyExistsFault(crate::types::error::EndpointAuthorizationAlreadyExistsFault),
322 EndpointAuthorizationsPerClusterLimitExceededFault(crate::types::error::EndpointAuthorizationsPerClusterLimitExceededFault),
324 InvalidAuthorizationStateFault(crate::types::error::InvalidAuthorizationStateFault),
326 InvalidClusterStateFault(crate::types::error::InvalidClusterStateFault),
328 UnsupportedOperationFault(crate::types::error::UnsupportedOperationFault),
330 #[deprecated(note = "Matching `Unhandled` directly is not forwards compatible. Instead, match using a \
332 variable wildcard pattern and check `.code()`:
333 \
334 `err if err.code() == Some(\"SpecificExceptionCode\") => { /* handle the error */ }`
335 \
336 See [`ProvideErrorMetadata`](#impl-ProvideErrorMetadata-for-AuthorizeEndpointAccessError) for what information is available for the error.")]
337 Unhandled(crate::error::sealed_unhandled::Unhandled),
338}
339impl AuthorizeEndpointAccessError {
340 pub fn unhandled(
342 err: impl ::std::convert::Into<::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>>,
343 ) -> Self {
344 Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
345 source: err.into(),
346 meta: ::std::default::Default::default(),
347 })
348 }
349
350 pub fn generic(err: ::aws_smithy_types::error::ErrorMetadata) -> Self {
352 Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
353 source: err.clone().into(),
354 meta: err,
355 })
356 }
357 pub fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
362 match self {
363 Self::ClusterNotFoundFault(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
364 Self::EndpointAuthorizationAlreadyExistsFault(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
365 Self::EndpointAuthorizationsPerClusterLimitExceededFault(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
366 Self::InvalidAuthorizationStateFault(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
367 Self::InvalidClusterStateFault(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
368 Self::UnsupportedOperationFault(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
369 Self::Unhandled(e) => &e.meta,
370 }
371 }
372 pub fn is_cluster_not_found_fault(&self) -> bool {
374 matches!(self, Self::ClusterNotFoundFault(_))
375 }
376 pub fn is_endpoint_authorization_already_exists_fault(&self) -> bool {
378 matches!(self, Self::EndpointAuthorizationAlreadyExistsFault(_))
379 }
380 pub fn is_endpoint_authorizations_per_cluster_limit_exceeded_fault(&self) -> bool {
382 matches!(self, Self::EndpointAuthorizationsPerClusterLimitExceededFault(_))
383 }
384 pub fn is_invalid_authorization_state_fault(&self) -> bool {
386 matches!(self, Self::InvalidAuthorizationStateFault(_))
387 }
388 pub fn is_invalid_cluster_state_fault(&self) -> bool {
390 matches!(self, Self::InvalidClusterStateFault(_))
391 }
392 pub fn is_unsupported_operation_fault(&self) -> bool {
394 matches!(self, Self::UnsupportedOperationFault(_))
395 }
396}
397impl ::std::error::Error for AuthorizeEndpointAccessError {
398 fn source(&self) -> ::std::option::Option<&(dyn ::std::error::Error + 'static)> {
399 match self {
400 Self::ClusterNotFoundFault(_inner) => ::std::option::Option::Some(_inner),
401 Self::EndpointAuthorizationAlreadyExistsFault(_inner) => ::std::option::Option::Some(_inner),
402 Self::EndpointAuthorizationsPerClusterLimitExceededFault(_inner) => ::std::option::Option::Some(_inner),
403 Self::InvalidAuthorizationStateFault(_inner) => ::std::option::Option::Some(_inner),
404 Self::InvalidClusterStateFault(_inner) => ::std::option::Option::Some(_inner),
405 Self::UnsupportedOperationFault(_inner) => ::std::option::Option::Some(_inner),
406 Self::Unhandled(_inner) => ::std::option::Option::Some(&*_inner.source),
407 }
408 }
409}
410impl ::std::fmt::Display for AuthorizeEndpointAccessError {
411 fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
412 match self {
413 Self::ClusterNotFoundFault(_inner) => _inner.fmt(f),
414 Self::EndpointAuthorizationAlreadyExistsFault(_inner) => _inner.fmt(f),
415 Self::EndpointAuthorizationsPerClusterLimitExceededFault(_inner) => _inner.fmt(f),
416 Self::InvalidAuthorizationStateFault(_inner) => _inner.fmt(f),
417 Self::InvalidClusterStateFault(_inner) => _inner.fmt(f),
418 Self::UnsupportedOperationFault(_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 AuthorizeEndpointAccessError {
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 AuthorizeEndpointAccessError {
438 fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
439 match self {
440 Self::ClusterNotFoundFault(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
441 Self::EndpointAuthorizationAlreadyExistsFault(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
442 Self::EndpointAuthorizationsPerClusterLimitExceededFault(_inner) => {
443 ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner)
444 }
445 Self::InvalidAuthorizationStateFault(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
446 Self::InvalidClusterStateFault(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
447 Self::UnsupportedOperationFault(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
448 Self::Unhandled(_inner) => &_inner.meta,
449 }
450 }
451}
452impl ::aws_smithy_runtime_api::client::result::CreateUnhandledError for AuthorizeEndpointAccessError {
453 fn create_unhandled_error(
454 source: ::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>,
455 meta: ::std::option::Option<::aws_smithy_types::error::ErrorMetadata>,
456 ) -> Self {
457 Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
458 source,
459 meta: meta.unwrap_or_default(),
460 })
461 }
462}
463impl ::aws_types::request_id::RequestId for crate::operation::authorize_endpoint_access::AuthorizeEndpointAccessError {
464 fn request_id(&self) -> Option<&str> {
465 self.meta().request_id()
466 }
467}
468
469pub use crate::operation::authorize_endpoint_access::_authorize_endpoint_access_input::AuthorizeEndpointAccessInput;
470
471pub use crate::operation::authorize_endpoint_access::_authorize_endpoint_access_output::AuthorizeEndpointAccessOutput;
472
473mod _authorize_endpoint_access_input;
474
475mod _authorize_endpoint_access_output;
476
477pub mod builders;