aws_sdk_deadline/operation/
list_tasks.rs

1// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
2/// Orchestration and serialization glue logic for `ListTasks`.
3#[derive(::std::clone::Clone, ::std::default::Default, ::std::fmt::Debug)]
4#[non_exhaustive]
5pub struct ListTasks;
6impl ListTasks {
7    /// Creates a new `ListTasks`
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_tasks::ListTasksInput,
14    ) -> ::std::result::Result<
15        crate::operation::list_tasks::ListTasksOutput,
16        ::aws_smithy_runtime_api::client::result::SdkError<
17            crate::operation::list_tasks::ListTasksError,
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_tasks::ListTasksError>()
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_tasks::ListTasksOutput>()
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_tasks::ListTasksInput,
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("deadline", "ListTasks", 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                "deadline.ListTasks",
59                "rpc.service" = "deadline",
60                "rpc.method" = "ListTasks",
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 ListTasks {
88    fn config(&self) -> ::std::option::Option<::aws_smithy_types::config_bag::FrozenLayer> {
89        let mut cfg = ::aws_smithy_types::config_bag::Layer::new("ListTasks");
90
91        cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedRequestSerializer::new(
92            ListTasksRequestSerializer,
93        ));
94        cfg.store_put(::aws_smithy_runtime_api::client::ser_de::SharedResponseDeserializer::new(
95            ListTasksResponseDeserializer,
96        ));
97
98        cfg.store_put(::aws_smithy_runtime_api::client::auth::AuthSchemeOptionResolverParams::new(
99            crate::config::auth::Params::builder()
100                .operation_name("ListTasks")
101                .build()
102                .expect("required fields set"),
103        ));
104
105        cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::SensitiveOutput);
106        cfg.store_put(::aws_smithy_runtime_api::client::orchestrator::Metadata::new("ListTasks", "deadline"));
107        let mut signing_options = ::aws_runtime::auth::SigningOptions::default();
108        signing_options.double_uri_encode = true;
109        signing_options.content_sha256_header = false;
110        signing_options.normalize_uri_path = true;
111        signing_options.payload_override = None;
112
113        cfg.store_put(::aws_runtime::auth::SigV4OperationSigningConfig {
114            signing_options,
115            ..::std::default::Default::default()
116        });
117
118        ::std::option::Option::Some(cfg.freeze())
119    }
120
121    fn runtime_components(
122        &self,
123        _: &::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder,
124    ) -> ::std::borrow::Cow<'_, ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder> {
125        #[allow(unused_mut)]
126        let mut rcb = ::aws_smithy_runtime_api::client::runtime_components::RuntimeComponentsBuilder::new("ListTasks")
127            .with_interceptor(::aws_smithy_runtime::client::stalled_stream_protection::StalledStreamProtectionInterceptor::default())
128            .with_interceptor(ListTasksEndpointParamsInterceptor)
129            .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::TransientErrorClassifier::<
130                crate::operation::list_tasks::ListTasksError,
131            >::new())
132            .with_retry_classifier(::aws_smithy_runtime::client::retries::classifiers::ModeledAsRetryableClassifier::<
133                crate::operation::list_tasks::ListTasksError,
134            >::new())
135            .with_retry_classifier(::aws_runtime::retries::classifiers::AwsErrorCodeClassifier::<
136                crate::operation::list_tasks::ListTasksError,
137            >::new());
138
139        ::std::borrow::Cow::Owned(rcb)
140    }
141}
142
143#[derive(Debug)]
144struct ListTasksResponseDeserializer;
145impl ::aws_smithy_runtime_api::client::ser_de::DeserializeResponse for ListTasksResponseDeserializer {
146    fn deserialize_nonstreaming(
147        &self,
148        response: &::aws_smithy_runtime_api::client::orchestrator::HttpResponse,
149    ) -> ::aws_smithy_runtime_api::client::interceptors::context::OutputOrError {
150        let (success, status) = (response.status().is_success(), response.status().as_u16());
151        let headers = response.headers();
152        let body = response.body().bytes().expect("body loaded");
153        #[allow(unused_mut)]
154        let mut force_error = false;
155        ::tracing::debug!(request_id = ?::aws_types::request_id::RequestId::request_id(response));
156        let parse_result = if !success && status != 200 || force_error {
157            crate::protocol_serde::shape_list_tasks::de_list_tasks_http_error(status, headers, body)
158        } else {
159            crate::protocol_serde::shape_list_tasks::de_list_tasks_http_response(status, headers, body)
160        };
161        crate::protocol_serde::type_erase_result(parse_result)
162    }
163}
164#[derive(Debug)]
165struct ListTasksRequestSerializer;
166impl ::aws_smithy_runtime_api::client::ser_de::SerializeRequest for ListTasksRequestSerializer {
167    #[allow(unused_mut, clippy::let_and_return, clippy::needless_borrow, clippy::useless_conversion)]
168    fn serialize_input(
169        &self,
170        input: ::aws_smithy_runtime_api::client::interceptors::context::Input,
171        _cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
172    ) -> ::std::result::Result<::aws_smithy_runtime_api::client::orchestrator::HttpRequest, ::aws_smithy_runtime_api::box_error::BoxError> {
173        let input = input.downcast::<crate::operation::list_tasks::ListTasksInput>().expect("correct type");
174        let _header_serialization_settings = _cfg
175            .load::<crate::serialization_settings::HeaderSerializationSettings>()
176            .cloned()
177            .unwrap_or_default();
178        let mut request_builder = {
179            fn uri_base(
180                _input: &crate::operation::list_tasks::ListTasksInput,
181                output: &mut ::std::string::String,
182            ) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::BuildError> {
183                use ::std::fmt::Write as _;
184                let input_1 = &_input.farm_id;
185                let input_1 = input_1
186                    .as_ref()
187                    .ok_or_else(|| ::aws_smithy_types::error::operation::BuildError::missing_field("farm_id", "cannot be empty or unset"))?;
188                let farm_id = ::aws_smithy_http::label::fmt_string(input_1, ::aws_smithy_http::label::EncodingStrategy::Default);
189                if farm_id.is_empty() {
190                    return ::std::result::Result::Err(::aws_smithy_types::error::operation::BuildError::missing_field(
191                        "farm_id",
192                        "cannot be empty or unset",
193                    ));
194                }
195                let input_2 = &_input.queue_id;
196                let input_2 = input_2
197                    .as_ref()
198                    .ok_or_else(|| ::aws_smithy_types::error::operation::BuildError::missing_field("queue_id", "cannot be empty or unset"))?;
199                let queue_id = ::aws_smithy_http::label::fmt_string(input_2, ::aws_smithy_http::label::EncodingStrategy::Default);
200                if queue_id.is_empty() {
201                    return ::std::result::Result::Err(::aws_smithy_types::error::operation::BuildError::missing_field(
202                        "queue_id",
203                        "cannot be empty or unset",
204                    ));
205                }
206                let input_3 = &_input.job_id;
207                let input_3 = input_3
208                    .as_ref()
209                    .ok_or_else(|| ::aws_smithy_types::error::operation::BuildError::missing_field("job_id", "cannot be empty or unset"))?;
210                let job_id = ::aws_smithy_http::label::fmt_string(input_3, ::aws_smithy_http::label::EncodingStrategy::Default);
211                if job_id.is_empty() {
212                    return ::std::result::Result::Err(::aws_smithy_types::error::operation::BuildError::missing_field(
213                        "job_id",
214                        "cannot be empty or unset",
215                    ));
216                }
217                let input_4 = &_input.step_id;
218                let input_4 = input_4
219                    .as_ref()
220                    .ok_or_else(|| ::aws_smithy_types::error::operation::BuildError::missing_field("step_id", "cannot be empty or unset"))?;
221                let step_id = ::aws_smithy_http::label::fmt_string(input_4, ::aws_smithy_http::label::EncodingStrategy::Default);
222                if step_id.is_empty() {
223                    return ::std::result::Result::Err(::aws_smithy_types::error::operation::BuildError::missing_field(
224                        "step_id",
225                        "cannot be empty or unset",
226                    ));
227                }
228                ::std::write!(
229                    output,
230                    "/2023-10-12/farms/{farmId}/queues/{queueId}/jobs/{jobId}/steps/{stepId}/tasks",
231                    farmId = farm_id,
232                    queueId = queue_id,
233                    jobId = job_id,
234                    stepId = step_id
235                )
236                .expect("formatting should succeed");
237                ::std::result::Result::Ok(())
238            }
239            fn uri_query(
240                _input: &crate::operation::list_tasks::ListTasksInput,
241                mut output: &mut ::std::string::String,
242            ) -> ::std::result::Result<(), ::aws_smithy_types::error::operation::BuildError> {
243                let mut query = ::aws_smithy_http::query::Writer::new(output);
244                if let ::std::option::Option::Some(inner_5) = &_input.next_token {
245                    {
246                        query.push_kv("nextToken", &::aws_smithy_http::query::fmt_string(inner_5));
247                    }
248                }
249                if let ::std::option::Option::Some(inner_6) = &_input.max_results {
250                    {
251                        query.push_kv("maxResults", ::aws_smithy_types::primitive::Encoder::from(*inner_6).encode());
252                    }
253                }
254                ::std::result::Result::Ok(())
255            }
256            #[allow(clippy::unnecessary_wraps)]
257            fn update_http_builder(
258                input: &crate::operation::list_tasks::ListTasksInput,
259                builder: ::http::request::Builder,
260            ) -> ::std::result::Result<::http::request::Builder, ::aws_smithy_types::error::operation::BuildError> {
261                let mut uri = ::std::string::String::new();
262                uri_base(input, &mut uri)?;
263                uri_query(input, &mut uri)?;
264                ::std::result::Result::Ok(builder.method("GET").uri(uri))
265            }
266            let mut builder = update_http_builder(&input, ::http::request::Builder::new())?;
267            builder
268        };
269        let body = ::aws_smithy_types::body::SdkBody::from("");
270
271        ::std::result::Result::Ok(request_builder.body(body).expect("valid request").try_into().unwrap())
272    }
273}
274#[derive(Debug)]
275struct ListTasksEndpointParamsInterceptor;
276
277impl ::aws_smithy_runtime_api::client::interceptors::Intercept for ListTasksEndpointParamsInterceptor {
278    fn name(&self) -> &'static str {
279        "ListTasksEndpointParamsInterceptor"
280    }
281
282    fn read_before_execution(
283        &self,
284        context: &::aws_smithy_runtime_api::client::interceptors::context::BeforeSerializationInterceptorContextRef<
285            '_,
286            ::aws_smithy_runtime_api::client::interceptors::context::Input,
287            ::aws_smithy_runtime_api::client::interceptors::context::Output,
288            ::aws_smithy_runtime_api::client::interceptors::context::Error,
289        >,
290        cfg: &mut ::aws_smithy_types::config_bag::ConfigBag,
291    ) -> ::std::result::Result<(), ::aws_smithy_runtime_api::box_error::BoxError> {
292        let _input = context
293            .input()
294            .downcast_ref::<ListTasksInput>()
295            .ok_or("failed to downcast to ListTasksInput")?;
296
297        let endpoint_prefix = ::aws_smithy_runtime_api::client::endpoint::EndpointPrefix::new("management.").map_err(|err| {
298            ::aws_smithy_runtime_api::client::interceptors::error::ContextAttachedError::new("endpoint prefix could not be built", err)
299        })?;
300        cfg.interceptor_state().store_put(endpoint_prefix);
301
302        let params = crate::config::endpoint::Params::builder()
303            .set_region(cfg.load::<::aws_types::region::Region>().map(|r| r.as_ref().to_owned()))
304            .set_use_dual_stack(cfg.load::<::aws_types::endpoint_config::UseDualStack>().map(|ty| ty.0))
305            .set_use_fips(cfg.load::<::aws_types::endpoint_config::UseFips>().map(|ty| ty.0))
306            .set_endpoint(cfg.load::<::aws_types::endpoint_config::EndpointUrl>().map(|ty| ty.0.clone()))
307            .build()
308            .map_err(|err| {
309                ::aws_smithy_runtime_api::client::interceptors::error::ContextAttachedError::new("endpoint params could not be built", err)
310            })?;
311        cfg.interceptor_state()
312            .store_put(::aws_smithy_runtime_api::client::endpoint::EndpointResolverParams::new(params));
313        ::std::result::Result::Ok(())
314    }
315}
316
317// The get_* functions below are generated from JMESPath expressions in the
318// operationContextParams trait. They target the operation's input shape.
319
320/// Error type for the `ListTasksError` operation.
321#[non_exhaustive]
322#[derive(::std::fmt::Debug)]
323pub enum ListTasksError {
324    /// <p>You don't have permission to perform the action.</p>
325    AccessDeniedException(crate::types::error::AccessDeniedException),
326    /// <p>Deadline Cloud can't process your request right now. Try again later.</p>
327    InternalServerErrorException(crate::types::error::InternalServerErrorException),
328    /// <p>The requested resource can't be found.</p>
329    ResourceNotFoundException(crate::types::error::ResourceNotFoundException),
330    /// <p>Your request exceeded a request rate quota.</p>
331    ThrottlingException(crate::types::error::ThrottlingException),
332    /// <p>The request isn't valid. This can occur if your request contains malformed JSON or unsupported characters.</p>
333    ValidationException(crate::types::error::ValidationException),
334    /// An unexpected error occurred (e.g., invalid JSON returned by the service or an unknown error code).
335    #[deprecated(note = "Matching `Unhandled` directly is not forwards compatible. Instead, match using a \
336    variable wildcard pattern and check `.code()`:
337     \
338    &nbsp;&nbsp;&nbsp;`err if err.code() == Some(\"SpecificExceptionCode\") => { /* handle the error */ }`
339     \
340    See [`ProvideErrorMetadata`](#impl-ProvideErrorMetadata-for-ListTasksError) for what information is available for the error.")]
341    Unhandled(crate::error::sealed_unhandled::Unhandled),
342}
343impl ListTasksError {
344    /// Creates the `ListTasksError::Unhandled` variant from any error type.
345    pub fn unhandled(
346        err: impl ::std::convert::Into<::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>>,
347    ) -> Self {
348        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
349            source: err.into(),
350            meta: ::std::default::Default::default(),
351        })
352    }
353
354    /// Creates the `ListTasksError::Unhandled` variant from an [`ErrorMetadata`](::aws_smithy_types::error::ErrorMetadata).
355    pub fn generic(err: ::aws_smithy_types::error::ErrorMetadata) -> Self {
356        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
357            source: err.clone().into(),
358            meta: err,
359        })
360    }
361    ///
362    /// Returns error metadata, which includes the error code, message,
363    /// request ID, and potentially additional information.
364    ///
365    pub fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
366        match self {
367            Self::AccessDeniedException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
368            Self::InternalServerErrorException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
369            Self::ResourceNotFoundException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
370            Self::ThrottlingException(e) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(e),
371            Self::ValidationException(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 `ListTasksError::AccessDeniedException`.
376    pub fn is_access_denied_exception(&self) -> bool {
377        matches!(self, Self::AccessDeniedException(_))
378    }
379    /// Returns `true` if the error kind is `ListTasksError::InternalServerErrorException`.
380    pub fn is_internal_server_error_exception(&self) -> bool {
381        matches!(self, Self::InternalServerErrorException(_))
382    }
383    /// Returns `true` if the error kind is `ListTasksError::ResourceNotFoundException`.
384    pub fn is_resource_not_found_exception(&self) -> bool {
385        matches!(self, Self::ResourceNotFoundException(_))
386    }
387    /// Returns `true` if the error kind is `ListTasksError::ThrottlingException`.
388    pub fn is_throttling_exception(&self) -> bool {
389        matches!(self, Self::ThrottlingException(_))
390    }
391    /// Returns `true` if the error kind is `ListTasksError::ValidationException`.
392    pub fn is_validation_exception(&self) -> bool {
393        matches!(self, Self::ValidationException(_))
394    }
395}
396impl ::std::error::Error for ListTasksError {
397    fn source(&self) -> ::std::option::Option<&(dyn ::std::error::Error + 'static)> {
398        match self {
399            Self::AccessDeniedException(_inner) => ::std::option::Option::Some(_inner),
400            Self::InternalServerErrorException(_inner) => ::std::option::Option::Some(_inner),
401            Self::ResourceNotFoundException(_inner) => ::std::option::Option::Some(_inner),
402            Self::ThrottlingException(_inner) => ::std::option::Option::Some(_inner),
403            Self::ValidationException(_inner) => ::std::option::Option::Some(_inner),
404            Self::Unhandled(_inner) => ::std::option::Option::Some(&*_inner.source),
405        }
406    }
407}
408impl ::std::fmt::Display for ListTasksError {
409    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
410        match self {
411            Self::AccessDeniedException(_inner) => _inner.fmt(f),
412            Self::InternalServerErrorException(_inner) => _inner.fmt(f),
413            Self::ResourceNotFoundException(_inner) => _inner.fmt(f),
414            Self::ThrottlingException(_inner) => _inner.fmt(f),
415            Self::ValidationException(_inner) => _inner.fmt(f),
416            Self::Unhandled(_inner) => {
417                if let ::std::option::Option::Some(code) = ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self) {
418                    write!(f, "unhandled error ({code})")
419                } else {
420                    f.write_str("unhandled error")
421                }
422            }
423        }
424    }
425}
426impl ::aws_smithy_types::retry::ProvideErrorKind for ListTasksError {
427    fn code(&self) -> ::std::option::Option<&str> {
428        ::aws_smithy_types::error::metadata::ProvideErrorMetadata::code(self)
429    }
430    fn retryable_error_kind(&self) -> ::std::option::Option<::aws_smithy_types::retry::ErrorKind> {
431        match self {
432            Self::InternalServerErrorException(inner) => ::std::option::Option::Some(inner.retryable_error_kind()),
433            Self::ThrottlingException(inner) => ::std::option::Option::Some(inner.retryable_error_kind()),
434            _ => ::std::option::Option::None,
435        }
436    }
437}
438impl ::aws_smithy_types::error::metadata::ProvideErrorMetadata for ListTasksError {
439    fn meta(&self) -> &::aws_smithy_types::error::ErrorMetadata {
440        match self {
441            Self::AccessDeniedException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
442            Self::InternalServerErrorException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
443            Self::ResourceNotFoundException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
444            Self::ThrottlingException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
445            Self::ValidationException(_inner) => ::aws_smithy_types::error::metadata::ProvideErrorMetadata::meta(_inner),
446            Self::Unhandled(_inner) => &_inner.meta,
447        }
448    }
449}
450impl ::aws_smithy_runtime_api::client::result::CreateUnhandledError for ListTasksError {
451    fn create_unhandled_error(
452        source: ::std::boxed::Box<dyn ::std::error::Error + ::std::marker::Send + ::std::marker::Sync + 'static>,
453        meta: ::std::option::Option<::aws_smithy_types::error::ErrorMetadata>,
454    ) -> Self {
455        Self::Unhandled(crate::error::sealed_unhandled::Unhandled {
456            source,
457            meta: meta.unwrap_or_default(),
458        })
459    }
460}
461impl ::aws_types::request_id::RequestId for crate::operation::list_tasks::ListTasksError {
462    fn request_id(&self) -> Option<&str> {
463        self.meta().request_id()
464    }
465}
466
467pub use crate::operation::list_tasks::_list_tasks_output::ListTasksOutput;
468
469pub use crate::operation::list_tasks::_list_tasks_input::ListTasksInput;
470
471mod _list_tasks_input;
472
473mod _list_tasks_output;
474
475/// Builders
476pub mod builders;
477
478/// Paginator for this operation
479pub mod paginator;