Struct aws_sdk_qldb::client::Client

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pub struct Client { /* private fields */ }
Expand description

Client for Amazon QLDB

Client for invoking operations on Amazon QLDB. Each operation on Amazon QLDB is a method on this this struct. .send() MUST be invoked on the generated operations to dispatch the request to the service.

§Constructing a Client

A Config is required to construct a client. For most use cases, the aws-config crate should be used to automatically resolve this config using aws_config::load_from_env(), since this will resolve an SdkConfig which can be shared across multiple different AWS SDK clients. This config resolution process can be customized by calling aws_config::from_env() instead, which returns a ConfigLoader that uses the builder pattern to customize the default config.

In the simplest case, creating a client looks as follows:

let config = aws_config::load_from_env().await;
let client = aws_sdk_qldb::Client::new(&config);

Occasionally, SDKs may have additional service-specific values that can be set on the Config that is absent from SdkConfig, or slightly different settings for a specific client may be desired. The Config struct implements From<&SdkConfig>, so setting these specific settings can be done as follows:

let sdk_config = ::aws_config::load_from_env().await;
let config = aws_sdk_qldb::config::Builder::from(&sdk_config)
    .some_service_specific_setting("value")
    .build();

See the aws-config docs and Config for more information on customizing configuration.

Note: Client construction is expensive due to connection thread pool initialization, and should be done once at application start-up.

§Using the Client

A client has a function for every operation that can be performed by the service. For example, the CancelJournalKinesisStream operation has a Client::cancel_journal_kinesis_stream, function which returns a builder for that operation. The fluent builder ultimately has a send() function that returns an async future that returns a result, as illustrated below:

let result = client.cancel_journal_kinesis_stream()
    .ledger_name("example")
    .send()
    .await;

The underlying HTTP requests that get made by this can be modified with the customize_operation function on the fluent builder. See the customize module for more information.

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impl Client

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pub fn cancel_journal_kinesis_stream( &self ) -> CancelJournalKinesisStreamFluentBuilder

Constructs a fluent builder for the CancelJournalKinesisStream operation.

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impl Client

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pub fn create_ledger(&self) -> CreateLedgerFluentBuilder

Constructs a fluent builder for the CreateLedger operation.

  • The fluent builder is configurable:
    • name(impl Into<String>) / set_name(Option<String>):
      required: true

      The name of the ledger that you want to create. The name must be unique among all of the ledgers in your Amazon Web Services account in the current Region.

      Naming constraints for ledger names are defined in Quotas in Amazon QLDB in the Amazon QLDB Developer Guide.


    • tags(impl Into<String>, Option<String>) / set_tags(Option<HashMap::<String, Option<String>>>):
      required: false

      The key-value pairs to add as tags to the ledger that you want to create. Tag keys are case sensitive. Tag values are case sensitive and can be null.


    • permissions_mode(PermissionsMode) / set_permissions_mode(Option<PermissionsMode>):
      required: true

      The permissions mode to assign to the ledger that you want to create. This parameter can have one of the following values:

      • ALLOW_ALL: A legacy permissions mode that enables access control with API-level granularity for ledgers.

        This mode allows users who have the SendCommand API permission for this ledger to run all PartiQL commands (hence, ALLOW_ALL) on any tables in the specified ledger. This mode disregards any table-level or command-level IAM permissions policies that you create for the ledger.

      • STANDARD: (Recommended) A permissions mode that enables access control with finer granularity for ledgers, tables, and PartiQL commands.

        By default, this mode denies all user requests to run any PartiQL commands on any tables in this ledger. To allow PartiQL commands to run, you must create IAM permissions policies for specific table resources and PartiQL actions, in addition to the SendCommand API permission for the ledger. For information, see Getting started with the standard permissions mode in the Amazon QLDB Developer Guide.

      We strongly recommend using the STANDARD permissions mode to maximize the security of your ledger data.


    • deletion_protection(bool) / set_deletion_protection(Option<bool>):
      required: false

      Specifies whether the ledger is protected from being deleted by any user. If not defined during ledger creation, this feature is enabled (true) by default.

      If deletion protection is enabled, you must first disable it before you can delete the ledger. You can disable it by calling the UpdateLedger operation to set this parameter to false.


    • kms_key(impl Into<String>) / set_kms_key(Option<String>):
      required: false

      The key in Key Management Service (KMS) to use for encryption of data at rest in the ledger. For more information, see Encryption at rest in the Amazon QLDB Developer Guide.

      Use one of the following options to specify this parameter:

      • AWS_OWNED_KMS_KEY: Use an KMS key that is owned and managed by Amazon Web Services on your behalf.

      • Undefined: By default, use an Amazon Web Services owned KMS key.

      • A valid symmetric customer managed KMS key: Use the specified symmetric encryption KMS key in your account that you create, own, and manage.

        Amazon QLDB does not support asymmetric keys. For more information, see Using symmetric and asymmetric keys in the Key Management Service Developer Guide.

      To specify a customer managed KMS key, you can use its key ID, Amazon Resource Name (ARN), alias name, or alias ARN. When using an alias name, prefix it with “alias/”. To specify a key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

      For example:

      • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

      • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

      • Alias name: alias/ExampleAlias

      • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

      For more information, see Key identifiers (KeyId) in the Key Management Service Developer Guide.


  • On success, responds with CreateLedgerOutput with field(s):
    • name(Option<String>):

      The name of the ledger.

    • arn(Option<String>):

      The Amazon Resource Name (ARN) for the ledger.

    • state(Option<LedgerState>):

      The current status of the ledger.

    • creation_date_time(Option<DateTime>):

      The date and time, in epoch time format, when the ledger was created. (Epoch time format is the number of seconds elapsed since 12:00:00 AM January 1, 1970 UTC.)

    • permissions_mode(Option<PermissionsMode>):

      The permissions mode of the ledger that you created.

    • deletion_protection(Option<bool>):

      Specifies whether the ledger is protected from being deleted by any user. If not defined during ledger creation, this feature is enabled (true) by default.

      If deletion protection is enabled, you must first disable it before you can delete the ledger. You can disable it by calling the UpdateLedger operation to set this parameter to false.

    • kms_key_arn(Option<String>):

      The ARN of the customer managed KMS key that the ledger uses for encryption at rest. If this parameter is undefined, the ledger uses an Amazon Web Services owned KMS key for encryption.

  • On failure, responds with SdkError<CreateLedgerError>
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impl Client

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pub fn delete_ledger(&self) -> DeleteLedgerFluentBuilder

Constructs a fluent builder for the DeleteLedger operation.

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impl Client

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pub fn describe_journal_kinesis_stream( &self ) -> DescribeJournalKinesisStreamFluentBuilder

Constructs a fluent builder for the DescribeJournalKinesisStream operation.

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impl Client

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pub fn describe_journal_s3_export(&self) -> DescribeJournalS3ExportFluentBuilder

Constructs a fluent builder for the DescribeJournalS3Export operation.

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impl Client

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pub fn describe_ledger(&self) -> DescribeLedgerFluentBuilder

Constructs a fluent builder for the DescribeLedger operation.

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impl Client

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pub fn export_journal_to_s3(&self) -> ExportJournalToS3FluentBuilder

Constructs a fluent builder for the ExportJournalToS3 operation.

  • The fluent builder is configurable:
    • name(impl Into<String>) / set_name(Option<String>):
      required: true

      The name of the ledger.


    • inclusive_start_time(DateTime) / set_inclusive_start_time(Option<DateTime>):
      required: true

      The inclusive start date and time for the range of journal contents to export.

      The InclusiveStartTime must be in ISO 8601 date and time format and in Universal Coordinated Time (UTC). For example: 2019-06-13T21:36:34Z.

      The InclusiveStartTime must be before ExclusiveEndTime.

      If you provide an InclusiveStartTime that is before the ledger’s CreationDateTime, Amazon QLDB defaults it to the ledger’s CreationDateTime.


    • exclusive_end_time(DateTime) / set_exclusive_end_time(Option<DateTime>):
      required: true

      The exclusive end date and time for the range of journal contents to export.

      The ExclusiveEndTime must be in ISO 8601 date and time format and in Universal Coordinated Time (UTC). For example: 2019-06-13T21:36:34Z.

      The ExclusiveEndTime must be less than or equal to the current UTC date and time.


    • s3_export_configuration(S3ExportConfiguration) / set_s3_export_configuration(Option<S3ExportConfiguration>):
      required: true

      The configuration settings of the Amazon S3 bucket destination for your export request.


    • role_arn(impl Into<String>) / set_role_arn(Option<String>):
      required: true

      The Amazon Resource Name (ARN) of the IAM role that grants QLDB permissions for a journal export job to do the following:

      • Write objects into your Amazon S3 bucket.

      • (Optional) Use your customer managed key in Key Management Service (KMS) for server-side encryption of your exported data.

      To pass a role to QLDB when requesting a journal export, you must have permissions to perform the iam:PassRole action on the IAM role resource. This is required for all journal export requests.


    • output_format(OutputFormat) / set_output_format(Option<OutputFormat>):
      required: false

      The output format of your exported journal data. A journal export job can write the data objects in either the text or binary representation of Amazon Ion format, or in JSON Lines text format.

      Default: ION_TEXT

      In JSON Lines format, each journal block in an exported data object is a valid JSON object that is delimited by a newline. You can use this format to directly integrate JSON exports with analytics tools such as Amazon Athena and Glue because these services can parse newline-delimited JSON automatically.


  • On success, responds with ExportJournalToS3Output with field(s):
    • export_id(String):

      The UUID (represented in Base62-encoded text) that QLDB assigns to each journal export job.

      To describe your export request and check the status of the job, you can use ExportId to call DescribeJournalS3Export.

  • On failure, responds with SdkError<ExportJournalToS3Error>
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impl Client

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pub fn get_block(&self) -> GetBlockFluentBuilder

Constructs a fluent builder for the GetBlock operation.

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impl Client

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pub fn get_digest(&self) -> GetDigestFluentBuilder

Constructs a fluent builder for the GetDigest operation.

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impl Client

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pub fn get_revision(&self) -> GetRevisionFluentBuilder

Constructs a fluent builder for the GetRevision operation.

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impl Client

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pub fn list_journal_kinesis_streams_for_ledger( &self ) -> ListJournalKinesisStreamsForLedgerFluentBuilder

Constructs a fluent builder for the ListJournalKinesisStreamsForLedger operation. This operation supports pagination; See into_paginator().

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impl Client

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pub fn list_journal_s3_exports(&self) -> ListJournalS3ExportsFluentBuilder

Constructs a fluent builder for the ListJournalS3Exports operation. This operation supports pagination; See into_paginator().

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impl Client

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pub fn list_journal_s3_exports_for_ledger( &self ) -> ListJournalS3ExportsForLedgerFluentBuilder

Constructs a fluent builder for the ListJournalS3ExportsForLedger operation. This operation supports pagination; See into_paginator().

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impl Client

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pub fn list_ledgers(&self) -> ListLedgersFluentBuilder

Constructs a fluent builder for the ListLedgers operation. This operation supports pagination; See into_paginator().

  • The fluent builder is configurable:
  • On success, responds with ListLedgersOutput with field(s):
    • ledgers(Option<Vec::<LedgerSummary>>):

      The ledgers that are associated with the current Amazon Web Services account and Region.

    • next_token(Option<String>):

      A pagination token, indicating whether there are more results available:

      • If NextToken is empty, then the last page of results has been processed and there are no more results to be retrieved.

      • If NextToken is not empty, then there are more results available. To retrieve the next page of results, use the value of NextToken in a subsequent ListLedgers call.

  • On failure, responds with SdkError<ListLedgersError>
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impl Client

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pub fn list_tags_for_resource(&self) -> ListTagsForResourceFluentBuilder

Constructs a fluent builder for the ListTagsForResource operation.

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impl Client

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pub fn stream_journal_to_kinesis(&self) -> StreamJournalToKinesisFluentBuilder

Constructs a fluent builder for the StreamJournalToKinesis operation.

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impl Client

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pub fn tag_resource(&self) -> TagResourceFluentBuilder

Constructs a fluent builder for the TagResource operation.

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impl Client

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pub fn untag_resource(&self) -> UntagResourceFluentBuilder

Constructs a fluent builder for the UntagResource operation.

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impl Client

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pub fn update_ledger(&self) -> UpdateLedgerFluentBuilder

Constructs a fluent builder for the UpdateLedger operation.

  • The fluent builder is configurable:
    • name(impl Into<String>) / set_name(Option<String>):
      required: true

      The name of the ledger.


    • deletion_protection(bool) / set_deletion_protection(Option<bool>):
      required: false

      Specifies whether the ledger is protected from being deleted by any user. If not defined during ledger creation, this feature is enabled (true) by default.

      If deletion protection is enabled, you must first disable it before you can delete the ledger. You can disable it by calling the UpdateLedger operation to set this parameter to false.


    • kms_key(impl Into<String>) / set_kms_key(Option<String>):
      required: false

      The key in Key Management Service (KMS) to use for encryption of data at rest in the ledger. For more information, see Encryption at rest in the Amazon QLDB Developer Guide.

      Use one of the following options to specify this parameter:

      • AWS_OWNED_KMS_KEY: Use an KMS key that is owned and managed by Amazon Web Services on your behalf.

      • Undefined: Make no changes to the KMS key of the ledger.

      • A valid symmetric customer managed KMS key: Use the specified symmetric encryption KMS key in your account that you create, own, and manage.

        Amazon QLDB does not support asymmetric keys. For more information, see Using symmetric and asymmetric keys in the Key Management Service Developer Guide.

      To specify a customer managed KMS key, you can use its key ID, Amazon Resource Name (ARN), alias name, or alias ARN. When using an alias name, prefix it with “alias/”. To specify a key in a different Amazon Web Services account, you must use the key ARN or alias ARN.

      For example:

      • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

      • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

      • Alias name: alias/ExampleAlias

      • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

      For more information, see Key identifiers (KeyId) in the Key Management Service Developer Guide.


  • On success, responds with UpdateLedgerOutput with field(s):
    • name(Option<String>):

      The name of the ledger.

    • arn(Option<String>):

      The Amazon Resource Name (ARN) for the ledger.

    • state(Option<LedgerState>):

      The current status of the ledger.

    • creation_date_time(Option<DateTime>):

      The date and time, in epoch time format, when the ledger was created. (Epoch time format is the number of seconds elapsed since 12:00:00 AM January 1, 1970 UTC.)

    • deletion_protection(Option<bool>):

      Specifies whether the ledger is protected from being deleted by any user. If not defined during ledger creation, this feature is enabled (true) by default.

      If deletion protection is enabled, you must first disable it before you can delete the ledger. You can disable it by calling the UpdateLedger operation to set this parameter to false.

    • encryption_description(Option<LedgerEncryptionDescription>):

      Information about the encryption of data at rest in the ledger. This includes the current status, the KMS key, and when the key became inaccessible (in the case of an error).

  • On failure, responds with SdkError<UpdateLedgerError>
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impl Client

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pub fn update_ledger_permissions_mode( &self ) -> UpdateLedgerPermissionsModeFluentBuilder

Constructs a fluent builder for the UpdateLedgerPermissionsMode operation.

  • The fluent builder is configurable:
    • name(impl Into<String>) / set_name(Option<String>):
      required: true

      The name of the ledger.


    • permissions_mode(PermissionsMode) / set_permissions_mode(Option<PermissionsMode>):
      required: true

      The permissions mode to assign to the ledger. This parameter can have one of the following values:

      • ALLOW_ALL: A legacy permissions mode that enables access control with API-level granularity for ledgers.

        This mode allows users who have the SendCommand API permission for this ledger to run all PartiQL commands (hence, ALLOW_ALL) on any tables in the specified ledger. This mode disregards any table-level or command-level IAM permissions policies that you create for the ledger.

      • STANDARD: (Recommended) A permissions mode that enables access control with finer granularity for ledgers, tables, and PartiQL commands.

        By default, this mode denies all user requests to run any PartiQL commands on any tables in this ledger. To allow PartiQL commands to run, you must create IAM permissions policies for specific table resources and PartiQL actions, in addition to the SendCommand API permission for the ledger. For information, see Getting started with the standard permissions mode in the Amazon QLDB Developer Guide.

      We strongly recommend using the STANDARD permissions mode to maximize the security of your ledger data.


  • On success, responds with UpdateLedgerPermissionsModeOutput with field(s):
  • On failure, responds with SdkError<UpdateLedgerPermissionsModeError>
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impl Client

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pub fn from_conf(conf: Config) -> Self

Creates a new client from the service Config.

§Panics

This method will panic in the following cases:

  • Retries or timeouts are enabled without a sleep_impl configured.
  • Identity caching is enabled without a sleep_impl and time_source configured.
  • No behavior_version is provided.

The panic message for each of these will have instructions on how to resolve them.

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pub fn config(&self) -> &Config

Returns the client’s configuration.

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impl Client

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pub fn new(sdk_config: &SdkConfig) -> Self

Creates a new client from an SDK Config.

§Panics
  • This method will panic if the sdk_config is missing an async sleep implementation. If you experience this panic, set the sleep_impl on the Config passed into this function to fix it.
  • This method will panic if the sdk_config is missing an HTTP connector. If you experience this panic, set the http_connector on the Config passed into this function to fix it.
  • This method will panic if no BehaviorVersion is provided. If you experience this panic, set behavior_version on the Config or enable the behavior-version-latest Cargo feature.

Trait Implementations§

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impl Clone for Client

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fn clone(&self) -> Client

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Client

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl Freeze for Client

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impl !RefUnwindSafe for Client

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impl Send for Client

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impl Sync for Client

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impl Unpin for Client

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impl !UnwindSafe for Client

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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where T: ?Sized,

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Immutably borrows from an owned value. Read more
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where T: ?Sized,

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Mutably borrows from an owned value. Read more
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Returns the argument unchanged.

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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where U: From<T>,

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Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where Shared: FromUnshared<Unshared>,

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fn into_shared(self) -> Shared

Creates a shared type from an unshared type.
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Should always be Self
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where T: Clone,

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Uses borrowed data to replace owned data, usually by cloning. Read more
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Performs the conversion.
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type Error = <U as TryFrom<T>>::Error

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