Struct ReadApi 

pub struct ReadApi { /* private fields */ }

Defines methods for retrieving data about objects and transactions.

Implementations

impl ReadApi

pub async fn get_owned_objects( &self, address: IotaAddress, query: impl Into<Option<IotaObjectResponseQuery>>, cursor: impl Into<Option<ObjectID>>, limit: impl Into<Option<usize>>, ) -> IotaRpcResult<ObjectsPage>

Get the objects owned by the given address. Results are paginated.

Note that if the address owns more than QUERY_MAX_RESULT_LIMIT objects (default is 50), the pagination may not be accurate as the previous page may have been updated before the next page is fetched.

Examples

use std::str::FromStr;

use iota_sdk::{IotaClientBuilder, types::base_types::IotaAddress};

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let iota = IotaClientBuilder::default().build_testnet().await?;
    let address = IotaAddress::from_str("0x0000....0000")?;
    let owned_objects = iota
        .read_api()
        .get_owned_objects(address, None, None, None)
        .await?;
    Ok(())
}

pub async fn get_dynamic_fields( &self, object_id: ObjectID, cursor: impl Into<Option<ObjectID>>, limit: impl Into<Option<usize>>, ) -> IotaRpcResult<DynamicFieldPage>

Get the dynamic fields owned by the given [ObjectID]. Results are paginated.

If the field is a dynamic field, this method returns the ID of the Field object, which contains both the name and the value.

If the field is a dynamic object field, it returns the ID of the Object, which is the value of the field.

Examples

use std::str::FromStr;

use iota_sdk::{
    IotaClientBuilder,
    types::base_types::{IotaAddress, ObjectID},
};

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let iota = IotaClientBuilder::default().build_testnet().await?;
    let address = IotaAddress::from_str("0x0000....0000")?;
    let owned_objects = iota
        .read_api()
        .get_owned_objects(address, None, None, None)
        .await?;
    // this code example assumes that there are previous owned objects
    let object = owned_objects
        .data
        .get(0)
        .expect(&format!("No owned objects for this address {}", address));
    let object_data = object.data.as_ref().expect(&format!(
        "No object data for this IotaObjectResponse {:?}",
        object
    ));
    let object_id = object_data.object_id;
    let dynamic_fields = iota
        .read_api()
        .get_dynamic_fields(object_id, None, None)
        .await?;
    Ok(())
}

pub async fn get_dynamic_field_object( &self, parent_object_id: ObjectID, name: DynamicFieldName, ) -> IotaRpcResult<IotaObjectResponse>

Get information for a specified dynamic field object by its parent object ID and field name.

pub async fn get_dynamic_field_object_v2( &self, parent_object_id: ObjectID, name: DynamicFieldName, options: impl Into<Option<IotaObjectDataOptions>>, ) -> IotaRpcResult<IotaObjectResponse>

Get information for a specified dynamic field object by its parent object ID and field name with options.

pub async fn try_get_parsed_past_object( &self, object_id: ObjectID, version: SequenceNumber, options: IotaObjectDataOptions, ) -> IotaRpcResult<IotaPastObjectResponse>

Get a parsed past object and version for the provided object ID.

An object’s version increases when the object is mutated, though it is not guaranteed that it increases always by 1. A past object can be used to understand how the object changed over time, i.e. what was the total balance at a specific version.

Examples

use std::str::FromStr;

use iota_sdk::{
    IotaClientBuilder,
    rpc_types::IotaObjectDataOptions,
    types::base_types::{IotaAddress, ObjectID},
};

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let iota = IotaClientBuilder::default().build_testnet().await?;
    let address = IotaAddress::from_str("0x0000....0000")?;
    let owned_objects = iota
        .read_api()
        .get_owned_objects(address, None, None, None)
        .await?;
    // this code example assumes that there are previous owned objects
    let object = owned_objects
        .data
        .get(0)
        .expect(&format!("No owned objects for this address {}", address));
    let object_data = object.data.as_ref().expect(&format!(
        "No object data for this IotaObjectResponse {:?}",
        object
    ));
    let object_id = object_data.object_id;
    let version = object_data.version;
    let past_object = iota
        .read_api()
        .try_get_parsed_past_object(
            object_id,
            version,
            IotaObjectDataOptions {
                show_type: true,
                show_owner: true,
                show_previous_transaction: true,
                show_display: true,
                show_content: true,
                show_bcs: true,
                show_storage_rebate: true,
            },
        )
        .await?;
    Ok(())
}

pub async fn try_multi_get_parsed_past_object( &self, past_objects: Vec<IotaGetPastObjectRequest>, options: IotaObjectDataOptions, ) -> IotaRpcResult<Vec<IotaPastObjectResponse>>

Get a list of parsed past objects.

See Self::try_get_parsed_past_object for more details about past objects.

Examples

use std::str::FromStr;

use iota_sdk::{
    IotaClientBuilder,
    rpc_types::{IotaGetPastObjectRequest, IotaObjectDataOptions},
    types::base_types::{IotaAddress, ObjectID},
};

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let iota = IotaClientBuilder::default().build_testnet().await?;
    let address = IotaAddress::from_str("0x0000....0000")?;
    let owned_objects = iota
        .read_api()
        .get_owned_objects(address, None, None, None)
        .await?;
    // this code example assumes that there are previous owned objects
    let object = owned_objects
        .data
        .get(0)
        .expect(&format!("No owned objects for this address {}", address));
    let object_data = object.data.as_ref().expect(&format!(
        "No object data for this IotaObjectResponse {:?}",
        object
    ));
    let object_id = object_data.object_id;
    let version = object_data.version;
    let past_object = iota
        .read_api()
        .try_get_parsed_past_object(
            object_id,
            version,
            IotaObjectDataOptions {
                show_type: true,
                show_owner: true,
                show_previous_transaction: true,
                show_display: true,
                show_content: true,
                show_bcs: true,
                show_storage_rebate: true,
            },
        )
        .await?;
    let past_object = past_object.into_object()?;
    let multi_past_object = iota
        .read_api()
        .try_multi_get_parsed_past_object(
            vec![IotaGetPastObjectRequest {
                object_id: past_object.object_id,
                version: past_object.version,
            }],
            IotaObjectDataOptions {
                show_type: true,
                show_owner: true,
                show_previous_transaction: true,
                show_display: true,
                show_content: true,
                show_bcs: true,
                show_storage_rebate: true,
            },
        )
        .await?;
    Ok(())
}

pub async fn get_object_with_options( &self, object_id: ObjectID, options: IotaObjectDataOptions, ) -> IotaRpcResult<IotaObjectResponse>

Get an object by object ID with optional fields enabled by IotaObjectDataOptions.

Examples

use std::str::FromStr;

use iota_sdk::{
    IotaClientBuilder, rpc_types::IotaObjectDataOptions, types::base_types::IotaAddress,
};

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let iota = IotaClientBuilder::default().build_testnet().await?;
    let address = IotaAddress::from_str("0x0000....0000")?;
    let owned_objects = iota
        .read_api()
        .get_owned_objects(address, None, None, None)
        .await?;
    // this code example assumes that there are previous owned objects
    let object = owned_objects
        .data
        .get(0)
        .expect(&format!("No owned objects for this address {}", address));
    let object_data = object.data.as_ref().expect(&format!(
        "No object data for this IotaObjectResponse {:?}",
        object
    ));
    let object_id = object_data.object_id;
    let object = iota
        .read_api()
        .get_object_with_options(
            object_id,
            IotaObjectDataOptions {
                show_type: true,
                show_owner: true,
                show_previous_transaction: true,
                show_display: true,
                show_content: true,
                show_bcs: true,
                show_storage_rebate: true,
            },
        )
        .await?;
    Ok(())
}

pub async fn multi_get_object_with_options( &self, object_ids: Vec<ObjectID>, options: IotaObjectDataOptions, ) -> IotaRpcResult<Vec<IotaObjectResponse>>

Get a list of objects by their object IDs with optional fields enabled by IotaObjectDataOptions.

Examples

use std::str::FromStr;

use iota_sdk::{
    IotaClientBuilder, rpc_types::IotaObjectDataOptions, types::base_types::IotaAddress,
};

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let iota = IotaClientBuilder::default().build_testnet().await?;
    let address = IotaAddress::from_str("0x0000....0000")?;
    let owned_objects = iota
        .read_api()
        .get_owned_objects(address, None, None, None)
        .await?;
    // this code example assumes that there are previous owned objects
    let object = owned_objects
        .data
        .get(0)
        .expect(&format!("No owned objects for this address {}", address));
    let object_data = object.data.as_ref().expect(&format!(
        "No object data for this IotaObjectResponse {:?}",
        object
    ));
    let object_id = object_data.object_id;
    let object_ids = vec![object_id]; // and other object ids
    let object = iota
        .read_api()
        .multi_get_object_with_options(
            object_ids,
            IotaObjectDataOptions {
                show_type: true,
                show_owner: true,
                show_previous_transaction: true,
                show_display: true,
                show_content: true,
                show_bcs: true,
                show_storage_rebate: true,
            },
        )
        .await?;
    Ok(())
}

pub async fn get_move_object_bcs( &self, object_id: ObjectID, ) -> IotaRpcResult<Vec<u8>>

Get a [bcs] serialized object’s bytes by object ID.

pub async fn get_total_transaction_blocks(&self) -> IotaRpcResult<u64>

Get the total number of transaction blocks known to server.

Examples

use iota_sdk::IotaClientBuilder;

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let iota = IotaClientBuilder::default().build_testnet().await?;
    let total_transaction_blocks = iota.read_api().get_total_transaction_blocks().await?;
    Ok(())
}

pub async fn get_transaction_with_options( &self, digest: TransactionDigest, options: IotaTransactionBlockResponseOptions, ) -> IotaRpcResult<IotaTransactionBlockResponse>

Get a transaction and its effects by its digest with optional fields enabled by IotaTransactionBlockResponseOptions.

pub async fn multi_get_transactions_with_options( &self, digests: Vec<TransactionDigest>, options: IotaTransactionBlockResponseOptions, ) -> IotaRpcResult<Vec<IotaTransactionBlockResponse>>

Get a list of transactions and their effects by their digests with optional fields enabled by IotaTransactionBlockResponseOptions.

pub async fn query_transaction_blocks( &self, query: IotaTransactionBlockResponseQuery, cursor: impl Into<Option<TransactionDigest>>, limit: impl Into<Option<usize>>, descending_order: bool, ) -> IotaRpcResult<TransactionBlocksPage>

Get filtered transaction blocks information. Results are paginated.

pub async fn query_transaction_blocks_v2( &self, query: IotaTransactionBlockResponseQueryV2, cursor: impl Into<Option<TransactionDigest>>, limit: impl Into<Option<usize>>, descending_order: bool, ) -> IotaRpcResult<TransactionBlocksPage>

Get filtered transaction blocks information. Results are paginated.

pub async fn get_chain_identifier(&self) -> IotaRpcResult<String>

Get the first four bytes of the chain’s genesis checkpoint digest in hex format.

pub async fn get_checkpoint( &self, id: CheckpointId, ) -> IotaRpcResult<Checkpoint>

Get a checkpoint by its ID.

pub async fn get_checkpoints( &self, cursor: impl Into<Option<BigInt<u64>>>, limit: impl Into<Option<usize>>, descending_order: bool, ) -> IotaRpcResult<CheckpointPage>

Return a list of checkpoints. Results are paginated.

pub async fn get_latest_checkpoint_sequence_number( &self, ) -> IotaRpcResult<CheckpointSequenceNumber>

Get the sequence number of the latest checkpoint that has been executed.

pub fn get_transactions_stream( &self, query: IotaTransactionBlockResponseQuery, cursor: impl Into<Option<TransactionDigest>>, descending_order: bool, ) -> impl Stream<Item = IotaTransactionBlockResponse> + '_

Get a stream of transactions.

pub fn get_transactions_stream_v2( &self, query: IotaTransactionBlockResponseQueryV2, cursor: impl Into<Option<TransactionDigest>>, descending_order: bool, ) -> impl Stream<Item = IotaTransactionBlockResponse> + '_

Get a stream of transactions.

pub async fn subscribe_transaction( &self, filter: TransactionFilter, ) -> IotaRpcResult<impl Stream<Item = IotaRpcResult<IotaTransactionBlockEffects>>>

Subscribe to a stream of transactions.

This is only available through WebSockets.

pub async fn get_normalized_move_modules_by_package( &self, package: ObjectID, ) -> IotaRpcResult<BTreeMap<String, IotaMoveNormalizedModule>>

Get move modules by package ID, keyed by name.

pub async fn get_reference_gas_price(&self) -> IotaRpcResult<u64>

Get the reference gas price.

pub async fn dry_run_transaction_block( &self, tx: TransactionData, ) -> IotaRpcResult<DryRunTransactionBlockResponse>

Dry run a transaction block given the provided transaction data.

This simulates running the transaction, including all standard checks, without actually running it. This is useful for estimating the gas fees of a transaction before executing it. You can also use it to identify any side-effects of a transaction before you execute it on the network.

pub async fn dev_inspect_transaction_block( &self, sender_address: IotaAddress, tx: TransactionKind, gas_price: impl Into<Option<BigInt<u64>>>, epoch: impl Into<Option<BigInt<u64>>>, additional_args: impl Into<Option<DevInspectArgs>>, ) -> IotaRpcResult<DevInspectResults>

Use this function to inspect the current state of the network by running a programmable transaction block without committing its effects on chain.

Unlike a dry run, this method will not validate whether the transaction block would succeed or fail under normal circumstances, e.g.:

• Transaction inputs are not checked for ownership (i.e. you can construct calls involving objects you do not own)
• Calls are not checked for visibility (you can call private functions on modules)
• Inputs of any type can be constructed and passed in, including coins and other objects that would usually need to be constructed with a move call
• Function returns do not need to be used, even if they do not have drop

This method’s output includes a breakdown of results returned by every transaction in the block, as well as the transaction’s effects.

To run an accurate simulation of a transaction and understand whether it will successfully validate and run, use Self::dry_run_transaction_block instead.

pub async fn get_protocol_config( &self, version: impl Into<Option<BigInt<u64>>>, ) -> IotaRpcResult<ProtocolConfigResponse>

Get the protocol config by version.

The version defaults to the current version.

pub async fn try_get_object_before_version( &self, object_id: ObjectID, version: SequenceNumber, ) -> IotaRpcResult<IotaPastObjectResponse>

Get an object by ID before the given version.

Trait Implementations

impl DataReader for ReadApi

fn get_reference_gas_price<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<u64, Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Return the reference gas price as a u64 or an error otherwise

fn get_owned_objects<'life0, 'async_trait>( &'life0 self, address: IotaAddress, object_type: StructTag, cursor: Option<ObjectID>, limit: Option<usize>, options: IotaObjectDataOptions, ) -> Pin<Box<dyn Future<Output = Result<ObjectsPage, Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

fn get_object_with_options<'life0, 'async_trait>( &'life0 self, object_id: ObjectID, options: IotaObjectDataOptions, ) -> Pin<Box<dyn Future<Output = Result<IotaObjectResponse, Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

impl Debug for ReadApi

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

Formats the value using the given formatter.