Struct ApexSDKBuilder 

pub struct ApexSDKBuilder { /* private fields */ }

Builder for constructing an ApexSDK instance with customizable configuration.

The builder pattern allows you to configure the SDK with one or both blockchain adapters (Substrate and EVM) before initialization. At least one adapter must be configured for the SDK to function.

Examples

Configure with Substrate only

use apex_sdk::prelude::*;

let sdk = ApexSDK::builder()
    .with_substrate_endpoint("wss://polkadot.api.onfinality.io/public-ws")
    .build()
    .await?;

Configure with EVM only

use apex_sdk::prelude::*;

let sdk = ApexSDK::builder()
    .with_evm_endpoint("https://mainnet.infura.io/v3/YOUR_KEY")
    .build()
    .await?;

Configure with both adapters

use apex_sdk::prelude::*;

let sdk = ApexSDK::builder()
    .with_substrate_endpoint("wss://polkadot.api.onfinality.io/public-ws")
    .with_evm_endpoint("https://mainnet.infura.io/v3/YOUR_KEY")
    .with_timeout(60)
    .build()
    .await?;

Implementations

impl ApexSDKBuilder

pub fn new() -> Self

Create a new builder instance.

Examples

use apex_sdk::builder::ApexSDKBuilder;

let builder = ApexSDKBuilder::new();

pub fn with_substrate_endpoint(self, url: impl Into<String>) -> Self

Set the Substrate endpoint URL.

This endpoint will be used to connect to Substrate-based blockchains like Polkadot and Kusama. The URL should be a WebSocket endpoint (typically starting with wss:// or ws://).

Arguments

• url - The WebSocket URL of the Substrate endpoint

Examples

use apex_sdk::builder::ApexSDKBuilder;

let builder = ApexSDKBuilder::new()
    .with_substrate_endpoint("wss://polkadot.api.onfinality.io/public-ws");

pub fn with_evm_endpoint(self, url: impl Into<String>) -> Self

Set the EVM endpoint URL.

This endpoint will be used to connect to EVM-compatible blockchains like Ethereum, Polygon, BSC, and Avalanche. The URL should be an HTTP or HTTPS endpoint.

Arguments

• url - The HTTP(S) URL of the EVM endpoint

Examples

use apex_sdk::builder::ApexSDKBuilder;

let builder = ApexSDKBuilder::new()
    .with_evm_endpoint("https://mainnet.infura.io/v3/YOUR_KEY");

pub fn with_timeout(self, seconds: u64) -> Self

Set the connection timeout in seconds.

This timeout applies to the initial connection attempts to the configured blockchain endpoints. If not set, a default timeout will be used.

Arguments

• seconds - Timeout duration in seconds

Examples

use apex_sdk::builder::ApexSDKBuilder;

let builder = ApexSDKBuilder::new()
    .with_evm_endpoint("https://mainnet.infura.io/v3/YOUR_KEY")
    .with_timeout(30);

pub async fn build(self) -> Result<ApexSDK>

Build the ApexSDK instance.

This method consumes the builder and attempts to create an ApexSDK instance by connecting to the configured endpoints. At least one adapter (Substrate or EVM) must be configured, or this will return an error.

Errors

Returns an error if:

• No adapters are configured
• Connection to any configured endpoint fails

Examples

use apex_sdk::prelude::*;

let sdk = ApexSDK::builder()
    .with_evm_endpoint("https://mainnet.infura.io/v3/YOUR_KEY")
    .build()
    .await?;

// Use the SDK...

Trait Implementations

impl Default for ApexSDKBuilder

fn default() -> ApexSDKBuilder

Returns the “default value” for a type.