openzeppelin_monitor::services::blockchain

Struct MidnightClient

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pub struct MidnightClient<W: Send + Sync + Clone, S: SubstrateClientTrait = OnlineClient<SubstrateConfig>> { /* private fields */ }
Expand description

Client implementation for Midnight blockchain

Provides high-level access to Midnight blockchain data and operations through HTTP and WebSocket transport. The client supports both generic transport implementations and specific Substrate client configurations.

§Type Parameters

  • W - The WebSocket transport client type, must implement Send, Sync, and Clone
  • S - The Substrate client type, defaults to OnlineClientsubxt::SubstrateConfig

Implementations§

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impl<W: Send + Sync + Clone, S: SubstrateClientTrait> MidnightClient<W, S>

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pub fn new_with_transport(ws_client: W, substrate_client: S) -> Self

Creates a new Midnight client instance with specific transport clients

§Arguments
  • ws_client - The WebSocket transport client
  • substrate_client - The Substrate client for event handling
§Returns

A new instance of MidnightClient

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impl MidnightClient<MidnightWsTransportClient, OnlineClient<SubstrateConfig>>

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pub async fn new(network: &Network) -> Result<Self, Error>

Creates a new Midnight client instance with default configuration

This constructor creates both the WebSocket transport client and the Substrate client using the provided network configuration.

§Arguments
  • network - Network configuration containing RPC endpoints and chain details
§Returns
  • Result<Self, anyhow::Error> - New client instance or connection error

Trait Implementations§

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impl<W: Send + Sync + Clone + BlockchainTransport, S: SubstrateClientTrait> BlockChainClient for MidnightClient<W, S>

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

Retrieves the latest block number with retry functionality

This method ensures we get the correct finalized blocks by first getting the finalized head block hash and then retrieving its number. This handles potential race conditions where different nodes might be at different stages of finalization.

§Returns
  • Result<u64, anyhow::Error> - Latest block number
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fn get_blocks<'life0, 'async_trait>( &'life0 self, start_block: u64, end_block: Option<u64>, ) -> Pin<Box<dyn Future<Output = Result<Vec<BlockType>, Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Retrieves blocks within the specified range with retry functionality

Fetches blocks in parallel for better performance. Each block is retrieved using its hash and then parsed into a MidnightBlock structure.

§Arguments
  • start_block - Starting block number
  • end_block - Optional ending block number. If None, only fetches start_block
§Returns
  • Result<Vec<BlockType>, anyhow::Error> - Collection of blocks or error
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fn get_contract_spec<'life0, 'life1, 'async_trait>( &'life0 self, _contract_id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<ContractSpec, Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Retrieves the contract spec for a given contract ID Read more
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impl<W: Send + Sync + Clone + BlockchainTransport> BlockFilterFactory<MidnightClient<W>> for MidnightClient<W>

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type Filter = MidnightBlockFilter<MidnightClient<W>>

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fn filter() -> Self::Filter

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impl<W: Clone + Send + Sync + Clone, S: Clone + SubstrateClientTrait> Clone for MidnightClient<W, S>

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fn clone(&self) -> MidnightClient<W, S>

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<W: Send + Sync + Clone + BlockchainTransport, S: SubstrateClientTrait> MidnightClientTrait for MidnightClient<W, S>

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fn get_events<'life0, 'async_trait>( &'life0 self, start_block: u64, end_block: Option<u64>, ) -> Pin<Box<dyn Future<Output = Result<Vec<MidnightEvent>, Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Retrieves events within a block range Compactc does not support events yet

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fn get_chain_type<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<String, Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Retrieves the chain type

Auto Trait Implementations§

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impl<W, S> Freeze for MidnightClient<W, S>
where W: Freeze, S: Freeze,

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impl<W, S> RefUnwindSafe for MidnightClient<W, S>
where W: RefUnwindSafe, S: RefUnwindSafe,

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impl<W, S> Send for MidnightClient<W, S>

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impl<W, S> Sync for MidnightClient<W, S>

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impl<W, S> Unpin for MidnightClient<W, S>
where W: Unpin, S: Unpin,

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impl<W, S> UnwindSafe for MidnightClient<W, S>
where W: UnwindSafe, S: UnwindSafe,

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fn len(&self) -> usize

The number of items that this chain link consists of.
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fn append_to(self, v: &mut Vec<T>)

Append the elements in this link to the chain.
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🔬This is a nightly-only experimental API. (clone_to_uninit)
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