fuel-core 0.48.0

Fuel client library is aggregation of all fuels service. It contains the all business logic of the fuel protocol.
Documentation 
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use crate::{
    database::Database,
    service::adapters::ExecutorAdapter,
};
use fuel_core_importer::ports::Validator;
use fuel_core_storage::{
    not_found,
    transactional::AtomicView,
};
use fuel_core_types::{
    fuel_types::BlockHeight,
    services::{
        block_importer::{
            ImportResult,
            SharedImportResult,
        },
        executor::ValidationResult,
    },
};
use std::sync::Arc;

#[derive(Clone)]
pub struct ImportResultProvider {
    on_chain_database: Database,
    executor_adapter: ExecutorAdapter,
}

impl ImportResultProvider {
    pub fn new(on_chain_database: Database, executor_adapter: ExecutorAdapter) -> Self {
        Self {
            on_chain_database,
            executor_adapter,
        }
    }
}

/// Represents either the Genesis Block or a block at a specific height
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, Ord, PartialOrd)]
pub enum BlockAt {
    /// Block at a specific height
    Specific(BlockHeight),
    /// Genesis block
    Genesis,
}

impl ImportResultProvider {
    pub fn result_at_height(
        &self,
        height: BlockAt,
    ) -> anyhow::Result<SharedImportResult> {
        match height {
            BlockAt::Specific(height) => {
                let sealed_block = self
                    .on_chain_database
                    .latest_view()?
                    .get_sealed_block_by_height(&height)?
                    .ok_or(not_found!("SealedBlock"))?;

                let ValidationResult { tx_status, events } = self
                    .executor_adapter
                    .validate(&sealed_block.entity)?
                    .into_result();
                let result =
                    ImportResult::new_from_local(sealed_block, tx_status, events);
                Ok(Arc::new(result.wrap()))
            }
            BlockAt::Genesis => {
                let genesis_height = self
                    .on_chain_database
                    .latest_view()?
                    .genesis_height()?
                    .ok_or(not_found!("Genesis height"))?;
                let sealed_block = self
                    .on_chain_database
                    .latest_view()?
                    .get_sealed_block_by_height(&genesis_height)?
                    .ok_or(not_found!("SealedBlock"))?;

                Ok(Arc::new(
                    ImportResult::new_from_local(sealed_block, vec![], vec![]).wrap(),
                ))
            }
        }
    }
}