pie 0.1.1

Programmable Inference Engine (PIE)
Documentation 
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use crate::bindings;
use crate::bindings::core;
use crate::instance::InstanceState;
use crate::model::{Command, ManagedTypes};
use tokio::sync::oneshot;
use wasmtime::component::Resource;
use wasmtime_wasi::p2::IoView;

type ObjectId = bindings::pie::inferlet::allocate::ObjectId;

impl bindings::pie::inferlet::allocate::Host for InstanceState {
    async fn get_kv_page_size(&mut self, queue: Resource<core::Queue>) -> anyhow::Result<u32> {
        let q = self.table().get(&queue)?;
        let (tx, rx) = oneshot::channel();
        Command::GetBlockSize { handle: tx }.dispatch(q.service_id)?;
        let block_size = rx.await?;
        Ok(block_size)
    }

    async fn get_all_exported_kv_pages(
        &mut self,
        queue: Resource<core::Queue>,
    ) -> anyhow::Result<Vec<(String, u32)>> {
        let q = self.table().get(&queue)?;
        let (tx, rx) = oneshot::channel();
        Command::GetAllExportedKvPages { handle: tx }.dispatch(q.service_id)?;
        rx.await.map_err(Into::into)
    }

    async fn allocate_kv_pages(
        &mut self,
        queue: Resource<core::Queue>,
        kv_page_ids: Vec<ObjectId>,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::Allocate {
            inst_id,
            stream_id: q.stream_id,
            ty: ManagedTypes::KvPage,
            ids: kv_page_ids,
        }
        .dispatch(q.service_id)?;
        Ok(())
    }

    async fn deallocate_kv_pages(
        &mut self,
        queue: Resource<core::Queue>,
        kv_page_ids: Vec<ObjectId>,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::Deallocate {
            inst_id,
            stream_id: q.stream_id,
            ty: ManagedTypes::KvPage,
            ids: kv_page_ids,
        }
        .dispatch(q.service_id)?;
        Ok(())
    }

    async fn allocate_embeds(
        &mut self,
        queue: Resource<core::Queue>,
        embed_ids: Vec<ObjectId>,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::Allocate {
            inst_id,
            stream_id: q.stream_id,
            ty: ManagedTypes::Embed,
            ids: embed_ids,
        }
        .dispatch(q.service_id)?;
        Ok(())
    }

    async fn deallocate_embeds(
        &mut self,
        queue: Resource<core::Queue>,
        embed_ids: Vec<ObjectId>,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::Deallocate {
            inst_id,
            stream_id: q.stream_id,
            ty: ManagedTypes::Embed,
            ids: embed_ids,
        }
        .dispatch(q.service_id)?;
        Ok(())
    }

    async fn copy_kv_page(
        &mut self,
        queue: Resource<core::Queue>,
        src_kv_page_id: ObjectId,
        dst_kv_page_id: ObjectId,
        src_offset: u32,
        dst_offset: u32,
        size: u32,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::CopyKvPage {
            inst_id,
            stream_id: q.stream_id,
            src_kv_page: src_kv_page_id,
            dst_kv_page: dst_kv_page_id,
            src_token_offset: src_offset,
            dst_token_offset: dst_offset,
            size,
        }
        .dispatch(q.service_id)?;
        Ok(())
    }

    async fn export_kv_pages(
        &mut self,
        queue: Resource<core::Queue>,
        src_kv_page_ids: Vec<ObjectId>,
        name: String,
        persistent: bool,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::ExportKvPages {
            inst_id,
            pages: src_kv_page_ids,
            resource_name: name,
            persistent,
        }
        .dispatch(q.service_id)?;

        Ok(())
    }

    async fn unexport_kv_pages(
        &mut self,
        queue: Resource<core::Queue>,
        name: String,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::UnexportKvPages {
            inst_id,
            resource_name: name,
        }
        .dispatch(q.service_id)?;

        Ok(())
    }

    async fn import_kv_pages(
        &mut self,
        queue: Resource<core::Queue>,
        dst_kv_page_ids: Vec<ObjectId>,
        name: String,
    ) -> anyhow::Result<()> {
        let inst_id = self.id();
        let q = self.table().get(&queue)?;
        Command::ImportKvPages {
            inst_id,
            kv_pages: dst_kv_page_ids,
            resource_name: name,
        }
        .dispatch(q.service_id)?;
        Ok(())
    }
}