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use std::{marker::PhantomData, path::Path};
use peace_flow_model::FlowId;
use peace_flow_rt::ItemGraph;
use peace_item_model::ItemId;
use peace_resource_rt::{
paths::{StatesCurrentFile, StatesGoalFile},
states::{
ts::{CurrentStored, GoalStored},
States, StatesCurrentStored, StatesGoalStored,
},
type_reg::untagged::{BoxDtDisplay, TypeMapOpt, TypeReg},
};
use peace_rt_model::Storage;
use peace_rt_model_core::{Error, StatesDeserializeError};
/// Reads and writes [`StatesCurrentStored`] and [`StatesGoalStored`] to and
/// from storage.
pub struct StatesSerializer<E>(PhantomData<E>);
impl<E> StatesSerializer<E>
where
E: std::error::Error + From<Error> + Send + 'static,
{
/// Returns the [`StatesCurrentStored`] of all [`Item`]s if it exists on
/// disk.
///
/// # Parameters:
///
/// * `storage`: `Storage` to read from.
/// * `states`: States to serialize.
/// * `states_file_path`: Path to save the serialized states to.
///
/// [`Item`]: peace_cfg::Item
pub async fn serialize<TS>(
storage: &Storage,
item_graph: &ItemGraph<E>,
states: &States<TS>,
states_file_path: &Path,
) -> Result<(), E>
where
TS: Send + Sync,
{
let states_serde = item_graph.states_serde::<serde_yaml::Value, _>(states);
storage
.serialized_write(
#[cfg(not(target_arch = "wasm32"))]
"StatesSerializer::serialize".to_string(),
states_file_path,
&states_serde,
Error::StatesSerialize,
)
.await?;
Ok(())
}
/// Returns the [`StatesCurrentStored`] of all [`Item`]s if it exists on
/// disk.
///
/// # Parameters:
///
/// * `storage`: `Storage` to read from.
/// * `states_type_reg`: Type registry with functions to deserialize each
/// item state.
/// * `states_current_file`: `StatesCurrentFile` to deserialize.
///
/// [`Item`]: peace_cfg::Item
pub async fn deserialize_stored(
flow_id: &FlowId,
storage: &Storage,
states_type_reg: &TypeReg<ItemId, BoxDtDisplay>,
states_current_file: &StatesCurrentFile,
) -> Result<StatesCurrentStored, E> {
let states = Self::deserialize_internal::<CurrentStored>(
#[cfg(not(target_arch = "wasm32"))]
"StatesSerializer::deserialize_stored".to_string(),
flow_id,
storage,
states_type_reg,
states_current_file,
)
.await?;
states.ok_or_else(|| E::from(Error::StatesCurrentDiscoverRequired))
}
/// Returns the [`StatesGoalStored`] of all [`Item`]s if it exists on disk.
///
/// # Parameters:
///
/// * `storage`: `Storage` to read from.
/// * `states_type_reg`: Type registry with functions to deserialize each
/// item state.
/// * `states_goal_file`: `StatesGoalFile` to deserialize.
///
/// [`Item`]: peace_cfg::Item
pub async fn deserialize_goal(
flow_id: &FlowId,
storage: &Storage,
states_type_reg: &TypeReg<ItemId, BoxDtDisplay>,
states_goal_file: &StatesGoalFile,
) -> Result<StatesGoalStored, E> {
let states = Self::deserialize_internal::<GoalStored>(
#[cfg(not(target_arch = "wasm32"))]
"StatesSerializer::deserialize_goal".to_string(),
flow_id,
storage,
states_type_reg,
states_goal_file,
)
.await?;
states.ok_or_else(|| E::from(Error::StatesGoalDiscoverRequired))
}
/// Returns the [`StatesCurrentStored`] of all [`Item`]s if it exists on
/// disk.
///
/// # Parameters:
///
/// * `storage`: `Storage` to read from.
/// * `states_type_reg`: Type registry with functions to deserialize each
/// item state.
/// * `states_current_file`: `StatesCurrentFile` to deserialize.
///
/// [`Item`]: peace_cfg::Item
pub async fn deserialize_stored_opt(
flow_id: &FlowId,
storage: &Storage,
states_type_reg: &TypeReg<ItemId, BoxDtDisplay>,
states_current_file: &StatesCurrentFile,
) -> Result<Option<StatesCurrentStored>, E> {
Self::deserialize_internal(
#[cfg(not(target_arch = "wasm32"))]
"StatesSerializer::deserialize_stored_opt".to_string(),
flow_id,
storage,
states_type_reg,
states_current_file,
)
.await
}
/// Returns the [`States`] of all [`Item`]s if it exists on disk.
///
/// # Parameters:
///
/// * `storage`: `Storage` to read from.
/// * `states_type_reg`: Type registry with functions to deserialize each
/// item state.
/// * `states_current_file`: `StatesCurrentFile` to deserialize.
///
/// # Type Parameters
///
/// * `TS`: The states type state to use, such as [`ts::Current`] or
/// [`ts::CurrentStored`].
///
/// [`Item`]: peace_cfg::Item
/// [`ts::Current`]: peace_resource_rt::states::ts::Current
/// [`ts::CurrentStored`]: peace_resource_rt::states::ts::CurrentStored
#[cfg(not(target_arch = "wasm32"))]
async fn deserialize_internal<TS>(
thread_name: String,
flow_id: &FlowId,
storage: &Storage,
states_type_reg: &TypeReg<ItemId, BoxDtDisplay>,
states_file_path: &Path,
) -> Result<Option<States<TS>>, E>
where
TS: Send + Sync,
{
let states_opt = storage
.serialized_typemap_read_opt(thread_name, states_type_reg, states_file_path, |error| {
#[cfg(not(feature = "error_reporting"))]
{
Error::StatesDeserialize(Box::new(StatesDeserializeError {
flow_id: flow_id.clone(),
error,
}))
}
#[cfg(feature = "error_reporting")]
{
use miette::NamedSource;
use yaml_error_context_hack::ErrorAndContext;
let file_contents = std::fs::read_to_string(states_file_path).unwrap();
let ErrorAndContext {
error_span,
error_message,
context_span,
} = ErrorAndContext::new(&file_contents, &error);
let states_file_source =
NamedSource::new(states_file_path.to_string_lossy(), file_contents);
Error::StatesDeserialize(Box::new(StatesDeserializeError {
flow_id: flow_id.clone(),
states_file_source,
error_span,
error_message,
context_span,
error,
}))
}
})
.await
.map(|type_map_opt| {
type_map_opt
.map(TypeMapOpt::into_type_map)
.map(States::from)
})?;
Ok(states_opt)
}
/// Returns the [`States`] of all [`Item`]s if it exists on disk.
///
/// # Parameters:
///
/// * `storage`: `Storage` to read from.
/// * `states_type_reg`: Type registry with functions to deserialize each
/// item state.
/// * `states_current_file`: `StatesCurrentFile` to deserialize.
///
/// # Type Parameters
///
/// * `TS`: The states type state to use, such as [`ts::Current`] or
/// [`ts::CurrentStored`].
///
/// [`Item`]: peace_cfg::Item
/// [`ts::Current`]: peace_resource_rt::states::ts::Current
/// [`ts::CurrentStored`]: peace_resource_rt::states::ts::CurrentStored
#[cfg(target_arch = "wasm32")]
async fn deserialize_internal<TS>(
flow_id: &FlowId,
storage: &Storage,
states_type_reg: &TypeReg<ItemId, BoxDtDisplay>,
states_file_path: &Path,
) -> Result<Option<States<TS>>, E>
where
TS: Send + Sync,
{
let states_opt = storage
.serialized_typemap_read_opt(states_type_reg, states_file_path, |error| {
#[cfg(not(feature = "error_reporting"))]
{
Error::StatesDeserialize(Box::new(StatesDeserializeError {
flow_id: flow_id.clone(),
error,
}))
}
#[cfg(feature = "error_reporting")]
{
use miette::NamedSource;
use yaml_error_context_hack::ErrorAndContext;
let file_contents = std::fs::read_to_string(states_file_path).unwrap();
let ErrorAndContext {
error_span,
error_message,
context_span,
} = ErrorAndContext::new(&file_contents, &error);
let states_file_source =
NamedSource::new(states_file_path.to_string_lossy(), file_contents);
Error::StatesDeserialize(Box::new(StatesDeserializeError {
flow_id: flow_id.clone(),
states_file_source,
error_span,
error_message,
context_span,
error,
}))
}
})
.await
.map(|type_map_opt| {
type_map_opt
.map(TypeMapOpt::into_type_map)
.map(States::from)
})?;
Ok(states_opt)
}
}