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use it_json_serde::ITJsonSeDeError;
use marine::MError;
use thiserror::Error;
use std::io::Error as IOError;
use std::path::PathBuf;
#[derive(Debug, Error)]
pub enum FaaSError {
#[error("InvalidConfig: {0}")]
InvalidConfig(String),
#[error(
"module with name {module_import_name} is specified in config (dir: {modules_dir:?}), \
but not found in provided modules: {provided_modules:?}"
)]
InstantiationError {
module_import_name: String,
modules_dir: Option<PathBuf>,
provided_modules: Vec<String>,
},
#[error("IOError: {0}")]
IOError(String),
#[error("function with name `{0}` is missing")]
MissingFunctionError(String),
#[error(r#"argument with name "{0}" is missing"#)]
MissingArgumentError(String),
#[error(r#"module with name "{0}" is missing"#)]
NoSuchModule(String),
#[error(r#"arguments from json deserialization error in module "{module_name}", function "{function_name}": {error}"#)]
JsonArgumentsDeserializationError {
module_name: String,
function_name: String,
error: ITJsonSeDeError,
},
#[error(r#"output to json serialization error in module "{module_name}", function "{function_name}": {error}"#)]
JsonOutputSerializationError {
module_name: String,
function_name: String,
error: ITJsonSeDeError,
},
#[error("parsing config error: {0}")]
ParseConfigError(#[from] toml::de::Error),
#[error(
"max_heap_size = '{max_heap_size_wanted}' can't be bigger than {max_heap_size_allowed}'"
)]
MaxHeapSizeOverflow {
max_heap_size_wanted: u64,
max_heap_size_allowed: u64,
},
#[error("engine error: {0}")]
EngineError(#[from] MError),
}
impl From<IOError> for FaaSError {
fn from(err: IOError) -> Self {
FaaSError::IOError(format!("{}", err))
}
}
impl From<std::convert::Infallible> for FaaSError {
fn from(_: std::convert::Infallible) -> Self {
unreachable!()
}
}
#[macro_export]
macro_rules! json_to_faas_err {
($json_expr:expr, $module_name:expr, $function_name:expr) => {
$json_expr.map_err(|e| match e {
it_json_serde::ITJsonSeDeError::Se(_) => FaaSError::JsonOutputSerializationError {
module_name: $module_name,
function_name: $function_name,
error: e,
},
it_json_serde::ITJsonSeDeError::De(_) => FaaSError::JsonArgumentsDeserializationError {
module_name: $module_name,
function_name: $function_name,
error: e,
},
})
};
}