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use core::convert::TryFrom;
use core::fmt::Display;
use core::str::FromStr;
use heapless::String;
use mqttrust::MqttError;
use super::data_types::ErrorResponse;
#[derive(Debug, Clone)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum Error {
Overflow,
NoPersistance,
DaoRead,
DaoWrite,
InvalidPayload,
WrongShadowName,
Mqtt(MqttError),
ShadowError(ShadowError),
}
impl From<MqttError> for Error {
fn from(e: MqttError) -> Self {
Self::Mqtt(e)
}
}
impl From<ShadowError> for Error {
fn from(e: ShadowError) -> Self {
Self::ShadowError(e)
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
pub enum ShadowError {
InvalidJson,
MissingState,
MalformedState,
MalformedDesired,
MalformedReported,
InvalidVersion,
InvalidClientToken,
JsonTooDeep,
InvalidStateNode,
Unauthorized,
Forbidden,
NotFound,
NoNamedShadow(String<64>),
VersionConflict,
PayloadTooLarge,
UnsupportedEncoding,
TooManyRequests,
InternalServerError,
}
impl ShadowError {
pub fn http_code(&self) -> u16 {
match self {
ShadowError::InvalidJson
| ShadowError::MissingState
| ShadowError::MalformedState
| ShadowError::MalformedDesired
| ShadowError::MalformedReported
| ShadowError::InvalidVersion
| ShadowError::InvalidClientToken
| ShadowError::JsonTooDeep
| ShadowError::InvalidStateNode => 400,
ShadowError::Unauthorized => 401,
ShadowError::Forbidden => 403,
ShadowError::NotFound | ShadowError::NoNamedShadow(_) => 404,
ShadowError::VersionConflict => 409,
ShadowError::PayloadTooLarge => 413,
ShadowError::UnsupportedEncoding => 415,
ShadowError::TooManyRequests => 429,
ShadowError::InternalServerError => 500,
}
}
}
impl<'a> TryFrom<ErrorResponse<'a>> for ShadowError {
type Error = ();
fn try_from(e: ErrorResponse<'a>) -> Result<Self, Self::Error> {
Ok(match e.code {
400 | 404 => Self::from_str(e.message)?,
401 => ShadowError::Unauthorized,
403 => ShadowError::Forbidden,
409 => ShadowError::VersionConflict,
413 => ShadowError::PayloadTooLarge,
415 => ShadowError::UnsupportedEncoding,
429 => ShadowError::TooManyRequests,
500 => ShadowError::InternalServerError,
_ => return Err(()),
})
}
}
impl Display for ShadowError {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
match self {
Self::InvalidJson => write!(f, "Invalid JSON"),
Self::MissingState => write!(f, "Missing required node: state"),
Self::MalformedState => write!(f, "State node must be an object"),
Self::MalformedDesired => write!(f, "Desired node must be an object"),
Self::MalformedReported => write!(f, "Reported node must be an object"),
Self::InvalidVersion => write!(f, "Invalid version"),
Self::InvalidClientToken => write!(f, "Invalid clientToken"),
Self::JsonTooDeep => {
write!(f, "JSON contains too many levels of nesting; maximum is 6")
}
Self::InvalidStateNode => write!(f, "State contains an invalid node"),
Self::Unauthorized => write!(f, "Unauthorized"),
Self::Forbidden => write!(f, "Forbidden"),
Self::NotFound => write!(f, "Thing not found"),
Self::NoNamedShadow(shadow_name) => {
write!(f, "No shadow exists with name: {}", shadow_name)
}
Self::VersionConflict => write!(f, "Version conflict"),
Self::PayloadTooLarge => write!(f, "The payload exceeds the maximum size allowed"),
Self::UnsupportedEncoding => write!(
f,
"Unsupported documented encoding; supported encoding is UTF-8"
),
Self::TooManyRequests => write!(f, "The Device Shadow service will generate this error message when there are more than 10 in-flight requests on a single connection"),
Self::InternalServerError => write!(f, "Internal service failure"),
}
}
}
impl FromStr for ShadowError {
type Err = ();
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(match s.trim() {
"Invalid JSON" => Self::InvalidJson,
"Missing required node: state" => Self::MissingState,
"State node must be an object" => Self::MalformedState,
"Desired node must be an object" => Self::MalformedDesired,
"Reported node must be an object" => Self::MalformedReported,
"Invalid version" => Self::InvalidVersion,
"Invalid clientToken" => Self::InvalidClientToken,
"JSON contains too many levels of nesting; maximum is 6" => Self::JsonTooDeep,
"State contains an invalid node" => Self::InvalidStateNode,
"Unauthorized" => Self::Unauthorized,
"Forbidden" => Self::Forbidden,
"Thing not found" => Self::NotFound,
"No shadow exists with name: " => Self::NoNamedShadow(String::new()),
"Version conflict" => Self::VersionConflict,
"The payload exceeds the maximum size allowed" => Self::PayloadTooLarge,
"Unsupported documented encoding; supported encoding is UTF-8" => {
Self::UnsupportedEncoding
}
"The Device Shadow service will generate this error message when there are more than 10 in-flight requests on a single connection" => Self::TooManyRequests,
"Internal service failure" => Self::InternalServerError,
_ => return Err(()),
})
}
}