Enum Error 

#[non_exhaustive]
pub enum Error {
    Io(Error),
    Http(Error),
    Json(Error),
    Zip(ZipError),
    Header(ToStrError),
    ParseInt(ParseIntError),
    MissingHeader(String),
    Config(String),
    ManifestParse(String),
    Cache(String),
    SizeLimitExceeded {
        context: String,
        limit: u64,
        actual: Option<u64>,
    },
    IncompleteDownload {
        expected: u64,
        actual: u64,
    },
    UnsafeName(String),
    UnsupportedCacheVersion {
        found: u32,
        expected: u32,
    },
    Ecosystem(String),
    Install(String),
    Profile(String),
    BadProfile(BadProfile),
    Download {
        failed: usize,
        total: usize,
        first: String,
    },
    InvalidHeader(String),
    ExtractLimitExceeded(String),
    ChecksumMismatch {
        path: String,
        expected: u32,
        actual: u32,
    },
}

Represents all possible errors that can occur within the Thunderstore engine.

This enum is #[non_exhaustive]: new variants may be added in future releases without a breaking change, so downstream matches must include a wildcard arm.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Io(Error)

Error from the IO system.

Http(Error)

Error from HTTP operations.

Json(Error)

Error from JSON parsing.

Zip(ZipError)

Error from ZIP operations.

Header(ToStrError)

Error from header parsing.

ParseInt(ParseIntError)

Error from parsing integers.

MissingHeader(String)

Missing header in response.

Config(String)

Error from builder or configuration validation.

ManifestParse(String)

Error parsing a per-mod manifest.json.

Cache(String)

Error reading, writing, or validating the on-disk package-index cache.

Covers cache load/decode/encode, a missing cache, an incompatible or corrupt cache layout, and the integrity checks in PackageIndex::validate — which run at the cache boundary.

SizeLimitExceeded

A network body, manifest file, or decompressed payload exceeded a configured size limit.

actual is a structured field for programmatic inspection; it is deliberately not rendered in Display because thiserror cannot conditionally format an Option.

Fields

context: String

A short label for what was being read (e.g. "download body").

limit: u64

The configured byte ceiling.

actual: Option<u64>

The observed size, when known.

IncompleteDownload

A download ended before the declared number of bytes arrived.

Fields

expected: u64

The number of bytes the server declared.

actual: u64

The number of bytes actually received.

UnsafeName(String)

A download filename was unsafe (empty, absolute, or path-traversing).

UnsupportedCacheVersion

The on-disk cache was written by an incompatible version of the cache format. The client treats this as a cache miss and re-fetches.

Fields

found: u32

The format version read from the cache file.

expected: u32

The format version this build understands.

Ecosystem(String)

Error from ecosystem-schema parsing.

Install(String)

Error from install routing, e.g. a package that would escape the install root.

Profile(String)

Error from the profile layer: an invalid profile name, a malformed mods.yml/state file, or a profile operation that could not complete.

BadProfile(BadProfile)

A profile name that could not be used, from any operation that gates on layout::require_profile.

Carries the reason rather than a sentence so an operation with other failure modes, such as layout::use_profile, can still return one Error without a caller losing the ability to word the refusal itself. Renders exactly as Error::Profile did for the same refusal.

Download

One or more files in a batch download failed.

Fields

failed: usize

How many files failed.

total: usize

How many files were attempted.

first: String

The first failure’s message.

InvalidHeader(String)

A response header was present but could not be parsed, e.g. an unparseable Last-Modified value.

ExtractLimitExceeded(String)

An archive exceeded a configured extraction limit (entry count or uncompressed size), e.g. a zip bomb.

ChecksumMismatch

CRC32 verification failed while extracting an archive entry.

Fields

path: String

The archive-relative path of the entry that failed verification.

expected: u32

The CRC32 the archive recorded for the entry.

actual: u32

The CRC32 computed over the bytes actually read.

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<BadProfile> for Error

fn from(source: BadProfile) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<NotRemovable> for Error

fn from(value: NotRemovable) -> Self

Converts to this type from the input type.

impl From<ParseIntError> for Error

fn from(source: ParseIntError) -> Self

Converts to this type from the input type.

impl From<ToStrError> for Error

fn from(source: ToStrError) -> Self

Converts to this type from the input type.

impl From<ZipError> for Error

fn from(source: ZipError) -> Self

Converts to this type from the input type.