Enum TransactionError 

#[non_exhaustive]
pub enum TransactionError {
    Prepare {
        operation: Option<usize>,
        source: ReferenceError,
    },
    Publish {
        outcomes: Vec<RefEditOutcome>,
        source: ReferenceError,
    },
}

Failure before publication or a report of effects already made.

Self::Prepare leaves ref and log contents unchanged. Self::Publish retains exact outcomes without rollback; a reference may have advanced while its reflog append failed. Retain the outcomes in diagnostics and read fresh state before designing a retry. Replaying the same batch blindly can overwrite intervening work or duplicate log entries.

use girt::refs::{
    Expected, RefEdit, RefName, RefOutcome, ReferenceError, Reflog, Target, TransactionError,
};
use girt::{InitKind, ObjectFormat, Repository};

let directory = tempfile::tempdir()?;
let repo = Repository::init(
    ObjectFormat::Sha1,
    directory.path().join("r.git"),
    InitKind::Bare,
)?;

let refs = repo.references()?;
let name = RefName::new("refs/tags/result")?;
let id = repo.loose_objects().write_blob(b"build result")?;

let edit = RefEdit::new(
    name.clone(),
    Some(Target::Direct(id)),
    Expected::Absent,
    Reflog::Preserve,
);

let outcomes = refs.transaction(&[edit.clone()])?;
assert_eq!(outcomes[0].reference, RefOutcome::Published);
assert!(outcomes[0].logs.is_empty());

// A stale creation is refused before publication; don't replace it with Expected::Any.
assert!(matches!(
    refs.transaction(&[edit]),
    Err(TransactionError::Prepare {
        operation: Some(0),
        source: ReferenceError::Mismatch { .. },
    })
));
assert_eq!(refs.read(&name)?, Some(Target::Direct(id)));

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.

Prepare

No reference or log contents were changed. Empty directories can remain.

Fields

operation: Option<usize>

Input index when the failure belongs to one operation; otherwise a batch/lock failure.

source: ReferenceError

Validation, precondition, lock, or read failure.

Publish

Publication stopped at the first error, without rollback.

Fields

outcomes: Vec<RefEditOutcome>

Exact completed effects in caller order; later operations can have packed removals.

source: ReferenceError

Underlying error. A loose unlink after packed removal retains PackedDeleted.

Trait Implementations

impl Debug for TransactionError

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

Formats the value using the given formatter.

impl Display for TransactionError

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

Formats the value using the given formatter.

impl Error for TransactionError

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<TransactionError> for CloneFailure

fn from(source: TransactionError) -> Self

Converts to this type from the input type.

impl From<TransactionError> for Error

fn from(error: TransactionError) -> Self

Converts to this type from the input type.

impl From<TransactionError> for FetchFinishFailure

fn from(source: TransactionError) -> Self

Converts to this type from the input type.

impl From<TransactionError> for LogError

fn from(source: TransactionError) -> Self

Converts to this type from the input type.