Method resolve_sequence

atomic-cli/src/commands/change/command.rs:233–261

Resolve a sequence number to a hash.

(&self, repo: &Repository, view_name: &str, seq: u64)

    /// Resolve a sequence number to a hash.
    fn resolve_sequence(&self, repo: &Repository, view_name: &str, seq: u64) -> CliResult<Hash> {
        let txn = repo
            .pristine()
            .read_txn()
            .map_err(|e| CliError::Internal(anyhow::anyhow!("{}", e)))?;

        let view = txn
            .get_view(view_name)
            .map_err(|e| CliError::Internal(anyhow::anyhow!("{}", e)))?
            .ok_or_else(|| CliError::ViewNotFound {
                name: view_name.to_string(),
            })?;

        let entry = get_change_at_sequence(&txn, &view, seq).map_err(|e| match e {
            atomic_repository::history::HistoryError::SequenceOutOfRange { sequence, max } => {
                CliError::InvalidArgument {
                    message: format!(
                        "Sequence {} out of range. View has {} changes (0-{}).",
                        sequence,
                        max + 1,
                        max
                    ),
                }
            }
            other => CliError::Internal(anyhow::anyhow!("{}", other)),
        })?;

        Ok(entry.hash)
    }

    /// Get the most recent change on the view.
    fn get_latest_change(&self, repo: &Repository, view_name: &str) -> CliResult<(Hash, u64)> {