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987ad11c90
This was missed from #7183, likely because `eprint!` is used instead of `eprintln!`. Signed-off-by: Bo Chen <bchen@crusoe.ai>
47 lines
1.5 KiB
Rust
47 lines
1.5 KiB
Rust
// Copyright © 2025 Cyberus Technology GmbH
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//
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// SPDX-License-Identifier: Apache-2.0
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use std::error::Error;
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use log::error;
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/// Prints a chain of errors to the user in a consistent manner.
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/// The user will see a clear chain of errors, followed by debug output
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/// for opening issues.
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pub fn cli_print_error_chain<'a>(
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top_error: &'a (dyn Error + 'static),
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component: &str,
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// Function optionally returning the display representation of an error.
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display_modifier: impl Fn(
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/* level */ usize,
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/*indention */ usize,
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&'a (dyn Error + 'static),
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) -> Option<String>,
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) {
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let msg = format!("Error: {component} exited with the following");
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if top_error.source().is_none() {
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error!("{msg} error:");
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error!(" {top_error}");
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} else {
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error!("{msg} chain of errors:");
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std::iter::successors(Some(top_error), |sub_error| {
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// Dereference necessary to mitigate rustc compiler bug.
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// See <https://github.com/rust-lang/rust/issues/141673>
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(*sub_error).source()
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})
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.enumerate()
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.for_each(|(level, error)| {
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// Special case: handling of HTTP Server responses in ch-remote
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if let Some(message) = display_modifier(level, 2, error) {
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error!("{message}");
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} else {
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error!(" {level}: {error}");
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}
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});
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}
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error!("");
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error!("Debug Info: {top_error:?}");
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}
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