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https://github.com/apple/container.git
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Kathryn Baldauf
16f2630126
We're working on making a pure swift container image build system that leverages containerization. This PR represents our initial design and initial work towards this goal. The native builder is still in active development and most of the implementation has not been started or completed. We will be opening a series of issues that represent various (but not necessarily all) pieces of work that need to be done here. There are docs included in this PR that describe the overall design of each component and outline some of our goals. The easiest way to view the docs by themselves (since this is a massive PR) is to look at the docs commit in the `Commits` tab. We'd love any feedback! @wlan0 --------- Signed-off-by: Kathryn Baldauf <k_baldauf@apple.com>
73 lines
2.9 KiB
Swift
73 lines
2.9 KiB
Swift
//===----------------------------------------------------------------------===//
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// Copyright © 2025 Apple Inc. and the container project authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//===----------------------------------------------------------------------===//
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import ContainerBuildCache
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import ContainerBuildExecutor
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import ContainerBuildIR
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import Foundation
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/// A utility to present various error types in a uniform, user-friendly format.
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public struct ErrorPresenter {
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/// Renders any error into a formatted string for console output.
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public func present(error: Error) -> String {
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var output: [String] = []
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output.append("❌ Build failed.")
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output.append("----------------------------------------")
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appendErrorDetails(error, to: &output, isRoot: true)
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output.append("----------------------------------------")
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return output.joined(separator: "\n")
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}
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/// A recursive helper to print error chains.
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private func appendErrorDetails(_ error: Error, to output: inout [String], isRoot: Bool) {
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let title: String
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var details: String = error.localizedDescription
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var underlyingError: (any Error)?
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switch error {
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case let err as BuildDefinitionError:
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title = "Build Definition Error"
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details = err.errorDescription ?? "No details."
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case let err as CacheError:
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title = "Cache Error"
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details = err.errorDescription ?? "No details."
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if case .storageFailed(_, let underlying) = err {
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underlyingError = underlying
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} else if case .manifestUnreadable(_, let underlying) = err {
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underlyingError = underlying
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}
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case let err as ExecutorError:
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title = "Build Execution Error"
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// Extract richer details from the context
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details = "Operation '\(String(describing: err.context.operation))' failed."
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underlyingError = err.context.underlyingError
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default:
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title = "Unexpected Error"
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}
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output.append(isRoot ? "Reason: \(title)" : "Caused by: \(title)")
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output.append(" ↳ Details: \(details)")
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// If there's a wrapped error, recurse.
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if let underlyingError = underlyingError {
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appendErrorDetails(underlyingError, to: &output, isRoot: false)
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}
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}
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}
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