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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>
79 lines
3.2 KiB
Swift
79 lines
3.2 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 ContainerBuildIR
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import ContainerBuildSnapshotter
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import Foundation
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/// Executes unknown/custom operations using the visitor pattern.
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public struct UnknownOperationExecutor: OperationExecutor {
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public let capabilities: ExecutorCapabilities
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public init() {
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self.capabilities = ExecutorCapabilities(
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supportedOperations: [], // Doesn't declare specific operations
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maxConcurrency: 1 // Conservative default
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)
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}
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public func execute(_ operation: ContainerBuildIR.Operation, context: ExecutionContext) async throws -> ExecutionResult {
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do {
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// This executor handles operations that don't match built-in types
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// In a real implementation, this could:
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// 1. Use a plugin system
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// 2. Delegate to external executors
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// 3. Apply custom logic based on operation metadata
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let startTime = Date()
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// For now, we'll just log and return a no-op result
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print("WARNING: Executing unknown operation type: \(type(of: operation))")
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print("Operation kind: \(operation.operationKind)")
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// Use the existing snapshot
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let snapshot =
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try context.latestSnapshot()
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?? ContainerBuildSnapshotter.Snapshot(
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digest: Digest(algorithm: .sha256, bytes: Data(count: 32)),
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size: 0
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)
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let duration = Date().timeIntervalSince(startTime)
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return ExecutionResult(
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filesystemChanges: .empty,
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snapshot: snapshot,
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duration: duration,
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output: ExecutionOutput(
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stdout: "Executed unknown operation: \(operation.operationKind)\n"
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)
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)
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} catch {
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throw ExecutorError(
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type: .executionFailed,
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context: ExecutorError.ErrorContext(
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operation: operation, underlyingError: error, diagnostics: ExecutorError.Diagnostics(environment: [:], workingDirectory: "", recentLogs: [])))
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}
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}
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public func canExecute(_ operation: ContainerBuildIR.Operation) -> Bool {
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// This executor can handle any operation as a fallback
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// In practice, you might want to check for specific metadata
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// or operation kinds that indicate custom operations
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true
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}
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}
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