修雨
d0787ce8ee
Address PR #555 review: - chain: derive prev_hash from file tail under cross-process flock, drop the global .chain sidecar so per-day files stay independently verifiable and concurrent dws processes cannot fork the chain - forward: track async forwards with WaitGroup and add bounded Close(ctx) so in-flight deliveries are not dropped on process exit - actor: resolve Actor from the active runtime profile (profile-keyed cache) - observability: BuildSink returns init errors; write/forward failures reported to file log and to stderr when DWS_AUDIT_DEBUG is set - cli: reject `audit tail --lines` < 1; check CSV writer/flush errors - wire CloseAuditSink into PersistentPostRunE - add regression tests for cross-date/cross-process chain, forwarder wait/timeout, init-failure, tail validation, CSV export
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
// Copyright 2026 Alibaba Group
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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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// http://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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//go:build windows
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package audit
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import (
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"os"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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const lockfileExclusiveLock = 0x00000002
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// lockFile takes a non-blocking exclusive lock on the first byte range; returns
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// an error when another process holds it so the caller can retry with a timeout.
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func lockFile(f *os.File) error {
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ol := new(windows.Overlapped)
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return windows.LockFileEx(
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windows.Handle(f.Fd()),
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lockfileExclusiveLock|windows.LOCKFILE_FAIL_IMMEDIATELY,
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0,
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1,
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0,
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(*windows.Overlapped)(unsafe.Pointer(ol)),
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)
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}
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func unlockFile(f *os.File) {
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ol := new(windows.Overlapped)
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_ = windows.UnlockFileEx(
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windows.Handle(f.Fd()),
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0,
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1,
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0,
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(*windows.Overlapped)(unsafe.Pointer(ol)),
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)
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}
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