jochen
be92762969
The live tests reached one shared bus and assert, read and remove the mesh's own objects by their fixed names, so packages run in parallel deleted what each other read and the suite passed only one package at a time; a red suite read as noise. internal/testbus starts a server per test, linked in at the nats-server release go.mod pins, and a test holds that pin to the catalogue's bus image and to the facts snapshot's bus when there is one, so the tests never run a bus the mesh does not. The waiter test read a timing (the most connections held at one look) and now reads the state it means (the fewest held across the wait). make check runs the packages in parallel under the race detector, with a timeout.
81 lines
2.3 KiB
Go
81 lines
2.3 KiB
Go
// Copyright 2025 The NATS Authors
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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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package server
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import (
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"bytes"
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"time"
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)
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// SDMMeta holds pending/proposed data for subject delete markers or message removals.
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type SDMMeta struct {
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totals map[string]uint64
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pending map[uint64]SDMBySeq
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}
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// SDMBySeq holds data for a message with a specific sequence.
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type SDMBySeq struct {
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last bool // Whether the message for this sequence was the last for this subject.
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ts int64 // Last timestamp we proposed a removal/sdm.
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}
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func newSDMMeta() *SDMMeta {
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return &SDMMeta{
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totals: make(map[string]uint64, 1),
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pending: make(map[uint64]SDMBySeq, 1),
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}
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}
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// isSubjectDeleteMarker returns whether the headers indicate this message is a subject delete marker.
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// Either it's a usual marker with JSMarkerReason, or it's a KV Purge marker as the KVOperation.
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func isSubjectDeleteMarker(hdr []byte) bool {
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return len(sliceHeader(JSMarkerReason, hdr)) != 0 || bytes.Equal(sliceHeader(KVOperation, hdr), KVOperationValuePurge)
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}
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// empty clears all data.
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func (sdm *SDMMeta) empty() {
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if sdm == nil {
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return
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}
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clear(sdm.totals)
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clear(sdm.pending)
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}
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// trackPending caches the given seq and subj and whether it's the last message for that subject.
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func (sdm *SDMMeta) trackPending(seq uint64, subj string, last bool) bool {
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if p, ok := sdm.pending[seq]; ok {
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return p.last
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}
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sdm.pending[seq] = SDMBySeq{last, time.Now().UnixNano()}
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sdm.totals[subj]++
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return last
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}
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// removeSeqAndSubject clears the seq and subj from the cache.
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func (sdm *SDMMeta) removeSeqAndSubject(seq uint64, subj string) {
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if sdm == nil {
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return
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}
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if _, ok := sdm.pending[seq]; ok {
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delete(sdm.pending, seq)
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if msgs, ok := sdm.totals[subj]; ok {
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if msgs <= 1 {
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delete(sdm.totals, subj)
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} else {
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sdm.totals[subj] = msgs - 1
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}
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}
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}
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}
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