Files
mesh-controller/vendor/github.com/nats-io/nats-server/v2/server/stree/util.go
T
jochen be92762969 Give every test a bus of its own, at the release the mesh runs (hq ADR 0237)
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.
2026-10-06 21:17:02 +02:00

58 lines
1.4 KiB
Go

// Copyright 2023-2025 The NATS Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package stree
// For subject matching.
const (
pwc = '*'
fwc = '>'
tsep = '.'
)
// Determine index of common prefix. No match at all is 0, etc.
func commonPrefixLen(s1, s2 []byte) int {
limit := min(len(s1), len(s2))
var i int
for ; i < limit; i++ {
if s1[i] != s2[i] {
break
}
}
return i
}
// Helper to copy bytes.
func copyBytes(src []byte) []byte {
if len(src) == 0 {
return nil
}
dst := make([]byte, len(src))
copy(dst, src)
return dst
}
type position interface{ int | uint16 }
// No pivot available.
const noPivot = byte(127)
// Can return 127 (DEL) if we have all the subject as prefixes.
// We used to use 0, but when that was in the subject would cause infinite recursion in some situations.
func pivot[N position](subject []byte, pos N) byte {
if int(pos) >= len(subject) {
return noPivot
}
return subject[pos]
}