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Fix panic in startingSequenceForSources (#4035)

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startingSequenceForSources had a potential panic at
`ssi.External.ApiPrefix`.
This checks if `External is not nil before matching its ApiPrefix.

cc @jnmoyne 

 Signed-off-by: Tomasz Pietrek <tomasz@nats.io>
This commit is contained in:
Derek Collison
2023-04-07 08:45:42 -07:00
committed by GitHub
parent ce0d8514be 5715918ad1
commit 51bb1741ef
1 changed files with 1 additions and 1 deletions
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2
server/stream.go
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@@ -3031,7 +3031,7 @@ func (mset *stream) startingSequenceForSources() {
streamName, iName, sSeq := streamAndSeq(string(ss))
if iName == _EMPTY_ { // Pre-2.10 message header means it's a match for any source using that stream name
for _, ssi := range mset.cfg.Sources {
if streamName == ssi.Name || streamName == ssi.Name+":"+getHash(ssi.External.ApiPrefix) {
if streamName == ssi.Name || (ssi.External != nil && streamName == ssi.Name+":"+getHash(ssi.External.ApiPrefix)) {
update(ssi.iname, sSeq)
}
}