blockchain: subscriptions API refactoring #3281
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AliceInHunterland
requested review from
AnnaShaleva and
roman-khimov
as code owners
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #3281 +/- ##
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+ Coverage 85.14% 85.22% +0.07%
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Files 327 327
Lines 44437 44412 -25
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+ Hits 37836 37850 +14
+ Misses 5098 5057 -41
- Partials 1503 1505 +2 ☔ View full report in Codecov by Sentry. |
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There is no need to accept rw channel. Strengthening the type to send-only will allow the caller to ensure control of reading from the provided channel. Closes #2885 Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
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| func (bc *Blockchain) UnsubscribeFromBlocks(ch chan *block.Block) { | ||
| unsubloop: | ||
| for { | ||
| select { | ||
| case <-ch: | ||
| case bc.unsubCh <- ch: | ||
| break unsubloop | ||
| } | ||
| } | ||
| func (bc *Blockchain) UnsubscribeFromBlocks(ch chan<- *block.Block) { | ||
| bc.unsubCh <- ch |
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OK, that's the case @roman-khimov told about in #2884 (comment). We can't remove this unsubloop code, because starting from the unsubscription moment all data sent to this channel should be discarded.
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Since unsubscription interface doesn't allow send-only channel to be passed as an argument ( |
make (Blockchain).SubscribeFor arguments
chan<-as a send-only channel. Originally #2884