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chunk, storage: add HasMulti to chunk.Store #1686

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Aug 26, 2019
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@janos janos commented Aug 22, 2019

This PR adds HasMulti method to chunk.Store. Localstore (over shed) uses a single snapshot for all Has calls, allowing checking multiple chunks availability a bit more performant.

Original Has method is not changed as it is better for checking one Chunk, than to pass only one Chunk to HasMulti.

@janos janos self-assigned this Aug 22, 2019
@janos janos requested review from acud, zelig and holisticode August 22, 2019 10:34
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minor sugg

@@ -158,6 +158,28 @@ func (f Index) Has(keyFields Item) (bool, error) {
return f.db.Has(key)
}

// HasMulti accepts multiple multiple key fields represented as Item to check if
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why do we need, on a par with put/get could just be subsumed under Has?

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The main reason is that shed.Has is better for single chunk than shed.HasMulti, as it does not require a slice and does not have the iteration, making it more performant for single chunk checks.

@janos janos merged commit f527723 into master Aug 26, 2019
@janos janos deleted the localstore-multi-has branch August 26, 2019 13:29
@zelig zelig mentioned this pull request Aug 27, 2019
26 tasks
@skylenet skylenet added this to the 0.5.0 milestone Sep 17, 2019
chadsr added a commit to chadsr/swarm that referenced this pull request Sep 23, 2019
* 'master' of github.com:ethersphere/swarm:
  pss: Modularize crypto and remove Whisper. Step 1 - isolate whisper code (ethersphere#1698)
  pss: Improve pressure backstop queue handling - no mutex (ethersphere#1695)
  cmd/swarm-snapshot: if 2 nodes to create snapshot use connectChain (ethersphere#1709)
  network: Add API for Capabilities (ethersphere#1675)
  pss: fixed flaky test that was using a global variable instead of a local one (ethersphere#1702)
  pss: Port tests to `network/simulation` (ethersphere#1682)
  storage: fix hasherstore seen check to happen when error is nil (ethersphere#1700)
  vendor: upgrade go-ethereum to 1.9.2 (ethersphere#1689)
  bzzeth: initial support for bzz-eth protocol (ethersphere#1571)
  network/stream: terminate runUpdateSyncing on peer quit (ethersphere#1696)
  all: first working SWAP version (ethersphere#1554)
  version: update to v0.5.0 unstable (ethersphere#1694)
  chunk, storage: storage with multi chunk Set method (ethersphere#1684)
  chunk, storage: add HasMulti to chunk.Store (ethersphere#1686)
  chunk, shed, storage: chunk.Store GetMulti method (ethersphere#1691)
  api, chunk: progress bar support (ethersphere#1649)
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4 participants