From 451ffdb62b43bab66188f3f7eeb2131b65415ccb Mon Sep 17 00:00:00 2001
From: Zsolt Felfoldi <zsfelfoldi@gmail.com>
Date: Wed, 6 Sep 2017 02:33:10 +0200
Subject: core/bloombits: use general filters instead of addresses and topics

---
 core/bloombits/matcher.go      | 54 ++++++++++--------------------------------
 core/bloombits/matcher_test.go |  6 ++---
 2 files changed, 15 insertions(+), 45 deletions(-)

(limited to 'core/bloombits')

diff --git a/core/bloombits/matcher.go b/core/bloombits/matcher.go
index e365fd6d0..df0967a12 100644
--- a/core/bloombits/matcher.go
+++ b/core/bloombits/matcher.go
@@ -24,7 +24,6 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/bitutil"
 	"github.com/ethereum/go-ethereum/crypto"
 )
@@ -68,8 +67,7 @@ type Retrieval struct {
 type Matcher struct {
 	sectionSize uint64 // Size of the data batches to filter on
 
-	addresses  []bloomIndexes      // Addresses the system is filtering for
-	topics     [][]bloomIndexes    // Topics the system is filtering for
+	filters    [][]bloomIndexes    // Filter the system is matching for
 	schedulers map[uint]*scheduler // Retrieval schedulers for loading bloom bits
 
 	retrievers chan chan uint       // Retriever processes waiting for bit allocations
@@ -82,7 +80,8 @@ type Matcher struct {
 
 // NewMatcher creates a new pipeline for retrieving bloom bit streams and doing
 // address and topic filtering on them.
-func NewMatcher(sectionSize uint64, addresses []common.Address, topics [][]common.Hash) *Matcher {
+func NewMatcher(sectionSize uint64, filters [][][]byte) *Matcher {
+	// Create the matcher instance
 	m := &Matcher{
 		sectionSize: sectionSize,
 		schedulers:  make(map[uint]*scheduler),
@@ -91,48 +90,25 @@ func NewMatcher(sectionSize uint64, addresses []common.Address, topics [][]commo
 		retrievals:  make(chan chan *Retrieval),
 		deliveries:  make(chan *Retrieval),
 	}
-	m.setAddresses(addresses)
-	m.setTopics(topics)
-	return m
-}
+	// Calculate the bloom bit indexes for the groups we're interested in
+	m.filters = nil
 
-// setAddresses configures the matcher to only return logs that are generated
-// from addresses that are included in the given list.
-func (m *Matcher) setAddresses(addresses []common.Address) {
-	// Calculate the bloom bit indexes for the addresses we're interested in
-	m.addresses = make([]bloomIndexes, len(addresses))
-	for i, address := range addresses {
-		m.addresses[i] = calcBloomIndexes(address.Bytes())
-	}
-	// For every bit, create a scheduler to load/download the bit vectors
-	for _, bloomIndexList := range m.addresses {
-		for _, bloomIndex := range bloomIndexList {
-			m.addScheduler(bloomIndex)
+	for _, filter := range filters {
+		bloomBits := make([]bloomIndexes, len(filter))
+		for i, clause := range filter {
+			bloomBits[i] = calcBloomIndexes(clause)
 		}
-	}
-}
-
-// setTopics configures the matcher to only return logs that have topics matching
-// the given list.
-func (m *Matcher) setTopics(topicsList [][]common.Hash) {
-	// Calculate the bloom bit indexes for the topics we're interested in
-	m.topics = nil
-
-	for _, topics := range topicsList {
-		bloomBits := make([]bloomIndexes, len(topics))
-		for i, topic := range topics {
-			bloomBits[i] = calcBloomIndexes(topic.Bytes())
-		}
-		m.topics = append(m.topics, bloomBits)
+		m.filters = append(m.filters, bloomBits)
 	}
 	// For every bit, create a scheduler to load/download the bit vectors
-	for _, bloomIndexLists := range m.topics {
+	for _, bloomIndexLists := range m.filters {
 		for _, bloomIndexList := range bloomIndexLists {
 			for _, bloomIndex := range bloomIndexList {
 				m.addScheduler(bloomIndex)
 			}
 		}
 	}
+	return m
 }
 
 // addScheduler adds a bit stream retrieval scheduler for the given bit index if
@@ -250,14 +226,10 @@ func (m *Matcher) run(begin, end uint64, buffer int, session *MatcherSession) ch
 		}
 	}()
 	// Assemble the daisy-chained filtering pipeline
-	blooms := m.topics
-	if len(m.addresses) > 0 {
-		blooms = append([][]bloomIndexes{m.addresses}, blooms...)
-	}
 	next := source
 	dist := make(chan *request, buffer)
 
-	for _, bloom := range blooms {
+	for _, bloom := range m.filters {
 		next = m.subMatch(next, dist, bloom, session)
 	}
 	// Start the request distribution
diff --git a/core/bloombits/matcher_test.go b/core/bloombits/matcher_test.go
index fc49b43b8..177e1b792 100644
--- a/core/bloombits/matcher_test.go
+++ b/core/bloombits/matcher_test.go
@@ -94,10 +94,8 @@ func testMatcherBothModes(t *testing.T, filter [][]bloomIndexes, blocks uint64,
 // number of requests made for cross validation between different modes.
 func testMatcher(t *testing.T, filter [][]bloomIndexes, blocks uint64, intermittent bool, retrievals uint32, maxReqCount int) uint32 {
 	// Create a new matcher an simulate our explicit random bitsets
-	matcher := NewMatcher(testSectionSize, nil, nil)
-
-	matcher.addresses = filter[0]
-	matcher.topics = filter[1:]
+	matcher := NewMatcher(testSectionSize, nil)
+	matcher.filters = filter
 
 	for _, rule := range filter {
 		for _, topic := range rule {
-- 
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