eth_subscribe: fix preparing filter (#635)

src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/subscribe/ConnectLogs.kt

@@ -37,6 +37,7 @@ open class ConnectLogs(
     }
 
     constructor(upstream: Multistream, scheduler: Scheduler) : this(upstream, ConnectBlockUpdates(upstream, scheduler))
+
     private val produceLogs = ProduceLogs(upstream)
 
     fun start(matcher: Selector.Matcher): Flux<LogMessage> {
@@ -65,12 +66,15 @@ open class ConnectLogs(
             logs.filter {
                 val goodAddress =
                     sortedAddresses.isEmpty() || sortedAddresses.binarySearch(it.address, ADDR_COMPARATOR) >= 0
-                val goodTopic = sortedTopics.isEmpty() || (
-                    it.topics.isNotEmpty() && sortedTopics.binarySearch(
-                        it.topics[0],
-                        TOPIC_COMPARATOR,
-                    ) >= 0
-                    )
+                val goodTopic = when {
+                    sortedTopics.isEmpty() -> true
+                    it.topics.size < sortedTopics.size -> false
+                    else -> sortedTopics.indices.all { index ->
+                        it.topics[index].let { logTopic ->
+                            sortedTopics.binarySearch(logTopic, TOPIC_COMPARATOR) >= 0
+                        }
+                    }
+                }
                 goodAddress && goodTopic
             }
         }

src/test/groovy/io/emeraldpay/dshackle/upstream/ethereum/subscribe/ConnectLogsSpec.groovy

@@ -88,6 +88,22 @@ class ConnectLogsSpec extends Specification {
             "upstream"
     )
 
+    def log5 = new LogMessage(
+            Address.from("0x63bc4a36c66c64acb3d695298d492e8c1d909d3f"),
+            BlockHash.empty(),
+            100L,
+            HexData.empty(),
+            1L,
+            [
+                    Hex32.from("0x952ba7f163c4a11628f55a4df523b3efddf252ad1be2c89b69c2b068fc378daa"),
+                    Hex32.from("0x00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640")
+            ],
+            TransactionId.from("0xb5e554178a94fd993111f2ae64cb708cb0899d7b5182024e70d5c468164a8bec"),
+            1L,
+            false,
+            "upstream"
+    )
+
     def "Filter is empty"() {
         setup:
         def connectLogs = new ConnectLogs(TestingCommons.emptyMultistream(), Schedulers.boundedElastic())
@@ -152,4 +168,26 @@ class ConnectLogsSpec extends Specification {
         act.size() == 1
         act[0] == log3
     }
+
+    def "Filter by address and two topics"() {
+        setup:
+        def connectLogs = new ConnectLogs(TestingCommons.emptyMultistream(), Schedulers.boundedElastic())
+        when:
+        def input = Flux.fromIterable([
+                log1, log2, log3, log4, log5
+        ])
+
+        def act = input.transform(connectLogs.filtered(
+                [Address.from("0x63bc4a36c66c64acb3d695298d492e8c1d909d3f")],
+                [
+                        Hex32.from("0x952ba7f163c4a11628f55a4df523b3efddf252ad1be2c89b69c2b068fc378daa"),
+                        Hex32.from("0x00000000000000000000000088e6a0c2ddd26feeb64f039a2c41296fcb3f5640"),
+                ]
+        ))
+                .collectList().block()
+
+        then:
+        act.size() == 1
+        act[0] == log5
+    }
 }