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custom ws subscriptions for vara (#334)
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20 changes: 0 additions & 20 deletions
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src/main/kotlin/io/emeraldpay/dshackle/upstream/HasEgressSubscription.kt
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41 changes: 41 additions & 0 deletions
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...main/kotlin/io/emeraldpay/dshackle/upstream/generic/subscribe/GenericPersistentConnect.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,41 @@ | ||
| /** | ||
| * Copyright (c) 2022 EmeraldPay, Inc | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.emeraldpay.dshackle.upstream.generic.subscribe | ||
|
|
||
| import io.emeraldpay.dshackle.commons.DurableFlux | ||
| import io.emeraldpay.dshackle.commons.SharedFluxHolder | ||
| import io.emeraldpay.dshackle.upstream.Selector | ||
| import io.emeraldpay.dshackle.upstream.SubscriptionConnect | ||
| import reactor.core.publisher.Flux | ||
| import java.time.Duration | ||
|
|
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| abstract class GenericPersistentConnect : SubscriptionConnect<Any> { | ||
|
|
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| private val connectionSource = DurableFlux | ||
| .newBuilder() | ||
| .using(::createConnection) | ||
| .backoffOnError(Duration.ofMillis(100), 1.5, Duration.ofSeconds(60)) | ||
| .build() | ||
| private val holder = SharedFluxHolder( | ||
| connectionSource::connect, | ||
| ) | ||
|
|
||
| override fun connect(matcher: Selector.Matcher): Flux<Any> { | ||
| return holder.get() | ||
| } | ||
|
|
||
| abstract fun createConnection(): Flux<Any> | ||
| } |
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23 changes: 23 additions & 0 deletions
23
src/main/kotlin/io/emeraldpay/dshackle/upstream/polkadot/PolkadotEgressSubscription.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| package io.emeraldpay.dshackle.upstream.polkadot | ||
|
|
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| import io.emeraldpay.dshackle.upstream.EgressSubscription | ||
| import io.emeraldpay.dshackle.upstream.Multistream | ||
| import io.emeraldpay.dshackle.upstream.Selector.Matcher | ||
| import io.emeraldpay.dshackle.upstream.calls.DefaultPolkadotMethods | ||
| import io.emeraldpay.dshackle.upstream.generic.GenericUpstream | ||
| import reactor.core.publisher.Flux | ||
| import reactor.core.scheduler.Scheduler | ||
|
|
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| class PolkadotEgressSubscription( | ||
| val upstream: Multistream, | ||
| val scheduler: Scheduler, | ||
| ) : EgressSubscription { | ||
| override fun getAvailableTopics(): List<String> { | ||
| return DefaultPolkadotMethods.subs.map { it.first } | ||
| } | ||
|
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| override fun subscribe(topic: String, params: Any?, matcher: Matcher): Flux<ByteArray> { | ||
| val up = upstream.getUpstreams().shuffled().first { matcher.matches(it) } as GenericUpstream | ||
| return up.getIngressSubscription().get<ByteArray>(topic)?.connect(matcher) ?: Flux.empty() | ||
| } | ||
| } |
35 changes: 35 additions & 0 deletions
35
src/main/kotlin/io/emeraldpay/dshackle/upstream/polkadot/PolkadotIngressSubscription.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package io.emeraldpay.dshackle.upstream.polkadot | ||
|
|
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| import io.emeraldpay.dshackle.upstream.IngressSubscription | ||
| import io.emeraldpay.dshackle.upstream.SubscriptionConnect | ||
| import io.emeraldpay.dshackle.upstream.ethereum.WsSubscriptions | ||
| import io.emeraldpay.dshackle.upstream.generic.subscribe.GenericPersistentConnect | ||
| import io.emeraldpay.dshackle.upstream.rpcclient.JsonRpcRequest | ||
| import reactor.core.publisher.Flux | ||
| import reactor.core.publisher.Mono | ||
| import java.time.Duration | ||
|
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| class PolkadotIngressSubscription(val conn: WsSubscriptions) : IngressSubscription { | ||
| override fun getAvailableTopics(): List<String> { | ||
| return emptyList() // not used now | ||
| } | ||
|
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| @Suppress("UNCHECKED_CAST") | ||
| override fun <T> get(topic: String): SubscriptionConnect<T> { | ||
| return PolkaConnect(conn, topic) as SubscriptionConnect<T> | ||
| } | ||
| } | ||
|
|
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| class PolkaConnect( | ||
| val conn: WsSubscriptions, | ||
| val topic: String, | ||
| ) : GenericPersistentConnect() { | ||
|
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| @Suppress("UNCHECKED_CAST") | ||
| override fun createConnection(): Flux<Any> { | ||
| return conn.subscribe(JsonRpcRequest(topic, listOf())) | ||
| .data | ||
| .timeout(Duration.ofSeconds(60), Mono.empty()) | ||
| .onErrorResume { Mono.empty() } as Flux<Any> | ||
| } | ||
| } |
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