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Merge pull request #30 from emeraldpay/feat/fallback-role

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solution: fallback upstreams
This commit is contained in:
Igor Artamonov
2020-07-10 23:40:29 -04:00
committed by GitHub
parent 242c479893 3df1c0a572
commit 3a93df2e32
19 changed files with 281 additions and 34 deletions
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36
docs/04-upstream-config.adoc
View File

@@ -55,6 +55,7 @@ cluster:
key: client.p8.key
- id: infura-eth
chain: ethereum
role: fallback
labels:
provider: infura
options:
@@ -80,23 +81,38 @@ There're two main segments for upstreams configuration:
In the example above we have:
- default configuration for _Ethereum Mainnet_ which accepts upstream as valid when it not in fast synchronization mode
and has at least 10 peers.For _Kovan Testnet_ nodes the requirements are much relieved
- default configuration for _Ethereum Mainnet_ which accepts upstream as valid when it not in fast synchronization mode and has at least 10 peers.For _Kovan Testnet_ nodes the requirements are much relieved
- as upstreams it has 2 configurations
* balancer connects to another Dshackle/another machine by using gRPC protocol
** accepts (i.e. proxies) any blockchain available on that remote
** verifies TLS certificate of the server
** uses client certificate for authentication, i.e. remote server is accepting only clients authenticated by a
certificate
** uses client certificate for authentication, i.e. remote server is accepting only clients authenticated by a certificate
* connects to Infura provided _Ethereum Mainnet_
** configuration is using placeholders for `${INFURA_USER}` and `${INFURA_PASSWD}` which will be replaced with
corresponding environment variables values
** as a _fallback_ upstream, which means that it's used only if `us-nodes` fails
** configuration is using placeholders for `${INFURA_USER}` and `${INFURA_PASSWD}` which will be replaced with corresponding environment variables values
** uses Basic Authentication to authenticate requests on Infura
** label `[provider: infura]` is set for that particular upstream, which can be selected during a request.For example for
some requests you may want to use nodes with that label only, i.e. _"send that tx to infura nodes only"_,
or _"read only from archive node, with label [archive: true]"_
** label `[provider: infura]` is set for that particular upstream, which can be selected during a request.For example for some requests you may want to use nodes with that label only, i.e. _"send that tx to infura nodes only"_, or _"read only from archive node, with label [archive: true]"_
** upstream validation (peers, sync status, etc) is disabled for that particular upstream
=== Fallback upstream
By default, the Dshackle connects to each upstream in a Round-Robin basis, i.e. sequentially one by one.
But if an upstream have `role: fallback` then it's used only in additional to other (_standard_) upstreams when their responses are not enough to finalize the request.
Dshackle always starts with making requests to standard upstreams.
If all of them failed, if responses are inconsistent (ex. for `eth_getTransactionCount`), or when it needs to broadcast to wider networks (`sendrawtransaction`), then upstreams with role `fallback` are also used.
The internal request order is:
1. connect to each standard upstream
2. delay
3. try again to connect to standard upstreams
4. try to connect to fallback upstreams
Steps 2-4 are repeated until a valid response received, or timeout for the original request is reached.
In general, you set role `fallback` only to external nodes provided by a third party, when you want to use it as a last resort.
=== Configuration options
Options (default or as part of upstream config):
@@ -106,7 +122,7 @@ Options (default or as part of upstream config):
| Option | Default | Description
| `disable-validation` | false | if `true` then Dshackle will not try to verify status of the upstream (could be useful for a trusted cloud
provider such as Infura, but disabling it is not recommended for a normal node)
provider such as Infura, but disabling it is not recommended for a normal node)
| `min-peers` | 3 | specify minimum amount of connected peers, Dshackle will not use upstream with less than specified number
| `timeout` | 60 | timeout in seconds after which request to the upstream will be discarded (and may be retried on an another upstream)
|===

6
docs/reference-configuration.adoc
View File

@@ -396,6 +396,7 @@ configuration, and may be omitted for most of the situations.
----
- id: local
chain: ethereum
role: standard
labels:
fullnode: true
methods:
@@ -424,6 +425,11 @@ configuration, and may be omitted for most of the situations.
| yes
| Per-cluster identifier of an upstream
| `role`
| no
| `standard` (default) or `fallback`.
Fallback role mean that the upstream is used only after other upstreams failed or didn't return quorum
| `chain`
| yes
| Blockchain which is the provided by the upstream.

6
src/main/kotlin/io/emeraldpay/dshackle/config/UpstreamsConfig.kt
View File

@@ -74,6 +74,7 @@ class UpstreamsConfig {
var connection: T? = null
val labels = Labels()
var methods: Methods? = null
var role: UpstreamRole = UpstreamRole.STANDARD
@Suppress("unchecked")
fun <Z : UpstreamConnection> cast(type: Class<Z>): Upstream<Z> {
@@ -84,6 +85,11 @@ class UpstreamsConfig {
}
}
enum class UpstreamRole {
STANDARD,
FALLBACK
}
open class UpstreamConnection
open class RpcConnection : UpstreamConnection() {

10
src/main/kotlin/io/emeraldpay/dshackle/config/UpstreamsConfigReader.kt
View File

@@ -23,6 +23,7 @@ import org.yaml.snakeyaml.nodes.MappingNode
import org.yaml.snakeyaml.nodes.ScalarNode
import reactor.util.function.Tuples
import java.io.InputStream
import java.lang.IllegalArgumentException
import java.net.URI
import java.time.Duration
@@ -185,6 +186,15 @@ class UpstreamsConfigReader(
internal fun readUpstreamStandard(upNode: MappingNode, upstream: UpstreamsConfig.Upstream<*>) {
upstream.chain = getValueAsString(upNode, "chain")
getValueAsString(upNode, "role")?.let {
val name = it.trim()
try {
val role = UpstreamsConfig.UpstreamRole.valueOf(name.toUpperCase())
upstream.role = role
} catch (e: IllegalArgumentException) {
log.warn("Unsupported role `$name` for upstream ${upstream.id}")
}
}
if (hasAny(upNode, "labels")) {
getMapping(upNode, "labels")?.let { labels ->
labels.value.stream()

6
src/main/kotlin/io/emeraldpay/dshackle/startup/ConfiguredUpstreams.kt
View File

@@ -145,7 +145,8 @@ open class ConfiguredUpstreams(
val methods = buildMethods(config, chain)
val upstream = BitcoinUpstream(config.id
?: "bitcoin-${seq.getAndIncrement()}", chain, directApi,
options, QuorumForLabels.QuorumItem(1, config.labels),
options, config.role,
QuorumForLabels.QuorumItem(1, config.labels),
methods)
upstream.start()
@@ -183,7 +184,8 @@ open class ConfiguredUpstreams(
log.info("Using ${chain.chainName} upstream, at ${urls.joinToString()}")
val ethereumUpstream = EthereumUpstream(
config.id!!,
chain, directApi, wsFactoryApi, options,
chain, directApi, wsFactoryApi,
options, config.role,
QuorumForLabels.QuorumItem(1, config.labels),
methods
)

8
src/main/kotlin/io/emeraldpay/dshackle/upstream/DefaultUpstream.kt
View File

@@ -27,10 +27,12 @@ abstract class DefaultUpstream(
defaultLag: Long,
defaultAvail: UpstreamAvailability,
private val options: UpstreamsConfig.Options,
private val role: UpstreamsConfig.UpstreamRole,
private val targets: CallMethods?
) : Upstream {
constructor(id: String, options: UpstreamsConfig.Options, targets: CallMethods?) : this(id, Long.MAX_VALUE, UpstreamAvailability.UNAVAILABLE, options, targets)
constructor(id: String, options: UpstreamsConfig.Options, role: UpstreamsConfig.UpstreamRole, targets: CallMethods?) :
this(id, Long.MAX_VALUE, UpstreamAvailability.UNAVAILABLE, options, role, targets)
private val status = AtomicReference(Status(defaultLag, defaultAvail, statusByLag(defaultLag, defaultAvail)))
private val statusStream: TopicProcessor<UpstreamAvailability> = TopicProcessor.create()
@@ -85,6 +87,10 @@ abstract class DefaultUpstream(
return options
}
override fun getRole(): UpstreamsConfig.UpstreamRole {
return role;
}
override fun getMethods(): CallMethods {
return targets ?: throw IllegalStateException("Methods are not set")
}

52
src/main/kotlin/io/emeraldpay/dshackle/upstream/FilteredApis.kt
View File

@@ -16,9 +16,7 @@
*/
package io.emeraldpay.dshackle.upstream
import io.emeraldpay.dshackle.reader.Reader
import io.emeraldpay.dshackle.upstream.rpcclient.JsonRpcRequest
import io.emeraldpay.dshackle.upstream.rpcclient.JsonRpcResponse
import io.emeraldpay.dshackle.config.UpstreamsConfig
import org.reactivestreams.Subscriber
import reactor.core.publisher.EmitterProcessor
import reactor.core.publisher.Flux
@@ -33,13 +31,26 @@ class FilteredApis(
allUpstreams: List<Upstream>,
private val matcher: Selector.Matcher,
pos: Int,
private val repeatLimit: Long,
/**
* Limit of retries
*/
private val retryLimit: Long,
jitter: Int
) : ApiSource {
companion object {
private const val DEFAULT_DELAY_STEP = 100
private const val MAX_WAIT_MILLIS = 5000L
@JvmStatic
fun <T> startFrom(upstreams: List<T>, pos: Int): List<T> {
return if (upstreams.size <= 1 || pos == 0) {
upstreams
} else {
val safePosition = pos % upstreams.size
upstreams.subList(safePosition, upstreams.size) + upstreams.subList(0, safePosition)
}
}
}
constructor(allUpstreams: List<Upstream>,
@@ -50,7 +61,8 @@ class FilteredApis(
matcher: Selector.Matcher) : this(allUpstreams, matcher, 0, 10, 10)
private val delay: Int
private val upstreams: List<Upstream>
private val standardUpstreams: List<Upstream>
private val standardWithFallback: List<Upstream>
private val control = EmitterProcessor.create<Boolean>(32, false)
@@ -61,12 +73,20 @@ class FilteredApis(
DEFAULT_DELAY_STEP
}
upstreams = if (allUpstreams.size == 1 || pos == 0 || allUpstreams.isEmpty()) {
allUpstreams
} else {
val safePosition = pos % allUpstreams.size
allUpstreams.subList(safePosition, allUpstreams.size) + allUpstreams.subList(0, safePosition)
standardUpstreams = allUpstreams.filter {
it.getRole() == UpstreamsConfig.UpstreamRole.STANDARD
}.let {
startFrom(it, pos)
}
val fallbackUpstreams = allUpstreams.filter {
it.getRole() == UpstreamsConfig.UpstreamRole.FALLBACK
}.let {
startFrom(it, pos)
}
standardWithFallback = emptyList<Upstream>()
.plus(standardUpstreams)
.plus(fallbackUpstreams)
}
fun waitDuration(rawn: Long): Duration {
@@ -79,9 +99,15 @@ class FilteredApis(
}
override fun subscribe(subscriber: Subscriber<in Upstream>) {
val first = Flux.fromIterable(upstreams)
val retries = (1 until repeatLimit).map { r ->
Flux.fromIterable(upstreams).delaySubscription(waitDuration(r))
// initially try only standard upstreams
val first = Flux.fromIterable(standardUpstreams)
// if all failed, try both standard and fallback upstreams, repeating in cycle
val retries = (0 until (retryLimit - 1)).map { r ->
Flux.fromIterable(standardWithFallback)
// add delay to let upstream to restore if it's a temp failure
// but delay only start of the check, not between upstreams
// i.e. if all upstreams failed -> wait -> check all without waiting in between
.delaySubscription(waitDuration(r + 1))
}.let { Flux.concat(it) }
Flux.concat(first, retries)

6
src/main/kotlin/io/emeraldpay/dshackle/upstream/Multistream.kt
View File

@@ -145,10 +145,16 @@ abstract class Multistream(
else upstreams.map { it.getStatus() }.min()!!
}
//TODO options for multistream are useless
override fun getOptions(): UpstreamsConfig.Options {
return UpstreamsConfig.Options()
}
//TODO roles for multistream are useless
override fun getRole(): UpstreamsConfig.UpstreamRole {
return UpstreamsConfig.UpstreamRole.STANDARD
}
override fun getMethods(): CallMethods {
return callMethods ?: throw IllegalStateException("Methods are not initialized yet")
}

1
src/main/kotlin/io/emeraldpay/dshackle/upstream/Upstream.kt
View File

@@ -31,6 +31,7 @@ interface Upstream {
fun getHead(): Head
fun getApi(): Reader<JsonRpcRequest, JsonRpcResponse>
fun getOptions(): UpstreamsConfig.Options
fun getRole(): UpstreamsConfig.UpstreamRole
fun setLag(lag: Long)
fun getLag(): Long
fun getLabels(): Collection<UpstreamsConfig.Labels>

3
src/main/kotlin/io/emeraldpay/dshackle/upstream/bitcoin/BitcoinUpstream.kt
View File

@@ -34,9 +34,10 @@ open class BitcoinUpstream(
val chain: Chain,
private val directApi: Reader<JsonRpcRequest, JsonRpcResponse>,
options: UpstreamsConfig.Options,
role: UpstreamsConfig.UpstreamRole,
val node: QuorumForLabels.QuorumItem,
callMethods: CallMethods
) : DefaultUpstream(id, options, callMethods), Lifecycle {
) : DefaultUpstream(id, options, role, callMethods), Lifecycle {
companion object {
private val log = LoggerFactory.getLogger(BitcoinUpstream::class.java)

11
src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumUpstream.kt
View File

@@ -40,13 +40,16 @@ open class EthereumUpstream(
private val directReader: Reader<JsonRpcRequest, JsonRpcResponse>,
private val ethereumWsFactory: EthereumWsFactory? = null,
options: UpstreamsConfig.Options,
role: UpstreamsConfig.UpstreamRole,
val node: QuorumForLabels.QuorumItem,
targets: CallMethods
) : DefaultUpstream(id, options, targets), Upstream, CachesEnabled, Lifecycle {
) : DefaultUpstream(id, options, role, targets), Upstream, CachesEnabled, Lifecycle {
constructor(id: String, chain: Chain, api: Reader<JsonRpcRequest, JsonRpcResponse>) : this(id, chain, api, null,
UpstreamsConfig.Options.getDefaults(), QuorumForLabels.QuorumItem(1, UpstreamsConfig.Labels()),
DirectCallMethods())
constructor(id: String, chain: Chain, api: Reader<JsonRpcRequest, JsonRpcResponse>) :
this(id, chain, api, null,
UpstreamsConfig.Options.getDefaults(), UpstreamsConfig.UpstreamRole.STANDARD,
QuorumForLabels.QuorumItem(1, UpstreamsConfig.Labels()),
DirectCallMethods())
private val log = LoggerFactory.getLogger(EthereumUpstream::class.java)

1
src/main/kotlin/io/emeraldpay/dshackle/upstream/grpc/EthereumGrpcUpstream.kt
View File

@@ -60,6 +60,7 @@ open class EthereumGrpcUpstream(
) : DefaultUpstream(
"$parentId/${chain.chainCode}",
UpstreamsConfig.Options.getDefaults(),
UpstreamsConfig.UpstreamRole.STANDARD,
null
), Lifecycle {

36
src/test/groovy/io/emeraldpay/dshackle/config/UpstreamsConfigReaderSpec.groovy
View File

@@ -202,4 +202,40 @@ class UpstreamsConfigReaderSpec extends Specification {
where:
id << ["test", "test_test", "test-test", "test123", "test1test", "foo_bar_12"]
}
def "Parse config without fallback role"() {
setup:
def config = this.class.getClassLoader().getResourceAsStream("upstreams-basic.yaml")
when:
def act = reader.read(config)
then:
act != null
act.upstreams.size() == 2
act.upstreams.get(0).role == UpstreamsConfig.UpstreamRole.STANDARD
act.upstreams.get(1).role == UpstreamsConfig.UpstreamRole.STANDARD
}
def "Parse config with fallback role"() {
setup:
def config = this.class.getClassLoader().getResourceAsStream("upstreams-roles.yaml")
when:
def act = reader.read(config)
then:
act != null
act.upstreams.size() == 2
act.upstreams.get(0).role == UpstreamsConfig.UpstreamRole.STANDARD
act.upstreams.get(1).role == UpstreamsConfig.UpstreamRole.FALLBACK
}
def "Parse config with invalid role"() {
setup:
def config = this.class.getClassLoader().getResourceAsStream("upstreams-roles-invalid.yaml")
when:
def act = reader.read(config)
then:
act != null
act.upstreams.size() == 2
act.upstreams.get(0).role == UpstreamsConfig.UpstreamRole.STANDARD
act.upstreams.get(1).role == UpstreamsConfig.UpstreamRole.STANDARD
}
}

7
src/test/groovy/io/emeraldpay/dshackle/quorum/QuorumRpcReaderSpec.groovy
View File

@@ -15,6 +15,7 @@
*/
package io.emeraldpay.dshackle.quorum
import io.emeraldpay.dshackle.config.UpstreamsConfig
import io.emeraldpay.dshackle.reader.Reader
import io.emeraldpay.dshackle.test.TestingCommons
import io.emeraldpay.dshackle.upstream.FilteredApis
@@ -34,6 +35,7 @@ class QuorumRpcReaderSpec extends Specification {
setup:
def up = Mock(Upstream) {
_ * isAvailable() >> true
_ * getRole() >> UpstreamsConfig.UpstreamRole.STANDARD
1 * getApi() >> Mock(Reader) {
1 * read(new JsonRpcRequest("eth_test", [])) >> Mono.just(JsonRpcResponse.ok("1"))
}
@@ -60,6 +62,7 @@ class QuorumRpcReaderSpec extends Specification {
setup:
def up = Mock(Upstream) {
_ * isAvailable() >> true
_ * getRole() >> UpstreamsConfig.UpstreamRole.STANDARD
_ * getApi() >> Mock(Reader) {
2 * read(new JsonRpcRequest("eth_test", [])) >>> [
Mono.just(JsonRpcResponse.error(1, "test")),
@@ -89,6 +92,7 @@ class QuorumRpcReaderSpec extends Specification {
setup:
def up = Mock(Upstream) {
_ * isAvailable() >> true
_ * getRole() >> UpstreamsConfig.UpstreamRole.STANDARD
_ * getApi() >> Mock(Reader) {
2 * read(new JsonRpcRequest("eth_test", [])) >>> [
Mono.just(JsonRpcResponse.ok("null")),
@@ -119,6 +123,7 @@ class QuorumRpcReaderSpec extends Specification {
setup:
def up = Mock(Upstream) {
_ * isAvailable() >> true
_ * getRole() >> UpstreamsConfig.UpstreamRole.STANDARD
_ * getApi() >> Mock(Reader) {
2 * read(new JsonRpcRequest("eth_test", [])) >>> [
Mono.just(JsonRpcResponse.error(1, "test")),
@@ -148,6 +153,7 @@ class QuorumRpcReaderSpec extends Specification {
setup:
def up = Mock(Upstream) {
_ * isAvailable() >> true
_ * getRole() >> UpstreamsConfig.UpstreamRole.STANDARD
_ * getApi() >> Mock(Reader) {
3 * read(new JsonRpcRequest("eth_test", [])) >>> [
Mono.just(JsonRpcResponse.ok("null")),
@@ -178,6 +184,7 @@ class QuorumRpcReaderSpec extends Specification {
setup:
def up = Mock(Upstream) {
_ * isAvailable() >> true
_ * getRole() >> UpstreamsConfig.UpstreamRole.STANDARD
_ * getApi() >> Mock(Reader) {
3 * read(new JsonRpcRequest("eth_test", [])) >>> [
Mono.just(JsonRpcResponse.ok("null")),

9
src/test/groovy/io/emeraldpay/dshackle/test/EthereumUpstreamMock.groovy
View File

@@ -61,7 +61,9 @@ class EthereumUpstreamMock extends EthereumUpstream {
EthereumUpstreamMock(@NotNull String id, @NotNull Chain chain, @NotNull Reader<JsonRpcRequest, JsonRpcResponse> api, CallMethods methods) {
super(id, chain, api, null,
UpstreamsConfig.Options.getDefaults(), new QuorumForLabels.QuorumItem(1, new UpstreamsConfig.Labels()),
UpstreamsConfig.Options.getDefaults(),
UpstreamsConfig.UpstreamRole.STANDARD,
new QuorumForLabels.QuorumItem(1, new UpstreamsConfig.Labels()),
methods)
setLag(0)
setStatus(UpstreamAvailability.OK)
@@ -85,4 +87,9 @@ class EthereumUpstreamMock extends EthereumUpstream {
Head getHead() {
return ethereumHeadMock
}
@Override
String toString() {
return "Upstream mock ${getId()}"
}
}

4
src/test/groovy/io/emeraldpay/dshackle/test/TestingCommons.groovy
View File

@@ -43,6 +43,10 @@ class TestingCommons {
return new EthereumApiMock()
}
static EthereumUpstreamMock upstream(String id, Reader<JsonRpcRequest, JsonRpcResponse> api) {
return new EthereumUpstreamMock(id, Chain.ETHEREUM, api)
}
static EthereumUpstreamMock upstream(Reader<JsonRpcRequest, JsonRpcResponse> api) {
return new EthereumUpstreamMock(Chain.ETHEREUM, api)
}

51
src/test/groovy/io/emeraldpay/dshackle/upstream/FilteredApisSpec.groovy
View File

@@ -24,6 +24,7 @@ import io.emeraldpay.dshackle.upstream.calls.DefaultEthereumMethods
import io.emeraldpay.dshackle.upstream.ethereum.EthereumUpstream
import io.emeraldpay.dshackle.upstream.ethereum.EthereumWsFactory
import io.emeraldpay.grpc.Chain
import reactor.core.publisher.Flux
import reactor.test.StepVerifier
import spock.lang.Retry
import spock.lang.Specification
@@ -50,6 +51,7 @@ class FilteredApisSpec extends Specification {
TestingCommons.api().tap { it.id = "${i++}" },
(EthereumWsFactory) null,
new UpstreamsConfig.Options(),
UpstreamsConfig.UpstreamRole.STANDARD,
new QuorumForLabels.QuorumItem(1, UpstreamsConfig.Labels.fromMap(it)),
ethereumTargets
)
@@ -175,7 +177,52 @@ class FilteredApisSpec extends Specification {
then:
StepVerifier.create(act)
.expectNext(ups[2], ups[3], ups[4], ups[5], ups[0], ups[1])
.expectComplete()
.verify(Duration.ofSeconds(1))
.expectComplete()
.verify(Duration.ofSeconds(1))
}
def "Start with offset"() {
expect:
FilteredApis.startFrom([0, 1, 2, 3, 4], pos) == exp
where:
pos | exp
0 | [0, 1, 2, 3, 4]
1 | [1, 2, 3, 4, 0]
2 | [2, 3, 4, 0, 1]
3 | [3, 4, 0, 1, 2]
4 | [4, 0, 1, 2, 3]
5 | [0, 1, 2, 3, 4]
6 | [1, 2, 3, 4, 0]
}
def "Starts with standard"() {
setup:
List<Upstream> standard = (0..1).collect {
TestingCommons.upstream(
it.toString(),
new EthereumApiStub(it)
)
}
def fallback = [
Mock(Upstream) {
_ * getRole() >> UpstreamsConfig.UpstreamRole.FALLBACK
_ * isAvailable() >> true
}
]
when:
def act = new FilteredApis([] + fallback + standard,
Selector.empty, 0, 3, 0)
act.request(10)
then:
StepVerifier.create(act)
.expectNext(standard[0], standard[1]).as("Initial requests")
.expectNext(standard[0], standard[1]).as("Retry with standard")
.expectNext(fallback[0]).as("Retry with fallback")
.expectNext(standard[0], standard[1]).as("Second retry with standard")
.expectNext(fallback[0]).as("Second retry with fallback")
.expectComplete()
.verify(Duration.ofSeconds(1))
}
}

31
src/test/resources/upstreams-roles-invalid.yaml Normal file
View File

@@ -0,0 +1,31 @@
version: v1
defaults:
- chains:
- ethereum
options:
min-peers: 3
upstreams:
- id: local
chain: ethereum
connection:
ethereum:
rpc:
url: "http://localhost:8545"
ws:
url: "ws://localhost:8546"
origin: "http://localhost"
basic-auth:
username: 9c199ad8f281f20154fc258fe41a6814
password: 258fe4149c199ad8f2811a68f20154fc
- id: infura
chain: ethereum
role: fallbackZ
connection:
ethereum:
rpc:
url: "https://mainnet.infura.io/v3/fa28c968191849c1aff541ad1d8511f2"
basic-auth:
username: 4fc258fe41a68149c199ad8f281f2015
password: 1a68f20154fc258fe4149c199ad8f281

31
src/test/resources/upstreams-roles.yaml Normal file
View File

@@ -0,0 +1,31 @@
version: v1
defaults:
- chains:
- ethereum
options:
min-peers: 3
upstreams:
- id: local
chain: ethereum
connection:
ethereum:
rpc:
url: "http://localhost:8545"
ws:
url: "ws://localhost:8546"
origin: "http://localhost"
basic-auth:
username: 9c199ad8f281f20154fc258fe41a6814
password: 258fe4149c199ad8f2811a68f20154fc
- id: infura
chain: ethereum
role: fallback
connection:
ethereum:
rpc:
url: "https://mainnet.infura.io/v3/fa28c968191849c1aff541ad1d8511f2"
basic-auth:
username: 4fc258fe41a68149c199ad8f281f2015
password: 1a68f20154fc258fe4149c199ad8f281