Update health chains (#740)

2025-11-05 13:06:05 +04:00
parent 35fa52a01e
commit 63d61699b2
13 changed files with 372 additions and 154 deletions
--- a/src/main/kotlin/io/emeraldpay/dshackle/config/HealthConfig.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/config/HealthConfig.kt
@@ -16,8 +16,13 @@
 package io.emeraldpay.dshackle.config

 import io.emeraldpay.dshackle.Chain
+import java.util.concurrent.atomic.AtomicReference

-class HealthConfig {
+class HealthConfig() {
+
+    constructor(newChains: Map<Chain, ChainConfig>) : this() {
+        updateChains(newChains)
+    }

    companion object {
        fun default(): HealthConfig {
@@ -28,14 +33,28 @@ class HealthConfig {
    var port: Int = 8082
    var host: String = "127.0.0.1"
    var path: String = "/health"
-    val chains = HashMap<Chain, ChainConfig>()
+    private val chains = AtomicReference<Map<Chain, ChainConfig>>(HashMap<Chain, ChainConfig>())

    fun isEnabled(): Boolean {
-        return chains.isNotEmpty()
+        return chains.get().isNotEmpty()
    }

+    fun loadChains(): Map<Chain, ChainConfig> = chains.get()
+
    fun configs(): Collection<ChainConfig> {
-        return chains.values
+        return chains.get().values
+    }
+
+    fun containsChain(chain: Chain): Boolean {
+        return chains.get().containsKey(chain)
+    }
+
+    fun config(chain: Chain): ChainConfig? {
+        return chains.get()[chain]
+    }
+
+    fun updateChains(newChains: Map<Chain, ChainConfig>) {
+        chains.set(newChains)
    }

    data class ChainConfig(
--- a/src/main/kotlin/io/emeraldpay/dshackle/config/HealthConfigReader.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/config/HealthConfigReader.kt
@@ -54,6 +54,7 @@ class HealthConfigReader : YamlConfigReader<HealthConfig>() {
        if (input == null) {
            return
        }
+        val configs = HashMap<Chain, HealthConfig.ChainConfig>()
        input.value.forEach { conf ->
            val chain = getValueAsString(conf, "chain")
                ?.let { Global.chainById(it) }
@@ -64,11 +65,12 @@ class HealthConfigReader : YamlConfigReader<HealthConfig>() {
            if (chain == Chain.UNSPECIFIED) {
                log.warn("Using UNSPECIFIED blockchain for Health Check. Always fails")
            }
-            if (healthConfig.chains.containsKey(chain)) {
+            if (healthConfig.containsChain(chain)) {
                log.warn("Duplicate Health Check config for $chain. Replace previous with new")
            }
            val minAvailable = getValueAsInt(conf, "min-available") ?: 1
-            healthConfig.chains[chain] = HealthConfig.ChainConfig(chain, minAvailable.coerceAtLeast(0))
+            configs[chain] = HealthConfig.ChainConfig(chain, minAvailable.coerceAtLeast(0))
        }
+        healthConfig.updateChains(configs)
    }
 }
--- a/src/main/kotlin/io/emeraldpay/dshackle/config/reload/HealthReloadConfigProcessor.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/config/reload/HealthReloadConfigProcessor.kt
@@ -0,0 +1,25 @@
+package io.emeraldpay.dshackle.config.reload
+
+import org.springframework.stereotype.Component
+
+@Component
+class HealthReloadConfigProcessor(
+    private val reloadConfigService: ReloadConfigService,
+) : ReloadConfigProcessor {
+    override fun reload(): Boolean {
+        val currentCfg = reloadConfigService.currentHealthConfig()
+        val newCfg = reloadConfigService.readHealthConfig()
+
+        if (currentCfg.configs().toSet() == newCfg.configs().toSet()) {
+            return false
+        }
+
+        reloadConfigService.updateHealthChains(newCfg.loadChains())
+
+        return true
+    }
+
+    override fun configType(): String {
+        return "health config"
+    }
+}
--- a/src/main/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigProcessor.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigProcessor.kt
@@ -0,0 +1,131 @@
+package io.emeraldpay.dshackle.config.reload
+
+import io.emeraldpay.dshackle.Chain
+import io.emeraldpay.dshackle.Global.Companion.chainById
+import io.emeraldpay.dshackle.config.UpstreamsConfig
+import io.emeraldpay.dshackle.foundation.ChainOptions
+import org.springframework.stereotype.Component
+import java.util.stream.Collectors
+
+interface ReloadConfigProcessor {
+    fun reload(): Boolean
+    fun configType(): String
+}
+
+@Component
+class UpstreamConfigReloadConfigProcessor(
+    private val reloadConfigService: ReloadConfigService,
+    private val reloadConfigUpstreamService: ReloadConfigUpstreamService,
+) : ReloadConfigProcessor {
+    override fun reload(): Boolean {
+        val newUpstreamsConfig = reloadConfigService.readUpstreamsConfig()
+        val currentUpstreamsConfig = reloadConfigService.currentUpstreamsConfig()
+
+        if (newUpstreamsConfig == currentUpstreamsConfig) {
+            return false
+        }
+
+        val chainsToReload = analyzeDefaultOptions(
+            currentUpstreamsConfig.defaultOptions,
+            newUpstreamsConfig.defaultOptions,
+        )
+        val upstreamsAnalyzeData = analyzeUpstreams(
+            currentUpstreamsConfig.upstreams,
+            newUpstreamsConfig.upstreams,
+        )
+
+        val upstreamsToRemove = upstreamsAnalyzeData.removed
+            .filterNot { chainsToReload.contains(it.second) }
+            .toSet()
+        val upstreamsToAdd = upstreamsAnalyzeData.added
+
+        reloadConfigService.updateUpstreamsConfig(newUpstreamsConfig)
+
+        reloadConfigUpstreamService.reloadUpstreams(chainsToReload, upstreamsToRemove, upstreamsToAdd, newUpstreamsConfig)
+
+        return true
+    }
+
+    override fun configType(): String {
+        return "upstream config"
+    }
+
+    private fun analyzeUpstreams(
+        currentUpstreams: List<UpstreamsConfig.Upstream<*>>,
+        newUpstreams: List<UpstreamsConfig.Upstream<*>>,
+    ): UpstreamAnalyzeData {
+        if (currentUpstreams == newUpstreams) {
+            return UpstreamAnalyzeData()
+        }
+        val reloaded = mutableSetOf<Pair<String, Chain>>()
+        val removed = mutableSetOf<Pair<String, Chain>>()
+        val currentUpstreamsMap = currentUpstreams.associateBy { it.id!! to chainById(it.chain) }
+        val newUpstreamsMap = newUpstreams.associateBy { it.id!! to chainById(it.chain) }
+
+        currentUpstreamsMap.forEach {
+            val newUpstream = newUpstreamsMap[it.key]
+            if (newUpstream == null) {
+                removed.add(it.key)
+            } else if (newUpstream != it.value) {
+                reloaded.add(it.key)
+            }
+        }
+
+        val added = newUpstreamsMap
+            .minus(currentUpstreamsMap.keys)
+            .mapTo(mutableSetOf()) { it.key }
+            .plus(reloaded)
+
+        return UpstreamAnalyzeData(added, removed.plus(reloaded))
+    }
+
+    private fun analyzeDefaultOptions(
+        currentDefaultOptions: List<ChainOptions.DefaultOptions>,
+        newDefaultOptions: List<ChainOptions.DefaultOptions>,
+    ): Set<Chain> {
+        val chainsToReload = mutableSetOf<Chain>()
+
+        val currentOptions = getChainOptions(currentDefaultOptions)
+        val newOptions = getChainOptions(newDefaultOptions)
+
+        if (currentOptions == newOptions) {
+            return emptySet()
+        }
+
+        val removed = mutableSetOf<Chain>()
+
+        currentOptions.forEach {
+            val newChainOption = newOptions[it.key]
+            if (newChainOption == null) {
+                removed.add(chainById(it.key))
+            } else if (newChainOption != it.value) {
+                chainsToReload.add(chainById(it.key))
+            }
+        }
+
+        val added = newOptions.minus(currentOptions.keys).map { chainById(it.key) }
+
+        return chainsToReload.plus(added).plus(removed)
+    }
+
+    private fun getChainOptions(
+        defaultOptions: List<ChainOptions.DefaultOptions>,
+    ): Map<String, List<ChainOptions.PartialOptions>> {
+        return defaultOptions.stream()
+            .flatMap { options -> options.chains?.stream()?.map { it to options.options } }
+            .collect(
+                Collectors.groupingBy(
+                    { it.first },
+                    Collectors.mapping(
+                        { it.second },
+                        Collectors.toUnmodifiableList(),
+                    ),
+                ),
+            )
+    }
+
+    private data class UpstreamAnalyzeData(
+        val added: Set<Pair<String, Chain>> = emptySet(),
+        val removed: Set<Pair<String, Chain>> = emptySet(),
+    )
+}
--- a/src/main/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigService.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigService.kt
@@ -1,7 +1,10 @@
 package io.emeraldpay.dshackle.config.reload

+import io.emeraldpay.dshackle.Chain
 import io.emeraldpay.dshackle.Config
 import io.emeraldpay.dshackle.FileResolver
+import io.emeraldpay.dshackle.config.HealthConfig
+import io.emeraldpay.dshackle.config.HealthConfigReader
 import io.emeraldpay.dshackle.config.MainConfig
 import io.emeraldpay.dshackle.config.UpstreamsConfig
 import io.emeraldpay.dshackle.config.UpstreamsConfigReader
@@ -17,12 +20,21 @@ class ReloadConfigService(
 ) {
    private val optionsReader = ChainOptionsReader()
    private val upstreamsConfigReader = UpstreamsConfigReader(fileResolver, optionsReader)
+    private val healthConfigReader = HealthConfigReader()

    fun readUpstreamsConfig() = upstreamsConfigReader.read(config.getConfigPath().inputStream())!!

    fun currentUpstreamsConfig() = mainConfig.initialConfig!!

+    fun currentHealthConfig() = mainConfig.health
+
+    fun readHealthConfig() = healthConfigReader.read(config.getConfigPath().inputStream())!!
+
    fun updateUpstreamsConfig(newConfig: UpstreamsConfig) {
        mainConfig.upstreams = newConfig
    }
+
+    fun updateHealthChains(newChains: Map<Chain, HealthConfig.ChainConfig>) {
+        mainConfig.health.updateChains(newChains)
+    }
 }
--- a/src/main/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigSetup.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigSetup.kt
@@ -1,20 +1,14 @@
 package io.emeraldpay.dshackle.config.reload

-import io.emeraldpay.dshackle.Chain
-import io.emeraldpay.dshackle.Global.Companion.chainById
-import io.emeraldpay.dshackle.config.UpstreamsConfig
-import io.emeraldpay.dshackle.foundation.ChainOptions
 import org.slf4j.LoggerFactory
 import org.springframework.stereotype.Component
 import sun.misc.Signal
 import sun.misc.SignalHandler
 import java.util.concurrent.locks.ReentrantLock
-import java.util.stream.Collectors

@Component
 class ReloadConfigSetup(
-    private val reloadConfigService: ReloadConfigService,
-    private val reloadConfigUpstreamService: ReloadConfigUpstreamService,
+    private val processors: List<ReloadConfigProcessor>,
 ) : SignalHandler {

    companion object {
@@ -43,124 +37,24 @@ class ReloadConfigSetup(
            try {
                log.info("Reloading config...")

-                if (reloadConfig()) {
-                    log.info("Config is reloaded")
-                } else {
-                    log.info("There is nothing to reload, config is the same")
+                if (processors.isEmpty()) {
+                    log.warn("No reload config processors")
+                    return
+                }
+
+                processors.forEach {
+                    if (it.reload()) {
+                        log.info("{} is reloaded", it.configType())
+                    } else {
+                        log.info("There is nothing to reload, {} is the same", it.configType())
+                    }
                }
            } finally {
+                log.info("Reloading config has been completed")
                reloadLock.unlock()
            }
        } else {
            log.warn("Reloading is in progress")
        }
    }
-
-    private fun reloadConfig(): Boolean {
-        val newUpstreamsConfig = reloadConfigService.readUpstreamsConfig()
-        val currentUpstreamsConfig = reloadConfigService.currentUpstreamsConfig()
-
-        if (newUpstreamsConfig == currentUpstreamsConfig) {
-            return false
-        }
-
-        val chainsToReload = analyzeDefaultOptions(
-            currentUpstreamsConfig.defaultOptions,
-            newUpstreamsConfig.defaultOptions,
-        )
-        val upstreamsAnalyzeData = analyzeUpstreams(
-            currentUpstreamsConfig.upstreams,
-            newUpstreamsConfig.upstreams,
-        )
-
-        val upstreamsToRemove = upstreamsAnalyzeData.removed
-            .filterNot { chainsToReload.contains(it.second) }
-            .toSet()
-        val upstreamsToAdd = upstreamsAnalyzeData.added
-
-        reloadConfigService.updateUpstreamsConfig(newUpstreamsConfig)
-
-        reloadConfigUpstreamService.reloadUpstreams(chainsToReload, upstreamsToRemove, upstreamsToAdd, newUpstreamsConfig)
-
-        return true
-    }
-
-    private fun analyzeUpstreams(
-        currentUpstreams: List<UpstreamsConfig.Upstream<*>>,
-        newUpstreams: List<UpstreamsConfig.Upstream<*>>,
-    ): UpstreamAnalyzeData {
-        if (currentUpstreams == newUpstreams) {
-            return UpstreamAnalyzeData()
-        }
-        val reloaded = mutableSetOf<Pair<String, Chain>>()
-        val removed = mutableSetOf<Pair<String, Chain>>()
-        val currentUpstreamsMap = currentUpstreams.associateBy { it.id!! to chainById(it.chain) }
-        val newUpstreamsMap = newUpstreams.associateBy { it.id!! to chainById(it.chain) }
-
-        currentUpstreamsMap.forEach {
-            val newUpstream = newUpstreamsMap[it.key]
-            if (newUpstream == null) {
-                removed.add(it.key)
-            } else if (newUpstream != it.value) {
-                reloaded.add(it.key)
-            }
-        }
-
-        val added = newUpstreamsMap
-            .minus(currentUpstreamsMap.keys)
-            .mapTo(mutableSetOf()) { it.key }
-            .plus(reloaded)
-
-        return UpstreamAnalyzeData(added, removed.plus(reloaded))
-    }
-
-    private fun analyzeDefaultOptions(
-        currentDefaultOptions: List<ChainOptions.DefaultOptions>,
-        newDefaultOptions: List<ChainOptions.DefaultOptions>,
-    ): Set<Chain> {
-        val chainsToReload = mutableSetOf<Chain>()
-
-        val currentOptions = getChainOptions(currentDefaultOptions)
-        val newOptions = getChainOptions(newDefaultOptions)
-
-        if (currentOptions == newOptions) {
-            return emptySet()
-        }
-
-        val removed = mutableSetOf<Chain>()
-
-        currentOptions.forEach {
-            val newChainOption = newOptions[it.key]
-            if (newChainOption == null) {
-                removed.add(chainById(it.key))
-            } else if (newChainOption != it.value) {
-                chainsToReload.add(chainById(it.key))
-            }
-        }
-
-        val added = newOptions.minus(currentOptions.keys).map { chainById(it.key) }
-
-        return chainsToReload.plus(added).plus(removed)
-    }
-
-    private fun getChainOptions(
-        defaultOptions: List<ChainOptions.DefaultOptions>,
-    ): Map<String, List<ChainOptions.PartialOptions>> {
-        return defaultOptions.stream()
-            .flatMap { options -> options.chains?.stream()?.map { it to options.options } }
-            .collect(
-                Collectors.groupingBy(
-                    { it.first },
-                    Collectors.mapping(
-                        { it.second },
-                        Collectors.toUnmodifiableList(),
-                    ),
-                ),
-            )
-    }
-
-    private data class UpstreamAnalyzeData(
-        val added: Set<Pair<String, Chain>> = emptySet(),
-        val removed: Set<Pair<String, Chain>> = emptySet(),
-    )
 }
--- a/src/main/kotlin/io/emeraldpay/dshackle/monitoring/HealthCheckSetup.kt
+++ b/src/main/kotlin/io/emeraldpay/dshackle/monitoring/HealthCheckSetup.kt
@@ -102,7 +102,7 @@ class HealthCheckSetup(
        val details = chains.flatMap { chain ->
            var chainUnavailable = false
            val up = multistreamHolder.getUpstream(chain)
-            val required = healthConfig.chains[chain]
+            val required = healthConfig.config(chain)
            if (!up.isAvailable()) {
                if (required != null) {
                    anyUnavailable = true
--- a/src/test/groovy/io/emeraldpay/dshackle/monitoring/HealthCheckSetupSpec.groovy
+++ b/src/test/groovy/io/emeraldpay/dshackle/monitoring/HealthCheckSetupSpec.groovy
@@ -26,11 +26,11 @@ class HealthCheckSetupSpec extends Specification {

    def "OK when meets availability - 1"() {
        setup:
-        def config = new HealthConfig().tap {
-            it.chains[Chain.ETHEREUM__MAINNET] = new HealthConfig.ChainConfig(
-                    Chain.ETHEREUM__MAINNET, 1
-            )
-        }
+        def config = new HealthConfig(
+                Collections.singletonMap(
+                        Chain.ETHEREUM__MAINNET, new HealthConfig.ChainConfig(Chain.ETHEREUM__MAINNET, 1)
+                )
+        )
        def up1 = Mock(Upstream)
        def ethereumUpstreams = Mock(Multistream)
        def multistream = Mock(MultistreamHolder)
@@ -50,11 +50,11 @@ class HealthCheckSetupSpec extends Specification {

    def "OK when meets availability - 1 - bitcoin"() {
        setup:
-        def config = new HealthConfig().tap {
-            it.chains[Chain.BITCOIN__MAINNET] = new HealthConfig.ChainConfig(
-                    Chain.BITCOIN__MAINNET, 1
-            )
-        }
+        def config = new HealthConfig(
+                Collections.singletonMap(
+                        Chain.BITCOIN__MAINNET, new HealthConfig.ChainConfig(Chain.BITCOIN__MAINNET, 1)
+                )
+        )
        def up1 = Mock(Upstream)
        def bitcoinUpstreams = Mock(Multistream)
        def multistream = Mock(MultistreamHolder)
@@ -74,11 +74,11 @@ class HealthCheckSetupSpec extends Specification {

    def "OK when meets availability - 2/3"() {
        setup:
-        def config = new HealthConfig().tap {
-            it.chains[Chain.ETHEREUM__MAINNET] = new HealthConfig.ChainConfig(
-                    Chain.ETHEREUM__MAINNET, 2
-            )
-        }
+        def config = new HealthConfig(
+                Collections.singletonMap(
+                        Chain.ETHEREUM__MAINNET, new HealthConfig.ChainConfig(Chain.ETHEREUM__MAINNET, 1)
+                )
+        )
        def up1 = Mock(Upstream)
        def up2 = Mock(Upstream)
        def up3 = Mock(Upstream)
@@ -102,11 +102,11 @@ class HealthCheckSetupSpec extends Specification {

    def "OK when doesn't meet availability - 2/3"() {
        setup:
-        def config = new HealthConfig().tap {
-            it.chains[Chain.ETHEREUM__MAINNET] = new HealthConfig.ChainConfig(
-                    Chain.ETHEREUM__MAINNET, 2
-            )
-        }
+        def config = new HealthConfig(
+                Collections.singletonMap(
+                        Chain.ETHEREUM__MAINNET, new HealthConfig.ChainConfig(Chain.ETHEREUM__MAINNET, 2)
+                )
+        )
        def up1 = Mock(Upstream)
        def up2 = Mock(Upstream)
        def up3 = Mock(Upstream)
@@ -130,11 +130,11 @@ class HealthCheckSetupSpec extends Specification {

    def "OK when meets availability - 2/3 - detailed"() {
        setup:
-        def config = new HealthConfig().tap {
-            it.chains[Chain.ETHEREUM__MAINNET] = new HealthConfig.ChainConfig(
-                    Chain.ETHEREUM__MAINNET, 2
-            )
-        }
+        def config = new HealthConfig(
+                Collections.singletonMap(
+                        Chain.ETHEREUM__MAINNET, new HealthConfig.ChainConfig(Chain.ETHEREUM__MAINNET, 1)
+                )
+        )
        def up1 = Mock(Upstream)
        def up2 = Mock(Upstream)
        def up3 = Mock(Upstream)
--- a/src/test/kotlin/io/emeraldpay/dshackle/config/reload/HealthReloadConfigProcessorTest.kt
+++ b/src/test/kotlin/io/emeraldpay/dshackle/config/reload/HealthReloadConfigProcessorTest.kt
@@ -0,0 +1,93 @@
+package io.emeraldpay.dshackle.config.reload
+
+import io.emeraldpay.dshackle.Chain
+import io.emeraldpay.dshackle.Config
+import io.emeraldpay.dshackle.FileResolver
+import io.emeraldpay.dshackle.config.HealthConfig
+import io.emeraldpay.dshackle.config.HealthConfigReader
+import io.emeraldpay.dshackle.config.MainConfig
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.mockito.kotlin.mock
+import org.mockito.kotlin.whenever
+import org.springframework.util.ResourceUtils
+import java.io.File
+
+class HealthReloadConfigProcessorTest {
+    private val fileResolver = FileResolver(File(""))
+    private val mainConfig = MainConfig()
+
+    private val config = mock<Config>()
+    private val reloadConfigService = ReloadConfigService(config, fileResolver, mainConfig)
+    private val processor = HealthReloadConfigProcessor(reloadConfigService)
+    private val healthConfigReader = HealthConfigReader()
+
+    @BeforeEach
+    fun setupTests() {
+        mainConfig.health = HealthConfig.default()
+    }
+
+    @Test
+    fun `get health processor config type`() {
+        assertThat(processor.configType()).isEqualTo("health config")
+    }
+
+    @Test
+    fun `cant reload config if they are equal`() {
+        val newConfigFile = ResourceUtils.getFile("classpath:configs/health-initial.yaml")
+        whenever(config.getConfigPath()).thenReturn(newConfigFile)
+
+        val initialConfigIs = ResourceUtils.getFile("classpath:configs/health-initial.yaml").inputStream()
+        val initialConfig = healthConfigReader.read(initialConfigIs)!!
+
+        mainConfig.health = initialConfig
+
+        val result = processor.reload()
+
+        assertThat(result).isFalse
+    }
+
+    @Test
+    fun `cant reload config if they everything is different but not blockchain list`() {
+        val newConfigFile = ResourceUtils.getFile("classpath:configs/health-changed-params.yaml")
+        whenever(config.getConfigPath()).thenReturn(newConfigFile)
+
+        val initialConfigIs = ResourceUtils.getFile("classpath:configs/health-initial.yaml").inputStream()
+        val initialConfig = healthConfigReader.read(initialConfigIs)!!
+
+        mainConfig.health = initialConfig
+
+        val result = processor.reload()
+
+        assertThat(result).isFalse
+    }
+
+    @Test
+    fun `reload health config`() {
+        val newConfigFile = ResourceUtils.getFile("classpath:configs/health-changed.yaml")
+        whenever(config.getConfigPath()).thenReturn(newConfigFile)
+
+        val initialConfigIs = ResourceUtils.getFile("classpath:configs/health-initial.yaml").inputStream()
+        val initialConfig = healthConfigReader.read(initialConfigIs)!!
+
+        mainConfig.health = initialConfig
+        assertThat(mainConfig.health.configs().toSet()).isEqualTo(
+            setOf(
+                HealthConfig.ChainConfig(Chain.BSC__MAINNET, 0),
+            ),
+        )
+
+        val reloaded = processor.reload()
+        val newChains = mainConfig.health.configs()
+
+        assertThat(reloaded).isTrue
+        assertThat(newChains.toSet()).isEqualTo(
+            setOf(
+                HealthConfig.ChainConfig(Chain.ARBITRUM__MAINNET, 5),
+                HealthConfig.ChainConfig(Chain.OPTIMISM__MAINNET, 1),
+                HealthConfig.ChainConfig(Chain.BSC__MAINNET, 1),
+            ),
+        )
+    }
+}
--- a/src/test/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigTest.kt
+++ b/src/test/kotlin/io/emeraldpay/dshackle/config/reload/ReloadConfigTest.kt
@@ -53,6 +53,20 @@ class ReloadConfigTest {
        mainConfig.upstreams = null
    }

+    @Test
+    fun `reload config and use all processors`() {
+        val firstProcessor = mock<ReloadConfigProcessor>()
+        val secondProcessor = mock<ReloadConfigProcessor>()
+        val reloadConfig = ReloadConfigSetup(listOf(firstProcessor, secondProcessor))
+
+        reloadConfig.handle(Signal("HUP"))
+
+        verify(firstProcessor).reload()
+        verify(firstProcessor).configType()
+        verify(secondProcessor).reload()
+        verify(secondProcessor).configType()
+    }
+
    @Test
    fun `reload upstreams changes`() {
        val up1 = upstream("local1")
@@ -76,7 +90,8 @@ class ReloadConfigTest {
            currentMultistreamHolder,
            configuredUpstreams,
        )
-        val reloadConfig = ReloadConfigSetup(reloadConfigService, reloadConfigUpstreamService)
+        val upstreamCfgReloadProcessor = UpstreamConfigReloadConfigProcessor(reloadConfigService, reloadConfigUpstreamService)
+        val reloadConfig = ReloadConfigSetup(listOf(upstreamCfgReloadProcessor))

        val initialConfigIs = ResourceUtils.getFile("classpath:configs/upstreams-initial.yaml").inputStream()
        val initialConfig = upstreamsConfigReader.read(initialConfigIs)!!
@@ -127,7 +142,8 @@ class ReloadConfigTest {
            currentMultistreamHolder,
            configuredUpstreams,
        )
-        val reloadConfig = ReloadConfigSetup(reloadConfigService, reloadConfigUpstreamService)
+        val upstreamCfgReloadProcessor = UpstreamConfigReloadConfigProcessor(reloadConfigService, reloadConfigUpstreamService)
+        val reloadConfig = ReloadConfigSetup(listOf(upstreamCfgReloadProcessor))
        val initialConfigIs = ResourceUtils.getFile("classpath:configs/upstreams-initial.yaml").inputStream()
        val initialConfig = upstreamsConfigReader.read(initialConfigIs)!!
        val newConfig = upstreamsConfigReader.read(newConfigFile.inputStream())!!
@@ -157,7 +173,8 @@ class ReloadConfigTest {

        val reloadConfigUpstreamService = mock<ReloadConfigUpstreamService>()

-        val reloadConfig = ReloadConfigSetup(reloadConfigService, reloadConfigUpstreamService)
+        val upstreamCfgReloadProcessor = UpstreamConfigReloadConfigProcessor(reloadConfigService, reloadConfigUpstreamService)
+        val reloadConfig = ReloadConfigSetup(listOf(upstreamCfgReloadProcessor))

        whenever(config.getConfigPath()).thenReturn(initialConfigFile)

--- a/src/test/resources/configs/health-changed-params.yaml
+++ b/src/test/resources/configs/health-changed-params.yaml
@@ -0,0 +1,7 @@
+health:
+  port: 8081
+  host: 1.0.0.0
+  path: /healtha
+  blockchains:
+    - chain: bsc
+      min-available: 0
--- a/src/test/resources/configs/health-changed.yaml
+++ b/src/test/resources/configs/health-changed.yaml
@@ -0,0 +1,11 @@
+health:
+  port: 8082
+  host: 0.0.0.0
+  path: /health
+  blockchains:
+    - chain: arbitrum
+      min-available: 5
+    - chain: bsc
+      min-available: 1
+    - chain: optimism
+      min-available: 1
--- a/src/test/resources/configs/health-initial.yaml
+++ b/src/test/resources/configs/health-initial.yaml
@@ -0,0 +1,7 @@
+health:
+  port: 8082
+  host: 0.0.0.0
+  path: /health
+  blockchains:
+    - chain: bsc
+      min-available: 0