import { withRelayClientTracing } from "@t3tools/shared/relayTracing";import * as Cause from "effect/Cause";import * as Clock from "effect/Clock";import * as Context from "effect/Context";import * as Effect from "effect/Effect";import * as Exit from "effect/Exit";import * as Fiber from "effect/Fiber";import * as Layer from "effect/Layer";import * as Option from "effect/Option";import * as Queue from "effect/Queue";import * as Ref from "effect/Ref";import * as Scope from "effect/Scope";import * as Stream from "effect/Stream";import * as SubscriptionRef from "effect/SubscriptionRef";import * as Tracer from "effect/Tracer"; import type { ConnectionCatalogEntry } from "./catalog.ts";import * as Connectivity from "./connectivity.ts";import * as ConnectionDriver from "./driver.ts";import { type ConnectionAttemptError, type ConnectionTarget, ConnectionTransientError, type NetworkStatus, type PreparedConnection, type SupervisorConnectionState,} from "./model.ts";import * as RpcSession from "../rpc/session.ts";import { safeErrorLogAttributes } from "../errors/safeLog.ts";import * as ConnectionWakeups from "./wakeups.ts"; const RETRY_DELAYS_MS = [1_000, 2_000, 4_000, 8_000, 16_000] as const;const CONNECTION_ESTABLISHMENT_TIMEOUT = "15 seconds";const CONNECTION_PROBE_TIMEOUT = "15 seconds";const BACKOFF_RESET_AFTER_MS = 30_000; interface SupervisorIntent { readonly desired: boolean; readonly network: NetworkStatus;} type SupervisorSignal = | { readonly _tag: "ConnectRequested" } | { readonly _tag: "DisconnectRequested" } | { readonly _tag: "RetryRequested" } | { readonly _tag: "NetworkChanged"; readonly network: NetworkStatus } | { readonly _tag: "Wakeup"; readonly reason: ConnectionWakeups.ConnectionWakeup }; interface PendingRetryTrace { readonly previousAttempt: Tracer.Span; readonly failureCount: number; readonly delayMs: number; readonly reason: ConnectionAttemptError["reason"];} interface TracedAttemptFailure { readonly error: ConnectionAttemptError; readonly attemptSpan: Option.Option<Tracer.Span>;} type AttemptOutcome = | { readonly _tag: "Interrupted"; readonly established: boolean; readonly stable: boolean; } | { readonly _tag: "Failure"; readonly established: boolean; readonly stable: boolean; readonly failure: TracedAttemptFailure; }; type EstablishmentEvent = | { readonly _tag: "Completed"; readonly exit: Exit.Exit< { readonly attemptSpan: Option.Option<Tracer.Span>; readonly lease: ConnectionDriver.EnvironmentConnectionLease; }, TracedAttemptFailure >; } | { readonly _tag: "Interrupted" } | { readonly _tag: "TimedOut" }; function exitUnlessInterrupted<A, E, R>( effect: Effect.Effect<A, E, R>,): Effect.Effect<Exit.Exit<A, E>, never, R> { return Effect.matchCauseEffect(effect, { onFailure: (cause) => Cause.hasInterrupts(cause) ? Effect.interrupt : Effect.succeed(Exit.failCause(cause)), onSuccess: (value) => Effect.succeed(Exit.succeed(value)), });} export interface EnvironmentSupervisorOptions { readonly initiallyDesired?: boolean;} function retryDelayMs(failureCount: number): number { return RETRY_DELAYS_MS[Math.min(failureCount, RETRY_DELAYS_MS.length - 1)] ?? 16_000;} function annotateTarget(target: ConnectionTarget) { return Effect.annotateCurrentSpan({ "environment.id": target.environmentId, "environment.label": target.label, "environment.target.kind": target._tag, });} function availableState(intent: SupervisorIntent, generation: number): SupervisorConnectionState { return { desired: false, network: intent.network, phase: "available", stage: null, attempt: 0, generation, lastFailure: null, retryAt: null, };} function offlineState( intent: SupervisorIntent, generation: number, attempt: number, lastFailure: ConnectionAttemptError | null,): SupervisorConnectionState { return { desired: true, network: intent.network, phase: "offline", stage: null, attempt, generation, lastFailure, retryAt: null, };} function connectingState( intent: SupervisorIntent, generation: number, attempt: number, lastFailure: ConnectionAttemptError | null, stage: SupervisorConnectionState["stage"] = "preparing",): SupervisorConnectionState { return { desired: true, network: intent.network, phase: "connecting", stage, attempt, generation, lastFailure, retryAt: null, };} function failureFromExit<A>( target: ConnectionTarget, exit: Exit.Exit<A, TracedAttemptFailure>, established: boolean, stable: boolean,): AttemptOutcome { if (Exit.isSuccess(exit) || Cause.hasInterruptsOnly(exit.cause)) { return { _tag: "Interrupted", established, stable }; } const typedFailure = exit.cause.reasons.find(Cause.isFailReason); if (typedFailure) { return { _tag: "Failure", established, stable, failure: typedFailure.error, }; } return { _tag: "Failure", established, stable, failure: { error: new ConnectionTransientError({ reason: "transport", detail: `${target.label} connection failed unexpectedly.`, }), attemptSpan: Option.none(), }, };} export class EnvironmentSupervisor extends Context.Service< EnvironmentSupervisor, { readonly target: ConnectionTarget; readonly state: SubscriptionRef.SubscriptionRef<SupervisorConnectionState>; readonly session: SubscriptionRef.SubscriptionRef<Option.Option<RpcSession.RpcSession>>; readonly prepared: SubscriptionRef.SubscriptionRef<Option.Option<PreparedConnection>>; readonly connect: Effect.Effect<void>; readonly disconnect: Effect.Effect<void>; readonly retryNow: Effect.Effect<void>; }>()("@t3tools/client-runtime/connection/supervisor/EnvironmentSupervisor") {} export const make = Effect.fn("EnvironmentSupervisor.make")(function* ( entry: ConnectionCatalogEntry, options?: EnvironmentSupervisorOptions,): Effect.fn.Return< EnvironmentSupervisor["Service"], never, | Connectivity.Connectivity | ConnectionDriver.ConnectionDriver | Scope.Scope | ConnectionWakeups.ConnectionWakeups> { const target = entry.target; yield* annotateTarget(target); const connectivity = yield* Connectivity.Connectivity; const driver = yield* ConnectionDriver.ConnectionDriver; const wakeups = yield* ConnectionWakeups.ConnectionWakeups; const initialIntent: SupervisorIntent = { desired: options?.initiallyDesired ?? false, network: yield* connectivity.status, }; const intent = yield* Ref.make(initialIntent); const signals = yield* Queue.unbounded<SupervisorSignal>(); const state = yield* SubscriptionRef.make<SupervisorConnectionState>( !initialIntent.desired ? availableState(initialIntent, 0) : initialIntent.network === "offline" ? offlineState(initialIntent, 0, 0, null) : connectingState(initialIntent, 0, 1, null), ); const session = yield* SubscriptionRef.make<Option.Option<RpcSession.RpcSession>>(Option.none()); const prepared = yield* SubscriptionRef.make<Option.Option<PreparedConnection>>(Option.none()); const clearLease = Effect.all( [SubscriptionRef.set(session, Option.none()), SubscriptionRef.set(prepared, Option.none())], { discard: true }, ); const setState = Effect.fn("EnvironmentSupervisor.setState")(function* ( next: SupervisorConnectionState, ) { yield* SubscriptionRef.set(state, next); }); const signal = Effect.fn("EnvironmentSupervisor.signal")(function* (next: SupervisorSignal) { yield* Queue.offer(signals, next); }); const logManagedRelayAccountChange = Effect.logInfo( "Managed relay account changed; restarting the environment connection.", ).pipe( Effect.annotateLogs({ "environment.id": target.environmentId, "environment.label": target.label, }), ); const reportProgress = Effect.fn("EnvironmentSupervisor.reportProgress")(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, progress: ConnectionDriver.ConnectionDriverProgress, ) { if ("prepared" in progress) { yield* SubscriptionRef.set(prepared, Option.some(progress.prepared)); } yield* setState( connectingState(yield* Ref.get(intent), generation, attempt, lastFailure, progress.stage), ); }); const establishConnection = Effect.fnUntraced(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, ) { return yield* driver.connect(entry, (progress) => reportProgress(attempt, generation, lastFailure, progress), ); }); const traceRelayEstablishment = ( effect: Effect.Effect< ConnectionDriver.EnvironmentConnectionLease, ConnectionAttemptError, Scope.Scope >, attempt: number, generation: number, pendingRetry: Option.Option<PendingRetryTrace>, ) => { const traced = Effect.gen(function* () { const attemptSpan = yield* Effect.currentSpan.pipe(Effect.orDie); yield* annotateTarget(target); yield* Effect.annotateCurrentSpan({ "connection.attempt": attempt, "connection.generation": generation, "connection.retry.failure_count": Option.match(pendingRetry, { onNone: () => 0, onSome: (retry) => retry.failureCount, }), }); const lease = yield* effect.pipe( Effect.mapError( (error): TracedAttemptFailure => ({ error, attemptSpan: Option.some(attemptSpan), }), ), ); return { attemptSpan: Option.some(attemptSpan), lease }; }).pipe(Effect.withSpan("relay.connection.attempt", { root: true })); return Option.match(pendingRetry, { onNone: () => traced, onSome: (retry) => traced.pipe( Effect.linkSpans(retry.previousAttempt, { "connection.retry.delay_ms": retry.delayMs, "connection.retry.reason": retry.reason, }), ), }).pipe(withRelayClientTracing); }; const establishTracedConnection = Effect.fnUntraced(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, pendingRetry: Option.Option<PendingRetryTrace>, ) { if (target._tag === "RelayConnectionTarget") { return yield* traceRelayEstablishment( establishConnection(attempt, generation, lastFailure), attempt, generation, pendingRetry, ); } return yield* establishConnection(attempt, generation, lastFailure).pipe( Effect.map((lease) => ({ attemptSpan: Option.none<Tracer.Span>(), lease, })), Effect.mapError( (error): TracedAttemptFailure => ({ error, attemptSpan: Option.none(), }), ), ); }); const waitForEstablishmentInterrupt = Effect.fnUntraced(function* () { for (;;) { const next = yield* Queue.take(signals); switch (next._tag) { case "DisconnectRequested": case "RetryRequested": return; case "NetworkChanged": if (next.network === "offline") { return; } break; case "ConnectRequested": break; case "Wakeup": if (next.reason === "credentials-changed" && target._tag === "RelayConnectionTarget") { yield* logManagedRelayAccountChange; return; } break; } } }); const monitorConnectedLease = Effect.fnUntraced(function* ( lease: ConnectionDriver.EnvironmentConnectionLease, ) { for (;;) { const next = yield* Queue.take(signals); switch (next._tag) { case "DisconnectRequested": case "RetryRequested": return; case "NetworkChanged": if (next.network === "offline") { return; } break; case "Wakeup": if (next.reason === "credentials-changed" && target._tag === "RelayConnectionTarget") { yield* logManagedRelayAccountChange; return; } if (next.reason === "application-active") { const probe = yield* lease.session.probe.pipe( Effect.timeoutOrElse({ duration: CONNECTION_PROBE_TIMEOUT, orElse: () => Effect.fail( new ConnectionTransientError({ reason: "timeout", detail: `${target.label} did not respond to a connection health check.`, }), ), }), Effect.forkChild, ); for (;;) { const probeEvent = yield* Effect.raceFirst( Fiber.await(probe).pipe( Effect.map((exit) => ({ _tag: "ProbeCompleted" as const, exit })), ), Queue.take(signals).pipe( Effect.map((signal) => ({ _tag: "Signal" as const, signal })), ), ); if (probeEvent._tag === "ProbeCompleted") { yield* probeEvent.exit; break; } switch (probeEvent.signal._tag) { case "DisconnectRequested": case "RetryRequested": yield* Fiber.interrupt(probe); return; case "NetworkChanged": if (probeEvent.signal.network === "offline") { yield* Fiber.interrupt(probe); return; } break; case "ConnectRequested": case "Wakeup": break; } } } break; case "ConnectRequested": break; } } }); const runAttempt = Effect.fnUntraced(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, pendingRetry: Option.Option<PendingRetryTrace>, ) { yield* SubscriptionRef.set(prepared, Option.none()); const establishment = yield* Effect.raceAllFirst([ exitUnlessInterrupted( establishTracedConnection(attempt, generation, lastFailure, pendingRetry), ).pipe( Effect.map( (exit): EstablishmentEvent => ({ _tag: "Completed", exit, }), ), ), waitForEstablishmentInterrupt().pipe(Effect.as<EstablishmentEvent>({ _tag: "Interrupted" })), Effect.sleep(CONNECTION_ESTABLISHMENT_TIMEOUT).pipe( Effect.as<EstablishmentEvent>({ _tag: "TimedOut" }), ), ]); if (establishment._tag === "Interrupted") { return { _tag: "Interrupted", established: false, stable: false, } satisfies AttemptOutcome; } if (establishment._tag === "TimedOut") { return { _tag: "Failure", established: false, stable: false, failure: { error: new ConnectionTransientError({ reason: "timeout", detail: `${target.label} did not respond during connection setup.`, }), attemptSpan: Option.none(), }, } satisfies AttemptOutcome; }Lines 1–500 of 730. 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import { withRelayClientTracing } from "@t3tools/shared/relayTracing"; import * as Cause from "effect/Cause"; import * as Clock from "effect/Clock"; import * as Context from "effect/Context"; import * as Effect from "effect/Effect"; import * as Exit from "effect/Exit"; import * as Fiber from "effect/Fiber"; import * as Layer from "effect/Layer"; import * as Option from "effect/Option"; import * as Queue from "effect/Queue"; import * as Ref from "effect/Ref"; import * as Scope from "effect/Scope"; import * as Stream from "effect/Stream"; import * as SubscriptionRef from "effect/SubscriptionRef"; import * as Tracer from "effect/Tracer"; import type { ConnectionCatalogEntry } from "./catalog.ts"; import * as Connectivity from "./connectivity.ts"; import * as ConnectionDriver from "./driver.ts"; import { type ConnectionAttemptError, type ConnectionTarget, ConnectionTransientError, type NetworkStatus, type PreparedConnection, type SupervisorConnectionState, } from "./model.ts"; import * as RpcSession from "../rpc/session.ts"; import { safeErrorLogAttributes } from "../errors/safeLog.ts"; import * as ConnectionWakeups from "./wakeups.ts"; const RETRY_DELAYS_MS = [1_000, 2_000, 4_000, 8_000, 16_000] as const; const CONNECTION_ESTABLISHMENT_TIMEOUT = "15 seconds"; const CONNECTION_PROBE_TIMEOUT = "15 seconds"; const BACKOFF_RESET_AFTER_MS = 30_000; interface SupervisorIntent { readonly desired: boolean; readonly network: NetworkStatus; } type SupervisorSignal = | { readonly _tag: "ConnectRequested" } | { readonly _tag: "DisconnectRequested" } | { readonly _tag: "RetryRequested" } | { readonly _tag: "NetworkChanged"; readonly network: NetworkStatus } | { readonly _tag: "Wakeup"; readonly reason: ConnectionWakeups.ConnectionWakeup }; interface PendingRetryTrace { readonly previousAttempt: Tracer.Span; readonly failureCount: number; readonly delayMs: number; readonly reason: ConnectionAttemptError["reason"]; } interface TracedAttemptFailure { readonly error: ConnectionAttemptError; readonly attemptSpan: Option.Option<Tracer.Span>; } type AttemptOutcome = | { readonly _tag: "Interrupted"; readonly established: boolean; readonly stable: boolean; } | { readonly _tag: "Failure"; readonly established: boolean; readonly stable: boolean; readonly failure: TracedAttemptFailure; }; type EstablishmentEvent = | { readonly _tag: "Completed"; readonly exit: Exit.Exit< { readonly attemptSpan: Option.Option<Tracer.Span>; readonly lease: ConnectionDriver.EnvironmentConnectionLease; }, TracedAttemptFailure >; } | { readonly _tag: "Interrupted" } | { readonly _tag: "TimedOut" }; function exitUnlessInterrupted<A, E, R>( effect: Effect.Effect<A, E, R>, ): Effect.Effect<Exit.Exit<A, E>, never, R> { return Effect.matchCauseEffect(effect, { onFailure: (cause) => Cause.hasInterrupts(cause) ? Effect.interrupt : Effect.succeed(Exit.failCause(cause)), onSuccess: (value) => Effect.succeed(Exit.succeed(value)), }); } export interface EnvironmentSupervisorOptions { readonly initiallyDesired?: boolean; } function retryDelayMs(failureCount: number): number { return RETRY_DELAYS_MS[Math.min(failureCount, RETRY_DELAYS_MS.length - 1)] ?? 16_000; } function annotateTarget(target: ConnectionTarget) { return Effect.annotateCurrentSpan({ "environment.id": target.environmentId, "environment.label": target.label, "environment.target.kind": target._tag, }); } function availableState(intent: SupervisorIntent, generation: number): SupervisorConnectionState { return { desired: false, network: intent.network, phase: "available", stage: null, attempt: 0, generation, lastFailure: null, retryAt: null, }; } function offlineState( intent: SupervisorIntent, generation: number, attempt: number, lastFailure: ConnectionAttemptError | null, ): SupervisorConnectionState { return { desired: true, network: intent.network, phase: "offline", stage: null, attempt, generation, lastFailure, retryAt: null, }; } function connectingState( intent: SupervisorIntent, generation: number, attempt: number, lastFailure: ConnectionAttemptError | null, stage: SupervisorConnectionState["stage"] = "preparing", ): SupervisorConnectionState { return { desired: true, network: intent.network, phase: "connecting", stage, attempt, generation, lastFailure, retryAt: null, }; } function failureFromExit<A>( target: ConnectionTarget, exit: Exit.Exit<A, TracedAttemptFailure>, established: boolean, stable: boolean, ): AttemptOutcome { if (Exit.isSuccess(exit) || Cause.hasInterruptsOnly(exit.cause)) { return { _tag: "Interrupted", established, stable }; } const typedFailure = exit.cause.reasons.find(Cause.isFailReason); if (typedFailure) { return { _tag: "Failure", established, stable, failure: typedFailure.error, }; } return { _tag: "Failure", established, stable, failure: { error: new ConnectionTransientError({ reason: "transport", detail: `${target.label} connection failed unexpectedly.`, }), attemptSpan: Option.none(), }, }; } export class EnvironmentSupervisor extends Context.Service< EnvironmentSupervisor, { readonly target: ConnectionTarget; readonly state: SubscriptionRef.SubscriptionRef<SupervisorConnectionState>; readonly session: SubscriptionRef.SubscriptionRef<Option.Option<RpcSession.RpcSession>>; readonly prepared: SubscriptionRef.SubscriptionRef<Option.Option<PreparedConnection>>; readonly connect: Effect.Effect<void>; readonly disconnect: Effect.Effect<void>; readonly retryNow: Effect.Effect<void>; } >()("@t3tools/client-runtime/connection/supervisor/EnvironmentSupervisor") {} export const make = Effect.fn("EnvironmentSupervisor.make")(function* ( entry: ConnectionCatalogEntry, options?: EnvironmentSupervisorOptions, ): Effect.fn.Return< EnvironmentSupervisor["Service"], never, | Connectivity.Connectivity | ConnectionDriver.ConnectionDriver | Scope.Scope | ConnectionWakeups.ConnectionWakeups > { const target = entry.target; yield* annotateTarget(target); const connectivity = yield* Connectivity.Connectivity; const driver = yield* ConnectionDriver.ConnectionDriver; const wakeups = yield* ConnectionWakeups.ConnectionWakeups; const initialIntent: SupervisorIntent = { desired: options?.initiallyDesired ?? false, network: yield* connectivity.status, }; const intent = yield* Ref.make(initialIntent); const signals = yield* Queue.unbounded<SupervisorSignal>(); const state = yield* SubscriptionRef.make<SupervisorConnectionState>( !initialIntent.desired ? availableState(initialIntent, 0) : initialIntent.network === "offline" ? offlineState(initialIntent, 0, 0, null) : connectingState(initialIntent, 0, 1, null), ); const session = yield* SubscriptionRef.make<Option.Option<RpcSession.RpcSession>>(Option.none()); const prepared = yield* SubscriptionRef.make<Option.Option<PreparedConnection>>(Option.none()); const clearLease = Effect.all( [SubscriptionRef.set(session, Option.none()), SubscriptionRef.set(prepared, Option.none())], { discard: true }, ); const setState = Effect.fn("EnvironmentSupervisor.setState")(function* ( next: SupervisorConnectionState, ) { yield* SubscriptionRef.set(state, next); }); const signal = Effect.fn("EnvironmentSupervisor.signal")(function* (next: SupervisorSignal) { yield* Queue.offer(signals, next); }); const logManagedRelayAccountChange = Effect.logInfo( "Managed relay account changed; restarting the environment connection.", ).pipe( Effect.annotateLogs({ "environment.id": target.environmentId, "environment.label": target.label, }), ); const reportProgress = Effect.fn("EnvironmentSupervisor.reportProgress")(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, progress: ConnectionDriver.ConnectionDriverProgress, ) { if ("prepared" in progress) { yield* SubscriptionRef.set(prepared, Option.some(progress.prepared)); } yield* setState( connectingState(yield* Ref.get(intent), generation, attempt, lastFailure, progress.stage), ); }); const establishConnection = Effect.fnUntraced(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, ) { return yield* driver.connect(entry, (progress) => reportProgress(attempt, generation, lastFailure, progress), ); }); const traceRelayEstablishment = ( effect: Effect.Effect< ConnectionDriver.EnvironmentConnectionLease, ConnectionAttemptError, Scope.Scope >, attempt: number, generation: number, pendingRetry: Option.Option<PendingRetryTrace>, ) => { const traced = Effect.gen(function* () { const attemptSpan = yield* Effect.currentSpan.pipe(Effect.orDie); yield* annotateTarget(target); yield* Effect.annotateCurrentSpan({ "connection.attempt": attempt, "connection.generation": generation, "connection.retry.failure_count": Option.match(pendingRetry, { onNone: () => 0, onSome: (retry) => retry.failureCount, }), }); const lease = yield* effect.pipe( Effect.mapError( (error): TracedAttemptFailure => ({ error, attemptSpan: Option.some(attemptSpan), }), ), ); return { attemptSpan: Option.some(attemptSpan), lease }; }).pipe(Effect.withSpan("relay.connection.attempt", { root: true })); return Option.match(pendingRetry, { onNone: () => traced, onSome: (retry) => traced.pipe( Effect.linkSpans(retry.previousAttempt, { "connection.retry.delay_ms": retry.delayMs, "connection.retry.reason": retry.reason, }), ), }).pipe(withRelayClientTracing); }; const establishTracedConnection = Effect.fnUntraced(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, pendingRetry: Option.Option<PendingRetryTrace>, ) { if (target._tag === "RelayConnectionTarget") { return yield* traceRelayEstablishment( establishConnection(attempt, generation, lastFailure), attempt, generation, pendingRetry, ); } return yield* establishConnection(attempt, generation, lastFailure).pipe( Effect.map((lease) => ({ attemptSpan: Option.none<Tracer.Span>(), lease, })), Effect.mapError( (error): TracedAttemptFailure => ({ error, attemptSpan: Option.none(), }), ), ); }); const waitForEstablishmentInterrupt = Effect.fnUntraced(function* () { for (;;) { const next = yield* Queue.take(signals); switch (next._tag) { case "DisconnectRequested": case "RetryRequested": return; case "NetworkChanged": if (next.network === "offline") { return; } break; case "ConnectRequested": break; case "Wakeup": if (next.reason === "credentials-changed" && target._tag === "RelayConnectionTarget") { yield* logManagedRelayAccountChange; return; } break; } } }); const monitorConnectedLease = Effect.fnUntraced(function* ( lease: ConnectionDriver.EnvironmentConnectionLease, ) { for (;;) { const next = yield* Queue.take(signals); switch (next._tag) { case "DisconnectRequested": case "RetryRequested": return; case "NetworkChanged": if (next.network === "offline") { return; } break; case "Wakeup": if (next.reason === "credentials-changed" && target._tag === "RelayConnectionTarget") { yield* logManagedRelayAccountChange; return; } if (next.reason === "application-active") { const probe = yield* lease.session.probe.pipe( Effect.timeoutOrElse({ duration: CONNECTION_PROBE_TIMEOUT, orElse: () => Effect.fail( new ConnectionTransientError({ reason: "timeout", detail: `${target.label} did not respond to a connection health check.`, }), ), }), Effect.forkChild, ); for (;;) { const probeEvent = yield* Effect.raceFirst( Fiber.await(probe).pipe( Effect.map((exit) => ({ _tag: "ProbeCompleted" as const, exit })), ), Queue.take(signals).pipe( Effect.map((signal) => ({ _tag: "Signal" as const, signal })), ), ); if (probeEvent._tag === "ProbeCompleted") { yield* probeEvent.exit; break; } switch (probeEvent.signal._tag) { case "DisconnectRequested": case "RetryRequested": yield* Fiber.interrupt(probe); return; case "NetworkChanged": if (probeEvent.signal.network === "offline") { yield* Fiber.interrupt(probe); return; } break; case "ConnectRequested": case "Wakeup": break; } } } break; case "ConnectRequested": break; } } }); const runAttempt = Effect.fnUntraced(function* ( attempt: number, generation: number, lastFailure: ConnectionAttemptError | null, pendingRetry: Option.Option<PendingRetryTrace>, ) { yield* SubscriptionRef.set(prepared, Option.none()); const establishment = yield* Effect.raceAllFirst([ exitUnlessInterrupted( establishTracedConnection(attempt, generation, lastFailure, pendingRetry), ).pipe( Effect.map( (exit): EstablishmentEvent => ({ _tag: "Completed", exit, }), ), ), waitForEstablishmentInterrupt().pipe(Effect.as<EstablishmentEvent>({ _tag: "Interrupted" })), Effect.sleep(CONNECTION_ESTABLISHMENT_TIMEOUT).pipe( Effect.as<EstablishmentEvent>({ _tag: "TimedOut" }), ), ]); if (establishment._tag === "Interrupted") { return { _tag: "Interrupted", established: false, stable: false, } satisfies AttemptOutcome; } if (establishment._tag === "TimedOut") { return { _tag: "Failure", established: false, stable: false, failure: { error: new ConnectionTransientError({ reason: "timeout", detail: `${target.label} did not respond during connection setup.`, }), attemptSpan: Option.none(), }, } satisfies AttemptOutcome; }