Dashboard › opencode › Distillation
5bf5d326-7f5f-4144-9382-57e58b7c2065["lore_tm_v1_GpQPfIv1KO32VwZnqq1kWfyS5Leoqa5hWBgNq-Vncl8","lore_tm_v1_R3c87KnGWFAZ8h0f4akjvYnu4KB9bl8Sqo3njJEFSww","lore_tm_v1_Yl2OsOmpZyJIpTMBjb_3rb0rmlxSTzmGliJw-AkM3p8","lore_tm_v1_jjY4_1_mdWx2h0VJMZYlEsN-YsgVMTuWm_zAYLflNPs","lore_tm_v1_dNNdRPIW-2qF20MLZiuE5yMcO65YIOvrv65sT77z3qg"]
Date: Sep 17, 2026
packages/core/src/session/execution/claim.ts defines SessionExecutionClaim.Claim with sessionID, executionID, and ownerID; claim matching requires all three fields plus SessionExecutionTable.expires_at > now. Lease timestamps use node wall clocks, and SESSION_EXECUTION_LEASE_MS must exceed the deployment’s maximum clock skew plus one renewal interval; execution IDs fence a node immediately after takeover.SessionExecutionClaim.update() extends expires_at by SESSION_EXECUTION_LEASE_MS and enforces phase transitions: "cancelled" only from "cancelling"; "cancelling" from anything except "cancelled"; other updates exclude both "cancelling" and "cancelled". SessionExecutionClaim.renew(), settleCancellation(), and clear() likewise require a live matching claim and die with new SessionExecutionClaim.Lost(claim) if no row is updated/deleted.SessionExecutionClaim.transaction() runs update(db, claim) before the supplied effect inside db.transaction(..., { behavior: "immediate" }), with database failures converted through Effect.orDie.packages/core/src/session/execution/local.ts creates a random process-level ownerID, computes leaseDuration from SESSION_EXECUTION_LEASE_MS, and tracks live claims in activeClaims: Map<SessionSchema.ID, SessionExecutionClaim.Claim>. A drain creates a random executionID, inserts a "ready" SessionExecutionTable row using the latest assistant-message sequence or -1, and uses .onConflictDoNothing() inside an immediate transaction.SessionExecutionLocal selects the oldest pending recovery from SessionRecoveryTable where wake_pending = true and recovery_error IS NULL, ordered by time_created then execution_id, and passes its continuation_message_id to input.run(claim, force, recoveryInputID).input.run(...) against repeated SessionExecutionClaim.renew(db, claim) calls spaced at leaseDuration / 3. On exit, successful runs clear the claim; failures inspect the current phase and preserve claims in cancellation, unsafe interruption, "unknown", or "continue" states while clearing eligible others.packages/core/src/session/execution/local.ts renews the claim and handles phases as follows: "cancelled" clears immediately; a phase other than "cancelling" dies with Interrupted Session settlement failed: ${claim.sessionID}; no assistantMessageID clears the claim; an already-completed assistant message sets phase "cancelled" and clears assistant_message_id; otherwise it publishes SessionEvent.Step.Interrupted with error { type: "unknown", message: "Provider Step outcome unknown after interruption" }, atomically committing SessionExecutionClaim.settleCancellation(...), then clears the claim.SessionExecutionLocal.interrupt(sessionID) changes an active claim to phase "cancelling", interrupts through the coordinator with settleCancellation(claim) cleanup, and concurrently renews the lease every leaseDuration / 3. A SessionExecutionClaim.Lost defect is suppressed only when no current SessionExecutionTable row remains for that session.runner.run({ ...claim, force, recoveryInputID }) under locations.get(session.location) and depends on Database.node, EventV2.node, SessionStore.node, and LocationServiceMap.node.packages/core/src/session/run-coordinator.ts defines SessionRunCoordinator.Coordinator<Key, E> with active, run, wake, and interrupt. It serializes execution per key while allowing different keys concurrently; each entry tracks done, optional owner, optional exit, pendingWake, and stopping.SessionRunCoordinator.run(key) starts a forced drain when idle, joins the existing execution when active, and waits for a stopping execution before retrying. wake(key) coalesces follow-up work via pendingWake = true, or starts a non-forced drain when idle.Deferred. interrupt(key, cleanup) marks the entry as stopping, clears the existing pending wake, interrupts its owner fiber, runs cleanup, then either removes the entry or launches a successor for work that arrived during stopping; it throws Interrupted Session execution did not settle if the owner failed to record an exit and propagates cleanup failure after internal settlement.