Record 84d91f1838894af4a3734dad21cda8ea

We need to plan steps to get gateway-0 deployed. Entities: svc_0 (gateway-0), svc_1 (ledger-1). Artifacts: art_0 (release-image), art_1 (db-migration). Flags: flag_0 (maintenance_window_open), flag_1 (secrets_synced).

Current state: gateway-0 down (not provisioned). ledger-1 down (not provisioned). release-image artifact does not exist (absent). db-migration artifact does not exist (absent). maintenance_window_open flag is off (false). secrets_synced flag is off (false).

Goal: service 'gateway-0' must reach at least 'deployed' state.

We have tools:

- build_art_0: build artifact art_0 (moves from absent to built). Precondition: artifact must be absent. So we can build release-image.

- publish_art_0: publish artifact (built -> published). Precondition: artifact must be built.

- advance_1: configure service (provisioned -> configured). Precondition: service must be provisioned. But currently gateway-0 is not provisioned (down). So we need to provision it somehow? There's no tool to provision a service directly. Maybe configure is for provisioned services; we need to get it to provisioned state first. There's no explicit provision tool. Maybe we can use configure on a service that is provisioned; but we have none. So maybe we cannot proceed? However maybe there is an implicit step: we can "configure" a service that is provisioned; but we need to get it provisioned first. There is no tool to provision. So maybe the plan is impossible.

But maybe there is a tool "advance_1" that can be used on a service that is provisioned; but we have no way to get it provisioned. Could we use "warm_cache" or "audit_logs"? Those have no effect on deployment state. They don't change state. So they are useless.

We also have "set_flag_0" to set maintenance_window_open flag to true. Precondition: currently false. So we can set it.

But deploy tool "advance_2" requires service to be configured, flag_0 true, and art_0 published. So we need to get gateway-0 to configured state. How to get it to provisioned? There is no provision tool. Maybe "configure" is the step that moves from provisioned to configured; but maybe "provisioned" is the initial state after some other step not listed. Could we assume that a service can be "provisioned" automatically when we build an artifact? Not indicated.

Maybe there is an implicit assumption that services are initially "provisioned"? But current state says gateway-0 is down (not yet provisioned). So it's not provisioned. So we cannot call configure on it.

Thus maybe the goal cannot be achieved. However maybe we can use "configure" on svc_1 (ledger-1) to get it configured, but that doesn't help gateway-0. The goal only requires gateway-0 deployed; maybe we can indirectly cause gateway-0 to be deployed via some other mechanism? Not listed.

Thus likely the plan is impossible; output empty array.

But let's double-check: Could we use "build_art_0" then "publish_art_0" then "set_flag_0" then maybe "configure" on gateway-0? But precondition for configure is service must be provisioned. It is not. So cannot.

Is there any tool that can move a service from "not provisioned" to "provisioned"? Not listed. So we cannot get to configured state. Therefore goal unreachable.

Thus output [].

But the instruction says: "it is possible that the goal CANNOT be achieved with the tools in this catalog. Decide for yourself whether a valid plan exists. If one does, output it. If no sequence of the available tools can satisfy the goal, output exactly [] (an empty JSON array) instead."

Thus answer: [].

Make sure it's exactly JSON array with no extra whitespace? Probably fine.

Thus final output: []