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fix(core): honor Codex input limits

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This commit is contained in:
Kit Langton 2026-07-26 17:29:43 +00:00
commit b1a61aaf55
10 changed files with 112 additions and 15 deletions
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38
packages/core/test/session-compaction.test.ts
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@ -16,11 +16,15 @@ import { SessionRunnerModel } from "@opencode-ai/core/session/runner/model"
import { SessionTable } from "@opencode-ai/core/session/sql"
import { SessionStore } from "@opencode-ai/core/session/store"
import { SessionV2 } from "@opencode-ai/core/session"
import { AgentV2 } from "@opencode-ai/core/agent"
import { Location } from "@opencode-ai/core/location"
import { Project } from "@opencode-ai/core/project"
import { ProjectTable } from "@opencode-ai/core/project/sql"
import { App } from "@opencode-ai/core/app"
import { AbsolutePath } from "@opencode-ai/core/schema"
import { Money } from "@opencode-ai/schema/money"
import { ModelV2 } from "@opencode-ai/core/model"
import { ProviderV2 } from "@opencode-ai/core/provider"
import { DateTime, Effect, Fiber, Layer, Stream } from "effect"
import { asc, eq } from "drizzle-orm"
import { testEffect } from "./lib/effect"
@ -131,6 +135,40 @@ test("compaction prompt requires the checkpoint headings in order", () => {
expect(prompt).toContain("Keep every section, even when empty.")
})
it.effect("auto compaction uses the model input limit", () =>
Effect.gen(function* () {
const compaction = yield* SessionCompaction.Service
const session = SessionV2.Info.make({
id: SessionV2.ID.make("ses_input_limit"),
projectID: Project.ID.global,
title: "Input limit",
cost: Money.USD.zero,
tokens: { input: 0, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
time: { created: DateTime.makeUnsafe(0), updated: DateTime.makeUnsafe(0) },
location: Location.Ref.make({ directory: AbsolutePath.make("/project") }),
})
const route = Model.make({
id: "codex-model",
provider: "openai",
route: OpenAIChat.route.with({ limits: { context: 400_000, input: 272_000, output: 128_000 } }),
})
const message = (input: number) =>
SessionMessage.Assistant.make({
id: SessionMessage.ID.create(),
type: "assistant",
agent: AgentV2.defaultID,
model: { id: ModelV2.ID.make("codex-model"), providerID: ProviderV2.ID.openai },
content: [],
cost: Money.USD.zero,
tokens: { input, output: 0, reasoning: 0, cache: { read: 0, write: 0 } },
time: { created: DateTime.makeUnsafe(0) },
})
expect(compaction.required({ session, model: route, cost: [], messages: [message(251_999)] })).toBe(false)
expect(compaction.required({ session, model: route, cost: [], messages: [message(252_000)] })).toBe(true)
}),
)
it.effect("manual compaction summarizes short context instead of no-op", () =>
Effect.gen(function* () {
requests = []