alexion
6081e3e325
Imported as a linear vendor commit so forge rebases do not replay the upstream root tree. git-subtree-dir: third_party/pi git-subtree-split: 71023aec1546d6d677a65669c5665c0927ce0dd0
83 lines
3.2 KiB
TypeScript
83 lines
3.2 KiB
TypeScript
// One sandbox per conversation: the app records each conversation's sandbox in its own document, and the Harness
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// environment function looks it up for every tool call. Here a sandbox is a directory; a hosted product would return
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// an ExecutionEnv that runs inside the conversation's container.
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// Run from packages/durable:
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// node --conditions=source --experimental-strip-types test/examples/29-sandbox-per-conversation.ts
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import { mkdtemp, readFile, rm } from "node:fs/promises";
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import { tmpdir } from "node:os";
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import { join } from "node:path";
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import { BACKGROUND_CONTEXT } from "@earendil-works/chord/context";
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import { createModels } from "@earendil-works/pi-ai/models";
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import { fauxAssistantMessage, fauxProvider, fauxToolCall } from "@earendil-works/pi-ai/providers/faux";
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import { NodeExecutionEnv } from "../../src/env/node.ts";
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import { createRegistry, defineDoc, Harness, MemoryStorage } from "../../src/index.ts";
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import { CodingTools } from "../../src/tools/index.ts";
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const context = BACKGROUND_CONTEXT;
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// Which sandbox a conversation runs in. `fork: "initial"`: a fork gets no sandbox until the app assigns one.
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const Sandbox = defineDoc<{ path?: string }>({
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kind: "app.sandbox",
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version: 1,
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scope: "conversation",
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history: "latest",
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fork: "initial",
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initial: () => ({}),
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});
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const faux = fauxProvider();
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const models = createModels();
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models.setProvider(faux.provider);
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const note = (text: string) =>
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fauxAssistantMessage(fauxToolCall("write", { path: "note.txt", content: text }), { stopReason: "toolUse" });
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faux.setResponses([
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note("from alice"),
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fauxAssistantMessage("Saved."),
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note("from bob"),
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fauxAssistantMessage("Saved."),
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]);
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const registry = createRegistry();
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registry.install(CodingTools);
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const harness = await Harness.open(
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new MemoryStorage(),
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{
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models,
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registry,
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// Committed reads only; a conversation without a sandbox gets no environment, so its tools fail cleanly.
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env: async ({ conversationId, read }, envContext) => {
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const sandbox = await read.snapshot(Sandbox, conversationId, envContext);
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return sandbox?.path === undefined ? undefined : new NodeExecutionEnv({ cwd: sandbox.path });
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},
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},
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context,
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);
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// Each user's conversation gets a fresh sandbox in the creating commit.
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const model = { provider: "faux", modelId: "faux-1" };
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async function conversationFor(user: string) {
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const path = await mkdtemp(join(tmpdir(), `pi-durable-sandbox-${user}-`));
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const conversation = await harness.createConversation(
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{
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ownership: { kind: "ownerless" },
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agent: { model },
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init: async (tx, id) => {
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(await tx.doc(Sandbox, id)).path = path;
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},
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},
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context,
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);
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return { conversation, path };
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}
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const alice = await conversationFor("alice");
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const bob = await conversationFor("bob");
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await (await alice.conversation.submit({ type: "input", content: "Leave a note." }, context)).wait(context);
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await (await bob.conversation.submit({ type: "input", content: "Leave a note." }, context)).wait(context);
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console.log("alice's sandbox:", await readFile(join(alice.path, "note.txt"), "utf8"));
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console.log("bob's sandbox:", await readFile(join(bob.path, "note.txt"), "utf8"));
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await harness.close(context);
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await rm(alice.path, { recursive: true, force: true });
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await rm(bob.path, { recursive: true, force: true });
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