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Fix Miniflare 2 code snippets #20795

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Merged
merged 2 commits into from
Mar 13, 2025
Merged

Fix Miniflare 2 code snippets #20795

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6af7719
Update get-started.mdx
penalosa Mar 13, 2025
b563282
fix code block
penalosa Mar 13, 2025
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86 changes: 45 additions & 41 deletions src/content/docs/workers/testing/miniflare/get-started.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -103,61 +103,63 @@ to workers respectively:
import { Miniflare } from "miniflare";

const mf = new Miniflare({
modules: true,
script: `
export default {
let lastScheduledController;
let lastQueueBatch;
async fetch(request, env, ctx) {
const { pathname } = new URL(request.url);
if (pathname === "/scheduled") {
return Response.json({
scheduledTime: lastScheduledController?.scheduledTime,
cron: lastScheduledController?.cron,
});
} else if (pathname === "/queue") {
return Response.json({
queue: lastQueueBatch.queue,
messages: lastQueueBatch.messages.map((message) => ({
id: message.id,
timestamp: message.timestamp.getTime(),
body: message.body,
bodyType: message.body.constructor.name,
})),
});
} else if (pathname === "/get-url") {
return new Response(request.url);
} else {
return new Response(null, { status: 404 });
}
},
async scheduled(controller, env, ctx) {
lastScheduledController = controller;
if (controller.cron === "* * * * *") controller.noRetry();
},
async queue(batch, env, ctx) {
lastQueueBatch = batch;
if (batch.queue === "needy") batch.retryAll();
for (const message of batch.messages) {
if (message.id === "perfect") message.ack();
}
}
}
`,
let lastScheduledController;
let lastQueueBatch;
export default {
async fetch(request, env, ctx) {
const { pathname } = new URL(request.url);
if (pathname === "/scheduled") {
return Response.json({
scheduledTime: lastScheduledController?.scheduledTime,
cron: lastScheduledController?.cron,
});
} else if (pathname === "/queue") {
return Response.json({
queue: lastQueueBatch.queue,
messages: lastQueueBatch.messages.map((message) => ({
id: message.id,
timestamp: message.timestamp.getTime(),
body: message.body,
bodyType: message.body.constructor.name,
})),
});
} else if (pathname === "/get-url") {
return new Response(request.url);
} else {
return new Response(null, { status: 404 });
}
},
async scheduled(controller, env, ctx) {
lastScheduledController = controller;
if (controller.cron === "* * * * *") controller.noRetry();
},
async queue(batch, env, ctx) {
lastQueueBatch = batch;
if (batch.queue === "needy") batch.retryAll();
for (const message of batch.messages) {
if (message.id === "perfect") message.ack();
}
}
}`,
});

const res = await mf.dispatchFetch("http://localhost:8787/", {
headers: { "X-Message": "Hello Miniflare!" },
});
console.log(await res.text()); // Hello Miniflare!

const worker = await mf.getWorker();

const scheduledResult = await worker.scheduled({
cron: "* * * * *",
});
console.log(scheduledResult); // { outcome: "ok", noRetry: true });

const queueResult = await worker.queue("needy", [
{ id: "a", timestamp: new Date(1000), body: "a" },
{ id: "b", timestamp: new Date(2000), body: { b: 1 } },
{ id: "a", timestamp: new Date(1000), body: "a", attempts: 1 },
{ id: "b", timestamp: new Date(2000), body: { b: 1 }, attempts: 1 },
]);
console.log(queueResult); // { outcome: "ok", retryAll: true, ackAll: false, explicitRetries: [], explicitAcks: []}
```
Expand Down Expand Up @@ -367,6 +369,8 @@ const res = await mf.dispatchFetch("http://localhost:8787/", {
});
const text = await res.text();

const worker = await mf.getWorker();

// Dispatch "scheduled" event to worker
const scheduledResult = await worker.scheduled({ cron: "30 * * * *" })

Expand Down