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Raise Cloudflare WordPress boot CPU budget #1857

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Merged
chubes4 merged 1 commit into from
Jul 18, 2026
+8 −1
Merged

Raise Cloudflare WordPress boot CPU budget #1857

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2 changes: 1 addition & 1 deletion packages/runtime-cloudflare/README.md
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This additive integration is the first acceptance gate for [wp-codebox#1838](https://github.com/Automattic/wp-codebox/issues/1838). It compiles the current PHP 8.5 Asyncify Wasm asset for workerd, boots WordPress through Playground with the current SQLite integration release, executes PHP, and returns a Codebox runtime-command-result envelope containing the stable `wp-codebox/cloudflare-runtime-health/v1` health payload.

The Worker owns Cloudflare transport and isolate lifecycle. This gate uses one Playground PHP instance per isolate; Durable Objects will serialize site mutation in a later gate. The response identifies the generic `wordpress-playground` backend and `wordpress` environment; callers do not receive Cloudflare binding or limit details. Runtime snapshots, restore, R2, serialization, and cold restoration are deferred to later gates.
The Worker owns Cloudflare transport and isolate lifecycle. Full WordPress initialization requires the paid-plan five-minute CPU allowance, declared as `limits.cpu_ms: 300000`; Cloudflare's fixed 128 MB isolate memory limit remains unchanged. This gate uses one Playground PHP instance per isolate; Durable Objects will serialize site mutation in a later gate. The response identifies the generic `wordpress-playground` backend and `wordpress` environment; callers do not receive Cloudflare binding or limit details. Runtime snapshots, restore, R2, serialization, and cold restoration are deferred to later gates.

## Verification

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1 change: 1 addition & 0 deletions packages/runtime-cloudflare/wrangler.jsonc
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"main": "src/worker.ts",
"compatibility_date": "2026-07-18",
"compatibility_flags": ["nodejs_compat"],
"limits": { "cpu_ms": 300000 },
"rules": [{ "type": "CompiledWasm", "globs": ["**/*.wasm"], "fallthrough": false }]
}
6 changes: 6 additions & 0 deletions tests/cloudflare-runtime.test.ts
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@@ -1,4 +1,5 @@
import assert from "node:assert/strict"
import { readFile } from "node:fs/promises"
import test from "node:test"
import { RUNTIME_COMMAND_RESULT_SCHEMA } from "../packages/runtime-core/src/runtime-contracts.js"
import { CLOUDFLARE_RUNTIME_HEALTH_MARKER, CLOUDFLARE_RUNTIME_HEALTH_SCHEMA, cloudflareRuntimeHealthResponse } from "../packages/runtime-cloudflare/src/health-envelope.js"
Expand All @@ -22,3 +23,8 @@ test("Cloudflare health response preserves the Codebox execution envelope", asyn
assert.equal(payload.execution.status, "ok")
assert.deepEqual(payload.execution.json, health)
})

test("Cloudflare runtime declares the paid-plan WordPress boot CPU budget", async () => {
const config = JSON.parse(await readFile(new URL("../packages/runtime-cloudflare/wrangler.jsonc", import.meta.url), "utf8")) as { limits?: { cpu_ms?: number } }
assert.equal(config.limits?.cpu_ms, 300_000)
})