strfry-policies/scripts/filter.ts

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2024-09-15 15:51:23 -06:00
import { readLines } from '../src/deps.ts';
import type { Event, InputMessage, OutputMessage } from '../mod.ts';
for await (const line of readLines(Deno.stdin)) {
const event: Event = JSON.parse(line);
const input: InputMessage = {
type: 'new',
event: event,
receivedAt: Date.now() / 1000,
sourceType: 'IP4',
sourceInfo: '127.0.0.1',
};
const policy = Deno.run({
cmd: Deno.args,
stdin: 'piped',
stdout: 'piped',
});
const bytes = new TextEncoder().encode(JSON.stringify(input));
const writer = policy.stdin.writable.getWriter();
const chunkSize = 4096;
for (let i = 0; i < bytes.length; i += chunkSize) {
const chunk = bytes.slice(i, i + chunkSize);
await writer.write(chunk);
}
policy.stdin.close();
for await (const out of readLines(policy.stdout)) {
const msg: OutputMessage = JSON.parse(out);
if (msg.action === 'accept') {
console.log(line);
}
break;
}
}