/
database.ts
43 lines (41 loc) · 1.13 KB
/
database.ts
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import { BaseHandler } from "./handler.ts";
import {
RedisArray,
RedisValue,
RedisString,
RedisValueOf,
RedisBulkString,
RedisNumber,
bufferToString
} from "./protocol.ts";
type Database = { [index: string]: RedisBulkString | RedisNumber };
export class DatabaseHandler extends BaseHandler {
database: { [index: number]: Database } = {
0: {}
};
db = 0;
commands = {
...super.commands,
"SET": this.command_SET,
"GET": this.command_GET
};
private async command_SET(request: RedisArray): Promise<RedisValue> {
const kvs = request.value.slice(1);
let i = 0;
for (; (i + 1) * 2 <= kvs.length; i++) {
// TODO: check type by tag
const key = kvs[i * 2].value as Uint8Array;
const v = kvs[i * 2 + 1] as RedisBulkString;
this.database[this.db][bufferToString(key)] = v;
}
return RedisValueOf.number(i);
}
private async command_GET(request: RedisArray): Promise<RedisValue> {
const key = request.value[1] as RedisBulkString | RedisString;
if (!key) {
return RedisValueOf.nil;
} else {
return this.database[this.db][bufferToString(key.value)];
}
}
}