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import { IRequest } from "../../../server/request";
import { DataType } from "../../data/data-type";
import { Database } from "../../data/database";
import { DatabaseValue } from "../../data/database-value";
import { RedisToken } from "../../protocol/redis-token";
import { IRespCommand } from "../resp-command";
/**
* ### Available since 2.0.0.
* ### HGETALL key
* Returns all fields and values of the hash stored at key. In the returned value, every
* field name is followed by its value, so the length of the reply is twice the size of the
* hash.
* ### Return value
* Array reply: list of fields and their values stored in the hash, or an empty list when key
* does not exist.
* ### Examples
* ```
* redis> HSET myhash field1 "Hello"
* (integer) 1
* redis> HSET myhash field2 "World"
* (integer) 1
* redis> HGETALL myhash
* 1) "field1"
* 2) "Hello"
* 3) "field2"
* 4) "World"
* redis>
* ```
*/
export class HgetallCommand extends IRespCommand {
public DbDataType = DataType.HASH
public maxParams = 1
public minParams = 1
public name = "hgetall"
private logger: Logger = new Logger(module.id);
public execSync(request: IRequest, db: Database): RedisToken {
this.logger.debug(
`${request.getCommand()}.execute(%s)`,
...request.getParams()
);
const key: string = request.getParam(0);
this.logger.debug(`Getting HASH ${key}`);
const item: DatabaseValue = db.get(key),
results: RedisToken[] = [];
Iif (!item) {
this.logger.debug(`HASH ${key} not found`);
results.push(RedisToken.nullString());
} else {
const hash = item.getHash();
for (const field of Object.keys(hash)) {
results.push(RedisToken.string(field));
results.push(RedisToken.string(hash[field]));
}
}
return RedisToken.array(results);
}
}
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