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pexpire-command.ts
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pexpire-command.ts
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import { Logger } from "../../../logger";
import { IRequest } from "../../../server/request";
import { Database } from "../../data/database";
import { DatabaseValue } from "../../data/database-value";
import { RedisToken } from "../../protocol/redis-token";
import { IRespCommand } from "../resp-command";
/**
* ### Available since 2.6.0.
* ### PEXPIRE key milliseconds
* This command works exactly like EXPIRE but the time to live of the key is specified in
* milliseconds instead of seconds.
* ### Return value
* Integer reply, specifically:
* - 1 if the timeout was set.
* - 0 if key does not exist.
* ### Examples
* ```
* redis> SET mykey "Hello"
* "OK"
* redis> PEXPIRE mykey 1500
* (integer) 1
* redis> TTL mykey
* (integer) 1
* redis> PTTL mykey
* (integer) 1498
* redis>
* ```
*/
export class PExpireCommand extends IRespCommand {
public maxParams = 2
public minParams = 2
public name = "exists"
private logger: Logger = new Logger(module.id);
public execSync(request: IRequest, db: Database): RedisToken {
this.logger.debug(
`${request.getCommand()}.execute(%s)`,
...request.getParams()
);
let response = 0;
const key: string = request.getParam(0);
let dbValue: DatabaseValue = db.get(key);
if (!dbValue) {
this.logger.debug(`key ${key} does not exist`);
return RedisToken.integer(response);
}
const newTtl: string = request.getParam(1);
if (isNaN(Number(newTtl)) || Number(newTtl) > parseInt(
newTtl,
10
)) {
this.logger.debug(`ttl ${newTtl} is invalid`);
return RedisToken.error("ERR value is not an integer or out of range");
}
this.logger.debug(`Setting expiredAt to ${Number(newTtl)} on ${key}`);
const ttlVal: number = Number(newTtl) < 1
? -1
: new Date().getTime() + Number(newTtl);
dbValue = db.put(
key,
dbValue.setExpiredAt(ttlVal)
);
this.logger.debug(
"Updated key is %j",
`${dbValue}`
);
response = 1;
if (dbValue.getExpiredAt() < 0) {
this.logger.debug(`Key ${key} is effectively deleted - returning ${response}`);
return RedisToken.integer(response);
}
this.logger.debug(`${request.getCommand()}.execute ttl set to ${dbValue.getExpiredAt()}`);
return RedisToken.integer(response);
}
}