Add outline for `jget`
Sayan Nandan
4 years ago
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/*
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* Created on Mon Aug 31 2020
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*
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* This file is a part of TerrabaseDB
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* Copyright (c) 2020, Sayan Nandan <ohsayan at outlook dot com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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*/
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//! #`JGET` queries
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//! Functions for handling `JGET` queries
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use crate::coredb::CoreDB;
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use crate::protocol::{responses, ActionGroup, Connection};
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use crate::resp::{BytesWrapper, GroupBegin};
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use bytes::Bytes;
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use libtdb::TResult;
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use serde::{Deserialize, Serialize};
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use std::collections::HashMap;
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/// A key/value pair
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/// When we write JSON to the stream in `JGET`, it looks something like:
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/// ```json
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/// {
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/// "keythatexists" : "value",
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/// "nilkey": null,
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/// }
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/// ```
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#[derive(Serialize, Deserialize)]
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pub struct KVPair(HashMap<String, Option<String>>);
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impl KVPair {
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pub fn with_capacity(size: usize) -> Self {
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KVPair(HashMap::with_capacity(size))
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}
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}
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/// Run a `JGET` query
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/// This returns a JSON key/value pair of keys and values
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/// We need to write something like
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/// ```json
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/// &1\n
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/// $15\n
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/// {"key":"value"}\n
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/// ```
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///
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pub async fn jget(handle: &CoreDB, con: &mut Connection, act: ActionGroup) -> TResult<()> {
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let howmany = act.howmany();
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if howmany != 1 {
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return con
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.write_response(responses::fresp::R_ACTION_ERR.to_owned())
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.await;
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}
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todo!()
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}
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