use async_trait::async_trait;
use std::collections::HashMap;
use crate::errors::Error;
use crate::errors::Result;
use crate::request::{delete, get, get_vec, put, put_body};
use crate::{Client, QueryMeta, QueryOptions, WriteMeta, WriteOptions};
#[derive(Clone, Default, Eq, PartialEq, Serialize, Deserialize, Debug)]
#[serde(default)]
#[allow(clippy::upper_case_acronyms)]
pub struct KVPair {
pub Key: String,
pub CreateIndex: Option<u64>,
pub ModifyIndex: Option<u64>,
pub LockIndex: Option<u64>,
pub Flags: Option<u64>,
pub Value: String,
pub Session: Option<String>,
}
#[allow(clippy::upper_case_acronyms)]
#[async_trait]
pub trait KV {
async fn acquire(&self, _: &KVPair, _: Option<&WriteOptions>) -> Result<(bool, WriteMeta)>;
async fn delete(&self, _: &str, _: Option<&WriteOptions>) -> Result<(bool, WriteMeta)>;
async fn get(&self, _: &str, _: Option<&QueryOptions>) -> Result<(Option<KVPair>, QueryMeta)>;
async fn list(&self, _: &str, _: Option<&QueryOptions>) -> Result<(Vec<KVPair>, QueryMeta)>;
async fn put(&self, _: &KVPair, _: Option<&WriteOptions>) -> Result<(bool, WriteMeta)>;
async fn release(&self, _: &KVPair, _: Option<&WriteOptions>) -> Result<(bool, WriteMeta)>;
}
#[async_trait]
impl KV for Client {
async fn acquire(&self, pair: &KVPair, o: Option<&WriteOptions>) -> Result<(bool, WriteMeta)> {
let mut params = HashMap::new();
if let Some(i) = pair.Flags {
if i != 0 {
params.insert(String::from("flags"), i.to_string());
}
}
if let Some(ref session) = pair.Session {
params.insert(String::from("acquire"), session.to_owned());
let path = format!("/v1/kv/{}", pair.Key);
put(&path, Some(&pair.Value), &self.config, params, o).await
} else {
Err(Error::from("Session flag is required to acquire lock"))
}
}
async fn delete(&self, key: &str, options: Option<&WriteOptions>) -> Result<(bool, WriteMeta)> {
let path = format!("/v1/kv/{}", key);
delete(&path, &self.config, HashMap::new(), options).await
}
async fn get(
&self,
key: &str,
options: Option<&QueryOptions>,
) -> Result<(Option<KVPair>, QueryMeta)> {
let path = format!("/v1/kv/{}", key);
let x: Result<(Vec<KVPair>, QueryMeta)> =
get(&path, &self.config, HashMap::new(), options).await;
x.map(|r| (r.0.first().cloned(), r.1))
}
async fn list(
&self,
prefix: &str,
o: Option<&QueryOptions>,
) -> Result<(Vec<KVPair>, QueryMeta)> {
let mut params = HashMap::new();
params.insert(String::from("recurse"), String::from(""));
let path = format!("/v1/kv/{}", prefix);
get_vec(&path, &self.config, params, o).await
}
async fn put(&self, pair: &KVPair, o: Option<&WriteOptions>) -> Result<(bool, WriteMeta)> {
let mut params = HashMap::new();
if let Some(i) = pair.Flags {
if i != 0 {
params.insert(String::from("flags"), i.to_string());
}
}
let path = format!("/v1/kv/{}", pair.Key);
put_body(&path, Some(pair.Value.clone()), &self.config, params, o).await
}
async fn release(&self, pair: &KVPair, o: Option<&WriteOptions>) -> Result<(bool, WriteMeta)> {
let mut params = HashMap::new();
if let Some(i) = pair.Flags {
if i != 0 {
params.insert(String::from("flags"), i.to_string());
}
}
if let Some(ref session) = pair.Session {
params.insert(String::from("release"), session.to_owned());
let path = format!("/v1/kv/{}", pair.Key);
put(&path, Some(&pair.Value), &self.config, params, o).await
} else {
Err(Error::from("Session flag is required to release a lock"))
}
}
}