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//! Contains structures to interact with the locks/sessions API
//!
//! See <https://developer.hashicorp.com/consul/api-docs/session>
//! for the full definition of the API.
use anyhow::Result;
use bytes::Bytes;
use log::*;
use serde::{Deserialize, Serialize};
use crate::Consul;
/// Session creation request as specified in
/// <https://developer.hashicorp.com/consul/api-docs/session#create-session>
#[derive(Serialize, Deserialize, Debug)]
#[serde(rename_all = "PascalCase")]
pub struct SessionRequest {
pub name: String,
pub node: Option<String>,
pub lock_delay: Option<String>,
#[serde(rename = "TTL")]
pub ttl: Option<String>,
pub behavior: Option<String>,
}
/// (for internal use, mostly)
#[derive(Serialize, Deserialize, Debug)]
pub struct SessionResponse {
#[serde(rename = "ID")]
pub id: String,
}
impl Consul {
pub async fn create_session(&self, req: &SessionRequest) -> Result<String> {
debug!("create_session {:?}", req);
let url = format!("{}/v1/session/create", self.url);
let http = self.client.put(&url).json(req).send().await?;
let resp: SessionResponse = http.json().await?;
Ok(resp.id)
}
pub async fn acquire(&self, key: &str, bytes: Bytes, session: &str) -> Result<bool> {
debug!("acquire {}", key);
let url = format!(
"{}/v1/kv/{}{}?acquire={}",
self.url, self.kv_prefix, key, session
);
let http = self.client.put(&url).body(bytes).send().await?;
let resp: bool = http.json().await?;
Ok(resp)
}
pub async fn release(&self, key: &str, bytes: Bytes, session: &str) -> Result<()> {
debug!("release {}", key);
let url = format!(
"{}/v1/kv/{}{}?release={}",
self.url, self.kv_prefix, key, session
);
let http = self.client.put(&url).body(bytes).send().await?;
http.error_for_status()?;
Ok(())
}
}
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