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use std::sync::Arc;
use serde::{Deserialize, Serialize};
use crate::data::*;
use crate::error::Error;
use crate::server::Garage;
use crate::table::*;
use crate::rpc::rpc_client::*;
use crate::rpc::rpc_server::*;
use crate::store::bucket_table::*;
use crate::store::repair::Repair;
use crate::*;
pub const ADMIN_RPC_TIMEOUT: Duration = Duration::from_secs(30);
pub const ADMIN_RPC_PATH: &str = "_admin";
#[derive(Debug, Serialize, Deserialize)]
pub enum AdminRPC {
BucketOperation(BucketOperation),
KeyOperation(KeyOperation),
LaunchRepair(RepairOpt),
// Replies
Ok(String),
BucketList(Vec<String>),
BucketInfo(Bucket),
}
impl RpcMessage for AdminRPC {}
pub struct AdminRpcHandler {
garage: Arc<Garage>,
rpc_client: Arc<RpcClient<AdminRPC>>,
}
impl AdminRpcHandler {
pub fn new(garage: Arc<Garage>) -> Arc<Self> {
let rpc_client = garage.system.clone().rpc_client::<AdminRPC>(ADMIN_RPC_PATH);
Arc::new(Self { garage, rpc_client })
}
pub fn register_handler(self: Arc<Self>, rpc_server: &mut RpcServer) {
rpc_server.add_handler::<AdminRPC, _, _>(ADMIN_RPC_PATH.to_string(), move |msg, _addr| {
let self2 = self.clone();
async move {
match msg {
AdminRPC::BucketOperation(bo) => self2.handle_bucket_cmd(bo).await,
AdminRPC::KeyOperation(ko) => self2.handle_key_cmd(ko).await,
AdminRPC::LaunchRepair(opt) => self2.handle_launch_repair(opt).await,
_ => Err(Error::BadRequest(format!("Invalid RPC"))),
}
}
});
}
async fn handle_bucket_cmd(&self, cmd: BucketOperation) -> Result<AdminRPC, Error> {
match cmd {
BucketOperation::List => {
let bucket_names = self
.garage
.bucket_table
.get_range(&EmptyKey, None, Some(()), 10000)
.await?
.iter()
.map(|b| b.name.to_string())
.collect::<Vec<_>>();
Ok(AdminRPC::BucketList(bucket_names))
}
BucketOperation::Info(query) => {
let bucket = self
.garage
.bucket_table
.get(&EmptyKey, &query.name)
.await?
.filter(|b| !b.deleted);
match bucket {
Some(b) => Ok(AdminRPC::BucketInfo(b)),
None => Err(Error::BadRequest(format!(
"Bucket {} not found",
query.name
))),
}
}
BucketOperation::Create(query) => {
let bucket = self.garage.bucket_table.get(&EmptyKey, &query.name).await?;
if bucket.as_ref().filter(|b| !b.deleted).is_some() {
return Err(Error::BadRequest(format!(
"Bucket {} already exists",
query.name
)));
}
let new_time = match bucket {
Some(b) => std::cmp::max(b.timestamp + 1, now_msec()),
None => now_msec(),
};
self.garage
.bucket_table
.insert(&Bucket::new(query.name.clone(), new_time, false, vec![]))
.await?;
Ok(AdminRPC::Ok(format!("Bucket {} was created.", query.name)))
}
BucketOperation::Delete(query) => {
let bucket = match self
.garage
.bucket_table
.get(&EmptyKey, &query.name)
.await?
.filter(|b| !b.deleted)
{
None => {
return Err(Error::BadRequest(format!(
"Bucket {} does not exist",
query.name
)));
}
Some(b) => b,
};
let objects = self
.garage
.object_table
.get_range(&query.name, None, Some(()), 10)
.await?;
if !objects.is_empty() {
return Err(Error::BadRequest(format!(
"Bucket {} is not empty",
query.name
)));
}
if !query.yes {
return Err(Error::BadRequest(format!(
"Add --yes flag to really perform this operation"
)));
}
self.garage
.bucket_table
.insert(&Bucket::new(
query.name.clone(),
std::cmp::max(bucket.timestamp + 1, now_msec()),
true,
vec![],
))
.await?;
Ok(AdminRPC::Ok(format!("Bucket {} was deleted.", query.name)))
}
_ => {
// TODO
Err(Error::Message(format!("Not implemented")))
}
}
}
async fn handle_key_cmd(&self, cmd: KeyOperation) -> Result<AdminRPC, Error> {
Err(Error::Message(format!("Not implemented")))
}
async fn handle_launch_repair(self: &Arc<Self>, opt: RepairOpt) -> Result<AdminRPC, Error> {
if !opt.yes {
return Err(Error::BadRequest(format!(
"Please provide the --yes flag to initiate repair operations."
)));
}
if opt.all_nodes {
let mut opt_to_send = opt.clone();
opt_to_send.all_nodes = false;
let mut failures = vec![];
let ring = self.garage.system.ring.borrow().clone();
for node in ring.config.members.keys() {
if self
.rpc_client
.call(
*node,
AdminRPC::LaunchRepair(opt_to_send.clone()),
ADMIN_RPC_TIMEOUT,
)
.await
.is_err()
{
failures.push(node.clone());
}
}
if failures.is_empty() {
Ok(AdminRPC::Ok(format!("Repair launched on all nodes")))
} else {
Err(Error::Message(format!(
"Could not launch repair on nodes: {:?} (launched successfully on other nodes)",
failures
)))
}
} else {
let repair = Repair {
garage: self.garage.clone(),
};
self.garage
.system
.background
.spawn_worker("Repair worker".into(), move |must_exit| async move {
repair.repair_worker(opt, must_exit).await
})
.await;
Ok(AdminRPC::Ok(format!(
"Repair launched on {:?}",
self.garage.system.id
)))
}
}
}
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