Begin implement bucket management & admin commands

1 files changed, 146 insertions, 0 deletions

diff --git a/src/admin_rpc.rs b/src/admin_rpc.rs
new file mode 100644
index 00000000..8a274c26
--- /dev/null
+++ b/src/admin_rpc.rs
@@ -0,0 +1,146 @@
+use std::sync::Arc;
+
+use serde::{Deserialize, Serialize};
+
+use crate::data::*;
+use crate::error::Error;
+use crate::rpc_server::*;
+use crate::server::Garage;
+use crate::table::*;
+use crate::*;
+
+use crate::bucket_table::*;
+
+pub const ADMIN_RPC_PATH: &str = "_admin";
+
+#[derive(Debug, Serialize, Deserialize)]
+pub enum AdminRPC {
+	BucketOperation(BucketOperation),
+
+	// Replies
+	Ok,
+	BucketList(Vec<String>),
+	BucketInfo(Bucket),
+}
+
+impl RpcMessage for AdminRPC {}
+
+pub struct AdminRpcHandler {
+	garage: Arc<Garage>,
+}
+
+impl AdminRpcHandler {
+	pub fn new(garage: Arc<Garage>) -> Arc<Self> {
+		Arc::new(Self { garage })
+	}
+
+	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,
+					_ => Err(Error::Message(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::Message(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::Message(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 {
+						name: query.name,
+						timestamp: new_time,
+						deleted: false,
+						authorized_keys: vec![],
+					})
+					.await?;
+				Ok(AdminRPC::Ok)
+			}
+			BucketOperation::Delete(query) => {
+				let bucket = match self
+					.garage
+					.bucket_table
+					.get(&EmptyKey, &query.name)
+					.await?
+					.filter(|b| !b.deleted)
+				{
+					None => {
+						return Err(Error::Message(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::Message(format!(
+						"Bucket {} is not empty",
+						query.name
+					)));
+				}
+				if !query.yes {
+					return Err(Error::Message(format!(
+						"Add --yes flag to really perform this operation"
+					)));
+				}
+				self.garage
+					.bucket_table
+					.insert(&Bucket {
+						name: query.name,
+						timestamp: std::cmp::max(bucket.timestamp + 1, now_msec()),
+						deleted: true,
+						authorized_keys: vec![],
+					})
+					.await?;
+				Ok(AdminRPC::Ok)
+			}
+			_ => {
+				// TODO
+				Err(Error::Message(format!("Not implemented")))
+			}
+		}
+	}
+}