add support for VM updates

Co-authored-by: Ramil_Algayev <pro.remred@gmail.com>
Co-authored-by: ghe0 <gheorghe@gheo.tech>
Reviewed-on: #1
Co-authored-by: ramrem <ralgayev@detee.ltd>
Co-committed-by: ramrem <ralgayev@detee.ltd>

Cargo.lock

@@ -26,6 +26,21 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "android-tzdata"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
+
+[[package]]
+name = "android_system_properties"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "anstream"
 version = "0.6.18"
@@ -204,6 +219,7 @@ checksum = "b048fb63fd8b5923fc5aa7b340d8e156aec7ec02f0c78fa8a6ddc2613f6f71de"
 name = "brain-mock"
 version = "0.1.0"
 dependencies = [
+ "chrono",
  "dashmap",
  "env_logger",
  "log",
@@ -216,6 +232,12 @@ dependencies = [
  "uuid",
 ]
 
+[[package]]
+name = "bumpalo"
+version = "3.16.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79296716171880943b8470b5f8d03aa55eb2e645a4874bdbb28adb49162e012c"
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
@@ -228,18 +250,47 @@ version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "325918d6fe32f23b19878fe4b34794ae41fc19ddbe53b10571a4874d44ffd39b"
 
+[[package]]
+name = "cc"
+version = "1.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c31a0499c1dc64f458ad13872de75c0eb7e3fdb0e67964610c914b034fc5956e"
+dependencies = [
+ "shlex",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "chrono"
+version = "0.4.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7e36cc9d416881d2e24f9a963be5fb1cd90966419ac844274161d10488b3e825"
+dependencies = [
+ "android-tzdata",
+ "iana-time-zone",
+ "js-sys",
+ "num-traits",
+ "wasm-bindgen",
+ "windows-targets",
+]
+
 [[package]]
 name = "colorchoice"
 version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
 
+[[package]]
+name = "core-foundation-sys"
+version = "0.8.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
+
 [[package]]
 name = "crossbeam-utils"
 version = "0.8.21"
@@ -527,6 +578,29 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "iana-time-zone"
+version = "0.1.61"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "235e081f3925a06703c2d0117ea8b91f042756fd6e7a6e5d901e8ca1a996b220"
+dependencies = [
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "wasm-bindgen",
+ "windows-core",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "indexmap"
 version = "1.9.3"
@@ -568,6 +642,16 @@ version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d75a2a4b1b190afb6f5425f10f6a8f959d2ea0b9c2b1d79553551850539e4674"
 
+[[package]]
+name = "js-sys"
+version = "0.3.76"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6717b6b5b077764fb5966237269cb3c64edddde4b14ce42647430a78ced9e7b7"
+dependencies = [
+ "once_cell",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.168"
@@ -640,6 +724,15 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "defc4c55412d89136f966bbb339008b474350e5e6e78d2714439c386b3137a03"
 
+[[package]]
+name = "num-traits"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "object"
 version = "0.36.5"
@@ -924,6 +1017,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "slab"
 version = "0.4.9"
@@ -1193,6 +1292,69 @@ version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a474f6281d1d70c17ae7aa6a613c87fce69a127e2624002df63dcb39d6cf6396"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f89bb38646b4f81674e8f5c3fb81b562be1fd936d84320f3264486418519c79"
+dependencies = [
+ "bumpalo",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2cc6181fd9a7492eef6fef1f33961e3695e4579b9872a6f7c83aee556666d4fe"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30d7a95b763d3c45903ed6c81f156801839e5ee968bb07e534c44df0fcd330c2"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.99"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "943aab3fdaaa029a6e0271b35ea10b72b943135afe9bffca82384098ad0e06a6"
+
+[[package]]
+name = "windows-core"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+dependencies = [
+ "windows-targets",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"

Cargo.toml

@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+chrono = "0.4.39"
 dashmap = "6.1.0"
 env_logger = "0.11.6"
 log = "0.4.22"

brain.proto

@@ -8,7 +8,7 @@ message NodePubkey {
   string node_pubkey = 1;
 }
 
-message RegisterNodeRequest { 
+message RegisterNodeReq { 
   string node_pubkey = 1;
   string owner_pubkey = 2;
   string ip = 3;
@@ -23,7 +23,7 @@ message RegisterNodeRequest {
   uint32 max_ports_per_vm = 12;
 }
 
-message NewVMRequest {
+message NewVMReq {
   string uuid = 1; // UUID is empty when CLI sends request; brain sets UUID
   string hostname = 2;
   string admin_pubkey = 3;
@@ -40,6 +40,22 @@ message NewVMRequest {
   string dtrfs_sha = 14;
 }
 
+message UpdateVMReq {
+  string uuid = 1;
+  uint32 disk_size_gb = 3;
+  uint32 vcpus = 4;
+  uint32 memory_mb = 5;
+  string kernel_url = 6;
+  string kernel_sha = 7;
+  string dtrfs_url = 8;
+  string dtrfs_sha = 9;
+}
+
+message UpdateVMResp {
+  string uuid = 1;
+  string error = 3;
+}
+
 message VMContract {
   string uuid = 1;
   string hostname = 2;
@@ -54,6 +70,7 @@ message VMContract {
   string kernel_sha = 11;
   string dtrfs_sha = 12;
   string created_at = 13;
+  string updated_at = 14;
 }
 
 message ListVMContractsReq {
@@ -61,7 +78,7 @@ message ListVMContractsReq {
   string node_pubkey = 2;
 }
 
-message NewVMConfirmation {
+message NewVMResp {
   string uuid = 1;
   repeated uint32 exposed_ports = 2;
   string public_ipv4 = 3;
@@ -69,18 +86,21 @@ message NewVMConfirmation {
   string error = 5;
 }
 
-message DeletedVMUpdate {
+message DeleteVMReq {
   string uuid = 1;
 }
 
 service BrainDaemonService {
-  rpc RegisterNode (RegisterNodeRequest) returns (Empty);
+  rpc RegisterNode (RegisterNodeReq) returns (Empty);
-  rpc GetNewVMReqs (NodePubkey) returns (stream NewVMRequest);
+  rpc GetNewVMReqs (NodePubkey) returns (stream NewVMReq);
-  rpc SendVMConfirmations (stream NewVMConfirmation) returns (Empty);
+  rpc SendNewVMResp (stream NewVMResp) returns (Empty);
-  rpc DeletedVMUpdates (NodePubkey) returns (stream DeletedVMUpdate);
+  rpc GetDeleteVMReq (NodePubkey) returns (stream DeleteVMReq);
   rpc ListVMContracts (ListVMContractsReq) returns (stream VMContract);
+  rpc GetUpdateVMReq (NodePubkey) returns (stream UpdateVMReq);
+  rpc SendUpdateVMResp (stream UpdateVMResp) returns (Empty);
 }
 
+
 message NodeFilters {
   uint32 free_ports = 1;
   bool offers_ipv4 = 2;
@@ -101,9 +121,9 @@ message NodeListResp {
 }
 
 service BrainCliService {
-  rpc CreateVMContract (NewVMRequest) returns (NewVMConfirmation);
+  rpc CreateVMContract (NewVMReq) returns (NewVMResp);
   rpc ListVMContracts (ListVMContractsReq) returns (stream VMContract);
   rpc ListNodes (NodeFilters) returns (stream NodeListResp);
-  rpc DeleteVM (DeletedVMUpdate) returns (Empty);
+  rpc DeleteVM (DeleteVMReq) returns (Empty);
+  rpc UpdateVM (UpdateVMReq) returns (UpdateVMResp);
 }
-

src/data.rs

@@ -1,5 +1,6 @@
 #![allow(dead_code)]
 use crate::grpc::brain as grpc;
+use chrono::Utc;
 use dashmap::DashMap;
 use log::{debug, info, warn};
 use std::sync::RwLock;
@@ -22,8 +23,8 @@ pub struct Node {
     pub max_ports_per_vm: u32,
 }
 
-impl From<grpc::RegisterNodeRequest> for Node {
+impl From<grpc::RegisterNodeReq> for Node {
-    fn from(node: grpc::RegisterNodeRequest) -> Self {
+    fn from(node: grpc::RegisterNodeReq) -> Self {
         Node {
             public_key: node.node_pubkey,
             owner_key: node.owner_pubkey,
@@ -69,6 +70,7 @@ pub struct Contract {
     pub kernel_sha: String,
     pub dtrfs_sha: String,
     pub created_at: String,
+    pub updated_at: String,
 }
 
 impl Into<grpc::VmContract> for Contract {
@@ -87,6 +89,7 @@ impl Into<grpc::VmContract> for Contract {
             kernel_sha: self.kernel_sha,
             dtrfs_sha: self.dtrfs_sha,
             created_at: self.created_at,
+            updated_at: self.updated_at,
         }
     }
 }
@@ -95,9 +98,11 @@ impl Into<grpc::VmContract> for Contract {
 pub struct BrainData {
     nodes: RwLock<Vec<Node>>,
     contracts: RwLock<Vec<Contract>>,
-    tmp_vmrequests: DashMap<String, (grpc::NewVmRequest, OneshotSender<grpc::NewVmConfirmation>)>,
+    tmp_newvm_reqs: DashMap<String, (grpc::NewVmReq, OneshotSender<grpc::NewVmResp>)>,
-    daemon_deletevm_tx: DashMap<String, Sender<grpc::DeletedVmUpdate>>,
+    tmp_updatevm_reqs: DashMap<String, (grpc::UpdateVmReq, OneshotSender<grpc::UpdateVmResp>)>,
-    daemon_newvm_tx: DashMap<String, Sender<grpc::NewVmRequest>>,
+    daemon_deletevm_tx: DashMap<String, Sender<grpc::DeleteVmReq>>,
+    daemon_newvm_tx: DashMap<String, Sender<grpc::NewVmReq>>,
+    daemon_updatevm_tx: DashMap<String, Sender<grpc::UpdateVmReq>>,
 }
 
 #[derive(Debug)]
@@ -112,13 +117,15 @@ impl BrainData {
         Self {
             nodes: RwLock::new(Vec::new()),
             contracts: RwLock::new(Vec::new()),
-            tmp_vmrequests: DashMap::new(),
+            tmp_newvm_reqs: DashMap::new(),
+            tmp_updatevm_reqs: DashMap::new(),
             daemon_deletevm_tx: DashMap::new(),
             daemon_newvm_tx: DashMap::new(),
+            daemon_updatevm_tx: DashMap::new(),
         }
     }
 
-    pub fn insert_node(&self, node: grpc::RegisterNodeRequest) {
+    pub fn insert_node(&self, node: grpc::RegisterNodeReq) {
         info!("Registering node {node:?}");
         let mut nodes = self.nodes.write().unwrap();
         for n in nodes.iter_mut() {
@@ -131,11 +138,17 @@ impl BrainData {
         nodes.push(node.into());
     }
 
-    pub fn add_daemon_deletevm_tx(&self, node_pubkey: &str, tx: Sender<grpc::DeletedVmUpdate>) {
+    pub fn add_daemon_deletevm_tx(&self, node_pubkey: &str, tx: Sender<grpc::DeleteVmReq>) {
         self.daemon_deletevm_tx.insert(node_pubkey.to_string(), tx);
     }
 
-    pub async fn delete_vm(&self, delete_vm: grpc::DeletedVmUpdate) {
+    pub fn add_daemon_updatevm_tx(&self, node_pubkey: &str, tx: Sender<grpc::UpdateVmReq>) {
+        log::debug!("Adding daemon updatevm tx for node_pubkey: {}", node_pubkey);
+        self.daemon_updatevm_tx.insert(node_pubkey.to_string(), tx);
+        info!("Added daemon TX for {}", node_pubkey);
+    }
+
+    pub async fn delete_vm(&self, delete_vm: grpc::DeleteVmReq) {
         if let Some(contract) = self.find_contract_by_uuid(&delete_vm.uuid) {
             info!("Found vm {}. Deleting...", delete_vm.uuid);
             if let Some(daemon_tx) = self.daemon_deletevm_tx.get(&contract.node_pubkey) {
@@ -155,14 +168,14 @@ impl BrainData {
         }
     }
 
-    pub async fn add_daemon_newvm_tx(&self, node_pubkey: &str, tx: Sender<grpc::NewVmRequest>) {
+    pub async fn add_daemon_newvm_tx(&self, node_pubkey: &str, tx: Sender<grpc::NewVmReq>) {
-        self.tmp_vmrequests
+        self.tmp_newvm_reqs
             .retain(|_, req| req.0.node_pubkey != node_pubkey);
         self.daemon_newvm_tx.insert(node_pubkey.to_string(), tx);
     }
 
-    pub async fn submit_vmconfirmation(&self, confirmation: grpc::NewVmConfirmation) {
+    pub async fn submit_vmconfirmation(&self, confirmation: grpc::NewVmResp) {
-        let newvmreq = match self.tmp_vmrequests.remove(&confirmation.uuid) {
+        let newvmreq = match self.tmp_newvm_reqs.remove(&confirmation.uuid) {
             Some((_, r)) => r,
             None => {
                 log::error!(
@@ -188,7 +201,8 @@ impl BrainData {
             exposed_ports: confirmation.exposed_ports,
             public_ipv4: confirmation.public_ipv4,
             public_ipv6: confirmation.public_ipv6,
-            created_at: format!("{:?}", std::time::SystemTime::now()),
+            created_at: Utc::now().to_rfc3339(),
+            updated_at: String::new(),
             hostname: newvmreq.0.hostname,
             admin_pubkey: newvmreq.0.admin_pubkey,
             node_pubkey: newvmreq.0.node_pubkey,
@@ -202,16 +216,44 @@ impl BrainData {
         self.contracts.write().unwrap().push(contract);
     }
 
+    pub async fn submit_updatevm_resp(&self, resp: grpc::UpdateVmResp) {
+        let updatevmreq = match self.tmp_updatevm_reqs.remove(&resp.uuid) {
+            Some((_, r)) => r,
+            None => {
+                log::error!(
+                    "Received confirmation for ghost UpdateVMRequest {}",
+                    resp.uuid
+                );
+                return;
+            }
+        };
+        if let Err(e) = updatevmreq.1.send(resp.clone()) {
+            log::error!("CLI RX dropped before receiving UpdateVMResp {resp:?}. Error is: {e:?}");
+        }
+        if resp.error != "" {
+            return;
+        }
+        let mut contracts = self.contracts.write().unwrap();
+        if let Some(contract) = contracts.iter_mut().find(|c| c.uuid == resp.uuid) {
+            contract.disk_size_gb = updatevmreq.0.disk_size_gb;
+            contract.vcpus = updatevmreq.0.vcpus;
+            contract.memory_mb = updatevmreq.0.memory_mb;
+            contract.kernel_sha = updatevmreq.0.kernel_sha;
+            contract.dtrfs_sha = updatevmreq.0.dtrfs_sha;
+            contract.updated_at = Utc::now().to_rfc3339();
+        }
+    }
+
     pub async fn submit_newvmrequest(
         &self,
-        mut req: grpc::NewVmRequest,
+        mut req: grpc::NewVmReq,
-        tx: OneshotSender<grpc::NewVmConfirmation>,
+        tx: OneshotSender<grpc::NewVmResp>,
     ) {
         let uuid = uuid::Uuid::new_v4().to_string();
 
         req.uuid = uuid.clone();
         info!("Inserting new vm request in memory: {req:?}");
-        self.tmp_vmrequests
+        self.tmp_newvm_reqs
             .insert(req.uuid.clone(), (req.clone(), tx));
         if let Some(server_tx) = self.daemon_newvm_tx.get(&req.node_pubkey) {
             debug!(
@@ -225,7 +267,7 @@ impl BrainData {
                     "Daemon {} RX dropped before sending update. Cleaning memory...",
                     req.node_pubkey
                 );
-                self.submit_vmconfirmation(grpc::NewVmConfirmation {
+                self.submit_vmconfirmation(grpc::NewVmResp {
                     error: "Daemon is offline.".to_string(),
                     uuid,
                     exposed_ports: Vec::new(),
@@ -237,6 +279,61 @@ impl BrainData {
         }
     }
 
+    pub async fn submit_updatevm_req(
+        &self,
+        req: grpc::UpdateVmReq,
+        tx: OneshotSender<grpc::UpdateVmResp>,
+    ) {
+        let uuid = req.uuid.clone();
+        info!("Inserting new vm update request in memory: {req:?}");
+        let node_pubkey = match self.find_contract_by_uuid(&req.uuid) {
+            Some(contract) => contract.node_pubkey,
+            None => {
+                log::warn!(
+                    "Received UpdateVMReq for a contract that does not exist: {}",
+                    req.uuid
+                );
+                let _ = tx.send(grpc::UpdateVmResp {
+                    uuid,
+                    error: "Contract does not exist.".to_string(),
+                });
+                return;
+            }
+        };
+        self.tmp_updatevm_reqs
+            .insert(req.uuid.clone(), (req.clone(), tx));
+        if let Some(server_tx) = self.daemon_updatevm_tx.get(&node_pubkey) {
+            debug!(
+                "Found daemon TX for {}. Sending updateVMReq {}",
+                node_pubkey, req.uuid
+            );
+            match server_tx.send(req.clone()).await {
+                Ok(_) => {
+                    debug!("Successfully sent updateVMReq to {}", node_pubkey);
+                    return;
+                }
+                Err(e) => {
+                    warn!(
+                        "Failed to send updateVMReq to {}: {}. Cleaning memory...",
+                        node_pubkey, e
+                    );
+                    self.submit_updatevm_resp(grpc::UpdateVmResp {
+                        uuid,
+                        error: "Daemon is offline.".to_string(),
+                    })
+                    .await;
+                }
+            }
+        } else {
+            warn!("No daemon TX found for {}", node_pubkey);
+            self.submit_updatevm_resp(grpc::UpdateVmResp {
+                uuid,
+                error: "Daemon is offline.".to_string(),
+            })
+            .await;
+        }
+    }
+
     pub fn insert_contract(&self, contract: Contract) {
         let mut contracts = self.contracts.write().unwrap();
         contracts.push(contract);

src/grpc.rs

@@ -41,13 +41,13 @@ impl BrainCliMock {
 impl BrainDaemonService for BrainDaemonMock {
     async fn register_node(
         &self,
-        req: Request<RegisterNodeRequest>,
+        req: Request<RegisterNodeReq>,
     ) -> Result<Response<Empty>, Status> {
         self.data.insert_node(req.into_inner());
         Ok(Response::new(Empty {}))
     }
 
-    type GetNewVMReqsStream = Pin<Box<dyn Stream<Item = Result<NewVmRequest, Status>> + Send>>;
+    type GetNewVMReqsStream = Pin<Box<dyn Stream<Item = Result<NewVmReq, Status>> + Send>>;
 
     async fn get_new_vm_reqs(
         &self,
@@ -67,7 +67,7 @@ impl BrainDaemonService for BrainDaemonMock {
                 debug!("Sending NewVMRequest to {}: {newvmreq:?}", req.node_pubkey);
                 if let Err(e) = grpc_tx.send(Ok(newvmreq)).await {
                     warn!("Could not send NewVMRequest to {}: {e:?}", req.node_pubkey);
-                    data.submit_vmconfirmation(NewVmConfirmation {
+                    data.submit_vmconfirmation(NewVmResp {
                         error: "Daemon not connected.".to_string(),
                         uuid,
                         ..Default::default()
@@ -83,11 +83,11 @@ impl BrainDaemonService for BrainDaemonMock {
         ))
     }
 
-    async fn send_vm_confirmations(
+    async fn send_new_vm_resp(
         &self,
-        req: Request<Streaming<NewVmConfirmation>>,
+        req: Request<Streaming<NewVmResp>>,
     ) -> Result<Response<Empty>, Status> {
-        debug!("Some node connected to stream NewVmConfirmation");
+        debug!("Some node connected to stream NewVMResp");
         let mut confirmations = req.into_inner();
         while let Some(confirmation) = confirmations.next().await {
             match confirmation {
@@ -96,22 +96,21 @@ impl BrainDaemonService for BrainDaemonMock {
                     self.data.submit_vmconfirmation(c).await;
                 }
                 Err(e) => {
-                    log::warn!("Daemon disconnected from Streaming<NewVmConfirmation>: {e:?}")
+                    log::warn!("Daemon disconnected from Streaming<NewVMResp>: {e:?}")
                 }
             }
         }
         Ok(Response::new(Empty {}))
     }
 
-    type DeletedVMUpdatesStream =
+    type GetDeleteVMReqStream = Pin<Box<dyn Stream<Item = Result<DeleteVmReq, Status>> + Send>>;
-        Pin<Box<dyn Stream<Item = Result<DeletedVmUpdate, Status>> + Send>>;
 
-    async fn deleted_vm_updates(
+    async fn get_delete_vm_req(
         &self,
         req: Request<NodePubkey>,
-    ) -> Result<Response<Self::DeletedVMUpdatesStream>, Status> {
+    ) -> Result<Response<Self::GetDeleteVMReqStream>, Status> {
         let node_pubkey = req.into_inner().node_pubkey;
-        info!("Daemon {node_pubkey} requested DeletedVMUpdatesStream");
+        info!("Daemon {node_pubkey} requested GetDeleteVMReqStream");
         let (grpc_tx, grpc_rx) = mpsc::channel(6);
         let (data_tx, mut data_rx) = mpsc::channel(6);
         self.data
@@ -135,7 +134,7 @@ impl BrainDaemonService for BrainDaemonMock {
         });
         let output_stream = ReceiverStream::new(grpc_rx);
         Ok(Response::new(
-            Box::pin(output_stream) as Self::DeletedVMUpdatesStream
+            Box::pin(output_stream) as Self::GetDeleteVMReqStream
         ))
     }
 
@@ -159,14 +158,73 @@ impl BrainDaemonService for BrainDaemonMock {
             Box::pin(output_stream) as Self::ListVMContractsStream
         ))
     }
+
+    type GetUpdateVMReqStream = Pin<Box<dyn Stream<Item = Result<UpdateVmReq, Status>> + Send>>;
+
+    async fn get_update_vm_req(
+        &self,
+        req: Request<NodePubkey>,
+    ) -> Result<Response<Self::GetUpdateVMReqStream>, Status> {
+        let req = req.into_inner();
+        info!("Daemon {} requested GetUpdateVMStream", req.node_pubkey);
+        let (grpc_tx, grpc_rx) = mpsc::channel(6);
+        let (data_tx, mut data_rx) = mpsc::channel(6);
+        self.data
+            .add_daemon_updatevm_tx(&req.node_pubkey, data_tx);
+        let data = self.data.clone();
+        tokio::spawn(async move {
+            while let Some(updatevmreq) = data_rx.recv().await {
+                debug!(
+                    "Sending UpdateVMRequest to {}: {updatevmreq:?}",
+                    req.node_pubkey
+                );
+                if let Err(e) = grpc_tx.send(Ok(updatevmreq.clone())).await {
+                    warn!(
+                        "Could not send UpdateVMRequest to {}: {e:?}",
+                        req.node_pubkey
+                    );
+                    data.submit_updatevm_resp(UpdateVmResp {
+                        error: "Daemon not connected.".to_string(),
+                        uuid: updatevmreq.uuid,
+                    })
+                    .await;
+                    break;
+                }
+            }
+        });
+        let output_stream = ReceiverStream::new(grpc_rx);
+        Ok(Response::new(
+            Box::pin(output_stream) as Self::GetUpdateVMReqStream
+        ))
+    }
+
+    async fn send_update_vm_resp(
+        &self,
+        req: Request<Streaming<UpdateVmResp>>,
+    ) -> Result<Response<Empty>, Status> {
+        debug!("Some node connected to stream NewVMResp");
+        let mut resp_stream = req.into_inner();
+        while let Some(update_vm_resp) = resp_stream.next().await {
+            match update_vm_resp {
+                Ok(c) => {
+                    info!("Received confirmation from daemon: {c:?}");
+                    self.data.submit_updatevm_resp(c).await;
+                }
+                Err(e) => {
+                    log::warn!("Daemon disconnected from Streaming<NewVMResp>: {e:?}")
+                }
+            }
+        }
+        Ok(Response::new(Empty {}))
+    }
 }
 
 #[tonic::async_trait]
 impl BrainCliService for BrainCliMock {
     async fn create_vm_contract(
         &self,
-        req: Request<NewVmRequest>,
+        req: Request<NewVmReq>,
-    ) -> Result<Response<NewVmConfirmation>, Status> {
+    ) -> Result<Response<NewVmResp>, Status> {
         let req = req.into_inner();
         info!("New VM requested via CLI: {req:?}");
         let admin_pubkey = req.admin_pubkey.clone();
@@ -186,6 +244,25 @@ impl BrainCliService for BrainCliMock {
         }
     }
 
+    async fn update_vm(&self, req: Request<UpdateVmReq>) -> Result<Response<UpdateVmResp>, Status> {
+        let req = req.into_inner();
+        info!("Update VM requested via CLI: {req:?}");
+        let (oneshot_tx, oneshot_rx) = tokio::sync::oneshot::channel();
+        self.data.submit_updatevm_req(req, oneshot_tx).await;
+        match oneshot_rx.await {
+            Ok(response) => {
+                info!("Sending UpdateVMResp: {response:?}");
+                Ok(Response::new(response))
+            }
+            Err(e) => {
+                log::error!("Something weird happened. Reached error {e:?}");
+                Err(Status::unknown(
+                    "Request failed due to unknown error. Please try again or contact the DeTEE devs team.",
+                ))
+            }
+        }
+    }
+
     type ListVMContractsStream = Pin<Box<dyn Stream<Item = Result<VmContract, Status>> + Send>>;
     async fn list_vm_contracts(
         &self,
@@ -226,7 +303,7 @@ impl BrainCliService for BrainCliMock {
         ))
     }
 
-    async fn delete_vm(&self, req: Request<DeletedVmUpdate>) -> Result<Response<Empty>, Status> {
+    async fn delete_vm(&self, req: Request<DeleteVmReq>) -> Result<Response<Empty>, Status> {
         let req = req.into_inner();
         info!("Unknown CLI requested to delete vm {}", req.uuid);
         self.data.delete_vm(req).await;