From e40122f1be76d54f9dc791c005f21290d7f44be2 Mon Sep 17 00:00:00 2001
From: miguelToscano <miguetoscano288@gmail.com>
Date: Wed, 19 Oct 2022 14:15:15 -0300
Subject: [PATCH 1/2] added canister method

---
 candid/registry.did                          |  1 +
 registries/canister_registry/src/registry.rs | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/candid/registry.did b/candid/registry.did
index f7404a9..914e157 100644
--- a/candid/registry.did
+++ b/candid/registry.did
@@ -50,6 +50,7 @@ service : {
     "add"     : (trusted_source: opt principal, canister: add_canister_input) -> (operation_response);
     "remove"  : (trusted_source: opt principal, canister: principal) -> (operation_response);
     "get_all" : () -> (vec canister_metadata) query;
+    "get_multiple": (vec principal) -> (vec opt canister_metadata) query;
 
     "add_admin" : (admin: principal) -> (operation_response);
 }
diff --git a/registries/canister_registry/src/registry.rs b/registries/canister_registry/src/registry.rs
index 09bf699..c600fc6 100644
--- a/registries/canister_registry/src/registry.rs
+++ b/registries/canister_registry/src/registry.rs
@@ -112,6 +112,19 @@ pub fn get(canister: Principal) -> Option<&'static CanisterMetadata> {
     canister_db.get_info(canister)
 }
 
+#[query]
+pub fn get_multiple(canister_ids: Vec<Principal>) -> Vec<Option<&'static CanisterMetadata>> {
+    let response = vec![];
+    let canister_db = ic::get_mut::<CanisterDB>();
+
+    for canister_id in canister_ids {
+        let canister = canister_db.get_info(canister_id);
+        response.push(canister);
+    }
+
+    return response;
+}
+
 #[update]
 pub fn add(
     trusted_source: Option<Principal>,

From 6cb4fac232ba3f23625506f1af52efb7910faa0c Mon Sep 17 00:00:00 2001
From: miguelToscano <miguetoscano288@gmail.com>
Date: Wed, 19 Oct 2022 14:27:16 -0300
Subject: [PATCH 2/2] fixed

---
 registries/canister_registry/src/registry.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/registries/canister_registry/src/registry.rs b/registries/canister_registry/src/registry.rs
index c600fc6..51ebb12 100644
--- a/registries/canister_registry/src/registry.rs
+++ b/registries/canister_registry/src/registry.rs
@@ -114,10 +114,10 @@ pub fn get(canister: Principal) -> Option<&'static CanisterMetadata> {
 
 #[query]
 pub fn get_multiple(canister_ids: Vec<Principal>) -> Vec<Option<&'static CanisterMetadata>> {
-    let response = vec![];
-    let canister_db = ic::get_mut::<CanisterDB>();
+    let mut response = vec![];
 
     for canister_id in canister_ids {
+        let canister_db = ic::get_mut::<CanisterDB>();
         let canister = canister_db.get_info(canister_id);
         response.push(canister);
     }