chore: warn when the 'canister_ids.json' file is first generated for …

…persistent networks. (#4058)

* Warn when the 'canister_ids.json' file is first generated for persistent networks.

* Add e2e tests.

* Update changelog.

CHANGELOG.md

@@ -111,6 +111,19 @@ Your principal for ICP wallets and decentralized exchanges: ueuar-wxbnk-bdcsr-dn
 
 Add pre-install tasks, which can be defined by the new `pre-install` key for canister objects in `dfx.json` with a command or list of commands.
 
+### chore: Warn when the 'canister_ids.json' file is first generated for persistent networks.
+
+Warn when the 'canister_ids.json' file is first generated for persistent networks.
+
+```
+dfx deploy --network ic
+...
+test_backend canister created on network ic with canister id: j36qm-pqaaa-aaaan-qzqya-cai
+WARN: The "/home/sdk/repos/test/canister_ids.json" file has been generated. Please make sure you store it correctly, e.g., submitting it to a GitHub repository.
+Building canisters...
+...
+```
+
 ## Dependencies
 
 ### Frontend canister

e2e/tests-dfx/network.bash

@@ -47,6 +47,7 @@ teardown() {
   dfx_start
 
   assert_command dfx canister create --all --network local
+  assert_not_contains "canister_ids.json\" file has been generated. Please make sure you store it correctly"
 
   # canister creates writes to a spinner (stderr), not stdout
   assert_command dfx canister id e2e_project_backend --network local
@@ -64,6 +65,7 @@ teardown() {
   jq '.local.type="persistent"' "$E2E_NETWORKS_JSON" | sponge "$E2E_NETWORKS_JSON"
 
   assert_command dfx canister create --all --network local
+  assert_contains "canister_ids.json\" file has been generated. Please make sure you store it correctly"
 
   # canister creates writes to a spinner (stderr), not stdout
   assert_command dfx canister id e2e_project_backend --network local

src/dfx-core/src/config/model/canister_id_store.rs

@@ -215,16 +215,37 @@ impl CanisterIdStore {
             .map(|(canister_name, _)| canister_name)
     }
 
-    pub fn save_ids(&self) -> Result<(), SaveIdsError> {
+    fn warn_for_canister_ids_path(&self) -> bool {
+        // Only warn when the 'canister_ids.json' file is first generated under the project root directory for persistent networks.
+        if let NetworkDescriptor {
+            r#type: NetworkTypeDescriptor::Persistent,
+            ..
+        } = self.network_descriptor
+        {
+            if let Some(path) = self.canister_ids_path.as_ref() {
+                if !path.exists() {
+                    return true;
+                }
+            }
+        };
+
+        false
+    }
+
+    pub fn save_ids(&self, log: &Logger) -> Result<(), SaveIdsError> {
         let path = self
             .canister_ids_path
             .as_ref()
             .unwrap_or_else(|| {
                 // the only callers of this method have already called Environment::get_config_or_anyhow
                 unreachable!("Must be in a project (call Environment::get_config_or_anyhow()) to save canister ids")
             });
+        let to_warn = self.warn_for_canister_ids_path();
         crate::fs::composite::ensure_parent_dir_exists(path)?;
         crate::json::save_json_file(path, &self.ids)?;
+        if to_warn {
+            warn!(log, "The {:?} file has been generated. Please make sure you store it correctly, e.g., submitting it to a GitHub repository.", path);
+        }
         Ok(())
     }
 
@@ -309,6 +330,7 @@ impl CanisterIdStore {
 
     pub fn add(
         &mut self,
+        log: &Logger,
         canister_name: &str,
         canister_id: &str,
         timestamp: Option<AcquisitionDateTime>,
@@ -327,7 +349,7 @@ impl CanisterIdStore {
                     .insert(canister_name.to_string(), network_name_to_canister_id);
             }
         }
-        self.save_ids()
+        self.save_ids(log)
             .map_err(|source| AddCanisterIdError::SaveIds {
                 canister_name: canister_name.to_string(),
                 canister_id: canister_id.to_string(),
@@ -350,11 +372,15 @@ impl CanisterIdStore {
         Ok(())
     }
 
-    pub fn remove(&mut self, canister_name: &str) -> Result<(), RemoveCanisterIdError> {
+    pub fn remove(
+        &mut self,
+        log: &Logger,
+        canister_name: &str,
+    ) -> Result<(), RemoveCanisterIdError> {
         let network_name = &self.network_descriptor.name;
         if let Some(network_name_to_canister_id) = self.ids.get_mut(canister_name) {
             network_name_to_canister_id.remove(network_name);
-            self.save_ids()
+            self.save_ids(log)
                 .map_err(|e| RemoveCanisterIdError::SaveIds {
                     canister_name: canister_name.to_string(),
                     source: e,
@@ -392,7 +418,7 @@ impl CanisterIdStore {
 
         for canister in canisters_to_prune {
             warn!(log, "Canister '{}' has timed out.", &canister);
-            self.remove(&canister)?;
+            self.remove(log, &canister)?;
         }
 
         Ok(())

src/dfx/src/commands/canister/delete.rs

@@ -326,7 +326,7 @@ async fn delete_canister(
     }
 
     if let Some(canister_name) = canister_name_to_delete {
-        canister_id_store.remove(&canister_name)?;
+        canister_id_store.remove(log, &canister_name)?;
     }
 
     Ok(())

src/dfx/src/lib/named_canister.rs

@@ -70,7 +70,7 @@ pub async fn install_ui_canister(
         .with_mode(InstallMode::Install)
         .await
         .context("Install wasm call failed.")?;
-    id_store.add(UI_CANISTER, &canister_id.to_text(), None)?;
+    id_store.add(env.get_logger(), UI_CANISTER, &canister_id.to_text(), None)?;
     info!(
         env.get_logger(),
         "The UI canister on the \"{}\" network is \"{}\"",

src/dfx/src/lib/operations/canister/create_canister.rs

@@ -188,7 +188,7 @@ The command line value will be used.",
         non_default_network,
         canister_id
     );
-    canister_id_store.add(canister_name, &canister_id, None)?;
+    canister_id_store.add(log, canister_name, &canister_id, None)?;
 
     Ok(())
 }

src/dfx/src/lib/operations/canister/install_canister.rs

@@ -224,6 +224,7 @@ The command line value will be used.",
             )
             .await?;
             canister_id_store.add(
+                log,
                 canister_info.get_name(),
                 &canister_id.to_string(),
                 Some(new_timestamp),

src/dfx/src/lib/operations/canister/motoko_playground.rs

@@ -132,6 +132,7 @@ pub async fn reserve_canister_with_playground(
         .context("Failed to reserve canister at the playground.")?;
     let reserved_canister = Decode!(&result, CanisterInfo)?;
     canister_id_store.add(
+        log,
         canister_name,
         &reserved_canister.id.to_string(),
         Some(reserved_canister.get_timestamp()?),