[Breaking Change]: fix(client): Update signer method to accept a slice of signers

client/example/src/blocking.rs

@@ -102,8 +102,8 @@ pub fn composite<C: Deref<Target = impl Signer> + Clone>(
     let program = client.program(pid)?;
 
     // `Initialize` parameters.
-    let dummy_a = Keypair::new();
-    let dummy_b = Keypair::new();
+    let dummy_a = Arc::new(Keypair::new());
+    let dummy_b = Arc::new(Keypair::new());
 
     // Build and send a transaction.
     program
@@ -122,8 +122,7 @@ pub fn composite<C: Deref<Target = impl Signer> + Clone>(
             500,
             &program.id(),
         ))
-        .signer(&dummy_a)
-        .signer(&dummy_b)
+        .signers(&[dummy_a.clone(), dummy_b.clone()])
         .accounts(Initialize {
             dummy_a: dummy_a.pubkey(),
             dummy_b: dummy_b.pubkey(),
@@ -175,13 +174,13 @@ pub fn basic_2<C: Deref<Target = impl Signer> + Clone>(
     let program = client.program(pid)?;
 
     // `Create` parameters.
-    let counter = Keypair::new();
+    let counter = Arc::new(Keypair::new());
     let authority = program.payer();
 
     // Build and send a transaction.
     program
         .request()
-        .signer(&counter)
+        .signers(&[counter.clone()])
         .accounts(basic_2_accounts::Create {
             counter: counter.pubkey(),
             user: authority,
@@ -278,13 +277,13 @@ pub fn optional<C: Deref<Target = impl Signer> + Clone>(
     let program = client.program(pid)?;
 
     // `Initialize` parameters.
-    let data_account_keypair = Keypair::new();
+    let data_account_keypair = Arc::new(Keypair::new());
 
     let data_account_key = data_account_keypair.pubkey();
 
     let data_pda_seeds = &[DataPda::PREFIX.as_ref(), data_account_key.as_ref()];
     let data_pda_key = Pubkey::find_program_address(data_pda_seeds, &pid).0;
-    let required_keypair = Keypair::new();
+    let required_keypair = Arc::new(Keypair::new());
     let value: u64 = 10;
 
     // Build and send a transaction.
@@ -300,8 +299,7 @@ pub fn optional<C: Deref<Target = impl Signer> + Clone>(
             DataAccount::LEN as u64,
             &program.id(),
         ))
-        .signer(&data_account_keypair)
-        .signer(&required_keypair)
+        .signers(&[data_account_keypair.clone(), required_keypair.clone()])
         .accounts(OptionalInitialize {
             payer: Some(program.payer()),
             required: required_keypair.pubkey(),

client/example/src/nonblocking.rs

@@ -74,7 +74,7 @@ pub async fn test_tokio(client: Client<Arc<Keypair>>, pid: Pubkey) -> Result<()>
         // Build and send a transaction.
         program
             .request()
-            .signer(counter)
+            .signers(&[counter])
             .accounts(basic_2_accounts::Create {
                 counter: counter_pubkey,
                 user: authority,
@@ -132,8 +132,7 @@ pub async fn composite<C: Deref<Target = impl Signer> + Clone>(
             500,
             &program.id(),
         ))
-        .signer(dummy_a.clone())
-        .signer(dummy_b.clone())
+        .signers(&[dummy_a.clone(), dummy_b.clone()])
         .accounts(Initialize {
             dummy_a: dummy_a.pubkey(),
             dummy_b: dummy_b.pubkey(),
@@ -190,7 +189,7 @@ pub async fn basic_2<C: Deref<Target = impl Signer> + Clone>(
     // Build and send a transaction.
     program
         .request()
-        .signer(counter.clone())
+        .signers(&[counter.clone()])
         .accounts(basic_2_accounts::Create {
             counter: counter.pubkey(),
             user: authority,
@@ -313,8 +312,7 @@ pub async fn optional<C: Deref<Target = impl Signer> + Clone>(
             DataAccount::LEN as u64,
             &program.id(),
         ))
-        .signer(data_account_keypair.clone())
-        .signer(required_keypair.clone())
+        .signers(&[required_keypair.clone(), data_account_keypair.clone()])
         .accounts(OptionalInitialize {
             payer: Some(program.payer()),
             required: required_keypair.pubkey(),

client/src/blocking.rs

@@ -137,9 +137,13 @@ impl<'a, C: Deref<Target = impl Signer> + Clone> RequestBuilder<'a, C, Box<dyn S
         }
     }
 
-    #[must_use]
-    pub fn signer<T: Signer + 'a>(mut self, signer: T) -> Self {
-        self.signers.push(Box::new(signer));
+    #[must_use = "The signers must be provided to ensure the transaction is valid and authorized."]
+    pub fn signers<T: Signer + 'a>(mut self, signers: &'a [T]) -> Self {
+        self.signers.extend(
+            signers
+                .iter()
+                .map(|signer| Box::new(signer) as Box<dyn Signer>),
+        );
         self
     }
 

client/src/lib.rs

@@ -37,7 +37,7 @@
 //!             system_program: system_program::ID,
 //!         })
 //!         .args(instruction::Initialize { field: 42 })
-//!         .signer(&my_account_kp)
+//!         .signers(&[my_account_kp])
 //!         .send()?;
 //!
 //!     // Fetch an account

client/src/nonblocking.rs

@@ -141,9 +141,13 @@ impl<'a, C: Deref<Target = impl Signer> + Clone> RequestBuilder<'a, C, Arc<dyn T
         }
     }
 
-    #[must_use]
-    pub fn signer<T: ThreadSafeSigner>(mut self, signer: T) -> Self {
-        self.signers.push(Arc::new(signer));
+    #[must_use = "The signers must be provided to ensure the transaction is valid and authorized."]
+    pub fn signers<'b, T: ThreadSafeSigner + Clone + 'static>(mut self, signers: &'b [T]) -> Self {
+        self.signers.extend(
+            signers
+                .iter()
+                .map(|signer| Arc::new(signer.clone()) as Arc<dyn ThreadSafeSigner>),
+        );
         self
     }