Merge native programs parts into one unit (#7047)

programs/config/src/config_instruction.rs

@@ -0,0 +1,50 @@
+use crate::id;
+use crate::{ConfigKeys, ConfigState};
+use solana_sdk::{
+    instruction::{AccountMeta, Instruction},
+    pubkey::Pubkey,
+    system_instruction,
+};
+
+fn initialize_account<T: ConfigState>(config_pubkey: &Pubkey) -> Instruction {
+    let account_metas = vec![AccountMeta::new(*config_pubkey, true)];
+    let account_data = (ConfigKeys { keys: vec![] }, T::default());
+    Instruction::new(id(), &account_data, account_metas)
+}
+
+/// Create a new, empty configuration account
+pub fn create_account<T: ConfigState>(
+    from_account_pubkey: &Pubkey,
+    config_account_pubkey: &Pubkey,
+    lamports: u64,
+    keys: Vec<(Pubkey, bool)>,
+) -> Vec<Instruction> {
+    let space = T::max_space() + ConfigKeys::serialized_size(keys);
+    vec![
+        system_instruction::create_account(
+            from_account_pubkey,
+            config_account_pubkey,
+            lamports,
+            space,
+            &id(),
+        ),
+        initialize_account::<T>(config_account_pubkey),
+    ]
+}
+
+/// Store new data in a configuration account
+pub fn store<T: ConfigState>(
+    config_account_pubkey: &Pubkey,
+    is_config_signer: bool,
+    keys: Vec<(Pubkey, bool)>,
+    data: &T,
+) -> Instruction {
+    let mut account_metas = vec![AccountMeta::new(*config_account_pubkey, is_config_signer)];
+    for (signer_pubkey, _) in keys.iter().filter(|(_, is_signer)| *is_signer) {
+        if signer_pubkey != config_account_pubkey {
+            account_metas.push(AccountMeta::new(*signer_pubkey, true));
+        }
+    }
+    let account_data = (ConfigKeys { keys }, data);
+    Instruction::new(id(), &account_data, account_metas)
+}