feat: add use_test_genesis_chainstate option to node config

Author: zone117x

testnet/stacks-node/src/config.rs

@@ -421,6 +421,7 @@ impl Config {
                     pox_sync_sample_secs: node
                         .pox_sync_sample_secs
                         .unwrap_or(default_node_config.pox_sync_sample_secs),
+                    use_test_genesis_chainstate: node.use_test_genesis_chainstate,
                 };
                 node_config.set_bootstrap_node(node.bootstrap_node);
                 if let Some(deny_nodes) = node.deny_nodes {
@@ -913,6 +914,7 @@ pub struct NodeConfig {
     pub wait_time_for_microblocks: u64,
     pub prometheus_bind: Option<String>,
     pub pox_sync_sample_secs: u64,
+    pub use_test_genesis_chainstate: Option<bool>,
 }
 
 impl NodeConfig {
@@ -950,6 +952,7 @@ impl NodeConfig {
             wait_time_for_microblocks: 5000,
             prometheus_bind: None,
             pox_sync_sample_secs: 30,
+            use_test_genesis_chainstate: None,
         }
     }
 
@@ -1081,6 +1084,7 @@ pub struct NodeConfigFile {
     pub wait_time_for_microblocks: Option<u64>,
     pub prometheus_bind: Option<String>,
     pub pox_sync_sample_secs: Option<u64>,
+    pub use_test_genesis_chainstate: Option<bool>,
 }
 
 #[derive(Clone, Deserialize, Default)]

testnet/stacks-node/src/node.rs

@@ -184,8 +184,13 @@ impl Node {
     pub fn new(config: Config, boot_block_exec: Box<dyn FnOnce(&mut ClarityTx) -> ()>) -> Self {
         let use_test_genesis_data = if config.burnchain.mode == "mocknet" {
             // When running in mocknet mode allow the small test genesis chainstate data to be enabled.
+            // First check env var, then config file, then use default.
             if env::var("BLOCKSTACK_USE_TEST_GENESIS_CHAINSTATE") == Ok("1".to_string()) {
                 true
+            } else if let Some(use_test_genesis_chainstate) =
+                config.node.use_test_genesis_chainstate
+            {
+                use_test_genesis_chainstate
             } else {
                 USE_TEST_GENESIS_CHAINSTATE
             }