apollo_deployments: derive state_sync optional sync-clients from env presence

crates/apollo_deployments/jsonnet/lib/applicative_config.libsonnet

@@ -20,6 +20,68 @@ function(overrides)
   local revertConfig = { revert_up_to_and_including: 18446744073709551615, should_revert: false };
   local behaviorMode = 'starknet';
   local validationOnly = false;
+  // `state_sync` optional sub-configs. The env supplies each one as `null` (the `#is_none:true`
+  // option ⇒ None) or as an object (active, possibly carrying only the sparse sub-field overrides);
+  // an active option is `default` deep-merged with those overrides. Secret/pointer fields use the
+  // same placeholders as the other network configs (`secret_key`/`http_headers` → '' filled by
+  // secrets.json; `chain_id`/`starknet_url` → the pointer locals).
+  local optionalStateSyncSubConfig(value, default) =
+    if value == null then null else std.mergePatch(default, value);
+  local defaultCentralSyncClientConfig = {
+    central_source_config: {
+      class_cache_size: 128,
+      concurrent_requests: 20,
+      http_headers: '',
+      max_classes_to_download: 20,
+      max_state_updates_to_download: 20,
+      max_state_updates_to_store_in_memory: 20,
+      retry_config: { max_retries: 10, retry_base_millis: 30, retry_max_delay_millis: 30000 },
+      starknet_url: starknetUrl,
+    },
+    sync_config: {
+      base_layer_propagation_sleep_duration: 10,
+      blocks_before_tip_to_disable_batching: 100,
+      blocks_max_stream_size: 1000,
+      collect_pending_data: false,
+      latest_block_poll_interval_millis: 500,
+      recoverable_error_sleep_duration: 3,
+      state_updates_max_stream_size: 1000,
+      store_sierras_and_casms_block_threshold: 0,
+      verify_blocks: false,
+    },
+  };
+  local defaultStateSyncNetworkConfig = {
+    advertised_multiaddr: null,
+    bootstrap_peer_multiaddr: null,
+    broadcasted_message_metadata_buffer_size: 100000,
+    chain_id: chainId,
+    discovery_config: {
+      bootstrap_dial_retry_config: {
+        base_delay_millis: 2,
+        factor: 5,
+        max_delay_seconds: 5,
+        new_connection_stabilization_millis: 2000,
+      },
+      heartbeat_interval: 100,
+    },
+    idle_connection_timeout: 120,
+    peer_manager_config: { malicious_timeout_seconds: 1, unstable_timeout_millis: 1000 },
+    port: 53140,
+    prune_dead_connections_ping_interval: 15,
+    prune_dead_connections_ping_timeout: 20,
+    reported_peer_ids_buffer_size: 100000,
+    secret_key: '',
+    session_timeout: 120,
+  };
+  local defaultP2pSyncClientConfig = {
+    buffer_size: 100000,
+    num_block_classes_per_query: 100,
+    num_block_state_diffs_per_query: 100,
+    num_block_transactions_per_query: 100,
+    num_headers_per_query: 10000,
+    wait_period_for_new_data: 50,
+    wait_period_for_other_protocol: 50,
+  };
   {
     base_layer_config: {
       bpo1_start_block_number: overrides.base_layer_config.bpo1_start_block_number,
@@ -530,9 +592,9 @@ function(overrides)
         },
       },
       static_config: {
-        central_sync_client_config: overrides.state_sync_config.static_config.central_sync_client_config,
-        network_config: overrides.state_sync_config.static_config.network_config,
-        p2p_sync_client_config: overrides.state_sync_config.static_config.p2p_sync_client_config,
+        central_sync_client_config: optionalStateSyncSubConfig(overrides.state_sync_config.static_config.central_sync_client_config, defaultCentralSyncClientConfig),
+        network_config: optionalStateSyncSubConfig(overrides.state_sync_config.static_config.network_config, defaultStateSyncNetworkConfig),
+        p2p_sync_client_config: optionalStateSyncSubConfig(overrides.state_sync_config.static_config.p2p_sync_client_config, defaultP2pSyncClientConfig),
         revert_config: revertConfig,
         rpc_config: {
           apollo_gateway_retry_config: {

crates/apollo_deployments/jsonnet/testing/overrides.libsonnet

@@ -5,7 +5,7 @@
   eth_fee_token_address: '0x1',
   strk_fee_token_address: '0x2',
   recorder_url: 'https://recorder_url',
-  starknet_url: 'https://starknet_url',
+  starknet_url: 'https://starknet_url/',
   native_classes_whitelist: '[]',
   validator_id: '0x64',
   versioned_constants_overrides: null,
@@ -127,17 +127,14 @@
   },
   state_sync_config: {
     static_config: {
-      central_sync_client_config: null,
-      network_config: null,
-      p2p_sync_client_config: {
-        num_headers_per_query: 10000,
-        num_block_state_diffs_per_query: 100,
-        num_block_transactions_per_query: 100,
-        num_block_classes_per_query: 100,
-        wait_period_for_new_data: 50,
-        wait_period_for_other_protocol: 50,
-        buffer_size: 100000,
+      // Matches the real sepolia-alpha envs: central-sync active (a sparse override exercises the
+      // deep-merge onto the applicative default), p2p and network None. `null` = None; an object =
+      // active (default merged with the object).
+      central_sync_client_config: {
+        sync_config: { store_sierras_and_casms_block_threshold: 0 },
       },
+      network_config: null,
+      p2p_sync_client_config: null,
       rpc_config: {
         port: 8083,
       },