apollo_l1_gas_price_config,apollo_node: add strk_to_usd_oracle_config

Goal: relocate the STRK/USD oracle currently wired ad-hoc into
SequencerConsensusContext to live inside L1GasPriceProvider alongside
the existing eth_to_strk oracle. This commit is PR 1 of a 6-PR
Graphite stack; later PRs construct the oracle client in the
provider, expose it on the client trait, switch the orchestrator to
call it, and remove the dead wiring in apollo_consensus_manager.

Change summary: adds `strk_to_usd_oracle_config: ExchangeRateOracleConfig`
to `L1GasPriceProviderConfig` next to `eth_to_strk_oracle_config`,
extends `Default`, dumps it as a nested sub-config, and registers the
four new entries in `config_schema.json`. Pure additive; the field is
unused.

Decision points:
- Kept the existing "eth to strk" wording in `ExchangeRateOracleConfig::dump`
  rather than generalizing to "exchange rate oracle". Generalizing would
  churn the eth-to-strk schema entries and force a regeneration of
  config_secrets_schema.json. Doing it here would balloon the diff;
  punting to a separate cosmetic PR.

Action required after merge: run
  cargo run --bin update_apollo_node_config_schema
to regenerate config_secrets_schema.json (sandbox cannot access it).
The new private parameter `strk_to_usd_oracle_config.url_header_list`
needs a matching schema entry, otherwise the `default_config_file_is_up_to_date`
test will fail.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: ShahakShama

crates/apollo_l1_gas_price_config/src/config.rs

@@ -103,6 +103,8 @@ pub struct L1GasPriceProviderConfig {
     pub max_time_gap_seconds: u64,
     #[validate(nested)]
     pub eth_to_strk_oracle_config: ExchangeRateOracleConfig,
+    #[validate(nested)]
+    pub strk_to_usd_oracle_config: ExchangeRateOracleConfig,
 }
 
 impl Default for L1GasPriceProviderConfig {
@@ -114,6 +116,7 @@ impl Default for L1GasPriceProviderConfig {
             storage_limit: usize::try_from(10 * MEAN_NUMBER_OF_BLOCKS).unwrap(),
             max_time_gap_seconds: 900, // 15 minutes
             eth_to_strk_oracle_config: ExchangeRateOracleConfig::default(),
+            strk_to_usd_oracle_config: ExchangeRateOracleConfig::default(),
         }
     }
 }
@@ -152,6 +155,10 @@ impl SerializeConfig for L1GasPriceProviderConfig {
             self.eth_to_strk_oracle_config.dump(),
             "eth_to_strk_oracle_config",
         ));
+        config.extend(prepend_sub_config_name(
+            self.strk_to_usd_oracle_config.dump(),
+            "strk_to_usd_oracle_config",
+        ));
         config
     }
 }

crates/apollo_node/resources/config_schema.json

@@ -3314,6 +3314,26 @@
     "privacy": "Public",
     "value": 3000
   },
+  "l1_gas_price_provider_config.strk_to_usd_oracle_config.lag_interval_seconds": {
+    "description": "The size of the interval (seconds) that the eth to strk rate is taken on. The lag refers to the fact that the interval `[T, T+k)` contains the conversion rate for queries in the interval `[T+k, T+2k)`. Should be configured in alignment with relevant query parameters in `url_header_list`, if required.",
+    "privacy": "Public",
+    "value": 1
+  },
+  "l1_gas_price_provider_config.strk_to_usd_oracle_config.max_cache_size": {
+    "description": "The maximum number of cached conversion rates.",
+    "privacy": "Public",
+    "value": 100
+  },
+  "l1_gas_price_provider_config.strk_to_usd_oracle_config.query_timeout_sec": {
+    "description": "The timeout (seconds) for the query to the eth to strk oracle.",
+    "privacy": "Public",
+    "value": 10
+  },
+  "l1_gas_price_provider_config.strk_to_usd_oracle_config.url_header_list": {
+    "description": "A list of Url+HTTP headers for the eth to strk oracle. The url is followed by a comma and then headers as key^value pairs, separated by commas. For example: `https://api.example.com/api,key1^value1,key2^value2`. Each URL+headers is separated by a pipe `|` character. The `timestamp` parameter is appended dynamically when making requests, in order to have a stable mapping from block timestamp to conversion rate. ",
+    "privacy": "Private",
+    "value": "https://api.example.com/api"
+  },
   "l1_gas_price_scraper_config.#is_none": {
     "description": "Flag for an optional field.",
     "privacy": "TemporaryValue",