fix: read env variables for prover configuration

core/src/utils/options.rs

@@ -1,3 +1,10 @@
+use std::env;
+
+const DEFAULT_SHARD_SIZE: usize = 1 << 22;
+const DEFAULT_SHARD_BATCH_SIZE: usize = 16;
+const DEFAULT_SHARD_CHUNKING_MULTIPLIER: usize = 1;
+const DEFAULT_RECONSTRUCT_COMMITMENTS: bool = true;
+
 #[derive(Debug, Clone, Copy)]
 pub struct SphinxCoreOpts {
     pub shard_size: usize,
@@ -9,10 +16,25 @@ pub struct SphinxCoreOpts {
 impl Default for SphinxCoreOpts {
     fn default() -> Self {
         Self {
-            shard_size: 1 << 22,
-            shard_batch_size: 16,
-            shard_chunking_multiplier: 1,
-            reconstruct_commitments: false,
+            shard_size: env::var("SHARD_SIZE").map_or_else(
+                |_| DEFAULT_SHARD_SIZE,
+                |s| s.parse::<usize>().unwrap_or(DEFAULT_SHARD_SIZE),
+            ),
+            shard_batch_size: env::var("SHARD_BATCH_SIZE").map_or_else(
+                |_| DEFAULT_SHARD_BATCH_SIZE,
+                |s| s.parse::<usize>().unwrap_or(DEFAULT_SHARD_BATCH_SIZE),
+            ),
+            shard_chunking_multiplier: env::var("SHARD_CHUNKING_MULTIPLIER").map_or_else(
+                |_| DEFAULT_SHARD_CHUNKING_MULTIPLIER,
+                |s| {
+                    s.parse::<usize>()
+                        .unwrap_or(DEFAULT_SHARD_CHUNKING_MULTIPLIER)
+                },
+            ),
+            reconstruct_commitments: env::var("RECONSTRUCT_COMMITMENTS").map_or_else(
+                |_| DEFAULT_RECONSTRUCT_COMMITMENTS,
+                |s| s.parse::<bool>().unwrap_or(DEFAULT_RECONSTRUCT_COMMITMENTS),
+            ),
         }
     }
 }