inject balances from json into chainspec

crates/subspace-node/Cargo.toml

@@ -58,6 +58,7 @@ sc-telemetry = { git = "https://github.com/subspace/polkadot-sdk", rev = "587181
 sc-transaction-pool-api = { git = "https://github.com/subspace/polkadot-sdk", rev = "5871818e1d736f1843eb9078f886290695165c42" }
 sc-network-sync = { git = "https://github.com/subspace/polkadot-sdk", rev = "5871818e1d736f1843eb9078f886290695165c42" }
 sc-utils = { git = "https://github.com/subspace/polkadot-sdk", rev = "5871818e1d736f1843eb9078f886290695165c42" }
+serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.128"
 sp-api = { git = "https://github.com/subspace/polkadot-sdk", rev = "5871818e1d736f1843eb9078f886290695165c42" }
 sp-blockchain = { git = "https://github.com/subspace/polkadot-sdk", rev = "5871818e1d736f1843eb9078f886290695165c42" }

crates/subspace-node/src/chain_spec.rs

@@ -20,6 +20,7 @@ use crate::chain_spec_utils::{chain_spec_properties, get_account_id_from_seed};
 use crate::domain::auto_id_chain_spec;
 use crate::domain::cli::{GenesisDomain, SpecId};
 use crate::domain::evm_chain_spec::{self};
+use crate::genesis_allocations::{GENESIS_ALLOCATIONS, get_genesis_allocations};
 use sc_chain_spec::GenericChainSpec;
 use sc_service::ChainType;
 use sc_subspace_chain_specs::DEVNET_CHAIN_SPEC;
@@ -86,7 +87,7 @@ pub fn gemini_3h_compiled() -> Result<GenericChainSpec, String> {
             AccountId::from_ss58check("5DNwQTHfARgKoa2NdiUM51ZUow7ve5xG9S2yYdSbVQcnYxBA")
                 .expect("Wrong root account address");
 
-        let balances = vec![(sudo_account.clone(), 1_000 * SSC)];
+        let balances=get_genesis_allocations(GENESIS_ALLOCATIONS);
         serde_json::to_value(subspace_genesis_config(
             sudo_account.clone(),
             balances,

crates/subspace-node/src/genesis_allocations.rs

@@ -0,0 +1,36 @@
+use serde::Deserialize;
+use core::num::NonZeroU128;
+use subspace_runtime_primitives::{AccountId, Balance};
+
+/// Genesis allocations JSON content
+pub const GENESIS_ALLOCATIONS: &str = include_str!("genesis_allocations.json");
+
+#[derive(Deserialize)]
+struct GenesisAllocation(
+    AccountId,
+    #[serde(with = "balance_string")] NonZeroU128
+);
+
+pub fn get_genesis_allocations(contents: &str) -> Vec<(AccountId, Balance)> {
+    let allocations: Vec<GenesisAllocation> = serde_json::from_str(contents)
+        .expect("Failed to parse genesis allocations JSON");
+
+    allocations.into_iter()
+        .map(|GenesisAllocation(account, balance)| (account, balance.get() as Balance))
+        .collect()
+}
+
+mod balance_string {
+    use super::*;
+    use serde::{de, Deserializer};
+
+    pub fn deserialize<'de, D>(deserializer: D) -> Result<NonZeroU128, D::Error>
+    where
+        D: Deserializer<'de>,
+    {
+        let s = String::deserialize(deserializer)?;
+        s.parse::<u128>()
+            .map_err(de::Error::custom)
+            .and_then(|n| NonZeroU128::new(n).ok_or_else(|| de::Error::custom("Balance must be non-zero")))
+    }
+}

crates/subspace-node/src/main.rs

@@ -24,6 +24,7 @@ mod chain_spec;
 mod chain_spec_utils;
 mod cli;
 mod domain;
+mod genesis_allocations;
 
 use crate::cli::{Cli, SubspaceCliPlaceholder};
 use crate::domain::cli::DomainKey;