feat(rpc): add custom cluster url (#267)

* feat(rpc): add custom cluster url

* add localhost to cluster types

src/rpc/client.zig

@@ -7,7 +7,6 @@ const Epoch = sig.core.Epoch;
 const Slot = sig.core.Slot;
 const Pubkey = sig.core.Pubkey;
 const Signature = sig.core.Signature;
-const ClusterType = sig.accounts_db.genesis_config.ClusterType;
 const Request = sig.rpc.Request;
 const Response = sig.rpc.Response;
 const Logger = sig.trace.log.Logger;
@@ -23,12 +22,13 @@ pub const Client = struct {
         logger: Logger = .noop,
     };
 
-    pub fn init(allocator: std.mem.Allocator, cluster_type: ClusterType, options: Options) Client {
+    pub fn init(allocator: std.mem.Allocator, cluster_type: types.ClusterType, options: Options) Client {
         const http_endpoint = switch (cluster_type) {
             .MainnetBeta => "https://api.mainnet-beta.solana.com",
             .Testnet => "https://api.testnet.solana.com",
             .Devnet => "https://api.devnet.solana.com",
-            .Development => @panic("Unsupported cluster type 'Development'"),
+            .LocalHost => "http://localhost:8899",
+            .Custom => |cluster| cluster.url,
         };
         return .{
             .http_endpoint = http_endpoint,

src/rpc/types.zig

@@ -93,3 +93,13 @@ pub const SignatureStatuses = struct {
         confirmationStatus: ?[]const u8,
     };
 };
+
+pub const ClusterType = union(enum(u8)) {
+    MainnetBeta,
+    Testnet,
+    Devnet,
+    LocalHost,
+    Custom: struct {
+        url: []const u8,
+    },
+};

src/transaction_sender/service.zig

@@ -8,7 +8,6 @@ const AtomicBool = std.atomic.Value(bool);
 const AtomicSlot = std.atomic.Value(Slot);
 const UdpSocket = network.Socket;
 
-const ClusterType = sig.accounts_db.genesis_config.ClusterType;
 const Slot = sig.core.Slot;
 const Signature = sig.core.Signature;
 const GossipTable = sig.gossip.GossipTable;
@@ -18,6 +17,7 @@ const Counter = sig.prometheus.Counter;
 const Gauge = sig.prometheus.Gauge;
 const GetMetricError = sig.prometheus.registry.GetMetricError;
 const RpcClient = sig.rpc.Client;
+const ClusterType = sig.rpc.types.ClusterType;
 const RwMux = sig.sync.RwMux;
 const Channel = sig.sync.Channel;
 const Duration = sig.time.Duration;