chore: Add some tested RPC providers for Solana Mainnet and Devnet

canister/sol_rpc_canister.did

@@ -1,6 +1,6 @@
 // Identifies a Solana cluster
 type SolanaCluster = variant {
-  // Live production environment 
+  // Live production environment
   Mainnet;
   // Public testing and development
   Devnet;
@@ -10,10 +10,14 @@ type SolanaCluster = variant {
 
 // Identifies an RPC provider for a particular Solana cluster.
 type SupportedProvider = variant {
-  AnkrMainnet;
-  AlchemyDevnet;
   AlchemyMainnet;
+  AlchemyDevnet;
+  AnkrMainnet;
   AnkrDevnet;
+  DrpcMainnet;
+  DrpcDevnet;
+  HeliusMainnet;
+  HeliusDevnet;
   PublicNodeMainnet;
 };
 
@@ -116,12 +120,12 @@ service : (InstallArgs,) -> {
   getProviders : () -> (vec record { SupportedProvider; RpcProvider }) query;
 
   // Update the API keys for a list of supported providers.
-  // 
+  //
   // # Preconditions
   //
   // The caller is the controller or a principal specified in `Installargs::manage_api_keys`.
   updateApiKeys : (vec record { SupportedProvider; opt text }) -> ();
-  
+
   // TODO XC-292: change signature
   getSlot : (RpcSources, opt RpcConfig) -> (nat64);
 };

canister/src/providers/mod.rs

@@ -45,11 +45,41 @@ thread_local! {
                 public_url: Some("https://rpc.ankr.com/solana_devnet/".to_string()),
             }
         },
+        SupportedRpcProviderId::DrpcMainnet => SupportedRpcProvider {
+            cluster: SolanaCluster::Mainnet,
+            access: RpcAccess::Unauthenticated {
+                public_url: "https://solana.drpc.org".to_string(),
+            },
+        },
+        SupportedRpcProviderId::DrpcDevnet => SupportedRpcProvider {
+            cluster: SolanaCluster::Mainnet,
+            access: RpcAccess::Unauthenticated {
+                public_url: "https://solana-devnet.drpc.org".to_string(),
+            },
+        },
+        SupportedRpcProviderId::HeliusMainnet => SupportedRpcProvider {
+            cluster: SolanaCluster::Mainnet,
+            access: RpcAccess::Authenticated {
+                auth: RpcAuth::UrlParameter {
+                    url_pattern: "https://devnet.helius-rpc.com/?api-key={API_KEY}".to_string(),
+                },
+                public_url: None,
+            },
+        },
+        SupportedRpcProviderId::HeliusDevnet => SupportedRpcProvider {
+            cluster: SolanaCluster::Mainnet,
+            access: RpcAccess::Authenticated {
+                auth: RpcAuth::UrlParameter {
+                    url_pattern: "https://mainnet.helius-rpc.com/?api-key={API_KEY}".to_string(),
+                },
+                public_url: None,
+            },
+        },
         SupportedRpcProviderId::PublicNodeMainnet => SupportedRpcProvider {
             cluster: SolanaCluster::Mainnet,
             access: RpcAccess::Unauthenticated {
                 public_url: "https://solana-rpc.publicnode.com".to_string(),
-            }
+            },
         },
     };
 }

integration_tests/tests/tests.rs

@@ -11,7 +11,7 @@ mod get_provider_tests {
         let client = setup.client();
         let providers = client.get_providers().await;
 
-        assert_eq!(providers.len(), 5);
+        assert_eq!(providers.len(), 9);
 
         assert_eq!(
             providers[0],

libs/types/src/rpc_client/mod.rs

@@ -92,6 +92,14 @@ pub enum SupportedRpcProviderId {
     AnkrMainnet,
     /// [Ankr](https://www.ankr.com/) provider on [Solana Devnet](https://solana.com/docs/references/clusters)
     AnkrDevnet,
+    /// [dRPC](https://drpc.org/) provider on [Solana Mainnet](https://solana.com/docs/references/clusters)
+    DrpcMainnet,
+    /// [dRPC](https://drpc.org/) provider on [Solana Devnet](https://solana.com/docs/references/clusters)
+    DrpcDevnet,
+    /// [Helius](https://www.helius.dev/) provider on [Solana Mainnet](https://solana.com/docs/references/clusters)
+    HeliusMainnet,
+    /// [Helius](https://www.helius.dev/) provider on [Solana Devnet](https://solana.com/docs/references/clusters)
+    HeliusDevnet,
     /// [PublicNode](https://www.publicnode.com/) provider on [Solana Mainnet](https://solana.com/docs/references/clusters)
     PublicNodeMainnet,
 }