Now we're thinking with portals!

Cargo.toml

@@ -8,5 +8,7 @@ members = [
 	"runtime",
 ]
 
+resolver = "2"
+
 [patch.crates-io]
 ss58-registry = { git = "https://github.com/paritytech/ss58-registry" }

node/Cargo.toml

@@ -25,6 +25,9 @@ async-trait = { version = "0.1.48" }
 jsonrpc-core = "18.0.0"
 hex = "0.4.0"
 
+#librocksdb-sys = "=0.6.2+6.28.2"
+bindgen = "0.62"
+
 # Local
 gm-chain-runtime = { path = "../runtime" }
 

runtime/Cargo.toml

@@ -22,6 +22,8 @@ scale-info = { version = "2.1", default-features = false, features = ["derive"]
 serde = { version = "1.0.137", optional = true, features = ["derive"] }
 smallvec = "1.6.1"
 
+#librocksdb-sys = "=0.6.2+6.28.2"
+
 # Chess
 pallet-chess = { git = "https://github.com/SubstrateChess/pallet-chess.git", default-features = false, branch = "gmordie" }
 

runtime/src/lib.rs

@@ -179,7 +179,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     spec_name: create_runtime_str!("gm_parachain"),
     impl_name: create_runtime_str!("gm_parachain"),
     authoring_version: 1,
-    spec_version: 9,
+    spec_version: 10,
     impl_version: 0,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,

runtime/src/xcm_config.rs

@@ -26,6 +26,11 @@ parameter_types! {
     pub const RelayNetwork: NetworkId = NetworkId::Any;
     pub RelayChainOrigin: Origin = cumulus_pallet_xcm::Origin::Relay.into();
     pub Ancestry: MultiLocation = Parachain(ParachainInfo::parachain_id().into()).into();
+
+    /// The check account, which holds any native assets that have been teleported out and not back in (yet).
+    pub CheckAccount: AccountId = PolkadotXcm::check_account();
+
+    pub const FrenLocation: MultiLocation = MultiLocation { parents: 0, interior: Here };
 }
 
 /// Type for specifying how a `MultiLocation` can be converted into an `AccountId`. This is used
@@ -45,13 +50,13 @@ pub type LocalAssetTransactor = CurrencyAdapter<
     // Use this currency:
     Balances,
     // Use this currency when it is a fungible asset matching the given location or name:
-    IsConcrete<RelayLocation>,
+    IsConcrete<FrenLocation>,
     // Do a simple punn to convert an AccountId32 MultiLocation into a native chain account ID:
     LocationToAccountId,
     // Our chain's account ID type (we can't get away without mentioning it explicitly):
     AccountId,
-    // We don't track any teleports.
-    (),
+    // We track our teleports in/out to keep total issuance correct.
+    CheckAccount,
 >;
 
 /// This is the type we use to convert an (incoming) XCM origin into a local `Origin` instance,
@@ -180,6 +185,14 @@ pub type Barrier = DenyThenTry<
     ),
 >;
 
+parameter_types! {
+    pub const AssetHub: MultiLocation = MultiLocation { parents: 1, interior: X1(Parachain(1000)) };
+    pub const FrenFilter: MultiAssetFilter = Wild(AllOf { fun: WildFungible, id: Concrete(FrenLocation::get()) });
+    pub const FrenForAssetHub: (MultiAssetFilter, MultiLocation) = (FrenFilter::get(), AssetHub::get());
+}
+
+pub type TrustedTeleporters = (xcm_builder::Case<FrenForAssetHub>,);
+
 pub struct XcmConfig;
 impl xcm_executor::Config for XcmConfig {
     type Call = Call;
@@ -188,7 +201,7 @@ impl xcm_executor::Config for XcmConfig {
     type AssetTransactor = LocalAssetTransactor;
     type OriginConverter = XcmOriginToTransactDispatchOrigin;
     type IsReserve = NativeAsset;
-    type IsTeleporter = (); // Teleporting is disabled.
+    type IsTeleporter = TrustedTeleporters;
     type LocationInverter = LocationInverter<Ancestry>;
     type Barrier = Barrier;
     type Weigher = FixedWeightBounds<UnitWeightCost, Call, MaxInstructions>;

rust-toolchain.toml

@@ -1,4 +1,4 @@
 [toolchain]
 channel = "nightly-2022-11-01"
 targets = ["wasm32-unknown-unknown"]
-components = [ "rustfmt", "rustc", "rust-std", "cargo", "clippy", "llvm-tools-preview"]
+components = [ "rustfmt", "rustc", "rust-std", "cargo", "clippy", "llvm-tools-preview", "rust-analyzer"]