feat(api) add support for gearEthBridge

api/src/EthBridge.ts

@@ -0,0 +1,92 @@
+import { SubmittableExtrinsic } from '@polkadot/api/types';
+import { GearApi } from './GearApi';
+import { ISubmittableResult } from '@polkadot/types/types';
+import { HexString, Proof } from './types';
+import { AuthoritySetHashError, ClearTimerError, GetQueueMerkleRootError } from './errors';
+
+export class GearEthBridge {
+  constructor(private api: GearApi) {}
+
+  async authoritySetHash(): Promise<HexString> {
+    const result = await this.api.query.gearEthBridge.authoritySetHash();
+
+    if (result.isNone) {
+      throw new AuthoritySetHashError();
+    }
+
+    return result.unwrap().toHex();
+  }
+
+  async clearTimer(): Promise<number> {
+    const result = await this.api.query.gearEthBridge.clearTimer();
+
+    if (result.isNone) {
+      throw new ClearTimerError();
+    }
+
+    return result.unwrap().toNumber();
+  }
+
+  async isInitialized(): Promise<boolean> {
+    const result = await this.api.query.gearEthBridge.initialized();
+    return result.toHuman();
+  }
+
+  async getMessageNonce(): Promise<bigint> {
+    const result = await this.api.query.gearEthBridge.messageNonce();
+    return result.toBigInt();
+  }
+
+  async isPaused(): Promise<boolean> {
+    const result = await this.api.query.gearEthBridge.paused();
+    return result.toHuman();
+  }
+
+  async getQueue(): Promise<Array<HexString>> {
+    const result = await this.api.query.gearEthBridge.queue();
+    return result.toArray().map((hash) => hash.toHex());
+  }
+
+  async isQueueChanged(): Promise<boolean> {
+    const result = await this.api.query.gearEthBridge.queueChanged();
+    return result.toHuman();
+  }
+
+  async getQueueMerkleRoot(): Promise<HexString> {
+    const result = await this.api.query.gearEthBridge.queueMerkleRoot();
+
+    if (result.isNone) {
+      throw new GetQueueMerkleRootError();
+    }
+
+    return result.unwrap().toHex();
+  }
+
+  async getSessionsTimer(): Promise<number> {
+    const result = await this.api.query.gearEthBridge.sessionsTimer();
+    return result.toNumber();
+  }
+
+  sendEthMessage(
+    destination: HexString | Uint8Array,
+    payload: HexString | Uint8Array,
+  ): SubmittableExtrinsic<'promise', ISubmittableResult> {
+    return this.api.tx.gearEthBridge.sendEthMessage(destination, payload);
+  }
+
+  async merkleProof(hash: HexString | Uint8Array, at?: HexString | Uint8Array): Promise<Proof> {
+    return this.api.rpc.gearEthBridge.merkleProof(hash, at);
+  }
+
+  get maxPayloadSize(): number {
+    return this.api.consts.gearEthBridge.maxPayloadSize.toNumber();
+  }
+
+  get queueCapacity(): number {
+    return this.api.consts.gearEthBridge.queueCapacity.toNumber();
+  }
+
+  get sessionsPerEra(): number {
+    return this.api.consts.gearEthBridge.sessionsPerEra.toNumber();
+  }
+}

api/src/GearApi.ts

@@ -16,6 +16,7 @@ import { GearProgramState } from './State';
 import { GearProgramStorage } from './Storage';
 import { GearVoucher } from './Voucher';
 import { GearWaitlist } from './Waitlist';
+import { GearEthBridge } from './EthBridge';
 import { GearBuiltin } from './Builtin';
 
 export class GearApi extends ApiPromise {
@@ -32,6 +33,7 @@ export class GearApi extends ApiPromise {
   public code: GearCode;
   public waitlist: GearWaitlist;
   public voucher: GearVoucher;
+  public ethBridge: GearEthBridge;
   public builtin: GearBuiltin;
   public provider: WsProvider;
 
@@ -89,6 +91,7 @@ export class GearApi extends ApiPromise {
     this.mailbox = new GearMailbox(this);
     this.code = new GearCode(this);
     this.waitlist = new GearWaitlist(this);
+    this.ethBridge = new GearEthBridge(this);
     this.builtin = new GearBuiltin(this);
   }
 

api/src/default/rpc.json

@@ -312,6 +312,21 @@
         ],
         "type": "H256"
       }
+    },
+    "gearEthBridge": {
+      "merkleProof": {
+        "params": [
+          {
+            "name": "hash",
+            "type": "H256"
+          },
+          {
+            "name": "at",
+            "type": "Option<BlockHash>"
+          }
+        ],
+        "type": "Proof"
+      }
     }
   }
 }

api/src/default/types-common.json

@@ -3,6 +3,13 @@
     "InflationInfo": {
       "inflation": "u64",
       "roi": "u64"
+    },
+    "Proof": {
+      "root": "H256",
+      "proof": "Vec<H256>",
+      "number_of_leaves": "u64",
+      "leaf_index": "u64",
+      "leaf": "H256"
     }
   }
 }

api/src/errors/ethBridge.errors.ts

@@ -0,0 +1,29 @@
+export class AuthoritySetHashError extends Error {
+  name = 'AuthoritySetHashError';
+  message = 'Unable to get authority set hash';
+
+  constructor(message?: string) {
+    super();
+    this.message = `${this.message}. ${message}`;
+  }
+}
+
+export class ClearTimerError extends Error {
+  name = 'ClearTimerError';
+  message = "Can't clear timer";
+
+  constructor(message?: string) {
+    super();
+    this.message = `${this.message}. ${message}`;
+  }
+}
+
+export class GetQueueMerkleRootError extends Error {
+  name = 'GetQueueMerkleRootError';
+  message = 'Unable to get queue merkle root';
+
+  constructor(message?: string) {
+    super();
+    this.message = `${this.message}. ${message}`;
+  }
+}

api/src/errors/index.ts

@@ -5,4 +5,5 @@ export * from './state.errors';
 export * from './claim.errors';
 export * from './blocks.errors';
 export * from './validation.errors';
+export * from './ethBridge.errors';
 export * from './builtin.errors';

api/src/types/augment/augment-api-consts.ts

@@ -88,6 +88,26 @@ declare module '@polkadot/api-base/types/consts' {
        **/
       [key: string]: Codec;
     };
+    gearEthBridge: {
+      /**
+       * Constant defining maximal payload size in bytes of message for bridging.
+       **/
+      maxPayloadSize: u32 & AugmentedConst<ApiType>;
+      /**
+       * Constant defining maximal amount of messages that are able to be
+       * bridged within the single staking era.
+       **/
+      queueCapacity: u32 & AugmentedConst<ApiType>;
+      /**
+       * Constant defining amount of sessions in manager for keys rotation.
+       * Similar to `pallet_staking::SessionsPerEra`.
+       **/
+      sessionsPerEra: u32 & AugmentedConst<ApiType>;
+      /**
+       * Generic const
+       **/
+      [key: string]: Codec;
+    };
     gearGas: {
       /**
        * The maximum amount of gas that can be used within a single block.

api/src/types/augment/augment-api-errors.ts

@@ -124,6 +124,35 @@ declare module '@polkadot/api-base/types/errors' {
        **/
       [key: string]: AugmentedError<ApiType>;
     };
+    gearEthBridge: {
+      /**
+       * The error happens when bridge got called before
+       * proper initialization after deployment.
+       **/
+      BridgeIsNotYetInitialized: AugmentedError<ApiType>;
+      /**
+       * The error happens when bridge got called when paused.
+       **/
+      BridgeIsPaused: AugmentedError<ApiType>;
+      /**
+       * The error happens when bridging thorough builtin and message value
+       * is inapplicable to operation or insufficient.
+       **/
+      IncorrectValueApplied: AugmentedError<ApiType>;
+      /**
+       * The error happens when bridging message sent with too big payload.
+       **/
+      MaxPayloadSizeExceeded: AugmentedError<ApiType>;
+      /**
+       * The error happens when bridging queue capacity exceeded,
+       * so message couldn't be sent.
+       **/
+      QueueCapacityExceeded: AugmentedError<ApiType>;
+      /**
+       * Generic error
+       **/
+      [key: string]: AugmentedError<ApiType>;
+    };
     gearGas: {
       /**
        * `GasTree::consume` called on node, which has some balance locked.

api/src/types/augment/augment-api-events.ts

@@ -15,9 +15,10 @@ import {
   GprimitivesCodeId,
   GprimitivesMessageId,
   PalletGearDebugDebugData,
+  PalletGearEthBridgeInternalEthMessage,
   PalletGearVoucherInternalVoucherId,
 } from '../lookup';
-import type { AccountId32 } from '@polkadot/types/interfaces/runtime';
+import type { AccountId32, H256 } from '@polkadot/types/interfaces/runtime';
 import type { ApiTypes } from '@polkadot/api-base/types';
 
 declare module '@polkadot/api-base/types/events' {
@@ -140,6 +141,47 @@ declare module '@polkadot/api-base/types/events' {
        **/
       [key: string]: AugmentedEvent<ApiType>;
     };
+    gearEthBridge: {
+      /**
+       * Grandpa validator's keys set was hashed and set in storage at
+       * first block of the last session in the era.
+       **/
+      AuthoritySetHashChanged: AugmentedEvent<ApiType, [H256]>;
+      /**
+       * Bridge got cleared on initialization of the second block in a new era.
+       **/
+      BridgeCleared: AugmentedEvent<ApiType, []>;
+      /**
+       * Optimistically, single-time called event defining that pallet
+       * got initialized and started processing session changes,
+       * as well as putting initial zeroed queue merkle root.
+       **/
+      BridgeInitialized: AugmentedEvent<ApiType, []>;
+      /**
+       * Bridge was paused and temporary doesn't process any incoming requests.
+       **/
+      BridgePaused: AugmentedEvent<ApiType, []>;
+      /**
+       * Bridge was unpaused and from now on processes any incoming requests.
+       **/
+      BridgeUnpaused: AugmentedEvent<ApiType, []>;
+      /**
+       * A new message was queued for bridging.
+       **/
+      MessageQueued: AugmentedEvent<
+        ApiType,
+        [message: PalletGearEthBridgeInternalEthMessage, hash_: H256],
+        { message: PalletGearEthBridgeInternalEthMessage; hash_: H256 }
+      >;
+      /**
+       * Merkle root of the queue changed: new messages queued within the block.
+       **/
+      QueueMerkleRootChanged: AugmentedEvent<ApiType, [H256]>;
+      /**
+       * Generic event
+       **/
+      [key: string]: AugmentedEvent<ApiType>;
+    };
     gearVoucher: {
       /**
        * Voucher has been declined (set to expired state).