feat: create script for automating the registration of parachain with…

… the relay chain (#43)

* chore: implement script for parachain onboarding

* feat: implement script for regiration of parachain to the relay

---------

Co-authored-by: Shreyas S Bhat <[email protected]>

parachain/parachain.star

@@ -45,3 +45,4 @@ def start_nodes(plan, args, relay_chain_ip):
     for parachain in parachains:
         para_id = register_para_slot.register_para_id(plan, relay_chain_ip)
         start_local_parachain_node(plan, parachain, para_id)
+        register_para_slot.onboard_genesis_state_and_wasm(plan, para_id, parachain)

parachain/register-para-id.star

@@ -9,3 +9,20 @@ def register_para_id(plan, alice_ip):
     para_id = plan.exec(service_name = test.name, recipe = ExecRecipe(command = ["/bin/sh", "-c", "cat /tmp/para.json | tr -d '\n\r'"]))
 
     return para_id["output"]
+
+def onboard_genesis_state_and_wasm(plan, para_id, chain_name):
+    service = plan.add_service(
+        name = "upload-genesis-file",
+        config = ServiceConfig(
+            image = constant.NODE_IMAGE,
+            files = {
+                "/app": "configs",
+                "/build": constant.RAW_BUILD_SPEC,
+                "/javascript": "javascript",
+            },
+            entrypoint = ["/bin/sh"],
+        ),
+    )
+
+    plan.exec(service_name = service.name, recipe = ExecRecipe(command = ["/bin/sh", "-c", "cd /javascript && npm i "]))
+    plan.exec(service_name = service.name, recipe = ExecRecipe(command = ["/bin/sh", "-c", "cd /javascript &&  node onboard ws://{0}:9944 //Alice {1} /build/{2}-genesis-state /build/{2}-genesis-wasm".format(alice_ip, para_id, chain_name)]))

parachain/static_files/javascript/onboard.js

@@ -0,0 +1,69 @@
+const { ApiPromise, WsProvider, Keyring } = require("@polkadot/api");
+const fs = require("fs");
+
+const run = async () => {
+  try {
+    console.log("Parsing Args ...");
+    // 0 & 1 are command context
+    const endpoint = process.argv[2];
+    const seed = process.argv[3];
+    const id = process.argv[4];
+    const header = process.argv[5];
+    const wasmFile = process.argv[6];
+
+    const wsProvider = new WsProvider(endpoint);
+
+    const api = await ApiPromise.create({
+      provider: wsProvider,
+    });
+
+    const keyring = new Keyring({ type: "sr25519" });
+    const alice = keyring.addFromUri(seed);
+
+    let wasm;
+    try {
+      wasm = fs.readFileSync(wasmFile, "utf8");
+    } catch (err) {
+      console.error(err);
+      throw err;
+    }
+
+    let paraGenesisArgs = {
+      genesis_head: header,
+      validation_code: wasm,
+      parachain: true,
+    };
+
+    let genesis = api.createType("ParaGenesisArgs", paraGenesisArgs);
+
+    const nonce = Number((await api.query.system.account(alice.address)).nonce);
+
+    console.log(
+      `--- Submitting extrinsic to register parachain ${id}. (nonce: ${nonce}) ---`
+    );
+    const sudoCall = await api.tx.sudo
+      .sudo(api.tx.parasSudoWrapper.sudoScheduleParaInitialize(id, genesis))
+      .signAndSend(alice, { nonce: nonce, era: 0 }, (result) => {
+        console.log(`Current status is ${result.status}`);
+        if (result.status.isInBlock) {
+          console.log(
+            `Transaction included at blockHash ${result.status.asInBlock}`
+          );
+          console.log("Waiting for finalization...");
+        } else if (result.status.isFinalized) {
+          console.log(
+            `Transaction finalized at blockHash ${result.status.asFinalized}`
+          );
+          sudoCall();
+          process.exit();
+        } else if (result.isError) {
+          console.log(`Transaction Error`);
+          process.exit();
+        }
+      });
+  } catch (error) {
+    console.log("error:", error);
+  }
+};
+
+run();

parachain/static_files/javascript/package.json

@@ -4,7 +4,8 @@
   "description": "",
   "main": "index.js",
   "scripts": {
-    "register": "node register.js"
+    "register": "node register.js",
+    "onboard": "node onboard.js"
   },
   "keywords": [],
   "dependencies": {