Script to register a parachain (#137)

cumulus/scripts/register_parachain.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+
+usage() {
+    echo Usage:
+    echo "$0 <url> <seed> <wasm> <genesis> <parachain-id> <tokens> <account>"
+    exit 1
+}
+
+url=$1
+seed=$2
+wasm=$3
+genesis=$4
+parachain_id=$5
+tokens=$6
+account=$7
+
+[ -z "$url" ] && usage
+[ -z "$seed" ] && usage
+[ -z "$wasm" ] && usage
+[ -z "$genesis" ] && usage
+[ -z "$parachain_id" ] && usage
+[ -z "$tokens" ] && usage
+[ -z "$account" ] && usage
+if ! [ -r "$wasm" ]; then
+    echo "Could not read: $wasm"
+    exit 1
+fi
+
+if ! which polkadot-js-api &> /dev/null; then
+    echo 'command `polkadot-js-api` not in PATH'
+    echo "npm install -g @polkadot/api-cli"
+    exit 1
+fi
+
+set -e -x
+
+test -f "$seed" && seed="$(cat "$seed")"
+
+polkadot-js-api \
+    --ws "${url?}" \
+    --sudo \
+    --seed "${seed?}" \
+    tx.registrar.registerPara \
+        "${parachain_id?}" \
+        '{"scheduling":"Always"}' \
+        @"${wasm?}" \
+        "${genesis?}"
+
+polkadot-js-api \
+    --ws "${url?}" \
+    --sudo \
+    --seed "${seed?}" \
+    tx.balances.setBalance \
+        "${account?}" \
+        $((tokens * 10 ** 12)) \
+        0