Add development chain-spec file for minimal/parachain templates for Omni Node compatibility

.github/workflows/misc-sync-templates.yml

@@ -27,7 +27,66 @@ on:
         default: false
 
 jobs:
+  prepare-chain-spec-artifacts:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - template: minimal
+            package_name: 'minimal-template-runtime'
+            runtime_path: './templates/minimal/runtime'
+            runtime_wasm_path: minimal-template-runtime/minimal_template_runtime.compact.compressed.wasm
+            relay_chain: 'dev'
+          - template: parachain
+            package_name: 'parachain-template-runtime'
+            runtime_path: './templates/parachain/runtime'
+            runtime_wasm_path: 'minimal-template-runtime/minimal_template_runtime.compact.compressed.wasm'
+            relay_chain: 'rococo-local'
+    steps:
+        - uses: actions/checkout@v4
+          with:
+            ref: "${{ github.event.inputs.stable_release_branch }}"
+
+        - name: Setup build environment
+          run: |
+            sudo apt-get update
+            sudo apt-get install -y protobuf-compiler
+            cargo install --git https://github.com/chevdor/srtool-cli --locked
+            cargo install --path substrate/bin/utils/chain-spec-builder --locked
+            srtool pull
+
+        - name: Build runtime and generate chain spec
+          run: |
+            # Prepare directories
+            sudo mkdir -p ${{ matrix.runtime_path }}/target
+            sudo chmod -R 777 ${{ matrix.runtime_path }}/target
+
+            # Build runtime
+            srtool build --package ${{ matrix.package_name }} --runtime-dir ${{ matrix.runtime_path }} --root
+
+            # Generate chain spec
+            # Note that para-id is set to 1000 for both minimal/parachain templates. 
+            # `parachain-runtime` is hardcoded to use this parachain id. 
+            # `minimal` template isn't using it, but when started with Omni Node, this para id is required (any number can do it, so setting it to 1000 for convenience).
+            chain-spec-builder -c dev_chain_spec.json create \
+              --relay-chain "${{ matrix.relay_chain }}" \
+              --para-id 1000 \
+              --runtime "${{ matrix.runtime_path }}/target/srtool/release/wbuild/${{ matrix.runtime_wasm_path }}" \
+              named-preset development
+
+        - name: Prepare upload directory
+          run: |
+            mkdir -p artifacts-${{ matrix.template }}
+            cp dev_chain_spec.json artifacts-${{ matrix.package_name }}/dev_chain_spec.json
+
+        - name: Upload template directory
+          uses: actions/upload-artifact@v4
+          with:
+            name: artifacts-${{ matrix.template }}
+            path: artifacts-${{ matrix.template }}/dev_chain_spec.json
+
   sync-templates:
+    needs: prepare-chain-spec-artifacts
     runs-on: ubuntu-latest
     environment: master
     strategy:
@@ -37,6 +96,18 @@ jobs:
     env:
       template-path: "polkadot-sdk-${{ matrix.template }}-template"
     steps:
+      # 0. download dev chain spec
+      - uses: actions/checkout@v4
+        with:
+          path: polkadot-sdk
+          ref: "${{ github.event.inputs.stable_release_branch }}"
+
+      - name: Download template artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: artifacts-${{ matrix.template }}
+          path: templates/${{ matrix.template }}/
+        if: matrix.template != 'solochain'
 
       # 1. Prerequisites.
 

templates/minimal/README.md

@@ -37,11 +37,17 @@
 - 🤏 This template is a minimal (in terms of complexity and the number of components)
 template for building a blockchain node.
 
+
 - 🔧 Its runtime is configured with a single custom pallet as a starting point, and a handful of ready-made pallets
 such as a [Balances pallet](https://paritytech.github.io/polkadot-sdk/master/pallet_balances/index.html).
 
+
 - 👤 The template has no consensus configured - it is best for experimenting with a single node network.
 
+
+- For the most up-to-date chain specification, refer to [staging-chain-spec-builder](https://crates.io/crates/staging-chain-spec-builder)
+
+
 ## Template Structure
 
 A Polkadot SDK based project such as this one consists of:
@@ -61,7 +67,7 @@ compiled unless building the entire workspace).
 - 🛠️ Depending on your operating system and Rust version, there might be additional
 packages required to compile this template - please take note of the Rust compiler output.
 
-Fetch minimal template code:
+Fetch minimal template code.
 
 ```sh
 git clone https://github.com/paritytech/polkadot-sdk-minimal-template.git minimal-template
@@ -147,6 +153,11 @@ docker run --rm polkadot-sdk-minimal-template
 We can install `zombienet` as described [here](https://paritytech.github.io/zombienet/install.html#installation),
 and `zombienet-omni-node.toml` contains the network specification we want to start.
 
+To simplify the process of starting the minimal template with zombienet and Omni Node, we've added a pre-configured 
+development chain spec (dev_chain_spec.json) to the minimal template. The zombienet-omni-node.toml file of this template
+points to it, but you can update it to an updated path to the new chain spec generated on your machine, as shown below.
+
+
 #### Update `zombienet-omni-node.toml` with a valid chain spec path
 
 Before starting the network with zombienet we must update the network specification

templates/minimal/zombienet-omni-node.toml

@@ -1,8 +1,8 @@
 [relaychain]
 default_command = "polkadot-omni-node"
 chain = "dev"
-chain_spec_path = "<path/to/chain_spec.json>"
-default_args = ["--dev"]
+chain_spec_path = "./dev_chain_spec.json"
+default_args = ["--dev-block-time 3000"]
 
 [[relaychain.nodes]]
 name = "alice"

templates/parachain/README.md

@@ -43,6 +43,9 @@
 
 - 👉 Learn more about parachains [here](https://wiki.polkadot.network/docs/learn-parachains)
 
+- For the most up-to-date chain specification, refer to [staging-chain-spec-builder](https://crates.io/crates/staging-chain-spec-builder)
+
+
 ## Template Structure
 
 A Polkadot SDK based project such as this one consists of:
@@ -144,6 +147,12 @@ Download the `polkadot` (and the accompanying `polkadot-prepare-worker` and `pol
 export PATH="$PATH:<path/to/binaries>"
 ```
 
+
+To simplify the process of using the parachain-template with zombienet and Omni Node, we've added a pre-configured
+development chain spec (dev_chain_spec.json) to the parachain template. The zombienet-omni-node.toml file of this
+template points to it, but you can update it to an updated chain spec generated on your machine, as shown below:
+
+
 #### Update `zombienet-omni-node.toml` with a valid chain spec path
 
 ```toml

templates/parachain/zombienet-omni-node.toml

@@ -14,7 +14,7 @@ ws_port = 9955
 
 [[parachains]]
 id = 1000
-chain_spec_path = "<path/to/chain_spec.json>"
+chain_spec_path = "./dev_chain_spec.json"
 
 [parachains.collator]
 name = "charlie"