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48 changes: 48 additions & 0 deletions .github/workflows/examples.yml
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on:
push:
branches: [main]
workflow_dispatch:

# Cancel a currently running workflow from the same PR, branch or tag when a new workflow is
# triggered (ref https://stackoverflow.com/a/72408109)
concurrency:
group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
cancel-in-progress: true

jobs:
polkadot:
runs-on: ubuntu-latest
steps:
- name: Checkout Runtimes Repo
uses: actions/checkout@v3
with:
repository: "polkadot-fellows/runtimes"

- name: Run Polkadot Try Runtime Checks
uses: "paritytech/try-runtime-gha@main"
with:
runtime-package: "polkadot-runtime"
# - Disable Weight Warnings because they do not apply to Relay Chains
# - Disable Spec Version Check because we are just running this against 'master' branch,
# not an actually ready to deploy runtime
extra-args: "--no-weight-warnings --disable-spec-version-check"
node-uri: "wss://polkadot-try-runtime-node.parity-chains.parity.io:443"
# Try State checks are currently broken on Polkadot. So only run migration checks for now.
checks: "pre-and-post"

rococo-asset-hub:
runs-on: ubuntu-latest
steps:
- name: Checkout Polkadot SDK
uses: actions/checkout@v3
with:
repository: "paritytech/polkadot-sdk"

- name: Run Rococo Asset Hub Try Runtime Checks
uses: "paritytech/try-runtime-gha@main"
with:
runtime-package: "asset-hub-rococo-runtime"
node-uri: "wss://rococo-asset-hub-rpc.polkadot.io:443"
# - Disable Spec Version Check because we are just running this against 'master' branch,
# not an actually ready to deploy runtime
extra-args: "--disable-spec-version-check"
201 changes: 201 additions & 0 deletions LICENSE
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75 changes: 75 additions & 0 deletions action.yml
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name: "Try Runtime GHA"
description: "Easily check runtime migrations for a Substrate-based blockchain using try-runtime-cli"
author: "Parity Tech"
branding:
icon: "shield"
color: "green"

inputs:
runtime-package:
description: "The runtime package name"
required: true
node-uri:
description: "URI of a node to scrape state"
required: true
extra-args:
description: 'Extra args to pass to the ''on-runtime-upgrade'' subcommand. For example, "--disable-idempotency-check --no-weight-warnings". See all options at https://paritytech.github.io/try-runtime-cli/try_runtime_core/commands/on_runtime_upgrade/struct.Command.html.'
default: ""
checks:
description: 'Types of checks to run. For example, "pre-and-post". See all options at https://paritytech.github.io/try-runtime-cli/frame_support/traits/enum.UpgradeCheckSelect.html.'
default: "all"
shared-cache-key:
description: "The shared cache key"
default: "try-runtime-gha"

runs:
using: "composite"
steps:
- name: Download try-runtime-cli
run: |
curl -sL https://github.com/paritytech/try-runtime-cli/releases/download/v0.6.1/try-runtime-x86_64-unknown-linux-musl -o try-runtime
chmod +x ./try-runtime
shell: bash

- name: Install Protoc
uses: arduino/setup-protoc@v1.3.0
with:
version: "3.6.1"

- name: Add wasm32-unknown-unknown target
run: rustup target add wasm32-unknown-unknown
shell: bash

- name: Add rust-src component
run: rustup component add rust-src
shell: bash

- name: Fetch cache
uses: Swatinem/rust-cache@v2.7.0
with:
shared-key: ${{ inputs.shared-cache-key }}

- name: Build ${{ inputs.runtime-name }}
run: |
cargo build --profile production -p ${{ inputs.runtime-package }} --features try-runtime -q --locked
shell: bash

- name: Check migrations
run: |
PACKAGE_NAME=${{ inputs.runtime-package }}
RUNTIME_BLOB_NAME=$(echo $PACKAGE_NAME | sed 's/-/_/g').compact.compressed.wasm
RUNTIME_BLOB_PATH=./target/production/wbuild/$PACKAGE_NAME/$RUNTIME_BLOB_NAME
# Store the command in a variable so we can log it
COMMAND="./try-runtime \
--runtime $RUNTIME_BLOB_PATH \
on-runtime-upgrade --checks=${{ inputs.checks }} \
${{ inputs.extra-args }} \
live --uri ${{ inputs.node-uri }}"
# Echo the command before running it, for debugging purposes
echo "Running command:"
echo "$COMMAND"
eval "$COMMAND"
shell: bash
54 changes: 54 additions & 0 deletions readme.md
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# Try Runtime GHA

Try Runtime GHA makes it easy to add [try-runtime](https://paritytech.github.io/try-runtime-cli/try_runtime/) checks to your CI.

## Motivation

`try-runtime` enforces critical invariants such as:

- Migrations execute correctly, including `pre_upgrade` and `post_upgrade` hooks
- Migration execution does not exceed the block weight limit
- Migrations are idempotent
- Try State invariants pass
- Post-Migration, all runtime state is decodable

Given that code changes can break any of the above invariants, running `try-runtime` checks is as important as regularly running cargo tests in your CI to prevent accidental regressions.

## Usage

Create a new [Github Action Workflow](https://docs.github.com/en/actions/using-workflows) in the repo containing your runtime(s).

The simplest usage only requires two parameters `runtime-package`, and `node-uri`:

```yaml
name: Check Migrations

on:
push:
branches: ["main"]
pull_request:

jobs:
check-migrations:
steps:
- name: Checkout sources
uses: actions/checkout@v3

- name: Run Try Runtime Checks
uses: "paritytech/try-runtime-gha@main"
with:
runtime-package: "my-runtime" # The runtime package name
node-uri: "wss://my-runtime-uri:443" # Extra args to pass to the ''on-runtime-upgrade'' subcommand. For example, "--disable-idempotency-check --no-weight-warnings". See all options at https://paritytech.github.io/try-runtime-cli/try_runtime_core/commands/on_runtime_upgrade/struct.Command.html.
checks: "all" # OPTIONAL: Types of checks to run. For example, "pre-and-post". See all options at https://paritytech.github.io/try-runtime-cli/frame_support/traits/enum.UpgradeCheckSelect.html. Default: "all".
extra-args: "--arg --other-arg" # OPTIONAL: Extra args to pass to the 'on-runtime-upgrade' subcommand. For example, "--disable-idempotency-check --no-weight-warnings". See all options at https://paritytech.github.io/try-runtime-cli/try_runtime_core/commands/on_runtime_upgrade/struct.Command.html.
```

When triggered, the GHA will

1. Build the `runtime-package` with flags `--production` and `--features try-runtime`
2. Download [try-runtime-cli](https://github.com/paritytech/try-runtime-cli)
3. Exec `try-runtime on-runtime-upgrade --checks [checks] [extra-args] live [node-uri]`

If there is an error, you can check the logs for the exact command that failed to help reproduce the issue in your local environment.

See more examples at [`.github/workflows/examples.yml`](https://github.com/paritytech/try-runtime-gha/blob/main/.github/workflows/examples.yml).

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