feat: add paymaster service

.github/workflows/docker.yml

@@ -0,0 +1,46 @@
+name: Docker
+
+on:
+  push:
+    tags:
+      - v**
+env:
+  AWS_REGION: us-west-2
+
+jobs:
+   paymaster:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v4
+        with:
+          aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws-region: ${{ env.AWS_REGION }}
+      - name: Login to Amazon ECR
+        id: login-ecr
+        uses: aws-actions/amazon-ecr-login@v2
+      - name: check repo and create it if not exist
+        env:
+          REPOSITORY: paymaster
+        run: |
+          aws --region ${{ env.AWS_REGION }} ecr describe-repositories --repository-names ${{ env.REPOSITORY }} && : || aws --region ${{ env.AWS_REGION }} ecr create-repository --repository-name ${{ env.REPOSITORY }}
+      - name: Build and push
+        uses: docker/build-push-action@v3
+        env:
+          ECR_REGISTRY: ${{ steps.login-ecr.outputs.registry }}
+          REPOSITORY: paymaster
+          IMAGE_TAG: ${{ github.ref_name }}
+        with:
+          context: .
+          file: ./build/paymaster.Dockerfile
+          push: true
+          tags: |
+            ${{ env.ECR_REGISTRY }}/${{ env.REPOSITORY }}:${{ env.IMAGE_TAG }}
+            ${{ env.ECR_REGISTRY }}/${{ env.REPOSITORY }}:latest

.github/workflows/paymaster.yml

@@ -0,0 +1,67 @@
+name: Paymaster
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types:
+      - opened
+      - reopened
+      - synchronize
+      - ready_for_review
+
+jobs:
+  check:
+     if: github.event.pull_request.draft == false
+     runs-on: ubuntu-latest
+     steps:
+     - name: Install Go
+       uses: actions/setup-go@v2
+       with:
+         go-version: 1.23.0
+     - name: Checkout code
+       uses: actions/checkout@v2
+     - name: Lint
+       run: |
+         rm -rf $HOME/.cache/golangci-lint
+         make lint
+  goimports-lint:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.23.0
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Install goimports
+        run: go install golang.org/x/tools/cmd/goimports@latest
+      - run: goimports -local . -w .
+      - run: go mod tidy
+      # If there are any diffs from goimports or go mod tidy, fail.
+      - name: Verify no changes from goimports and go mod tidy
+        run: |
+          if [ -n "$(git status --porcelain)" ]; then
+            exit 1
+          fi
+  tests:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.23.0
+    - name: Checkout code
+      uses: actions/checkout@v4
+    - name: Test paymaster packages
+      run: |
+        make test
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v3
+      env:
+        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+      with:
+        flags: paymaster

.github/workflows/pull_request_template.md

@@ -0,0 +1,34 @@
+### Purpose or design rationale of this PR
+
+*Describe your change. Make sure to answer these three questions: What does this PR do? Why does it do it? How does it do it?*
+
+
+### PR title
+
+Your PR title must follow [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/#summary) (as we are doing squash merge for each PR), so it must start with one of the following [types](https://github.com/angular/angular/blob/22b96b9/CONTRIBUTING.md#type):
+
+- [ ] build: Changes that affect the build system or external dependencies (example scopes: yarn, eslint, typescript)
+- [ ] ci: Changes to our CI configuration files and scripts (example scopes: vercel, github, cypress)
+- [ ] docs: Documentation-only changes
+- [ ] feat: A new feature
+- [ ] fix: A bug fix
+- [ ] perf: A code change that improves performance
+- [ ] refactor: A code change that doesn't fix a bug, or add a feature, or improves performance
+- [ ] style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
+- [ ] test: Adding missing tests or correcting existing tests
+
+
+### Deployment tag versioning
+
+Has `tag` in `common/version.go` been updated or have you added `bump-version` label to this PR?
+
+- [ ] No, this PR doesn't involve a new deployment, git tag, docker image tag
+- [ ] Yes
+
+
+### Breaking change label
+
+Does this PR have the `breaking-change` label?
+
+- [ ] No, this PR is not a breaking change
+- [ ] Yes

.gitignore

@@ -23,3 +23,6 @@ go.work.sum
 
 # env file
 .env
+
+# Built binaries
+build/bin

Makefile

@@ -0,0 +1,21 @@
+.PHONY: lint fmt build docker
+.DEFAULT_GOAL := build
+
+IMAGE_VERSION=latest
+
+lint:
+	GOBIN=$(PWD)/build/bin go run ./build/lint.go
+
+fmt:
+	go mod tidy
+	goimports -w .
+	gofumpt -l -w .
+
+build:
+	go build -o $(PWD)/build/bin/paymaster ./cmd/
+
+test:
+	go test -v -race -coverprofile=coverage.out ./...
+
+docker:
+	docker build --platform linux/amd64 -t scrolltech/paymaster:${IMAGE_VERSION} ./ -f ./build/paymaster.Dockerfile