[USER_OPS_INDEXER] EIP4337 user operations indexer & API server (#692)

* feat: initial demo

* fix: initial review fixes

* fix: filter parser

* chore: refactor page token parsing

* feat: remaining endpoints

* chore: refactor

* chore: more improvements

* fix: sql error

* feat: simplify migration

* chore: best practices refactor

* feat: simple retries

* chore: rename to logic

* chore: ci

* feat: simple repo tests

* chore: lint

* fix: ci db service

* feat: remaining repo tests

* feat: tx handler basic test

* feat: optional realtime indexer

* fix: gas limit bug

* fix: bytes json display

* feat: custom migration table

* fix: tests

* feat: page size cfg

* chore: adjust fields naming

* chore: minor changes

* chore: common db settings

* chore: update env config

* chore: update cfg

* chore: fmt

* chore: nit

* feat: handle_tx db test

* chore: sort imports

* feat: status & fee in user ops list

.github/workflows/user-ops-indexer.yml

@@ -0,0 +1,157 @@
+on:
+  push:
+    branches:
+      - 'main'
+    tags:
+      - 'user-ops-indexer/v*'
+  pull_request:
+    paths:
+      - user-ops-indexer/**
+      - .github/workflows/user-ops-indexer.yml
+      - .github/actions/deps/**
+
+
+name: Test, lint and docker (user-ops-indexer)
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: blockscout/user-ops-indexer
+
+defaults:
+  run:
+    working-directory: user-ops-indexer
+
+jobs:
+  test:
+    name: Unit, doc and integration tests
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres
+        env:
+          POSTGRES_PASSWORD: admin
+          POSTGRES_USER: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install deps
+        uses: ./.github/actions/deps
+
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          override: true
+
+      - name: Rust cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          workspaces: user-ops-indexer -> target
+
+      - name: Unit tests
+        run: RUST_BACKTRACE=1 RUST_LOG=info cargo test --locked --workspace --all-features --lib --bins -- --nocapture
+        if: success() || failure()
+        env:
+          DATABASE_URL: postgres://postgres:admin@localhost:5432/
+
+      - name: Doc tests
+        run: RUST_BACKTRACE=1 RUST_LOG=info cargo test --locked --workspace --all-features --doc -- --skip proto
+        if: success() || failure()
+
+  #       TODO: Uncomment when integration test added
+  #    - name: Integration tests
+  #      run: RUST_BACKTRACE=1 RUST_LOG=info cargo test --locked --workspace --test '*' -- --nocapture
+  #      if: success() || failure()
+
+  lint:
+    name: Linting
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - name: Install deps
+        uses: ./.github/actions/deps
+
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          components: rustfmt, clippy
+          override: true
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+          workspaces: user-ops-indexer -> target
+
+      - name: cargo fmt
+        run: cargo fmt --all -- --check --config imports_granularity=Crate
+
+      - name: cargo clippy
+        run: cargo clippy --all --all-targets --all-features -- -D warnings
+
+  push:
+    name: Docker build and docker push
+    needs:
+      - test
+      - lint
+    if: |
+      always() &&
+      (needs.test.result == 'success' || needs.test.result == 'cancelled') &&
+      (needs.lint.result == 'success' || needs.lint.result == 'cancelled')
+    timeout-minutes: 30
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - uses: actions-ecosystem/action-regex-match@v2
+        id: regex
+        with:
+          text: ${{ github.ref }}
+          regex: '^(refs\/tags\/user-ops-indexer\/(v\d+\.\d+\.\d+))|(refs\/heads\/(main))$'
+
+      - name: Extract tag name
+        id: tags_extractor
+        run: |
+          t=${{ steps.regex.outputs.group2 }}
+          m=${{ steps.regex.outputs.group4 }}
+          (if ! [[ "$t" == "" ]]; then echo tags=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$t, ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest; elif ! [[ "$m" == "" ]]; then echo tags=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:$m; else echo tags=; fi) >> $GITHUB_OUTPUT
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata for Docker
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: "user-ops-indexer"
+          file: "user-ops-indexer/Dockerfile"
+          push: ${{ steps.tags_extractor.outputs.tags != '' }}
+          tags: ${{ steps.tags_extractor.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:build-cache
+          cache-to: ${{ github.ref == 'refs/heads/main' && format('type=registry,ref={0}/{1}:build-cache,mode=max', env.REGISTRY, env.IMAGE_NAME) || '' }}

user-ops-indexer/.dockerignore

@@ -0,0 +1,5 @@
+target
+Dockerfile
+README.md
+tests
+config.toml