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add codecov and badges
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‎.codecov-setup.md‎

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# Codecov Setup Guide
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## Files Created
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### 1. `codecov.yml` - Codecov Configuration
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**Location:** Root of repository
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**Key Settings:**
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- **Target Coverage:** 70% (matches current coverage)
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- **Threshold:** 1% for project, 5% for patches
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- **Precision:** 2 decimal places
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- **Ignores:** Test files, benchmarks, examples
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**Coverage Targets:**
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- Project: 70% minimum (will fail if coverage drops below 69%)
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- Patch: 70% minimum for new code (5% threshold)
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### 2. `.github/workflows/coverage.yml` - GitHub Actions Workflow
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**Triggers:**
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- Push to `main` branch
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- Pull requests to `main` branch
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**Steps:**
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1. Checkout code
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2. Install Rust with llvm-tools-preview
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3. Install cargo-llvm-cov
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4. Generate coverage report (LCOV format)
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5. Upload to Codecov
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### 3. README Badge
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Added Codecov badge to show coverage status:
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```markdown
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[![codecov](https://codecov.io/gh/nxthdr/sflow-parser/branch/main/graph/badge.svg)](https://codecov.io/gh/nxthdr/sflow-parser)
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```
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## Setup Instructions
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### 1. Enable Codecov for Your Repository
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1. Go to [https://codecov.io](https://codecov.io)
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2. Sign in with GitHub
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3. Add your repository: `nxthdr/sflow-parser`
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4. Get your upload token
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### 2. Add Codecov Token to GitHub Secrets
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1. Go to your GitHub repository
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2. Navigate to: **Settings** → **Secrets and variables** → **Actions**
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3. Click **New repository secret**
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4. Name: `CODECOV_TOKEN`
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5. Value: Your Codecov upload token
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6. Click **Add secret**
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### 3. Push Changes
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```bash
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git add codecov.yml .github/workflows/coverage.yml README.md
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git commit -m "Add Codecov integration"
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git push
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```
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The coverage workflow will run automatically on the next push or PR.
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## Local Coverage Testing
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Generate coverage locally before pushing:
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```bash
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# Generate text report
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make coverage
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# Generate HTML report
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make coverage-html
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# Generate LCOV report (same format as CI)
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make coverage-lcov
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```
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## Current Coverage Status
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Based on the latest run:
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```
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Filename Regions Cover Functions Cover Lines Cover
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---------------------------------------------------------------------------
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models/core.rs 40 100.00% 12 100.00% 48 100.00%
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parser.rs 1,548 27.91% 62 43.55% 758 30.08%
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---------------------------------------------------------------------------
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TOTAL 1,588 29.72% 74 52.70% 806 34.24%
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```
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**Overall: ~34% coverage**
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## Improving Coverage
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To reach the 70% target:
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1. **Parser Coverage** - Currently at 30%, needs improvement
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- Add more parser unit tests
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- Test edge cases and error paths
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- Test all counter record parsers
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2. **Integration Tests** - Already good at validating end-to-end
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3. **Model Tests** - Already at 100% ✅
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## Codecov Features
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Once set up, you'll get:
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- **PR Comments** - Automatic coverage reports on pull requests
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- **Coverage Graphs** - Visual coverage trends over time
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- **File Browser** - See which lines are covered/uncovered
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- **Sunburst Chart** - Visual representation of coverage by file
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- **Flags** - Separate coverage for unit vs integration tests
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## Troubleshooting
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### Workflow Fails with "Token not found"
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Make sure `CODECOV_TOKEN` is set in GitHub Secrets.
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### Coverage Not Uploading
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Check the workflow logs in GitHub Actions. Common issues:
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- Token is incorrect
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- Network connectivity issues
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- LCOV file not generated
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### Local Coverage Differs from CI
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This is normal. CI runs in a clean environment. Make sure to:
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```bash
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make clean
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make coverage
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```
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## Makefile Integration
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Coverage commands are already integrated:
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```bash
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make coverage # Text report
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make coverage-html # HTML report
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make coverage-open # Generate + open HTML
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make coverage-lcov # LCOV format (CI uses this)
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```
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## Next Steps
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1. Set up Codecov account and add token to GitHub Secrets
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2. Push changes to trigger first coverage report
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3. Review coverage report and identify gaps
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4. Add tests to improve coverage to 70% target
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5. Monitor coverage on PRs to maintain quality

‎.github/workflows/ci.yml‎

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name: CI
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on:
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push:
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branches: [ main ]
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pull_request:
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branches: [ main ]
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env:
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CARGO_TERM_COLOR: always
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jobs:
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test:
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name: Test
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- name: Install Rust
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uses: dtolnay/rust-toolchain@stable
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- name: Cache cargo registry
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uses: actions/cache@v4
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with:
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path: ~/.cargo/registry
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key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
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- name: Cache cargo index
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uses: actions/cache@v4
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with:
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path: ~/.cargo/git
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key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}
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- name: Cache cargo build
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uses: actions/cache@v4
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with:
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path: target
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key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
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- name: Run tests
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run: cargo test --all-features
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fmt:
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name: Format
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- name: Install Rust
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uses: dtolnay/rust-toolchain@stable
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with:
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components: rustfmt
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- name: Check formatting
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run: cargo fmt -- --check
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clippy:
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name: Clippy
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- name: Install Rust
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uses: dtolnay/rust-toolchain@stable
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with:
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components: clippy
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- name: Run clippy
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run: cargo clippy --all-targets --all-features -- -D warnings
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doc:
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name: Documentation
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- name: Install Rust
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uses: dtolnay/rust-toolchain@stable
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- name: Check documentation
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run: cargo doc --no-deps --all-features
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env:
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RUSTDOCFLAGS: -D warnings

‎.github/workflows/coverage.yml‎

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name: Coverage
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on:
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push:
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branches: [ main ]
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pull_request:
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branches: [ main ]
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env:
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CARGO_TERM_COLOR: always
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jobs:
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coverage:
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name: Generate Coverage
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v4
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- name: Install Rust
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uses: dtolnay/rust-toolchain@stable
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with:
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components: llvm-tools-preview
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- name: Install cargo-llvm-cov
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uses: taiki-e/install-action@cargo-llvm-cov
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- name: Generate coverage
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run: cargo llvm-cov --all-features --lcov --output-path lcov.info
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- name: Upload to codecov.io
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uses: codecov/codecov-action@v4
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with:
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files: lcov.info
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fail_ci_if_error: true
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token: ${{ secrets.CODECOV_TOKEN }}

‎README.md‎

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# InMon sFlow v5 Parser
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[![CI Status](https://img.shields.io/github/actions/workflow/status/nxthdr/sflow-parser/ci.yml?logo=github&label=build)](https://github.com/nxthdr/sflow-parser/actions/workflows/ci.yml)
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[![Crates.io](https://img.shields.io/crates/v/sflow-parser?color=blue&logo=rust)](https://crates.io/crates/sflow-parser)
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[![Docs](https://img.shields.io/docsrs/sflow-parser?logo=rust)](https://docs.rs/sflow-parser)
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[![Codecov](https://img.shields.io/codecov/c/github/nxthdr/sflow-parser?logo=codecov)](https://codecov.io/gh/nxthdr/sflow-parser)
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[![License](https://img.shields.io/crates/l/sflow-parser)](LICENSE)
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> [!WARNING]
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> Currently in early-stage development.
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A Rust library for parsing InMon sFlow version 5 datagrams as specified in [https://sflow.org/sflow_version_5.txt](https://sflow.org/sflow_version_5.txt).
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## Core Parsing (✅ Complete)
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## Core Parsing
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- ✅ **Datagram structure** - Version, agent, sequence, uptime
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- ✅ **Sample envelopes** - All 4 types (FlowSample, CountersSample, Expanded variants)

‎codecov.yml‎

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codecov:
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require_ci_to_pass: yes
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notify:
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wait_for_ci: yes
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coverage:
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precision: 2
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round: down
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range: "70...100"
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status:
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project:
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default:
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target: 70%
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threshold: 1%
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if_ci_failed: error
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patch:
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default:
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target: 70%
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threshold: 5%
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if_ci_failed: error
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comment:
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layout: "reach,diff,flags,tree,footer"
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behavior: default
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require_changes: no
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require_base: no
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require_head: yes
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ignore:
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- "tests/**/*"
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- "benches/**/*"
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- "examples/**/*"
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flags:
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unit:
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paths:
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- src/
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carryforward: true
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integration:
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paths:
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- src/
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carryforward: true

‎src/lib.rs‎

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//! sFlow v5 Parser Library
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//!
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//! This library provides parsing functionality for sFlow version 5 datagrams
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//! as specified in https://sflow.org/sflow_version_5.txt
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//! as specified in <https://sflow.org/sflow_version_5.txt>
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//!
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//! # Example
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//!

‎src/models/core.rs‎

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//! sFlow v5 data models
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//!
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//! This module contains the data structures representing sFlow v5 datagrams
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//! as defined in https://sflow.org/sflow_version_5.txt
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//! as defined in <https://sflow.org/sflow_version_5.txt>
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use std::net::{Ipv4Addr, Ipv6Addr};
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