Flow exporter

This program receives flows (currently Netflow), enriches them with interface names (using gNMI), geo information (using MaxMind) and export them to Kafka.

Build

Use make. The following commands are available:

• make help to get help
• make to build the binary (in bin/)
• make test to run tests
• make test-verbose to run tests in verbose mode
• make test-race for race tests
• make test-xml for tests with xUnit-compatible output
• make test-coverage for test coverage (will output index.html, coverage.xml and profile.out in test/coverage.*/.
• make test PKG=helloworld/hello to restrict test to a package
• make clean
• make lint to run golint
• make fmt to run gofmt

Design

Components

The generic design is component-based. Each piece is a component. You get an instance of the component with New() (or NewMock() for tests). Each component is initialized with:

• an instance of the reporter (the component for logging),
• their configuration (extracted from the general configuration),
• the components they depend on.

Each component maintain its state. They have a Start() and optionally a Stop() method.

See https://github.com/stuartsierra/component to understand where the inspiration comes from.