Health

Monitor and track health of services, send heartbeats (to-do), and expose status through HTTP endpoint.

Installation

Install health using the go get command:

$ go get github.com/gocrumb/health

The package requires no additional dependencies other than Go itself.

Usage

hm := health.New(
	health.Checks(
		http.Head("http://example.com/", http.Period(3*time.Minute)),
		mongo.Ping(mongoClient, mongo.Period(1*time.Minute), mongo.ReadPref(rp)),
		redis.Ping(redisClient), // Falls back to default period (5 minutes)
	),
	health.Logger(log.New(os.Stderr, "[Health] ", log.LstdFlags|log.Lmsgprefix)),
	health.OnFailure(func() {
		log.Fatal("Health check failed; exiting")
	}),
)
hm.Start()

Checks

Check	Description
http.Head	Sends HTTP HEAD requests to the given URL. Expects response with status code 2XX.
mongo.Ping	Pings MongoDB through the given client.
redis.Ping	Pings Redis through the given client.

Documentation

• Reference

Contributing

Contributions are welcome.

License

This package is available under the BSD (3-Clause) License.

TODO

• Check: TCP connection, fails on disconnect.
• Check: RabbitMQ
• Beacon: Send periodic pings to remote health monitoring service (e.g. healthchecks.io)