func main() {
var configPath string
flag.StringVar(&configPath, "config", "", "Path to redis config file")
flag.Parse()
if configPath == "" {
log.Fatal("Missing flag --config")
}
config, err := redisconf.Load(configPath)
if err != nil {
log.Fatalf("Error loading Redis config file: %s", err)
}
port := config.Port()
host := config.Host()
password := config.Password()
clientConnection, err := client.Connect(
client.Port(port),
client.Host(host),
client.Password(password),
)
if err != nil {
log.Fatalf("Error connecting to Redis: %s", err)
}
m, err := metrics.CPULoad(clientConnection)
if err != nil {
log.Fatalf("Error getting metrics: %s", err)
}
if err := json.NewEncoder(os.Stdout).Encode(m); err != nil {
log.Fatalf("Error encoding json: %s", err)
}
}
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/pivotal-cf/redis-cpu/metrics"
"github.com/pivotal-cf/redis-cpu/metrics/fakes"
)
var _ = Describe("CPULoad", func() {
var client *fakes.FakeClient
BeforeEach(func() {
client = new(fakes.FakeClient)
client.InfoReturns(map[string]string{"used_cpu_sys": "123.45"}, nil)
})
It("calls client.Info()", func() {
metrics.CPULoad(client)
Expect(client.InfoCallCount()).To(Equal(1))
})
It("does not return an error", func() {
_, err := metrics.CPULoad(client)
Expect(err).ToNot(HaveOccurred())
})
It("reports the right CPU load metric", func() {
m, _ := metrics.CPULoad(client)
Expect(m.Key).To(Equal("cpu_load"))
Expect(m.Value).To(Equal(123.45))
Expect(m.Unit).To(Equal("load"))
})