func ServiceAvailable(port uint) bool {
address, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("localhost:%d", port))
if err != nil {
return false
}
return availability.Check(address, 10*time.Second) == nil
}
})
Context("when the processmonitor has received USR1", func() {
BeforeEach(func() {
monitorSession.Signal(syscall.SIGUSR1)
helpers.KillRedisProcess(instanceID, brokerConfig)
allowTimeForProcessMonitorToRestartInstances()
})
It("does not restart the instance", func() {
address, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("localhost:%d", port))
Ω(err).NotTo(HaveOccurred())
err = availability.Check(address, 2*time.Second)
Ω(err).To(HaveOccurred())
})
AfterEach(func() {
brokerClient.DeprovisionInstance(instanceID)
relaunchProcessMonitorWithConfig(processMonitorPath, "broker.yml")
})
})
})
})
func durationForProcessMonitorToRestartInstance() time.Duration {
return time.Second * time.Duration(brokerConfig.RedisConfiguration.ProcessCheckIntervalSeconds+1)
}
listener.AcceptTCP()
}
var _ = Describe("waiting for a port to become available", func() {
var address *net.TCPAddr
BeforeEach(func() {
var err error
address, err = net.ResolveTCPAddr("tcp", "localhost:19000")
Ω(err).ShouldNot(HaveOccurred())
})
Context("when nothing is listening at the specified address", func() {
It("errors", func() {
err := availability.Check(address, time.Second*1)
Ω(err).Should(HaveOccurred())
})
})
Context("when something is already listening at the specified address", func() {
terminate := make(chan struct{})
closed := make(chan struct{})
BeforeEach(func() {
go func() {
defer GinkgoRecover()
listen(*address, 0, terminate, closed)
}()
})
func (portChecker) Check(address *net.TCPAddr, timeout time.Duration) error {
return availability.Check(address, timeout)
}