func newFakeClient(proto, addr string) *fakeclient.FakeClient {
c := fakeclient.FakeClient{}
c.SchemeReturns(proto)
c.AddressReturns(addr)
return &c
}
})
Context("when selecting a client errors", func() {
It("an error is logged and returns", func() {
clientPool.RandomClientReturns(nil, errors.New("boom"))
forwarder.Write(envelope)
Expect(loggertesthelper.TestLoggerSink.LogContents()).To(ContainSubstring("can't forward message"))
Expect(client.SchemeCallCount()).To(Equal(0))
})
})
})
Context("udp client", func() {
BeforeEach(func() {
client.SchemeReturns("udp")
})
It("marshals, signs, writes and emits metrics", func() {
bytes, err := proto.Marshal(envelope)
Expect(err).NotTo(HaveOccurred())
bytes = signature.SignMessage(bytes, sharedSecret)
forwarder.Write(envelope)
Expect(client.WriteArgsForCall(0)).To(Equal(bytes))
Eventually(func() uint64 { return sender.GetCounter("DopplerForwarder.sentMessages") }).Should(BeEquivalentTo(1))
Expect(sender.GetCounter("dropsondeMarshaller.logMessageMarshalled")).To(BeEquivalentTo(1))
})
Context("when writes fail", func() {