func main() {
port, consulURL, pathToCheckARecord := parseCommandLineFlags()
proxyURL, err := url.Parse(consulURL)
if err != nil {
log.Fatal(err)
}
if pathToCheckARecord == "" {
log.Fatal("--path-to-check-a-record is required")
}
mux := http.NewServeMux()
logBuffer := bytes.NewBuffer([]byte{})
healthCheckHandler := handlers.NewHealthCheckHandler()
dnsHandler := handlers.NewDNSHandler(pathToCheckARecord)
proxy := httputil.NewSingleHostReverseProxy(proxyURL)
director := proxy.Director
proxy.Director = func(request *http.Request) {
director(request)
request.URL.Path = strings.TrimPrefix(request.URL.Path, "/consul")
request.Host = request.URL.Host
}
proxy.ErrorLog = log.New(logBuffer, "", 0)
mux.HandleFunc("/consul/", func(w http.ResponseWriter, req *http.Request) {
bufferedRW := buffered.NewResponseWriter(w, logBuffer)
proxy.ServeHTTP(bufferedRW, req)
bufferedRW.Copy()
})
mux.HandleFunc("/health_check", func(w http.ResponseWriter, req *http.Request) {
healthCheckHandler.ServeHTTP(w, req)
})
mux.HandleFunc("/dns", func(w http.ResponseWriter, req *http.Request) {
dnsHandler.ServeHTTP(w, req)
})
log.Fatal(http.ListenAndServe(fmt.Sprintf("0.0.0.0:%s", port), mux))
}
var err error
args := []string{
"-ldflags",
"-X main.Addresses=127.0.0.2,127.0.0.3,127.0.0.4 -X main.ServiceName=some-service",
}
pathToCheckARecord, err = gexec.Build("github.com/cloudfoundry-incubator/consul-release/src/acceptance-tests/testing/testconsumer/fakes/checkarecord", args...)
Expect(err).NotTo(HaveOccurred())
})
It("returns an array of ip addresses", func() {
request, err := http.NewRequest("GET", "/dns?service=some-service", nil)
Expect(err).NotTo(HaveOccurred())
handler := handlers.NewDNSHandler(pathToCheckARecord)
recorder := httptest.NewRecorder()
handler.ServeHTTP(recorder, request)
Expect(recorder.Code).To(Equal(http.StatusOK))
Expect(string(recorder.Body.Bytes())).To(Equal(`["127.0.0.2","127.0.0.3","127.0.0.4"]`))
})
})
Context("when no ip addresses are bound to the service", func() {
var pathToCheckARecord string
BeforeEach(func() {
var err error
args := []string{