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Copy pathdocker_resolver_test.go
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docker_resolver_test.go
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package emissary
import (
"context"
"net/http"
"net/http/httptest"
"testing"
)
func TestDockerResolver(t *testing.T) {
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/containers/json" {
w.WriteHeader(http.StatusNotFound)
return
}
w.Write([]byte(`[
{
"Id": "b084550d7373af8628b44173121dc162a377c499896e8b1704cb10d9f80cde5d",
"Names": [
"/docker_resolver_bar_1"
],
"Image": "docker_resolver_bar",
"ImageID": "sha256:5232a6f8826bc5c6bbc1da9683a4e2e2490abb581cdf50a8fc93ba1eabfef2ca",
"Command": "/server bar 3000",
"Created": 1547259718,
"Ports": [
{
"IP": "0.0.0.0",
"PrivatePort": 3000,
"PublicPort": 3002,
"Type": "tcp"
}
],
"Labels": {
"com.docker.compose.config-hash": "edef74d91523c043eca8b94f3282ca383d2a7339cbf1fb1152ce8731e1dd2093",
"com.docker.compose.container-number": "1",
"com.docker.compose.oneoff": "False",
"com.docker.compose.project": "docker_resolver",
"com.docker.compose.service": "bar",
"com.docker.compose.version": "1.21.2",
"emissary.service_name": "foobar-api"
},
"State": "running",
"Status": "Up Less than a second",
"HostConfig": {
"NetworkMode": "docker_resolver_envoymesh"
},
"NetworkSettings": {
"Networks": {
"docker_resolver_envoymesh": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "1512cc3b251a1d4f1441efeaa3322929ca3e141d7fdb6529bd406186c88f7c18",
"EndpointID": "b9216f159aa89cafa7f61b87592d4012e9630484551ee8bf7a7bd184221e53c2",
"Gateway": "172.20.0.1",
"IPAddress": "172.20.0.3",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:14:00:03",
"DriverOpts": null
}
}
},
"Mounts": []
},
{
"Id": "d0b5d1b6e35c3560a8a4277376ad99be43b36870f62cf78b551594cdd0bd237a",
"Names": [
"/docker_resolver_foo_1"
],
"Image": "docker_resolver_foo",
"ImageID": "sha256:5232a6f8826bc5c6bbc1da9683a4e2e2490abb581cdf50a8fc93ba1eabfef2ca",
"Command": "/server foo 3000",
"Created": 1547259718,
"Ports": [
{
"IP": "0.0.0.0",
"PrivatePort": 3000,
"PublicPort": 3001,
"Type": "tcp"
}
],
"Labels": {
"com.docker.compose.config-hash": "aecf5053500470d21742be5e6c6d89e64ac802f6178e56100f7508b307635431",
"com.docker.compose.container-number": "1",
"com.docker.compose.oneoff": "False",
"com.docker.compose.project": "docker_resolver",
"com.docker.compose.service": "foo",
"com.docker.compose.version": "1.21.2",
"emissary.service_name": "foobar-api"
},
"State": "running",
"Status": "Up 2 seconds",
"HostConfig": {
"NetworkMode": "docker_resolver_envoymesh"
},
"NetworkSettings": {
"Networks": {
"docker_resolver_envoymesh": {
"IPAMConfig": null,
"Links": null,
"Aliases": null,
"NetworkID": "1512cc3b251a1d4f1441efeaa3322929ca3e141d7fdb6529bd406186c88f7c18",
"EndpointID": "b409ad73d54e1287d4efe235dae9b306550724a736a828b177322d710c69d87c",
"Gateway": "172.20.0.1",
"IPAddress": "172.20.0.2",
"IPPrefixLen": 16,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "02:42:ac:14:00:02",
"DriverOpts": null
}
}
},
"Mounts": []
}
]
`))
}))
defer server.Close()
resolver := DockerResolver{
Client: DockerClient{
Host: server.URL[7:],
},
}
endpoints, err := resolver.Lookup(context.TODO(), "foobar-api")
if err != nil {
t.Fatal(err)
}
if len(endpoints) != 2 {
t.Error("unexpected number of endpoints")
t.Log("got: ", len(endpoints))
}
addr := "172.20.0.3:3000"
if endpoints[0].Addr.String() != addr {
t.Error("unexpected endpoint")
t.Log("got: ", endpoints[0].Addr)
t.Log("expected: ", addr)
}
}
func TestDockerHealthy(t *testing.T) {
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/info" {
w.WriteHeader(http.StatusNotFound)
return
}
w.Write([]byte(`{
"ID": "7TRN:IPZB:QYBB:VPBQ:UMPP:KARE:6ZNR:XE6T:7EWV:PKF4:ZOJD:TPYS",
"SystemStatus": [
[
"Role",
"primary"
],
[
"State",
"Healthy"
],
[
"Strategy",
"spread"
]
],
"SecurityOptions": [
"name=apparmor",
"name=seccomp,profile=default",
"name=selinux",
"name=userns"
]
}
`))
}))
defer server.Close()
resolver := DockerResolver{
Client: DockerClient{
Host: server.URL[7:],
},
}
if !resolver.Healthy(context.TODO()) {
t.Error("docker should be healthy")
}
}