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traefik_kop_test.go
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traefik_kop_test.go
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package traefikkop
import (
"context"
"encoding/json"
"strings"
"testing"
"github.com/BurntSushi/toml"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/client"
"github.com/docker/go-connections/nat"
"github.com/sirupsen/logrus"
"github.com/stretchr/testify/require"
"github.com/traefik/traefik/v2/pkg/config/dynamic"
"github.com/traefik/traefik/v2/pkg/log"
)
func init() {
logrus.SetLevel(logrus.DebugLevel)
log.SetLevel(logrus.DebugLevel)
log.WithoutContext().WriterLevel(logrus.DebugLevel)
}
type fakeDockerClient struct {
client.APIClient
containers []types.Container
container types.ContainerJSON
err error
}
func (c *fakeDockerClient) ContainerList(ctx context.Context, options types.ContainerListOptions) ([]types.Container, error) {
return c.containers, nil
}
func (c *fakeDockerClient) ContainerInspect(ctx context.Context, container string) (types.ContainerJSON, error) {
return c.container, c.err
}
func Test_replaceIPs(t *testing.T) {
cfg := &dynamic.Configuration{}
err := json.Unmarshal([]byte(NGINX_CONF_JSON), cfg)
require.NoError(t, err)
require.Contains(t, cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL, "172.20.0.2")
// replace and test check again
replaceIPs(&fakeDockerClient{}, cfg, "7.7.7.7")
require.NotContains(t, cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL, "172.20.0.2")
// full url
require.Equal(t, "http://7.7.7.7:80", cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL)
// test again with larger fixture, tcp sservice
cfg = &dynamic.Configuration{}
_, err = toml.DecodeFile("./fixtures/sample.toml", &cfg)
require.NoError(t, err)
require.Equal(t, "foobar", cfg.TCP.Services["TCPService0"].LoadBalancer.Servers[0].Address)
replaceIPs(&fakeDockerClient{}, cfg, "7.7.7.7")
require.Equal(t, "7.7.7.7", cfg.TCP.Services["TCPService0"].LoadBalancer.Servers[0].Address)
}
func createTestClient(labels map[string]string) *fakeDockerClient {
return &fakeDockerClient{
containers: []types.Container{
types.Container{
ID: "foobar_id",
},
},
container: types.ContainerJSON{
ContainerJSONBase: &types.ContainerJSONBase{
ID: "foobar_id",
HostConfig: &container.HostConfig{},
},
Config: &container.Config{
Labels: labels,
},
},
}
}
func Test_replacePorts(t *testing.T) {
portMap := nat.PortMap{
"80": []nat.PortBinding{
{HostIP: "172.20.0.2", HostPort: "8888"},
},
}
portLabel := "traefik.http.services.nginx.loadbalancer.server.port"
dc := createTestClient(map[string]string{
"traefik.http.services.nginx.loadbalancer.server.scheme": "http",
portLabel: "8888",
})
cfg := &dynamic.Configuration{}
err := json.Unmarshal([]byte(NGINX_CONF_JSON), cfg)
require.NoError(t, err)
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL, "172.20.0.2:80"))
// explicit label present
replaceIPs(dc, cfg, "4.4.4.4")
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:80"))
// without label but no port binding
delete(dc.container.Config.Labels, portLabel)
json.Unmarshal([]byte(NGINX_CONF_JSON), cfg)
replaceIPs(dc, cfg, "4.4.4.4")
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:80"))
// with port binding
dc.container.HostConfig.PortBindings = portMap
json.Unmarshal([]byte(NGINX_CONF_JSON), cfg)
replaceIPs(dc, cfg, "4.4.4.4")
require.False(t, strings.HasSuffix(cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:80"))
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:8888"))
}
func Test_replacePortsNoService(t *testing.T) {
portMap := nat.PortMap{
"80": []nat.PortBinding{
{HostIP: "172.20.0.2", HostPort: "8888"},
},
}
dc := createTestClient(map[string]string{
"traefik.http.routers.nginx.entrypoints": "web-secure",
})
cfg := &dynamic.Configuration{}
err := json.Unmarshal([]byte(NGINX_CONF_JSON_DIFFRENT_SERVICE_NAME), cfg)
require.NoError(t, err)
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx-nginx@docker"].LoadBalancer.Servers[0].URL, "172.20.0.2:80"))
// explicit label present
replaceIPs(dc, cfg, "4.4.4.4")
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx-nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:80"))
// without label but no port binding
json.Unmarshal([]byte(NGINX_CONF_JSON_DIFFRENT_SERVICE_NAME), cfg)
replaceIPs(dc, cfg, "4.4.4.4")
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx-nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:80"))
// with port binding
dc.container.HostConfig.PortBindings = portMap
json.Unmarshal([]byte(NGINX_CONF_JSON_DIFFRENT_SERVICE_NAME), cfg)
replaceIPs(dc, cfg, "4.4.4.4")
require.False(t, strings.HasSuffix(cfg.HTTP.Services["nginx-nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:80"))
require.True(t, strings.HasSuffix(cfg.HTTP.Services["nginx-nginx@docker"].LoadBalancer.Servers[0].URL, "4.4.4.4:8888"))
}