traefik/pkg/provider/file/file_test.go

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package file
import (
"context"
"io"
"io/ioutil"
"os"
"path/filepath"
"strconv"
"testing"
"time"
"github.com/containous/traefik/pkg/config/dynamic"
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"github.com/containous/traefik/pkg/safe"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type ProvideTestCase struct {
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desc string
directoryPaths []string
filePath string
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expectedNumRouter int
expectedNumService int
expectedNumTLSConf int
}
func TestTLSContent(t *testing.T) {
tempDir := createTempDir(t, "testdir")
defer os.RemoveAll(tempDir)
fileTLS, err := createTempFile("./fixtures/toml/tls_file.cert", tempDir)
require.NoError(t, err)
fileConfig, err := ioutil.TempFile(tempDir, "temp*.toml")
require.NoError(t, err)
content := `
[[tls.certificates]]
certFile = "` + fileTLS.Name() + `"
keyFile = "` + fileTLS.Name() + `"
`
_, err = fileConfig.Write([]byte(content))
require.NoError(t, err)
provider := &Provider{}
configuration, err := provider.loadFileConfig(fileConfig.Name(), true)
require.NoError(t, err)
require.Equal(t, "CONTENT", configuration.TLS.Certificates[0].Certificate.CertFile.String())
require.Equal(t, "CONTENT", configuration.TLS.Certificates[0].Certificate.KeyFile.String())
}
func TestErrorWhenEmptyConfig(t *testing.T) {
provider := &Provider{}
configChan := make(chan dynamic.Message)
errorChan := make(chan struct{})
go func() {
err := provider.Provide(configChan, safe.NewPool(context.Background()))
assert.Error(t, err)
close(errorChan)
}()
timeout := time.After(time.Second)
select {
case <-configChan:
t.Fatal("We should not receive config message")
case <-timeout:
t.Fatal("timeout while waiting for config")
case <-errorChan:
}
}
func TestProvideWithoutWatch(t *testing.T) {
for _, test := range getTestCases() {
t.Run(test.desc+" without watch", func(t *testing.T) {
provider, clean := createProvider(t, test, false)
defer clean()
configChan := make(chan dynamic.Message)
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provider.DebugLogGeneratedTemplate = true
go func() {
err := provider.Provide(configChan, safe.NewPool(context.Background()))
assert.NoError(t, err)
}()
timeout := time.After(time.Second)
select {
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case conf := <-configChan:
require.NotNil(t, conf.Configuration.HTTP)
assert.Len(t, conf.Configuration.HTTP.Services, test.expectedNumService)
assert.Len(t, conf.Configuration.HTTP.Routers, test.expectedNumRouter)
require.NotNil(t, conf.Configuration.TLS)
assert.Len(t, conf.Configuration.TLS.Certificates, test.expectedNumTLSConf)
case <-timeout:
t.Errorf("timeout while waiting for config")
}
})
}
}
func TestProvideWithWatch(t *testing.T) {
for _, test := range getTestCases() {
t.Run(test.desc+" with watch", func(t *testing.T) {
provider, clean := createProvider(t, test, true)
defer clean()
configChan := make(chan dynamic.Message)
go func() {
err := provider.Provide(configChan, safe.NewPool(context.Background()))
assert.NoError(t, err)
}()
timeout := time.After(time.Second)
select {
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case conf := <-configChan:
require.NotNil(t, conf.Configuration.HTTP)
assert.Len(t, conf.Configuration.HTTP.Services, 0)
assert.Len(t, conf.Configuration.HTTP.Routers, 0)
require.NotNil(t, conf.Configuration.TLS)
assert.Len(t, conf.Configuration.TLS.Certificates, 0)
case <-timeout:
t.Errorf("timeout while waiting for config")
}
if len(test.filePath) > 0 {
err := copyFile(test.filePath, provider.Filename)
require.NoError(t, err)
}
if len(test.directoryPaths) > 0 {
for i, filePath := range test.directoryPaths {
err := copyFile(filePath, filepath.Join(provider.Directory, strconv.Itoa(i)+filepath.Ext(filePath)))
require.NoError(t, err)
}
}
timeout = time.After(time.Second * 1)
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var numUpdates, numServices, numRouters, numTLSConfs int
for {
select {
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case conf := <-configChan:
numUpdates++
numServices = len(conf.Configuration.HTTP.Services)
numRouters = len(conf.Configuration.HTTP.Routers)
numTLSConfs = len(conf.Configuration.TLS.Certificates)
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t.Logf("received update #%d: services %d/%d, routers %d/%d, TLS configs %d/%d", numUpdates, numServices, test.expectedNumService, numRouters, test.expectedNumRouter, numTLSConfs, test.expectedNumTLSConf)
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if numServices == test.expectedNumService && numRouters == test.expectedNumRouter && numTLSConfs == test.expectedNumTLSConf {
return
}
case <-timeout:
t.Fatal("timeout while waiting for config")
}
}
})
}
}
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func getTestCases() []ProvideTestCase {
return []ProvideTestCase{
{
desc: "simple file",
filePath: "./fixtures/toml/simple_file_01.toml",
expectedNumRouter: 3,
expectedNumService: 6,
expectedNumTLSConf: 5,
},
{
desc: "simple file yaml",
filePath: "./fixtures/yaml/simple_file_01.yml",
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expectedNumRouter: 3,
expectedNumService: 6,
expectedNumTLSConf: 5,
},
{
desc: "template file",
filePath: "./fixtures/toml/template_file.toml",
expectedNumRouter: 20,
},
{
desc: "template file yaml",
filePath: "./fixtures/yaml/template_file.yml",
expectedNumRouter: 20,
},
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{
desc: "simple directory",
directoryPaths: []string{
"./fixtures/toml/dir01_file01.toml",
"./fixtures/toml/dir01_file02.toml",
"./fixtures/toml/dir01_file03.toml",
},
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expectedNumRouter: 2,
expectedNumService: 3,
expectedNumTLSConf: 4,
},
{
desc: "simple directory yaml",
directoryPaths: []string{
"./fixtures/yaml/dir01_file01.yml",
"./fixtures/yaml/dir01_file02.yml",
"./fixtures/yaml/dir01_file03.yml",
},
expectedNumRouter: 2,
expectedNumService: 3,
expectedNumTLSConf: 4,
},
{
desc: "template in directory",
directoryPaths: []string{
"./fixtures/toml/template_in_directory_file01.toml",
"./fixtures/toml/template_in_directory_file02.toml",
},
expectedNumRouter: 20,
expectedNumService: 20,
},
{
desc: "template in directory yaml",
directoryPaths: []string{
"./fixtures/yaml/template_in_directory_file01.yml",
"./fixtures/yaml/template_in_directory_file02.yml",
},
expectedNumRouter: 20,
expectedNumService: 20,
},
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}
}
func createProvider(t *testing.T, test ProvideTestCase, watch bool) (*Provider, func()) {
tempDir := createTempDir(t, "testdir")
provider := &Provider{}
provider.Watch = true
if len(test.directoryPaths) > 0 {
if !watch {
for _, filePath := range test.directoryPaths {
var err error
_, err = createTempFile(filePath, tempDir)
require.NoError(t, err)
}
}
provider.Directory = tempDir
}
if len(test.filePath) > 0 {
var file *os.File
if watch {
var err error
file, err = ioutil.TempFile(tempDir, "temp*"+filepath.Ext(test.filePath))
require.NoError(t, err)
} else {
var err error
file, err = createTempFile(test.filePath, tempDir)
require.NoError(t, err)
}
provider.Filename = file.Name()
}
return provider, func() {
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os.RemoveAll(tempDir)
}
}
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// createTempDir Helper
func createTempDir(t *testing.T, dir string) string {
t.Helper()
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d, err := ioutil.TempDir("", dir)
if err != nil {
t.Fatal(err)
}
return d
}
func copyFile(srcPath, dstPath string) error {
dst, err := os.OpenFile(dstPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
if err != nil {
return err
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}
defer dst.Close()
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src, err := os.Open(srcPath)
if err != nil {
return err
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}
defer src.Close()
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_, err = io.Copy(dst, src)
return err
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}
func createTempFile(srcPath, tempDir string) (*os.File, error) {
file, err := ioutil.TempFile(tempDir, "temp*"+filepath.Ext(srcPath))
if err != nil {
return nil, err
}
defer file.Close()
src, err := os.Open(srcPath)
if err != nil {
return nil, err
}
defer src.Close()
_, err = io.Copy(file, src)
return file, err
}