339 lines
8 KiB
Go
339 lines
8 KiB
Go
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package file
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"testing"
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"time"
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"github.com/containous/traefik/old/types"
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"github.com/containous/traefik/safe"
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"github.com/stretchr/testify/assert"
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)
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// createRandomFile Helper
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func createRandomFile(t *testing.T, tempDir string, contents ...string) *os.File {
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return createFile(t, tempDir, fmt.Sprintf("temp%d.toml", time.Now().UnixNano()), contents...)
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}
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// createFile Helper
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func createFile(t *testing.T, tempDir string, name string, contents ...string) *os.File {
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t.Helper()
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fileName := path.Join(tempDir, name)
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tempFile, err := os.Create(fileName)
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if err != nil {
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t.Fatal(err)
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}
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for _, content := range contents {
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_, err := tempFile.WriteString(content)
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if err != nil {
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t.Fatal(err)
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}
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}
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err = tempFile.Close()
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if err != nil {
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t.Fatal(err)
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}
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return tempFile
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}
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// createTempDir Helper
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func createTempDir(t *testing.T, dir string) string {
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t.Helper()
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d, err := ioutil.TempDir("", dir)
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if err != nil {
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t.Fatal(err)
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}
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return d
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}
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// createFrontendConfiguration Helper
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func createFrontendConfiguration(n int) string {
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conf := "[frontends]\n"
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for i := 1; i <= n; i++ {
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conf += fmt.Sprintf(` [frontends."frontend%[1]d"]
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backend = "backend%[1]d"
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`, i)
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}
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return conf
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}
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// createBackendConfiguration Helper
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func createBackendConfiguration(n int) string {
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conf := "[backends]\n"
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for i := 1; i <= n; i++ {
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conf += fmt.Sprintf(` [backends.backend%[1]d]
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[backends.backend%[1]d.servers.server1]
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url = "http://172.17.0.%[1]d:80"
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`, i)
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}
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return conf
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}
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// createTLS Helper
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func createTLS(n int) string {
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var conf string
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for i := 1; i <= n; i++ {
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conf += fmt.Sprintf(`[[TLS]]
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EntryPoints = ["https"]
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[TLS.Certificate]
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CertFile = "integration/fixtures/https/snitest%[1]d.com.cert"
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KeyFile = "integration/fixtures/https/snitest%[1]d.com.key"
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`, i)
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}
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return conf
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}
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type ProvideTestCase struct {
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desc string
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directoryContent []string
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fileContent string
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traefikFileContent string
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expectedNumFrontend int
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expectedNumBackend int
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expectedNumTLSConf int
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}
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func getTestCases() []ProvideTestCase {
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return []ProvideTestCase{
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{
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desc: "simple file",
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fileContent: createFrontendConfiguration(2) + createBackendConfiguration(3) + createTLS(4),
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expectedNumFrontend: 2,
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expectedNumBackend: 3,
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expectedNumTLSConf: 4,
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},
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{
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desc: "simple file and a traefik file",
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fileContent: createFrontendConfiguration(2) + createBackendConfiguration(3) + createTLS(4),
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traefikFileContent: `
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debug=true
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`,
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expectedNumFrontend: 2,
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expectedNumBackend: 3,
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expectedNumTLSConf: 4,
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},
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{
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desc: "template file",
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fileContent: `
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[frontends]
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{{ range $i, $e := until 20 }}
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[frontends.frontend{{ $e }}]
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backend = "backend"
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{{ end }}
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`,
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expectedNumFrontend: 20,
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},
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{
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desc: "simple directory",
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directoryContent: []string{
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createFrontendConfiguration(2),
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createBackendConfiguration(3),
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createTLS(4),
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},
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expectedNumFrontend: 2,
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expectedNumBackend: 3,
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expectedNumTLSConf: 4,
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},
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{
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desc: "template in directory",
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directoryContent: []string{
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`
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[frontends]
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{{ range $i, $e := until 20 }}
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[frontends.frontend{{ $e }}]
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backend = "backend"
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{{ end }}
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`,
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`
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[backends]
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{{ range $i, $e := until 20 }}
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[backends.backend{{ $e }}]
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[backends.backend{{ $e }}.servers.server1]
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url="http://127.0.0.1"
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{{ end }}
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`,
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},
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expectedNumFrontend: 20,
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expectedNumBackend: 20,
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},
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{
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desc: "simple traefik file",
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traefikFileContent: `
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debug=true
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[file]
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` + createFrontendConfiguration(2) + createBackendConfiguration(3) + createTLS(4),
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expectedNumFrontend: 2,
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expectedNumBackend: 3,
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expectedNumTLSConf: 4,
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},
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{
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desc: "simple traefik file with templating",
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traefikFileContent: `
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temp="{{ getTag \"test\" }}"
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[file]
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` + createFrontendConfiguration(2) + createBackendConfiguration(3) + createTLS(4),
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expectedNumFrontend: 2,
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expectedNumBackend: 3,
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expectedNumTLSConf: 4,
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},
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}
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}
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func TestProvideWithoutWatch(t *testing.T) {
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for _, test := range getTestCases() {
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test := test
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t.Run(test.desc+" without watch", func(t *testing.T) {
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t.Parallel()
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provider, clean := createProvider(t, test, false)
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defer clean()
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configChan := make(chan types.ConfigMessage)
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go func() {
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err := provider.Provide(configChan, safe.NewPool(context.Background()))
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assert.NoError(t, err)
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}()
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timeout := time.After(time.Second)
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select {
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case config := <-configChan:
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assert.Len(t, config.Configuration.Backends, test.expectedNumBackend)
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assert.Len(t, config.Configuration.Frontends, test.expectedNumFrontend)
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assert.Len(t, config.Configuration.TLS, test.expectedNumTLSConf)
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case <-timeout:
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t.Errorf("timeout while waiting for config")
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}
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})
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}
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}
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func TestProvideWithWatch(t *testing.T) {
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for _, test := range getTestCases() {
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test := test
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t.Run(test.desc+" with watch", func(t *testing.T) {
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t.Parallel()
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provider, clean := createProvider(t, test, true)
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defer clean()
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configChan := make(chan types.ConfigMessage)
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go func() {
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err := provider.Provide(configChan, safe.NewPool(context.Background()))
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assert.NoError(t, err)
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}()
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timeout := time.After(time.Second)
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select {
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case config := <-configChan:
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assert.Len(t, config.Configuration.Backends, 0)
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assert.Len(t, config.Configuration.Frontends, 0)
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assert.Len(t, config.Configuration.TLS, 0)
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case <-timeout:
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t.Errorf("timeout while waiting for config")
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}
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if len(test.fileContent) > 0 {
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if err := ioutil.WriteFile(provider.Filename, []byte(test.fileContent), 0755); err != nil {
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t.Error(err)
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}
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}
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if len(test.traefikFileContent) > 0 {
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if err := ioutil.WriteFile(provider.TraefikFile, []byte(test.traefikFileContent), 0755); err != nil {
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t.Error(err)
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}
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}
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if len(test.directoryContent) > 0 {
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for _, fileContent := range test.directoryContent {
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createRandomFile(t, provider.Directory, fileContent)
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}
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}
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timeout = time.After(time.Second * 1)
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var numUpdates, numBackends, numFrontends, numTLSConfs int
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for {
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select {
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case config := <-configChan:
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numUpdates++
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numBackends = len(config.Configuration.Backends)
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numFrontends = len(config.Configuration.Frontends)
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numTLSConfs = len(config.Configuration.TLS)
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t.Logf("received update #%d: backends %d/%d, frontends %d/%d, TLS configs %d/%d", numUpdates, numBackends, test.expectedNumBackend, numFrontends, test.expectedNumFrontend, numTLSConfs, test.expectedNumTLSConf)
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if numBackends == test.expectedNumBackend && numFrontends == test.expectedNumFrontend && numTLSConfs == test.expectedNumTLSConf {
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return
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}
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case <-timeout:
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t.Fatal("timeout while waiting for config")
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}
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}
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})
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}
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}
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func TestErrorWhenEmptyConfig(t *testing.T) {
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provider := &Provider{}
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configChan := make(chan types.ConfigMessage)
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errorChan := make(chan struct{})
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go func() {
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err := provider.Provide(configChan, safe.NewPool(context.Background()))
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assert.Error(t, err)
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close(errorChan)
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}()
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timeout := time.After(time.Second)
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select {
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case <-configChan:
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t.Fatal("We should not receive config message")
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case <-timeout:
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t.Fatal("timeout while waiting for config")
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case <-errorChan:
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}
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}
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func createProvider(t *testing.T, test ProvideTestCase, watch bool) (*Provider, func()) {
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tempDir := createTempDir(t, "testdir")
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provider := &Provider{}
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provider.Watch = watch
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if len(test.directoryContent) > 0 {
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if !watch {
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for _, fileContent := range test.directoryContent {
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createRandomFile(t, tempDir, fileContent)
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}
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}
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provider.Directory = tempDir
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}
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if len(test.fileContent) > 0 {
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if watch {
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test.fileContent = ""
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}
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filename := createRandomFile(t, tempDir, test.fileContent)
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provider.Filename = filename.Name()
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}
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if len(test.traefikFileContent) > 0 {
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if watch {
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test.traefikFileContent = ""
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}
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filename := createRandomFile(t, tempDir, test.traefikFileContent)
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provider.TraefikFile = filename.Name()
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}
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return provider, func() {
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os.Remove(tempDir)
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}
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}
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