func TestInitConfigDefaultConfig(t *testing.T) {
log.SetQuiet(true)
want := Config{
Backend: "etcd",
BackendNodes: []string{"http://127.0.0.1:4001"},
ClientCaKeys: "",
ClientCert: "",
ClientKey: "",
ConfDir: "/etc/confd",
Debug: false,
Interval: 600,
Noop: false,
Prefix: "/",
Quiet: false,
SRVDomain: "",
Scheme: "http",
Verbose: false,
}
if err := initConfig(); err != nil {
t.Errorf(err.Error())
}
if !reflect.DeepEqual(want, config) {
t.Errorf("initConfig() = %v, want %v", config, want)
}
}
func TestSameConfigFalse(t *testing.T) {
log.SetQuiet(true)
src, err := ioutil.TempFile("", "src")
defer os.Remove(src.Name())
if err != nil {
t.Errorf(err.Error())
}
_, err = src.WriteString("src")
if err != nil {
t.Errorf(err.Error())
}
dest, err := ioutil.TempFile("", "dest")
defer os.Remove(dest.Name())
if err != nil {
t.Errorf(err.Error())
}
_, err = dest.WriteString("dest")
if err != nil {
t.Errorf(err.Error())
}
status, err := sameConfig(src.Name(), dest.Name())
if err != nil {
t.Errorf(err.Error())
}
if status != false {
t.Errorf("Expected sameConfig(src, dest) to be %v, got %v", false, status)
}
}
func main() {
// Most flags are defined in the confd/config package which allows us to
// override configuration settings from the command line. Parse the flags now
// to make them active.
flag.Parse()
if printVersion {
fmt.Printf("confd %s\n", Version)
os.Exit(0)
}
if configFile == "" {
if IsFileExist(defaultConfigFile) {
configFile = defaultConfigFile
}
}
// Initialize the global configuration.
log.Debug("Loading confd configuration")
if err := config.LoadConfig(configFile); err != nil {
log.Fatal(err.Error())
}
// Configure logging. While you can enable debug and verbose logging, however
// if quiet is set to true then debug and verbose messages will not be printed.
log.SetQuiet(config.Quiet())
log.SetVerbose(config.Verbose())
log.SetDebug(config.Debug())
log.Notice("Starting confd")
// Create the storage client
log.Notice("Backend set to " + config.Backend())
store, err := backends.New(config.Backend())
if err != nil {
log.Fatal(err.Error())
}
signalChan := make(chan os.Signal, 1)
signal.Notify(signalChan, syscall.SIGINT, syscall.SIGTERM)
for {
runErrors := template.ProcessTemplateResources(store)
// If the -onetime flag is passed on the command line we immediately exit
// after processing the template config files.
if onetime {
if len(runErrors) > 0 {
os.Exit(1)
}
os.Exit(0)
}
select {
case c := <-signalChan:
log.Info(fmt.Sprintf("captured %v exiting...", c))
os.Exit(0)
case <-time.After(time.Duration(config.Interval()) * time.Second):
// Continue processing templates.
}
}
}
func TestIsFileExist(t *testing.T) {
log.SetQuiet(true)
result := isFileExist(fakeFile)
if result != false {
t.Errorf("Expected IsFileExist(%s) to be false, got %v", fakeFile, result)
}
f, err := ioutil.TempFile("", "")
if err != nil {
t.Fatal(err.Error())
}
defer os.Remove(f.Name())
result = isFileExist(f.Name())
if result != true {
t.Errorf("Expected IsFileExist(%s) to be true, got %v", f.Name(), result)
}
}
func TestLoadConfig(t *testing.T) {
log.SetQuiet(true)
var expected = struct {
clientCert string
clientKey string
configDir string
etcdNodes []string
interval int
prefix string
templateDir string
}{
"", "", "/etc/confd/conf.d", []string{"http://127.0.0.1:4001"},
600, "/", "/etc/confd/templates",
}
LoadConfig("")
cc := ClientCert()
if cc != expected.clientCert {
t.Errorf("Expected default clientCert = %s, got %s", expected.clientCert, cc)
}
ck := ClientKey()
if ck != expected.clientKey {
t.Errorf("Expected default clientKey = %s, got %s", expected.clientKey, ck)
}
cd := ConfigDir()
if cd != expected.configDir {
t.Errorf("Expected default configDir = %s, got %s", expected.configDir, cd)
}
en := EtcdNodes()
if en[0] != expected.etcdNodes[0] {
t.Errorf("Expected default etcdNodes = %v, got %v", expected.etcdNodes, en)
}
i := Interval()
if i != expected.interval {
t.Errorf("Expected default interval = %d, got %d", expected.interval, i)
}
p := Prefix()
if p != expected.prefix {
t.Errorf("Expected default prefix = %s, got %s", expected.prefix, p)
}
td := TemplateDir()
if td != expected.templateDir {
t.Errorf("Expected default templateDir = %s, got %s", expected.templateDir, td)
}
}
func TestBrokenTemplateResourceFile(t *testing.T) {
log.SetQuiet(true)
tempFile, err := ioutil.TempFile("", "")
defer os.Remove(tempFile.Name())
if err != nil {
t.Errorf(err.Error())
}
_, err = tempFile.WriteString(brokenTemplateResourceConfig)
if err != nil {
t.Errorf(err.Error())
}
// Create the stub etcd client.
c := etcdtest.NewClient()
// Process broken template resource config file.
_, err = NewTemplateResourceFromPath(tempFile.Name(), c)
if err == nil {
t.Errorf("Expected err not to be nil")
}
}
func main() {
// Most flags are defined in the confd/config package which allows us to
// override configuration settings from the command line. Parse the flags now
// to make them active.
flag.Parse()
if configFile == "" {
if IsFileExist(defaultConfigFile) {
configFile = defaultConfigFile
}
}
// Initialize the global configuration.
log.Debug("Loading confd configuration")
if err := config.LoadConfig(configFile); err != nil {
log.Fatal(err.Error())
}
// Configure logging. While you can enable debug and verbose logging, however
// if quiet is set to true then debug and verbose messages will not be printed.
log.SetQuiet(config.Quiet())
log.SetVerbose(config.Verbose())
log.SetDebug(config.Debug())
log.Notice("Starting confd")
// Create the etcd client upfront and use it for the life of the process.
// The etcdClient is an http.Client and designed to be reused.
log.Notice("etcd nodes set to " + strings.Join(config.EtcdNodes(), ", "))
etcdClient, err := etcdutil.NewEtcdClient(config.EtcdNodes(), config.ClientCert(), config.ClientKey(), config.ClientCaKeys())
if err != nil {
log.Fatal(err.Error())
}
for {
runErrors := template.ProcessTemplateResources(etcdClient)
// If the -onetime flag is passed on the command line we immediately exit
// after processing the template config files.
if onetime {
if len(runErrors) > 0 {
os.Exit(1)
}
os.Exit(0)
}
time.Sleep(time.Duration(config.Interval()) * time.Second)
}
}
func main() {
// Most flags are defined in the confd/config package which allows us to
// override configuration settings from the command line. Parse the flags now
// to make them active.
flag.Parse()
if configFile == "" {
if IsFileExist(defaultConfigFile) {
configFile = defaultConfigFile
}
}
// Initialize the global configuration.
log.Debug("Loading confd configuration")
if err := config.LoadConfig(configFile); err != nil {
log.Fatal(err.Error())
}
// Configure logging. While you can enable debug and verbose logging, however
// if quiet is set to true then debug and verbose messages will not be printed.
log.SetQuiet(config.Quiet())
log.SetVerbose(config.Verbose())
log.SetDebug(config.Debug())
log.Notice("Starting confd")
// Create the storage client
store, err := createStoreClient(config.Backend())
if err != nil {
log.Fatal(err.Error())
}
for {
runErrors := template.ProcessTemplateResources(store)
// If the -onetime flag is passed on the command line we immediately exit
// after processing the template config files.
if onetime {
if len(runErrors) > 0 {
os.Exit(1)
}
os.Exit(0)
}
time.Sleep(time.Duration(config.Interval()) * time.Second)
}
}
func TestProcessTemplateResources(t *testing.T) {
log.SetQuiet(true)
// Setup temporary conf, config, and template directories.
tempConfDir, err := createTempDirs()
if err != nil {
t.Errorf("Failed to create temp dirs: %s", err.Error())
}
defer os.RemoveAll(tempConfDir)
// Create the src template.
srcTemplateFile := filepath.Join(tempConfDir, "templates", "foo.tmpl")
err = ioutil.WriteFile(srcTemplateFile, []byte("foo = {{ .foo }}"), 0644)
if err != nil {
t.Error(err.Error())
}
// Create the dest.
destFile, err := ioutil.TempFile("", "")
if err != nil {
t.Errorf("Failed to create destFile: %s", err.Error())
}
defer os.Remove(destFile.Name())
// Create the template resource configuration file.
templateResourcePath := filepath.Join(tempConfDir, "conf.d", "foo.toml")
templateResourceFile, err := os.Create(templateResourcePath)
if err != nil {
t.Errorf(err.Error())
}
tmpl, err := template.New("templateResourceConfig").Parse(templateResourceConfigTmpl)
if err != nil {
t.Errorf("Unable to parse template resource template: %s", err.Error())
}
data := make(map[string]string)
data["src"] = "foo.tmpl"
data["dest"] = destFile.Name()
err = tmpl.Execute(templateResourceFile, data)
if err != nil {
t.Errorf(err.Error())
}
// Load the confd configuration settings.
if err := config.LoadConfig(""); err != nil {
t.Errorf(err.Error())
}
config.SetPrefix("")
// Use the temporary tempConfDir from above.
config.SetConfDir(tempConfDir)
// Create the stub etcd client.
c := &MockStore{}
c.AddKey("/foo", "bar")
// Process the test template resource.
runErrors := ProcessTemplateResources(c)
if len(runErrors) > 0 {
for _, e := range runErrors {
t.Errorf(e.Error())
}
}
// Verify the results.
expected := "foo = bar"
results, err := ioutil.ReadFile(destFile.Name())
if err != nil {
t.Error(err.Error())
}
if string(results) != expected {
t.Errorf("Expected contents of dest == '%s', got %s", expected, string(results))
}
}
// initConfig initializes the confd configuration by first setting defaults,
// then overriding setting from the confd config file, and finally overriding
// settings from flags set on the command line.
// It returns an error if any.
func initConfig() error {
if configFile == "" {
if _, err := os.Stat(defaultConfigFile); !os.IsNotExist(err) {
configFile = defaultConfigFile
}
}
// Set defaults.
config = Config{
Backend: "etcd",
ConfDir: "/etc/confd",
Interval: 600,
Prefix: "/",
Scheme: "http",
}
// Update config from the TOML configuration file.
if configFile == "" {
log.Warning("Skipping confd config file.")
} else {
log.Debug("Loading " + configFile)
configBytes, err := ioutil.ReadFile(configFile)
if err != nil {
return err
}
_, err = toml.Decode(string(configBytes), &config)
if err != nil {
return err
}
}
// Update config from commandline flags.
processFlags()
// Configure logging.
log.SetQuiet(config.Quiet)
log.SetVerbose(config.Verbose)
log.SetDebug(config.Debug)
// Update BackendNodes from SRV records.
if config.Backend != "env" && config.SRVDomain != "" {
log.Info("SRV domain set to " + config.SRVDomain)
srvNodes, err := getBackendNodesFromSRV(config.Backend, config.SRVDomain, config.Scheme)
if err != nil {
return errors.New("Cannot get nodes from SRV records " + err.Error())
}
config.BackendNodes = srvNodes
}
if len(config.BackendNodes) == 0 {
switch config.Backend {
case "consul":
config.BackendNodes = []string{"127.0.0.1:8500"}
case "etcd":
peerstr := os.Getenv("ETCDCTL_PEERS")
if len(peerstr) > 0 {
config.BackendNodes = strings.Split(peerstr, ",")
} else {
config.BackendNodes = []string{"http://127.0.0.1:4001"}
}
case "redis":
config.BackendNodes = []string{"127.0.0.1:6379"}
}
}
// Initialize the storage client
log.Notice("Backend set to " + config.Backend)
if config.Watch {
unsupportedBackends := map[string]bool{
"zookeeper": true,
"redis": true,
}
if unsupportedBackends[config.Backend] {
log.Notice(fmt.Sprintf("Watch is not supported for backend %s. Exiting...", config.Backend))
os.Exit(1)
}
}
backendsConfig = backends.Config{
Backend: config.Backend,
ClientCaKeys: config.ClientCaKeys,
ClientCert: config.ClientCert,
ClientKey: config.ClientKey,
BackendNodes: config.BackendNodes,
Scheme: config.Scheme,
}
// Template configuration.
templateConfig = template.Config{
ConfDir: config.ConfDir,
ConfigDir: filepath.Join(config.ConfDir, "conf.d"),
KeepStageFile: keepStageFile,
Noop: config.Noop,
Prefix: config.Prefix,
TemplateDir: filepath.Join(config.ConfDir, "templates"),
}
return nil
}
func TestProcessTemplateResources(t *testing.T) {
log.SetQuiet(true)
// Setup temporary conf, config, and template directories.
tempConfDir, err := createTempDirs()
if err != nil {
t.Errorf("Failed to create temp dirs: %s", err.Error())
}
defer os.RemoveAll(tempConfDir)
// Create the src template.
srcTemplateFile := filepath.Join(tempConfDir, "templates", "foo.tmpl")
err = ioutil.WriteFile(srcTemplateFile, []byte(`foo = {{getv "/foo"}}`), 0644)
if err != nil {
t.Error(err.Error())
}
// Create the dest.
destFile, err := ioutil.TempFile("", "")
if err != nil {
t.Errorf("Failed to create destFile: %s", err.Error())
}
defer os.Remove(destFile.Name())
// Create the template resource configuration file.
templateResourcePath := filepath.Join(tempConfDir, "conf.d", "foo.toml")
templateResourceFile, err := os.Create(templateResourcePath)
if err != nil {
t.Errorf(err.Error())
}
tmpl, err := template.New("templateResourceConfig").Parse(templateResourceConfigTmpl)
if err != nil {
t.Errorf("Unable to parse template resource template: %s", err.Error())
}
data := make(map[string]string)
data["src"] = "foo.tmpl"
data["dest"] = destFile.Name()
err = tmpl.Execute(templateResourceFile, data)
if err != nil {
t.Errorf(err.Error())
}
os.Setenv("FOO", "bar")
storeClient, err := env.NewEnvClient()
if err != nil {
t.Errorf(err.Error())
}
c := Config{
ConfDir: tempConfDir,
ConfigDir: filepath.Join(tempConfDir, "conf.d"),
StoreClient: storeClient,
TemplateDir: filepath.Join(tempConfDir, "templates"),
}
// Process the test template resource.
err = Process(c)
if err != nil {
t.Error(err.Error())
}
// Verify the results.
expected := "foo = bar"
results, err := ioutil.ReadFile(destFile.Name())
if err != nil {
t.Error(err.Error())
}
if string(results) != expected {
t.Errorf("Expected contents of dest == '%s', got %s", expected, string(results))
}
}