func TestTreeFunc_missingData(t *testing.T) {
	d, err := dep.ParseStoreKeyPrefix("non-existing")
	if err != nil {
		t.Fatal(err)
	}

	brain := NewBrain()

	used := make(map[string]dep.Dependency)
	missing := make(map[string]dep.Dependency)

	f := treeFunc(brain, used, missing)
	result, err := f("non-existing")
	if err != nil {
		t.Fatal(err)
	}

	expected := []*dep.KeyPair{}

	if !reflect.DeepEqual(result, expected) {
		t.Errorf("expected %q to be %q", result, expected)
	}

	if _, ok := used[d.HashCode()]; !ok {
		t.Errorf("expected dep to be used")
	}

	if _, ok := missing[d.HashCode()]; !ok {
		t.Errorf("expected dep to be missing")
	}
}
Exemplo n.º 2
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func TestParseFlags_prefixes(t *testing.T) {
	cli := NewCLI(ioutil.Discard, ioutil.Discard)
	config, _, _, err := cli.parseFlags([]string{
		"-prefix", "global@nyc1:backup",
	})
	if err != nil {
		t.Fatal(err)
	}

	if len(config.Prefixes) != 1 {
		t.Fatal("expected 1 prefix")
	}

	d, err := dep.ParseStoreKeyPrefix("global@nyc1")
	if err != nil {
		t.Fatal(err)
	}
	expected := &Prefix{
		Source:      d,
		SourceRaw:   "global@nyc1",
		Destination: "backup",
	}

	if !reflect.DeepEqual(config.Prefixes[0], expected) {
		t.Errorf("expected %q to be %q", config.Prefixes[0], expected)
	}
}
Exemplo n.º 3
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// lsFunc returns or accumulates keyPrefix dependencies.
func lsFunc(brain *Brain,
	used, missing map[string]dep.Dependency) func(string) ([]*dep.KeyPair, error) {
	return func(s string) ([]*dep.KeyPair, error) {
		result := []*dep.KeyPair{}

		if len(s) == 0 {
			return result, nil
		}

		d, err := dep.ParseStoreKeyPrefix(s)
		if err != nil {
			return result, err
		}

		addDependency(used, d)

		// Only return non-empty top-level keys
		if value, ok := brain.Recall(d); ok {
			for _, pair := range value.([]*dep.KeyPair) {
				if pair.Key != "" && !strings.Contains(pair.Key, "/") {
					result = append(result, pair)
				}
			}
			return result, nil
		}

		addDependency(missing, d)

		return result, nil
	}
}
Exemplo n.º 4
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func TestReceive_receivesData(t *testing.T) {
	prefix, err := dep.ParseStoreKeyPrefix("foo/bar")
	if err != nil {
		t.Fatal(err)
	}

	config := testConfig(`
		prefix {
			path = "foo/bar"
		}
	`, t)

	runner, err := NewRunner(config, []string{"env"}, true)
	if err != nil {
		t.Fatal(err)
	}
	runner.outStream, runner.errStream = ioutil.Discard, ioutil.Discard

	data := []*dep.KeyPair{&dep.KeyPair{Path: "foo/bar"}}
	runner.Receive(prefix, data)

	if !reflect.DeepEqual(runner.data[prefix.HashCode()], data) {
		t.Errorf("expected %#v to be %#v", runner.data[prefix.HashCode()], data)
	}
}
// treeFunc returns or accumulates keyPrefix dependencies.
func treeFunc(brain *Brain,
	used, missing map[string]dep.Dependency) func(string) ([]*dep.KeyPair, error) {
	return func(s string) ([]*dep.KeyPair, error) {
		result := make([]*dep.KeyPair, 0)

		if len(s) == 0 {
			return result, nil
		}

		d, err := dep.ParseStoreKeyPrefix(s)
		if err != nil {
			return result, err
		}

		addDependency(used, d)

		// Only return non-empty top-level keys
		if value, ok := brain.Recall(d); ok {
			for _, pair := range value.([]*dep.KeyPair) {
				parts := strings.Split(pair.Key, "/")
				if parts[len(parts)-1] != "" {
					result = append(result, pair)
				}
			}
			return result, nil
		}

		addDependency(missing, d)

		return result, nil
	}
}
Exemplo n.º 6
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// ParsePrefix parses a prefix of the format "source@dc:destination" into the
// Prefix component.
func ParsePrefix(s string) (*Prefix, error) {
	if len(strings.TrimSpace(s)) < 1 {
		return nil, fmt.Errorf("cannot specify empty prefix declaration")
	}

	var sourceRaw, destination string
	parts := prefixRe.FindAllString(s, -1)

	switch len(parts) {
	case 1:
		sourceRaw = parts[0]
	case 2:
		sourceRaw, destination = parts[0], parts[1]
	default:
		return nil, fmt.Errorf("invalid prefix declaration format")
	}

	source, err := dep.ParseStoreKeyPrefix(sourceRaw)
	if err != nil {
		return nil, err
	}

	if destination == "" {
		destination = source.Prefix
	}
	// ensure destination prefix ends with "/"
	destination = strings.TrimSuffix(destination, "/") + "/"

	return &Prefix{
		Source:      source,
		SourceRaw:   sourceRaw,
		Destination: destination,
	}, nil
}
Exemplo n.º 7
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func TestRun_doublePass(t *testing.T) {
	in := test.CreateTempfile([]byte(`
		{{ range ls "services" }}
			{{ range service .Key }}
				{{.Node}} {{.Address}}:{{.Port}}
			{{ end }}
		{{ end }}
  `), t)
	defer test.DeleteTempfile(in, t)

	config := DefaultConfig()
	config.Merge(&Config{
		ConfigTemplates: []*ConfigTemplate{
			&ConfigTemplate{Source: in.Name()},
		},
	})

	runner, err := NewRunner(config, true, false)
	if err != nil {
		t.Fatal(err)
	}

	if len(runner.dependencies) != 0 {
		t.Errorf("expected %d to be %d", len(runner.dependencies), 0)
	}

	if err := runner.Run(); err != nil {
		t.Fatal(err)
	}

	if len(runner.dependencies) != 1 {
		t.Errorf("expected %d to be %d", len(runner.dependencies), 1)
	}

	d, err := dep.ParseStoreKeyPrefix("services")
	if err != nil {
		t.Fatal(err)
	}
	data := []*dep.KeyPair{
		&dep.KeyPair{Key: "service1"},
		&dep.KeyPair{Key: "service2"},
		&dep.KeyPair{Key: "service3"},
	}
	runner.Receive(d, data)

	if err := runner.Run(); err != nil {
		t.Fatal(err)
	}

	if len(runner.dependencies) != 4 {
		t.Errorf("expected %d to be %d", len(runner.dependencies), 4)
	}
}
Exemplo n.º 8
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func TestMerge_prefixes(t *testing.T) {
	global, err := dep.ParseStoreKeyPrefix("global/time")
	if err != nil {
		t.Fatal(err)
	}

	redis, err := dep.ParseStoreKeyPrefix("config/redis")
	if err != nil {
		t.Fatal(err)
	}

	config := testConfig(`
		prefixes = ["global/time"]
	`, t)
	config.Merge(testConfig(`
		prefixes = ["config/redis"]
	`, t))

	expected := []*dep.StoreKeyPrefix{global, redis}
	if !reflect.DeepEqual(config.Prefixes, expected) {
		t.Errorf("expected \n\n%#v\n\n to be \n\n%#v\n\n", config.Prefixes, expected)
	}
}
Exemplo n.º 9
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func TestParseFlags_prefix(t *testing.T) {
	cli := NewCLI(ioutil.Discard, ioutil.Discard)
	config, _, _, _, err := cli.parseFlags([]string{
		"-prefix", "global",
	})
	if err != nil {
		t.Fatal(err)
	}

	expected, err := dep.ParseStoreKeyPrefix("global")
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(config.Prefixes[0], expected) {
		t.Errorf("expected %#v to be %#v", config.Prefixes[0], expected)
	}
}
Exemplo n.º 10
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func TestRun_sanitize(t *testing.T) {
	prefix, err := dep.ParseStoreKeyPrefix("foo/bar")
	if err != nil {
		t.Fatal(err)
	}

	config := testConfig(`
		sanitize = true
		prefixes = ["foo/bar"]
	`, t)

	runner, err := NewRunner(config, []string{"env"}, true)
	if err != nil {
		t.Fatal(err)
	}

	outStream, errStream := new(bytes.Buffer), new(bytes.Buffer)
	runner.outStream, runner.errStream = outStream, errStream

	pair := []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "foo/bar",
			Key:   "b*a*r",
			Value: "baz",
		},
	}

	runner.Receive(prefix, pair)

	exitCh, err := runner.Run()
	if err != nil {
		t.Fatal(err)
	}

	select {
	case err := <-runner.ErrCh:
		t.Fatal(err)
	case <-exitCh:
		expected := "b_a_r=baz"
		if !strings.Contains(outStream.String(), expected) {
			t.Fatalf("expected %q to include %q", outStream.String(), expected)
		}
	}
}
Exemplo n.º 11
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func TestParsePrefix_source(t *testing.T) {
	source := "global"
	prefix, err := ParsePrefix(source)
	if err != nil {
		t.Fatal(err)
	}

	if prefix.SourceRaw != source {
		t.Errorf("expected %q to equal %q", prefix.SourceRaw, source)
	}

	d, err := dep.ParseStoreKeyPrefix("global")
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(prefix.Source, d) {
		t.Errorf("expected %#v to equal %#v", prefix.Source, d)
	}
}
func TestTreeFunc_hasData(t *testing.T) {
	d, err := dep.ParseStoreKeyPrefix("existing")
	if err != nil {
		t.Fatal(err)
	}

	data := []*dep.KeyPair{
		&dep.KeyPair{Key: "", Value: ""},
		&dep.KeyPair{Key: "user/sethvargo", Value: "true"},
		&dep.KeyPair{Key: "maxconns", Value: "11"},
		&dep.KeyPair{Key: "minconns", Value: "2"},
	}

	brain := NewBrain()
	brain.Remember(d, data)

	used := make(map[string]dep.Dependency)
	missing := make(map[string]dep.Dependency)

	f := treeFunc(brain, used, missing)
	result, err := f("existing")
	if err != nil {
		t.Fatal(err)
	}

	expected := []*dep.KeyPair{
		&dep.KeyPair{Key: "user/sethvargo", Value: "true"},
		&dep.KeyPair{Key: "maxconns", Value: "11"},
		&dep.KeyPair{Key: "minconns", Value: "2"},
	}

	if !reflect.DeepEqual(result, expected) {
		t.Errorf("expected %q to be %q", result, expected)
	}

	if len(missing) != 0 {
		t.Errorf("expected missing to have 0 elements, but had %d", len(missing))
	}

	if _, ok := used[d.HashCode()]; !ok {
		t.Errorf("expected dep to be used")
	}
}
Exemplo n.º 13
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func TestRun_exitCh(t *testing.T) {
	prefix, err := dep.ParseStoreKeyPrefix("foo/bar")
	if err != nil {
		t.Fatal(err)
	}

	config := testConfig(`
		prefixes = ["foo/bar"]
	`, t)

	runner, err := NewRunner(config, []string{"env"}, true)
	if err != nil {
		t.Fatal(err)
	}

	outStream, errStream := new(bytes.Buffer), new(bytes.Buffer)
	runner.outStream, runner.errStream = outStream, errStream

	pair := []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "foo/bar",
			Key:   "bar",
			Value: "baz",
		},
	}

	runner.Receive(prefix, pair)

	exitCh, err := runner.Run()
	if err != nil {
		t.Fatal(err)
	}

	select {
	case err := <-runner.ErrCh:
		t.Fatal(err)
	case <-exitCh:
		// Ok
	}
}
Exemplo n.º 14
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// NewRunner accepts a JsonExport, and boolean value for once mode.
func NewRunner(config *JsonExport, once bool) (*Runner, error) {
	var err error

	log.Printf("[INFO] (runner) creating new runner (once: %v)\n", once)

	runner := &Runner{
		config: config,
		once:   once,
	}

	s := strings.TrimPrefix(config.Prefix, "/")
	runner.Prefix, err = dep.ParseStoreKeyPrefix(s)
	if err != nil {
		return nil, err
	}

	if err := runner.init(); err != nil {
		return nil, err
	}

	return runner, nil
}
Exemplo n.º 15
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func TestParsePrefix_destination(t *testing.T) {
	source, destination := "global@nyc4", "backup"
	prefix, err := ParsePrefix(fmt.Sprintf("%s:%s", source, destination))
	if err != nil {
		t.Fatal(err)
	}

	if prefix.SourceRaw != source {
		t.Errorf("expected %q to equal %q", prefix.SourceRaw, source)
	}

	d, err := dep.ParseStoreKeyPrefix("global@nyc4")
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(prefix.Source, d) {
		t.Errorf("expected %#v to equal %#v", prefix.Source, d)
	}
	if prefix.Destination != destination {
		t.Errorf("expected %q to equal %q", prefix.Destination, destination)
	}
}
Exemplo n.º 16
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// ParseConfig reads the configuration file at the given path and returns a new
// Config struct with the data populated.
func ParseConfig(path string) (*Config, error) {
	var errs *multierror.Error

	// Read the contents of the file
	contents, err := ioutil.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf("error reading config at %q: %s", path, err)
	}

	// Parse the file (could be HCL or JSON)
	var shadow interface{}
	if err := hcl.Decode(&shadow, string(contents)); err != nil {
		return nil, fmt.Errorf("error decoding config at %q: %s", path, err)
	}

	// Convert to a map and flatten the keys we want to flatten
	parsed, ok := shadow.(map[string]interface{})
	if !ok {
		return nil, fmt.Errorf("error converting config at %q", path)
	}
	flattenKeys(parsed, []string{"auth", "ssl", "syslog"})

	// Parse the prefixes
	if raw, ok := parsed["prefixes"]; ok {
		if typed, ok := raw.([]interface{}); !ok {
			err = fmt.Errorf("error converting prefixes to []interface{} at %q, was %T", path, raw)
			errs = multierror.Append(errs, err)
			delete(parsed, "prefixes")
		} else {
			prefixes := make([]*dep.StoreKeyPrefix, 0, len(typed))
			for _, p := range typed {
				if s, ok := p.(string); ok {
					if prefix, err := dep.ParseStoreKeyPrefix(s); err != nil {
						err = fmt.Errorf("error parsing prefix %q at %q: %s", p, path, err)
						errs = multierror.Append(errs, err)
					} else {
						prefixes = append(prefixes, prefix)
					}
				} else {
					err = fmt.Errorf("error converting %T to string", p)
					errs = multierror.Append(errs, err)
					delete(parsed, "prefixes")
				}
			}
			parsed["prefixes"] = prefixes
		}
	}

	// Parse the wait component
	if raw, ok := parsed["wait"]; ok {
		if typed, ok := raw.(string); !ok {
			err = fmt.Errorf("error converting wait to string at %q", path)
			errs = multierror.Append(errs, err)
			delete(parsed, "wait")
		} else {
			if wait, err := watch.ParseWait(typed); err != nil {
				err = fmt.Errorf("error parsing wait at %q: %s", path, err)
				errs = multierror.Append(errs, err)
				delete(parsed, "wait")
			} else {
				parsed["wait"] = map[string]time.Duration{
					"min": wait.Min,
					"max": wait.Max,
				}
			}
		}
	}

	// Create a new, empty config
	config := new(Config)

	// Use mapstructure to populate the basic config fields
	metadata := new(mapstructure.Metadata)
	decoder, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
		DecodeHook: mapstructure.ComposeDecodeHookFunc(
			mapstructure.StringToSliceHookFunc(","),
			mapstructure.StringToTimeDurationHookFunc(),
		),
		ErrorUnused: true,
		Metadata:    metadata,
		Result:      config,
	})
	if err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}
	if err := decoder.Decode(parsed); err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}

	// Store a reference to the path where this config was read from
	config.Path = path

	// Update the list of set keys
	if config.setKeys == nil {
		config.setKeys = make(map[string]struct{})
	}
	for _, key := range metadata.Keys {
		if _, ok := config.setKeys[key]; !ok {
			config.setKeys[key] = struct{}{}
		}
	}
	config.setKeys["path"] = struct{}{}

	d := DefaultConfig()
	d.Merge(config)
	config = d

	return config, errs.ErrorOrNil()
}
Exemplo n.º 17
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func TestParseConfig_correctValues(t *testing.T) {
	global, err := dep.ParseStoreKeyPrefix("config/global")
	if err != nil {
		t.Fatal(err)
	}

	redis, err := dep.ParseStoreKeyPrefix("config/redis")
	if err != nil {
		t.Fatal(err)
	}

	configFile := test.CreateTempfile([]byte(`
		consul = "nyc1.demo.consul.io"
		max_stale = "5s"
		token = "abcd1234"
		wait = "5s:10s"
		retry = "10s"
		log_level = "warn"

		prefixes = ["config/global", "config/redis"]

		auth {
			enabled = true
			username = "******"
			password = "******"
		}

		ssl {
			enabled = true
			verify = false
			cert = "c1.pem"
			ca_cert = "c2.pem"
		}

		syslog {
			enabled = true
			facility = "LOCAL5"
		}
  `), t)
	defer test.DeleteTempfile(configFile, t)

	config, err := ParseConfig(configFile.Name())
	if err != nil {
		t.Fatal(err)
	}

	expected := &Config{
		Path:     configFile.Name(),
		Consul:   "nyc1.demo.consul.io",
		MaxStale: time.Second * 5,
		Upcase:   false,
		Sanitize: false,
		Timeout:  5 * time.Second,
		Auth: &AuthConfig{
			Enabled:  true,
			Username: "******",
			Password: "******",
		},
		SSL: &SSLConfig{
			Enabled: true,
			Verify:  false,
			Cert:    "c1.pem",
			CaCert:  "c2.pem",
		},
		Syslog: &SyslogConfig{
			Enabled:  true,
			Facility: "LOCAL5",
		},
		Token: "abcd1234",
		Wait: &watch.Wait{
			Min: time.Second * 5,
			Max: time.Second * 10,
		},
		Retry:      10 * time.Second,
		LogLevel:   "warn",
		Prefixes:   []*dep.StoreKeyPrefix{global, redis},
		KillSignal: "SIGTERM",
		setKeys:    config.setKeys,
	}

	if !reflect.DeepEqual(config, expected) {
		t.Fatalf("expected \n%#v\n to be \n%#v\n", config, expected)
	}

	// if !reflect.DeepEqual(config, expected) {
	// 	t.Fatalf("expected \n%#v\n to be \n%#v\n", config, expected)
	// }
}
Exemplo n.º 18
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func TestRun_merges(t *testing.T) {
	globalPrefix, err := dep.ParseStoreKeyPrefix("config/global")
	if err != nil {
		t.Fatal(err)
	}

	redisPrefix, err := dep.ParseStoreKeyPrefix("config/redis")
	if err != nil {
		t.Fatal(err)
	}

	config := testConfig(`
		upcase = true
		prefixes = ["config/global", "config/redis"]
	`, t)

	runner, err := NewRunner(config, []string{"env"}, true)
	if err != nil {
		t.Fatal(err)
	}

	outStream, errStream := new(bytes.Buffer), new(bytes.Buffer)
	runner.outStream, runner.errStream = outStream, errStream

	globalData := []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "config/global",
			Key:   "address",
			Value: "1.2.3.4",
		},
		&dep.KeyPair{
			Path:  "config/global",
			Key:   "port",
			Value: "5598",
		},
	}
	runner.Receive(globalPrefix, globalData)

	redisData := []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "config/redis",
			Key:   "port",
			Value: "8000",
		},
	}
	runner.Receive(redisPrefix, redisData)

	exitCh, err := runner.Run()
	if err != nil {
		t.Fatal(err)
	}

	select {
	case err := <-runner.ErrCh:
		t.Fatal(err)
	case <-exitCh:
		expected := "ADDRESS=1.2.3.4"
		if !strings.Contains(outStream.String(), expected) {
			t.Fatalf("expected %q to include %q", outStream.String(), expected)
		}

		expected = "PORT=8000"
		if !strings.Contains(outStream.String(), expected) {
			t.Fatalf("expected %q to include %q", outStream.String(), expected)
		}
	}
}
Exemplo n.º 19
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// g reads the configuration file at the given path and returns a new
// Config struct with the data populated.
func ParseConfig(path string) (*Config, error) {
	var errs *multierror.Error

	// Read the contents of the file
	contents, err := ioutil.ReadFile(path)
	if err != nil {
		return nil, fmt.Errorf("error reading config at %q: %s", path, err)
	}

	// Parse the file (could be HCL or JSON)
	var shadow interface{}
	if err := hcl.Decode(&shadow, string(contents)); err != nil {
		return nil, fmt.Errorf("error decoding config at %q: %s", path, err)
	}

	// Convert to a map and flatten the keys we want to flatten
	parsed, ok := shadow.(map[string]interface{})
	if !ok {
		return nil, fmt.Errorf("error converting config at %q", path)
	}
	flattenKeys(parsed, []string{"auth", "ssl", "syslog"})

	// Create a new, empty config
	config := new(Config)

	// Use mapstructure to populate the basic config fields
	metadata := new(mapstructure.Metadata)
	decoder, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
		DecodeHook: mapstructure.ComposeDecodeHookFunc(
			watch.StringToWaitDurationHookFunc(),
			mapstructure.StringToSliceHookFunc(","),
			mapstructure.StringToTimeDurationHookFunc(),
		),
		ErrorUnused: true,
		Metadata:    metadata,
		Result:      config,
	})
	if err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}
	if err := decoder.Decode(parsed); err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}

	// Store a reference to the path where this config was read from
	config.Path = path

	// Parse the prefix sources
	for _, prefix := range config.Prefixes {
		parsed, err := dep.ParseStoreKeyPrefix(prefix.SourceRaw)
		if err != nil {
			errs = multierror.Append(errs, err)
			continue
		}
		prefix.Source = parsed

		// If no destination was given, default to the prefix
		if prefix.Destination == "" {
			prefix.Destination = parsed.Prefix
		}
	}

	// Update the list of set keys
	if config.setKeys == nil {
		config.setKeys = make(map[string]struct{})
	}
	for _, key := range metadata.Keys {
		if _, ok := config.setKeys[key]; !ok {
			config.setKeys[key] = struct{}{}
		}
	}
	config.setKeys["path"] = struct{}{}

	d := DefaultConfig()
	d.Merge(config)
	config = d

	return config, errs.ErrorOrNil()
}
Exemplo n.º 20
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func TestStart_runsCommandOnChange(t *testing.T) {
	prefix, err := dep.ParseStoreKeyPrefix("foo/bar")
	if err != nil {
		t.Fatal(err)
	}

	config := testConfig(`
		prefixes = ["foo/bar"]
	`, t)

	runner, err := NewRunner(config, []string{"sh", "-c", "echo $BAR"}, true)
	if err != nil {
		t.Fatal(err)
	}

	outStream, errStream := new(bytes.Buffer), new(bytes.Buffer)
	runner.outStream, runner.errStream = outStream, errStream

	go runner.Start()
	defer runner.Stop()

	// Kind of hacky, but wait for the runner to return an error, indicating we
	// are all setup.
	select {
	case <-runner.watcher.ErrCh:
	}

	pair := []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "foo/bar",
			Key:   "BAR",
			Value: "one",
		},
	}
	runner.watcher.DataCh <- &watch.View{Dependency: prefix, Data: pair}

	select {
	case err := <-runner.ErrCh:
		t.Fatal(err)
	case <-time.After(200 * time.Millisecond):
		expected := "one\n"
		if outStream.String() != expected {
			t.Fatalf("expected %q to be %q", outStream.String(), expected)
		}
	}

	outStream.Reset()
	errStream.Reset()

	pair = []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "foo/bar",
			Key:   "BAR",
			Value: "two",
		},
	}
	runner.watcher.DataCh <- &watch.View{Dependency: prefix, Data: pair}

	select {
	case err := <-runner.ErrCh:
		t.Fatal(err)
	case <-time.After(200 * time.Millisecond):
		expected := "two\n"
		if outStream.String() != expected {
			t.Fatalf("expected %q to be %q", outStream.String(), expected)
		}
	}
}
Exemplo n.º 21
0
func TestExecute_multipass(t *testing.T) {
	in := test.CreateTempfile([]byte(`
		{{ range ls "services" }}{{.Key}}:{{ range service .Key }}
			{{.Node}} {{.Address}}:{{.Port}}{{ end }}
		{{ end }}
	`), t)
	defer test.DeleteTempfile(in, t)

	tmpl, err := NewTemplate(in.Name())
	if err != nil {
		t.Fatal(err)
	}

	brain := NewBrain()

	used, missing, result, err := tmpl.Execute(brain)
	if err != nil {
		t.Fatal(err)
	}

	if num := len(missing); num != 1 {
		t.Errorf("expected 1 missing, got: %d", num)
	}

	if num := len(used); num != 1 {
		t.Errorf("expected 1 used, got: %d", num)
	}

	expected := bytes.TrimSpace([]byte(""))
	result = bytes.TrimSpace(result)
	if !bytes.Equal(result, expected) {
		t.Errorf("expected %q to be %q", result, expected)
	}

	// Receive data for the key prefix dependency
	d1, err := dep.ParseStoreKeyPrefix("services")
	brain.Remember(d1, []*dep.KeyPair{
		&dep.KeyPair{Key: "webapp", Value: "1"},
		&dep.KeyPair{Key: "database", Value: "1"},
	})

	used, missing, result, err = tmpl.Execute(brain)
	if err != nil {
		t.Fatal(err)
	}

	if num := len(missing); num != 2 {
		t.Errorf("expected 2 missing, got: %d", num)
	}

	if num := len(used); num != 3 {
		t.Errorf("expected 3 used, got: %d", num)
	}

	expected = bytes.TrimSpace([]byte(`
		webapp:
		database:
	`))
	result = bytes.TrimSpace(result)
	if !bytes.Equal(result, expected) {
		t.Errorf("expected \n%q\n to be \n%q\n", result, expected)
	}

	// Receive data for the services
	d2, err := dep.ParseHealthServices("webapp")
	brain.Remember(d2, []*dep.HealthService{
		&dep.HealthService{Node: "web01", Address: "1.2.3.4", Port: 1234},
	})

	d3, err := dep.ParseHealthServices("database")
	brain.Remember(d3, []*dep.HealthService{
		&dep.HealthService{Node: "db01", Address: "5.6.7.8", Port: 5678},
	})

	used, missing, result, err = tmpl.Execute(brain)
	if err != nil {
		t.Fatal(err)
	}

	if num := len(missing); num != 0 {
		t.Errorf("expected 0 missing, got: %d", num)
	}

	if num := len(used); num != 3 {
		t.Errorf("expected 3 used, got: %d", num)
	}

	expected = bytes.TrimSpace([]byte(`
		webapp:
			web01 1.2.3.4:1234
		database:
			db01 5.6.7.8:5678
	`))
	result = bytes.TrimSpace(result)
	if !bytes.Equal(result, expected) {
		t.Errorf("expected \n%q\n to be \n%q\n", result, expected)
	}
}
Exemplo n.º 22
0
func TestExecute_renders(t *testing.T) {
	// Stub out the time.
	now = func() time.Time { return time.Unix(0, 0).UTC() }

	in := test.CreateTempfile([]byte(`
		API Functions
		-------------
		datacenters:{{ range datacenters }}
			{{.}}{{ end }}
		file: {{ file "/path/to/file" }}
		key: {{ key "config/redis/maxconns" }}
		ls:{{ range ls "config/redis" }}
			{{.Key}}={{.Value}}{{ end }}
		node:{{ with node }}
			{{.Node.Node}}{{ range .Services}}
				{{.Service}}{{ end }}{{ end }}
		nodes:{{ range nodes }}
			{{.Node}}{{ end }}
		service:{{ range service "webapp" }}
			{{.Address}}{{ end }}
		service (any):{{ range service "webapp" "any" }}
			{{.Address}}{{ end }}
		service (tag.Contains):{{ range service "webapp" }}{{ if .Tags.Contains "production" }}
			{{.Node}}{{ end }}{{ end }}
		services:{{ range services }}
			{{.Name}}{{ end }}
		tree:{{ range tree "config/redis" }}
			{{.Key}}={{.Value}}{{ end }}
		vault: {{ with vault "secret/foo/bar" }}{{.Data.zip}}{{ end }}

		Helper Functions
		----------------
		byKey:{{ range $key, $pairs := tree "config/redis" | byKey }}
			{{$key}}:{{ range $pairs }}
				{{.Key}}={{.Value}}{{ end }}{{ end }}
		byTag (health service):{{ range $tag, $services := service "webapp" | byTag }}
			{{$tag}}:{{ range $services }}
				{{.Address}}{{ end }}{{ end }}
		byTag (catalog services):{{ range $tag, $services := services | byTag }}
			{{$tag}}:{{ range $services }}
				{{.Name}}{{ end }}{{ end }}
		contains:{{ range service "webapp" }}{{ if .Tags | contains "production" }}
			{{.Node}}{{ end }}{{ end }}
		env: {{ env "foo" }}
		explode:{{ range $k, $v := tree "config/redis" | explode }}
			{{$k}}{{$v}}{{ end }}
		in:{{ range service "webapp" }}{{ if in .Tags "production" }}
			{{.Node}}{{ end }}{{ end }}
		loop:{{ range loop 3 }}
			test{{ end }}
		loop(i):{{ range $i := loop 5 8 }}
			test{{$i}}{{ end }}
		join: {{ "a,b,c" | split "," | join ";" }}
		parseBool: {{"true" | parseBool}}
		parseFloat: {{"1.2" | parseFloat}}
		parseInt: {{"-1" | parseInt}}
		parseJSON (string):{{ range $key, $value := "{\"foo\": \"bar\"}" | parseJSON }}
			{{$key}}={{$value}}{{ end }}
		parseJSON (file):{{ range $key, $value := file "/path/to/json/file" | parseJSON }}
			{{$key}}={{$value}}{{ end }}
		parseJSON (env):{{ range $key, $value := env "json" | parseJSON }}
			{{$key}}={{$value}}{{ end }}
		parseUint: {{"1" | parseUint}}
		plugin: {{ file "/path/to/json/file" | plugin "echo" }}
		timestamp: {{ timestamp }}
		timestamp (formatted): {{ timestamp "2006-01-02" }}
		regexMatch: {{ file "/path/to/file"  | regexMatch ".*[cont][a-z]+" }}
		regexMatch: {{ file "/path/to/file"  | regexMatch "v[0-9]*" }}
		regexReplaceAll: {{ file "/path/to/file" | regexReplaceAll "\\w" "x" }}
		replaceAll: {{ file "/path/to/file" | replaceAll "some" "this" }}
		split:{{ range "a,b,c" | split "," }}
			{{.}}{{end}}
		toLower: {{ file "/path/to/file" | toLower }}
		toJSON: {{ tree "config/redis" | explode | toJSON }}
		toJSONPretty:
{{ tree "config/redis" | explode | toJSONPretty }}
		toTitle: {{ file "/path/to/file" | toTitle }}
		toUpper: {{ file "/path/to/file" | toUpper }}
		toYAML:
{{ tree "config/redis" | explode | toYAML }}

		Math Functions
		--------------
		add:{{ 2 | add 2 }}
		subtract:{{ 2 | subtract 2 }}
		multiply:{{ 2 | multiply 2 }}
		divide:{{ 2 | divide 2 }}
`), t)
	defer test.DeleteTempfile(in, t)

	tmpl, err := NewTemplate(in.Name())
	if err != nil {
		t.Fatal(err)
	}

	brain := NewBrain()

	var d dep.Dependency

	d, err = dep.ParseDatacenters()
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, []string{"dc1", "dc2"})

	d, err = dep.ParseFile("/path/to/file")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, "some content")

	d, err = dep.ParseStoreKey("config/redis/maxconns")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, "5")

	d, err = dep.ParseStoreKeyPrefix("config/redis")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, []*dep.KeyPair{
		&dep.KeyPair{Key: "", Value: ""},
		&dep.KeyPair{Key: "admin/port", Value: "1134"},
		&dep.KeyPair{Key: "maxconns", Value: "5"},
		&dep.KeyPair{Key: "minconns", Value: "2"},
	})

	d, err = dep.ParseCatalogNode()
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, &dep.NodeDetail{
		Node: &dep.Node{Node: "node1"},
		Services: dep.NodeServiceList([]*dep.NodeService{
			&dep.NodeService{
				Service: "service1",
			},
		}),
	})

	d, err = dep.ParseCatalogNodes("")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, []*dep.Node{
		&dep.Node{Node: "node1"},
		&dep.Node{Node: "node2"},
	})

	d, err = dep.ParseHealthServices("webapp")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, []*dep.HealthService{
		&dep.HealthService{
			Node:    "node1",
			Address: "1.2.3.4",
			Tags:    []string{"release"},
		},
		&dep.HealthService{
			Node:    "node2",
			Address: "5.6.7.8",
			Tags:    []string{"release", "production"},
		},
		&dep.HealthService{
			Node:    "node3",
			Address: "9.10.11.12",
			Tags:    []string{"production"},
		},
	})

	d, err = dep.ParseHealthServices("webapp", "any")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, []*dep.HealthService{
		&dep.HealthService{Node: "node1", Address: "1.2.3.4"},
		&dep.HealthService{Node: "node2", Address: "5.6.7.8"},
	})

	d, err = dep.ParseCatalogServices("")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, []*dep.CatalogService{
		&dep.CatalogService{
			Name: "service1",
			Tags: []string{"production"},
		},
		&dep.CatalogService{
			Name: "service2",
			Tags: []string{"release", "production"},
		},
	})

	d, err = dep.ParseVaultSecret("secret/foo/bar")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, &dep.Secret{
		LeaseID:       "abcd1234",
		LeaseDuration: 120,
		Renewable:     true,
		Data:          map[string]interface{}{"zip": "zap"},
	})

	if err := os.Setenv("foo", "bar"); err != nil {
		t.Fatal(err)
	}

	d, err = dep.ParseFile("/path/to/json/file")
	if err != nil {
		t.Fatal(err)
	}
	brain.Remember(d, `{"foo": "bar"}`)

	if err := os.Setenv("json", `{"foo": "bar"}`); err != nil {
		t.Fatal(err)
	}

	_, _, result, err := tmpl.Execute(brain)
	if err != nil {
		t.Fatal(err)
	}

	expected := []byte(`
		API Functions
		-------------
		datacenters:
			dc1
			dc2
		file: some content
		key: 5
		ls:
			maxconns=5
			minconns=2
		node:
			node1
				service1
		nodes:
			node1
			node2
		service:
			1.2.3.4
			5.6.7.8
			9.10.11.12
		service (any):
			1.2.3.4
			5.6.7.8
		service (tag.Contains):
			node2
			node3
		services:
			service1
			service2
		tree:
			admin/port=1134
			maxconns=5
			minconns=2
		vault: zap

		Helper Functions
		----------------
		byKey:
			admin:
				port=1134
		byTag (health service):
			production:
				5.6.7.8
				9.10.11.12
			release:
				1.2.3.4
				5.6.7.8
		byTag (catalog services):
			production:
				service1
				service2
			release:
				service2
		contains:
			node2
			node3
		env: bar
		explode:
			adminmap[port:1134]
			maxconns5
			minconns2
		in:
			node2
			node3
		loop:
			test
			test
			test
		loop(i):
			test5
			test6
			test7
		join: a;b;c
		parseBool: true
		parseFloat: 1.2
		parseInt: -1
		parseJSON (string):
			foo=bar
		parseJSON (file):
			foo=bar
		parseJSON (env):
			foo=bar
		parseUint: 1
		plugin: {"foo": "bar"}
		timestamp: 1970-01-01T00:00:00Z
		timestamp (formatted): 1970-01-01
		regexMatch: true
		regexMatch: false
		regexReplaceAll: xxxx xxxxxxx
		replaceAll: this content
		split:
			a
			b
			c
		toLower: some content
		toJSON: {"admin":{"port":"1134"},"maxconns":"5","minconns":"2"}
		toJSONPretty:
{
  "admin": {
    "port": "1134"
  },
  "maxconns": "5",
  "minconns": "2"
}
		toTitle: Some Content
		toUpper: SOME CONTENT
		toYAML:
admin:
  port: "1134"
maxconns: "5"
minconns: "2"

		Math Functions
		--------------
		add:4
		subtract:0
		multiply:4
		divide:1
`)

	if !bytes.Equal(result, expected) {
		t.Errorf("expected %s to be %s", result, expected)
	}
}
Exemplo n.º 23
0
// init creates the Runner's underlying data structures and returns an error if
// any problems occur.
func (r *Runner) init() error {
	// Ensure we have defaults
	config := DefaultConfig()
	config.Merge(r.config)
	r.config = config

	// Print the final config for debugging
	result, err := json.MarshalIndent(r.config, "", "  ")
	if err != nil {
		return err
	}
	log.Printf("[DEBUG] (runner) final config (tokens suppressed):\n\n%s\n\n",
		result)

	// Setup the kill signal
	signal, err := signals.Parse(r.config.KillSignal)
	if err != nil {
		return errors.Wrap(err, "runner")
	}
	r.killSignal = signal

	// Create the clientset
	clients, err := newClientSet(r.config)
	if err != nil {
		return fmt.Errorf("runner: %s", err)
	}

	// Create the watcher
	watcher, err := newWatcher(r.config, clients, r.once)
	if err != nil {
		return fmt.Errorf("runner: %s", err)
	}
	r.watcher = watcher

	r.data = make(map[string]interface{})
	r.configPrefixMap = make(map[string]*ConfigPrefix)

	r.inStream = os.Stdin
	r.outStream = os.Stdout
	r.errStream = os.Stderr

	r.ErrCh = make(chan error)
	r.DoneCh = make(chan struct{})
	r.ExitCh = make(chan int, 1)

	// Parse and add consul dependencies
	for _, p := range r.config.Prefixes {
		d, err := dep.ParseStoreKeyPrefix(p.Path)
		if err != nil {
			return err
		}
		r.dependencies = append(r.dependencies, d)
		r.configPrefixMap[d.HashCode()] = p
	}

	// Parse and add vault dependencies - it is important that this come after
	// consul, because consul should never be permitted to overwrite values from
	// vault; that would expose a security hole since access to consul is
	// typically less controlled than access to vault.
	for _, s := range r.config.Secrets {
		log.Printf("looking at vault %s", s.Path)
		d, err := dep.ParseVaultSecret(s.Path)
		if err != nil {
			return err
		}
		r.dependencies = append(r.dependencies, d)
		r.configPrefixMap[d.HashCode()] = s
	}

	return nil
}
Exemplo n.º 24
0
// Test that the config is parsed correctly
func TestParseConfig_correctValues(t *testing.T) {
	configFile := test.CreateTempfile([]byte(`
    consul = "nyc1.demo.consul.io"
    max_stale = "5s"
    token = "abcd1234"
    wait = "5s:10s"
    retry = "10s"
    log_level = "warn"

    status_path = "global/statuses/replicators"

    auth {
    	enabled = true
    	username = "******"
    	password = "******"
    }

    ssl {
    	enabled = true
    	verify = false
    }

    syslog {
    	enabled = true
    	facility = "LOCAL5"
    }

    prefix {
    	source = "global/config@nyc1"
    }

    prefix {
    	source = "redis/config@nyc1"
    	destination = "redis/backup"
    }
  `), t)
	defer test.DeleteTempfile(configFile, t)

	config, err := ParseConfig(configFile.Name())
	if err != nil {
		t.Fatal(err)
	}

	globalDep, err := dep.ParseStoreKeyPrefix("global/config@nyc1")
	if err != nil {
		t.Fatal(err)
	}
	global := &Prefix{
		Source:      globalDep,
		SourceRaw:   "global/config@nyc1",
		Destination: "global/config",
	}

	redisDep, err := dep.ParseStoreKeyPrefix("redis/config@nyc1")
	if err != nil {
		t.Fatal(err)
	}
	redis := &Prefix{
		Source:      redisDep,
		SourceRaw:   "redis/config@nyc1",
		Destination: "redis/backup",
	}

	expected := &Config{
		Path:        configFile.Name(),
		Consul:      "nyc1.demo.consul.io",
		Token:       "abcd1234",
		MaxStale:    time.Second * 5,
		MaxStaleRaw: "5s",
		Prefixes:    []*Prefix{global, redis},
		Auth: &Auth{
			Enabled:  true,
			Username: "******",
			Password: "******",
		},
		AuthRaw: []*Auth{
			&Auth{
				Enabled:  true,
				Username: "******",
				Password: "******",
			},
		},
		SSL: &SSL{
			Enabled: true,
			Verify:  false,
		},
		SSLRaw: []*SSL{
			&SSL{
				Enabled: true,
				Verify:  false,
			},
		},
		Syslog: &Syslog{
			Enabled:  true,
			Facility: "LOCAL5",
		},
		SyslogRaw: []*Syslog{
			&Syslog{
				Enabled:  true,
				Facility: "LOCAL5",
			},
		},
		Wait: &watch.Wait{
			Min: time.Second * 5,
			Max: time.Second * 10,
		},
		WaitRaw:   "5s:10s",
		Retry:     10 * time.Second,
		RetryRaw:  "10s",
		LogLevel:  "warn",
		StatusDir: "global/statuses/replicators",
	}

	if !reflect.DeepEqual(config, expected) {
		t.Fatalf("expected \n%#v\n\n, got \n\n%#v", expected.Prefixes[0], config.Prefixes[0])
	}
}
Exemplo n.º 25
0
func TestStart_runsCommandOnChange(t *testing.T) {
	prefix, err := dep.ParseStoreKeyPrefix("foo/bar")
	if err != nil {
		t.Fatal(err)
	}

	config := testConfig(`
		prefix {
			path = "foo/bar"
		}
	`, t)

	f := test.CreateTempfile(nil, t)
	defer os.Remove(f.Name())
	os.Remove(f.Name())

	readFile := func(path string, ch chan string) {
		for {
			contents, err := ioutil.ReadFile(path)
			if err != nil {
				if os.IsNotExist(err) {
					time.Sleep(50 * time.Millisecond)
					continue
				} else {
					t.Fatal(err)
					return
				}
			}

			ch <- string(contents)
			return
		}
	}

	runner, err := NewRunner(config, []string{"sh", "-c", "echo $BAR > " + f.Name()}, true)
	if err != nil {
		t.Fatal(err)
	}

	runner.outStream, runner.errStream = ioutil.Discard, ioutil.Discard

	go runner.Start()
	defer runner.Stop()

	// Kind of hacky, but wait for the runner to return an error, indicating we
	// are all setup.
	select {
	case <-runner.watcher.ErrCh:
	}

	pair := []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "foo/bar",
			Key:   "BAR",
			Value: "one",
		},
	}
	runner.watcher.DataCh <- &watch.View{Dependency: prefix, Data: pair}

	contentCh := make(chan string)
	go readFile(f.Name(), contentCh)

	select {
	case err := <-runner.ErrCh:
		t.Fatal(err)
	case content := <-contentCh:
		expected := "one\n"
		if content != expected {
			t.Fatalf("expected %q to be %q", content, expected)
		}
	case <-time.After(1 * time.Second):
		t.Fatal("expected file to be rendered by now")
	}

	// Delete the file - otherwise the next read could have a false-positive since
	// the file already exists
	os.Remove(f.Name())

	pair = []*dep.KeyPair{
		&dep.KeyPair{
			Path:  "foo/bar",
			Key:   "BAR",
			Value: "two",
		},
	}
	runner.watcher.DataCh <- &watch.View{Dependency: prefix, Data: pair}

	contentCh = make(chan string)
	go readFile(f.Name(), contentCh)

	select {
	case err := <-runner.ErrCh:
		t.Fatal(err)
	case content := <-contentCh:
		expected := "two\n"
		if content != expected {
			t.Fatalf("expected %q to be %q", content, expected)
		}
	case <-time.After(1 * time.Second):
		t.Fatal("expected file to be rendered by now")
	}
}
Exemplo n.º 26
0
// parseFlags is a helper function for parsing command line flags using Go's
// Flag library. This is extracted into a helper to keep the main function
// small, but it also makes writing tests for parsing command line arguments
// much easier and cleaner.
func (cli *CLI) parseFlags(args []string) (*Config, []string, bool, bool, error) {
	var once, version bool
	var config = DefaultConfig()

	// Parse the flags and options
	flags := flag.NewFlagSet(Name, flag.ContinueOnError)
	flags.SetOutput(cli.errStream)
	flags.Usage = func() { fmt.Fprintf(cli.errStream, usage, Name) }

	flags.Var((funcVar)(func(s string) error {
		config.Consul = s
		config.set("consul")
		return nil
	}), "consul", "")

	flags.Var((funcVar)(func(s string) error {
		config.Token = s
		config.set("token")
		return nil
	}), "token", "")

	flags.Var((funcVar)(func(s string) error {
		s = strings.TrimPrefix(s, "/")
		p, err := dep.ParseStoreKeyPrefix(s)
		if err != nil {
			return err
		}
		if config.Prefixes == nil {
			config.Prefixes = make([]*dep.StoreKeyPrefix, 0, 1)
		}
		config.Prefixes = append(config.Prefixes, p)
		return nil
	}), "prefix", "")

	flags.Var((funcVar)(func(s string) error {
		config.Auth.Enabled = true
		config.set("auth.enabled")
		if strings.Contains(s, ":") {
			split := strings.SplitN(s, ":", 2)
			config.Auth.Username = split[0]
			config.set("auth.username")
			config.Auth.Password = split[1]
			config.set("auth.password")
		} else {
			config.Auth.Username = s
			config.set("auth.username")
		}
		return nil
	}), "auth", "")

	flags.Var((funcBoolVar)(func(b bool) error {
		config.SSL.Enabled = b
		config.set("ssl")
		config.set("ssl.enabled")
		return nil
	}), "ssl", "")

	flags.Var((funcBoolVar)(func(b bool) error {
		config.SSL.Verify = b
		config.set("ssl.verify")
		return nil
	}), "ssl-verify", "")

	flags.Var((funcVar)(func(s string) error {
		config.SSL.Cert = s
		config.set("ssl.cert")
		return nil
	}), "ssl-cert", "")

	flags.Var((funcVar)(func(s string) error {
		config.SSL.CaCert = s
		config.set("ssl.ca_cert")
		return nil
	}), "ssl-ca-cert", "")

	flags.Var((funcDurationVar)(func(d time.Duration) error {
		config.MaxStale = d
		config.set("max_stale")
		return nil
	}), "max-stale", "")

	flags.Var((funcBoolVar)(func(b bool) error {
		config.Syslog.Enabled = b
		config.set("syslog.enabled")
		return nil
	}), "syslog", "")

	flags.Var((funcVar)(func(s string) error {
		config.Syslog.Facility = s
		config.set("syslog.facility")
		return nil
	}), "syslog-facility", "")

	flags.Var((funcVar)(func(s string) error {
		w, err := watch.ParseWait(s)
		if err != nil {
			return err
		}
		config.Wait.Min = w.Min
		config.Wait.Max = w.Max
		config.set("wait")
		return nil
	}), "wait", "")

	flags.Var((funcDurationVar)(func(d time.Duration) error {
		config.Retry = d
		config.set("retry")
		return nil
	}), "retry", "")

	flags.Var((funcBoolVar)(func(b bool) error {
		config.Sanitize = b
		config.set("sanitize")
		return nil
	}), "sanitize", "")

	flags.Var((funcBoolVar)(func(b bool) error {
		config.Upcase = b
		config.set("upcase")
		return nil
	}), "upcase", "")

	flags.Var((funcVar)(func(s string) error {
		config.Path = s
		config.set("path")
		return nil
	}), "config", "")

	flags.Var((funcVar)(func(s string) error {
		config.KillSignal = s
		config.set("kill_signal")
		return nil
	}), "kill-signal", "")

	flags.Var((funcVar)(func(s string) error {
		config.LogLevel = s
		config.set("log_level")
		return nil
	}), "log-level", "")

	flags.Var((funcBoolVar)(func(b bool) error {
		config.Pristine = b
		config.set("pristine")
		return nil
	}), "pristine", "")

	flags.BoolVar(&once, "once", false, "")
	flags.BoolVar(&version, "v", false, "")
	flags.BoolVar(&version, "version", false, "")

	// If there was a parser error, stop
	if err := flags.Parse(args); err != nil {
		return nil, nil, false, false, err
	}

	return config, flags.Args(), once, version, nil
}
Exemplo n.º 27
0
// ParseConfig reads the configuration file at the given path and returns a new
// Config struct with the data populated.
func ParseConfig(path string) (*Config, error) {
	var errs *multierror.Error

	// Read the contents of the file
	contents, err := ioutil.ReadFile(path)
	if err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}

	// Parse the file (could be HCL or JSON)
	var parsed interface{}
	if err := hcl.Decode(&parsed, string(contents)); err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}

	// Create a new, empty config
	config := &Config{}

	// Use mapstructure to populate the basic config fields
	decoder, err := mapstructure.NewDecoder(&mapstructure.DecoderConfig{
		ErrorUnused: true,
		Metadata:    nil,
		Result:      config,
	})
	if err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}

	if err := decoder.Decode(parsed); err != nil {
		errs = multierror.Append(errs, err)
		return nil, errs.ErrorOrNil()
	}

	// Store a reference to the path where this config was read from
	config.Path = path

	// Parse the prefix sources
	for _, prefix := range config.Prefixes {
		parsed, err := dep.ParseStoreKeyPrefix(prefix.SourceRaw)
		if err != nil {
			errs = multierror.Append(errs, err)
			continue
		}
		prefix.Source = parsed

		// If no destination was given, default to the prefix
		if prefix.Destination == "" {
			prefix.Destination = parsed.Prefix
		}
	}

	// Parse the MaxStale component
	if raw := config.MaxStaleRaw; raw != "" {
		stale, err := time.ParseDuration(raw)

		if err == nil {
			config.MaxStale = stale
		} else {
			errs = multierror.Append(errs, fmt.Errorf("max_stale invalid: %v", err))
		}
	}

	// Extract the last Auth block
	if len(config.AuthRaw) > 0 {
		config.Auth = config.AuthRaw[len(config.AuthRaw)-1]
	}

	// Extract the last SSL block
	if len(config.SSLRaw) > 0 {
		config.SSL = config.SSLRaw[len(config.SSLRaw)-1]
	}

	// Extract the last Syslog block
	if len(config.SyslogRaw) > 0 {
		config.Syslog = config.SyslogRaw[len(config.SyslogRaw)-1]
	}

	// Parse the Retry component
	if raw := config.RetryRaw; raw != "" {
		retry, err := time.ParseDuration(raw)

		if err == nil {
			config.Retry = retry
		} else {
			errs = multierror.Append(errs, fmt.Errorf("retry invalid: %v", err))
		}
	}

	// Parse the Wait component
	if raw := config.WaitRaw; raw != "" {
		wait, err := watch.ParseWait(raw)

		if err == nil {
			config.Wait = wait
		} else {
			errs = multierror.Append(errs, fmt.Errorf("wait invalid: %v", err))
		}
	}

	return config, errs.ErrorOrNil()
}