// Parse parses the given string contents as a config
func Parse(s string) (*Config, error) {
var errs *multierror.Error
// Parse the file (could be HCL or JSON)
var shadow interface{}
if err := hcl.Decode(&shadow, s); err != nil {
return nil, fmt.Errorf("error decoding config: %s", 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")
}
flattenKeys(parsed, []string{
"auth",
"ssl",
"syslog",
"exec",
"vault",
"deduplicate",
})
// Deprecations
if vault, ok := parsed["vault"].(map[string]interface{}); ok {
if val, ok := vault["renew"]; ok {
log.Println(`[WARN] vault.renew has been renamed to vault.renew_token. ` +
`Update your configuration files and change "renew" to "renew_token".`)
vault["renew_token"] = val
delete(vault, "renew")
}
}
// 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(
StringToFileModeFunc(),
signals.StringToSignalFunc(),
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()
}
// Explicitly check for the nil signal and set the value back to nil
if config.ReloadSignal == signals.SIGNIL {
config.ReloadSignal = nil
}
if config.DumpSignal == signals.SIGNIL {
config.DumpSignal = nil
}
if config.KillSignal == signals.SIGNIL {
config.KillSignal = nil
}
if config.Exec != nil {
if config.Exec.ReloadSignal == signals.SIGNIL {
config.Exec.ReloadSignal = nil
}
if config.Exec.KillSignal == signals.SIGNIL {
config.Exec.KillSignal = nil
}
}
// Setup default values for templates
for _, t := range config.ConfigTemplates {
// Ensure there's a default value for the template's file permissions
if t.Perms == 0000 {
t.Perms = DefaultFilePerms
}
// Ensure we have a default command timeout
if t.CommandTimeout == 0 {
t.CommandTimeout = DefaultCommandTimeout
}
// Set up a default zero wait, which disables it for this
// template.
if t.Wait == nil {
t.Wait = &watch.Wait{}
}
}
// 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()
}
// 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", "vault", "deduplicate"})
// 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
// Ensure there's a default value for the template's file permissions
for _, t := range config.ConfigTemplates {
if t.Perms == 0000 {
t.Perms = defaultFilePerms
}
}
// 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()
}
// 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", "vault"})
// 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
// Handle deprecations
if len(config.PrefixesOld) > 0 {
log.Printf(`[WARN] Specifying the key "prefixes" in the configuration is `+
`no longer supported. Please specify each prefix individually using `+
`the key "prefix" (config at %s)`, path)
prefixes := make([]*ConfigPrefix, 0, len(config.PrefixesOld))
for _, prefix := range config.PrefixesOld {
prefixes = append(prefixes, &ConfigPrefix{
Path: prefix,
})
}
config.Prefixes = append(prefixes, config.Prefixes...)
config.PrefixesOld = nil
}
// 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()
}