// Load retrieves a specified configuration file and return a Config struct
func Load(file, directories string) *Config {
// Load the configuration file
conf, err := loadFile(file)
if err != nil {
logger.Fatal(err)
}
// Apply default configs to the configuration file
if err := mergo.Merge(conf, defaultConfig); err != nil {
logger.Fatal(err)
}
for i := range conf.Sensu {
if err := mergo.Merge(&conf.Sensu[i], defaultSensuConfig); err != nil {
logger.Fatal(err)
}
}
if directories != "" {
configDir := loadDirectories(directories)
// Overwrite the file config with the configs from the directories
if err := mergo.MergeWithOverwrite(conf, configDir); err != nil {
logger.Fatal(err)
}
}
conf.Sensu = initSensu(conf.Sensu)
// Support the dashboard attribute
if conf.Dashboard != nil {
conf.Uchiwa = *conf.Dashboard
// Apply the default config to the dashboard attribute
if err := mergo.Merge(conf, defaultConfig); err != nil {
logger.Fatal(err)
}
}
conf.Uchiwa = initUchiwa(conf.Uchiwa)
return conf
}
// loadDirectories loads a Config struct from one or multiple directories of configuration
func loadDirectories(path string) *Config {
conf := new(Config)
var configFiles []string
directories := strings.Split(strings.ToLower(path), ",")
for _, directory := range directories {
// Find all JSON files in the specified directories
files, err := filepath.Glob(filepath.Join(directory, "*.json"))
if err != nil {
logger.Warning(err)
continue
}
// Add the files found to a slice of configuration files to open
for _, file := range files {
configFiles = append(configFiles, file)
}
}
// Load every configuration files and merge them together bit by bit
for _, file := range configFiles {
// Load the config from the file
c, err := loadFile(file)
if err != nil {
logger.Warning(err)
continue
}
// Apply this configuration to the existing one
if err := mergo.MergeWithOverwrite(conf, c); err != nil {
logger.Warning(err)
continue
}
}
// Apply the default config to the Sensu APIs
for i := range conf.Sensu {
if err := mergo.Merge(&conf.Sensu[i], defaultSensuConfig); err != nil {
logger.Fatal(err)
}
}
return conf
}