// NewConsulConfig creates a new service discovery backend for Consul
func NewConsulConfig(config interface{}) (*Consul, error) {
var consulConfig *consul.Config
var err error
switch t := config.(type) {
case string:
consulConfig, err = configFromURI(t)
case map[string]interface{}:
consulConfig, err = configFromMap(t)
default:
return nil, fmt.Errorf("Unexpected Consul config structure. Expected a string or map")
}
if err != nil {
return nil, err
}
if token := os.Getenv("CONSUL_HTTP_TOKEN"); token != "" {
consulConfig.Token = token
}
client, err := consul.NewClient(consulConfig)
if err != nil {
return nil, err
}
return &Consul{*client}, nil
}
// New returns an initialized consul client
func (cc *Config) New() (*Client, error) {
var c *api.Config // upstream client configuration
var client *Client // client wrapper
var err error // general error holder
// init upstream config
c = api.DefaultConfig()
// overwrite address if needed
if cc.Address != "" {
c.Address = cc.Address
}
// overwrite scheme if needed
if cc.Scheme != "" {
c.Scheme = cc.Scheme
}
// overwrite dc if needed
if cc.Datacenter != "" {
c.Datacenter = cc.Datacenter
}
// overwrite token if needed
if cc.Token != "" {
c.Token = cc.Token
}
// configure if any TLS specific options were passed
if cc.TLS.CAFile != "" || cc.TLS.CertFile != "" || cc.TLS.KeyFile != "" || cc.TLS.InsecureSkipVerify {
var tlsConfig *tls.Config // client TLS config
// attempt to build tls config from passed options
if tlsConfig, err = api.SetupTLSConfig(cc.TLS); err != nil {
return nil, err
}
// build a new http client and transport
httpClient := cleanhttp.DefaultClient()
httpTransport := cleanhttp.DefaultTransport()
httpTransport.TLSClientConfig = tlsConfig
httpClient.Transport = httpTransport
// set client
c.HttpClient = httpClient
}
// init client wrapper
client = new(Client)
client.Client, err = api.NewClient(c)
// return client and error
return client, err
}