terraform/backend/remote-state/consul/backend.go

112 lines
2.7 KiB
Go

package consul
import (
"context"
"strings"
consulapi "github.com/hashicorp/consul/api"
"github.com/hashicorp/terraform/backend"
"github.com/hashicorp/terraform/backend/remote-state"
"github.com/hashicorp/terraform/helper/schema"
"github.com/hashicorp/terraform/state/remote"
)
// New creates a new backend for Consul remote state.
func New() backend.Backend {
return &remotestate.Backend{
ConfigureFunc: configure,
// Set the schema
Backend: &schema.Backend{
Schema: map[string]*schema.Schema{
"path": &schema.Schema{
Type: schema.TypeString,
Required: true,
Description: "Path to store state in Consul",
},
"access_token": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "Access token for a Consul ACL",
Default: "", // To prevent input
},
"address": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "Address to the Consul Cluster",
},
"scheme": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "Scheme to communicate to Consul with",
Default: "", // To prevent input
},
"datacenter": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "Datacenter to communicate with",
Default: "", // To prevent input
},
"http_auth": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "HTTP Auth in the format of 'username:password'",
Default: "", // To prevent input
},
},
},
}
}
func configure(ctx context.Context) (remote.Client, error) {
// Grab the resource data
data := schema.FromContextBackendConfig(ctx)
// Configure the client
config := consulapi.DefaultConfig()
if v, ok := data.GetOk("access_token"); ok && v.(string) != "" {
config.Token = v.(string)
}
if v, ok := data.GetOk("address"); ok && v.(string) != "" {
config.Address = v.(string)
}
if v, ok := data.GetOk("scheme"); ok && v.(string) != "" {
config.Scheme = v.(string)
}
if v, ok := data.GetOk("datacenter"); ok && v.(string) != "" {
config.Datacenter = v.(string)
}
if v, ok := data.GetOk("http_auth"); ok && v.(string) != "" {
auth := v.(string)
var username, password string
if strings.Contains(auth, ":") {
split := strings.SplitN(auth, ":", 2)
username = split[0]
password = split[1]
} else {
username = auth
}
config.HttpAuth = &consulapi.HttpBasicAuth{
Username: username,
Password: password,
}
}
client, err := consulapi.NewClient(config)
if err != nil {
return nil, err
}
return &RemoteClient{
Client: client,
Path: data.Get("path").(string),
}, nil
}