terraform/data_source_state.go

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package terraform
import (
"log"
"time"
"github.com/hashicorp/terraform/helper/schema"
"github.com/hashicorp/terraform/state/remote"
)
func dataSourceRemoteState() *schema.Resource {
return &schema.Resource{
Read: dataSourceRemoteStateRead,
Schema: map[string]*schema.Schema{
"backend": {
Type: schema.TypeString,
Required: true,
},
"config": {
Type: schema.TypeMap,
Optional: true,
},
"__has_dynamic_attributes": {
Type: schema.TypeString,
Optional: true,
},
},
}
}
func dataSourceRemoteStateRead(d *schema.ResourceData, meta interface{}) error {
backend := d.Get("backend").(string)
config := make(map[string]string)
for k, v := range d.Get("config").(map[string]interface{}) {
config[k] = v.(string)
}
// Create the client to access our remote state
log.Printf("[DEBUG] Initializing remote state client: %s", backend)
client, err := remote.NewClient(backend, config)
if err != nil {
return err
}
// Create the remote state itself and refresh it in order to load the state
log.Printf("[DEBUG] Loading remote state...")
state := &remote.State{Client: client}
if err := state.RefreshState(); err != nil {
return err
}
d.SetId(time.Now().UTC().String())
outputMap := make(map[string]interface{})
remoteState := state.State()
if remoteState.Empty() {
log.Println("[DEBUG] empty remote state")
return nil
}
for key, val := range remoteState.RootModule().Outputs {
outputMap[key] = val.Value
}
mappedOutputs := remoteStateFlatten(outputMap)
for key, val := range mappedOutputs {
d.UnsafeSetFieldRaw(key, val)
}
return nil
}