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datasource_digitalocean_droplet.go
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datasource_digitalocean_droplet.go
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package digitalocean
import (
"context"
"fmt"
"strconv"
"github.com/digitalocean/godo"
"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
"github.com/hashicorp/terraform-plugin-sdk/helper/validation"
)
func dataSourceDigitalOceanDroplet() *schema.Resource {
recordSchema := dropletSchema()
for _, f := range recordSchema {
f.Computed = true
}
recordSchema["id"].ExactlyOneOf = []string{"id", "tag", "name"}
recordSchema["id"].Optional = true
recordSchema["name"].ExactlyOneOf = []string{"id", "tag", "name"}
recordSchema["name"].Optional = true
recordSchema["tag"] = &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "unique tag of the Droplet",
ValidateFunc: validation.NoZeroValues,
ExactlyOneOf: []string{"id", "tag", "name"},
}
return &schema.Resource{
Read: dataSourceDigitalOceanDropletRead,
Schema: recordSchema,
}
}
func dataSourceDigitalOceanDropletRead(d *schema.ResourceData, meta interface{}) error {
client := meta.(*CombinedConfig).godoClient()
var foundDroplet godo.Droplet
if id, ok := d.GetOk("id"); ok {
droplet, _, err := client.Droplets.Get(context.Background(), id.(int))
if err != nil {
return err
}
foundDroplet = *droplet
} else if v, ok := d.GetOk("tag"); ok {
dropletList, err := getDigitalOceanDroplets(meta)
if err != nil {
return err
}
droplet, err := findDropletByTag(dropletList, v.(string))
if err != nil {
return err
}
foundDroplet = *droplet
} else if v, ok := d.GetOk("name"); ok {
dropletList, err := getDigitalOceanDroplets(meta)
if err != nil {
return err
}
droplet, err := findDropletByName(dropletList, v.(string))
if err != nil {
return err
}
foundDroplet = *droplet
} else {
return fmt.Errorf("Error: specify either a name, tag, or id to use to look up the droplet")
}
flattenedDroplet, err := flattenDigitalOceanDroplet(foundDroplet, meta)
if err != nil {
return err
}
if err := setResourceDataFromMap(d, flattenedDroplet); err != nil {
return err
}
d.SetId(strconv.Itoa(foundDroplet.ID))
return nil
}
func findDropletByName(droplets []interface{}, name string) (*godo.Droplet, error) {
results := make([]godo.Droplet, 0)
for _, v := range droplets {
droplet := v.(godo.Droplet)
if droplet.Name == name {
results = append(results, droplet)
}
}
if len(results) == 1 {
return &results[0], nil
}
if len(results) == 0 {
return nil, fmt.Errorf("no droplet found with name %s", name)
}
return nil, fmt.Errorf("too many droplets found with name %s (found %d, expected 1)", name, len(results))
}
func findDropletByTag(droplets []interface{}, tag string) (*godo.Droplet, error) {
results := make([]godo.Droplet, 0)
for _, d := range droplets {
droplet := d.(godo.Droplet)
for _, t := range droplet.Tags {
if t == tag {
results = append(results, droplet)
}
}
}
if len(results) == 1 {
return &results[0], nil
}
if len(results) == 0 {
return nil, fmt.Errorf("no droplet found with tag %s", tag)
}
return nil, fmt.Errorf("too many droplets found with tag %s (found %d, expected 1)", tag, len(results))
}