forked from hashicorp/terraform-provider-aws
/
data_source_aws_ip_ranges.go
181 lines (140 loc) · 3.9 KB
/
data_source_aws_ip_ranges.go
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package aws
import (
"encoding/json"
"fmt"
"io/ioutil"
"log"
"sort"
"strconv"
"strings"
"github.com/hashicorp/go-cleanhttp"
"github.com/hashicorp/terraform/helper/schema"
)
type dataSourceAwsIPRangesResult struct {
CreateDate string
Prefixes []dataSourceAwsIPRangesPrefix
Ipv6Prefixes []dataSourceAwsIPRangesIpv6Prefix `json:"ipv6_prefixes"`
SyncToken string
}
type dataSourceAwsIPRangesPrefix struct {
IpPrefix string `json:"ip_prefix"`
Region string
Service string
}
type dataSourceAwsIPRangesIpv6Prefix struct {
Ipv6Prefix string `json:"ipv6_prefix"`
Region string
Service string
}
func dataSourceAwsIPRanges() *schema.Resource {
return &schema.Resource{
Read: dataSourceAwsIPRangesRead,
Schema: map[string]*schema.Schema{
"cidr_blocks": {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"create_date": {
Type: schema.TypeString,
Computed: true,
},
"ipv6_cidr_blocks": {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"regions": {
Type: schema.TypeSet,
Elem: &schema.Schema{Type: schema.TypeString},
Optional: true,
},
"services": {
Type: schema.TypeSet,
Required: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
"sync_token": {
Type: schema.TypeInt,
Computed: true,
},
"url": {
Type: schema.TypeString,
Optional: true,
Default: "https://ip-ranges.amazonaws.com/ip-ranges.json",
},
},
}
}
func dataSourceAwsIPRangesRead(d *schema.ResourceData, meta interface{}) error {
conn := cleanhttp.DefaultClient()
url := d.Get("url").(string)
log.Printf("[DEBUG] Reading IP ranges from %s", url)
res, err := conn.Get(url)
if err != nil {
return fmt.Errorf("Error listing IP ranges from (%s): %s", url, err)
}
defer res.Body.Close()
data, err := ioutil.ReadAll(res.Body)
if err != nil {
return fmt.Errorf("Error reading response body from (%s): %s", url, err)
}
result := new(dataSourceAwsIPRangesResult)
if err := json.Unmarshal(data, result); err != nil {
return fmt.Errorf("Error parsing result from (%s): %s", url, err)
}
if err := d.Set("create_date", result.CreateDate); err != nil {
return fmt.Errorf("Error setting create date: %s", err)
}
syncToken, err := strconv.Atoi(result.SyncToken)
if err != nil {
return fmt.Errorf("Error while converting sync token: %s", err)
}
d.SetId(result.SyncToken)
if err := d.Set("sync_token", syncToken); err != nil {
return fmt.Errorf("Error setting sync token: %s", err)
}
get := func(key string) *schema.Set {
set := d.Get(key).(*schema.Set)
for _, e := range set.List() {
s := e.(string)
set.Remove(s)
set.Add(strings.ToLower(s))
}
return set
}
var (
regions = get("regions")
services = get("services")
noRegionFilter = regions.Len() == 0
ipPrefixes []string
ipv6Prefixes []string
)
matchFilter := func(region, service string) bool {
matchRegion := noRegionFilter || regions.Contains(strings.ToLower(region))
matchService := services.Contains(strings.ToLower(service))
return matchRegion && matchService
}
for _, e := range result.Prefixes {
if matchFilter(e.Region, e.Service) {
ipPrefixes = append(ipPrefixes, e.IpPrefix)
}
}
for _, e := range result.Ipv6Prefixes {
if matchFilter(e.Region, e.Service) {
ipv6Prefixes = append(ipv6Prefixes, e.Ipv6Prefix)
}
}
if len(ipPrefixes) == 0 && len(ipv6Prefixes) == 0 {
return fmt.Errorf("No IP ranges result from filters from (%s)", url)
}
sort.Strings(ipPrefixes)
if err := d.Set("cidr_blocks", ipPrefixes); err != nil {
return fmt.Errorf("Error setting cidr_blocks: %s", err)
}
sort.Strings(ipv6Prefixes)
if err := d.Set("ipv6_cidr_blocks", ipv6Prefixes); err != nil {
return fmt.Errorf("Error setting ipv6_cidr_blocks: %s", err)
}
return nil
}