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data_source_ibm_is_zones.go
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data_source_ibm_is_zones.go
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// Copyright IBM Corp. 2017, 2021 All Rights Reserved.
// Licensed under the Mozilla Public License v2.0
package vpc
import (
"time"
"github.com/IBM/vpc-go-sdk/vpcv1"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
)
const (
isZoneNames = "zones"
)
func DataSourceIBMISZones() *schema.Resource {
return &schema.Resource{
Read: dataSourceIBMISZonesRead,
Schema: map[string]*schema.Schema{
isZoneRegion: {
Type: schema.TypeString,
Required: true,
},
isZoneStatus: {
Type: schema.TypeString,
Optional: true,
},
isZoneNames: {
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{Type: schema.TypeString},
},
},
}
}
func dataSourceIBMISZonesRead(d *schema.ResourceData, meta interface{}) error {
regionName := d.Get(isZoneRegion).(string)
return zonesList(d, meta, regionName)
}
func zonesList(d *schema.ResourceData, meta interface{}, regionName string) error {
sess, err := vpcClient(meta)
if err != nil {
return err
}
listRegionZonesOptions := &vpcv1.ListRegionZonesOptions{
RegionName: ®ionName,
}
availableZones, _, err := sess.ListRegionZones(listRegionZonesOptions)
if err != nil {
return err
}
names := make([]string, 0)
status := d.Get(isZoneStatus).(string)
for _, zone := range availableZones.Zones {
if status == "" || *zone.Status == status {
names = append(names, *zone.Name)
}
}
d.SetId(dataSourceIBMISZonesId(d))
d.Set(isZoneNames, names)
return nil
}
// dataSourceIBMISZonesId returns a reasonable ID for a zone list.
func dataSourceIBMISZonesId(d *schema.ResourceData) string {
// Our zone list is not guaranteed to be stable because the content
// of the list can vary between two calls if any of the following
// events occur between calls:
// - a zone is added to our region
// - a zone is dropped from our region
// - we are using the status filter and the status of one or more
// zones changes between calls.
//
// For simplicity we are using a timestamp for the required terraform id.
// If we find through usage that this choice is too ephemeral for our users
// then we can change this function to use a more stable id, perhaps
// composed from a hash of the list contents. But, for now, a timestamp
// is good enough.
return time.Now().UTC().String()
}