440 lines
14 KiB
Go
440 lines
14 KiB
Go
package aws
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import (
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"fmt"
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"log"
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"regexp"
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"strings"
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"time"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/service/elasticache"
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"github.com/hashicorp/terraform/helper/resource"
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"github.com/hashicorp/terraform/helper/schema"
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)
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func resourceAwsElasticacheReplicationGroup() *schema.Resource {
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resourceSchema := resourceAwsElastiCacheCommonSchema()
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resourceSchema["replication_group_id"] = &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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ForceNew: true,
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ValidateFunc: validateAwsElastiCacheReplicationGroupId,
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}
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resourceSchema["automatic_failover_enabled"] = &schema.Schema{
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Type: schema.TypeBool,
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Optional: true,
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Default: false,
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}
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resourceSchema["replication_group_description"] = &schema.Schema{
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Type: schema.TypeString,
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Required: true,
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}
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resourceSchema["number_cache_clusters"] = &schema.Schema{
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Type: schema.TypeInt,
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Required: true,
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ForceNew: true,
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}
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resourceSchema["primary_endpoint_address"] = &schema.Schema{
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Type: schema.TypeString,
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Computed: true,
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}
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resourceSchema["engine"].Required = false
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resourceSchema["engine"].Optional = true
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resourceSchema["engine"].Default = "redis"
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resourceSchema["engine"].ValidateFunc = validateAwsElastiCacheReplicationGroupEngine
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return &schema.Resource{
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Create: resourceAwsElasticacheReplicationGroupCreate,
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Read: resourceAwsElasticacheReplicationGroupRead,
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Update: resourceAwsElasticacheReplicationGroupUpdate,
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Delete: resourceAwsElasticacheReplicationGroupDelete,
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Schema: resourceSchema,
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}
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}
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func resourceAwsElasticacheReplicationGroupCreate(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).elasticacheconn
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tags := tagsFromMapEC(d.Get("tags").(map[string]interface{}))
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params := &elasticache.CreateReplicationGroupInput{
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ReplicationGroupId: aws.String(d.Get("replication_group_id").(string)),
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ReplicationGroupDescription: aws.String(d.Get("replication_group_description").(string)),
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AutomaticFailoverEnabled: aws.Bool(d.Get("automatic_failover_enabled").(bool)),
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CacheNodeType: aws.String(d.Get("node_type").(string)),
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Engine: aws.String(d.Get("engine").(string)),
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Port: aws.Int64(int64(d.Get("port").(int))),
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NumCacheClusters: aws.Int64(int64(d.Get("number_cache_clusters").(int))),
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Tags: tags,
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}
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if v, ok := d.GetOk("engine_version"); ok {
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params.EngineVersion = aws.String(v.(string))
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}
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preferred_azs := d.Get("availability_zones").(*schema.Set).List()
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if len(preferred_azs) > 0 {
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azs := expandStringList(preferred_azs)
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params.PreferredCacheClusterAZs = azs
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}
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if v, ok := d.GetOk("parameter_group_name"); ok {
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params.CacheParameterGroupName = aws.String(v.(string))
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}
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if v, ok := d.GetOk("subnet_group_name"); ok {
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params.CacheSubnetGroupName = aws.String(v.(string))
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}
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security_group_names := d.Get("security_group_names").(*schema.Set).List()
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if len(security_group_names) > 0 {
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params.CacheSecurityGroupNames = expandStringList(security_group_names)
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}
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security_group_ids := d.Get("security_group_ids").(*schema.Set).List()
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if len(security_group_ids) > 0 {
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params.SecurityGroupIds = expandStringList(security_group_ids)
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}
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snaps := d.Get("snapshot_arns").(*schema.Set).List()
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if len(snaps) > 0 {
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params.SnapshotArns = expandStringList(snaps)
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}
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if v, ok := d.GetOk("maintenance_window"); ok {
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params.PreferredMaintenanceWindow = aws.String(v.(string))
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}
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if v, ok := d.GetOk("notification_topic_arn"); ok {
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params.NotificationTopicArn = aws.String(v.(string))
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}
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if v, ok := d.GetOk("snapshot_retention_limit"); ok {
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params.SnapshotRetentionLimit = aws.Int64(int64(v.(int)))
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}
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if v, ok := d.GetOk("snapshot_window"); ok {
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params.SnapshotWindow = aws.String(v.(string))
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}
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if v, ok := d.GetOk("snapshot_name"); ok {
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params.SnapshotName = aws.String(v.(string))
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}
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resp, err := conn.CreateReplicationGroup(params)
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if err != nil {
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return fmt.Errorf("Error creating Elasticache Replication Group: %s", err)
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}
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d.SetId(*resp.ReplicationGroup.ReplicationGroupId)
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pending := []string{"creating", "modifying", "restoring"}
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stateConf := &resource.StateChangeConf{
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Pending: pending,
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Target: []string{"available"},
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Refresh: cacheReplicationGroupStateRefreshFunc(conn, d.Id(), "available", pending),
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Timeout: 40 * time.Minute,
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MinTimeout: 10 * time.Second,
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Delay: 30 * time.Second,
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}
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log.Printf("[DEBUG] Waiting for state to become available: %v", d.Id())
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_, sterr := stateConf.WaitForState()
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if sterr != nil {
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return fmt.Errorf("Error waiting for elasticache replication group (%s) to be created: %s", d.Id(), sterr)
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}
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return resourceAwsElasticacheReplicationGroupRead(d, meta)
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}
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func resourceAwsElasticacheReplicationGroupRead(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).elasticacheconn
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req := &elasticache.DescribeReplicationGroupsInput{
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ReplicationGroupId: aws.String(d.Id()),
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}
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res, err := conn.DescribeReplicationGroups(req)
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if err != nil {
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if eccErr, ok := err.(awserr.Error); ok && eccErr.Code() == "ReplicationGroupNotFoundFault" {
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log.Printf("[WARN] Elasticache Replication Group (%s) not found", d.Id())
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d.SetId("")
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return nil
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}
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return err
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}
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var rgp *elasticache.ReplicationGroup
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for _, r := range res.ReplicationGroups {
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if *r.ReplicationGroupId == d.Id() {
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rgp = r
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}
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}
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if rgp == nil {
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log.Printf("[WARN] Replication Group (%s) not found", d.Id())
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d.SetId("")
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return nil
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}
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if *rgp.Status == "deleting" {
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log.Printf("[WARN] The Replication Group %q is currently in the `deleting` state", d.Id())
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d.SetId("")
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return nil
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}
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d.Set("automatic_failover_enabled", rgp.AutomaticFailover)
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d.Set("replication_group_description", rgp.Description)
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d.Set("number_cache_clusters", len(rgp.MemberClusters))
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d.Set("replication_group_id", rgp.ReplicationGroupId)
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if rgp.NodeGroups != nil {
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cacheCluster := *rgp.NodeGroups[0].NodeGroupMembers[0]
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res, err := conn.DescribeCacheClusters(&elasticache.DescribeCacheClustersInput{
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CacheClusterId: cacheCluster.CacheClusterId,
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ShowCacheNodeInfo: aws.Bool(true),
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})
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if err != nil {
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return err
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}
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if len(res.CacheClusters) == 0 {
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return nil
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}
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c := res.CacheClusters[0]
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d.Set("node_type", c.CacheNodeType)
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d.Set("engine", c.Engine)
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d.Set("engine_version", c.EngineVersion)
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d.Set("subnet_group_name", c.CacheSubnetGroupName)
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d.Set("security_group_names", c.CacheSecurityGroups)
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d.Set("security_group_ids", c.SecurityGroups)
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d.Set("parameter_group_name", c.CacheParameterGroup)
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d.Set("maintenance_window", c.PreferredMaintenanceWindow)
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d.Set("snapshot_window", c.SnapshotWindow)
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d.Set("snapshot_retention_limit", c.SnapshotRetentionLimit)
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d.Set("primary_endpoint_address", rgp.NodeGroups[0].PrimaryEndpoint.Address)
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}
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return nil
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}
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func resourceAwsElasticacheReplicationGroupUpdate(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).elasticacheconn
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requestUpdate := false
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params := &elasticache.ModifyReplicationGroupInput{
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ApplyImmediately: aws.Bool(d.Get("apply_immediately").(bool)),
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ReplicationGroupId: aws.String(d.Id()),
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}
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if d.HasChange("replication_group_description") {
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params.ReplicationGroupDescription = aws.String(d.Get("replication_group_description").(string))
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requestUpdate = true
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}
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if d.HasChange("automatic_failover_enabled") {
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params.AutomaticFailoverEnabled = aws.Bool(d.Get("automatic_failover_enabled").(bool))
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requestUpdate = true
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}
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if d.HasChange("security_group_ids") {
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if attr := d.Get("security_group_ids").(*schema.Set); attr.Len() > 0 {
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params.SecurityGroupIds = expandStringList(attr.List())
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requestUpdate = true
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}
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}
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if d.HasChange("security_group_names") {
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if attr := d.Get("security_group_names").(*schema.Set); attr.Len() > 0 {
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params.CacheSecurityGroupNames = expandStringList(attr.List())
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requestUpdate = true
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}
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}
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if d.HasChange("preferred_maintenance_window") {
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params.PreferredMaintenanceWindow = aws.String(d.Get("preferred_maintenance_window").(string))
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requestUpdate = true
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}
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if d.HasChange("notification_topic_arn") {
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params.NotificationTopicArn = aws.String(d.Get("notification_topic_arn").(string))
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requestUpdate = true
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}
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if d.HasChange("parameter_group_name") {
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params.CacheParameterGroupName = aws.String(d.Get("parameter_group_name").(string))
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requestUpdate = true
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}
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if d.HasChange("engine_version") {
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params.EngineVersion = aws.String(d.Get("engine_version").(string))
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requestUpdate = true
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}
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if d.HasChange("snapshot_retention_limit") {
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params.SnapshotRetentionLimit = aws.Int64(int64(d.Get("snapshot_retention_limit").(int)))
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requestUpdate = true
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}
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if d.HasChange("snapshot_window") {
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params.SnapshotWindow = aws.String(d.Get("snapshot_window").(string))
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requestUpdate = true
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}
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if d.HasChange("node_type") {
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params.CacheNodeType = aws.String(d.Get("node_type").(string))
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requestUpdate = true
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}
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if requestUpdate {
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_, err := conn.ModifyReplicationGroup(params)
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if err != nil {
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return fmt.Errorf("Error updating Elasticache replication group: %s", err)
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}
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pending := []string{"creating", "modifying", "snapshotting"}
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stateConf := &resource.StateChangeConf{
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Pending: pending,
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Target: []string{"available"},
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Refresh: cacheReplicationGroupStateRefreshFunc(conn, d.Id(), "available", pending),
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Timeout: 40 * time.Minute,
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MinTimeout: 10 * time.Second,
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Delay: 30 * time.Second,
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}
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log.Printf("[DEBUG] Waiting for state to become available: %v", d.Id())
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_, sterr := stateConf.WaitForState()
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if sterr != nil {
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return fmt.Errorf("Error waiting for elasticache replication group (%s) to be created: %s", d.Id(), sterr)
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}
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}
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return resourceAwsElasticacheReplicationGroupRead(d, meta)
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}
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func resourceAwsElasticacheReplicationGroupDelete(d *schema.ResourceData, meta interface{}) error {
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conn := meta.(*AWSClient).elasticacheconn
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req := &elasticache.DeleteReplicationGroupInput{
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ReplicationGroupId: aws.String(d.Id()),
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}
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_, err := conn.DeleteReplicationGroup(req)
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if err != nil {
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if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "ReplicationGroupNotFoundFault" {
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d.SetId("")
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return nil
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}
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return fmt.Errorf("Error deleting Elasticache replication group: %s", err)
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}
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log.Printf("[DEBUG] Waiting for deletion: %v", d.Id())
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stateConf := &resource.StateChangeConf{
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Pending: []string{"creating", "available", "deleting"},
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Target: []string{},
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Refresh: cacheReplicationGroupStateRefreshFunc(conn, d.Id(), "", []string{}),
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Timeout: 40 * time.Minute,
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MinTimeout: 10 * time.Second,
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Delay: 30 * time.Second,
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}
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_, sterr := stateConf.WaitForState()
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if sterr != nil {
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return fmt.Errorf("Error waiting for replication group (%s) to delete: %s", d.Id(), sterr)
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}
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return nil
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}
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func cacheReplicationGroupStateRefreshFunc(conn *elasticache.ElastiCache, replicationGroupId, givenState string, pending []string) resource.StateRefreshFunc {
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return func() (interface{}, string, error) {
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resp, err := conn.DescribeReplicationGroups(&elasticache.DescribeReplicationGroupsInput{
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ReplicationGroupId: aws.String(replicationGroupId),
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})
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if err != nil {
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if eccErr, ok := err.(awserr.Error); ok && eccErr.Code() == "ReplicationGroupNotFoundFault" {
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log.Printf("[DEBUG] Replication Group Not Found")
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return nil, "", nil
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}
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log.Printf("[ERROR] cacheClusterReplicationGroupStateRefreshFunc: %s", err)
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return nil, "", err
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}
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if len(resp.ReplicationGroups) == 0 {
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return nil, "", fmt.Errorf("[WARN] Error: no Cache Replication Groups found for id (%s)", replicationGroupId)
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}
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var rg *elasticache.ReplicationGroup
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for _, replicationGroup := range resp.ReplicationGroups {
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if *replicationGroup.ReplicationGroupId == replicationGroupId {
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log.Printf("[DEBUG] Found matching ElastiCache Replication Group: %s", *replicationGroup.ReplicationGroupId)
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rg = replicationGroup
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}
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}
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if rg == nil {
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return nil, "", fmt.Errorf("[WARN] Error: no matching ElastiCache Replication Group for id (%s)", replicationGroupId)
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}
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log.Printf("[DEBUG] ElastiCache Replication Group (%s) status: %v", replicationGroupId, *rg.Status)
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// return the current state if it's in the pending array
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for _, p := range pending {
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log.Printf("[DEBUG] ElastiCache: checking pending state (%s) for Replication Group (%s), Replication Group status: %s", pending, replicationGroupId, *rg.Status)
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s := *rg.Status
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if p == s {
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log.Printf("[DEBUG] Return with status: %v", *rg.Status)
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return s, p, nil
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}
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}
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return rg, *rg.Status, nil
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}
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}
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func validateAwsElastiCacheReplicationGroupEngine(v interface{}, k string) (ws []string, errors []error) {
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if strings.ToLower(v.(string)) != "redis" {
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errors = append(errors, fmt.Errorf("The only acceptable Engine type when using Replication Groups is Redis"))
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}
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return
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}
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func validateAwsElastiCacheReplicationGroupId(v interface{}, k string) (ws []string, errors []error) {
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value := v.(string)
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if (len(value) < 1) || (len(value) > 16) {
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errors = append(errors, fmt.Errorf(
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"%q must contain from 1 to 16 alphanumeric characters or hyphens", k))
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}
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if !regexp.MustCompile(`^[0-9a-zA-Z-]+$`).MatchString(value) {
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errors = append(errors, fmt.Errorf(
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"only alphanumeric characters and hyphens allowed in %q", k))
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}
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if !regexp.MustCompile(`^[a-z]`).MatchString(value) {
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errors = append(errors, fmt.Errorf(
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"first character of %q must be a letter", k))
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}
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if regexp.MustCompile(`--`).MatchString(value) {
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errors = append(errors, fmt.Errorf(
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"%q cannot contain two consecutive hyphens", k))
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}
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if regexp.MustCompile(`-$`).MatchString(value) {
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errors = append(errors, fmt.Errorf(
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"%q cannot end with a hyphen", k))
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}
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return
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}
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