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resource_alicloud_db_connection.go
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resource_alicloud_db_connection.go
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package alicloud
import (
"fmt"
"strings"
"time"
"regexp"
"github.com/aliyun/alibaba-cloud-sdk-go/services/rds"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/terraform-providers/terraform-provider-alicloud/alicloud/connectivity"
)
const dbConnectionSuffixRegex = "\\.mysql\\.([a-zA-Z0-9\\-]+\\.){0,1}rds\\.aliyuncs\\.com"
const dbConnectionIdWithSuffixRegex = "^([a-zA-Z0-9\\-_]+:[a-zA-Z0-9\\-_]+)" + dbConnectionSuffixRegex + "$"
var dbConnectionIdWithSuffixRegexp = regexp.MustCompile(dbConnectionIdWithSuffixRegex)
func resourceAlicloudDBConnection() *schema.Resource {
return &schema.Resource{
Create: resourceAlicloudDBConnectionCreate,
Read: resourceAlicloudDBConnectionRead,
Update: resourceAlicloudDBConnectionUpdate,
Delete: resourceAlicloudDBConnectionDelete,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"instance_id": &schema.Schema{
Type: schema.TypeString,
ForceNew: true,
Required: true,
},
"connection_prefix": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
ValidateFunc: validateDBConnectionPrefix,
},
"port": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ValidateFunc: validateDBConnectionPort,
Default: "3306",
},
"connection_string": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"ip_address": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
},
}
}
func resourceAlicloudDBConnectionCreate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*connectivity.AliyunClient)
rdsService := RdsService{client}
instance_id := d.Get("instance_id").(string)
prefix, ok := d.GetOk("connection_prefix")
if !ok || prefix.(string) == "" {
prefix = fmt.Sprintf("%stf", instance_id)
}
if err := rdsService.AllocateDBPublicConnection(instance_id, prefix.(string), d.Get("port").(string)); err != nil {
return fmt.Errorf("AllocateInstancePublicConnection got an error: %#v", err)
}
d.SetId(fmt.Sprintf("%s%s%s", instance_id, COLON_SEPARATED, prefix.(string)))
return resourceAlicloudDBConnectionUpdate(d, meta)
}
func resourceAlicloudDBConnectionRead(d *schema.ResourceData, meta interface{}) error {
submatch := dbConnectionIdWithSuffixRegexp.FindStringSubmatch(d.Id())
if len(submatch) > 1 {
d.SetId(submatch[1])
}
parts := strings.Split(d.Id(), COLON_SEPARATED)
client := meta.(*connectivity.AliyunClient)
rdsService := RdsService{client}
conn, err := rdsService.DescribeDBInstanceNetInfoByIpType(parts[0], Public)
if err != nil {
if rdsService.NotFoundDBInstance(err) {
d.SetId("")
return nil
}
return err
}
d.Set("instance_id", parts[0])
d.Set("connection_prefix", parts[1])
d.Set("port", conn.Port)
d.Set("connection_string", conn.ConnectionString)
d.Set("ip_address", conn.IPAddress)
return nil
}
func resourceAlicloudDBConnectionUpdate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*connectivity.AliyunClient)
rdsService := RdsService{client}
d.Partial(true)
submatch := dbConnectionIdWithSuffixRegexp.FindStringSubmatch(d.Id())
if len(submatch) > 1 {
d.SetId(submatch[1])
}
parts := strings.Split(d.Id(), COLON_SEPARATED)
if d.HasChange("port") && !d.IsNewResource() {
request := rds.CreateModifyDBInstanceConnectionStringRequest()
request.DBInstanceId = parts[0]
connectionString, err := getCurrentConnectionString(parts[0], meta)
if err != nil {
return fmt.Errorf("getCurrentConnectionString got error: %#v", err)
}
request.CurrentConnectionString = connectionString
request.ConnectionStringPrefix = parts[1]
request.Port = d.Get("port").(string)
// wait instance running before modifying
if err := rdsService.WaitForDBInstance(request.DBInstanceId, Running, 500); err != nil {
return fmt.Errorf("WaitForInstance %s got error: %#v", Running, err)
}
if err := resource.Retry(3*time.Minute, func() *resource.RetryError {
_, err := client.WithRdsClient(func(rdsClient *rds.Client) (interface{}, error) {
return rdsClient.ModifyDBInstanceConnectionString(request)
})
if err != nil {
if IsExceptedErrors(err, OperationDeniedDBStatus) {
return resource.RetryableError(fmt.Errorf("Modify DBInstance Connection Port got an error: %#v.", err))
}
return resource.NonRetryableError(fmt.Errorf("Modify DBInstance Connection Port got an error: %#v.", err))
}
return nil
}); err != nil {
return err
}
// wait instance running after modifying
if err := rdsService.WaitForDBInstance(request.DBInstanceId, Running, 500); err != nil {
return fmt.Errorf("WaitForInstance %s got error: %#v", Running, err)
}
d.SetPartial("port")
}
d.Partial(false)
return resourceAlicloudDBConnectionRead(d, meta)
}
func resourceAlicloudDBConnectionDelete(d *schema.ResourceData, meta interface{}) error {
client := meta.(*connectivity.AliyunClient)
rdsService := RdsService{client}
submatch := dbConnectionIdWithSuffixRegexp.FindStringSubmatch(d.Id())
if len(submatch) > 1 {
d.SetId(submatch[1])
}
parts := strings.Split(d.Id(), COLON_SEPARATED)
return resource.Retry(3*time.Minute, func() *resource.RetryError {
connectionString, err := getCurrentConnectionString(parts[0], meta)
if err != nil {
return resource.NonRetryableError(fmt.Errorf("getCurrentConnectionString got error: %#v", err))
}
err = rdsService.ReleaseDBPublicConnection(parts[0], connectionString)
if err != nil {
if IsExceptedError(err, InvalidCurrentConnectionStringNotFound) || IsExceptedError(err, AtLeastOneNetTypeExists) {
return nil
}
return resource.RetryableError(fmt.Errorf("Release DB connection timeout and got an error: %#v.", err))
}
conn, err := rdsService.DescribeDBInstanceNetInfoByIpType(parts[0], Public)
if err != nil {
if rdsService.NotFoundDBInstance(err) || IsExceptedError(err, InvalidCurrentConnectionStringNotFound) {
return nil
}
return resource.NonRetryableError(fmt.Errorf("Release DB connection got an error: %#v.", err))
}
if conn == nil {
d.SetId("")
return nil
}
return resource.RetryableError(fmt.Errorf("Release DB connection timeout."))
})
}
func getCurrentConnectionString(dbInstanceId string, meta interface{}) (string, error) {
client := meta.(*connectivity.AliyunClient)
rdsService := RdsService{client}
resp, err := rdsService.DescribeDBInstanceNetInfoByIpType(dbInstanceId, Public)
if err != nil {
return "", err
}
return resp.ConnectionString, nil
}