fix: add missing default null value for connection_pool_config

Signed-off-by: Quoc Trung HOANG <quoc-trung.hoang@webedia-group.com>

Author: ichbinfrog

modules/mysql/README.md

@@ -50,7 +50,7 @@ module "mysql-db" {
 | additional\_users | A list of users to be created in your cluster. A random password would be set for the user if the `random_password` variable is set. | <pre>list(object({<br>    name            = string<br>    password        = string<br>    random_password = bool<br>    type            = string<br>    host            = string<br>  }))</pre> | `[]` | no |
 | availability\_type | The availability type for the master instance. Can be either `REGIONAL` or `null`. | `string` | `"REGIONAL"` | no |
 | backup\_configuration | The backup\_configuration settings subblock for the database settings | <pre>object({<br>    binary_log_enabled             = optional(bool, false)<br>    enabled                        = optional(bool, false)<br>    start_time                     = optional(string)<br>    location                       = optional(string)<br>    transaction_log_retention_days = optional(string)<br>    retained_backups               = optional(number)<br>    retention_unit                 = optional(string)<br>  })</pre> | `{}` | no |
-| connection\_pool\_config | Manager connection pooling configuration | <pre>object({<br>    enabled = optional(bool, false)<br>    flags = optional(list(object({<br>      name  = string<br>      value = string<br>    })), [])<br>  })</pre> | n/a | yes |
+| connection\_pool\_config | Manager connection pooling configuration | <pre>object({<br>    enabled = optional(bool, false)<br>    flags = optional(list(object({<br>      name  = string<br>      value = string<br>    })), [])<br>  })</pre> | `null` | no |
 | connector\_enforcement | Enforce that clients use the connector library | `bool` | `false` | no |
 | create\_timeout | The optional timout that is applied to limit long database creates. | `string` | `"30m"` | no |
 | data\_cache\_enabled | Whether data cache is enabled for the instance. Defaults to false. Feature is only available for ENTERPRISE\_PLUS tier and supported database\_versions | `bool` | `false` | no |

modules/mysql/variables.tf

@@ -516,4 +516,5 @@ variable "connection_pool_config" {
       value = string
     })), [])
   })
+  default = null
 }

modules/postgresql/README.md

@@ -121,7 +121,7 @@ module "pg" {
 | additional\_users | A list of users to be created in your cluster. A random password would be set for the user if the `random_password` variable is set. | <pre>list(object({<br>    name            = string<br>    password        = string<br>    random_password = bool<br>  }))</pre> | `[]` | no |
 | availability\_type | The availability type for the Cloud SQL instance.This is only used to set up high availability for the PostgreSQL instance. Can be either `ZONAL` or `REGIONAL`. | `string` | `"ZONAL"` | no |
 | backup\_configuration | The backup\_configuration settings subblock for the database settings | <pre>object({<br>    enabled                        = optional(bool, false)<br>    start_time                     = optional(string)<br>    location                       = optional(string)<br>    point_in_time_recovery_enabled = optional(bool, false)<br>    transaction_log_retention_days = optional(string)<br>    retained_backups               = optional(number)<br>    retention_unit                 = optional(string)<br>  })</pre> | `{}` | no |
-| connection\_pool\_config | Manager connection pooling configuration | <pre>object({<br>    enabled = optional(bool, false)<br>    flags = optional(list(object({<br>      name  = string<br>      value = string<br>    })), [])<br>  })</pre> | n/a | yes |
+| connection\_pool\_config | Manager connection pooling configuration | <pre>object({<br>    enabled = optional(bool, false)<br>    flags = optional(list(object({<br>      name  = string<br>      value = string<br>    })), [])<br>  })</pre> | `null` | no |
 | connector\_enforcement | Enforce that clients use the connector library | `bool` | `false` | no |
 | create\_kms\_key\_handle | KeyHandles cannot be deleted from Google Cloud Platform. Destroying a Terraform-managed KeyHandle will remove it from state but will not delete the resource from the project. Set this to false if key handle already exists | `bool` | `true` | no |
 | create\_timeout | The optional timout that is applied to limit long database creates. | `string` | `"30m"` | no |

modules/postgresql/variables.tf

@@ -525,4 +525,5 @@ variable "connection_pool_config" {
       value = string
     })), [])
   })
+  default = null
 }

modules/safer_mysql/README.md

@@ -245,7 +245,7 @@ module "safer-mysql-db" {
 | assign\_public\_ip | Set to true if the master instance should also have a public IP (less secure). | `bool` | `false` | no |
 | availability\_type | The availability type for the master instance. Can be either `REGIONAL` or `null`. | `string` | `"REGIONAL"` | no |
 | backup\_configuration | The backup\_configuration settings subblock for the database settings | <pre>object({<br>    binary_log_enabled             = bool<br>    enabled                        = bool<br>    start_time                     = string<br>    location                       = string<br>    transaction_log_retention_days = string<br>    retained_backups               = number<br>    retention_unit                 = string<br>  })</pre> | <pre>{<br>  "binary_log_enabled": false,<br>  "enabled": false,<br>  "location": null,<br>  "retained_backups": null,<br>  "retention_unit": null,<br>  "start_time": null,<br>  "transaction_log_retention_days": null<br>}</pre> | no |
-| connection\_pool\_config | Manager connection pooling configuration | <pre>object({<br>    enabled = optional(bool, false)<br>    flags = optional(list(object({<br>      name  = string<br>      value = string<br>    })), [])<br>  })</pre> | n/a | yes |
+| connection\_pool\_config | Manager connection pooling configuration | <pre>object({<br>    enabled = optional(bool, false)<br>    flags = optional(list(object({<br>      name  = string<br>      value = string<br>    })), [])<br>  })</pre> | `null` | no |
 | create\_timeout | The optional timout that is applied to limit long database creates. | `string` | `"30m"` | no |
 | data\_cache\_enabled | Whether data cache is enabled for the instance. Defaults to false. Feature is only available for ENTERPRISE\_PLUS tier and supported database\_versions | `bool` | `false` | no |
 | database\_flags | The database flags for the master instance. See [more details](https://cloud.google.com/sql/docs/mysql/flags) | <pre>list(object({<br>    name  = string<br>    value = string<br>  }))</pre> | `[]` | no |

modules/safer_mysql/variables.tf

@@ -436,4 +436,5 @@ variable "connection_pool_config" {
       value = string
     })), [])
   })
+  default = null
 }