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main.tf
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main.tf
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/**
* Copyright 2022 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
locals {
prefix = var.prefix == null ? "" : "${var.prefix}-"
is_mysql = can(regex("^MYSQL", var.database_version))
has_replicas = try(length(var.replicas) > 0, false)
is_regional = var.availability_type == "REGIONAL" ? true : false
// Enable backup if the user asks for it or if the user is deploying
// MySQL in HA configuration (regional or with specified replicas)
enable_backup = var.backup_configuration.enabled || (local.is_mysql && local.has_replicas) || (local.is_mysql && local.is_regional)
users = {
for user, password in coalesce(var.users, {}) :
(user) => (
local.is_mysql
? {
name = split("@", user)[0]
host = try(split("@", user)[1], null)
password = try(random_password.passwords[user].result, password)
}
: {
name = user
host = null
password = try(random_password.passwords[user].result, password)
}
)
}
}
resource "google_sql_database_instance" "primary" {
provider = google-beta
project = var.project_id
name = "${local.prefix}${var.name}"
region = var.region
database_version = var.database_version
encryption_key_name = var.encryption_key_name
root_password = var.root_password
settings {
tier = var.tier
deletion_protection_enabled = var.deletion_protection_enabled
disk_autoresize = var.disk_size == null
disk_size = var.disk_size
disk_type = var.disk_type
availability_type = var.availability_type
user_labels = var.labels
activation_policy = var.activation_policy
ip_configuration {
ipv4_enabled = var.ipv4_enabled
private_network = var.network
allocated_ip_range = var.allocated_ip_ranges.primary
require_ssl = var.require_ssl
dynamic "authorized_networks" {
for_each = var.authorized_networks != null ? var.authorized_networks : {}
iterator = network
content {
name = network.key
value = network.value
}
}
}
dynamic "backup_configuration" {
for_each = local.enable_backup ? { 1 = 1 } : {}
content {
enabled = true
// enable binary log if the user asks for it or we have replicas (default in regional),
// but only for MySQL
binary_log_enabled = (
local.is_mysql
? var.backup_configuration.binary_log_enabled || local.has_replicas || local.is_regional
: null
)
start_time = var.backup_configuration.start_time
location = var.backup_configuration.location
point_in_time_recovery_enabled = var.backup_configuration.point_in_time_recovery_enabled
transaction_log_retention_days = var.backup_configuration.log_retention_days
backup_retention_settings {
retained_backups = var.backup_configuration.retention_count
retention_unit = "COUNT"
}
}
}
dynamic "database_flags" {
for_each = var.flags != null ? var.flags : {}
iterator = flag
content {
name = flag.key
value = flag.value
}
}
dynamic "insights_config" {
for_each = var.insights_config != null ? [1] : []
content {
query_insights_enabled = true
query_string_length = var.insights_config.query_string_length
record_application_tags = var.insights_config.record_application_tags
record_client_address = var.insights_config.record_client_address
query_plans_per_minute = var.insights_config.query_plans_per_minute
}
}
}
deletion_protection = var.deletion_protection
}
resource "google_sql_database_instance" "replicas" {
provider = google-beta
for_each = local.has_replicas ? var.replicas : {}
project = var.project_id
name = "${local.prefix}${each.key}"
region = each.value.region
database_version = var.database_version
encryption_key_name = each.value.encryption_key_name
master_instance_name = google_sql_database_instance.primary.name
settings {
tier = var.tier
deletion_protection_enabled = var.deletion_protection_enabled
disk_autoresize = var.disk_size == null
disk_size = var.disk_size
disk_type = var.disk_type
# availability_type = var.availability_type
user_labels = var.labels
activation_policy = var.activation_policy
ip_configuration {
ipv4_enabled = var.ipv4_enabled
private_network = var.network
allocated_ip_range = var.allocated_ip_ranges.replica
dynamic "authorized_networks" {
for_each = var.authorized_networks != null ? var.authorized_networks : {}
iterator = network
content {
name = network.key
value = network.value
}
}
}
dynamic "database_flags" {
for_each = var.flags != null ? var.flags : {}
iterator = flag
content {
name = flag.key
value = flag.value
}
}
}
deletion_protection = var.deletion_protection
}
resource "google_sql_database" "databases" {
for_each = var.databases != null ? toset(var.databases) : toset([])
project = var.project_id
instance = google_sql_database_instance.primary.name
name = each.key
}
resource "random_password" "passwords" {
for_each = toset([
for user, password in coalesce(var.users, {}) :
user
if password == null
])
length = 16
special = true
}
resource "google_sql_user" "users" {
for_each = local.users
project = var.project_id
instance = google_sql_database_instance.primary.name
name = each.value.name
host = each.value.host
password = each.value.password
}
resource "google_sql_ssl_cert" "postgres_client_certificates" {
for_each = var.postgres_client_certificates != null ? toset(var.postgres_client_certificates) : toset([])
provider = google-beta
project = var.project_id
instance = google_sql_database_instance.primary.name
common_name = each.key
}