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dynamo_migration_lambda.tf
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// TODO: PRMT-4648 - THIS IS A ONE-TIME MIGRATION SCRIPT LAMBDA. DELETE THIS .TF FILE AFTER USAGE!
resource "aws_lambda_function" "dynamo_migration" {
filename = var.dynamo_migration_lambda_zip
function_name = "${var.environment}-dynamo-migration-lambda"
role = aws_iam_role.dynamo_migration_lambda.arn
handler = "app.DynamoMigration.lambda_handler"
layers = [aws_lambda_layer_version.psycopg2.arn]
source_code_hash = filebase64sha256(var.dynamo_migration_lambda_zip)
runtime = tolist(aws_lambda_layer_version.psycopg2.compatible_runtimes)[0] // Required for psycopg2 lambda layer to work
timeout = 900
memory_size = 1024
tags = {
Environment = var.environment
CreatedBy = var.repo_name
Terraform = "True"
}
vpc_config {
subnet_ids = module.deductions-private.deductions_private_private_subnets
security_group_ids = [module.deductions-private.vpn_security_group, data.aws_security_group.ehr-transfer-service-ecs-task.id]
}
environment {
variables = {
ENVIRONMENT_NAME = var.environment
OLD_TABLE_NAME = "${var.environment}-ehr-transfer-service-transfer-tracker"
NEW_TABLE_NAME = "${var.environment}-ehr-transfer-tracker"
}
}
depends_on = [
data.archive_file.dynamo_migration_lambda,
aws_iam_role_policy_attachment.lambda_vpc_access_execution
]
}
resource "aws_iam_role" "dynamo_migration_lambda" {
name = "${var.environment}-dynamo-migration-lambda-role"
assume_role_policy = data.aws_iam_policy_document.lambda_assume_role.json
}
resource "aws_iam_role_policy_attachment" "lambda_dynamodb_migration_execution" {
role = aws_iam_role.dynamo_migration_lambda.name
policy_arn = data.aws_iam_policy.lambda_dynamodb_execution_role.arn
}
resource "aws_iam_role_policy_attachment" "lambda_dynamodb_migration_scan_put_update_and_kms_decrypt" {
role = aws_iam_role.dynamo_migration_lambda.name
policy_arn = aws_iam_policy.lambda_dynamodb_migration_scan_put_update_and_kms_decrypt.arn
}
resource "aws_iam_role_policy_attachment" "lambda_rds_migration_access" {
role = aws_iam_role.dynamo_migration_lambda.name
policy_arn = aws_iam_policy.lambda_rds_migration_access.arn
}
resource "aws_iam_role_policy_attachment" "lambda_vpc_access_execution" {
role = aws_iam_role.dynamo_migration_lambda.name
policy_arn = "arn:aws:iam::aws:policy/service-role/AWSLambdaVPCAccessExecutionRole"
}
resource "aws_iam_policy" "lambda_dynamodb_migration_scan_put_update_and_kms_decrypt" {
name = "lambda-dynamodb-scan-put-update-and-kms-decrypt-policy"
description = "Allows Lambda to scan, put and update for the ${local.ehr_transfer_tracker_db_name} as well as decrypting a KMS key"
policy = jsonencode({
"Version" : "2012-10-17",
"Statement" : [
{
"Sid" : "DynamoDBScan",
"Effect" : "Allow",
"Action" : [
"dynamodb:Scan"
],
"Resource" : [
"arn:aws:dynamodb:eu-west-2:${data.aws_caller_identity.current.account_id}:table/${var.environment}-ehr-transfer-service-transfer-tracker"
]
},
{
"Sid" : "DynamoDBPutAndUpdate",
"Effect" : "Allow",
"Action" : [
"dynamodb:PutItem",
"dynamodb:UpdateItem"
],
"Resource" : [
"arn:aws:dynamodb:eu-west-2:${data.aws_caller_identity.current.account_id}:table/${var.environment}-ehr-transfer-tracker"
]
},
{
"Sid" : "KMS",
"Effect" : "Allow",
"Action" : [
"kms:Decrypt"
],
"Resource" : [
data.aws_kms_key.transfer_tracker_dynamodb.arn
]
}
]
})
}
data "aws_kms_key" "transfer_tracker_dynamodb" {
key_id = "alias/transfer-tracker-dynamodb-encryption-kms-key"
}
resource "aws_iam_policy" "lambda_rds_migration_access" {
name = "lambda-rds-access-policy"
description = "Allows Lambda to query data in RDS"
policy = jsonencode({
"Version" : "2012-10-17",
"Statement" : [
{
"Sid" : "VisualEditor0",
"Effect" : "Allow",
"Action" : [
"rds:DescribeDBProxyTargetGroups",
"ssm:ListCommands",
"rds:DescribeDBRecommendations",
"rds:DescribeGlobalClusters",
"ssm:ListInstanceAssociations",
"rds:DescribeRecommendations",
"ssm:DescribeAutomationExecutions",
"ssm:GetMaintenanceWindowTask",
"ssm:DescribeMaintenanceWindowExecutionTaskInvocations",
"rds:DescribeDBProxyTargets",
"ssm:DescribeAutomationStepExecutions",
"rds:DownloadDBLogFilePortion",
"ssm:ListResourceDataSync",
"rds:DescribeSourceRegions",
"ssm:ListDocuments",
"ssm:DescribeMaintenanceWindowsForTarget",
"ssm:ListComplianceItems",
"ssm:GetMaintenanceWindowExecutionTask",
"ssm:GetMaintenanceWindowExecution",
"ssm:ListResourceComplianceSummaries",
"ssm:GetOpsMetadata",
"ssm:DescribeOpsItems",
"rds:DescribeReservedDBInstances",
"rds:DescribeBlueGreenDeployments",
"ssm:DescribeMaintenanceWindows",
"rds:DescribeDbSnapshotTenantDatabases",
"rds:DescribeIntegrations",
"ssm:DescribeEffectivePatchesForPatchBaseline",
"ssm:DescribeDocumentPermission",
"ssm:GetAutomationExecution",
"ssm:DescribePatchGroups",
"ssm:GetDefaultPatchBaseline",
"ssm:DescribeDocument",
"rds:DescribeTenantDatabases",
"ssm:ListAssociationVersions",
"ssm:PutConfigurePackageResult",
"ssm:DescribePatchGroupState",
"rds:DescribeDBClusterBacktracks",
"rds:DescribeReservedDBInstancesOfferings",
"ssm:DescribeMaintenanceWindowExecutionTasks",
"ssm:DescribeInstancePatchStatesForPatchGroup",
"rds:DescribeRecommendationGroups",
"rds:DescribeDBInstances",
"rds:DescribeEngineDefaultClusterParameters",
"ssm:GetDocument",
"rds:DescribeDBProxies",
"ssm:GetInventorySchema",
"ssm:GetParametersByPath",
"ssm:GetMaintenanceWindow",
"rds:DescribeEventCategories",
"rds:DescribeDBProxyEndpoints",
"ssm:DescribeAssociationExecutionTargets",
"rds:DescribeEvents",
"ssm:GetPatchBaseline",
"ssm:ListInventoryEntries",
"ssm:DescribeAssociation",
"ssm:ListOpsItemEvents",
"ssm:DescribeSessions",
"ssm:DescribePatchBaselines",
"ssm:GetResourcePolicies",
"ssm:DescribePatchProperties",
"ssm:GetOpsSummary",
"rds:DescribeDBSnapshotAttributes",
"rds:ListTagsForResource",
"ssm:DescribeInstanceInformation",
"ssm:ListTagsForResource",
"ssm:DescribeDocumentParameters",
"ssm:GetCalendar",
"ssm:GetCalendarState",
"rds:DescribeDBInstanceAutomatedBackups",
"ssm:ListDocumentVersions",
"ssm:ListDocumentMetadataHistory",
"ssm:DescribeMaintenanceWindowSchedule",
"ssm:DescribeInstancePatches",
"rds:DescribeEngineDefaultParameters",
"ssm:GetParameter",
"ssm:GetMaintenanceWindowExecutionTaskInvocation",
"rds:DescribeDBClusterAutomatedBackups",
"ssm:ListOpsMetadata",
"ssm:DescribeParameters",
"ssm:GetConnectionStatus",
"rds:DescribeDBSnapshots",
"ssm:GetOpsItem",
"rds:DescribeDBSecurityGroups",
"ssm:GetParameters",
"ssm:ListOpsItemRelatedItems",
"rds:DescribeValidDBInstanceModifications",
"rds:DescribeOrderableDBInstanceOptions",
"ssm:GetServiceSetting",
"ssm:DescribeAssociationExecutions",
"rds:DescribeCertificates",
"ssm:ListCommandInvocations",
"rds:DescribeOptionGroups",
"rds:DescribeDBShardGroups",
"rds:DescribeDBEngineVersions",
"rds:DescribeDBSubnetGroups",
"rds:DescribeExportTasks",
"ssm:DescribeMaintenanceWindowTasks",
"rds:DescribePendingMaintenanceActions",
"rds:DescribeDBParameterGroups",
"ssm:GetPatchBaselineForPatchGroup",
"ssm:DescribeMaintenanceWindowExecutions",
"ssm:GetManifest",
"ssm:DescribeInstancePatchStates",
"rds:DescribeDBParameters",
"ssm:DescribeInstanceAssociationsStatus",
"ssm:DescribeInstanceProperties",
"rds:DescribeDBClusterSnapshotAttributes",
"rds:DescribeDBClusterParameters",
"rds:DescribeEventSubscriptions",
"ssm:GetDeployablePatchSnapshotForInstance",
"ssm:GetParameterHistory",
"ssm:DescribeMaintenanceWindowTargets",
"rds:DescribeDBLogFiles",
"ssm:DescribeEffectiveInstanceAssociations",
"ssm:DescribeInventoryDeletions",
"ssm:GetInventory",
"ssm:DescribeActivations",
"ssm:GetCommandInvocation",
"ssm:ListComplianceSummaries",
"rds:DescribeDBClusterSnapshots",
"rds:DescribeOptionGroupOptions",
"rds:DownloadCompleteDBLogFile",
"rds:DescribeDBClusterEndpoints",
"ssm:ListAssociations",
"rds:DescribeAccountAttributes",
"rds:DescribeDBClusters",
"rds:DescribeDBClusterParameterGroups",
"ssm:DescribeAvailablePatches"
],
"Resource" : "*"
}
]
})
}
data "archive_file" "dynamo_migration_lambda" {
type = "zip"
source_dir = "../dynamo-migration-lambda"
output_path = var.dynamo_migration_lambda_zip
output_file_mode = "0644"
}
data "aws_security_group" "ehr-transfer-service-ecs-task" {
name = "${var.environment}-ehr-transfer-service-ecs-task-sg"
}
variable "dynamo_migration_lambda_zip" {
type = string
description = "path to zipfile containing lambda code for the dynamo-migration-lambda"
default = "../dynamo-migration-lambda/build/dynamo-migration-lambda.zip"
}
resource "aws_lambda_layer_version" "psycopg2" {
layer_name = "psycopg2"
description = "Contains the psycopg2 library to connect to PostgreSQL databases"
filename = "../lambda-layer-psycopg2/psycopg2.zip"
source_code_hash = filebase64sha256("../lambda-layer-psycopg2/psycopg2.zip")
compatible_runtimes = ["python3.10"]
}