Required AWS instance profile permissions for Snowflake on AWS

Tonic Structural orchestrates the creation, usage, and deletion of several AWS components when it uses Snowflake. The required permissions to do so are taken from the Instance Profile role of the machine that runs Structural's server. This role needs the below permissions.

For both types of Snowflake on AWS data generation, the instance profile role requires Amazon S3 permissions. For the Lambda-based processing, the instance profile role also requires Amazon SQS and Lambda permissions.

Note that these permissions are starting point. Based on your exact AWS setup, you might need to add other permissions. For example, if you use AWS Key Management Service (KMS) on your S3 buckets, then you might need to grant AWS KMS access.

These example policies allow Structural to properly orchestrate jobs in your AWS infrastructure. It assumes that you use default names for objects in AWS, and that your source and destination S3 bucket names begin with the "tonic-" prefix.

Required permissions for the default data generation

The default Snowflake on AWS data generation does not use Lambda or SQS. For the default data generation, the instance profile requires the following permissions.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket"
            ],
            "Resource": [
                "arn:aws:s3:::tonic-*"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:PutObject",
                "s3:GetObject",
                "s3:GetObjectVersion",
                "s3:DeleteObject",
                "s3:DeleteObjectVersion"
            ],
            "Resource": "arn:aws:s3:::tonic-*/*"
        },
        {
            "Effect": "Allow",
            "Action": "s3:ListBucket",
            "Resource": "arn:aws:s3:::tonic-*",
            "Condition": {
                "StringLike": {
                    "s3:prefix": [
                        "*"
                    ]
                }
            }
        }
    ]
}

Required permissions for the Lambda data generation

The Lambda data generation for Snowflake on AWS requires the following permissions:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "sqs:ListQueues",
                "lambda:CreateEventSourceMapping",
                "lambda:DeleteEventSourceMapping",
                "lambda:GetEventSourceMapping",
                "lambda:ListFunctions"
            ],
            "Resource": "*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "sqs:ChangeMessageVisibility",
                "sqs:CreateQueue",
                "sqs:DeleteMessage",
                "sqs:DeleteQueue",
                "sqs:GetQueueAttributes",
                "sqs:GetQueueUrl",
                "sqs:ListDeadLetterSourceQueues",
                "sqs:ListQueueTags",
                "sqs:ReceiveMessage",
                "sqs:SendMessage",
                "sqs:SetQueueAttributes",
                "s3:ListBucket",
                "s3:GetBucketNotification",
                "s3:PutBucketNotification",
                "lambda:CreateFunction",
                "lambda:GetFunctionConfiguration",
                "lambda:UpdateFunctionConfiguration"
            ],
            "Resource": [
                "arn:aws:sqs:*:*:tonic-*",
                "arn:aws:s3:::tonic-*",
                "arn:aws:lambda:*:*:function:tonic-*"

            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "iam:PassRole"
            ],
            "Resource": [
                <ARN to Tonic Lambda Role (see below docs)>
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:PutObject",
                "s3:GetObject",
                "s3:GetObjectVersion",
                "s3:DeleteObject",
                "s3:DeleteObjectVersion"
            ],
            "Resource": "arn:aws:s3:::tonic-*/*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "logs:DescribeLogStreams",
                "logs:GetQueryResults",
                "logs:GetLogEvents",
                "logs:FilterLogEvents",
                "logs:StartQuery",
                "logs:StopQuery"
            ],
            "Resource": ["arn:aws:lambda:${region}:${account_id}:log-group:/aws/lambda/tonic-*"]
        },
        {
            "Effect": "Allow",
            "Action": "s3:ListBucket",
            "Resource": "arn:aws:s3:::tonic-*",
            "Condition": {
                "StringLike": {
                    "s3:prefix": [
                        "*"
                    ]
                }
            }
        }
    ]
}

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