terraform-aws-api-gateway-lambda-resource/lambda.tf at main · b-social/terraform-aws-api-gateway-lambda-resource · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
data "aws_caller_identity" "current" {
}

resource "aws_iam_role" "proxy_lambda_execution_role" {
  description = "proxy_lambda_execution_role"
  tags = var.tags
  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": "sts:AssumeRole",
      "Principal": {
        "Service": "lambda.amazonaws.com"
      },
      "Effect": "Allow"
    }
  ]
}
EOF

}

resource "aws_iam_role_policy" "proxy_lambda_execution_policy" {
  role = aws_iam_role.proxy_lambda_execution_role.id
  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "ec2:DescribeNetworkInterfaces",
        "ec2:CreateNetworkInterface",
        "ec2:DeleteNetworkInterface",
        "ec2:DescribeSecurityGroups",
        "ec2:DescribeSubnets",
        "ec2:DescribeVpcs"
      ],
      "Resource": [
        "*"
      ]
    },
    {
            "Effect": "Allow",
            "Action": "logs:CreateLogGroup",
            "Resource": "arn:aws:logs:${var.region}:*:*"
        },
        {
            "Effect": "Allow",
            "Action": [
                "logs:CreateLogStream",
                "logs:PutLogEvents"
            ],
            "Resource": [
                "arn:aws:logs:${var.region}:${var.account_id}:*"
            ]
        }
  ]
}
EOF

}

resource "aws_security_group" "sg_lambda" {
  description = "proxy-lambda-${var.deployment_identifier}"
  vpc_id = var.vpc_id

  ingress {
    from_port = 0
    to_port = 0
    protocol = "-1"
    cidr_blocks = var.lambda_ingress_cidr_blocks
  }

  egress {
    from_port = 0
    to_port = 0
    protocol = "-1"
    cidr_blocks = var.lambda_egress_cidr_blocks
  }
}

resource "aws_lambda_function" "lambda" {
  filename = var.lambda_zip_path
  function_name = var.lambda_function_name
  role = aws_iam_role.proxy_lambda_execution_role.arn
  handler = var.lambda_handler
  source_code_hash = base64sha256(filebase64(var.lambda_zip_path))
  runtime = var.lambda_runtime
  timeout = var.lambda_timeout
  memory_size = var.lambda_memory_size

  environment {
    variables = var.lambda_environment_variables
  }

  vpc_config {
    security_group_ids = [
      aws_security_group.sg_lambda.id
    ]
    subnet_ids = var.lambda_subnet_ids
  }

  tags = var.tags
}