Chalice - A tool to facilitate Python based lambda deployment

Overview

Chalice

Chalice is a tool to facilitate Python based lambda deployment. This repo contains the output of my basic exploration of this tool.

My specific goal with this tiny project was to examine the output of the terraform code and understand what resources will be created for a helloworld project.

I followed this tutorial, although used virtualenv a bit differently.

python3 --version
python3 -m venv venv38
. venv38/bin/activate

As instructed in the tutorial, instead of running chalice deploy, I used chalice package to specify terraform as the package format. Once executed, the output folder contained the zip file for the lambda and the terraform code file in JSON format. terraform should be run in the output folder to initiate deployment.

chalice package --pkg-format terraform /tmp/packaged-app/

Applying terraform

Output of the terraform apply command shows the creation of the following resources:

  • aws_api_gateway_deployment
  • aws_api_gateway_rest_api
  • aws_iam_role
  • aws_iam_role_policy
  • aws_lambda_function
  • aws_lambda_permission

And here is the output:

$ terraform apply
provider.aws.region
  The region where AWS operations will take place. Examples
  are us-east-1, us-west-2, etc.

  Enter a value: eu-west-1


Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  # aws_api_gateway_deployment.rest_api will be created
  + resource "aws_api_gateway_deployment" "rest_api" {
      + created_date      = (known after apply)
      + execution_arn     = (known after apply)
      + id                = (known after apply)
      + invoke_url        = (known after apply)
      + rest_api_id       = (known after apply)
      + stage_description = (known after apply)
      + stage_name        = "api"
    }

  # aws_api_gateway_rest_api.rest_api will be created
  + resource "aws_api_gateway_rest_api" "rest_api" {
      + api_key_source               = (known after apply)
      + arn                          = (known after apply)
      + binary_media_types           = [
          + "application/octet-stream",
          + "application/x-tar",
          + "application/zip",
          + "audio/basic",
          + "audio/ogg",
          + "audio/mp4",
          + "audio/mpeg",
          + "audio/wav",
          + "audio/webm",
          + "image/png",
          + "image/jpg",
          + "image/jpeg",
          + "image/gif",
          + "video/ogg",
          + "video/mpeg",
          + "video/webm",
        ]
      + body                         = (known after apply)
      + created_date                 = (known after apply)
      + description                  = (known after apply)
      + disable_execute_api_endpoint = (known after apply)
      + execution_arn                = (known after apply)
      + id                           = (known after apply)
      + minimum_compression_size     = -1
      + name                         = "test-tf-deploy"
      + policy                       = (known after apply)
      + root_resource_id             = (known after apply)
      + tags_all                     = (known after apply)

      + endpoint_configuration {
          + types            = [
              + "EDGE",
            ]
          + vpc_endpoint_ids = (known after apply)
        }
    }

  # aws_iam_role.default-role will be created
  + resource "aws_iam_role" "default-role" {
      + arn                   = (known after apply)
      + assume_role_policy    = jsonencode(
            {
              + Statement = [
                  + {
                      + Action    = "sts:AssumeRole"
                      + Effect    = "Allow"
                      + Principal = {
                          + Service = "lambda.amazonaws.com"
                        }
                      + Sid       = ""
                    },
                ]
              + Version   = "2012-10-17"
            }
        )
      + create_date           = (known after apply)
      + force_detach_policies = false
      + id                    = (known after apply)
      + managed_policy_arns   = (known after apply)
      + max_session_duration  = 3600
      + name                  = "test-tf-deploy-dev"
      + name_prefix           = (known after apply)
      + path                  = "/"
      + tags_all              = (known after apply)
      + unique_id             = (known after apply)

      + inline_policy {
          + name   = (known after apply)
          + policy = (known after apply)
        }
    }

  # aws_iam_role_policy.default-role will be created
  + resource "aws_iam_role_policy" "default-role" {
      + id     = (known after apply)
      + name   = "default-rolePolicy"
      + policy = jsonencode(
            {
              + Statement = [
                  + {
                      + Action   = [
                          + "logs:CreateLogGroup",
                          + "logs:CreateLogStream",
                          + "logs:PutLogEvents",
                        ]
                      + Effect   = "Allow"
                      + Resource = "arn:*:logs:*:*:*"
                    },
                ]
              + Version   = "2012-10-17"
            }
        )
      + role   = (known after apply)
    }

  # aws_lambda_function.api_handler will be created
  + resource "aws_lambda_function" "api_handler" {
      + architectures                  = (known after apply)
      + arn                            = (known after apply)
      + filename                       = "./deployment.zip"
      + function_name                  = "test-tf-deploy-dev"
      + handler                        = "app.app"
      + id                             = (known after apply)
      + invoke_arn                     = (known after apply)
      + last_modified                  = (known after apply)
      + memory_size                    = 128
      + package_type                   = "Zip"
      + publish                        = false
      + qualified_arn                  = (known after apply)
      + reserved_concurrent_executions = -1
      + role                           = (known after apply)
      + runtime                        = "python3.8"
      + signing_job_arn                = (known after apply)
      + signing_profile_version_arn    = (known after apply)
      + source_code_hash               = "G/z6BLWCK/9iNDEl1lRyYpXyFoo/hJkW0NdhLEf5tUc="
      + source_code_size               = (known after apply)
      + tags                           = {
          + "aws-chalice" = "version=1.26.5:stage=dev:app=test-tf-deploy"
        }
      + tags_all                       = {
          + "aws-chalice" = "version=1.26.5:stage=dev:app=test-tf-deploy"
        }
      + timeout                        = 60
      + version                        = (known after apply)

      + tracing_config {
          + mode = (known after apply)
        }
    }

  # aws_lambda_permission.rest_api_invoke will be created
  + resource "aws_lambda_permission" "rest_api_invoke" {
      + action        = "lambda:InvokeFunction"
      + function_name = (known after apply)
      + id            = (known after apply)
      + principal     = "apigateway.amazonaws.com"
      + source_arn    = (known after apply)
      + statement_id  = (known after apply)
    }

Plan: 6 to add, 0 to change, 0 to destroy.

Changes to Outputs:
  + EndpointURL = (known after apply)
  + RestAPIId   = (known after apply)
╷
│ Warning: Deprecated Resource
│
│   with data.null_data_source.chalice,
│   on chalice.tf.json line 109, in data.null_data_source.chalice:109:       }
│
│ The null_data_source was historically used to construct intermediate values to re-use elsewhere in configuration, the same can now be achieved using locals
│
│ (and one more similar warning elsewhere)
╵

Do you want to perform these actions?
  Terraform will perform the actions described above.
  Only 'yes' will be accepted to approve.

  Enter a value: yes

aws_iam_role.default-role: Creating...
aws_iam_role.default-role: Creation complete after 2s [id=test-tf-deploy-dev]
aws_iam_role_policy.default-role: Creating...
aws_lambda_function.api_handler: Creating...
aws_iam_role_policy.default-role: Creation complete after 1s [id=test-tf-deploy-dev:default-rolePolicy]
aws_lambda_function.api_handler: Still creating... [10s elapsed]
aws_lambda_function.api_handler: Creation complete after 14s [id=test-tf-deploy-dev]
aws_api_gateway_rest_api.rest_api: Creating...
aws_api_gateway_rest_api.rest_api: Creation complete after 1s [id=fzegk1qj6c]
aws_api_gateway_deployment.rest_api: Creating...
aws_lambda_permission.rest_api_invoke: Creating...
aws_lambda_permission.rest_api_invoke: Creation complete after 1s [id=terraform-20220203152421383500000001]
aws_api_gateway_deployment.rest_api: Creation complete after 1s [id=g8xs21]

Apply complete! Resources: 6 added, 0 changed, 0 destroyed.

TODO

  • Build a pipeline
Owner
Csilla Bessenyei
Csilla Bessenyei
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