feat: add Elasticache as session save handler

[JoshuaLicense]

Description

Points the app to use the redis cache as a session store.

Related issue: https://dvsa.atlassian.net/browse/VOL-5775

[github-actions]

Terraform plan for environment: int

Commit: 6165acf

API version: 2791b9c
CLI version: 2791b9c
Selfserve version: 6165acf
Internal version: 6165acf

Plan summary

3 to add, 3 to change, 0 to destroy

🆕 Creates

module.service.module.ecs_service["api"].aws_ecs_task_definition.this[0]
module.service.module.ecs_service["internal"].aws_ecs_task_definition.this[0]
module.service.module.ecs_service["selfserve"].aws_ecs_task_definition.this[0]

📖 Reads

module.service.module.ecs_service["api"].data.aws_ecs_task_definition.this[0]
module.service.module.ecs_service["internal"].data.aws_ecs_task_definition.this[0]
module.service.module.ecs_service["selfserve"].data.aws_ecs_task_definition.this[0]

🔄 Updates

module.service.module.ecs_service["api"].aws_ecs_service.this[0]
module.service.module.ecs_service["internal"].aws_ecs_service.this[0]
module.service.module.ecs_service["selfserve"].aws_ecs_service.this[0]

---

Show full plan

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  ~ update in-place
+/- create replacement and then destroy
 <= read (data resources)

Terraform will perform the following actions:

  # module.service.module.ecs_service["api"].data.aws_ecs_task_definition.this[0] will be read during apply
  # (depends on a resource or a module with changes pending)
 <= data "aws_ecs_task_definition" "this" {
      + arn                  = (known after apply)
      + arn_without_revision = (known after apply)
      + execution_role_arn   = (known after apply)
      + family               = (known after apply)
      + id                   = (known after apply)
      + network_mode         = (known after apply)
      + revision             = (known after apply)
      + status               = (known after apply)
      + task_definition      = "vol-app-int-api-service"
      + task_role_arn        = (known after apply)
    }

  # module.service.module.ecs_service["api"].aws_ecs_service.this[0] will be updated in-place
  ~ resource "aws_ecs_service" "this" {
        id                                 = "arn:aws:ecs:eu-west-1:054614622558:service/vol-app-int-api-cluster/vol-app-int-api-service"
        name                               = "vol-app-int-api-service"
        tags                               = {}
      ~ task_definition                    = "vol-app-int-api-service:22" -> (known after apply)
        # (16 unchanged attributes hidden)

        # (5 unchanged blocks hidden)
    }

  # module.service.module.ecs_service["api"].aws_ecs_task_definition.this[0] must be replaced
+/- resource "aws_ecs_task_definition" "this" {
      ~ arn                      = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-int-api-service:22" -> (known after apply)
      ~ arn_without_revision     = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-int-api-service" -> (known after apply)
      ~ container_definitions    = jsonencode(
          ~ [
              ~ {
                  ~ environment            = [
                        {
                            name  = "APP_VERSION"
                            value = "2791b9c135"
                        },
                      + {
                          + name  = "ELASTICACHE_URL"
                          + value = "tcp://cache.qa.olcs.dev-dvsacloud.uk:6379"
                        },
                        {
                            name  = "ENVIRONMENT_NAME"
                            value = "QA"
                        },
                    ]
                    name                   = "api"
                    # (17 unchanged attributes hidden)
                },
            ] # forces replacement
        )
      ~ id                       = "vol-app-int-api-service" -> (known after apply)
      ~ revision                 = 22 -> (known after apply)
      - tags                     = {} -> null
        # (12 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

  # module.service.module.ecs_service["internal"].data.aws_ecs_task_definition.this[0] will be read during apply
  # (depends on a resource or a module with changes pending)
 <= data "aws_ecs_task_definition" "this" {
      + arn                  = (known after apply)
      + arn_without_revision = (known after apply)
      + execution_role_arn   = (known after apply)
      + family               = (known after apply)
      + id                   = (known after apply)
      + network_mode         = (known after apply)
      + revision             = (known after apply)
      + status               = (known after apply)
      + task_definition      = "vol-app-int-internal-service"
      + task_role_arn        = (known after apply)
    }

  # module.service.module.ecs_service["internal"].aws_ecs_service.this[0] will be updated in-place
  ~ resource "aws_ecs_service" "this" {
        id                                 = "arn:aws:ecs:eu-west-1:054614622558:service/vol-app-int-internal-cluster/vol-app-int-internal-service"
        name                               = "vol-app-int-internal-service"
        tags                               = {}
      ~ task_definition                    = "vol-app-int-internal-service:16" -> (known after apply)
        # (16 unchanged attributes hidden)

        # (5 unchanged blocks hidden)
    }

  # module.service.module.ecs_service["internal"].aws_ecs_task_definition.this[0] must be replaced
+/- resource "aws_ecs_task_definition" "this" {
      ~ arn                      = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-int-internal-service:16" -> (known after apply)
      ~ arn_without_revision     = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-int-internal-service" -> (known after apply)
      ~ container_definitions    = jsonencode(
          ~ [
              ~ {
                  ~ environment            = [
                      ~ {
                            name  = "APP_VERSION"
                          ~ value = "6b844f144a" -> "6165acf4bc"
                        },
                        {
                            name  = "CDN_URL"
                            value = "d36shynblr0xo9.cloudfront.net"
                        },
                      + {
                          + name  = "ELASTICACHE_URL"
                          + value = "tcp://cache.qa.olcs.dev-dvsacloud.uk:6379"
                        },
                        {
                            name  = "ENVIRONMENT_NAME"
                            value = "QA"
                        },
                    ]
                  ~ image                  = "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/internal:6b844f144a" -> "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/internal:6165acf4bc"
                    name                   = "internal"
                    # (16 unchanged attributes hidden)
                },
            ] # forces replacement
        )
      ~ id                       = "vol-app-int-internal-service" -> (known after apply)
      ~ revision                 = 16 -> (known after apply)
      - tags                     = {} -> null
        # (12 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

  # module.service.module.ecs_service["selfserve"].data.aws_ecs_task_definition.this[0] will be read during apply
  # (depends on a resource or a module with changes pending)
 <= data "aws_ecs_task_definition" "this" {
      + arn                  = (known after apply)
      + arn_without_revision = (known after apply)
      + execution_role_arn   = (known after apply)
      + family               = (known after apply)
      + id                   = (known after apply)
      + network_mode         = (known after apply)
      + revision             = (known after apply)
      + status               = (known after apply)
      + task_definition      = "vol-app-int-selfserve-service"
      + task_role_arn        = (known after apply)
    }

  # module.service.module.ecs_service["selfserve"].aws_ecs_service.this[0] will be updated in-place
  ~ resource "aws_ecs_service" "this" {
        id                                 = "arn:aws:ecs:eu-west-1:054614622558:service/vol-app-int-selfserve-cluster/vol-app-int-selfserve-service"
        name                               = "vol-app-int-selfserve-service"
        tags                               = {}
      ~ task_definition                    = "vol-app-int-selfserve-service:19" -> (known after apply)
        # (16 unchanged attributes hidden)

        # (5 unchanged blocks hidden)
    }

  # module.service.module.ecs_service["selfserve"].aws_ecs_task_definition.this[0] must be replaced
+/- resource "aws_ecs_task_definition" "this" {
      ~ arn                      = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-int-selfserve-service:19" -> (known after apply)
      ~ arn_without_revision     = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-int-selfserve-service" -> (known after apply)
      ~ container_definitions    = jsonencode(
          ~ [
              ~ {
                  ~ environment            = [
                      ~ {
                            name  = "APP_VERSION"
                          ~ value = "d1eb15fb7f" -> "6165acf4bc"
                        },
                        {
                            name  = "CDN_URL"
                            value = "d36shynblr0xo9.cloudfront.net"
                        },
                      + {
                          + name  = "ELASTICACHE_URL"
                          + value = "tcp://cache.qa.olcs.dev-dvsacloud.uk:6379"
                        },
                        {
                            name  = "ENVIRONMENT_NAME"
                            value = "QA"
                        },
                    ]
                  ~ image                  = "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/selfserve:d1eb15fb7f" -> "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/selfserve:6165acf4bc"
                    name                   = "selfserve"
                    # (16 unchanged attributes hidden)
                },
            ] # forces replacement
        )
      ~ id                       = "vol-app-int-selfserve-service" -> (known after apply)
      ~ revision                 = 19 -> (known after apply)
      - tags                     = {} -> null
        # (12 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

Plan: 3 to add, 3 to change, 3 to destroy.

[github-actions]

Terraform plan for environment: dev

Commit: 6165acf

API version: 2791b9c
CLI version: 2791b9c
Selfserve version: 6165acf
Internal version: 6165acf

Plan summary

3 to add, 3 to change, 0 to destroy

🆕 Creates

module.service.module.ecs_service["api"].aws_ecs_task_definition.this[0]
module.service.module.ecs_service["internal"].aws_ecs_task_definition.this[0]
module.service.module.ecs_service["selfserve"].aws_ecs_task_definition.this[0]

📖 Reads

module.service.module.ecs_service["api"].data.aws_ecs_task_definition.this[0]
module.service.module.ecs_service["internal"].data.aws_ecs_task_definition.this[0]
module.service.module.ecs_service["selfserve"].data.aws_ecs_task_definition.this[0]

🔄 Updates

module.service.module.ecs_service["api"].aws_ecs_service.this[0]
module.service.module.ecs_service["internal"].aws_ecs_service.this[0]
module.service.module.ecs_service["selfserve"].aws_ecs_service.this[0]

---

Show full plan

Terraform used the selected providers to generate the following execution
plan. Resource actions are indicated with the following symbols:
  ~ update in-place
+/- create replacement and then destroy
 <= read (data resources)

Terraform will perform the following actions:

  # module.service.module.ecs_service["api"].data.aws_ecs_task_definition.this[0] will be read during apply
  # (depends on a resource or a module with changes pending)
 <= data "aws_ecs_task_definition" "this" {
      + arn                  = (known after apply)
      + arn_without_revision = (known after apply)
      + execution_role_arn   = (known after apply)
      + family               = (known after apply)
      + id                   = (known after apply)
      + network_mode         = (known after apply)
      + revision             = (known after apply)
      + status               = (known after apply)
      + task_definition      = "vol-app-dev-api-service"
      + task_role_arn        = (known after apply)
    }

  # module.service.module.ecs_service["api"].aws_ecs_service.this[0] will be updated in-place
  ~ resource "aws_ecs_service" "this" {
        id                                 = "arn:aws:ecs:eu-west-1:054614622558:service/vol-app-dev-api-cluster/vol-app-dev-api-service"
        name                               = "vol-app-dev-api-service"
        tags                               = {}
      ~ task_definition                    = "vol-app-dev-api-service:49" -> (known after apply)
        # (16 unchanged attributes hidden)

        # (5 unchanged blocks hidden)
    }

  # module.service.module.ecs_service["api"].aws_ecs_task_definition.this[0] must be replaced
+/- resource "aws_ecs_task_definition" "this" {
      ~ arn                      = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-dev-api-service:49" -> (known after apply)
      ~ arn_without_revision     = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-dev-api-service" -> (known after apply)
      ~ container_definitions    = jsonencode(
          ~ [
              ~ {
                  ~ environment            = [
                        {
                            name  = "APP_VERSION"
                            value = "2791b9c135"
                        },
                      + {
                          + name  = "ELASTICACHE_URL"
                          + value = "tcp://cache.dev.olcs.dev-dvsacloud.uk:6379"
                        },
                        {
                            name  = "ENVIRONMENT_NAME"
                            value = "DEV"
                        },
                    ]
                    name                   = "api"
                    # (17 unchanged attributes hidden)
                },
            ] # forces replacement
        )
      ~ id                       = "vol-app-dev-api-service" -> (known after apply)
      ~ revision                 = 49 -> (known after apply)
      - tags                     = {} -> null
        # (12 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

  # module.service.module.ecs_service["internal"].data.aws_ecs_task_definition.this[0] will be read during apply
  # (depends on a resource or a module with changes pending)
 <= data "aws_ecs_task_definition" "this" {
      + arn                  = (known after apply)
      + arn_without_revision = (known after apply)
      + execution_role_arn   = (known after apply)
      + family               = (known after apply)
      + id                   = (known after apply)
      + network_mode         = (known after apply)
      + revision             = (known after apply)
      + status               = (known after apply)
      + task_definition      = "vol-app-dev-internal-service"
      + task_role_arn        = (known after apply)
    }

  # module.service.module.ecs_service["internal"].aws_ecs_service.this[0] will be updated in-place
  ~ resource "aws_ecs_service" "this" {
        id                                 = "arn:aws:ecs:eu-west-1:054614622558:service/vol-app-dev-internal-cluster/vol-app-dev-internal-service"
        name                               = "vol-app-dev-internal-service"
        tags                               = {}
      ~ task_definition                    = "vol-app-dev-internal-service:37" -> (known after apply)
        # (16 unchanged attributes hidden)

        # (5 unchanged blocks hidden)
    }

  # module.service.module.ecs_service["internal"].aws_ecs_task_definition.this[0] must be replaced
+/- resource "aws_ecs_task_definition" "this" {
      ~ arn                      = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-dev-internal-service:37" -> (known after apply)
      ~ arn_without_revision     = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-dev-internal-service" -> (known after apply)
      ~ container_definitions    = jsonencode(
          ~ [
              ~ {
                  ~ environment            = [
                      ~ {
                            name  = "APP_VERSION"
                          ~ value = "6b844f144a" -> "6165acf4bc"
                        },
                        {
                            name  = "CDN_URL"
                            value = "d23zgifomtl7hu.cloudfront.net"
                        },
                      + {
                          + name  = "ELASTICACHE_URL"
                          + value = "tcp://cache.dev.olcs.dev-dvsacloud.uk:6379"
                        },
                        {
                            name  = "ENVIRONMENT_NAME"
                            value = "DEV"
                        },
                    ]
                  ~ image                  = "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/internal:6b844f144a" -> "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/internal:6165acf4bc"
                    name                   = "internal"
                    # (16 unchanged attributes hidden)
                },
            ] # forces replacement
        )
      ~ id                       = "vol-app-dev-internal-service" -> (known after apply)
      ~ revision                 = 37 -> (known after apply)
      - tags                     = {} -> null
        # (12 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

  # module.service.module.ecs_service["selfserve"].data.aws_ecs_task_definition.this[0] will be read during apply
  # (depends on a resource or a module with changes pending)
 <= data "aws_ecs_task_definition" "this" {
      + arn                  = (known after apply)
      + arn_without_revision = (known after apply)
      + execution_role_arn   = (known after apply)
      + family               = (known after apply)
      + id                   = (known after apply)
      + network_mode         = (known after apply)
      + revision             = (known after apply)
      + status               = (known after apply)
      + task_definition      = "vol-app-dev-selfserve-service"
      + task_role_arn        = (known after apply)
    }

  # module.service.module.ecs_service["selfserve"].aws_ecs_service.this[0] will be updated in-place
  ~ resource "aws_ecs_service" "this" {
        id                                 = "arn:aws:ecs:eu-west-1:054614622558:service/vol-app-dev-selfserve-cluster/vol-app-dev-selfserve-service"
        name                               = "vol-app-dev-selfserve-service"
        tags                               = {}
      ~ task_definition                    = "vol-app-dev-selfserve-service:41" -> (known after apply)
        # (16 unchanged attributes hidden)

        # (5 unchanged blocks hidden)
    }

  # module.service.module.ecs_service["selfserve"].aws_ecs_task_definition.this[0] must be replaced
+/- resource "aws_ecs_task_definition" "this" {
      ~ arn                      = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-dev-selfserve-service:41" -> (known after apply)
      ~ arn_without_revision     = "arn:aws:ecs:eu-west-1:054614622558:task-definition/vol-app-dev-selfserve-service" -> (known after apply)
      ~ container_definitions    = jsonencode(
          ~ [
              ~ {
                  ~ environment            = [
                      ~ {
                            name  = "APP_VERSION"
                          ~ value = "d1eb15fb7f" -> "6165acf4bc"
                        },
                        {
                            name  = "CDN_URL"
                            value = "d23zgifomtl7hu.cloudfront.net"
                        },
                      + {
                          + name  = "ELASTICACHE_URL"
                          + value = "tcp://cache.dev.olcs.dev-dvsacloud.uk:6379"
                        },
                        {
                            name  = "ENVIRONMENT_NAME"
                            value = "DEV"
                        },
                    ]
                  ~ image                  = "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/selfserve:d1eb15fb7f" -> "054614622558.dkr.ecr.eu-west-1.amazonaws.com/vol-app/selfserve:6165acf4bc"
                    name                   = "selfserve"
                    # (16 unchanged attributes hidden)
                },
            ] # forces replacement
        )
      ~ id                       = "vol-app-dev-selfserve-service" -> (known after apply)
      ~ revision                 = 41 -> (known after apply)
      - tags                     = {} -> null
        # (12 unchanged attributes hidden)

        # (1 unchanged block hidden)
    }

Plan: 3 to add, 3 to change, 3 to destroy.