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Add dead letter exchanges and queues to rabbitmq #1834

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merged 2 commits into from
Jul 22, 2024
Merged

Add dead letter exchanges and queues to rabbitmq #1834

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0e5d205
Add dead letter exchanges and queues to rabbitmq
Jul 10, 2024
fa55cef
Add Explanation for dead letter setup for govuk-chat
Jul 22, 2024
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66 changes: 66 additions & 0 deletions terraform/projects/app-publishing-amazonmq/publishing-rabbitmq-schema.json.tpl
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Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,31 @@
},
"priority": 0
},
{
"vhost": "publishing",
"name": "govuk_chat_retry_dlx",
"pattern": "govuk_chat_published_documents",
"apply-to": "queues",
"definition": {
"dead-letter-exchange": "govuk_chat_retry_dlx",
"ha-mode": "all",
"ha-sync-mode": "automatic"
},
"priority": 0
},
{
"vhost": "publishing",
"name": "govuk_chat_retry",
"pattern": "govuk_chat_retry",
"apply-to": "queues",
"definition": {
"dead-letter-exchange": "govuk_chat_dlx",
"message-ttl":"${govuk_chat_retry_message-ttl}",
"ha-mode": "all",
"ha-sync-mode": "automatic"
},
"priority": 0
},
{
"vhost": "publishing",
"name": "ha-all",
Expand Down Expand Up @@ -210,6 +235,13 @@
"auto_delete": false,
"arguments": {}
},
{
"name": "govuk_chat_retry",
"vhost": "publishing",
"durable": true,
"auto_delete": false,
"arguments": {}
},
{
"name": "email_unpublishing",
"vhost": "publishing",
Expand All @@ -228,6 +260,24 @@
"internal": false,
"arguments": {}
},
{
"name": "govuk_chat_retry_dlx",
"vhost": "publishing",
"type": "topic",
"durable": true,
"auto_delete": false,
"internal": false,
"arguments": {}
},
{
"name": "govuk_chat_dlx",
"vhost": "publishing",
"type": "topic",
"durable": true,
"auto_delete": false,
"internal": false,
"arguments": {}
},
{
"name": "content_data_api_dlx",
"vhost": "publishing",
Expand Down Expand Up @@ -414,6 +464,22 @@
"destination_type": "queue",
"routing_key": "*.unpublish.#",
"arguments": {}
},
{
"source": "govuk_chat_retry_dlx",
"vhost": "publishing",
"destination": "govuk_chat_retry",
"destination_type": "queue",
"routing_key": "#",
"arguments": {}
},
{
"source": "govuk_chat_dlx",
"vhost": "publishing",
"destination": "govuk_chat_published_documents",
"destination_type": "queue",
"routing_key": "#",
"arguments": {}
}
]
}
6 changes: 6 additions & 0 deletions terraform/projects/app-publishing-amazonmq/variables.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,12 @@ variable "publishing_amazonmq_broker_name" {
default = "PublishingMQ"
}

variable "govuk_chat_retry_message-ttl" {
type = string
description = "Time in miliseconds before messages in the govuk_chat_retry queue expires and are sent back to the govuk_chat_published_ducoments queue through the dead letter mechanism"
default = "300000"
}

variable "elb_internal_certname" {
type = string
description = "The ACM cert domain name to find the ARN of, so that it can be applied to the Network Load Balancer"
Expand Down
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