-
Notifications
You must be signed in to change notification settings - Fork 23
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
1 changed file
with
139 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| # MONAI Deploy Message Broker Requirements | ||
|
|
||
| ## Background | ||
|
|
||
| The MONAI Deploy sub-systems, including the Workflow Manager and the Informatics Gateway, use shared virtual storage for sharing data. With the given design, a message broker service must notify all sub-systems when data is available or to notify when an event has occurred. | ||
|
|
||
| This issue is to discuss and decide on a **default** message broker service to be used in the MONAI Deploy project and define message topics/events used for publishing and subscribing events. | ||
|
|
||
| **Important**: users shall be able to replace the **default** message broker service with their choice, and the design shall consider both on-prem, cloud, and edge deployments. | ||
|
|
||
| ## Message Broker Service | ||
|
|
||
| - [RabbitMQ](https://www.rabbitmq.com/) | ||
| - [KubeMQ Server](https://kubemq.io/) | ||
| - [Google Cloud Pub/Sub](https://cloud.google.com/pubsub/) | ||
| - [Apache Kafka](https://kafka.apache.org/intro) | ||
|
|
||
| ## Topics/Events | ||
|
|
||
| This section defines topics/events each sub-system publishes in MONAI Deploy. | ||
|
|
||
| ### Informatics Gateway | ||
|
|
||
| * WorkflowRequest (workflow.request) | ||
| * ExportTaskCompleted (export.completed) | ||
|
|
||
| ### Workflow Manager | ||
|
|
||
| * ExportTaskRequest (export.request) | ||
| * TaskRequest (task.request) | ||
| * WorkflowStarted (workflow.started) | ||
| * WorkflowCompleted (workflow.completed) | ||
|
|
||
| ### Task Manager (Part of Workflow Manager) | ||
|
|
||
| * TaskStarted (task.started) | ||
| * TaskCompleted (task.completed) | ||
|
|
||
| ## Topic Payload Specs | ||
|
|
||
| This section defines the detailed payload of each topic. | ||
|
|
||
| ### WorkflowRequest | ||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| | Transaction ID | string or UUID | a unique ID to locate the workflow. Used and generated by the event publishers. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association | | ||
| | Files | string[] | a list of file paths (URN) associated with the request | | ||
| | Metadata | string[] | JSON formatted strings associated with the request. E.g., DICOM headers | | ||
| | Workflows | string[] | *optional* - a list of workflows to execute | | ||
|
|
||
| ### ExportTaskCompleted | ||
|
|
||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| | Export Task ID | string or UUID | a unique ID to locate the export task. Generated by the Workflow Manager. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association. | | ||
| | Transaction ID | string or UUID | the unique ID of the actual workflow request. | | ||
| | Status | int (enum )| Status of the export task | | ||
| | Message | string | status details | | ||
| | Sink | string | Sink assigned for the export task | | ||
|
|
||
| #### ExportTask | ||
|
|
||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| | Export Task ID | string or UUID | a unique ID to locate the export task. Generated by the Workflow Manager. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association. | | ||
| | Transaction ID | string or UUID | the unique ID of the actual workflow request. | | ||
| | Files | string[] | a list of file paths (URN) associated with the request | | ||
| | Sink | string | Sink assigned for the export task | | ||
|
|
||
| #### TaskRequest | ||
|
|
||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| | Transaction ID | string or UUID | a unique ID to locate the workflow. Used and generated by the event publishers. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association | | ||
| | Payload Path | string | URN to the task payload | | ||
|
|
||
| TBD | ||
|
|
||
| #### WorkflowStarted | ||
|
|
||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| |-|-|-| | ||
| | Transaction ID | string or UUID | a unique ID to locate the workflow. Used and generated by the event publishers. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association | | ||
| | Status | int (enum) | current status of the workflow | | ||
| | State | int (enum) | current state of the workflow | | ||
| | DateStarted | datetime | Date time the workflow started | | ||
|
|
||
| TBD | ||
|
|
||
| #### WorkflowCompleted | ||
|
|
||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| |-|-|-| | ||
| | Transaction ID | string or UUID | a unique ID to locate the workflow. Used and generated by the event publishers. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association | | ||
| | Status | int (enum) | current status of the workflow | | ||
| | State | int (enum) | current state of the workflow | | ||
| | DateStarted | datetime | Date time the workflow started | | ||
| | DateCompleted | datetime | Date time the workflow completed | | ||
|
|
||
|
|
||
| TBD | ||
|
|
||
| #### TaskStarted | ||
|
|
||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| | Transaction ID | string or UUID | a unique ID to locate the workflow. Used and generated by the event publishers. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association | | ||
| | Payload Path | string | URN to the task payload | | ||
| | Status | int (enum) | current status of the task | | ||
| | State | int (enum) | current state of the task | | ||
| | DateStarted | datetime | Date time the task started | | ||
|
|
||
|
|
||
| TBD | ||
|
|
||
| #### TaskCompleted | ||
|
|
||
| | Field | Type | Description | | ||
| |-|-|-| | ||
| | Transaction ID | string or UUID | a unique ID to locate the workflow. Used and generated by the event publishers. | | ||
| | Correlation ID | string or UUID | a unique ID that traces back to the original request, e.g., a DICOM association | | ||
| | Payload Path | string | URN to the task payload | | ||
| | Status | int (enum) | current status of the task | | ||
| | State | int (enum) | current state of the task | | ||
| | DateStarted | datetime | Date time the task started | | ||
| | DateCompleted | datetime | Date time the task completed | | ||
|
|
||
|
|
||
|
|
||
| TBD |