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This repository contains the remote code execution engine for the pennant-notebook project.

Dredd API

Application can be accessed at : www.trypennant.com

v1.3.0-deployment: Adds security features. Not recommended as a base for development since it requires configuration of secrets

v1.3.0: Distributed architecture separating API server from docker host.

v1.2.0: Revised declaration to reassignment & container cleanup. Pre-functional partitioning of API server and docker host.

v1.1.0: Previous state before merge of declaration to reassignment logic and resource cleanup

The 1.0.0 branch implements the code execution service as an EDA. Endpoints have not changed.

Latest stable version is branch v0.1.0

Last updated: 6/28/23

Base URL

The default base URL for all API endpoints is: http://localhost:3002/api

Endpoints

Submit Cells

Submits a notebook for execution.

URL: /submit

Method: POST

Parameter Type Required Description
notebookId string Yes The ID of the notebook
cells array Yes An array of cells to be executed.

The cells array should contain objects with the following properties:

Parameter Type Required Description
cellId string Yes The ID of the cell to be executed.
code string Yes The code content of the cell to be executed.

Response:

Property Type Description
message string A status message indicating success.
submissionId string Token to track the status of the submission.

Get Submission Status

Retrieves the status of a submitted notebook.

URL: /status/:submissionId

Method: GET

Parameters:

Parameter Type Required Description
submissionId string Yes Token received by the submission endpoint.

Response: Returns the output of the notebook submission.

Property Type Description
submissionId string
status string pending, success, or error
requestOrder array Order of the cells array from the original submission
cellsExecuted array Actual cells executed
results array Array of cell execution results

results is an array of objects with the following properties:

Property Type Description
cellId string
type string output, error or critical
output string Console output string or stack trace

Reset Notebook Context

Resets the context for a notebook.

URL: /reset/:notebookId

Method: POST

Parameter:

Parameter Type Required Description
notebookId string Yes The ID of the notebook to reset the context.

Response: Returns a message indicating that the context has been reset.

API Status Codes

Status code Description
200 OK
400 Bad request
404 Not found
500 Internal server error

Examples

POST /api/submit

Returns: 200 OK and submissionId (token)

Initiates submission. Starts code execution process. You can send one or many cells as an array value. Cells will be executed in order.

Sending one:

{
	"notebookId": "111", // from FE
	"cells": [
    	{
        	"cellId": "2", // From frontend
        	"code": "console.log('hi judah!')"
    	}
	],
	"timeout": 5
}

Sending many:

{
	"notebookId": "111",
	"cells": [  
    	{
        	"cellId": "3",
        	"code": "const name = 'Bob'"
    	},
    	{
        	"cellId": "4",
        	"code": "const age = 30"
    	},
    	{
        	"cellId": "5",
        	"code": "console.log(name, ' is ', age, ' years old')"
    	}
	],
	"timeout": 5
}

GET /api/status/:sessionId

Returns: 200 OK and payload of results. status field may be "pending", "success" or "error". Note that error refers to an exception being raised by a cell execution; not a server-side issue. Such errors will be flagged using HTTP status codes.

{
   "submissionId": "0c5796d7-c8fb-4b4c-a13d-9ebedc914551",
   "status": "success",
   "requestOrder": [
       [
           "3",
           "4",
           "5"
       ]
   ],
   "cellsExecuted": [
       "3",
       "4",
       "5"
   ],
   "results": [
       {
           "cellId": "3",
           "type": "output",
           "output": ""
       },
       {
           "cellId": "4",
           "type": "output",
           "output": ""
       },
       {
           "cellId": "5",
           "type": "output",
           "output": "Bob  is  30  years old\n"
       }
   ]
}