# Create a job

## A JOB

<mark style="color:green;">`POST`</mark> `https://api.playment.io/v1/projects/:project_id/jobs`

This endpoint allows you to create a job

#### Path Parameters

| Name        | Type   | Description                                           |
| ----------- | ------ | ----------------------------------------------------- |
| project\_id | string | ID of the project in which you want to create the job |

#### Headers

| Name      | Type   | Description                |
| --------- | ------ | -------------------------- |
| x-api-key | string | API key for authentication |

#### Request Body

| Name           | Type   | Description                                                                                                                                                                                                                                                                                                            |
| -------------- | ------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| batch\_id      | string | <p>A batch is a way to organise multiple jobs under one <code>batch\_id</code>.  You can create new batches from the dashboard or by using the batch creation API.<br><br>If <code>batch\_id</code> is left empty or the key is not present, the job is created in the <code>Default batch</code> in your project.</p> |
| work\_flow\_id | string | The ID of the workflow inside which you want to create the job                                                                                                                                                                                                                                                         |
| data           | object | The `data` object contains all the information and attachments required to label a job. The `data` object is defined below                                                                                                                                                                                             |
| reference\_id  | string | The unique identifier of the job                                                                                                                                                                                                                                                                                       |

{% tabs %}
{% tab title="200 " %}

```
{
  "data": {
    "job_id": "3f3e8675-ca69-46d7-aa34-96f90fcbb732",
    "reference_id": "001",
    "work_flow_id": "2aae1234-acac-1234-eeff-12a22a237bbc"
  },
  "success": true
}
```

{% endtab %}
{% endtabs %}

## Payload

```javascript
{
  "reference_id": "001",
  "data": {
    "image_url": "https://s3.aws.com/600x400/000/fff.jpg&text=Dummy+Image+1",
    "reference_data": {
      "raster": {
        "images": [
          {
            "image_url": "https://s3.aws.com/600x400/000/fff.jpg&text=Dummy+Image+1",
            "label": "camera 1"
          },
          {
            "image_url": "https://s3.aws.com/600x400/000/fff.jpg&text=Dummy+Image+1",
            "label": "camera 2"
          }
        ]
      }
    }
  },
  "work_flow_id": "2aae1234-acac-1234-eeff-12a22a237bbc"
}
```

## Payload Definition

| Key                   | Type     | Description                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| --------------------- | -------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `data.reference_data` | `Object` | <p>The <code>reference\_data</code> object contains an additional list of images that can be used as a reference while annotating the primary image.</p><p>This is an <code>optional</code> key based on your requirement. </p><p></p><p><code>data.reference\_data.raster.images</code> is an array of reference images where each object has 2 keys :</p><p><code>image\_url</code> - URL of the image</p><p><code>label</code>- Name of the image. </p> |
| `data.image_url`      | `string` | URL of the image.                                                                                                                                                                                                                                                                                                                                                                                                                                          |

## Code Example

{% tabs %}
{% tab title="Python" %}

```python
import requests
import json

"""
Details for creating JOBS,
project_id  ->> ID of project in which the job will be created
x_api_key   ->> API key for authentication 
workflow_id ->> The workflow in which the job will be created
batch_id    ->> The batch in which job will be created
"""

# Additional helper function to create a batch
def create_batch(BATCH_NAME):
    base_url = f"https://api.playment.io/v1/projects/{PROJECT_ID}/batch"
    DATA = {"name":BATCH_NAME}
    response = requests.post(base_url, headers={'x-api-key': CLIENT_KEY}, json=DATA)
    response_data = response.json()
    if response.status_code >= 500:
        raise Exception(f"Something went wrong at Playment's end {response.status_code}")
    if 400 <= response.status_code < 500:
        raise Exception(f"{response_data['error']['message']} {response.status_code}")
    print(response_data)
    return response_data
    
#method that can be used to call the job creation api
def create_job(project_id, data, x_api_key):
    base_url = "https://api.playment.io/v1/projects/{}/jobs".format(project_id)
    headers = {'x-api-key': x_api_key}
    response = requests.post(base_url, headers=headers, json=data)
    
    print(response.json())
    if response.status_code >= 500:
        raise Exception(response.text)
    if 400 <= response.status_code < 500:
        raise Exception(response.text)
    return response.json()

if __name__ == "__main__":
    #list of frames in a single job
    image_url = "https://example.com/image_url_1"
    ref_image_url1 = "https://example.com/ref_image_url_1"
    ref_image_url2 = "https://example.com/ref_image_url_2"
    
    #reference_id should be unique for each job
    reference_id= "job1"

    project_id = ''
    x_api_key = ''
    workflow_id = ''
    batch_id = ''
    
    
    job_data = {
        'reference_id':reference_id,
        'work_flow_id':workflow_id,
        'data':{
            'image_url':image_url,
            'reference_data': {
                  'raster': {
                    'images': [
                      {
                        'image_url': ref_image_url1,
                        'label': 'camera 1'
                      },
                      {
                        'image_url': ref_image_url2,
                        'label': 'camera 2'
                      }
                    ]
                  }
                }
            },
        'batch_id': batch_id
    }
    
    response = create_job(project_id=project_id, data=job_data, x_api_key= x_api_key)
    print(response)
    
```

{% endtab %}
{% endtabs %}

## Creating jobs with pre-labeled data

If you have data which has been labeled previously by an ML model or by human labelers, you can create jobs with such labels already created. To do this, you need to send the annotation data in the `data.maker_response` key in the payload. The annotation data needs to be in our annotation format.

Here's an example:

```javascript
{  
   "reference_id":"001",
   "data":{
     "image_url":"https://s3.aws.com/600x400/000/fff.jpg&text=Dummy+Image+1",
     "maker_response" : {
        "raster": {
           "data": {
              "legend": {
                "#fdffd34": "Person 1",
                "#f23334": "Car 1",
                "#fd2d34": "Sky" 
              },
              "url": "https://example.s3.ap-south-1.amazonaws.com/mask001.png"
           }
        }
      }
   },
   "work_flow_id":"2aae1234-acac-1234-eeff-12a22a237bbc"
}
```

The object at the end of`data.maker_response.raster.data.url` should be a PNG file with four 8-bit channels. The first 3 channels are R, G & B respectively. The hex code for these RGB values for any pixel should map to a class or instance based on the`legend` object. Un-labeled pixels should have each channel as 0.