Uncaught Exception in Operation Editor in dev.deepforge.org

[umesh-timalsina]

Navigating from My Utilities to Operation Editor and changing its color or adding attributes throws the following error in dev.deepforge.org. The code becomes unreachable and any operation cannot be executed even after refresh. This behaviour also happens if there's any clipboard content pasted to the operation/ utilities code editor.

[umesh-timalsina]

To be specific, in the server, the following error is thrown (if you refresh and try to execute the operation as is).

e:plugin:GenerateJob] Retrieving inputs and deserialize fns...
(node:1333) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'getInputs' of undefined
    at GenerateJob.OperationOps.getInputs (/deepforge/src/common/plugin/Operation.js:32:36)
    at GenerateJob.createInputs (/deepforge/src/plugins/GenerateJob/GenerateJob.js:270:38)
    at GenerateJob.createOperationFiles (/deepforge/src/plugins/GenerateJob/GenerateJob.js:199:20)
    at processTicksAndRejections (internal/process/task_queues.js:97:5)
    at async GenerateJob.main (/deepforge/src/plugins/GenerateJob/GenerateJob.js:96:23)

[brollb]

From the stack trace, it appears that no operation is found in the operation's code. Can you share the value of code here?

[umesh-timalsina]

The value of the code there is as follows:

import math

import numpy as np

from matplotlib import pyplot as plt
from astropy.visualization import make_lupton_rgb

from utils.data_utils import DataSetSampler


class VisualizeRandomGalaxies():
    def __init__(self, num_galaxies=10):
        self.num_galaxies = num_galaxies


    def execute(self):
        # Execute your operation here!
        sampler = DataSetSampler()
        num_galaxies = self.num_galaxies
        cols = 2
        rows = math.ceil(self.num_galaxies / cols)
        
        sample_indices = np.random.choice(sampler.tgt_indices, 
                                          size=num_galaxies,
                                          replace=False)
        
        img_arr = sampler.cube[sample_indices]
        labels_arr = sampler.labels[sample_indices]
        
        assert img_arr.shape = (num_galaxies, 64, 64, 5)
        
        for j in range(num_galaxies):
            print(f'Galaxy: {labels_arr[j]["imageID"]},'
                  f'Redshift: labels_arr[j]["z"]')
                  
        fig, axes = plt.subplots(rows, cols)
        count = 0

[brollb]

It is failing because there is a syntax error here:

assert img_arr.shape = (num_galaxies, 64, 64, 5)

That said, it would be better for this to fail gracefully.

[brollb]

For example, a couple things that could be useful:

• requiring the user to fix this issues before execution
• integrate the code editor with a python language server or something similar