feat: Add cancel_job() method to JobManager #1228

Is there an existing issue for this?

I have searched the existing issues and found none.

Problem Statement

In src/codegraphcontext/core/jobs.py, the JobStatus enum has a CANCELLED status defined but there is no cancel_job() method in the JobManager class to actually use it. This means once a job is started it cannot be cancelled programmatically.

Proposed Solution

Add a cancel_job() method to JobManager that sets the job status to JobStatus.CANCELLED and sets the end_time. This is thread-safe using the existing self.lock pattern.

Example:

def cancel_job(self, job_id: str) -> bool:
with self.lock:
if job_id in self.jobs:
job = self.jobs[job_id]
if job.status in [JobStatus.PENDING, JobStatus.RUNNING]:
job.status = JobStatus.CANCELLED
job.end_time = datetime.now()
return True
return False

Benefits

Allows users to cancel long-running indexing jobs
Makes use of the existing CANCELLED status that is currently unused
Consistent with the existing thread-safe pattern in JobManager

Record

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