open-nomad/ui/app/components/job-page/parts/title.js

import Component from '@ember/component';
import { task } from 'ember-concurrency';
import messageFromAdapterError from 'nomad-ui/utils/message-from-adapter-error';
import { tagName } from '@ember-decorators/component';
import classic from 'ember-classic-decorator';

@classic
@tagName('')
export default class Title extends Component {
  job = null;
  title = null;

  handleError() {}

  @task(function*() {
    try {
      const job = this.job;
      yield job.stop();
      // Eagerly update the job status to avoid flickering
      this.job.set('status', 'dead');
    } catch (err) {
      this.handleError({
        title: 'Could Not Stop Job',
        description: messageFromAdapterError(err, 'stop jobs'),
      });
    }
  })
  stopJob;

  @task(function*() {
    const job = this.job;
    const definition = yield job.fetchRawDefinition();

    delete definition.Stop;
    job.set('_newDefinition', JSON.stringify(definition));

    try {
      yield job.parse();
      yield job.update();
      // Eagerly update the job status to avoid flickering
      job.set('status', 'running');
    } catch (err) {
      this.handleError({
        title: 'Could Not Start Job',
        description: messageFromAdapterError(err, 'start jobs'),
      });
    }
  })
  startJob;
}