Move ocr job to extra package.

app/services/__init__.py

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+from flask import Blueprint
+
+services = Blueprint('services', __name__)
+
+from . import views

app/services/forms.py

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+from flask_wtf import FlaskForm
+from wtforms import SubmitField
+
+
+class OCRJobForm(FlaskForm):
+    submit = SubmitField('Submit')

app/services/views.py

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+from flask import redirect, render_template, url_for
+from . import services
+from flask_login import current_user, login_required
+from .forms import OCRJobForm
+from ..import swarm
+from threading import Thread
+
+
+@services.route('/ocr', methods=['GET', 'POST'])
+@login_required
+def ocr():
+    ocr_job_form = OCRJobForm()
+    if ocr_job_form.validate_on_submit():
+        '''
+        ' TODO: Implement a Job class. For now a dictionary representation is
+        '       enough.
+        '''
+        job = {'worker': None,
+               'creator': current_user.id,
+               'id': '5fd40cb0cadef3ab5676c4968fc3d748',
+               'requested_cpus': 2,
+               'requested_memory': 2048,
+               'service': 'ocr',
+               'service_args': {'lang': 'eng',
+                                'version': 'latest'
+                                },
+               'status': 'queued'
+               }
+        '''
+        ' TODO: Let the scheduler run this job in the background.
+        '
+        ' NOTE: Using self created threads is just for testing purpose as there
+        '       is no scheduler available.
+        '''
+        thread = Thread(target=swarm.run, args=(job,))
+        thread.start()
+        return redirect(url_for('services.ocr'))
+
+    return render_template(
+        'services/ocr.html.j2',
+        title='Optical Character Recognition',
+        ocr_job_form=ocr_job_form
+    )