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			271 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			271 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
"""Taiga integration for Zulip.
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Tips for notification output:
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*Text formatting*: if there has been a change of a property, the new
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value should always be in bold; otherwise the subject of US/task
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should be in bold.
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"""
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from typing import Any, Dict, List, Mapping, Optional, Tuple
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from django.http import HttpRequest, HttpResponse
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from zerver.decorator import api_key_only_webhook_view
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from zerver.lib.request import REQ, has_request_variables
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from zerver.lib.response import json_success
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from zerver.lib.webhooks.common import check_send_webhook_message
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from zerver.models import UserProfile
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@api_key_only_webhook_view('Taiga')
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@has_request_variables
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def api_taiga_webhook(request: HttpRequest, user_profile: UserProfile,
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                      message: Dict[str, Any]=REQ(argument_type='body')) -> HttpResponse:
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    parsed_events = parse_message(message)
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    content_lines = []
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    for event in parsed_events:
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        content_lines.append(generate_content(event) + '\n')
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    content = "".join(sorted(content_lines))
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    topic = 'General'
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    check_send_webhook_message(request, user_profile, topic, content)
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    return json_success()
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templates = {
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    'epic': {
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        'create': u'%(user)s created epic **%(subject)s**',
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        'set_assigned_to': u'%(user)s assigned epic **%(subject)s** to %(new)s.',
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        'unset_assigned_to': u'%(user)s unassigned epic **%(subject)s**',
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        'changed_assigned_to': u'%(user)s reassigned epic **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'blocked': u'%(user)s blocked epic **%(subject)s**',
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        'unblocked': u'%(user)s unblocked epic **%(subject)s**',
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        'changed_status': u'%(user)s changed status of epic **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'renamed': u'%(user)s renamed epic from **%(old)s** to **%(new)s**',
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        'description_diff': u'%(user)s updated description of epic **%(subject)s**',
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        'commented': u'%(user)s commented on epic **%(subject)s**',
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        'delete': u'%(user)s deleted epic **%(subject)s**',
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    },
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    'relateduserstory': {
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        'create': (u'%(user)s added a related user story '
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                   u'**%(userstory_subject)s** to the epic **%(epic_subject)s**'),
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        'delete': (u'%(user)s removed a related user story ' +
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                   u'**%(userstory_subject)s** from the epic **%(epic_subject)s**'),
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    },
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    'userstory': {
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        'create': u'%(user)s created user story **%(subject)s**.',
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        'set_assigned_to': u'%(user)s assigned user story **%(subject)s** to %(new)s.',
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        'unset_assigned_to': u'%(user)s unassigned user story **%(subject)s**.',
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        'changed_assigned_to': u'%(user)s reassigned user story **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'points': u'%(user)s changed estimation of user story **%(subject)s**.',
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        'blocked': u'%(user)s blocked user story **%(subject)s**.',
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        'unblocked': u'%(user)s unblocked user story **%(subject)s**.',
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        'set_milestone': u'%(user)s added user story **%(subject)s** to sprint %(new)s.',
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        'unset_milestone': u'%(user)s removed user story **%(subject)s** from sprint %(old)s.',
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        'changed_milestone': u'%(user)s changed sprint of user story **%(subject)s** from %(old)s'
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        ' to %(new)s.',
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        'changed_status': u'%(user)s changed status of user story **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'closed': u'%(user)s closed user story **%(subject)s**.',
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        'reopened': u'%(user)s reopened user story **%(subject)s**.',
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        'renamed': u'%(user)s renamed user story from %(old)s to **%(new)s**.',
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        'description_diff': u'%(user)s updated description of user story **%(subject)s**.',
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        'commented': u'%(user)s commented on user story **%(subject)s**.',
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        'delete': u'%(user)s deleted user story **%(subject)s**.'
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    },
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    'milestone': {
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        'create': u'%(user)s created sprint **%(subject)s**.',
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        'renamed': u'%(user)s renamed sprint from %(old)s to **%(new)s**.',
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        'estimated_start': u'%(user)s changed estimated start of sprint **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'estimated_finish': u'%(user)s changed estimated finish of sprint **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'delete': u'%(user)s deleted sprint **%(subject)s**.'
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    },
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    'task': {
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        'create': u'%(user)s created task **%(subject)s**.',
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        'set_assigned_to': u'%(user)s assigned task **%(subject)s** to %(new)s.',
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        'unset_assigned_to': u'%(user)s unassigned task **%(subject)s**.',
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        'changed_assigned_to': u'%(user)s reassigned task **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'blocked': u'%(user)s blocked task **%(subject)s**.',
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        'unblocked': u'%(user)s unblocked task **%(subject)s**.',
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        'set_milestone': u'%(user)s added task **%(subject)s** to sprint %(new)s.',
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        'changed_milestone': u'%(user)s changed sprint of task '
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                             '**%(subject)s** from %(old)s to %(new)s.',
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        'changed_status': u'%(user)s changed status of task **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'renamed': u'%(user)s renamed task %(old)s to **%(new)s**.',
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        'description_diff': u'%(user)s updated description of task **%(subject)s**.',
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        'commented': u'%(user)s commented on task **%(subject)s**.',
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        'delete': u'%(user)s deleted task **%(subject)s**.',
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        'changed_us': u'%(user)s moved task **%(subject)s** from user story %(old)s to %(new)s.'
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    },
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    'issue': {
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        'create': u'%(user)s created issue **%(subject)s**.',
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        'set_assigned_to': u'%(user)s assigned issue **%(subject)s** to %(new)s.',
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        'unset_assigned_to': u'%(user)s unassigned issue **%(subject)s**.',
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        'changed_assigned_to': u'%(user)s reassigned issue **%(subject)s**'
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        ' from %(old)s to %(new)s.',
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        'changed_priority': u'%(user)s changed priority of issue '
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                            '**%(subject)s** from %(old)s to %(new)s.',
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        'changed_severity': u'%(user)s changed severity of issue '
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                            '**%(subject)s** from %(old)s to %(new)s.',
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        'changed_status': u'%(user)s changed status of issue **%(subject)s**'
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                           ' from %(old)s to %(new)s.',
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        'changed_type': u'%(user)s changed type of issue **%(subject)s** from %(old)s to %(new)s.',
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        'renamed': u'%(user)s renamed issue %(old)s to **%(new)s**.',
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        'description_diff': u'%(user)s updated description of issue **%(subject)s**.',
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        'commented': u'%(user)s commented on issue **%(subject)s**.',
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        'delete': u'%(user)s deleted issue **%(subject)s**.'
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    },
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}
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return_type = Tuple[Optional[Dict[str, Any]], Optional[Dict[str, Any]]]
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def get_old_and_new_values(change_type: str,
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                           message: Mapping[str, Any]) -> return_type:
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    """ Parses the payload and finds previous and current value of change_type."""
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    if change_type in ['subject', 'name', 'estimated_finish', 'estimated_start']:
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        old = message["change"]["diff"][change_type]["from"]
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        new = message["change"]["diff"][change_type]["to"]
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        return old, new
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    old = message["change"]["diff"][change_type].get("from")
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    new = message["change"]["diff"][change_type].get("to")
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    return old, new
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def parse_comment(message: Mapping[str, Any]) -> Dict[str, Any]:
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    """ Parses the comment to issue, task or US. """
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    return {
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        'event': 'commented',
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        'type': message["type"],
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        'values': {
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            'user': get_owner_name(message),
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            'subject': get_subject(message)
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        }
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    }
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def parse_create_or_delete(message: Mapping[str, Any]) -> Dict[str, Any]:
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    """ Parses create or delete event. """
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    if message["type"] == 'relateduserstory':
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        return {
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            'type': message["type"],
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            'event': message["action"],
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            'values': {
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                'user': get_owner_name(message),
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                'epic_subject': message['data']['epic']['subject'],
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                'userstory_subject': message['data']['user_story']['subject'],
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            }
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        }
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    return {
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        'type': message["type"],
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        'event': message["action"],
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        'values': {
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            'user': get_owner_name(message),
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            'subject': get_subject(message)
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        }
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    }
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def parse_change_event(change_type: str, message: Mapping[str, Any]) -> Optional[Dict[str, Any]]:
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    """ Parses change event. """
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    evt = {}  # type: Dict[str, Any]
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    values = {
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        'user': get_owner_name(message),
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        'subject': get_subject(message)
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    }  # type: Dict[str, Any]
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    if change_type in ["description_diff", "points"]:
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        event_type = change_type
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    elif change_type in ["milestone", "assigned_to"]:
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        old, new = get_old_and_new_values(change_type, message)
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        if not old:
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            event_type = "set_" + change_type
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            values["new"] = new
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        elif not new:
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            event_type = "unset_" + change_type
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            values["old"] = old
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        else:
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            event_type = "changed_" + change_type
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            values.update({'old': old, 'new': new})
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    elif change_type == "is_blocked":
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        if message["change"]["diff"]["is_blocked"]["to"]:
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            event_type = "blocked"
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        else:
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            event_type = "unblocked"
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    elif change_type == "is_closed":
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        if message["change"]["diff"]["is_closed"]["to"]:
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            event_type = "closed"
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        else:
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            event_type = "reopened"
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    elif change_type == "user_story":
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        old, new = get_old_and_new_values(change_type, message)
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        event_type = "changed_us"
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        values.update({'old': old, 'new': new})
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    elif change_type in ["subject", 'name']:
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        event_type = 'renamed'
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        old, new = get_old_and_new_values(change_type, message)
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        values.update({'old': old, 'new': new})
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    elif change_type in ["estimated_finish", "estimated_start"]:
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        old, new = get_old_and_new_values(change_type, message)
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        if not old == new:
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            event_type = change_type
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            values.update({'old': old, 'new': new})
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        else:
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            # date hasn't changed
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            return None
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    elif change_type in ["priority", "severity", "type", "status"]:
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        event_type = 'changed_' + change_type
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        old, new = get_old_and_new_values(change_type, message)
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        values.update({'old': old, 'new': new})
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    else:
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        # we are not supporting this type of event
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        return None
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    evt.update({"type": message["type"], "event": event_type, "values": values})
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    return evt
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def parse_message(message: Mapping[str, Any]) -> List[Dict[str, Any]]:
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    """ Parses the payload by delegating to specialized functions. """
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    events = []
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    if message["action"] in ['create', 'delete']:
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        events.append(parse_create_or_delete(message))
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    elif message["action"] == 'change':
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        if message["change"]["diff"]:
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            for value in message["change"]["diff"]:
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                parsed_event = parse_change_event(value, message)
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                if parsed_event:
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                    events.append(parsed_event)
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        if message["change"]["comment"]:
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            events.append(parse_comment(message))
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    return events
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def generate_content(data: Mapping[str, Any]) -> str:
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    """ Gets the template string and formats it with parsed data. """
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    return templates[data['type']][data['event']] % data['values']
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def get_owner_name(message: Mapping[str, Any]) -> str:
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    return message["by"]["full_name"]
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def get_subject(message: Mapping[str, Any]) -> str:
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    data = message["data"]
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    return data.get("subject", data.get("name"))
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