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import json
import copy
import subprocess
from collections import Counter
from fatcat_openapi_client import ApiClient, Editgroup
from fatcat_openapi_client.rest import ApiException
from fatcat_tools.transforms import entity_from_dict, entity_to_dict
class EntityCleaner:
"""
API for individual jobs:
# record iterators sees
push_record(record)
finish()
# provided helpers
self.api
self.get_editgroup_id()
counts({'lines', 'skip', 'merged', 'updated'})
# implemented per-task
try_merge(idents, primary=None) -> int (entities updated)
This class is pretty similar to EntityImporter, but isn't subclassed.
"""
def __init__(self, api, entity_type, **kwargs):
eg_extra = kwargs.get('editgroup_extra', dict())
eg_extra['git_rev'] = eg_extra.get('git_rev',
subprocess.check_output(["git", "describe", "--always"]).strip()).decode('utf-8')
eg_extra['agent'] = eg_extra.get('agent', 'fatcat_tools.EntityCleaner')
self.api = api
self.entity_type = entity_type
self.dry_run_mode = kwargs.get('dry_run_mode', True)
self.edit_batch_size = kwargs.get('edit_batch_size', 50)
self.editgroup_description = kwargs.get('editgroup_description', "Generic Entity Cleaner Bot")
self.editgroup_extra = eg_extra
self.reset()
self.ac = ApiClient()
if self.dry_run_mode:
print("Running in dry-run mode!")
def reset(self):
self.counts = Counter({'lines': 0, 'cleaned': 0, 'updated': 0})
self._edit_count = 0
self._editgroup_id = None
self._entity_queue = []
self._idents_inflight = []
def push_record(self, record):
"""
Intended to be called by "pusher" class (which could be pulling from
JSON file, Kafka, whatever).
Input is expected to be an entity in JSON-like dict form.
Returns nothing.
"""
self.counts['lines'] += 1
if (not record):
self.counts['skip-null'] += 1
return
entity = entity_from_dict(record, self.entity_type, api_client=self.ac)
if entity.state != 'active':
self.counts['skip-inactive'] += 1
return
cleaned = self.clean_entity(copy.deepcopy(entity))
if entity == cleaned:
self.counts['skip-clean'] += 1
return
else:
self.counts['cleaned'] += 1
if self.dry_run_mode:
entity_dict = entity_to_dict(entity, api_client=self.ac)
print(json.dumps(entity_dict))
return
if entity.ident in self._idents_inflight:
raise ValueError("Entity already part of in-process update: {}".format(entity.ident))
updated = self.try_update(cleaned)
if updated:
self.counts['updated'] += updated
self._edit_count += updated
self._idents_inflight.append(entity.ident)
if self._edit_count >= self.edit_batch_size:
self.api.accept_editgroup(self._editgroup_id)
self._editgroup_id = None
self._edit_count = 0
self._idents_inflight = []
return
def clean_entity(self, entity):
"""
Mutates entity in-place and returns it
"""
# implementations should fill this in
raise NotImplementedError
def try_update(self, entity):
"""
Returns edit count (number of entities updated).
If >= 1, does not need to update self.counts. If no entities updated,
do need to update counts internally.
"""
# implementations should fill this in
raise NotImplementedError
def finish(self):
if self._edit_count > 0:
self.api.accept_editgroup(self._editgroup_id)
self._editgroup_id = None
self._edit_count = 0
self._idents_inflight = []
return self.counts
def get_editgroup_id(self):
if not self._editgroup_id:
eg = self.api.create_editgroup(
Editgroup(
description=self.editgroup_description,
extra=self.editgroup_extra))
self._editgroup_id = eg.editgroup_id
return self._editgroup_id
|
