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models.py
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models.py
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# coding=utf-8
import os
import socket
from sqlalchemy import Column, String, Integer, Text, BigInteger, DateTime, SmallInteger
from sqlalchemy import distinct, func, or_
from sqlalchemy.ext.declarative import declarative_base
Base = declarative_base()
from sqlalchemy.orm.exc import NoResultFound
from datetime import datetime, timedelta
from utils.db import provide_session,engine
from utils import log,process_utils
from state import State
import config
import utils.redis_utils as kafka_utils
class JobCommand(object):
def __init__(self, cmd, job):
self.cmd = cmd
self.job = job
# Create user model.
class User(Base):
"""
用户表
"""
__tablename__ = "user"
id = Column(Integer, primary_key=True)
first_name = Column(String(100))
last_name = Column(String(100))
login = Column(String(80), unique=True)
email = Column(String(120))
password = Column(String(200))
# Flask-Login integration
# NOTE: is_authenticated, is_active, and is_anonymous
# are methods in Flask-Login < 0.3.0
@property
def is_authenticated(self):
return True
@property
def is_active(self):
return True
@property
def is_anonymous(self):
return False
def get_id(self):
return self.id
# Required for administrative interface
def __unicode__(self):
return self.username
class Task(object):
def __init__(self, task_id=None, name=None, task_type=None, sub_count=0, module=None, command=None, raw=None):
self.task_id = task_id
self.name = name
self.task_type = task_type
self.sub_count = sub_count
self.module = module
self.command = command
self.raw = raw
def __repr__(self):
return "Task {self.task_id} {self.name} {self.task_type} {self.sub_count}".format(**locals())
class TtaskInstanceLog(Base):
"""
任务执行日志表
"""
__tablename__ = "ttask_instance_log"
extend_existing=True
id = Column(BigInteger, primary_key=True)
log_id = Column(BigInteger)
stdout = Column(Text)
in_time = Column(DateTime)
class TaskDefine(Base):
"""
任务配置表
"""
__tablename__ = "task_define"
id = Column(BigInteger, primary_key=True)
task_id = Column(String(250))
task_name = Column(String(256))
command = Column(Text)
enable = Column(String(20))
keeper = Column(String(250))
run_type = Column(String(20))
@provide_session
def get_valid_job(self, session=None,cron_type='day'):
jobs_list = session.query(TaskDefine).filter(TaskDefine.enable == State.Enabled
,TaskDefine.run_type==cron_type).all()
return jobs_list
def job_command(self, execute_date):
cmd = "{} {}".format(self.command, execute_date)
if False:
cmd = "{} {}".format('python /home/etl/bi_code/cflow/mock_script/mock_1.py', execute_date)
return cmd
@provide_session
def get_job_by_task_id(self, task_id_list, session=None):
"""
get_job_by_task_id
:param task_id_list:
:param session:
:return: TaskDefine
"""
status = [1, 2]
job_list = session.query(TaskDefine)\
.filter(TaskDefine.task_id.in_(task_id_list))\
.filter(TaskDefine.enable == State.Enabled).all()
return job_list
class CronConf(Base):
"""
crontab配置表
"""
__tablename__ = "cron_conf"
id = Column(BigInteger, primary_key=True)
task_id = Column(String(250))
name = Column(String(512))
enable = Column(String(20))
module = Column(SmallInteger)
type = Column(String(250))
cron_type = Column(String(250))
command = Column(Text)
start_time = Column(String(32))
redo_param = Column(String(500))
modify_time = Column(DateTime)
@provide_session
def get_cron_by_task_id(self, task_id, session=None):
"""
get_cron_by_task_id
:param task_id:
:param session:
:return: CronConf
"""
cron = session.query(CronConf).filter(CronConf.task_id == task_id).one()
return cron
@provide_session
def getCronTask(self, task_id=None, fetch_time=None, session=None):
"""
根据任务ID查询
:param task_id: 任务ID
:param fetch_time:
:param session:
:return: CronConfig
"""
query = session.query(CronConf)
if task_id is not None:
query = query.filter(CronConf.task_id == task_id)
if fetch_time is not None:
query = query.filter(
func.cast(CronConf.modify_time, DateTime)
>= func.cast(fetch_time, DateTime))
return query.all()
def cron_command(self, param=None):
"""
gen a cron command
:return:
"""
cmd = self.command
if param is not None:
cmd = "{} {}".format(self.command, param)
return cmd
class TaskInstance(Base):
"""
调度器触发的任务实例表
"""
__tablename__ = "task_instance"
id = Column(BigInteger, primary_key=True)
etl_day = Column(String(32))
task_id = Column(String(250))
sub_task_id = Column(String(250))
name = Column(String(512))
task_type = Column(String(32))
module = Column(String(32), default="bi")
status = Column(String(32))
scheduler_time = Column(DateTime)
begin_time = Column(DateTime)
end_time = Column(DateTime)
heartbeat = Column(DateTime)
command = Column(String(512))
hostname = Column(String(512))
worker_retry = Column(Integer)
scheduler_retry = Column(Integer)
def __repr__(self):
return "[ task_id: {}, sub_task_id: {}, etl_day: {}, instance_id: {}, statue {}, command {}]".format(
self.task_id, self.sub_task_id, self.etl_day, self.id, self.status, self.command)
@provide_session
def get_instance_result(self, etl_day, task_type, session=None):
"""
get_instance_result
:param etl_day: YYYY-MM-DD
:param session:
:return: finish_count, success_count
"""
param_values={}
sql = "select t1.* from task_instance t1 where id = " \
"(select max(id) from task_instance where task_id=t1.task_id " \
"and etl_day = t1.etl_day and task_type = t1.task_type) "
if task_type == State.TASK_EXTRACT:
sql = sql.replace("task_id=t1.task_id", "sub_task_id=t1.sub_task_id")
sql += " and etl_day = :etl_day"
param_values['etl_day'] = etl_day
sql += " and task_type = :task_type "
param_values['task_type'] = task_type
finish_count = 0
success_count = 0
task_instance = session.execute(sql, param_values).fetchall()
for instance in task_instance:
if instance.task_id == State.FAKE_JOB:
continue
if instance.status in State.FINISHED_STATUS:
finish_count += 1
if instance.status == State.SUCCESS:
success_count += 1
return finish_count, success_count
@provide_session
def create_fake_task_instance(self, execute_date, session=None):
"""
create_fake_task_instance to compat old system
:param execute_date:
:param session:
:return:
"""
exist = session.query(
session.query(TaskInstance.id)
.filter(TaskInstance.etl_day == execute_date,
TaskInstance.task_id == State.FAKE_JOB)
.exists()
).scalar()
now = datetime.now()
if not exist:
instance = TaskInstance(
etl_day=execute_date,
task_id=State.FAKE_JOB,
sub_task_id="0",
name=State.FAKE_JOB,
task_type=State.TASK_JOB,
module="bi",
status=State.SUCCESS,
scheduler_time=now,
begin_time=now,
end_time=now,
heartbeat=now,
hostname=socket.gethostname(),
worker_retry=0,
scheduler_retry=0,
)
session.add(instance)
session.commit()
@provide_session
def create_extract_task_instance(self, execute_date, rule_list, session=None):
"""
create_extract_task_instance for etl.extract_rule
:param execute_date: YYYY-MM-DD
:param rule_list: extract rule list
:param session:
:return: task instance list
"""
scheduelr_time = datetime.now()
task_ids = []
instance_list = []
for rule in rule_list:
instance = TaskInstance(
etl_day=execute_date,
task_id=rule.dest_table,
sub_task_id="{}".format(rule.rule_id),
name="{}.{}".format(rule.src_db, rule.src_table),
task_type=State.TASK_EXTRACT,
module="bi",
status=State.QUEUED,
scheduler_time=scheduelr_time,
scheduler_retry=0,
worker_retry=0
)
task_ids.append(instance.task_id)
instance_list.append(instance)
session.add_all(instance_list)
session.commit()
if len(task_ids) == 0:
return instance_list
# refresh
task_instance = session.query(TaskInstance).filter(TaskInstance.task_id.in_(task_ids)) \
.filter(TaskInstance.etl_day == execute_date) \
.filter(func.cast(TaskInstance.scheduler_time, DateTime) == func.cast(scheduelr_time, DateTime)) \
.all()
return task_instance
@provide_session
def direct_run_single_job_task(self, execute_date, job_list, session=None):
"""
direct_run a job, no dep condition
:param execute_date: YYYY-MM-DD
:param task_id:
:param session:
:return:
"""
scheduelr_time = datetime.now()
task_ids = []
instance_list = []
for job in job_list:
instance = TaskInstance(
etl_day=execute_date,
task_id=job.task_id,
sub_task_id='0',
name=job.task_name,
task_type=State.TASK_JOB,
module="bi",
status=State.QUEUED,
scheduler_time=scheduelr_time,
scheduler_retry=0,
worker_retry=0,
)
task_ids.append(instance.task_id)
instance_list.append(instance)
session.add_all(instance_list)
session.commit()
# refresh task_instance
task_instance = session.query(TaskInstance).filter(TaskInstance.task_id.in_(task_ids))\
.filter(func.cast(TaskInstance.scheduler_time, DateTime) == func.cast(scheduelr_time, DateTime)) \
.filter(TaskInstance.etl_day == execute_date, TaskInstance.status == State.QUEUED).all()
return task_instance
@provide_session
def create_job_task_instance(self, execute_date, job_list, session=None):
"""
create_normal_task_instance for etl.schedule_job_define
:param execute_date: YYYY-MM-DD
:param task_id: task id
:param session:
"""
scheduelr_time = datetime.now()
task_ids = []
instance_list = []
for job in job_list:
instance = TaskInstance(
etl_day=execute_date,
task_id=job.task_id,
sub_task_id='0',
name=job.task_name,
task_type=State.TASK_JOB,
module="bi",
status=State.WAITINGDEP,
scheduler_time=scheduelr_time,
scheduler_retry=0,
worker_retry=0,
)
task_ids.append(instance.task_id)
instance_list.append(instance)
session.add_all(instance_list)
session.commit()
@provide_session
def job_prepare_running(self, execute_date, task_ids, session=None):
"""
job_prepare_running
:param execute_date: YYYY-MM-DD
:param task_id: task id
:param session:
:return: task instance
"""
# refresh
session.query(TaskInstance).filter(TaskInstance.task_id.in_(task_ids),
TaskInstance.etl_day == execute_date,
TaskInstance.status == State.WAITINGDEP)\
.update({TaskInstance.status: State.QUEUED}, synchronize_session='fetch')
session.commit()
# refresh task_instance
task_instance = session.query(TaskInstance).filter(TaskInstance.task_id.in_(task_ids)) \
.filter(TaskInstance.etl_day == execute_date, TaskInstance.status == State.QUEUED).all()
return task_instance
@provide_session
def create_cron_task_instance(self, execute_date, cron_list, session=None):
"""
create_cron_task_instance for cron_conf(exclude extract task)
:param execute_date: YYYY-MM-DD
:param task_id: task id
:param session:
:return: task instance
"""
scheduelr_time = datetime.now()
task_ids = []
instance_list = []
for cron_conf in cron_list:
instance = TaskInstance(
etl_day=execute_date,
task_id=cron_conf.task_id,
name=cron_conf.name,
task_type=State.TASK_CRON,
module="bi",
status=State.QUEUED,
scheduler_time=scheduelr_time,
scheduler_retry=0,
worker_retry=0,
)
task_ids.append(instance.task_id)
instance_list.append(instance)
session.add_all(instance_list)
session.commit()
# refresh
task_instance = session.query(TaskInstance).filter(TaskInstance.task_id.in_(task_ids)) \
.filter(TaskInstance.etl_day == execute_date) \
.filter(func.cast(TaskInstance.scheduler_time, DateTime) == func.cast(scheduelr_time, DateTime)) \
.all()
return task_instance
@provide_session
def heartbeat_instance(self, session=None):
"""
heartbeat for task instance
:param session:
:return: affect rows, new instance
"""
instance = None
cnt = session.query(TaskInstance).filter(TaskInstance.id == self.id,
TaskInstance.status == State.RUNNING)\
.update({TaskInstance.heartbeat: datetime.now()})
session.commit()
if cnt == 0:
instance = session.query(TaskInstance).filter(TaskInstance.id == self.id).one()
return cnt, instance
@provide_session
def update_status(self, status, session=None):
"""
update_status
:param status: task status
:param session:
:return:
"""
cur_time = datetime.now()
update_value = {}
update_value[TaskInstance.status] = status
update_value[TaskInstance.heartbeat] = cur_time
if status == State.SUCCESS or status == State.FAILED:
update_value[TaskInstance.end_time] = cur_time
session.query(TaskInstance).filter(TaskInstance.id == self.id).update(update_value)
session.commit()
@provide_session
def is_job_finished(self, etl_day, task_list, session=None):
"""
is_job_finished
:param etl_day: YYYY-MM-DD
:param task_list: task id list
:param session:
:return: bool, not_finish_list
"""
param_values = {}
sql = "select t1.* from task_instance t1 where id = " \
"(select max(id) from task_instance where task_id=t1.task_id and etl_day = t1.etl_day) "
sql += " and etl_day = :etl_day"
param_values['etl_day'] = etl_day
sql += " and task_id in :ids "
param_values['ids'] = tuple(task_list)
task_instance = session.execute(sql, param_values).fetchall()
instance_result = {x.task_id: x for x in task_instance}
ok_status = [State.SUCCESS, State.SKIPPED]
not_finish_list = []
for task_id in task_list:
if task_id in instance_result and \
instance_result[task_id].status in ok_status:
pass
else:
not_finish_list.append(task_id)
return len(not_finish_list) == 0, not_finish_list
@provide_session
def get_waiting_dep_instance(self, etl_day=None, session=None):
qry = session.query(TaskInstance).filter(TaskInstance.status == State.WAITINGDEP)
if etl_day is not None:
qry = qry.filter(TaskInstance.etl_day == etl_day)
return qry.all()
@provide_session
def refresh_instance(self, instance_id, session=None):
"""
instance id
:param instance_id:
:param session:
:return: err msg ,
"""
instance = None
err = None
now = datetime.now()
for loop in ["loop"]:
_ = loop
update_value = {}
update_value[TaskInstance.hostname] = process_utils.node
filters = []
filters.append(TaskInstance.id == instance_id)
filters.append(TaskInstance.status == State.QUEUED)
filters.append(TaskInstance.heartbeat.is_(None))
filters.append(TaskInstance.begin_time.is_(None))
filters.append(TaskInstance.command.is_(None))
filters.append(TaskInstance.hostname.is_(None))
cnt = session.query(TaskInstance).filter(*filters).update(update_value, synchronize_session='fetch')
session.commit()
if cnt == 0:
err = "instance {} is already run, should not run at this moment".format(instance_id)
break
else:
instance = session.query(TaskInstance).filter(TaskInstance.id == instance_id).one()
if instance.task_type == State.TASK_CRON:
cron_conf = session.query(CronConf).filter(CronConf.task_id == instance.task_id,
CronConf.enable == State.Enabled,
).one()
instance.command = cron_conf.cron_command("{}".format(instance.etl_day))
elif instance.task_type == State.TASK_JOB:
job_define = session.query(TaskDefine).filter(TaskDefine.task_id == instance.task_id
).one()
instance.command = job_define.job_command(instance.etl_day)
"""
elif instance.task_type == State.TASK_EXTRACT:
cron_conf = session.query(CronConf).filter(CronConf.type == State.TASK_EXTRACT,
CronConf.enable == State.Enabled,
CronConf.task_id == State.ROOT_TASK,
).one()
instance.command = cron_conf.cron_command(" -r {} -d {}".format(instance.sub_task_id, instance.etl_day))
"""
else:
err =" not suppport task type {}".format(instance.task_type)
break
if err is not None:
instance = None
return err, instance
@provide_session
def start_running(self, retry=False, session=None):
err = None
now = datetime.now()
update_value = {}
update_value[TaskInstance.heartbeat] = now
update_value[TaskInstance.begin_time] = now
update_value[TaskInstance.command] = self.command
update_value[TaskInstance.hostname] = self.hostname
update_value[TaskInstance.status] = State.RUNNING
update_value[TaskInstance.worker_retry] = self.worker_retry
filters = []
filters.extend([TaskInstance.id == self.id, TaskInstance.etl_day == self.etl_day])
if retry:
filters.append(TaskInstance.status.in_([State.FAILED, State.TIMEOUT]))
else:
filters.append(TaskInstance.status == State.QUEUED)
cnt = session.query(TaskInstance)\
.filter(*filters).update(update_value, synchronize_session='fetch')
session.commit()
#没更新就是已经执行?
if cnt == 0:
err = "is_retry:{}, {}, the instance is running, can not run".format(retry, self)
return err
@provide_session
def stop_running(self, status, session=None):
err = None
now = datetime.now()
update_value = {}
update_value[TaskInstance.end_time] = now
update_value[TaskInstance.status] = status
cnt = session.query(TaskInstance) \
.filter(TaskInstance.id == self.id,
TaskInstance.etl_day == self.etl_day).update(update_value)
session.commit()
update_value={}
update_value[TtaskInstanceLog.stdout]=self.result
update_value[TtaskInstanceLog.in_time]=now
Tnt= session.query(TtaskInstanceLog) \
.filter(TtaskInstanceLog.log_id == self.id).update(update_value)
if Tnt == 0:
tasklog = TtaskInstanceLog(
log_id=self.id,
stdout=self.result,
in_time=now
)
session.add(tasklog)
session.commit()
if cnt == 0:
err = "task {} run at {} whit instancet {}, is running, can not rerun ".format(self.task_id, self.etl_day, self.id)
return err
@provide_session
def create_retry_instance(self, timer_out=-1, max_schedule=0, session=None):
"""
create_retry_instance, when need schedule, crecate a new instance,
:param timer_out: worker execute timeout seconds, -1 means never timeout
:param session:
:return:
"""
task_instance = []
# we don't need retry schedule
if timer_out < 0 or max_schedule <= 0:
return task_instance
# only create worker node heartbeat fialed instance, other issue should handle by worker self
now = datetime.now()
# onle re schedule time limit is 24 hours
max_schedule_at = now - timedelta(hours=24)
# heartbeat time
need_heartbeat_at = now - timedelta(seconds=timer_out)
instance_list = session.query(TaskInstance).filter(TaskInstance.status.in_([State.RUNNING, State.PREPAREED])) \
.filter(func.cast(TaskInstance.heartbeat, DateTime) < func.cast(need_heartbeat_at, DateTime)) \
.filter(func.cast(TaskInstance.scheduler_time, DateTime) > func.cast(max_schedule_at, DateTime)) \
.all()
task_ids = []
for instance in instance_list:
if (instance.scheduler_retry + 1) > max_schedule:
log.logger.info("{} reach the max retry schedule {} times, stop schedule".format(instance, max_schedule))
continue
retry_instance = TaskInstance(
etl_day=instance.etl_day,
task_id=instance.task_id,
sub_task_id=instance.sub_task_id,
name=instance.name,
task_type=instance.task_type,
module=instance.module,
status=State.QUEUED,
scheduler_time=now,
scheduler_retry=instance.scheduler_retry + 1,
worker_retry=instance.worker_retry,
)
session.add(retry_instance)
task_ids.append(retry_instance.task_id)
session.query(TaskInstance).filter(TaskInstance.id == instance.id)\
.update({TaskInstance.status: State.ABANDONNED})
session.commit()
# refresh
if len(task_ids) > 0:
task_instance = session.query(TaskInstance).filter(TaskInstance.task_id.in_(task_ids)) \
.filter(func.cast(TaskInstance.scheduler_time, DateTime) == func.cast(now, DateTime)) \
.all()
return task_instance
@provide_session
def kill_instance(self, task_id, date_list, session=None):
"""
kill_instance
:param task_id: rule_id, or task_id
:param data_list: date list
:return: killed instacne count
"""
# kill_instance
update_value = {}
update_value[TaskInstance.status] = State.KILLED
filters = []
filters.append(TaskInstance.etl_day.in_(date_list))
filters.append(TaskInstance.task_id == task_id)
status_list = [State.WAITINGDEP, State.QUEUED, State.RUNNING, State.FAILED, State.TIMEOUT]
filters.append(TaskInstance.status.in_(status_list))
cnt = session.query(TaskInstance) \
.filter(*filters).update(update_value, synchronize_session='fetch')
session.commit()
return cnt
class TaskDependency(Base):
"""
TaskDependency
"""
__tablename__ = "task_dependency"
id = Column(BigInteger, primary_key=True)
task_id = Column(String(250))
dependency_task_id = Column(String(250))
@provide_session
def is_met_dependency(self, task_id, execute_date, session=None):
"""
is_met_dependency, fetch interval is task met dep, most of time
is call downstream_met_dependency
:param task_id:
:param execute_date: execute_date YYYY-MM-DD
:param session:
:return: met result, detail info
"""
met = False
err = None
for loop in ["loop"]:
_ = loop
up_job_list = self._upstream_list(task_id, session=session)
if len(up_job_list) > 0:
finished, unfinish = TaskInstance().is_job_finished(execute_date, up_job_list, session=session)
if not finished:
if err is not None:
err = "{}, unfinished job task {}".format(err, unfinish)
else:
err = "unfinished job task {}".format(unfinish)
break
met = True
return met, err
@provide_session
def downstream_met_dependency(self, task_id, execute_date, session=None):
"""
downstream_met_dependency called on recv kafka task result
:param task_id:
:param execute_date: execute_date YYYY-MM-DD
:param session:
:return:
"""
met_list = []
down_list = self._downstream_list(task_id, session=session)
for task_id in down_list:
met_dep, msg = self.is_met_dependency(task_id=task_id,
execute_date=execute_date,
session=session)
if met_dep:
met_list.append(task_id)
else:
log.logger.info("{} success, downstream not met:{}".format(task_id, msg))
return met_list
@provide_session
def get_all_upstream(self, task_id, session=None):
"""
get_all_upstream
:param task_id:
:param session:
:return:
"""
result = []
job_list = self._upstream_list(task_id, session=session)
job_list = filter(lambda x: x != State.FAKE_JOB, job_list)
if len(job_list) > 0:
result.extend(job_list)
for job_id in job_list:
tmp_result = self.get_all_upstream(job_id, session=session)
if len(tmp_result) > 0:
result.extend(tmp_result)
return result
@provide_session
def _upstream_list(self, task_id, session=None):
"""
get task_id dependency list
:param task_id: task_id
:param session:
:return: upstream_list job_task_list
"""
qry = session.query(TaskDependency)\
.filter(TaskDependency.task_id == task_id).all()
job_task_list = [dep.dependency_task_id for dep in qry]
return job_task_list
@provide_session
def get_all_downstream(self, task_id, session=None):
"""
get_all_downstream
:param task_id:
:param session:
:return:
"""
result = []
job_list = self._downstream_list(task_id, session=session)
if len(job_list) > 0:
result.extend(job_list)
for job_id in job_list:
tmp_result = self.get_all_downstream(job_id, session=session)
if len(tmp_result) > 0:
result.extend(tmp_result)
return result
@provide_session
def _downstream_list(self, task_id, session=None):
"""
downstream_list get the task list who is depend on task_id
:param task_id: task_id
:param session:
:return: downstream task list
"""
qry = session.query(TaskDependency) \
.filter(TaskDependency.dependency_task_id == task_id).all()
return [dep.task_id for dep in qry]
@provide_session
def refresh(self, dep_list, session=None):
"""
重置所有依赖
:param session:
:return:
"""
pass
@provide_session
def migrateDep(self, job_id=None, delete=False, session=None):
"""
迁移依赖关系
:param session:
:return:
"""
sql = "select * from schedule_job_reference where status=1 "
if job_id is not None:
sql = "{} and job_id={}".format(sql, job_id)
refrence_list = session.execute(sql).fetchall()
ids_list = []
job_to_task_dict = {}
for refrence in refrence_list:
if refrence.job_id not in ids_list:
ids_list.append(refrence.job_id)
job_to_task_dict[refrence.job_id] = "init"
if refrence.reference_job_id not in ids_list:
ids_list.append(refrence.reference_job_id)
job_to_task_dict[refrence.reference_job_id] = "init"
new_job_list = session.query(TaskDefine.job_id, TaskDefine.task_id).filter(TaskDefine.job_id.in_(ids_list)).all()
for job in new_job_list:
if job.job_id in job_to_task_dict:
job_to_task_dict[job.job_id] = job.task_id
dep_list = []
for refrence in refrence_list:
dep = TaskDependency(
task_id=job_to_task_dict[refrence.job_id],
dependency_task_id=job_to_task_dict[refrence.reference_job_id]
)
if dep.task_id == "init" or dep.dependency_task_id == "init":
# this is garbage data, don't migrate
continue
dep_list.append(dep)
if delete:
session.query(TaskDependency).delete()
session.commit()
if len(dep_list) > 0:
session.bulk_save_objects(dep_list)
session.commit()
@provide_session
def fetchDependency(self, task_id=None, session=None):
"""
fetchDependency
:param task_id:
:param session:
:return: task dep list
"""
query = session.query(TaskDependency)
if task_id is not None:
query = query.filter(TaskDependency.task_id == task_id)
qry = query.all()
dep={}
for t in qry:
dep.setdefault(t.task_id, set()).add(t.dependency_task_id)
return dep
@provide_session
def getCircleDep(self, task_id=None, session=None):
"""
is met circle dep
:param task_id:
:param session:
:return: bool, circle_dep_list
"""
circle_dep_path = {}
query = session.query(TaskDependency)
if task_id is not None:
query = query.filter(TaskDependency.task_id == task_id)
qry = query.all()
dep={}
for t in qry:
dep.setdefault(t.task_id, set()).add(t.dependency_task_id)
circled = {}
for t in dep:
dep_c = CircleCheck(t, dep, circled)
if dep_c.is_circle():
circled.setdefault(t, []).extend(dep_c.path)
circle_dep_path[t] = (' -> '.join(dep_c.path))
print ("\n".join([ v for _, v in circle_dep_path.items()]))
class CircleCheck(object):
def __init__(self, id, d, circled):
self.dep_mapping = d
self.start = id
self.path = []
self.circled = circled
def is_circle(self):
return self._check(self.start)
def _check(self, id):
if id in self.circled:
self.path.extend(self.circled[id])
return True
self.path.append(id)
if id not in self.dep_mapping:
return False
for up_id in list(self.dep_mapping[id]):
if up_id == self.start:
self.path.append(self.start)
return True
else:
return self._check(up_id)
self.path.pop()
return False
class CronLog(Base):
"""
crontab 日志表
"""
__tablename__ = "cron_log"
id = Column(BigInteger, primary_key=True)
task_id = Column(String(250))
name = Column(String(512))
module = Column(Integer)
running_type = Column(String(32))
status = Column(String(32))
etl_day = Column(String(32))
begin_time = Column(DateTime)
end_time = Column(DateTime)
command = Column(String(512))
@provide_session
def create_cron_log(self, cron_conf, etl_day, rt=State.NORMAL, session=None):
"""
create_cron_log
:param task: CronConf
:param session:
:return: cron_log
"""
#cron_conf = CronConf().getCronTaskById("fakefadfaf_task2", session)
cron_log = CronLog(
task_id=cron_conf.task_id,
name=cron_conf.name,
module=cron_conf.module,
running_type=rt,
status=State.RUNNING,
etl_day=etl_day,
begin_time=datetime.now(),
)
session.add(cron_log)
session.commit()
return cron_log
@provide_session
def update_cron_status(self, status, session=None):
"""
update_cron_status
:param status: execute status
:return: None
"""
self.status = status
if status == State.SUCCESS or status == State.FAILED:
self.end_time = datetime.now()
session.merge(self)
session.commit()
class LoaderResult(Base):
"""
LoaderResult
"""
__tablename__ = "loader_result"
id = Column(BigInteger, primary_key=True)
hostname = Column(String(512))