def acquire_reserve_task_lock(project_id,
task_id,
user_id,
timeout,
pipeline=None,
execute=True):
task = task_repo.get_task(task_id)
project = project_repo.get(project_id)
if not (task and project and project.info.get("sched", "default")
in [Schedulers.task_queue]):
return False
reserve_task_config = project.info.get("reserve_tasks",
{}).get("category", [])
category_exist = reserve_task_config and all(
task.info.get(field, False) for field in reserve_task_config)
if not category_exist:
return False
category = [
"{}:{}".format(field, task.info.get(field))
for field in reserve_task_config
]
category = ":".join(category)
redis_conn = sentinel.master
pipeline = pipeline or redis_conn.pipeline(transaction=True)
lock_manager = LockManager(redis_conn, timeout)
if lock_manager.acquire_reserve_task_lock(project_id, task_id, user_id,
category):
current_app.logger.info(
"Acquired reserve task lock. project %s, task %s, user %s, category %s",
project_id, task_id, user_id, category)
return True
return False
def get_reserve_task_category_info(reserve_task_config,
project_id,
timeout,
user_id,
exclude_user=False):
"""Get reserved category info for a given user under a given project"""
sql_filters, category_keys = "", []
if not reserve_task_config:
return sql_filters, category_keys
category = ":".join(
["{}:*".format(field) for field in sorted(reserve_task_config)])
lock_manager = LockManager(sentinel.master, timeout)
category_keys = lock_manager.get_task_category_lock(
project_id, user_id, category, exclude_user)
current_app.logger.info(
"Project %s, user %s, reserve config %s, exclude %s. reserve task category keys %s",
project_id, user_id, json.dumps(reserve_task_config), exclude_user,
str(category_keys))
if not category_keys:
return sql_filters, category_keys
sql_filters, category_keys = reserve_task_sql_filters(
project_id, category_keys, exclude_user)
return sql_filters, category_keys
def release_lock(task_id, user_id, timeout, pipeline=None, execute=True):
redis_conn = sentinel.master
pipeline = pipeline or redis_conn.pipeline(transaction=True)
lock_manager = LockManager(redis_conn, timeout)
task_users_key = get_task_users_key(task_id)
user_tasks_key = get_user_tasks_key(user_id)
lock_manager.release_lock(task_users_key, user_id, pipeline=pipeline)
lock_manager.release_lock(user_tasks_key, task_id, pipeline=pipeline)
if execute:
pipeline.execute()
def acquire_lock(task_id, user_id, limit, timeout, pipeline=None, execute=True):
redis_conn = sentinel.master
pipeline = pipeline or redis_conn.pipeline(transaction=True)
lock_manager = LockManager(redis_conn, timeout)
task_users_key = get_task_users_key(task_id)
user_tasks_key = get_user_tasks_key(user_id)
if lock_manager.acquire_lock(task_users_key, user_id, limit, pipeline=pipeline):
lock_manager.acquire_lock(user_tasks_key, task_id, float('inf'), pipeline=pipeline)
if execute:
return all(not isinstance(r, Exception) for r in pipeline.execute())
return True
return False
def release_lock(task_id, user_id, timeout, pipeline=None, execute=True):
redis_conn = sentinel.master
pipeline = pipeline or redis_conn.pipeline(transaction=True)
lock_manager = LockManager(redis_conn, timeout)
task_users_key = get_task_users_key(task_id)
user_tasks_key = get_user_tasks_key(user_id)
lock_manager.release_lock(task_users_key, user_id, pipeline=pipeline)
lock_manager.release_lock(user_tasks_key, task_id, pipeline=pipeline)
project_ids = get_task_ids_project_id([task_id])
if project_ids:
unregister_active_user(project_ids[0], user_id, sentinel.master)
if execute:
pipeline.execute()
def release_reserve_task_lock_by_keys(resource_ids,
timeout,
pipeline=None,
expiry=EXPIRE_RESERVE_TASK_LOCK_DELAY):
if not resource_ids:
return
redis_conn = sentinel.master
pipeline = redis_conn.pipeline(transaction=True)
lock_manager = LockManager(redis_conn, timeout)
for resource_id in resource_ids:
lock_manager.release_reserve_task_lock(resource_id, pipeline, expiry)
current_app.logger.info(
"Release reserve task lock. resource id %s, expiry %d",
resource_id, expiry)
def get_locked_tasks_project(project_id):
"""Returns a list of locked tasks for a given project."""
tasks = []
redis_conn = sentinel.master
# Get the active users key for this project.
key = get_active_user_key(project_id)
# Get the users for each locked task.
for user_key in redis_conn.hgetall(key).iteritems():
user_id = user_key[0]
# Get locks by user.
user_tasks = get_user_tasks(user_id, TIMEOUT)
# Get task ids for the locks.
user_task_ids = user_tasks.keys()
# Get project ids for the task ids.
results = get_task_ids_project_id(user_task_ids)
# For each locked task, check if the lock is still active.
for task_id, task_project_id in zip(user_task_ids, results):
# Match the requested project id.
if int(task_project_id) == project_id:
# Calculate seconds remaining.
seconds_remaining = LockManager.seconds_remaining(user_tasks[task_id])
if seconds_remaining > 0:
# This lock has not yet expired.
tasks.append({
"user_id": user_id,
"task_id": task_id,
"seconds_remaining": seconds_remaining
})
return tasks
def release_reserve_task_lock_by_id(project_id,
task_id,
user_id,
timeout,
expiry=EXPIRE_RESERVE_TASK_LOCK_DELAY):
reserve_key = get_reserve_task_key(task_id)
if not reserve_key:
return
redis_conn = sentinel.master
pipeline = redis_conn.pipeline(transaction=True)
lock_manager = LockManager(redis_conn, timeout)
resource_id = "reserve_task:project:{}:category:{}:user:{}:task:{}".format(
project_id, reserve_key, user_id, task_id)
lock_manager.release_reserve_task_lock(resource_id, pipeline, expiry)
current_app.logger.info(
"Release reserve task lock. project %s, task %s, user %s, expiry %d",
project_id, task_id, user_id, expiry)
def get_task_id_and_duration_for_project_user(project_id, user_id):
user_tasks = get_user_tasks(user_id, TIMEOUT)
user_task_ids = user_tasks.keys()
results = get_task_ids_project_id(user_task_ids)
max_seconds_task_id = -1
max_seconds_remaining = float('-inf')
for task_id, task_project_id in zip(user_task_ids, results):
if not task_project_id:
task_project_id = task_repo.get_task(task_id).project_id
save_task_id_project_id(task_id, task_project_id, 2 * TIMEOUT)
if int(task_project_id) == project_id:
seconds_remaining = LockManager.seconds_remaining(
user_tasks[task_id])
if seconds_remaining > max_seconds_remaining:
max_seconds_task_id = int(task_id)
max_seconds_remaining = seconds_remaining
if max_seconds_task_id > 0:
return max_seconds_task_id, max_seconds_remaining
return None, -1
def get_user_tasks(user_id, timeout):
lock_manager = LockManager(sentinel.master, timeout)
user_tasks_key = get_user_tasks_key(user_id)
return lock_manager.get_locks(user_tasks_key)
def get_locks(task_id, timeout):
lock_manager = LockManager(sentinel.master, timeout)
task_users_key = get_task_users_key(task_id)
return lock_manager.get_locks(task_users_key)
def has_lock(task_id, user_id, timeout):
lock_manager = LockManager(sentinel.master, timeout)
task_users_key = get_task_users_key(task_id)
return lock_manager.has_lock(task_users_key, user_id)
def release_lock(project_id, task_id, user_id, timeout):
lock_manager = LockManager(sentinel.master, timeout)
key = get_key(project_id, task_id)
lock_manager.release_lock(key, user_id)
def acquire_lock(project_id, task_id, user_id, limit, timeout):
lock_manager = LockManager(sentinel.master, timeout)
key = get_key(project_id, task_id)
return lock_manager.acquire_lock(key, user_id, limit)
def has_lock(project_id, task_id, user_id, timeout):
lock_manager = LockManager(sentinel.master, timeout)
key = get_key(project_id, task_id)
return lock_manager.has_lock(key, user_id)
