def clear_curators(pulsar_id, existdb=None):
"""Clear all curators for a particular pulsar.
Inputs:
pulsar_id: The ID of the pulsar to edit curators for.
existdb: A (optional) existing database connection object.
(Default: Establish a db connection)
Outputs:
None
"""
utils.print_info("Removing all curators for %s" % \
utils.get_pulsarname(psr_id), 2)
# Connect to the database
db = existdb or database.Database()
db.connect()
# Remove curators
delete = db.curators.delete().\
where(db.curators.c.pulsar_id==pulsar_id)
result = db.execute(delete)
result.close()
if not existdb:
db.close()
def check_new_name(pulsar_id, newname):
"""Check if the new name is OK to use for the given
pulsar. The new name is invalid if it is already
in use with a different pulsar_id entry.
An error is raised if the proposed name is invalid.
Inputs:
pulsar_id: The DB ID number of the pulsar to rename.
newname: The proposed new name.
Ouputs:
None
"""
pulsarid_cache = utils.get_pulsarid_cache()
if (newname in pulsarid_cache.keys()) and \
(pulsarid_cache[newname] != pulsar_id):
used_id = pulsarid_cache[newname]
raise errors.BadInputError("The proposed pulsar name, '%s', " \
"is already in use with a different " \
"pulsar (%s, ID: %d). Pulsar names and " \
"aliases must refer to a single " \
"pulsar only." % \
(newname, utils.get_pulsarname(used_id), \
used_id))
def update_curators(pulsar_id, to_add_ids=[], to_rm_ids=[], existdb=None):
"""Update the list of curators for the given pulsar.
Note: if a user is specified to be added and removed,
the removal will take precedence.
Inputs:
pulsar_id: The ID of the pulsar to edit curators for.
to_add_ids: List of user IDs to add as curators.
to_rm_ids: List of user IDs to remove as curators.
existdb: A (optional) existing database connection object.
(Default: Establish a db connection)
Outputs:
None
"""
to_add_ids = set(to_add_ids)
to_rm_ids = set(to_rm_ids)
to_add_ids.difference_update(to_rm_ids) # Remove user_ids that will
# lose curator privileges
if config.cfg.verbosity >= 2:
msg = "Updating curator privileges for %s" % \
utils.get_pulsarname(pulsar_id)
for uid in to_add_ids:
if uid is None:
msg += "\n + Wildcard"
else:
msg += "\n + %s" % utils.get_userinfo(uid)['real_name']
for uid in to_rm_ids:
if uid is None:
msg += "\n - Wildcard"
else:
msg += "\n - %s" % utils.get_userinfo(uid)['real_name']
utils.print_info(msg, 2)
# Connect to the database
db = existdb or database.Database()
db.connect()
trans = db.begin()
try:
# Fetch list of curators
select = db.select([db.curators.c.user_id]).\
where(db.curators.c.pulsar_id==pulsar_id)
result = db.execute(select)
rows = result.fetchall()
result.close()
# Don't re-add existing curators
curators = [row['user_id'] for row in rows]
to_add_ids.difference_update(curators)
# Add curators
ins = db.curators.insert()
values=list()
for add_id in to_add_ids:
values.append({'pulsar_id':pulsar_id, \
'user_id':add_id})
result = db.execute(ins, values)
result.close()
# Only add curators that are present
to_rm_ids.intersection_update(curators)
# Remove curators
delete = db.curators.delete().\
where( (db.curators.c.pulsar_id==pulsar_id) & \
(db.curators.c.user_id.in_(to_rm_ids)) )
result = db.execute(delete)
result.close()
except:
trans.rollback()
raise
else:
trans.commit()
finally:
if not existdb:
db.close()
def verify_replacement(obsolete_id, replacement, db):
"""Verify that the replacement file is a suitable replacement
for the obsolete file. The following conditions must be
satisfied:
- Both observations refer to the same pulsar
(i.e. same pulsar_id)
- Both observations come from the same observing system
(i.e. same obssystem_id)
- The observations overlap
(this is checked by comparing the start/end MJDs)
Inputs:
obsolete_id: The rawfile_id value of the file being replaced.
replacement: The name of the replacement file.
db: An connected database object.
Outputs:
None
"""
# Get info about the replacement file from its header
replaceparams = utils.prep_file(replacement)
# Get info about the obsolete file from database
select = db.select([db.rawfiles.c.pulsar_id, \
db.rawfiles.c.obssystem_id, \
db.rawfiles.c.mjd, \
db.rawfiles.c.length]).\
where(db.rawfiles.c.rawfile_id==obsolete_id)
result = db.execute(select)
rows = result.fetchall()
result.close()
if len(rows) > 1:
raise errors.InconsistentDatabaseError("Multiple matches (%s) " \
"for rawfile_id (%d)! This should not happen..." % \
(len(rows), obsolete_id))
elif len(rows) < 1:
raise errors.BadInputError("The rawfile_id provided (%d) does not " \
"exist!" % obsolete_id)
else:
obsoleteparams = rows[0]
# Now check that the obsolete file and its replacement are compatible
# Check the replacement is from the same obssystem
if obsoleteparams['obssystem_id'] != replaceparams['obssystem_id']:
raise errors.FileError("The observing system of the replacement " \
"(ID: %d) doesn't match the observing system of " \
"the file it's replacing (ID: %d)." % \
(obsoleteparams['obssystem_id'], \
replaceparams['obssystem_id']))
# Check the replacement is data on the same pulsar
if obsoleteparams['pulsar_id'] != replaceparams['pulsar_id']:
raise errors.FileError("The pulsar name in the replacement file " \
"(%s) doesn't match the pulsar name in the file it's "
"replacing (%s)." % \
(utils.get_pulsarname(obsoleteparams['pulsar_id']), \
utils.get_pulsarname(replaceparams['pulsar_id'])))
# Check the replacement overlaps with the obsolete file
omjdstart = obsoleteparams['mjd']
omjdend = omjdstart + obsoleteparams['length']/86400.0
rmjdstart = replaceparams['mjd']
rmjdend = rmjdstart + replaceparams['length']/86400.0
if (omjdstart >= rmjdend or omjdend <= rmjdstart):
raise errors.FileError("The replacement file (MJD: %f - %f) " \
"doesn't overlap with the file it is replacing " \
"(MJD: %f - %f)." % \
(rmjdstart, rmjdend, omjdstart, omjdend))