def validate_uris(app_name, uris):
key = 'uris'
msg = ("pyspark app misconfigured:"
" %s, if supplied, must be a list of hadoop-compatible filepaths"
) % key
if not all(isinstance(x, six.string_types) for x in uris):
log_and_raise(msg, extra=dict(app_name=app_name))
def validate_uris(app_name, uris):
key = 'uris'
msg = ("pyspark app misconfigured:"
" %s, if supplied, must be a list of hadoop-compatible filepaths"
) % key
if not all(isinstance(x, six.string_types) for x in uris):
log_and_raise(msg, extra=dict(app_name=app_name))
def get_bash_cmd(app_name):
"""Lookup the bash command-line options for a bash task
If they don't exist, return empty string"""
dg = api.get_tasks_config()
meta = dg[app_name]
job_type = meta.get('job_type', 'bash')
try:
assert job_type == 'bash'
except AssertionError:
log.error("App is not a bash job",
extra=dict(app_name=app_name, job_type=job_type))
rv = meta.get('bash_cmd', '')
if not isinstance(rv, six.string_types):
log_and_raise(
"App config for bash plugin is misconfigured:"
" bash_cmd is not a string", dict(app_name=app_name))
return rv
def get_bash_cmd(app_name):
"""Lookup the bash command-line options for a bash task
If they don't exist, return empty string"""
dg = api.get_tasks_config()
meta = dg[app_name]
job_type = meta.get('job_type', 'bash')
try:
assert job_type == 'bash'
except AssertionError:
log.error(
"App is not a bash job", extra=dict(
app_name=app_name, job_type=job_type))
rv = meta.get('bash_cmd', '')
if not isinstance(rv, six.string_types):
log_and_raise(
"App config for bash plugin is misconfigured:"
" bash_cmd is not a string", dict(app_name=app_name))
return rv
def main(ns):
"""
A generic plugin that schedules arbitrary bash jobs using Stolos
Assume code is written in Python. For Scala or R code, use another option.
"""
job_id = ns.job_id
ld = dict(app_name=ns.app_name, job_id=ns.job_id)
log.info('Running bash job', extra=ld)
cmd = get_bash_cmd(ns.app_name)
if ns.bash_cmd:
cmd += ' '.join(ns.bash_cmd)
log.debug("Appending user-supplied bash options to defaults",
extra=dict(app_name=ns.app_name, job_id=job_id, cmd=cmd))
ld.update(cmd=cmd)
if not cmd:
raise UserWarning(
"You need to specify bash options or configure default bash"
" options")
_cmdargs = dict(**ns.__dict__)
_cmdargs.update(api.parse_job_id(ns.app_name, job_id))
cmd = cmd.format(**_cmdargs)
if ns.redirect_to_stderr:
_std = sys.stderr
else:
_std = PIPE
log.info('running command', extra=ld)
returncode, stdout, stderr = run(cmd,
shell=True,
timeout=ns.watch,
stdout=_std,
stderr=_std)
ld = dict(bash_returncode=returncode, stdout=stdout, stderr=stderr, **ld)
if returncode == -9:
log_and_raise("Bash job timed out", ld)
elif returncode != 0:
# this raises an error and logs output:
log_and_raise("Bash job failed", ld)
else:
log.info("Bash job succeeded", extra=ld)
def main(ns):
"""
A generic plugin that schedules arbitrary bash jobs using Stolos
Assume code is written in Python. For Scala or R code, use another option.
"""
job_id = ns.job_id
ld = dict(app_name=ns.app_name, job_id=ns.job_id)
log.info('Running bash job', extra=ld)
cmd = get_bash_cmd(ns.app_name)
if ns.bash_cmd:
cmd += ' '.join(ns.bash_cmd)
log.debug(
"Appending user-supplied bash options to defaults", extra=dict(
app_name=ns.app_name, job_id=job_id, cmd=cmd))
ld.update(cmd=cmd)
if not cmd:
raise UserWarning(
"You need to specify bash options or configure default bash"
" options")
_cmdargs = dict(**ns.__dict__)
_cmdargs.update(api.parse_job_id(ns.app_name, job_id))
cmd = cmd.format(**_cmdargs)
if ns.redirect_to_stderr:
_std = sys.stderr
else:
_std = PIPE
log.info('running command', extra=ld)
returncode, stdout, stderr = run(
cmd, shell=True, timeout=ns.watch, stdout=_std, stderr=_std)
ld = dict(bash_returncode=returncode, stdout=stdout, stderr=stderr, **ld)
if returncode == -9:
log_and_raise("Bash job timed out", ld)
elif returncode != 0:
# this raises an error and logs output:
log_and_raise("Bash job failed", ld)
else:
log.info("Bash job succeeded", extra=ld)
def validate_env(app_name, env):
if not hasattr(env, 'items'):
log_and_raise(("pyspark app misconfigured:"
" env, if supplied, must be a key: value mapping"),
dict(app_name=app_name))
for k, v in env.items():
if not isinstance(k, six.string_types):
log_and_raise(("pyspark app misconfigured:"
"invalid key. expected string"),
dict(app_name=app_name, key=k))
if not isinstance(v, six.string_types):
log_and_raise(("pyspark app misconfigured:"
"invalid value. expected string"),
dict(app_name=app_name, value=v))
def validate_env(app_name, env):
if not hasattr(env, 'items'):
log_and_raise(
("pyspark app misconfigured:"
" env, if supplied, must be a key: value mapping"),
dict(app_name=app_name))
for k, v in env.items():
if not isinstance(k, six.string_types):
log_and_raise(
("pyspark app misconfigured:"
"invalid key. expected string"),
dict(app_name=app_name, key=k))
if not isinstance(v, six.string_types):
log_and_raise(
("pyspark app misconfigured:"
"invalid value. expected string"),
dict(app_name=app_name, value=v))
def apply_data_transform(ns, sc, log_details, pjob_id, module):
"""Pass control to the module.main method. If module.main specifies a
`textFile` parameter, pass the textFile instance. Otherwise, just map
module.main on the RDD
"""
func_args = inspect.getargspec(module.main).args
if 'sc' in func_args:
log.info(
'passing spark context to a module.main function',
extra=log_details)
try:
module.main(sc=sc, ns=ns, **pjob_id)
except Exception as err:
log_and_raise(
"Job failed with error: %s" % err, log_details)
else:
read_fp = format_fp(ns.read_fp, ns, pjob_id)
log_details = dict(read_fp=read_fp, **log_details)
tf = sc.textFile(read_fp, ns.minPartitions)
tf = pre_process_data(ns=ns, tf=tf, log_details=log_details)
if 'textFile' in func_args:
log.info(
'passing textFile instance to a module.main function',
extra=log_details)
try:
module.main(textFile=tf, ns=ns, **pjob_id)
except Exception as err:
log_and_raise(
"Job failed with error: %s" % err, log_details)
else:
write_fp = format_fp(ns.write_fp, ns, pjob_id)
log.info(
'mapping a module.main function to all elements in a textFile'
' and writing output',
extra=dict(write_fp=write_fp, **log_details))
try:
(
tf
.map(functools.partial(module.main, ns=ns, **pjob_id))
.saveAsTextFile(write_fp)
)
except Exception as err:
log_and_raise(err, log_details)
def validate_spark_conf(app_name, conf):
# spark_conf - Is it a dict of str: str pairs?
if not isinstance(conf, (dict, TasksConfigBaseMapping)):
log_and_raise(("pyspark app improperly configured:"
" spark_conf must be a key:value mapping."),
dict(app_name=app_name))
for k, v in conf.items():
if not isinstance(k, six.string_types):
log_and_raise(
"pyspark app improperly configured:"
" Key in spark_conf must be a string",
dict(app_name=app_name, key=k, key_type=type(k)))
if not isinstance(v, six.string_types + six.integer_types +
(bool, float)):
log_and_raise(("pyspark app improperly configured:"
"Value for given key in spark_conf must be an"
" int, string or bool"),
dict(key=k, value_type=type(v), app_name=app_name))
def validate_spark_conf(app_name, conf):
# spark_conf - Is it a dict of str: str pairs?
if not isinstance(conf, (dict, TasksConfigBaseMapping)):
log_and_raise(
("pyspark app improperly configured:"
" spark_conf must be a key:value mapping."),
dict(app_name=app_name))
for k, v in conf.items():
if not isinstance(k, six.string_types):
log_and_raise(
"pyspark app improperly configured:"
" Key in spark_conf must be a string",
dict(app_name=app_name, key=k, key_type=type(k)))
if not isinstance(v, six.string_types + six.integer_types +
(bool, float)):
log_and_raise(
("pyspark app improperly configured:"
"Value for given key in spark_conf must be an"
" int, string or bool"),
dict(key=k, value_type=type(v), app_name=app_name))
