def test_delete_partitions_in_groups_of_twenty_five(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
partitions = sorted(self.helper.create_many_partitions(count=30))
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions(partitions)
mock = MagicMock(return_value=[])
partitioner.glue.batch_delete_partition = mock
existing_partitions = partitioner.existing_partitions()
partitioner.delete_partitions(existing_partitions)
first_list = [{"Values": p.values} for p in partitions[:25]]
second_list = [{"Values": p.values} for p in partitions[25:]]
calls = [
call(DatabaseName=self.database,
TableName=self.table,
PartitionsToDelete=first_list),
call(DatabaseName=self.database,
TableName=self.table,
PartitionsToDelete=second_list),
]
mock.call_count.should.equal(2)
mock.assert_has_calls(calls)
def test_create_partitions_error_output(self):
""" Technically this should _never_ happen, but on the off chance that
batch_get_partition ever returns bad values we'll leave it in"""
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
partitions = self.helper.create_many_partitions(count=10)
partitions.sort()
expected_output = f"Running Partitioner for {self.database}.{self.table}\n\tLooking for partitions in s3://{self.bucket}/{self.table}/\n\tFound 10 new partitions to create\n\t"
expected_output += ", ".join(map(str, partitions))
expected_output += f"\nOne or more errors occurred when attempting to create partitions\nError on {partitions[0].values}: AlreadyExistsException"
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions([partitions[0]])
mock = MagicMock(return_value=partitions)
partitioner.partitions_to_create = mock
with captured_output() as (out, err):
create_found_partitions(partitioner)
output = out.getvalue().strip()
output.should.equal(expected_output)
self.exit_mock.assert_called_with(1)
fresh_partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
exists = fresh_partitioner.existing_partitions()
set(exists).should.equal(set(partitions))
def test_update_partitions(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
cli = Cli()
partitions = self.helper.create_many_partitions(10)
partitions.sort()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions(partitions)
expected_output = "Found 5 moved partitions"
partitions_to_move = partitions[0:5]
for p in partitions_to_move:
subpath = "/".join(p.values)
new_location = f"s3://old-bucket/old-table/{subpath}/"
p.location = new_location
expected_output += f"\n\t{p}"
partitioner.update_partition_locations(partitions_to_move)
out, err = self.get_cmd_output(
cli, ["update-partitions", self.database, self.table])
out.should.equal(expected_output)
found_map = PartitionMap(partitioner.existing_partitions())
for partition in partitions_to_move:
matching = found_map.get(partition)
matching.should_not.be.false
matching.location.startswith(
f"s3://{self.bucket}/{self.table}/").should.be.true
def test_delete_missing_partitions(self):
self.helper.make_database_and_table()
cli = Cli()
self.s3.create_bucket(Bucket=self.bucket)
partitions = self.helper.create_many_partitions(count=10)
partitions.sort()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions(partitions)
s3resource = boto3.resource("s3")
bucket = s3resource.Bucket(self.bucket)
for obj in bucket.objects.all():
obj.delete()
expected_out = "Found 10 partitions to delete:"
for partition in partitions:
expected_out += f"\n\t{partition}"
out, err = self.get_cmd_output(
cli, ["delete-missing-partitions", self.database, self.table])
out.should.equal(expected_out)
found_partitions = partitioner.existing_partitions()
found_partitions.should.have.length_of(0)
def test_delete_bad_partitions_dry_run(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
cli = Cli()
partitions = self.helper.create_many_partitions(
count=10, prefix="not-this-table")
partitions.sort()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions(partitions)
expected_out = "Found 10 partitions to delete\nDeleting the following partitions:"
for partition in partitions:
expected_out += f"\n\t{str(partition)}"
out, err = self.get_cmd_output(
cli,
["delete-bad-partitions", self.database, self.table, "--dry-run"])
out.should.equal(expected_out)
found_partitions = partitioner.existing_partitions()
found_partitions.should.have.length_of(10)
def test_find_partitions_in_glue_catalog(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
partition = self.helper.create_partition_data()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions([partition])
existing_partitions = partitioner.existing_partitions()
existing_partitions.should.have.length_of(1)
existing_partitions[0].values.should.equal(partition.values)
existing_partitions[0].location.should.equal(partition.location)
def test_update_partition_storage_descriptors(self):
"""Partitioner.update_storage_descriptors() updates the storage descriptors of all partitions"""
self.helper.make_database_and_table()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions(
self.helper.create_many_partitions(write=False))
# get and update table
columns = [
{
"Name": "foo",
"Type": "string"
},
{
"Name": "bar",
"Type": "string"
},
{
"Name": "only-in-this-test",
"Type": "string"
},
]
table = partitioner.glue.get_table(DatabaseName=self.database,
Name=self.table)["Table"]
for key in [
"DatabaseName", "CreateTime", "CreatedBy",
"IsRegisteredWithLakeFormation", "CatalogId"
]:
if key in table:
del table[key]
table["StorageDescriptor"]["Columns"] = columns
partitioner.glue.update_table(DatabaseName=self.database,
TableInput=table)
errors = partitioner.update_partition_storage_descriptors()
errors.should.have.length_of(0)
for partition in partitioner.existing_partitions():
partition.raw["StorageDescriptor"]["Columns"].should.equal(columns)
def test_delete_missing_partitions_no_partitions(self):
self.helper.make_database_and_table()
cli = Cli()
self.s3.create_bucket(Bucket=self.bucket)
partitions = self.helper.create_many_partitions(count=10)
partitions.sort()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions(partitions)
out, err = self.get_cmd_output(
cli, ["delete-missing-partitions", self.database, self.table])
out.should.equal("Found 0 partitions to delete:")
catalog_partitions = partitioner.existing_partitions()
catalog_partitions.should.have.length_of(10)
def test_create_partitions_dry_run(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
partitions = self.helper.create_many_partitions(count=10)
partitions.sort()
expected_output = f"Running Partitioner for {self.database}.{self.table}\n\tLooking for partitions in s3://{self.bucket}/{self.table}/\n\tFound 10 new partitions to create\n\t"
expected_output += ", ".join(map(str, partitions))
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
with captured_output() as (out, err):
create_found_partitions(partitioner, dry_run=True)
output = out.getvalue().strip()
output.should.equal(expected_output)
found = partitioner.existing_partitions()
found.should.have.length_of(0)
def test_create_partitions_dry_run(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
cli = Cli()
partitions = self.helper.create_many_partitions(count=10)
partitions.sort()
expected_output = f"Running Partitioner for {self.database}.{self.table}\n\tLooking for partitions in s3://{self.bucket}/{self.table}/\n\tFound 10 new partitions to create\n\t"
expected_output += ", ".join(map(str, partitions))
out, err = self.get_cmd_output(
cli, ["create-partitions", self.database, self.table, "--dry-run"])
out.should.equal(expected_output)
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
found = partitioner.existing_partitions()
found.should.have.length_of(0)
def test_delete_all_partitions(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
cli = Cli()
partitions = self.helper.create_many_partitions(count=10)
partitions.sort()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions(partitions)
expected_out = "Deleting the following partitions:"
for partition in partitions:
expected_out += f"\n\t{str(partition)}"
out, err = self.get_cmd_output(
cli, ["delete-all-partitions", self.database, self.table])
out.should.equal(expected_out)
found_partitions = partitioner.existing_partitions()
found_partitions.should.have.length_of(0)
def test_delete_partitions(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
self.helper.create_partition_data()
partition = self.helper.create_partition_data()
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
partitioner.create_partitions([partition])
mock = MagicMock(return_value=[])
partitioner.glue.batch_delete_partition = mock
to_delete = partitioner.existing_partitions()
partitioner.delete_partitions(to_delete)
mock.assert_called_with(DatabaseName=self.database,
TableName=self.table,
PartitionsToDelete=[{
"Values":
to_delete[0].values
}])
def test_create_partitions_limit_days(self):
self.s3.create_bucket(Bucket=self.bucket)
self.helper.make_database_and_table()
cli = Cli()
today = pendulum.now()
partitions = []
for i in range(1, 11):
partition_date = today.subtract(days=i)
year = partition_date.strftime("%Y")
month = partition_date.strftime("%m")
day = partition_date.strftime("%d")
hour = "03"
partition = Partition([
year, month, day, hour
], f"s3://{self.bucket}/{self.table}/{year}/{month}/{day}/{hour}/")
self.helper.write_partition_to_s3(partition)
partitions.append(partition)
partitions.sort()
expected_output = f"Running Partitioner for {self.database}.{self.table}\n\tLooking for partitions in s3://{self.bucket}/{self.table}/\n\tFound 7 new partitions to create\n\t"
expected_output += ", ".join(map(str, partitions[3:]))
out, err = self.get_cmd_output(
cli,
["create-partitions", self.database, self.table, "--limit-days=7"])
out.should.equal(expected_output)
partitioner = Partitioner(self.database,
self.table,
aws_region=self.region)
found = partitioner.existing_partitions()
found.should.have.length_of(7)
set(found).should.equal(set(partitions[3:]))
